辅助性胶凝材料反应程度与水泥力学性能关系研究

Study on Relationship between Reaction Degree of Supplementary Cementitious Materials and Mechanical Performances of Cement

本文主要研究了矿渣和粉煤灰的比表面积以及掺量对水泥抗压强度的影响,并对矿渣和粉煤灰作为辅助性胶凝材料在水泥浆体中的反应程度与水泥力学性能之间的关系及反应机理进行了探讨,结果表明,随着粉煤灰、矿渣比表面积的增加,水泥的抗压强度增加,但比表面积有一个适合的范围;随着辅助性胶凝材料掺量的增加,水泥强度降低;单掺矿渣或粉煤灰,其反应程度与水泥抗压强度之间呈现良好的对数关系;复合掺加两种或两种以上的辅助性胶凝材料时,采用占主导地位的辅助性胶凝材料的反应程度与水泥抗压强度之间的关系来定性描述两者之间的内在联系,得出两者之间也呈现对数关系。

The influence of slag and fly ash as supplementary cementitious material on mechanical properties of cement was studied; the relationship between mechanical performances of cement and reaction degree of slag and fly ash was investigated, and the reaction mechanism was discussed in this paper. The results showed that the compressive strength of cement decreased with the special surface areas of fly ash reduced, but with the special surface areas of slag increased, the compressive strength of cement firstly increased and then decreased; with the supplementary cementitious material content increased, the compressive strength of cement decreased; When a kind of supplementary cementitious materials in cement was added, the reaction degree of supplementary cementitious materials and the compressive strength of cement has a good logarithmic relationship. When adding two or three kinds of supplementary cementitious materials in cement, the reaction degree of the main supplementary cementitious materials and the compressive strength of cement also presented a logarithmic relationship.