Study On The Volum Stabilization Of High Performan Ceconcrete

The paper presents a systematic study on characteristics and compensation measure of high performance concrete(HPC). Effects of water binder ratio and mineral admixtures on the volume stabilization of HPC were studied. And HPC made from moderate heat Portland cement with expansion has been researched.The result shows that HPC is more sensitive to shrinkage cracking than normal concrete. The smaller the water binder ratio, the more serious the shrinkage. Incorporating with mineral admixtures could control the tendency of evening shrinkage of HPC, but the effect is not much remarkable. And the expansive agent UEA could compensate shrinkage, but different curing conditions have significant effects on the volume stabilization of HPC. It is necessary to enhance the water curing at the young age and try the best to prolong the curing time. And the results suggest that using moderate heat Portland cement and expansive admixture in HPC may compensate its autogenous and dry shrinkage.