Green ultralight crack-resistant polyvinyl alcohol substrate and preparation method thereof

Abstract

The invention relates to the technical field of ecological slope protection substrates, and specifically discloses a green ultralight crack-resistant polyvinyl alcohol substrate and a preparation method thereof. The preparation method comprises the following steps: (1) weighing raw material soil, and carrying out drying and sieving for subsequent usage; (2) adding a curing agent into sieved raw material soil, and carrying out uniform mixing; (3) adding water into a mixture obtained in the step (2), and carrying out uniform mixing under stirring; and (4) adding polyvinyl alcohol powder, polyvinyl alcohol fiber, a gelling agent, a filling material, an anti-foaming agent, a wetting agent, a preservative and a pigment into a mixture obtained in the step (3) according to certain addition amounts, and carrying out uniform mixing under stirring. The lightweight material provided by the invention guarantees the strength of a composite soil body to meet the ecological protection requirements of a slope, has the advantages of cracking resistance, impermeability, erosion resistance, ultralight weight, beautiful appearance and the like at the same time, reduces the load of a slope surface, can prevent slope protection plants from dying due to soil loss, provides a green element to the slope surface before vegetation germination, avoids visual fatigue caused by a dark substrate, and enables the slope surface to achieve a landscape effect.

Description

technical field [0001] The invention relates to the technical field of ecological slope protection base materials, in particular to a crack-resistant polyvinyl alcohol green ultra-light base material and a preparation method thereof. Background technique [0002] Under the condition of sunlight and wind blowing, the vegetation slope protection substrate does not have enough time to form tensile strength to resist the capillary shrinkage force caused by rapid evaporation, which is prone to plastic shrinkage and cracking, which reduces the crack resistance and impermeability of the substrate and durability; moreover, the base material is subjected to rain erosion, which leads to increasingly serious soil erosion and a decline in the survival rate of vegetation, which weakens the erosion resistance of the base material; in addition, the traditional ecological slope protection base material mainly based on cement Large, which increases the load on the slope surface and increases...

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Problems solved by technology

[0002] Under the condition of sunlight and wind blowing, the vegetation slope protection substrate does not have enough time to form tensile strength to resist the capillary shrinkage force caused by rapid evaporation, which is prone to plastic shrinkage and cracking, which reduces the crack resistance and impermeability of the substrate and durability; moreover, the base material is subjected to rain erosion, which leads to increasingly serious soil erosion and a decline in the survival rate of vegetation, which weakens the erosion resistance of the base material; in addition, the traditional ecological slope protection base material mainly based on cement Large, which increases the load on the slope surface and adds hidden dangers to the stability of the slope; moreover, the traditional ecological slope protection base material is dark in color, and the slope surface is prone to visual fatigue before the vegetation germinates, which affects its external landscape

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