Water purification characteristics of pervious concrete fabricated with CSA cement and bottom ash aggregates

被引：81
作者：
Kim, G. M. [1 ]
Jang, J. G. [2 ]
Khalid, Hammad R. [1 ]
Lee, H. K. [1 ]
机构：
[1] Korea Adv Inst Sci & Technol, Dept Civil & Environm Engn, Daehak Ro 291, Daejeon 34141, South Korea
[2] Korea Inst Geosci & Mineral Resources, Gwahak Ro 124, Daejeon 34132, South Korea
来源：
CONSTRUCTION AND BUILDING MATERIALS | 2017年 / 136卷
关键词：
Pervious concrete; Water purification; Nitrogen; Phosphorous; Coal bottom ash; Calcium sulfoaluminate cement; CALCIUM SULFOALUMINATE CEMENT; POROUS CONCRETE; RECYCLED-AGGREGATE; PAVEMENT; STRENGTH; PASTE; POROSITY;
D O I：
10.1016/j.conbuildmat.2017.01.020
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
The water purification characteristics of pervious concrete fabricated with calcium sulfoaluminate cement and coal bottom ash aggregate are investigated. Reduction ratio of nitrogen and phosphorus by the pervious concrete was investigated, and the results were discussed with filtering and adsorption effects. A series of tests including a batch adsorption, BET and XRD was conducted for this purpose. The calcium sulfoaluminate cement contributed to the slightly rapid strength development of the pervious concrete, while its purification performance was similar to that of ordinary Portland cement. Suspended nitrogen and phosphorous contents were significantly reduced by the physical filtration of voids in the pervious concrete, resulting in an improvement of the turbidity. The dissolved phosphorous could be adsorbed by the formation of hydroxyapatite in both cements. (C) 2017 Elsevier Ltd. All rights reserved.
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页码：1 / 8
页数：8
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