| 污泥和废物焚烧炉渣制备受控低强度回填材料的特性评估(英文) |
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| 引用本文： | 甄广印,周海燕,赵天涛,赵由才.污泥和废物焚烧炉渣制备受控低强度回填材料的特性评估(英文)[J].中国化学工程学报,2012,20(1):80-88. |
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| 作者姓名： | 甄广印 周海燕 赵天涛 赵由才 |
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| 作者单位： | 1. The State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engi-neering, Tongji University, Shanghai 200092, China;2. Shanghai Laogang Waste Treatment Company, Shanghai 201302, China |
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| 基金项目： | Supported by the Science and Technology Commission of Shanghai Municipality (08 DZ 1202802,09 DZ 1204105,09 DZ2251700);the National Natural Science Foundation of China (51008322) |
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| 摘 要： | This research evaluated the use of sewage sludge and refuse incineration bottom ash to replace calcium sulfoaluminate cement(CS(_)A) in making controlled low-strength material(CLSM).Various properties of CLSM mixtures were characterized in terms of unconfined compressive strength,microstructure and leachability.It was found that the strength of tested CLSM mixtures ranged from 3.6 to 9.0 MPa,over the upper excavatable limit of 2.1 MPa.The micro-structural analysis revealed that sewage sludge and bottom ash were crystallochemically in-corporated within CLSM systems by forming the needle-like ettringite(C3A?3CS(_)?H32) with exiguous tubers via the typical Pozzolanic Reaction,leading to a dense and low-porosity microstructure.Furthermore,the toxicity charac-teristic leaching procedure evidenced that the cumulative leachable metals in the leachate were much below the regulatory thresholds.The potential for using sewage sludge and bottom ash in CLSM making was thus confirmed.
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| 关 键 词： | dewatered sludge refuse incineration bottom ash controlled low-strength material solidification/stabilization leachability |
| 收稿时间： | 2011-07-01 |
Performance Appraisal of Controlled Low-strength Material Using Sewage Sludge and Refuse Incineration Bottom Ash |
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| ZHEN Guangyin,ZHOU Haiyan,ZHAO Tiantao,and ZHAO Youcai.Performance Appraisal of Controlled Low-strength Material Using Sewage Sludge and Refuse Incineration Bottom Ash[J].Chinese Journal of Chemical Engineering,2012,20(1):80-88. |
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| Authors: | ZHEN Guangyin ZHOU Haiyan ZHAO Tiantao and ZHAO Youcai |
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| Affiliation: | 1. The State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engi-neering, Tongji University, Shanghai 200092, China;2. Shanghai Laogang Waste Treatment Company, Shanghai 201302, China |
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| Abstract: | This research evaluated the use of sewage sludge and refuse incineration bottom ash to replace calcium sulfoaluminate cement(CSA) in making controlled low-strength material(CLSM).Various properties of CLSM mixtures were characterized in terms of unconfined compressive strength,microstructure and leachability.It was found that the strength of tested CLSM mixtures ranged from 3.6 to 9.0 MPa,over the upper excavatable limit of 2.1 MPa.The micro-structural analysis revealed that sewage sludge and bottom ash were crystallochemically incorporated within CLSM systems by forming the needle-like ettringite(C3A·3CS·H32) with exiguous tubers via the typical Pozzolanic Reaction,leading to a dense and low-porosity microstructure.Furthermore,the toxicity characteristic leaching procedure evidenced that the cumulative leachable metals in the leachate were much below the regulatory thresholds.The potential for using sewage sludge and bottom ash in CLSM making was thus confirmed. |
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| Keywords: | dewatered sludge refuse incineration bottom ash controlled low-strength material solidifica-tion/stabilization leachability |
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