Mass / Low Heat
The heat generated by the cement hydration process in larger concrete elements can increase the potential for cracking due to strains caused by different rates of expansion in different sections of the element, especially when the concrete has not gained sufficient strength to resist those forces.
Controlling the rate and the amount of heat generated are important factors in limiting the potential for cracking and damage to the concrete. Firth can supply mixes in which the maximum temperature generated is reduced and the time at which this peak appears is delayed, which allows the concrete to gain strength to help resist the cracking forces.
Firth can provide advice on suitable mix designs and provide real time logging of the temperatures in the concrete element. Pre-pour modelling of expected heat gain can also be done by Firth to assist the design engineers and contractors formulate the best solution for their project.