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高强高韧性轻集料混凝土具有轻质高强、高韧性、抗渗性佳、隔热保温等显著优点,适宜作钢箱梁桥桥面铺装材料。针对高强高韧性轻集料混凝土的这些特点,研究了纤维和聚合物掺量对轻集料混凝土工作性能、抗压强度、抗折强度、弯曲韧性的影响规律,成功配制出干表观密度小、抗压强度等级达到C50、抗折强度大于8.0 MPa、韧性指数3η0大于28的钢箱梁桥面铺装材料高强高韧性轻集料混凝土。
High strength and high toughness lightweight aggregate concrete with lightweight high strength, high toughness, good impermeability, thermal insulation and other significant advantages, suitable for steel girder bridge deck pavement materials. According to these characteristics of high strength and high toughness lightweight aggregate concrete, the effects of fiber and polymer content on the workability, compressive strength, flexural strength and flexural toughness of light aggregate concrete were studied. The dry apparent density , Compressive strength of C50, flexural strength greater than 8.0 MPa, toughness index 3η0 greater than 28 steel box girder bridge deck material high strength and high toughness lightweight aggregate concrete.