矿物掺合料对高性能混凝土性能的影响

The Affect of the Performance of High Performance Concrete by Mineral Admixtures

通过试验研究矿物掺合料对混凝土性能的影响,得知粉煤灰和矿粉能改善混凝土的和易性。与基准混凝土相比,单掺粉煤灰(30%以内)的混凝土28d强度稍有降低,60d强度基本相当;单掺矿粉的混凝土28d强度基本相当,60d强度稍有提高;双掺的混凝土28d强度基本能达到基准混凝土的强度,掺加矿物掺合料后混凝土的抗碳化性能有所降低,抗渗透性能(电通量)得到提高。

Though the experimental study on the influence of mineral admixtures on concrete performance,learned that the coal ash and mineral powder could improve the workability of concrete. Compared with the reference concrete,concrete mixed coal ash less than 30% had a slight decline in the intensity of 28 days,and kept essentially constant in the intensity of 60 days;concrete mixed mineral powder kept essentially constant in the intensity of 28 days,and had a slight increase in the intensity of 60 days;concrete mixed both coal ash and mineral powder could reach the benchmark in the intensity of 28 days,concrete after adding mineral admixtures carbonation resistance decreased but the penetration resistance（electric flux） was improved.