基于灰关联熵法的高性能混凝土强度影响因素分析

Analysis on influencing factor of HPC compressive strength based on gray relation entropy method

对于多种掺合料的高性能混凝土,找出诸多影响性能因素中的关键因素对配合比设计具有现实意义。通过强度试验,运用灰关联熵的系统分析方法,分析了胶水比、水泥强度、水泥掺量、磨细矿渣粉掺量、硅灰及膨胀剂掺量等因素对高性能混凝土28d抗压强度性能影响的主次关系和影响程度。分析表明:对于高性能混凝土,胶水比始终是一个非常重要的参数,同时水泥的强度及其在胶凝材料中的掺量也是混凝土强度的重要保证;外加剂及矿物掺合料对混凝土强度的贡献则取决于外掺料本身的性能。结果证明:在高性能混凝土多因素的分析中,灰关联熵法是一种简单实用且结果比较准确的方法,研究结果可为高性能混凝土配合比设计参数提供有效的计算依据。

It is very rewarding for proportioning of HPC to find out the key influencing factors of HPC＇s performance.Through strength trial, gray relation entropy method is used to analyze the influencing factors such as binder-water ratio, cement strength, quantity of cement and slag powder and silica fume, and swelling agent, etc.And the primary and secondary factors that effect the 28d compressive strength of HPC are also given.The contribution which additives and mineral admixtures make to concrete strength depends on the performance of mineral admixtures.The analysis shows that binder-water ratio is always an important influencing factor of HPC as well as the strength and the quantity of cement are guarantee to concrete strength.The result shows that gray relation entropy is a simple and feasible method but with more accurate results to analyze multiple influencing factors of HPC＇s performance.The result can be a useful computing foundation to provide effective parameters of proportioning of HPC.