When water and cement are mixed to form concrete, a chemical reaction called hydration sets in. This reaction transforms the individual components into concrete, but it comes with a challenge: heat.
Hydration generates significant heat, especially in large structures like dams, bridges, and high-rises. This heat build-up can cause concrete to expand and crack. This can compromise its strength and safety. The problem intensifies in tropical regions like India, where summer temperatures can soar to 40°C.
This is where chilled concrete comes in as a valuable solution.
Chilled Concrete: Controlling the Heat
Chilled concrete is simply concrete cooled before pouring. This is achieved by adding chilled water or ice to the mix. This lowers its temperature and slows down the hydration process. This controlled, slower hardening reduces peak heat generation. It thus minimizes the risk of cracks and other heat-related defects.
However, pouring ice in every batch manually is a tiresome and time-consuming process. Instead, you could install a Tempcon water chiller for concrete production. This will automate the cooling process, leaving you with perfectly chilled concrete.
Other Benefits of Chilled Concrete
Chilled concrete prevents cracks in structures, but it also offers several other benefits. Those include:
- Enhanced Strength: A slower hydration reaction creates a stronger and more uniform concrete structure. It thus improves the overall concrete strength.
- Improved Surface Finish: Controlled heat of hydration minimizes internal stresses on the concrete. This creates a smoother and aesthetically pleasing surface.
- Enhanced Workability: Cooler concrete is easier to work with. It offers greater plasticity for precise shaping and finishing.
