- 卢军燕1，常 帅2
2021年第11期
摘要
引用本文
摘 要：利用废旧轮胎破碎后的橡胶颗粒替代部分河砂制备了泡沫混凝土，研究了橡胶颗粒掺量、水灰比对混凝土的密度、流动性、抗压强度、劈裂抗拉强度、弹性模量和耐高温性能的影响。结果表明：橡胶颗粒的掺入降低了混凝土的密度、坍落度、抗压强度和弹性模量，但当橡胶颗粒掺量为20％时，试件的抗压强度仍高于10 MPa；试件的劈裂抗拉强度随着橡胶颗粒掺量的增加呈先增后减的趋势，且当橡胶颗粒掺量为20%时强度达到最大；高温对试件的抗压强度不利，与常温相比，经过100 ℃、200 ℃高温处理后，试件的抗压强度分别降低了3.1%~33.0%、25.0%~55.0%。
Abstract: The foamed concrete was prepared by replacing part of river sand with the crushed rubber particles of waste tires. The effects of rubber particle content and water-cement ratio on the density, fluidity, compressive strength, splitting tensile strength, elastic modulus and high temperature resistance of concrete were studied. The results show that the addition of rubber particle reduces the density, slump, compressive strength and elastic modulus of the concrete, but when the rubber particle content is 20%, the compressive strength of the specimen is still higher than 10 MPa. The splitting tensile strength of the specimen first increases and then decreases with the increase of rubber particle content, and reaches the maximum when the rubber particle content is 20%. High temperature is unfavorable to the compressive strength of the specimen. Compared with normal temperature, the compressive strength of the specimen is reduced by 3.1%~33.0% and 25.0%~55.0% after high temperature treatment at 100 ℃ and 200 ℃.
