聚合物对轻骨料混凝土力学性能及微观结构的影响

Effect of Polymer on Mechanical Properties and Microstructure of High Performance Lightweight Aggregate Concrete

针对聚合物改性轻骨料混凝土力学性能开展研究,并对其微观结构进行分析。实验结果表明,相较于普通轻骨料混凝凝土,聚合物改性轻骨料混凝土的立方体抗压强度、轴心抗压强度、弹性模量降低,而劈裂抗拉强度得到提高,试件拉压比随聚合乳液的掺入而得到不同程度的提高。聚合物改性轻骨料混凝土中砂浆与轻骨料界面结合紧密。

This paper studies the influences of polymer on the mechanical properties and microstructure of high performance lightweight aggregate concrete.The experimental results show that,compared to the ordinary lightweight aggregate concrete,the compressive strength and the elastic modulus of high performance lightweight aggregate concrete with polymer decrease,while the tensile strength and tension and compression ratio increase.The surface between hydration products and lightweight aggregate are tightly combined.