摘要
为制取一种室内被动式湿度控制材料,选用海泡石、木质纤维、膨胀珍珠岩、硅藻泥为骨料,调制一种新型复合调湿砂浆.以不同配比复合调湿砂浆为对象,通过实验筛选出综合性能最优的配比,并将最优配比的复合调湿砂浆应用到室内墙体以进行性能测试.以长沙地区某宿舍楼的两个房间为实验对象,其中一个房间的墙内表面材料为复合调湿砂浆,另一房间的墙内表面材料为普通水泥砂浆,分别测试一月和四月的室内温湿度分布,分析复合调湿砂浆对房间温湿度分布的影响.同时以实际湿缓冲性能来评价该复合调湿砂浆的调湿性能,并对比评估两个房间的霉菌生长风险.一月和四月的研究结果表明,抹有新型调湿砂浆的内墙具有较佳的湿度控制能力,比抹有普通砂浆的房间相对湿度低6%~14.3%,含湿量低0.3~3.1 g/kg·干空气.在一月份,普通砂浆比复合调湿砂浆霉菌滋生风险高四倍;四月回南天季节,复合调湿砂浆288 h监测中仅6.5 h出现霉菌滋生风险,且明显低于普通房间,是一种有效且低成本的新型调湿环保材料.
This paper proposed a passive composite hygroscopic material to control indoor humidity based on field experiment. A series of aggregates including wood fibre, sepiolite, expanded perlite and diatom ooze were mixed at different ratios to make an optimal composite hygroscopic material for further experiment. Two testing rooms,which were attached with conventional cement mortar（Room 1）and composite hygroscopic material（Room2）,respectively,were built to conduct comparison experiments（mainly testing temperature and humidity） in January and April in 2017 in Changsha, Hunan. The hygroscopic performances were evaluated by the practical Moisture Buffer Value,and performances of indoor environment mold inhibition of two rooms were also analyzed.The results showed that in the two tested seasons,Room 2 outperformed in hygroscopicity than Room 1, where the relative humidity was lower by 6%-14.3% and moisture content was lower by 0.3-3.1 g/kg·a. In the cold Jan-uary,the risk of mold growth in Room 1 was about 4 times higher than that in Room 2,while in humid April,the risk rate of mold growth in Room 2 was only about 2%（6.5 h in monitored 288 h）,which was obviously lower than that in Room 1. The newly studied composite hygroscopic material was found to be efficient and practical in controlling indoor humidity.
作者
谢华慧
龚光彩
吴懿
刘永超
王颖娟
XIE Huahui;GONG Guangcai;WU Yi;LIU Yongchao;WANG Yingjuan(College of Civil Engineering,Hunan University,Changsha 410082,China)
出处
《湖南大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2018年第7期141-149,共9页
Journal of Hunan University:Natural Sciences
基金
国家自然科学基金资助项目(51378186)
国家科技支撑计划项目(2015BAJ03B00)
国际合作与交流专项项目(2010DFB63830)~~
关键词
调湿材料
微观结构
实际湿缓冲性能
霉菌抑制
评估方法
hygroscopic materials
microstructure
practical moisture buffer value
mold inhibition
evaluationmethod
