| 粉煤灰混凝土抗盐冻性能的研究 |
| |
| 引用本文： | 周茗如,高扬,孙云飚,陶岚,乔宏霞.粉煤灰混凝土抗盐冻性能的研究[J].粉煤灰综合利用,2009(4):6-9. |
| |
| 作者姓名： | 周茗如 高扬 孙云飚 陶岚 乔宏霞 |
| |
| 作者单位： | 1. 兰州理工大学土木学院,兰州,730050
2. 中国石油天然气管道工程有限公司东北分公司,沈阳,110031 |
| |
| 基金项目： | 甘肃省建设科技攻关项目，甘肃省自然科学基金项目 |
| |
| 摘 要： | 研究粉煤灰混凝土在水中和硫酸镁溶液中的抗冻性，探讨粉煤灰掺量、含气量及砂率对混凝土抗冻性的影响。试验结果表明：粉煤灰掺量25％对混凝土的抗冻盐性能有利，在相同粉煤灰掺量时，适量引气可大大延缓混凝土相对动弹性模量的下降，在保持水胶比一定时，适当的砂率也会在一定程度上改善混凝土的抗盐冻性能。
|
| 关 键 词： | 粉煤灰 冻融循环 质量损失 相对动弹性模量 |
Research on Salt-frost Resistance of Fly Ash Concrete |
| |
| Affiliation: | (1. Lanzhou University of Technology, Lanzlaou, 730050 2. China Petroleum Pipeline Engineering Corporation northeast branch, 110031 ) |
| |
| Abstract: | The freezing resistance of concrete in water and 5 % bitter salt （ Mg2 SO4 ） solution were researched. The effects of the substitution ratio of concrete by fly ash,air content and sand ratio on the freezing resistance of concrete were investigated. The result showed that the concrete was replaced by 25 % fly ash which was good for the freezing resistance of concrete ;in the same substitution ration of cement by fly ash, drawing-in proper air could stave the receding of the relative dynamic modulus of elasticity; the proper sand ratio could improved the salt-frost resistance of concrete when in the same water-binder ratio. |
| |
| Keywords: | fly ash frezzing and thawing cycle weight loss relative dynamic modulus of elasticity |
| 本文献已被 维普 万方数据 等数据库收录！ |
|
