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为去除废旧轮胎制备胶粉过程中产生的硬脂酸锌,对橡胶微粒进行NaOH溶液浸泡处理。分别掺入不同粒径、不同掺量(等体积替代砂)的橡胶微粒制备橡胶混凝土试件,对浸泡前后试件的抗压强度、抗折强度、弹性模量、极限应变率和破坏形态进行了一系列的试验研究。结果表明:在橡胶微粒掺量增加的情况下,橡胶混凝土的抗压强度、抗折强度和弹性模量均呈现下降的趋势,但下降幅度略有不同,极限应变量有所提高,NaOH溶液浸泡处理橡胶微粒能明显提高橡胶混凝土的韧性和变形能力。
In order to remove the zinc stearate produced during the process of preparing the waste tires, the rubber particles are soaked in NaOH solution. The rubber concrete specimens with different particle sizes and different dosages (equal volume of substitute sand) were respectively dipped into rubber concrete specimens to test the compressive strength, flexural strength, modulus of elasticity, ultimate strain rate and failure modes of the specimens before and after soaking A series of experimental studies. The results show that the compressive strength, flexural strength and elastic modulus of rubber concrete all show a decreasing trend with the increase of the rubber particle content, but the decreasing range is slightly different with the increase of the ultimate strain, soaking in NaOH solution Processing rubber particles can significantly improve the toughness and deformation capacity of rubber concrete.