机制砂MB值对混凝土性能的影响

The properties of concrete affected by the MB value of the mechanism sand

随着建筑工程技术的进步,机制砂作为混凝土中的细集料得到了广泛运用。目前国内外对机制砂MB值的研究较少。本文通过具体实验研究分析了机制砂对混凝土性能的影响,主要通过机制砂MB值的影响因素,机制砂MB值对混凝土力学性能、长期强度、弹性模量、收缩、抗冻性能的影响等几个方面进行了研究分析,旨在明确机制砂对混凝土有利和不利的MB值的范围,摸索机制砂对混凝土性能影响的规律,对混凝土的研究和工程建设有着理论的支持和实践的指导意义。

With the progress of construction technology, the mechanism of sand widely used as fine aggregate in concrete. The study of the MB value of the mechanism sand were less at home and abroad. In this paper, through concrete experiment study the influence of mechanism sand on concrete performance, several aspects are analyzed, as the influence factors of the MB value of mechanism sand, the influence of the mechanical behavior of concrete, long-term strength, modulus of elasticity, shrinkage, frost resistance performance of concrete affected by the MB value of mechanism sand, with the purpose to find the scope of advantage and disadvantage, the laws of the concrete function affected by the MB value of mechanism sand. It is useful for the research of concrete and the progress of construction.