Yajie Liu, Haibo Zhang, Wei Zhou
The addition of waste rubber particles to cement mortar will reduce its strength, thus limiting the application of rubber cement mortar. The purpose of this study was to investigate the surface activation effect of different surface treatment methods on rubber particles of waste tires. In this experiment, water, NaOH and acetone were used to pretreat the surface of 40 mesh waste rubber particles. The contact Angle test was used to characterize the hydrophilicity of the pretreated rubber particles, and the SEM was used to analyze the micromorphology of the modified rubber particles. At the same time, the workability and mechanical properties of the modified cement mortar were also tested in this experiment to verify the practical application value of the pretreatment method in this experiment. The test shows that NaOH can effectively improve the surface hydrophilicity of rubber particles, improve the combination of rubber particles and cement mortar, and improve the compressive strength.
Rubber Particles; Cement Mortar; Surface Modification; Workability; Compression Strength