多种矿物掺合料复合胶凝材料的密实性及性能研究

Study on the density and performance of cementitious materials compounded by multiple mineral admixtures

通过对胶凝材料的优化设计,掺加粒径不同的矿物掺和料,使胶凝材料各组分之间密集堆积,研究多元胶凝材料体系新拌浆体的相对密实度和硬化后混凝土的性能。试验表明:超细粉体之间良好的颗粒填充,降低了胶凝材料的孔隙率,改善了胶凝材料的孔结构,提高了新拌浆体密实性,对硬化后混凝土的强度和透气性有明显的改善。

Through optimization for cementitious materials, adding mineral admixtures of different particle size, the state of each composition in cementitious material is dense packing. This paper studies on the relative denseness of fresh cement compounded with multi-cementitious and the performance of harden concrete. Studies show that the dense packing of the different ultra-fine powders availably debases the porosity and improves the structure of the pore in cementitious materials. Thus, the density of the fresh cement is increased. It is distinctly helpful to the strength and air permeation of harden concrete.