Effects of Municipal Solid Waste on Planting Properties and Scouring Resistance of Vegetation Concrete (Wuhan, China)

Liulin Kong, Xiaomei Wang, Wencheng Guo and Yongcheng Zhang
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Liulin Kong: Faculty of Engineering, China University of Geosciences, Wuhan 430070, China
Xiaomei Wang: Faculty of Engineering, China University of Geosciences, Wuhan 430070, China
Wencheng Guo: China Academy of Building Research Institute, Beijing 100029, China
Yongcheng Zhang: Department of Engineering Management, Huaiyin Institute of Technology, Huaian 223003, China

IJERPH, 2022, vol. 19, issue 13, 1-19

Abstract: Vegetation concrete (VC) laid as a reinforcement base and covered by a soil layer with vegetation has been increasingly used to beautify the landscape, reduce environmental pollution and control stormwater runoff. In this study, the effects of municipal solid waste (MSW) on vegetation characteristics of modified VC were tested under different mix compositions. We first explored the effects of the mixed concrete environment on Festuca elata and perennial Ryegrass for 60 days. Then, the influence of various MSW contents added to different percentages of cement on scouring resistance of VC was examined. The experimental results revealed that the germination rates and plant heights of both species decreased with the increase in concrete content. Considering the scouring resistances, the optimal mix proportion of MSW-modified VC was recommended as No. 25, with 5% KW fertilizer, 8% cement and 0.5% wheat straw in this study. Furthermore, adding a small amount of fallen leaves or silica fume to VC can promote the growth of both species to some extent, although these additions had an inverse effect on the scouring resistances. The results contribute to beneficial knowledge for future research on the feasibility of the use these species with VC technology for slope ecological restoration.

Keywords: municipal solid waste; vegetation concrete; seed germination; plant height; scouring resistance (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2022
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