Effect of water absorbent polymer on properties of soil substrate used on high and steep rocky slope
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Abstract
In order to improve the consolidation, permeability and organic nutrients of the soil substrate used on steep rocky slope, the properties of soil substrate added with cement, wood slashings, rice straw and peaty soil were studied. The results showed that the pH value and rigidity were increased and the maximum waterholding capacity of substrate decreased (P0.05) after the cement was added. However, the proportion of cement could be over 2% if the pH adjusting solution was used. The waterholding capacity was increased by adding wood slashings and peaty soil, meanwhile, the rigidity could be reduced (P0.05). The rice straw (2 mm in diameter) was not a proper additive material because it could make the substrate too loose and reduce the resistance to erosion. The maximum proportion of each additive component was determined as well.
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