预制轻质泡沫混凝土墙板的制备及性能测试研究  

Preparation and experimental study on thermal characteristics of lightweight prefabricated nano-silica aerogel foam concrete wall panels

作　　者：韩嫣红 HAN Yan-hong

机构地区：[1]国信(山东)检验检测中心有限公司,山东济南250101

出　　处：《砖瓦》2023年第12期31-33,共3页Brick-tile

摘　　要：通过初步设计和试验优化,确定了纳米二氧化硅气凝胶泡沫混凝土的最佳配合比。在对预制墙板尺寸、配筋、界面形式进行设计的基础上,研制出一种满足我国寒冷地区使用要求的预制泡沫混凝土墙板。分别测试了材料的干容重、导热系数、抗压强度和孔隙率。此外,通过扫描电子显微镜(SEM)对泡沫混凝土的微观特性进行了测试。在稳态和非稳态条件下测试了墙板的热特性,稳态传热系数为0.5518W/(m2·K)。The optimal mix ratio of nano-silica aerogels foamed concrete is determined by preliminary design and orthogonal test optimization.Based on the design of the size,reinforcement and interface form of the pre-cast foam concrete wall panel,a precast foam concrete wall panel which can meet the requirements of cold area in China is developed.The dry bulk density,thermal conductivity,compressive strength and porosity of the ma-terials are tested respectively.In addition,the microscopic properties of foamed concrete are tested by scan-ning electron microscopy(SEM).The thermal characteristics of the wall panel are tested under both steady and unsteady conditions,and the steady heat transfer coefficient is 0.5518W/(m2·K).

关 键 词：泡沫混凝土 预制墙板 试验研究 稳态传热 

分 类 号：TU528.2[建筑科学—建筑技术科学]