The shrinkage characteristics of hsc and normal concrete at short term and long term are researched . based on the above research , high performance expansive c50 - c80 concrete , which posses good expansive properties , excellent flow ability , low slump loss and hydration heat . in order to improve the anti - cracking of some important projects , such as cutting wall , the workability and bulk stability of fiber - reinforced micro expensive concrete are researched 针对高强混凝土的收缩特性以及性能特点，本文提出将膨胀剂引入高强混凝土内进行补偿收缩，研究了粉煤灰、矿渣、硅灰等掺和料对混凝土工作、力学耐久性能的影响和c50 c80高强微膨胀补偿收缩混凝土的力学与工作性能，配制出具有很好的可泵性能和耐久性能的混凝土。
