中型混凝土复合砌块的结构设计与性能研究

Study on structure design and performance of medium-sized concrete composite blocks

中型混凝土复合砌块是砌块装配式建筑的基础构件,也将是我国绿色宜居村镇建设的重要部品部件,符合我国建筑业发展方向。从协调密度等级、强度等级和热工性能角度探讨了中型混凝土复合砌块的结构设计与优化,指出采用多排孔结构、互穿结构和三明治结构制备的中型混凝土复合砌块分别满足我国不同气候地区建筑节能要求。重点研究了互穿结构中型混凝土复合砌块用泡沫混凝土配合比设计和性能,选用密度等级为B11的泡沫混凝土作为混凝土基体,硬泡聚氨酯作为高效保温材料,所制互穿结构中型混凝土复合砌块密度等级为800级,强度等级为MU3.5,传热系数为0.44W/(m2·K);抗冻性指标为D35,满足我国寒冷地区建筑节能使用要求。

This paper focuses on the design and performance of the foamed concrete mix for the interpenetrating structure of medium-sized concrete composite blocks.The foamed concrete with density grade B11 is selected as the concrete matrix,and the rigid foam polyurethane is used as the high-efficiency insulation material.The interpenetrating structure of the medium-sized concrete composite masonry is selected.The block density grade is 800,the strength grade is MU3.5,the heat transfer coefficient is 0.44W/(m2·K);the frost resistance index is D35,which meets the requirements of building energy conservation in cold regions of our country.