2015年2月下第44卷第4期
DOI:10.7672/sgjs2015040111
施工技术
CONSTRUCTION TECHNOLOGY
泡沫混凝土自保温墙体传热性能试验研究
王海军，姚勇2，陈代果2高伟3，严洁
（1.泸州市住房和城乡建设局，四川泸州646350；2.西南科技大学土木工程与建筑学院，
四川绵阳621010；3.成都市青羊区建筑工程总公司，四川成部620000）
【摘要】泡沫混凝土是一种建筑节能材料，具有轻质、保温隔热、隔声、防火耗能等优异性能。通过对外保温、内保温和自保温围护墙体的热工缺陷、传热性能等进行测试，用建筑传热理论分析各类墙体的传热系数、热情性指标和技术经济特征值，得出：外保温对热桥的阻隔作用大于内保温，泡沫混凝土自保温墙体室内热环境最好；泡沫混凝土蓄热系数大于EPS保温板，自保温墙体的热稳定性好，抵抗外部温度波动的能力强；泡沫混凝土自保温墙体传热
性能良好，技术经济特征量较小，具有一定的市场应用前景。【关键词］混凝土；自保温墙体；热工性能；传热系数；试验
【中图分类号］TU551.1
【文献标识码］A
［文章编号】1002-8498(2015)04-0111-05
Experimental Research on Heat TransferPerformance for
Self-insulation Foam-concrete Wall
WangHaijun',Yao Yong’,Chen Daiguo'.Gao Wei,Yan Jie
(1. Luzhou City Housing and Urban Construction Bureau, Luzhou, Sichuan 646350, China; 2. School of
Ciril Engineering and Architecture, Southarest Unirersity of Science and Technology, Mianyang, Sichuan 621010, China; 3. Construction Engineering Corporation, Qingyang District,
Chengdu, Sichuan 620000, China)
Abstract : Foam-concrete was a building energy-saving material with many excellent performances such as lightweight,thermal insulation,sound insulation,fire，power consumption.Through testing thethermal defect and heat transfer performance of external-insulation，internal-insulation and self-insulation retaining walls, and analyzing these walls heat transfer coefficient, thermal inertia indicator and eigenvalue on technical and economic with the building heat transfer theory, some conclusions are taken that : the external-insulation's barrier-effect for thermal-bridges was greater than internal-insulation, and foam-concrete self-insulation wall had the best indoor thermal-environment; foam-concrete' s regenerative coefficients were greater than EPS insulation board, self-insulation wall had great thermal stability and resistance to external temperature fluctuations; foam-concrete self-insulation wall had good heat transfer performance, smaller eigenvalue on technical and economic which have a better marketing prospects.
Key words : concrete; self-insulation walls; thermal performance; heat transfer coefficients; experimental
我国目前正处于城市建设高峰期。据统计， 2010年我国建筑总面积已经超过400亿m，建筑能耗占社会总能耗的30%左右1。每年通过建筑围护结构损失的能耗占建筑总能耗的50%以上，其中围护结构中墙体所占面积最大，能耗也最多。因此，建筑墙体保温成为建筑节能的关键，开发超低导热系数的保温墙材和探究与之配套的节能构造
*“十二五国家科技支撑计划课题：保温与结构一体化墙体及屋面材料制造与应用技术研究（2011BAE14B05-02
[作者简介］王海军，颈士，E-mail：whjxnkjdx@163.com【收稿日期］2014-01-06
成为该领域的研发重心。
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泡沫混凝土是以普通硅酸盐水泥为无机胶结料，粉煤灰为掺加料，砂为骨料，掺人动物蛋白类发泡剂制成的轻质混凝土[2]，具有轻质多孔、保温隔热、吸声隔声、防火减震等优良性能符合我国建筑节能政策。目前广泛使用的膨胀型聚苯乙烯板(EPS)抗燃等级达不到A级，具有重大安全隐患，是导致央视新台址、济南奥体中心、哈尔滨双子星大厦等火灾火势迅速蔓延的重要原因。因此，泡沫混凝土有望成为我国墙体材料的下一代替代品。
外围护结构有无保温隔热措施，以及保温隔热