Tembo cement: a sustainable building material

Tembo cement: a sustainable building material

LafargeHolcim Tanzania manufactures a wide range of high-quality cement products at our Mbeya cement facility. These products are sold under the Tembo cement brand – a market leader in building materials and sustainability. Retailers, contractors and infrastructure specialists will benefit from using any Tembo cement for their construction projects.

Cement is used to make concrete; when mixed with water, sand and crushed stone, cement forms concrete which hardens when it dries. This is a highly durable building material that is kind to the environment. It produces no hazardous byproducts and does not threaten the environment – that is why concrete is such a popular substance for building.

A sustainable approach to construction with Tembo cement products will bring lasting environmental and economic benefits to contractors. LafargeHolcim Tanzania can assure the quality of Tembo cement products as they are specifically engineered using advanced admixtures and abundant raw minerals

Concrete is the natural choice for sustainable building construction. Tembo cement is safe to use and has long-lasting benefits for buildings as it will not rust, rot or burn. Once a building has reached the end of its life, the concrete can be broken down into rubble and recycled for other building projects. This means that concrete can be reused over and over again. 

Each market in the construction sector has its own needs. Tembo cement has a product that is suited to each of these needs and application, from high-strength and quick-setting cement to masonry and general purpose cement. Our products are sustainable and perfectly suited to any civil engineering application.

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LafargeHolcim is a leading building materials and solutions company that has been operating in international markets for decades. We produce cement and aggregates for construction projects, ranging from small affordable housing developments to large-scale infrastructure projects such as high-rise buildings, dams and bridges. 

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LafargeHolcim Tanzania has been supplying the country and neighbouring countries with our world-class Tembo cement brand for over 30 years. Our head office and fully-integrated plant are located in Mbeya, Southwest Tanzania.

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At LafargeHolcim Tanzania, we believe customers come first. We listen to your specific requirements to supply and develop the best solutions for your needs. As the new leader in building materials, you can also rely on our cutting-edge research and development capabilities that have resulted in the finest materials for your construction projects, whether large or small.

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Follow us on Facebook, Twitter, LinkedIn and Pinterest for the best tips on construction, handy projects and the latest industry news. See our Instagram channel for more insights into our products.

LafargeHolcim Group launches ‘Plants for Tomorrow’

LafargeHolcim Group launches Plants for Tomorrow

The global LafargeHolcim Group is on a mission to upgrade all of its cement manufacturing facilities around the world. This drive, called ‘Plants for Tomorrow’, will see over 270 integrated cement plants and grinding mills being upgraded with the latest artificial intelligence and automation technology.

Cement manufacturing facilities, like LafargeHolcim Tanzania’s Tembo cement plant in Mbeya, will get an overhaul of the entire production line. ‘Plants for Tomorrow’ is a four-year initiative that will take LafargeHolcim subsidiaries into the future of cement and building materials.

The upgrades to the cement plants will improve operational efficiency, meaning that these facilities will be able to produce more cement at the end of the initiative. Currently the LafargeHolcim Group is testing the upgrades on 30 pilot projects around the world, where it will iron out any issues before proceeding with a full-scale rollout.

Transforming the cement industry through technology

“Transforming the way we produce cement is one of the focus areas of our digitalisation strategy and the ‘Plants of Tomorrow’ initiative will turn Industry 4.0 into reality at our plants,” says LafargeHolcim global head of cement manufacturing Solomon Baumgartner.

“These innovative solutions make cement production safer, more efficient and environmentally-fit. We are moving to fully data-driven operations in order to support further profitable growth as part of our Strategy 2022 – ‘Building for Growth’,” he explains.

Some of the new technologies to be installed at cement plants

A number of new technologies will be installed at cement manufacturing facilities, such as predictive operations systems that will be able to detect any problems with the production process and implement solutions instantly. This will help to reduce maintenance costs and minimise any downtime of the facilities due to breakdowns. 

The technology will also help to further reduce energy consumption at these facilities. Production lines will become more automated to reduce risks for employees in high-exposure areas of the facilities. 

LafargeHolcim is also planning on using drones to inspect chimney stacks and inaccessible regions of the cement plants. This will allow more frequent inspections to take place while also reducing costs and improving safety standards.

The group is connecting cement plants to a central network

The LafargeHolcim Group is in the process of link all of its global cement manufacturing facilities to a centralised network, dubbed the ‘Technical Information System’. Over 80% of these facilities have already been linked to this system that is able to track performance and allocate resources where necessary.

The Technical Information System also provides specific data at plant, country, region and global levels. This has allowed LafargeHolcim to start building a valuable bank of historical data that can be used to improve efficiency and performance in the future. Since the launch of the Technical Information System in 2006, it has saved LafargeHolcim 184.7-billion TZS in maintenance costs and added around 3-million tonnes of cement through efficient operations.

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LafargeHolcim is a leading building materials and solutions company that has been operating in international markets for decades. We produce cement and aggregates for construction projects, ranging from small affordable housing developments to large-scale infrastructure projects such as high-rise buildings, dams and bridges. 

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LafargeHolcim Tanzania has been supplying the country and neighbouring countries with our world-class Tembo cement brand for over 30 years. Our head office and fully-integrated plant are located in Mbeya, Southwest Tanzania.

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At LafargeHolcim Tanzania, we believe customers come first. We listen to your specific requirements to supply and develop the best solutions for your needs. As the new leader in building materials, you can also rely on our cutting-edge research and development capabilities that have resulted in the finest materials for your construction projects, whether large or small.

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Follow us on Facebook, Twitter, LinkedIn and Pinterest for the best tips on construction, handy projects and the latest industry news. See our Instagram channel for more insights into our products.

How is sustainable construction shaping the cities of the future?

Sustainable cities of the future

African cities are experiencing rapid urbanisation as more people move into these areas. They are fast becoming densely populated and, with it, comes an increase in energy consumption and waste. So, how can our buildings help to keep our cities sustainable in the future?

If we look at the ideal circular economy, the waste we produce is converted into useful products once again, such as energy or reusable goods. Nature is the perfect example of a circular economy – there is no wastage and everything recycles into the circle of life. Architects, engineers and contractors can learn from nature and make our cities more sustainable.

Our cities are likely to be a lot more green in the future. Trees and plants will be planted wherever possible to control air quality and naturally filter carbon emissions out of the atmosphere. Buildings are likely to have their own source of electricity from solar panels and wind turbines. 

Wastewater and sewage will be filtered and processed to create usable water for washing, watering plants and for use in cooling systems. Our buildings will also harness rainwater for drinking. These are some of the ways in which sustainable construction will shape African cities in the future.

Abundance of trees on rooftops

Research has shown that not only do trees have the obvious benefit of removing greenhouse gases from the air, they can also increase the longevity of building rooftops by protecting them from sun damage and severe weather. The lifespan of a flat roof can be doubled by planting trees on top of buildings. 

These trees will improve the air quality in city centres where excessive carbon emissions from vehicles and industry are pumped into the atmosphere. They can help to combat the effects of climate change and protect the buildings beneath them at the same time. Making buildings last longer also results in less construction waste and a more circular economy.

Recycling water in cities

One of the key features of sustainable construction will be the management of water. Tanzania is prone to droughts and saving water will become a priority for citizens. Buildings in the future will have rainwater catchment systems and filters that allow them to store clean drinking water for residents.

In addition, they are likely to have their own wastewater processing plants. This technology is already being used in Africa, whereby used water from baths, sinks, washing machines and toilets is filtered and treated to create ‘clean’ (but not drinkable) water for use in the household. This greywater can be used to wash, mop and water gardens, which saves the clean drinking water for human consumption.

Harnessing renewable energy

Sustainable construction should carry the benefits forward in the lifespan of a building. This means using renewable sources of energy to generate electricity for residents. Africa is a sunny continent, which means that the use of solar panels to create energy is a viable alternative to coal-fired power stations.

Each building in the city of the future is likely to become self-sufficient. They will have a combination of solar and wind power, backed up by large banks of batteries to store the excess energy created. Harnessing renewable sources of energy will minimise our dependence on coal and water to generate electricity, creating sustainable economies in the process.

These are just some of the ways in which sustainable construction will shape the cities of the future. By tackling several environmental issues at once, skyscrapers and apartment blocks will greatly reduce the impact of human activity on the environment. Most of these sustainable systems will also help cities and citizens to save money and lead more environmentally-friendly lifestyles.

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LafargeHolcim is a leading building materials and solutions company that has been operating in international markets for decades. We produce cement and aggregates for construction projects, ranging from small affordable housing developments to large-scale infrastructure projects such as high-rise buildings, dams and bridges. 

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LafargeHolcim Tanzania has been supplying the country and neighbouring countries with our world-class Tembo cement brand for over 30 years. Our head office and fully-integrated plant are located in Mbeya, Southwest Tanzania.

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At LafargeHolcim Tanzania, we believe customers come first. We listen to your specific requirements to supply and develop the best solutions for your needs. As the new leader in building materials, you can also rely on our cutting-edge research and development capabilities that have resulted in the finest materials for your construction projects, whether large or small.

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Follow us on Facebook, Twitter, LinkedIn and Pinterest for the best tips on construction, handy projects and the latest industry news. See our Instagram channel for more insights into our products.

LafargeHolcim Group water reduction

Water saving initiative at LafargeHolcim

Water is an essential resource. Although the building materials industry consumes less water than many other sectors, the global LafargeHolcim Group still strives to save the resource wherever possible. Too many regions across the globe suffer from water shortages and droughts. Increasing urbanisation and population growth are likely to make these problems worse.

That is why LafargeHolcim has started the water withdrawal reduction initiative to create awareness at all of its operations around the world. This initiative is aimed at improving measurement methodologies and reducing the consumption of water at building materials facilities.

Water saving statistics at LafargeHolcim

Since 2016, the LafargeHolcim Group has seen a 19% reduction in freshwater consumption across all its operations. This equates to 73 litres saved for every tonne of cement produced. In 2018, LafargeHolcim started using only 305 litres of water per tonne of cement produced. The group is aiming to get this volume down to 291 litres per tonne by 2022 and then 262 litres per tonne by 2030.

LafargeHolcim assesses water consumption

LafargeHolcim is a global company which means that sustainable water management requires a specific understanding of the context of each locality in which its operations are based. At sites in water-scarce regions, LafargeHolcim conducts assessments that benefit the surrounding communities too. These assessments are based on the World Business Council For Sustainable Development’s Global Water Tool.

LafargeHolcim optimises the use of fresh water at all of its operations, including in Tanzania. The group reduces the risk of water depletion by tracking every cement factory’s intake and output. LafargeHolcim also engages with all stakeholders and encourages those operations in water-scarce areas to share the resource with surrounding communities.

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LafargeHolcim is a leading building materials and solutions company that has been operating in international markets for decades. We produce cement and aggregates for construction projects, ranging from small affordable housing developments to large-scale infrastructure projects such as high-rise buildings, dams and bridges. 

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LafargeHolcim Tanzania has been supplying the country and neighbouring countries with our world-class Tembo cement brand for over 30 years. Our head office and fully-integrated plant are located in Mbeya, Southwest Tanzania.

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At LafargeHolcim Tanzania, we believe customers come first. We listen to your specific requirements to supply and develop the best solutions for your needs. As the new leader in building materials, you can also rely on our cutting-edge research and development capabilities that have resulted in the finest materials for your construction projects, whether large or small.

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Follow us on Facebook, Twitter, LinkedIn and Pinterest for the best tips on construction, handy projects and the latest industry news. See our Instagram channel for more insights into our products.

Sand alternatives for sustainable construction

Sand alternatives for construction

The construction industry relies on many raw materials and minerals for its operations – stone, soil, steel and sand are among the most consumed natural elements in the industry. A growing global population means that more buildings need to be constructed, so some contractors have started to look for sustainable alternatives to these materials.

Sand is a natural material that may seem abundant, but it is being depleted quicker than it is formed by the environment. Leading engineering firms and contractors are exploring sand alternatives for use as aggregates in concrete. These efforts are minimising sand depletion and enabling existing sand to be recycled for other construction projects.

The world uses around 44-billion tonnes of sand every year for construction, land reclamation, roadways and to produce concrete. Not all of it is suitable for construction – desert sand is too fine and beach sand can contain unwanted contaminants such as seashells and plastic pollution. Rivers and quarries are the primary sources of sand used in the building industry.

Sustainable alternatives to sand

Some contractors have started to use plastic waste as an alternative. Non-recyclable bits of plastic waste are ground up into small pellets which are then used as the fine aggregate in a concrete mixture. This process has started to gather momentum in India and the United Kingdom.

While the long-term effects of using plastic in concrete are not fully known, researchers have studied its durability, thermal properties and fire resistance. Plastic is a good alternative to sand and also allows contractors to use up non-recyclable plastic waste in the process.

Contractors are also exploring the use of other sand-like aggregates, including crushed glass and quarry dust. Glass bottles can be recycled but small fractions of broken glass cannot. These bits of broken windows, mirrors, tubes and bottles can be crushed into a sand-like texture. Quarry dust from rock blasting and granite excavation also has similar properties to sand and crushed glass.

Where alternatives to sand cannot be found, contractors have started to recycle sand from old construction projects and sites. Recycling old building materials such as sand, concrete and rubble is starting to gain traction around the world. By embarking on sustainable campaigns, engineers, architects and construction practitioners can minimise their impact on the environment and reduce consumption of natural materials.

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LafargeHolcim is a leading building materials and solutions company that has been operating in international markets for decades. We produce cement and aggregates for construction projects, ranging from small affordable housing developments to large-scale infrastructure projects such as high-rise buildings, dams and bridges.

___

LafargeHolcim Tanzania has been supplying the country and neighbouring countries with our world-class Tembo cement brand for over 30 years. Our head office and fully-integrated plant are located in Mbeya, Southwest Tanzania.

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At LafargeHolcim Tanzania, we believe customers come first. We listen to your specific requirements to supply and develop the best solutions for your needs. As the new leader in building materials, you can also rely on our cutting-edge research and development capabilities that have resulted in the finest materials for your construction projects, whether large or small.

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Follow us on Facebook, Twitter, LinkedIn and Pinterest for the best tips on construction, handy projects and the latest industry news. See our Instagram channel for more insights into our products.

How contractors can promote sustainability on-site

Promoting sustainability on construction sites

Sustainability and ‘going green’ are concepts that are sweeping a number of industries and construction is no exception. Contractors, architects and cement suppliers are constantly looking for ways to promote sustainability and look after the long-term health of the environment through their businesses.

Using sustainable materials in construction is becoming highly important for developers and those who use the buildings. Making use of recycled concrete, repurposed wood and reused materials are some of the ways in which contractors can become more sustainable. By making eco-friendly building choices, contractors can preserve the environment, reduce water usage and save energy.

These choices can also save money in the long run. Green buildings can help to reduce tenants’ monthly living costs as energy and water bills are reduced. Sustainable building materials are also more cost-effective and can reduce building costs. Here are a few other ways for contractors to ‘go green’ and promote sustainability on-site:

Create a sustainability strategy

Contractors need to draw up a sustainability strategy before starting any construction project. Start by looking at the current situation and how it can be improved and made more eco-friendly. Identify the areas that need improvement and what needs to be done in order to make the improvements.

This process will allow you to establish your goals and maintain your sustainability drive at all stages of the construction project. Once you have your green goals, assign tasks to specific people who will be responsible for the implementation of the sustainability strategy. When all employees know what needs to be done and who is accountable, the strategy will be easier to maintain.

Set sustainability standards on-site

Once construction has started, all contractors and employees need to know what needs to be done to achieve the sustainability goals. This is done by implementing standards that contractors will follow. Processes such as recycling, on-site waste reduction, monitoring and evaluations will help achieve the company’s sustainability goals.

Standards such as LED lighting will help to save electricity costs. Although LED bulbs are more expensive to buy, they will save money in the long run. They also last longer than regular light bulbs, which means contractors can use the same lights at multiple construction projects over time.

Waste management and recycling standards are also easy to establish and will promote sustainability on-site. Waste from the building project needs to be sorted and recycled where possible. Encourage employees to recycle their waste at all times and to keep the site clean and litter-free.

Use sustainable materials

Try to use sustainable building materials where possible. Make use of old concrete and rubble from previous projects. Use recycled plastic and refurbished wood. These materials are often cheaper to buy but still last for years in the home.

Install energy-efficient light bulbs in the building. The electrical engineers will know which brands are the best. Energy-efficient lighting will drastically reduce the electricity bill for tenants and will reduce the load on the electricity grid. Make use of solar panels on the roof to add to the power supply for the building.

Install energy efficient heating, ventilation and air conditioning (HVAC) units. These systems often use a lot of power to run, so finding a brand that is energy-efficient can help to promote the sustainability of the building.

Non-toxic paints are also sustainable. They can be better for the health of the tenants as they do not emit highly volatile organic compounds. The painters will know which brands have a lower toxicity level, so ask their advice before the building is painted.

Work with sustainable partners

It is important to team up with sustainable suppliers too. LafargeHolcim Tanzania uses agricultural waste to power its cement furnaces. Align your business with sustainable partners that can help you achieve your eco-friendly goals at every stage of a project.

It is easier to work with partners that are already sustainable than it is to convince suppliers to become eco-friendly. If everyone involved in a project understands the importance of being green, the entire project will be sustainable from the start and its success will be more likely.

These tips will allow any contractor to become more environmentally-friendly. They will help to reduce the impact of a construction project on the environment. Becoming a green business is not only important for the planet but many developers, buyers and investors are looking for sustainable contractors nowadays.

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LafargeHolcim is a leading building materials and solutions company that has been operating in international markets for decades. We produce cement and aggregates for construction projects, ranging from small affordable housing developments to large-scale infrastructure projects such as high-rise buildings, dams and bridges.

___

LafargeHolcim Tanzania has been supplying the country and neighbouring countries with our world-class Tembo cement brand for over 30 years. Our head office and fully-integrated plant are located in the Mbeya Region in Southwest Tanzania.

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At LafargeHolcim Tanzania, we believe customers come first. We listen to your specific requirements to supply and develop the best solutions for your needs. As the new leader in building materials, you can also rely on our cutting-edge research and development capabilities that have resulted in the finest materials for your construction projects, whether large or small.

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Follow us on Facebook, Twitter, LinkedIn and Pinterest for the best tips on construction, handy projects and the latest industry news. See our Instagram channel for more insights into our products.

Benefits of soil-stabilised concrete

Benefits of soil-stabilised concrete

Soil-stabilised concrete is a highly compacted mixture of soil, cement and water. It is a low-cost alternative to regular concrete and is often used as a base for roads, parking areas, pavements and workshop floors. Soil-stabilised concrete has many uses and benefits in countries like Tanzania, due to its affordability and strength characteristics.

The soil used to make this type of concrete can be a combination of sand, silt, clay or crushed stone. The soil acts as the aggregate in the concrete mix. LafargeHolcim Tanzania manufactures Tembo FastaPlus and TemboFundi cement which are both perfect for use in soil-stabilised concrete.  

How to make soil-stabilised concrete

Before using soil-stabilised concrete in a construction project, it is important to make sure that the soil has the right properties. The soil needs to be tested for its water retention and compaction capabilities. These tests ensure that the soil has the right strength and durability for the project.

The soil-stabilised concrete can be mixed in a wheelbarrow, drum or a mechanical cement mixer. The concrete is mixed like normal – with cement and water as the other two main ingredients. It can then be poured on the ground to make the foundations for roads, pavements and floors.

The soil-stabilised concrete is then tightly compacted by rollers and left to cure, like regular concrete. A thin coat of bituminous material is then sprayed on top of the concrete to prevent moisture loss and provide a strong surface. This type of concrete is very dense which makes it strong enough to support the weight of traffic on the road and machinery on a warehouse floor.

Why use soil-stabilised concrete?

Soil-stabilised concrete is an efficient and economical building material. Old pavements and roads can also be reclaimed as reprocessed into soil-stabilised concrete. This is ideal as most of the materials are already in place, which significantly reduces the cost of transport and handling aggregates for the concrete.

Contractors like to use soil-stabilised concrete as it is easy to work with, problem-free and does not require much reworking. The weather also does not have a severe impact on the soil-stabilised concrete, making it ideal for construction during the rainy season.

Soil-stabilised concrete is strong, durable and cost-effective. This makes it ideal for use as a base for roads and pavements that stretch for kilometres, keeping costs down but being a reliable surface for years to come.

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LafargeHolcim is a leading building materials and solutions company that has been operating in international markets for decades. We produce cement and aggregates for construction projects, ranging from small affordable housing developments to large-scale infrastructure projects such as high-rise buildings, dams and bridges.

___

LafargeHolcim Tanzania has been supplying the country and neighbouring countries with our world-class Tembo cement brand for over 30 years. Our head office and fully-integrated plant are located in the Mbeya Region in Southwest Tanzania.

___

At LafargeHolcim Tanzania, we believe customers come first. We listen to your specific requirements to supply and develop the best solutions for your needs. As the new leader in building materials, you can also rely on our cutting-edge research and development capabilities that have resulted in the finest materials for your construction projects, whether large or small.

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Follow us on Facebook, Twitter, LinkedIn and Pinterest for the best tips on construction, handy projects and the latest industry news. See our Instagram channel for more insights into our products.

LafargeHolcim Group working towards a more sustainable future

Rice husks in person's hands for sustainable fuel

The global LafargeHolcim Group has a vision for 2030 that will guide the company towards a more sustainable future. The group will aim to use waste as a source of fuel and to recycle concrete for use as a raw material aggregate in the building process. The LafargeHolcim Group will create value from these waste materials and provide sustainable waste management solutions for the communities in which it operates.

Through its waste management company, Geocycle, LafargeHolcim Tanzania has already started using agricultural waste as a source of fuel for its cement operations in Mbeya. This ensures that no organic waste from surrounding coffee and rice farms ends up in landfills. The practice also creates employment for Tanzanians living in the surrounding communities.

By 2030, LafargeHolcim is aiming to use 80-million tonnes of waste in its operations per year. The group is also striving to multiply its volume of recycled aggregates by four. This means that LafargeHolcim will be using four times as much old concrete and rubble as an aggregate in its construction projects by 2030.

LafargeHolcim cares about a circular economy

As the costs of fuel and material resources rise, competition in the industry is becoming more fierce. In conjunction, a growing population and rapid urbanisation rate are forcing communities and businesses to compete for resources. By using waste as a resource, LafargeHolcim can maximise on opportunities and create value for refuse and industrial by-products.

LafargeHolcim wants to minimise its dependence on natural resources and fossil fuels. There is an abundance of waste, so it makes sense to use it as an alternative resource for the cement production process. This will help to reduce the environmental impact of waste and create employment for community members.

Currently, LafargeHolcim uses 53-million tonnes of waste in its global operations every year. The group also recycles 5.2-million tonnes of concrete and rubble, for use as an aggregate, per annum. Growing these volumes over the coming decade is a priority for the group.

Waste as a resource

LafargeHolcim Tanzania has already started using agricultural waste as an alternative fuel source. Our dependence on fossil fuels has reduced as our subsidiary company, Geocycle, transforms rice and coffee husks into a fuel source. Biomass waste is a great alternative to fossil fuels as the organic compounds are combustible and the source of waste is renewable – the foundations needed to create a circular economy.

The LafargeHolcim Group aims to introduce similar operations to Geocycle at all of its operations around the world. The group will create co-processing installations for waste-derived fuels and raw materials at its cement factories on all continents. This will establish sustainable partnerships with local farmers and communities around the world.

Recycling construction waste

LafargeHolcim will recycle more industrial mineral components and mineral waste from its cement producing operations. Minerals such as blast-furnace slag, fly ash, artificial gypsum and other by-products can be reused in various applications, helping to establish a circular economy.

The group will accelerate its use of recycled aggregates in construction projects by offering a full-service delivery for demolition waste in all urban areas. LafargeHolcim will partner with local businesses in order to develop appropriate business models for every community in which it operates.

LafargeHolcim is working towards a sustainable future with its vision for 2030. While the group is already making progress with its initiatives, there is still much to be done when it comes to waste, recycling and creating a circular economy in the construction industry.

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LafargeHolcim is a leading building materials and solutions company that has been operating in international markets for decades. We produce cement and aggregates for construction projects, ranging from small affordable housing developments to large-scale infrastructure projects such as high-rise buildings, dams and bridges.

___

LafargeHolcim Tanzania has been supplying the country and neighbouring countries with our world-class Tembo cement brand for over 30 years. Our head office and fully-integrated plant are located in the Mbeya Region in Southwest Tanzania.

___

At LafargeHolcim Tanzania, we believe customers come first. We listen to your specific requirements to supply and develop the best solutions for your needs. As the new leader in building materials, you can also rely on our cutting-edge research and development capabilities that have resulted in the finest materials for your construction projects, whether large or small.

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Follow us on Facebook, Twitter, LinkedIn and Pinterest for the best tips on construction, handy projects and the latest industry news. See our Instagram channel for more insights into our products.

What to do with old concrete and rubble

Rubble and old concrete in a pile

Once old buildings and concrete structures come to their end of their useful lives, they are often demolished. The rubble from these structures can be reused or recycled in a variety of ways.

Avoid sending old concrete to the landfill. It can be repurposed and contractors will often use rubble for their construction projects, such as foundations for new roads and pavements. Reusing old rubble can help to minimise costs and is often a better material for construction than aggregates, such as gravel and crushed stone.

Recycled concrete rubble is 10% to 15% lighter than crushed stone aggregates. The lighter weight of the rubble makes the material more efficient for the contractor and it is much easier to haul and handle. It also means that rubble from an old building can be reused on-site where the new building will be constructed, which negates the need for transport.

Uses for old concrete and rubble

Crushed concrete and old rubble has many uses, but those most commonly used by contractors include the following:

  • Aggregate base for road foundations
  • Concrete floor foundations
  • Soil-stabilisation
  • Pipe bedding
  • Landscaping and gardening
  • Ready-mix concrete

The most common use for old concrete and rubble is as an aggregate alternative. Anywhere you would normally use crushed stone or gravel, you could replace these aggregates with concrete rubble. Reusing old rubble is a sustainable construction practice that can provide many benefits in countries such as Tanzania.

Research proves reusing rubble is possible in Tanzania

In a recent academic report titled “Cradle-to-Cradle Production: Concrete Waste Recycling for Sustainable Construction in Tanzania”, authored by Shadrack Sabai, the possibility of recycling old concrete in Tanzania was explored. Sabai published the report from Ardhi University in Dar es Salaam.

“It is possible to recycle [construction and demolition] (C&D) waste into building materials in Tanzania and therefore, the construction industry can achieve the sustainable construction concepts,” writes Sabai. “Recycling C&D waste reduces [carbon dioxide] emissions and leachate to the ecological environment. It prevents health risks which are associated with dumping C&D waste, which include leachate contamination to the water bodies like groundwater,” he explains.

“It is also found that the recycling [costs are far lower], compared to acquiring natural aggregates to produce the building block which satisfies the material standard in Tanzania. It enhances [economic] growth because it reduces costs for building materials,” states Sabai. “Recycled building materials … are cheaper, [more] reliable and affordable to many people in Tanzania,” he continues.

“It is recommended that C&D waste be used in Tanzania for [the] production of the building materials, such as concrete and sandcrete blocks, in order to achieve the sustainable construction in Tanzania,” writes Sabai. The application for recycling old concrete and rubble certainly has a space in the Tanzanian construction industry.

If you have a surplus of rubble that you can’t use for a new project, contact a local waste management provider, contractor or landscaping company to see if they will take your old concrete. These businesses have many uses for rubble and are likely to be able to help you recycle the old concrete.

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LafargeHolcim is a leading building materials and solutions company that has been operating in international markets for decades. We produce cement and aggregates for construction projects, ranging from small affordable housing developments to large-scale infrastructure projects such as high-rise buildings, dams and bridges.

___

LafargeHolcim Tanzania has been supplying the country and neighbouring countries with our world-class Tembo cement brand for over 30 years. Our head office and fully-integrated plant are located in the Mbeya Region in Southwest Tanzania.

___

At LafargeHolcim Tanzania, we believe customers come first. We listen to your specific requirements to supply and develop the best solutions for your needs. As the new leader in building materials, you can also rely on our cutting-edge research and development capabilities that have resulted in the finest materials for your construction projects, whether large or small.

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Follow us on Facebook, Twitter, LinkedIn and Pinterest for the best tips on construction, handy projects and the latest industry news. See our Instagram channel for more insights into our products.

Uendelevu

Geocycle sustainability sign at LafargeHolcim Tanzania

Takwimu zinaonyesha kuwa kufikia mwaka 2050, asilimia 70 ya watu duniani watakuwa wakiishi mijini. Katika kampuni ya LafargeHolcim, tunalenga kuchangia katika uendelevu wa miji duniani kote. Ufumbuzi wetu hutuwezesha kujenga nyumba thabiti zaidi huku tukidumisha ubora na uimara unaosifika katika LafargeHolcim.

Kwa kuwa malengo yetu ya ukuaji wa muda mrefu ujao ni sehemu kuu ya msingi wetu, LafargeHolcim inaendelea kuvumbua na kusanifu bidhaa endelevu zinazolinda mustakabali wa dunia yetu. Kwa kuwa tunafanya kazi katika jamii za vijijini, tunaweza kuendeleza lengo letu la kulinda mazingira.

LafargeHolcim Tanzania inafanya uhamasishaji wa usimamizi wa taka na utunzaji wa maji ili kuyatunza mazingira ya maeneo husika na kuzinufaisha jamii husika. Pia tumeshirikiana na Geocycle Tanzania, kampuni ambayo imetoa huduma za kitaalamu katika sekta ya usimamizi wa taka kwa zaidi ya miaka 30.

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LafargeHolcim kampuni inayoongoza katika utengenezaji bidhaa na utoaji huduma za ujenzi ambayo imefanya kazi katika masoko ya kimataifa kwa miongo kadhaa. Sisi hutengeneza saruji, kusaga mawe na kuandaa zege lililochanganywa tayari kwa ajili ya miradi ya ujenzi, kuifaa miradi midogo ya nyumba za makazi na pia miradi mikubwa ya miundombinu kama vile maghorofa, mabwawa na madaraja.

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LafargeHolcim Tanzania imekuwa ikiitengenezea nchi hii na mataifa jirani bidhaa yetu ya saruji ya Tembo, ambayo ni ya kiwango cha kimataifa, kwa zaidi ya miaka 30. Ofisi yetu ya kuu na kiwanda jumuisha kikamilifu zipo Songwe, Mkoa wa Mbeya, Kusini Magharibi mwa Tanzania.

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Katika kampuni ya LafargeHolcim Tanzania, tunawapa wateja kipaumbele. Tunasikiliza mahitaji yao maalum ili kuwahudumia na kuwatolea bidhaa bora zaidi zinazokidhi mahitaji yako. Unaweza kututegemea sisi kama kiongozi mpya wa utengenezaji nyenzo za ujenzi na uwezo wetu wa utafiti na ustawi ambao umepelekea utengenezaji wa nyenzo bora zaidi za miradi yao ya ujenzi, iwe mikubwa au midogo.

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