杭美艳1,高 萌1,孙成晓1,兰英静2
石灰石粉尘对水泥胶砂性能的影响研究
杭美艳1,高 萌1,孙成晓1,兰英静2
摘 要:将石灰石破碎后产生的粒径小于0.08mm的粉尘颗粒按不同比例等量替代水泥,研究其对水泥胶砂性能的影响。结果表明,石灰石粉尘的掺量小于12%时,既具有减水作用,又不降低胶砂强度;同时,石灰石粉尘的掺入能有效改善水泥胶砂的收缩性能和抗硫酸盐侵蚀性能,说明石灰石粉尘具有一定的活性,不是惰性材料。
Abstract: The dust particles with the size less than 0.08mm which was produced by crushing limestone is used to replace the same amount of cement in different proportions, and the performances of cement mortar are studied. The results show that limestone dust has water-reduce effect and does not reduce the strength of the mortar when the dosage of limestone dust is less than 12%. Meanwhile, the addition of limestone powder can improve the shrinkage property and the sulphate corrosion resistance, which can explain that the limestone dust has a certain activity, is not the inert material.
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