Cement for lap joint of bentonite waterproof blanket and preparation method thereof

A bentonite waterproof blanket and bentonite technology, applied in the direction of adhesive, adhesive type, asphalt material binder, etc., can solve the problems affecting the waterproof and anti-seepage effect of bentonite waterproof blanket, easy to lose water, fall off, etc., to achieve good waterproof and anti- Penetration effect, durable waterproof performance, strong lap joint effect

Active Publication Date: 2018-09-25
上海仁众实业股份有限公司
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  • Summary
  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

This kind of mastic needs to be configured on site, and it needs to be used up as soon as possible, otherwise the mastic will become dry and hard and cannot be used any longer
In addition, this kind of cement is easy to lose water after being applied, resulting in cracking and falling off, which directly affects the waterproof and anti-seepage effect of bentonite waterproof blanket.

Method used

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  • Cement for lap joint of bentonite waterproof blanket and preparation method thereof
  • Cement for lap joint of bentonite waterproof blanket and preparation method thereof

Examples

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preparation example Construction

[0022] The preparation method of the bentonite waterproof blanket lap joint uses the following steps to take the raw materials of the above ratio: use 20% to 40% emulsifier to emulsify 40% to 60% of petroleum asphalt, add 15% to 18 % of sodium bentonite and 2% to 5% of plasticizer, in a reaction vessel at a high temperature of 180°C, use a high-speed shearing machine to mix at a rate of 280 rpm for 30 minutes, and after the raw materials are reacted and fused, form The semi-solid black cement is cooled and packed into a rubber bucket to seal, so that the bentonite cement of the present invention is made. When the bentonite cement of the present invention is used, it can be used just by opening the glue barrel. After the above process is adopted in the present invention, the bentonite clay has strong viscosity, which can make the overlapping of the waterproof blanket more firm. At the same time, it is also flexible and can be well combined with waterproof blankets to adapt to ...

Embodiment approach 1

[0025] refer to figure 1 , when the present invention is in use, open the seal cover of the rubber bucket, and directly apply the bentonite clay 1 to the lap joint of the waterproof blanket 2 with a scraper with a length of 20 cm and a width of 4 cm. The width of the smear is 2.5 cm on each side, and the thickness is 0.5 cm. cm, spread evenly along the joint to the end.

Embodiment approach 2

[0027] refer to figure 2 After laying the waterproof blanket, fold back the waterproof blanket 2 lapped on it by 10 cm, and at 2 cm from the edge of the waterproof blanket 2 below the overlap, use a scraper 20 cm long and 4 cm wide to directly apply the bentonite clay 1 on the edge , the width of the smear is 5 cm, the thickness is 0.5 cm, and then spread evenly along the 2 cm edge of the waterproof blanket 2 to the end, and then turn the folded waterproof blanket 2 back and directly compact and overlap.

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Abstract

The invention relates to the technical field of soil engineering materials, in particular to bentonite cement gum and a preparing method thereof. The preparing method of the cement gum for lap joint of a geosynthetic clay liner comprises the following steps that petroleum asphalt is emulsified through an emulsifying agent, then the petroleum asphalt, sodium bentonite and plasticizer are mixed through a high-speed shearing machine at the speed of 280 turns per minute for 30 minutes in a reaction vessel at the high temperature of 180 DEG C, semi-solid black cement gum is formed after the raw materials react and are fused, the semi-solid black cement gum is cooled and charged into a gum barrel to be sealed, and the bentonite cement gum is prepared. By means of the technical scheme, the prepared bentonite cement gum is high in stickness and not prone to suncrack or peeling after being smeared, and the geosynthetic clay liner has better waterproof and seepage-proof effects.

Description

technical field [0001] The invention relates to the technical field of geotechnical materials, in particular to a bentonite clay and a preparation method thereof. Background technique [0002] At present, bentonite clay waterproofing blanket joints in the industry usually use bentonite clay prepared in a certain proportion from bentonite particles and water. This kind of mastic needs to be configured on site and used up as soon as possible, otherwise the mastic will become dry and hard and cannot be used any longer. In addition, this kind of cement is easy to lose water after being applied, resulting in cracking and falling off, which directly affects the waterproof and anti-seepage effect of the bentonite waterproof blanket. Contents of the invention [0003] The purpose of the present invention is to provide a bentonite waterproof blanket lapping glue to solve the above technical problems. [0004] Another object of the present invention is to provide a method for prep...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J195/00C09J11/04
Inventor 周泌河周锦丽强全林戴巧泉谢远波
Owner 上海仁众实业股份有限公司
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