Construction chemicals: paving the way for more efficient, more resilient structures The technological advances made possible by research and development in the construction chemicals sector play a key role in meeting today’s infrastructure challenges. In a constantly changing environment, solutions developed for bridges, tunnels and roads have to meet multiple criteria: increased resistance to climate hazards, reduced carbon footprint, optimized lifespan, improved circularity of resources and ease of maintenance. All of the above are needed to build more resilient and sustainable infrastructure. A modern bridge such as the Delaware Bridge in the United States (see page 49) illustrates this global approach. USING LESS CLINKER Take concrete, for example. The major criticism relates to the environmental impact of the methods used to manufacture it. As a reminder, to make concrete, you need gravel, sand, cement and water. Cement, or more specifically one of its components, clinker, is obtained by mixing crushed limestone and clay heated to a very high temperature. It’s this stage that emits the most CO2 and consumes the most energy, and is ultimately responsible for most of concrete’s carbon footprint. This is why research is focused on using less clinker in concrete. There are several Innovation is also revolutionizing the infrastructure sector. By developing innovative solutions to make materials stronger and more durable, construction chemicals are helping to meet the major challenges facing the sector. SPOTLIGHT 44
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