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Light powder geosynthetic clay liner

A technology of bentonite waterproof blanket and bentonite, which is applied in the field of building waterproof materials, can solve the problems of large area and quality, inconvenient construction, etc., and achieve the effects of excellent waterproof performance, convenient construction, and saving transportation costs

Active Publication Date: 2013-06-26
中国非金属矿工业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of large mass per unit area and inconvenient transportation and construction of ordinary bentonite waterproof blankets, a new idea is proposed, which is characterized in that the bentonite particles of ordinary bentonite waterproof blankets are replaced by bentonite composite superabsorbent material powder, providing a lightweight Quality powdery bentonite waterproof blanket

Method used

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  • Light powder geosynthetic clay liner

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Experimental program
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Effect test

Embodiment 1

[0029] Such as figure 1 As shown, a light-weight powdery bentonite waterproof blanket includes a face cloth 1 and a base cloth 3, and between the face cloth 1 and the base cloth 2 is fixed a bentonite composite superabsorbent material powder through a needle punching process. The face cloth 1 used is a non-woven fabric, and the base cloth 3 used is a woven cloth.

[0030] The preparation method of the bentonite composite superabsorbent material powder comprises the following steps:

[0031] (1) Take 10 parts by weight of 200 mesh sodium bentonite powder, add distilled water according to the weight ratio of 1:2, and stir thoroughly;

[0032] (2) Add 10 parts by weight of 40% acrylamide aqueous solution, stir and mix thoroughly, then add 0.002 parts by weight of N,N-methylenebisacrylamide, 0.05 parts by weight of ammonium persulfate, and 0.5 parts by weight of Sodium hydroxide, the sodium thiosulfate of 0.15 parts by weight are fully stirred and mixed;

[0033] (3) Polymerize...

Embodiment 2

[0038] Such as figure 1 As shown, a light-weight powdery bentonite waterproof blanket includes a face cloth 1 and a base cloth 3, and between the face cloth 1 and the base cloth 2, there is bentonite composite superabsorbent material powder fixed through a needle punching process. The face cloth 1 used is a non-woven fabric, and the base cloth 3 used is a woven cloth.

[0039] The preparation method of the bentonite composite superabsorbent material powder comprises the following steps:

[0040] (1) Take 8 parts by weight of 200-mesh high-purity natural sodium-based bentonite, add distilled water according to the weight ratio of 1:2, and stir thoroughly. After drying and crushing, pass through a 50-100-mesh sieve and then purify to make the montmorillonite content higher than 80%, and then dry and crush until 90% pass through a 200-mesh standard sieve;

[0041] (2) Add 8 parts by weight of 40% acrylamide aqueous solution, stir and mix thoroughly, then add 0.001 parts by weig...

Embodiment 3

[0047] Such as figure 1 As shown, a light-weight powdery bentonite waterproof blanket includes a face cloth 1 and a base cloth 3, and between the face cloth 1 and the base cloth 2 is fixed a bentonite composite superabsorbent material powder through a needle punching process. The face cloth 1 used is a non-woven fabric, and the base cloth 3 used is a woven cloth.

[0048] The preparation method of the bentonite composite superabsorbent material powder comprises the following steps:

[0049] (1) Take 12 parts by weight of 200-mesh high-purity natural sodium-based bentonite, add distilled water according to the weight ratio of 1:2, and after fully stirring, the preparation method of the high-purity natural sodium-based bentonite: prepare natural sodium-based bentonite ore After drying and crushing, pass through a 50-100 mesh sieve and then purify to make the montmorillonite content higher than 80%, and then dry and crush until 90% pass through a 200 mesh standard sieve;

[005...

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Abstract

The invention relates to a light powder geosynthetic clay liner. The geosynthetic clay liner comprises a face cloth and a bottom cloth, wherein a geosynthetic compound high water absorbing material is arranged between the face cloth and the bottom cloth; and the geosynthetic compound high water absorbing material has the following indexes: the granularity is 80 meshes, the passing rate is more than 90%, the expansion index is greater than or equal to 40mL / 2g, the durability is greater than or equal to 20mL / 2g, the filter loss is less than or equal to 15mL, and the unit area quality is 2000g / m2. Compared with the common geosynthetic clay liner, the manufactured geosynthetic clay liner provided by the invention can rapidly expand when encountering water in use, the water absorption rate is high, the water absorbing capacity is large, the light powder geosynthetic clay liner has the good water-proofing and seepage-proofing properties, the unit area quality is reduced, the construction is convenient, and the transportation is also convenient.

Description

technical field [0001] The patent of the invention relates to a waterproof material for construction, in particular to a lightweight powdery bentonite waterproof blanket used in construction and civil engineering. Background technique [0002] Bentonite waterproof blanket is a new type of geosynthetic material. Ordinary bentonite waterproof blanket is made by fixing the bentonite particle layer evenly and firmly between the non-woven fabric layer and the woven fabric layer through special technology and equipment. The bottom layer is woven fabric and the upper layer is non-woven fabric. And it has good self-healing properties and freeze-thaw resistance. The waterproof material is widely used, and can be used in underground waterproof and anti-seepage fields such as subways, water conservancy projects, garden waterscape projects, landfills, and civil buildings. [0003] Sodium-based bentonite has good expansibility and good dispersibility in water medium. When in contact wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B9/04C08L33/26C08K9/00C08K3/34C08F220/56
Inventor 舒锋胡勤章少华廖青中王志强刘玉芹李根旭
Owner 中国非金属矿工业有限公司
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