| 粉煤灰掺量对集料碱硅酸反应的试验研究 |
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| 引用本文： | 王威,刘连新,赵宣. 粉煤灰掺量对集料碱硅酸反应的试验研究[J]. 混凝土, 2019, 0(3): 74-77 |
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| 作者姓名： | 王威 刘连新 赵宣 |
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| 作者单位： | 青海大学 土木工程学院,青海 西宁,810016;青海大学 土木工程学院,青海 西宁,810016;青海大学 土木工程学院,青海 西宁,810016 |
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| 基金项目： | 江苏省科技计划;国家自然科学基金 |
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| 摘 要： | 为了评价不同掺量的粉煤灰对集料种类的碱硅酸反应(ASR)膨胀的抑制效果,以快速砂浆棒法和岩相法为基础,通过室外调研选取了青海西宁地区4种潜在活性集料为样品进行抑制措施。结果表明:粉煤灰对不同集料的抑制效果与集料的活性有关。结合SEM观察,论述了粉煤灰抑制集料膨胀的机理。
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| 关 键 词： | 碱硅酸反应 粉煤灰 膨胀率 |
Experimental study on inhibition of fly ash alkali aggregate reaction |
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| WANG Wei,LIU Lianxin,ZHAO Xuan. Experimental study on inhibition of fly ash alkali aggregate reaction[J]. Concrete, 2019, 0(3): 74-77 |
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| Authors: | WANG Wei LIU Lianxin ZHAO Xuan |
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| Affiliation: | (School of Civil Engineering,Qinghai University,Xining 810016,China) |
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| Abstract: | In order to evaluate the different content of fly ash on alkali-silica reaction type of aggregate(ASR)the inhibitory effect of expansion,it is based on the fast mortar bar method and lithofacies method.Through outdoor investigation four kinds of potential active aggregates in Xining area of Qinghai were selected as samples for inhibition.The results show that the inhibition effect of fly ash on different aggregates is related to the activity of the aggregate.Combined with SEM observation,the mechanism of fly ash to restrain aggregate expansion is discussed. |
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| Keywords: | alkali-silica reaction fly ash expansion rate |
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