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| 水泥基材料断裂性能与微孔结构研究 | |
| 引用本文： | 庞超明,LEUNG C.K.Y,孙伟,徐剑. 水泥基材料断裂性能与微孔结构研究[J]. 建筑材料学报, 2011, 14(4): 523-527. DOI: 10.3969/j.issn.1007-9629.2011.04.017 |
| 作者姓名： | 庞超明 LEUNG C.K.Y 孙伟 徐剑 |
| 作者单位： | 1. 东南大学材料科学与工程学院,江苏南京211189;东南大学江苏省土木工程材料重点实验室,江苏南京211189 2. 香港科技大学土木工程与环境系,香港九龙 3. 江苏省交通科学研究院股份有限公司长大桥梁健康检测与诊断交通行业重点实验室,江苏南京,211112 |
| 基金项目： | 国家重点基础研究发展计划(973计划)项目(2009CB623200); 香港研究基金资助项目(GRF616107) |
| 摘 要： | 以高掺量粉煤灰HDCC配合比为基础,测试了不同龄期基体的抗压强度、断裂韧度,同时采用MIP测试了其微孔结构.结果表明:养护28 d主要改善基体大于50 nm的大毛细孔结构,养护28 d后再热养护7d主要改善其小于200 nm的微孔分布,而养护28 d后再继续热养护7d以上则仅仅改善其小于20 nm的微孔分布,且改善效果... |
| 关 键 词： | 水泥基复合材料 微孔分布 微观性能 |
Fracture Properties and Micro-pore Structure of Cementitious Composites |
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| PANG Chao-ming,LEUNG C.K.Y,SUN Wei,XU Jian. Fracture Properties and Micro-pore Structure of Cementitious Composites[J]. Journal of Building Materials, 2011, 14(4): 523-527. DOI: 10.3969/j.issn.1007-9629.2011.04.017 | |
| Authors: | PANG Chao-ming LEUNG C.K.Y SUN Wei XU Jian |
| Affiliation: | PANG Chao-ming 1,2,LEUNG C.K.Y.3,SUN Wei1,XU Jian4(1.School of Materials Science and Engineering,Southeast University,Nanjing 211189,China,2.Jiangsu Key Laboratory of Construction Materials,3.Department of Civil and Environment Engineering,Hong Kong University of Science and Technology,Hong Kong,4.Key Laboratory of Large-Span Bridge Health Inspection & Diagnosis Technology Ministry of Communication,Jiangsu Transportation Research Institute Co.,Ltd.,Nanjing... |
| Abstract: | Fracture toughness shows the ability to resist crack,and it is an important property of cementitious composites and design basis to high ductility cementitious composites(HDCC).Compressive strength and fracture toughness at different curing age were measured,and also MIP were conducted,based on the mixture of matrix of HDCC with high content fly ash.Test results show that curing at the first 28d will mainly improve the macro-pore,hereafter chiefly improve the micro-pore.Effect of age,ratio of water to binde... |
| Keywords: | cementitious composity pore distribution microstructure property |
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