Journal of South China University of Technology (Natural Science Edition) ›› 2006, Vol. 34 ›› Issue (12): 5-9.

• Environment Science & Technology • Previous Articles     Next Articles

Effect of Void Status in Eco-Concrete for Planting on Plant Growth

Hu Yong-you1  Hu Chun-ming1  Xie Lei1  Guo Qing-wei1  Wang Xin1  Zhang Tai-ping1  Zheng Bing-hui2   

  1. 1. School of Environmental Science and Engineering, South China Univ. of Tech. , Guangzhou 510640, Guangdong, China;2. Chinese Research Academy of Environmental Sciences, Beijing 100012, China
  • Received:2005-10-25 Online:2006-12-25 Published:2006-12-25
  • Contact: 胡勇有(1964-) ,男,教授,博士生导师,主要从事水环境与水污染控制技术方面的研究. E-mail:ppyyhu@scut. edu. cn
  • About author:胡勇有(1964-) ,男,教授,博士生导师,主要从事水环境与水污染控制技术方面的研究.
  • Supported by:

    国家“863”计划资助项目(2003AA601040) ;广东省科技厅社会发展计划项目(2006B36701004)

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Abstract:

In order to p rovide more references for the suitability determination of eco2concrete for p lanting, four kinds of eco2concreteswith different void statuseswere fabricated, in which Paspalum notatum Flugge was p lanted,and the growth of the p lantwas observed. Then, several items of the p lantwere measured, including the content of proline in the p lant, the ability of the roots in absorbing nutrition and the p roportion of active part of the roots. The results show that (1) besides the void ratio, the average aperture also exert significant influence on the suitability of the p lant; (2) the p lant growsmuch better in the eco2concrete with a larger void ratio and a bigger average aperture; and (3) Paspalum notatum Flugge grows better in the eco2concrete with a void ratio of 39. 45% and an average aperture of 6. 4mm than in the eco2concrete with a void ratio of 36% and an average aperture of 4mm.

Key words: eco-concrete, aggregate, pore size, plant growth