天然骨料对混凝土力学及变形性能的影响

Effects of natural aggregates on mechanical and deformation properties of concrete

主要讨论天然骨料的级配、最大粒径、表面几何形状和表面状态以及骨料品种对混凝土力学性能的影响,如抗压强度、弹性模量和断裂韧性等的影响,也包含天然骨料里杂质对混凝土性能的不良影响。同时也简要概述天然骨料对混凝土变形性能,如干燥收缩、温度膨胀系数等的影响。

This study mainly discussed the influence of the influence of the grading of natural aggregates, the maximum dimension, the shape and surface texture of natural aggregates, natural aggregate types on mechanical performances of concrete, such as the compressive strength, the elastic modulus, the fracture toughness and so on, including the likely effects of impurities associated with natural aggregates. It also briefly depicted the influence of natural aggregates on deformation properties of concrete, such as the drying shrinkage of concrete, the thermal coefficient of expansion of concrete and so on.