摘要
粉煤灰页岩陶粒泡沫混凝土属于复合建筑保温材料,兼具良好的隔热性、阻燃性和耐久性。为了解粉煤灰页岩陶粒泡沫混凝土的物理力学与导热性能,制备了6种不同页岩陶粒掺量的混凝土试件开展室内试验,分析了页岩陶粒掺量对粉煤灰泡沫混凝土物理力学与导热性能的影响规律。研究结果表明:(1)孔隙率和吸水率随页岩陶粒掺量的增大而线性减小,而干表观密度和导热系数随之线性增大;(2)干燥收缩率随页岩陶粒掺量的增大而逐渐减小,最佳掺量为20%左右;(3)力学性能最佳的粉煤灰页岩陶粒混凝土中的页岩陶粒掺量为40%左右。
Fly ash shale ceramsite foamed concrete is a kind of composite building insulation material,which has good heat insulation,flame re-tardance and durability.In order to learn the physical mechanics and thermal properties of fly ash shale ceramsite foamed concrete,6 kinds of con-crete with different shale ceramsite contents are prepared to carry out the laboratory test,and the influence of shale ceramsite content on the physical mechanics and thermal conductivity of fly ash foamed concrete is analyzed.The results show that(1)The porosity and water absorption decrease lin-early with the increase of shale ceramsite content,while the dry apparent density and thermal conductivity increase linearly;(2)The drying shrinkage rate decreases with the increase of shale ceramsite content,and the optimal content is about 20%;(3)The content of shale ceramsite in the fly ash shale ceramsite concrete with the best mechanical properties is about 40%.
作者
胡瑛莉
HU Yingli(Guangxi Vocational&Technical Institute of Industry,Nanning 530004,China)
出处
《化学与粘合》
CAS
2023年第2期97-100,113,共5页
Chemistry and Adhesion
基金
国家自然科学基金项目(编号:51668009)
广西高校中青年教师科研基础能力提升项目(编号:2021KY1272)。
关键词
粉煤灰
页岩陶粒
泡沫混凝土
物理力学特性
导热性能
fly ash
shale ceramsite
foamed concrete
physical mechanical properties
thermal conductivity
