Concrete is one of the most commonly used materials in the world. Its low maintenance and durability make it a good choice for many construction projects. However, the construction industry is a significant contributor to the production of carbon dioxide.
The construction sector accounts for about 5% of global CO2 emissions. Fortunately, the industry has a number of environmentally friendly concrete options available.
One of the most effective eco-friendly concrete alternatives is ‘green’ or’recycled’ concrete. This type of concrete is made using recycled materials and waste. In fact, recycling is not an energy-intensive process and does not result in high CO2 emissions.
Green concrete has a wide range of uses. It can be used for industrial construction and special buildings such as marine structures. Also, it is highly fire resistant and offers a long life-span.
Another alternative is timbercrete, which is a lightweight material that is extremely fire-resistant. It can be used as bricks and can be a good insulation.
In order to manufacture green concrete, a number of research projects have been undertaken. Researchers at the Federal Polytechnic School of Lausanne in Switzerland, for example, have developed a new concrete based on clay and limestone mixture.
ECOPact is an initiative launched by Holcim to accelerate the transition to sustainable construction. The company claims it can reduce nitrogen oxide and mercury emissions. They also believe the technology can save three trillion litres of freshwater.
Novacem in Britain is experimenting with a new type of concrete that is capable of absorbing large amounts of CO2. It will need to obtain licensing to produce this product.