Contraction
Summary
Contraction - Change of length caused by shrinkage, temperature variation etc.
Technical Information
The hydration of Portland cement (and to a lesser extent other cementitious materials) generates heat. If the rate of heat generated by cement hydration is greater than the loss of heat from the concrete surfaces, the concrete will expand. Conversely, as the rate reduces with time, there will be net cooling and the concrete will contract.
Related Definitions
Jointless Bay , Large Pour , Long Strip Pour , Thermal Cracking , Sawn Restrained Movement JointsPlease share this definition:
