
1. 防灾减灾湖北省重点实验室(三峡大学)
2. 三峡大学土木与建筑学院
3. 宜昌市建筑节能推广中心
Published:2025
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高德军, 张贺鹏, 李露, et al. 页岩陶粒混凝土导热系数计算模型研究[J]. 2025, 47(2): 76-83.
高德军, 张贺鹏, 李露, et al. 页岩陶粒混凝土导热系数计算模型研究[J]. 2025, 47(2): 76-83. DOI: 10.13393/j.cnki.issn.1672-948X.2025.02.011.
采用平板热流计法测定了页岩陶粒混凝土(lightweight shale ceramsite concrete
LSCC)及其砂浆基体的导热系数,试验研究了水灰比、体积砂率、水泥用量和陶粒等级对导热系数的影响,探讨了LSCC抗压强度和孔隙水饱和度与导热系数的关系;按照陶粒和砂浆基体并联传热的方式,建立了考虑孔隙水饱和度影响的LSCC导热系数预测模型.结果表明:LSCC的导热系数随着水灰比的增大而减小,随着体积砂率、水泥用量和陶粒等级的提高而增大,与其抗压强度和孔隙水饱和度均存在正相关性,且与孔隙水饱和度符合线性关系;模型可以较为准确地预测干燥状态下LSCC的导热系数;孔隙水饱和度对LSCC导热系数的影响较大;由模型的计算结果可知,在LC25~LC35范围内,混凝土中孔隙水饱和度每增加0.1
导热系数平均增大约0.171 W/(m·K).
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