摘要
为探究泡沫混凝土在粉煤灰、膨胀珍珠岩和发泡剂的不同掺量条件下对其干密度、28d抗压强度、导热系数等性能的影响,分别以0~60%粉煤灰掺量、0~20%膨胀珍珠岩掺量及1%~4%发泡剂掺量为参数展开试验,并在此基础上,进行泡沫混凝土墙和砖砌体墙热工性能分析。依据试验结果得出:随着粉煤灰掺量的增加,泡沫混凝土的干密度和28d抗压强度先增加到一定阶段后逐渐降低,而导热系数和吸水率逐渐减小;在不断增加膨胀珍珠岩掺量或发泡剂掺量的过程中,泡沫混凝土干密度、28d抗压强度和导热系数随之逐渐降低,而吸水率逐渐增大;烧结多孔砖墙的实测传热系数约为泡沫混凝土墙的1.6倍。
In order to explore the influence of different content of fly ash,expanded perlite and foaming agent on the dry density,28d compressive strength,thermal conductivity and other properties of foam concrete,some experiments were conducted with the addition of 0~60%fly ash,0~20%expanded perlite and 1%~4%foaming agent as parameters,and on this basis,thermal performance analysis of foam concrete wall and brick masonry wall was carried out.According to the test results,with increasing of the amount of fly ash,the dry density and 28 day compressive strength of foam concrete first increased to a certain stage and then gradually decreased,while the thermal conductivity and water absorption gradually decreased;with increasing of the content of expanded perlite or foaming agent,the dry density,28d compressive strength and thermal conductivity of foam concrete gradually decrease,while the water absorption gradually increases.The measured heat transfer coefficient of sintered porous brick wall is about 1.6 times that of foam concrete wall.
出处
《福建建设科技》
2023年第5期59-62,共4页
Fujian Construction Science & Technology
关键词
泡沫混凝土
热工性能
干密度
抗压强度
导热系数
foam concrete
thermal performance
dry density
compressive strength
thermal conductivity
