橡胶改性页岩陶粒混凝土的耐磨性能

Abrasion resistance of rubber-modified shale ceramsite concrete

用废旧橡胶粉取代页岩陶粒水泥混凝土中部分砂的成分,配制成橡胶轻骨料混凝土,进行了耐磨性能的测试,并通过微观结构的研究对其耐磨机理进行了分析比较。研究表明:橡胶粉与水泥石的界面结合较好,使得橡胶粉能充分发挥其阻裂作用,橡胶轻骨料混凝土的耐磨性能要高于轻骨料混凝土的耐磨性能。而羧基丁苯乳液的加入削弱了橡胶粉与水泥石界面的结合程度,导致橡胶轻骨料混凝土耐磨性能的降低,但是其耐磨性能仍高于轻骨料混凝土的耐磨性能。

The abrasion resistance of rubberized lightweight aggregate concrete （RLC） was tested,which was made by using recycled rubber pow der to replace the sand of shale ceramsite concrete.And the abrasion resistance mechanism was analyzed by the microstructure.The research results show that the rubber powder can bring action of its crack arrest into full play because of the better status of rubber powder combined with cement paste of RLC.Thus the abrasion resistance of RLC is better than that of lightweight aggregate concrete （LC）.On the contrary, adding carboxylic styrene-butadiene rubber letax（ SD622S ） into RLC would weaken the status of rubber powder combined with cement paste ofRLC, and reduced the abrasion resistance of RLC.But its abrasion resistance is still better than that of LC.