钢纤维增强自密实橡胶混凝土力学性能研究

采用正交试验设计的方法,研究了钢纤维掺量、橡胶粉掺量、水胶比和砂率对钢纤维自密实橡胶混凝土力学性能的影响。研究结果表明,钢纤维自密实橡胶混凝土表观密度随着钢纤维掺量的增加而逐渐增加,随着橡胶粉掺量、水胶比与砂率的增加而逐渐减小;抗压强度随着钢纤维掺量、橡胶粉掺量、水胶比与砂率的增加有逐渐减小的趋势;劈裂抗拉强度随着钢纤维掺量的增加而增加,随着橡胶粉掺量增加而减小;拉压比随着钢纤维、橡胶粉掺量的增加逐渐增加,但随着水胶比与砂率的增加,出现了波动。最终得出:钢纤维自密实橡胶混凝土的韧性优于基准自密实混凝土。

Research on Mechanical Properties of Self-compacting Rubberized Concrete Reinforced with Steel-fiber

The influence of the dosage of steel fiber, the content of rubber powder, the water-binder ratio and the sand ratio on mechanical properties of Self-compacting Rubberized Concrete Reinforced with Steel-fiber(SRCRS)were researched by means of orthogonal experiment. The research results showed that density of SRCRS increased with the increase of added dosage of steel-fiber and the decrease of rubber added content, the water-binder ratio and the sand ratio; The compressive strength of SRCRS decreased with the increase of added dosage of steel-fiber, rubber added content, the water-binder ratio and the sand ratio; The splitting tensile strength increased with the increase of steel fiber content, and the decrease of rubber powder content; The ratio of tension to compression increased tremendously with the increase of steel fiber, rubber powder content. But with the increase of water-binder ratio and sand ratio, there was a wave of volatility. A conclusion can be drawn that the toughness of SRCRS is much better than that of ordinary self-compacting concrete in the end.