Polyvinyl alcohol water solution expansive soil modifier, preparation method and application thereof
A technology of polyvinyl alcohol and soil improver, which is applied in the field of expansive soil improver and polyvinyl alcohol aqueous solution expandable soil improver, which can solve the problems of complex construction, incomplete test results, and high price, and achieve good penetration effect
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[0025] Embodiment: Utilize polyvinyl alcohol aqueous solution improver to the test of expansive soil improvement:
[0026] The improvement construction steps are: (1) Take a 200kg expansive soil sample from Huai'an City, Jiangsu Province, put it in a cylindrical glass vessel with a height of 1m and a diameter of 30cm, and take out the soil sample at a depth of 90cm from the surface 100 grams, crushed and passed through a 0.55 sieve; mix the sieved sample evenly, bake at 105°C-110°C to constant weight, and cool to room temperature in a desiccator; put the neckless funnel on the bracket, under the funnel Keep the mouth at a distance of 10mm from the soil measuring cup; take the sample with a spoon and pour it into the funnel, stirring while pouring. When the sample fills the soil measuring cup and starts to flow out, stop pouring the soil, remove the funnel to scrape off excess soil from the mouth of the cup and weigh it. Repeat the above operations for the second soil measurem...
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