橡胶混凝土物理力学性能研究

摘要

In order to study the change trends of plain concrete performance incorporatedwith rubber particles, the performance of ordinary concrete with different rubberparticles of volume fraction were analyzed. Through the tests of density, the flexural strength, compressive strength, indirect tensile strength, variation law of the basic mechanical propriety and physical characteristics of rubberized concrete were studied. The effect of vibration and noise reduction of the rubber concrete were studied by the acoustic meter. The results indicated that with the rubber particle volume fraction augmentation the density, flexural strength, compressive strength, indirect tensile strength and compressive flexural strength ratio of the rubber concrete decreased and the noise level of the rubberized concrete gradually reduced. However, the reduction extent of flexural strength and indirect tensile strength for the rubber concrete were less than that of the compressive strength. Growth of the mechanical strength by time of the rubber concrete was sIower than that of plain concrete. Generally, the properties of the rubber concrete with rubber particles of 5~8 meshes were slight better than those with rubber particles of 12-16 meshes of the same volume amount.%为研究橡胶颗粒对普通混凝土性能的变化趋势，论文分析了不同橡胶颗粒掺量的混凝土路用性能．通过密度、抗折强度、抗压强度及劈裂强度试验，研究掺橡胶颗粒的混凝土基本力学性能及物性的变化规律；采用噪声仪研究了橡胶混凝土的减振降噪效果．研究结果表明：随着橡胶颗粒掺量的增加，橡胶混凝土的密度、抗折、抗压及劈裂强度、压折比及噪声水平逐渐降低；抗折及劈裂强度降低速率明显慢于抗压强度；橡胶混凝土力学性能随龄期的增长率比素混凝土的要慢；总体上说，5～8目橡胶颗粒掺入混凝土中的效果稍优于12～16目的．