磨细石粉作为矿物掺合料在混凝土中的应用研究

Study on Application of Ground Limestone Powder as Mineral Admixture in Concrete

研究了磨细石粉作为矿物掺合料对混凝土的影响,适量的石灰石粉可以提高混凝土的工作性能、力学性能,耐久性方面提高了混凝土的抗渗性能、降低了抗氯离子渗透性及抗硫酸盐侵蚀性能、抗碳化性能随着比表面积的增加而增大,且随参量的增加而降低。对目前石粉的研究进行了系统全面的总结,对石粉作为矿物掺合料在混凝土中的应用具有积极的指导意义。

The effects of ground limestone powder on the concrete is studied. A proper amount of limestone powder can improve the workability and mechanical properties. In terms of durability, it improves the permeability of concrete, reduces the ability to resist chloride ion penetration and the resistance to sulfate attack. The carbonization resistance increases with the increase of specific surface area, and decreases with the increasing amount. The study summaries a systematic and comprehensive study for limestone powder, which has a positive guiding significance for the application of limestone powder as a mineral admixture in concrete.