摘   要：通过强度试验，运用灰关联熵的系统分析方法，分析了水灰比、纤维长径比、纤维掺量、减水剂掺量，坍落度等因素对路面混凝土28d抗弯拉强度和压折比影响的主次关系和影响程度。分析表明，对于水镁石纤维路面混凝土，水灰比是一个非常重要的参数；水镁石纤维的长径比及掺量也是混凝土强度的重要因素。结果证明，在水泥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，其结论可为水镁石混凝土配合比设计参数提供有效的计算依据。

Abstract：Through the compressive strength test, the major and minor relationship and effects of the factors of water-cement ratio, length-diameter ratio of brucite fiber, dosage of fiber, dosage of water reducer and slump on 28d flexural strength and ratio of compressive strength to flexural strength of pavement concrete are analyzed by using systematic analysis method of grey relation entropy. The results indicate that for brucite fiber reinforced pavement concrete, the water-cement ratio is a very important parameter, the length-diameter ratio and the dosage of brucite fiber are also the important factors affecting the strength of concrete. The results prove that in the multifactor analysis for cement concrete, the gray relation entropy method is a kind of simple, practical and resulting accurate method, and the conclusion can provide a valid calculation basis for design parameter of mix proportion of brucite concrete.