| 矿物掺合料对再生混凝土抗冻性影响的试验研究 |
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| 引用本文： | 尹兴伟,吴相豪.矿物掺合料对再生混凝土抗冻性影响的试验研究[J].混凝土,2012(8):90-93. |
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| 作者姓名： | 尹兴伟 吴相豪 |
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| 作者单位： | 上海海事大学海洋环境工程学院,上海,201306 |
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| 基金项目： | 上海海事大学科研基金项目，上海市本科教育高地建设项目 |
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| 摘 要： | 研究了单掺粉煤灰、双掺石灰粉和粉煤灰在不同介质下(淡水、海水、硫酸盐溶液)对再生混凝土抗冻性能的影响,试验结果表明:单掺粉煤灰掺量为20%或双掺石灰粉和粉煤灰比例为3∶7时,可明显提高再生混凝土的抗冻性能,不同介质溶液下抗冻性能最好的为淡水、最差的为海水。同时得出在不同掺量的粉煤灰、不同掺量的石灰粉和粉煤灰与再生混凝土抗冻性相关关系及其变化规律,可供理论研究和工程应用参考。
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| 关 键 词： | 再生混凝土 粉煤灰 石灰粉 氯离子渗透 冻融循环 |
Study on the influence of mineral admixtures on frost resistance of recycled concrete |
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| YIN Xing-wei
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WU Xiang-hao.Study on the influence of mineral admixtures on frost resistance of recycled concrete[J].Concrete,2012(8):90-93. |
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| Authors: | YIN Xing-wei WU Xiang-hao |
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| Affiliation: | (College of Ocean and Environment Engineering,Shanghai Maritime University,Shanghai 201306,China) |
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| Abstract: | The influence of fly ash and lime dust as cement replacement on frost resistance of recycled concrete in different medium such as fresh water,sea water and sulfate solution are investigated.The experimental results indicate that adding 20% fly ash to recycled concrete can improve its frost resistance,and frost resistance of recycled concrete mixed with fly ash and lime dust by 3∶7 also can be improved.Frost resistance of recycled concrete is highest in fresh water and lowest in sea water.Meanwhile,it shows the effect of the frost resistance of recycled concrete with different amount of fly ash and lime dust which can provide for theory study and engineering application. |
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| Keywords: | recycled concrete fly ash lime dust chloride penetration freeze-thawing cycle |
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