Wasteyard impermeable material based on polyvinyl alcohol- aluminum chloride combined modification and preparation method thereof
A technology of polyvinyl alcohol and aluminum chloride, which is applied in the field of underground engineering, can solve the problems of inconvenient construction on site, high retardation rate, poor fluidity of anti-seepage slurry, etc., and achieve suitable and good compressive strength and elastic modulus. Durable stability, excellent performance indicators
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Embodiment 1
[0029] A kind of landfill anti-seepage slurry material based on polyvinyl alcohol and aluminum chloride co-modification of the present embodiment, each agent component and content are (unit kg / m 3 ): cement 200, bentonite 200, fly ash 170, polyvinyl alcohol 2.0, aluminum chloride 1.5, polycarboxylate high performance water reducer 0.5, soda ash 2.5, water 880.
[0030] The preparation method is as follows:
[0031] ①Take 2.5kg of soda ash, pour it into a container with 50kg of water and dissolve it at room temperature;
[0032] ②Take 2.0kg of polyvinyl alcohol (type 1788) and put it into the above-mentioned soda ash solution for pre-hydration soaking at room temperature, and disperse polyvinyl alcohol into the soda ash solution while stirring. After stirring for 15min to 30min, let it stand More than 6 hours for use;
[0033] ③Take 1.5kg of aluminum chloride, pour it into a container with 15kg of water to dissolve it at room temperature, and let it stand for more than 2 hour...
Embodiment 2
[0038] A kind of landfill anti-seepage slurry material based on polyvinyl alcohol and aluminum chloride co-modification of the present embodiment, each agent component and content are (unit kg / m 3 ): cement 180, bentonite 220, polyvinyl alcohol 1.0, aluminum chloride 2.0, fly ash 160, polycarboxylate high performance water reducer 0.3, soda ash 3.5, water 865.
[0039] The preparation method is as follows:
[0040] ① Take 3.5kg of soda ash and pour it into a container with 50kg of water for dissolution at room temperature;
[0041] ②Take 1.0kg of polyvinyl alcohol (type 2788) and put it into the above-mentioned soda ash solution for pre-hydration soaking at room temperature, and disperse polyvinyl alcohol into the soda ash solution while stirring. After stirring for 15min to 30min, let it stand More than 6 hours for use;
[0042] ③Take 2.0kg of aluminum chloride, pour it into a container with 15kg of water to dissolve at room temperature, and let it stand for more than 2 hou...
Embodiment 3
[0047] A kind of landfill anti-seepage slurry material based on polyvinyl alcohol and aluminum chloride co-modification of the present embodiment, each agent component and content are (unit kg / m 3 ): cement 220, bentonite 180, polyvinyl alcohol 3.0, aluminum chloride 1.0, fly ash 180, polycarboxylate high performance water reducer 0.7, soda ash 1.5, water 892.
[0048] The preparation method is as follows:
[0049] ① Take 1.5kg of soda ash and pour it into a container with 50kg of water for dissolution at room temperature;
[0050] ②Take 3.0kg of polyvinyl alcohol (type 1788) and put it into the above-mentioned soda ash solution for pre-hydration soaking at room temperature, and disperse polyvinyl alcohol into the soda ash solution while stirring. After stirring for 15min to 30min, let it stand More than 6 hours for use;
[0051] ③Take 1.0kg of aluminum chloride, pour it into a container with 15kg of water to dissolve it at room temperature, and let it stand for more than 2 ...
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