| 钢渣安定性评价方法的比较 |
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| 引用本文： | 韩檬,张亮亮,卢忠飞,孙健.钢渣安定性评价方法的比较[J].环境工程,2022,40(2):235-239. |
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| 作者姓名： | 韩檬 张亮亮 卢忠飞 孙健 |
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| 作者单位： | 1. 钢铁工业环境保护国家重点实验室, 北京 100088; |
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| 摘 要： | 转炉钢渣遇水膨胀带来的安定性问题是制约钢渣在筑路和建材方面大规模应用的主要原因.分析了造成我国转炉钢渣体积安定性不良的主要原因,从5个方面对比分析了各评价方法的优缺点:f-CaO含量测定可作为辅助手段快速评价钢渣中主要膨胀性矿物含量;压蒸粉化率适合评价f-CaO和方镁石引起的膨胀粉化;砂浆棒线性膨胀率还需进一步完善试验...
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| 关 键 词： | 钢渣 安定性 评价方法 压蒸 |
| 收稿时间： | 2020-12-07 |
COMPARATIVE ANALYSIS OF EVALUATION METHODS FOR STEEL SLAG SOUNDNESS |
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| Affiliation: | 1. State Key Laboratory of Iron and Steel Industry Environmental Protection, Beijing 100088, China;2. Central Research Institute of Building and Construction Co., Ltd, MCC Group, Beijing 100088, China |
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| Abstract: | The soundness problem caused by the expansion of converter slag is the main reason restricting the large-scale application of converter slag in road construction and building materials. This paper analyzed main reasons of the poor soundness of converter slag in China, and compared the advantages and disadvantages of each evaluation method from five aspects: f-CaO content determination could be used as an auxiliary mean to evaluate the content of main expansive minerals in steel slag quickly; the autoclaved pulverization rate was suitable to evaluate the expansion caused by f-CaO and periclase; the linear expansion rate method of mortar bar needed to be further improved; the soundness of steel slag used in road construction could be effectively tested by 10 days dimmersion expansion rate in of compacted specimens; autoclave method is too severe to test the soundness of the concrete with steel slag aggregate. Combing these five evaluation methods can provide reference for the soundness quality control and research of steel slag as aggregate. |
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