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本文研究了用不同细度(比表面积)的石灰石粉分别按一定比例取代普通混凝土中的粉煤灰与矿粉,试验结果表明,当石灰石粉细度足够细时,可以改善混凝土的工作性能,提高抗压强度,尤其是早期抗压强度,并根据其它专业人士的研究结果,细度足够细及掺量合适时,混凝土的耐久性能可以满足要求。这对日益匮乏的其它掺合料,如粉煤灰、矿粉有替代作用,能产生明显的经济效益及社会效益。并最大限度地降低了因废弃石灰石粉的产生对环境的污染。
In this paper, limestone powder with different fineness (specific surface area) was used to replace the fly ash and slag respectively by a certain proportion. The results show that when the fineness of limestone powder is fine enough, the working performance of concrete can be improved, Improve the compressive strength, especially the early compressive strength, and according to the results of other professionals, the fineness is fine enough and the dosage is appropriate, the durability of concrete can meet the requirements. This increasingly scarcity of other admixtures, such as fly ash, slag have a substitute effect, can produce significant economic and social benefits. And minimize the environmental pollution caused by the waste limestone powder.