灰缝厚度对蒸压加气混凝土砌块墙体热工性能的影响研究  

Study on the Influence of Ash Seam Thickness on Thermal Performance of Autoclaved Aerated Concrete Block Wall

作　　者：庄炜 曹权宇 李永 郝文辉 李效禹 ZHUANG Wei;CAO quanyu;LI Yong;HAO Wenhui;LI Xiaoyu(Qingxian Housing and Urban-Rural Development Bureau,Cangzhou 062650,China;Hebei Rongzhou Technology Development Co.,Ltd.,Shijiazhuang 050000,China;Hebei Academy of Building Science Co.,Ltd.,Shijiazhuang 050227,China;College of Civil Engineering,Hebei University of Science and Technology,Shijiazhuang 050018,China;China Academy of Building Research Co.,Ltd.,Beijing 100013,China)

机构地区：[1]青县住房和城乡建设局,河北沧州062650 [2]河北融舟科技发展有限公司,河北石家庄050000 [3]河北省建筑科学研究院有限公司,河北石家庄050227 [4]河北科技大学建筑工程学院,河北石家庄050018 [5]中国建筑科学研究院有限公司,北京100013

出　　处：《粉煤灰综合利用》2024年第4期154-157,共4页Fly Ash Comprehensive Utilization

摘　　要：为探究蒸压加气混凝土砌块在建筑节能方面存在的问题,利用AIRPAK软件对蒸压加气混凝土砌块墙体的热工性能进行研究。通过对300 mm厚的B04级蒸压加气混凝土砌块墙体进行不同厚度砌筑灰缝进行建模研究,探讨不同灰缝厚度情况下蒸压加气混凝土砌块墙体传热系数变化情况以及在墙体外侧粘贴分别25 mm和50 mm石墨聚苯板保温时灰缝对墙体传热系数的影响。结果表明:当砌筑灰缝厚度为8~15 mm时,墙体传热系数与不考虑灰缝时的传热系数增加比例为15.152%~31.313%,在建筑热工计算时不能忽视灰缝对墙体传热造成的影响;随着保温层厚度的增加,灰缝对传热系数的影响逐渐减小,但不可忽略;当保温层厚度为25 mm和50 mm时,传热系数增加比例分别为6.584%~15.265%和4.231%~21.154%。In order to explore the problems existing in building energy saving of autoclaved aerated concrete block,the thermal performance of autoclaved aerated concrete block wall is studied by AIRPAK software in this paper.Through modeling research on the ash joint of B04 autoclaved aerated concrete block wall with different thickness of 300 mm,the change of heat transfer co-efficient of autoclaved aerated concrete block wall with different ash joint thickness and the influence of ash joint on heat transfer coefficient of wall with 25 mm and 50 mm graphite polystyrene board pasted on the outside of wall are discussed.The results show that when the thickness of the ash joint is 8~15 mm,the increase ratio of the heat transfer coefficient of the wall is 15.152%~31.313%,and the influence of the ash joint on the heat transfer of the wall cannot be ignored in the calculation of building thermal engineering.;With the increase of the thickness of the insulation layer,the influence of the ash joint on the heat transfer coefficient decreases gradually,but it can not be ignored;When the thickness of insulation layer is 25 mm and 50 mm,the increase ratio of heat transfer coefficient is 6.584%~15.265%and 4.231%~21.154%.

关 键 词：灰缝 砌筑砂浆 传热系数 蒸压加气混凝土砌块 

分 类 号：TU37[建筑科学—结构工程]