超细粉掺和料对高性能混凝土强度提高的影响

Study on effect of FC admixture on strength improvment of GHPC

通过对不同组分的高性能混凝土的强度试验,研究了超细粉掺合料(以下简称FC料)对高性能混凝土强度的影响;从微观孔结构角度分析了掺入FC料的混凝土强度提高的机理.结果表明,FC料可以大幅度提高混凝土的强度和密实保水性,且在混凝土中使用FC料存在一个最佳掺量问题,不同龄期的最佳掺量不同.

Through the strength test of high performance concrete,in which FC admixture is adopted,the effect of FC admixture on strength of high performance concrete is researched.In the meantime,the effect of many correlative factors,such as density,on strength is researched.The mechanism that strength of high performance concrete improves and is analyzed from the viewpoint of porous microstructure.The following facts are showed through these experiments:when the FC admixture is adopted,the strength and consistence of concrete can be improved considerably,and there is an optimum ratio of FC admixture in GHPC.The optimum ratio of FC admixture is different according to the different time.