The consolidated soil layer (CSL) was composed of fly ash (FA) and polyacrylamide (PAM), and its property was similar to soil. The resistance to wind erosion of CSLs was studied using an indoor wind tunnel under simulated wind erosion conditions. The CSL was a mixture of FA (10% and 20%), PAM (0.05% and 0.1%) and the experimental soil (classified as a sandy soil), named as T1, T2, T3, and T4. The results showed that the threshold wind speed of the sandy soil was significantly increased due to the formation of CSL by FA and PAM, exhibiting an increasing trend with increasing addition rate of FA and PAM. The wind erosion amounts of different CSLs were all decreased when compared with that of the sandy soil. The resistance to wind erosion of the CSL consisting of 10% FA and 0.1% PAM was strongest.
Chang A C, Lund L J, Page A L, et al. Physical properties of fly ash amended soil[J]. Journal of Environmental Quality, 1997,6(3):267-270.
[9]
Muriithi Grace N, Gitari Wilson M, Petrik Leslie F, et al. Carbonation of brine impacted fractionated coal fly ash:implications for CO2 sequestration[J]. Journal of Environmental Management, 2011,92(3):655-664.
[10]
Vimal Chandra Pandey, Nandita Singh. Impact of fly ash incorporation in soil systems[J]. Agriculture, Ecosystems & Environment, 2010,136(1/2):16-27.
[11]
Skousena Jeffrey, Yang J E, Lee Jin-Soo, et al. Review of fly ash as a soil amendment[J]. Geosystem Engineering, 2013,16(3):249-256.
Watson L D. Effect of fly ash-induced textural changes on soil water retention and soil strength[D]. Edmonton (AB):University of Alberta; 1994.
[15]
Pathan S M, Aylmore A G, Colmer T D. Properties of several fly ash materials in relation to use as soil amendments[J]. Journal of Environmental Quality, 2003,32(2):687-693.
[16]
Adriano C D, Weber J T. Influence of fly ash on soil physical properties and turf grass establishment[J]. Journal of Environmental Quality, 2001,30(2):596-601.
[17]
Adriano D C, Page A L, Elseewi A A, et al. Utilizationand disposal of fly ash and other coal residues in terrestrial ecosystems:a review[J]. Journal of Environmental Quality, 1980,9(3):333-344.
[18]
Singh R P, Gupta A K, Ibrahim M A, et al. Coal fly ash utilization in agriculture:its potential benefits and risks[J]. Reviews in Environmental Science and Bio/Technology, 2010,9(4):345-358.
[19]
Sale L Y, Chanasyk D S, Naeth M A. Temporal influence of fly ash on select soil physical properties[J]. Canadian Journal of Soil Science, 1997,77(4):677-683.
[20]
Palumbo A V, Mccarthy J F, Amonette J E, et al. Prospects for enhancing carbon sequestration and reclamation of degraded lands with fossil-fuel combustion by-products[J]. Advances in Environmental Research, 2004,8(2):425-438.
Xiaoqian Yan,XunjiangZhang.Interactive effects of clay and polyacrylamide propertieson flocculation of pure and subsoil clays[J]. Soil Research, 2014,52(7):727-737.
[25]
Hu Xia, LiuLianyou, LI Shunjiang, et al. Development of soil crusts under simulated rainfall and crust formation on a loess soil as influenced by polyacrylamide[J]. Pedosphere, 2012,22(3):415-424.
He Jijun, Cai Guoqiang, Tang Zejun. Wind tunnel experimental study on the effect of PAM on soil wind erosion control[J]. Environmental Monitoring and Assessment, 2008,145(1-3):185-193.
