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为提高粉状轮胎橡胶微粒与水泥浆间的粘附力,在其表面用饱和NaOH溶液进行表面改性。分别用含10%的未处理橡胶和10%经过NaOH处理过的橡胶的测试试件(水灰比0.36)进行电子显微镜扫描(S.E.M)、吸水性、密度、弯曲强度、抗压强度、抗磨耗性、弹性模量和断裂能等的测试。断裂能、弯曲强度和抗压强度的测试结果表明,添加橡胶微粒可以提高试件的韧性和减小试件的空隙率。由磨耗引起的质量损失和电子显微镜的观察显示,通过NaOH表面处理可以提高橡胶与基质的粘附性。
In order to improve the adhesion of powdered tire rubber particles and grout, the surface is modified with saturated NaOH solution. Electron microscopy (SEM), water absorption, density, flexural strength, compressive strength, abrasion resistance, abrasion resistance and abrasion resistance were carried out using test pieces containing 10% of untreated rubber and 10% of NaOH treated rubber Sex, Elastic Modulus, and Fracture Energy. The test results of fracture energy, flexural strength and compressive strength show that the addition of rubber particles can improve the toughness of the specimen and reduce the porosity of the specimen. The mass loss caused by abrasion and observation by electron microscopy show that the adhesion of the rubber to the matrix can be improved by NaOH surface treatment.