多孔混凝土的孔隙模型研究  

Research on the Model of Pore in the Porous Concrete

作　　者：李荣炜[1,2] 余其俊[1,2] 韦江雄[1,2] 钟根[1,2] 许燕莲 

机构地区：[1]华南理工大学材料科学与工程学院,广州510640 [2]华南理工大学特种功能材料教育部重点实验室,广州510640 [3]东莞市水利工程质量检测站,东莞523016

出　　处：《武汉理工大学学报》2009年第19期11-15,共5页Journal of Wuhan University of Technology

基　　金：东莞市科技局科技攻关计划(184)

摘　　要：将多孔混凝土中包裹水泥浆体的粗骨料堆积形态视为球形颗粒堆积，借鉴Koenders提出的带状模型，建立多孔混凝土孔隙率与粗骨料浆体包裹层厚度之间的关系式，通过试验确定公式中的参数并验证其模型和计算的合理性。试验结果表明：依据该公式能有效计算出不同粗骨料浆体包裹层厚度下多孔混凝土的孔隙率。当浆体包裹层厚度变化于439-973μm时，多孔混凝土的孔隙率范围值为21．8％～33．8％。When regarding the coarse aggregates wrapped with cement paste in porous concrete as the accumulation model of spherical particles, relationship between the porosity of porous concrete and the thickness of cement paste is established based on Koenders＇ ribbon model, the parameters in the formula and the rationality of model and calculation are identified by experiment. The result shows that the porosity of porous concrete can be effectively deduced from the formula according to the thickness of cement paste wrapping coarse aggregate particles. When the thickness of cement paste lie from 439 μm to 973 μm the porosity of porous concrete varies between 21.8% and 33.8%.

关 键 词：多孔混凝土 浆体厚度 孔隙率 球形堆积 

分 类 号：TU528.01[建筑科学—建筑技术科学]