| 粉煤灰在预制桥梁高性能砼中的应用研究 |
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| 引用本文： | 籍凤秋,宋少民,刘娟红,罗永会,张希青.粉煤灰在预制桥梁高性能砼中的应用研究[J].粉煤灰综合利用,2000,14(3):8-12. |
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| 作者姓名： | 籍凤秋 宋少民 刘娟红 罗永会 张希青 |
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| 作者单位： | 石家庄铁道学院建筑工程系,050043 |
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| 摘 要： | 对粉煤灰在预制桥梁高性能混凝土中的应用进行了试验研究 ,探讨了粉煤灰掺量、砂率、水胶比、减水剂的掺加方法 ,以及膨胀剂、消泡剂等因素对混凝土的工作性、强度、抗渗性和抗冻性的影响 ,得出了 C60预制桥梁粉煤灰混凝土的最佳配合比 ,分析了粉煤灰的作用机理 ,综合评价了粉煤灰在预制桥梁高性能混凝土中的利用价值
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| 关 键 词： | 粉煤灰 预制桥梁 高性能混凝土 强度 抗渗性 抗冻性 |
A Research on the Application of Fly Ash to High Performance Concrete Used for Precast Bridges |
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| Ji Fengqiu,song Shaomin,Liu Juanhong,Lou Yonghui,Zhang Xiqing.A Research on the Application of Fly Ash to High Performance Concrete Used for Precast Bridges[J].Fly Ash Comprehensive Utilization,2000,14(3):8-12. |
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| Authors: | Ji Fengqiu song Shaomin Liu Juanhong Lou Yonghui Zhang Xiqing |
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| Abstract: | In this paper the research is invesigated on the application of modified fly ash in HPC used for precast bridges. The influence of the different amount fly ash, sand ratio, water binding materials ratio, the different joining ways of water reduce agent, expansive agent, eliminating bubble agent and so on are discussed based on our experiments in the aspects of workability, strength, permeability resistance and frost resistance. The best mix of C60 HPC used for precast bridges is obtained. Some ideas about the mechanism of the actions of fly ash on HPC are also proposed according to our analysis. The utilization significance of fly ash in HPC used for precast briages is compositively evaluated. |
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| Keywords: | Fly Ash \ Precast Bridge \ High Performence Concrete \ Strength Permeability resistance \ Frost resistance |
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