| 引用本文: | 潘钢华,秦鸿根,孙伟,张金山,王修田,李松泉,黄卫华,姜阳.粉煤灰混凝土冻融破坏机理研究[J].建筑材料学报,2002,(1):37-41 |
| |
|
|
| 摘要: |
| 研究了不同粉煤灰掺量，冻融方式和混凝土组成材料的变化对混凝土在冻融循环中损伤程度的影响，证明了C30，C50掺粉煤灰混凝土的冻融破坏机理主要是结冰压力破坏，从而为粉煤灰混凝土抗冻性和耐久性的改善措施提供了依据。 |
| 关键词: 冻融循环 破坏机理 粉煤灰混凝土 |
| DOI： |
| 分类号:TU528.2 |
| 基金项目:南京长江第二大桥建设指挥部资助项目 |
|
| Study of Frost Resistance Mechanism of Fly Ash Concrete |
|
PAN Gang hua QIN Hong gen SUN Wei ZHANG Jin shan WANG Xiu tian LI Song quan HUANG Wei hua JIANG Yang
|
| Abstract: |
| There is some disagreement on the mechanism and test results of concrete resistance to freeze/thaw action. The factors influencing damage of concrete were tested with different fly ash dosages, manner of freeze/thaw action and constitution of concrete. The results show that the mechanism of failure of concrete with strength grade 50 MPa under freeze/thaw cycle is mainly icing pressure. The research conclusions can be used as a base in designing of concrete with fly ash used in some important concrete engineering like Nanjing Second Yangtze River Bridge. |
| Key words: concrete,fly ash,frecze/thaw cycle,failure mechanism, |
