| 养护制度对粉煤灰复合水泥浆体干燥收缩及孔径分布的影响 |
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| 引用本文： | 孙宇,孙道胜,王爱国,吴修胜.养护制度对粉煤灰复合水泥浆体干燥收缩及孔径分布的影响[J].安徽建筑工业学院学报,2011(2). |
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| 作者姓名： | 孙宇 孙道胜 王爱国 吴修胜 |
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| 作者单位： | 安徽建筑工业学院材料与化学工程学院; |
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| 基金项目： | 国家“973”计划项目(2009CB623105) |
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| 摘 要： | 将水泥试件在水中养护6天和13天后放入干燥养护箱中,测定其质量损失和干燥收缩。采用氮吸附方法测定不同龄期时的孔径分布。结果表明:粉煤灰复合水泥浆体,干燥收缩早期变化较为明显,随着龄期延长,变化逐渐变缓;水养时间延长,干燥收缩减小;不同水养时间养护后,粉煤灰复合水泥浆体4-40nm孔径体积含量减小,相应干燥收缩减小。
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| 关 键 词： | 粉煤灰 水养时间 干燥收缩 质量损失 孔径分布 |
Effect of curing regime on the drying shrinkage and pore-size distribution in fly ash-blended cement paste |
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| SUN Yu,SUN Dao-sheng,WANG Ai-guo,WU Xiu-sheng.Effect of curing regime on the drying shrinkage and pore-size distribution in fly ash-blended cement paste[J].Journal of Anhui Institute of Architecture(Natural Science),2011(2). |
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| Authors: | SUN Yu SUN Dao-sheng WANG Ai-guo WU Xiu-sheng |
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| Affiliation: | SUN Yu,SUN Dao-sheng,WANG Ai-guo,WU Xiu-sheng(College of Materials and chemical engineering,Anhui college of architecture & industry,Hefei 230022,China) |
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| Abstract: | Mass loss,drying shrinkage and pore structure of fly ash blended cement with different curing ages were investigated.Curing age of cement specimens were under water for six days and thirteen days,respectively.Pore size distribution of cement specimens in different curing age were measured by nitrogen adsorption.With the extension of age,the results show that drying shrinkage of the fly ash blended cement paste is more obvious,the change becomes slower.Water prolonged and drying shrinkage decreased.The pore ... |
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| Keywords: | fly ash water-raising time drying shrinkage quality loss pore size distribution |
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