Mitigation of the Factors Affecting the Autogenous Shrinkage of Ultra-High Performance Concrete

Ultra-High Performance Concrete (UHPC) is a new generation of concrete characterized by its high strength, durability, and stiffness. Autogenously shrinkage represents one the issues UHPC that occurred at early ages. It occurs particularly during first 48 hours after casting. This paper focuses on ways can be depended to mitigate autogenously obtain outstanding mechanical properties UHPC. The results showed use coarse sand dose range water reduced admixture above 5% cementations materials weight, ambient temperature time mixing casting led increasing shrinkage. While using fine sand, silica fume 25% cement crushed ice 50% control reduce significantly.