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Modified Loess, Preparation Method Therefor and Application Thereof
The present invention relates to the technical field of less material modification. Disclosed are a modified less, a preparation method therefor and an application thereof. A modified less is prepared from a modified silica sol, comprising the following specific steps: spraying a nano-silica solution evenly in a loess, continuing to spray water to make the water content of the less reach 15-17%, sealing with film, storing in a dry and cool place for 2-3 days, stirring and mixing, and then curing for 3 5 days to obtain a modified less. The method of the present invention can improve the specific surface area of the less, reduce the number of pores of the less and the permeability coefficient, and thus can be used to prepare an anti-seepage liner for a landfill. Therefore, the method of the present invention realizes the full utilization of less resources, saves the construction cost of landfills and reduces the pollution of groundwater by waste leachate. FIGURES OF THE SPECIFICATION (a) (b) (C) Fig. 1 io000 -240 j--Fine pore -- Mesopore Macropor 200 U)U 4--U z 80 z 5000 8 Loess Nano-silica sol modified less Fig. 2
Modified Loess, Preparation Method Therefor and Application Thereof
The present invention relates to the technical field of less material modification. Disclosed are a modified less, a preparation method therefor and an application thereof. A modified less is prepared from a modified silica sol, comprising the following specific steps: spraying a nano-silica solution evenly in a loess, continuing to spray water to make the water content of the less reach 15-17%, sealing with film, storing in a dry and cool place for 2-3 days, stirring and mixing, and then curing for 3 5 days to obtain a modified less. The method of the present invention can improve the specific surface area of the less, reduce the number of pores of the less and the permeability coefficient, and thus can be used to prepare an anti-seepage liner for a landfill. Therefore, the method of the present invention realizes the full utilization of less resources, saves the construction cost of landfills and reduces the pollution of groundwater by waste leachate. FIGURES OF THE SPECIFICATION (a) (b) (C) Fig. 1 io000 -240 j--Fine pore -- Mesopore Macropor 200 U)U 4--U z 80 z 5000 8 Loess Nano-silica sol modified less Fig. 2
Modified Loess, Preparation Method Therefor and Application Thereof
ZHANG YONGBO (author) / GOU LINA (author) / GUANG XIPING (author) / SHI HONG (author)
2021-06-10
Patent
Electronic Resource
English
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