Pre-paved expansive self-enclosed particulate matter for waterproof roll and preparation method of particulate matter

A technology for waterproofing membranes and particulate matter, applied in the field of building waterproofing materials, can solve the problems of building waterproofing failure, building leakage, etc., and achieve the effects of short construction period, preventing penetration and ensuring performance.

Active Publication Date: 2017-08-04
浙江鲁班建材科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to water channeling and the existence of cracks, the

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] 1) Fully stir and mix 55 parts of sodium bentonite and 25 parts of powdery superabsorbent polymer, and first roll and mix on the granulator; dissolve 2 parts of polyvinyl alcohol in water to form a solution with a content of polyvinyl alcohol of 20% , spray on the rolling powder, and start heating and drying, adjust the spraying speed and the speed of the granulator to control the size of the particles, so that the diameter of the obtained particles is about 1mm, screen and classify, and re-granulate if the particles are too small;

[0037] 2) Dissolve 3 parts of alkali-soluble polymer and 2 parts of rubber in 13 parts of organic solvent and stir thoroughly until all the raw materials are dissolved, and use it as a coating solution for particles;

[0038] 3) Use the fluidized bed spray coating method to use the coating liquid as the wall material, and wrap the particles made by the granulator to form capsule-shaped particles, and use 10% sodium hydroxide solution to chec...

Embodiment 2

[0041] 1) Fully stir and mix 35 parts of sodium bentonite and 40 parts of powdery superabsorbent polymer, and roll and mix on the granulator first; dissolve 2 parts of polyvinyl alcohol in water to form a solution with a content of polyvinyl alcohol of 20% , spray on the rolling powder, and start heating and drying, adjust the spraying speed and the speed of the granulator to control the size of the particles, control the particle diameter to about 1mm, screen and classify, and re-granulate if the particles are too small;

[0042] 2) Dissolve 5 parts of alkali-soluble polymer and 3 parts of rubber in 15 parts of organic solvent and stir thoroughly until the raw materials are completely dissolved; use it as a coating solution for particles;

[0043] 3) Use the fluidized bed spray coating method to use the coating liquid as the wall material, and wrap the particles made by the granulator to form capsule-shaped particles. And use 10% sodium hydroxide solution to check the wrappin...

Embodiment 3

[0046] 1) Fully stir and mix 65 parts of sodium bentonite and 20 parts of powdery superabsorbent polymer, and first roll and mix on the granulator; dissolve 2 parts of polyvinyl alcohol in water to form a solution with a content of 20% polyvinyl alcohol , spray on the rolling powder, and start heating and drying, adjust the spraying speed and the speed of the granulator to control the size of the particles, control the particle diameter to about 1mm, screen and classify, and re-granulate if the particles are too small;

[0047]2) Dissolve 3 parts of alkali-soluble polymer and 2 parts of rubber in 8 parts of organic solvent and stir thoroughly until the raw materials are completely dissolved; use it as a coating solution for particles;

[0048] 3) Use the fluidized bed spray coating method to use the coating liquid as the wall material, and wrap the particles made by the granulator to form capsule-shaped particles. And use 10% sodium hydroxide solution to check the wrapping rat...

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Abstract

The invention discloses a pre-paved expansive self-enclosed particulate matter for a waterproof roll and a preparation method of the particulate matter. The particulate matter is prepared by the following steps: uniformly mixing sodium bentonite and a high water-absorbing polymer so as to obtain a mixture; and adhering and granulating the mixture with a polyvinyl alcohol aqueous solution, and coating by using an alkaline soluble polymer, rubber and an organic solvent, thereby obtaining the particulate matter. The particles in delayed high expansion are adopted after concrete grouting and curing; because materials in the cement can separate out the calcium hydroxide component, the cement is partially alkalized, and the coating material on the particle surface is swelling and permeable, so that the particles are rapidly expanded, the gap between the roll and the concrete is filled, waterproof colloid is formed, the lower surface of the concrete is completely enclosed, infiltration of underground water is avoided, and an effect of completely preventing water is achieved; and moreover, the waterproof roll is short in construction period and can remain a certain strength when meeting water, the performance of the material is guaranteed, and the problem that the basement pre-paved roll is complicated and difficult to seal is solved.

Description

technical field [0001] The invention belongs to the technical field of building waterproof materials, and specifically relates to a pre-paved expansion self-sealing waterproof membrane particle that can self-volume expand and seal the gap between the membrane and concrete after encountering water, and prevent structural leakage, and a preparation method thereof . Background technique [0002] In the waterproofing of the bottom plate of underground structures, pre-paved anti-adhesive or sand surface waterproofing membranes are currently used as pre-paved materials to be poured and pounded on top of the concrete. Attached to the concrete structure to form a good waterproof layer. Although there are some problems in the difficulty of paving, it is very popular in engineering and is more popular in engineering projects. [0003] However, due to the complexity of the building structure and the difference in deformation, the shrinkage of the large-structure concrete is very larg...

Claims

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Application Information

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IPC IPC(8): C04B26/04C04B41/48C04B111/27
CPCC04B26/04C04B41/48C04B2111/27C04B14/104C04B2103/0051C04B41/463
Inventor 项晓睿周振哲王彬胡强魏红超
Owner 浙江鲁班建材科技股份有限公司
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