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| 混凝土孔径分布与强度关系的灰色系统研究 | |
| 引用本文： | 冯庆革,卢凌寰,杨绿峰. 混凝土孔径分布与强度关系的灰色系统研究[J]. 广西大学学报(自然科学版), 2007, 32(3): 255-258 |
| 作者姓名： | 冯庆革 卢凌寰 杨绿峰 |
| 作者单位： | 1. 广西大学,化学化工学院,广西,南宁,530004;广西大学,工程防灾与结构安全重点实验室,广西,南宁,530004 2. 广西大学,化学化工学院,广西,南宁,530004 3. 广西大学,工程防灾与结构安全重点实验室,广西,南宁,530004 |
| 基金项目： | 教育部科学技术研究重点项目(206111)，教育部留学回国基金(教外司留[2006]331号)，广西科学基金项目(桂科青0640010) |
| 摘 要： | 采用压汞仪测定不同水灰比下混凝土的孔径分布;以灰色系统理论研究不同孔径范围对混凝土强度的影响.结果表明,不同的孔径范围对混凝土强度的影响是不同的,养护龄期为7 d和28 d的混凝土的抗压和抗拉强度与孔径范围为10~20 nm的关联度最大,91 d时与>400 nm的孔径关联度最大.随着龄期的增长,孔径为50 nm以下孔的关联度不断减小,50 nm以上孔的关联度不断增大.在此基础上建立了混凝土28 d强度与孔径的灰色模型GM(1,4). |
| 关 键 词： | 混凝土 孔径分布 灰色系统 混凝土强度 |
| 文章编号： | 1001-7445（2007）03-0255-04 |
| 修稿时间： | 2007-07-21 |
Influence of pore size distribution of concrete on the strength with grey system theory |
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| FENG Qing-ge,LU Ling-huan,YANG Lu-feng. Influence of pore size distribution of concrete on the strength with grey system theory[J]. Journal of Guangxi University(Natural Science Edition), 2007, 32(3): 255-258 | |
| Authors: | FENG Qing-ge LU Ling-huan YANG Lu-feng |
| Affiliation: | 1. Collge of Chemistry and Chemical Engineering,Guangxi University ,Nanning 530004 ,China; 2. Laboratory of Disaster and Engineering Security ,Guangxi University ,Nanning 530004,China |
| Abstract: | The relationship between the pore size distribution of concrete and compressive/tensile strength was studied with gray system theory.Pore size distribution of concrete is measured by mercury intrusion porosimetry.The results show that the pore size range of 10~20 nm has a maximum effect and a great contribution on the strength of concrete with 7 d and 28 d,but for 91 d,50~400 nm of concrete has the biggest grey connection degree to compressive and tensile strength. As curing ages increase,grey connection degrees of pore size range smaller than 50 nm decrease while bigger than 50nm increase.The grey model of GM(1,4) between the pore size distribution of concrete and strength was established. |
| Keywords: | concrete pore size distribution grey system concrete strength |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |