| 碱激发胶凝材料固化Pb2+及浸出毒性的试验研究 |
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| 引用本文： | 郑娟荣,刘丽娜. 碱激发胶凝材料固化Pb2+及浸出毒性的试验研究[J]. 硅酸盐通报, 2009, 28(3): 435-439 |
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| 作者姓名： | 郑娟荣 刘丽娜 |
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| 作者单位： | 郑州大学土木工程学院,郑州,450002;郑州大学土木工程学院,郑州,450002 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 本文对碱激发胶凝材料(碱-偏高岭土、碱-矿渣和碱-粉煤灰)与水-水泥体系固化Pb2+进行了试验研究,其中水-水泥体系为对比样.结果表明:与水泥相比,碱激发胶凝材料能显著降低重金属离子(Pb2+)浸出浓度,其规律性与其NH+4交换容量大小的规律性一致,与其固化体的抗压强度的大小没有相关性;水泥固化重金属离子Pb2+在养护28 d后还不断浸出,而碱激发胶凝材料固化重金属离子Pb2+在养护28 d后已稳定.
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| 关 键 词： | 碱激胶凝材料 固化重金属(Pb2+) NH4+交换容量 抗压强度 浸出毒性 |
Test Investigation on the Solidification of Heavy Metal(Pb~(2+)) by Alkali-activated Cementing Materials and Their Soaking Toxicity |
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| ZHENG Juan-rong,LIU Li-na. Test Investigation on the Solidification of Heavy Metal(Pb~(2+)) by Alkali-activated Cementing Materials and Their Soaking Toxicity[J]. Bulletin of the Chinese Ceramic Society, 2009, 28(3): 435-439 |
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| Authors: | ZHENG Juan-rong LIU Li-na |
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| Affiliation: | College of Civil Engineering;Zhengzhou University;Zhengzhou 450002;China |
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| Abstract: | Test investigation on solidification of heavy metal(Pb2+) by alkali-activated cementing materials(alkali-metakaolinite,alkali-slag,alkali-fly ash) and water-cement and their soaking toxicity were carried out in this paper,in which water-cement was as control sample.The results showed that alkali-activated cementing remarkably decreased Pb2+ leaching concentration of the solidification bodies in the light of cement,the decreasing law were identical with law of capacity of NH+4 ion exchange of the solidificat... |
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