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Cation polyacrylamide swelled ground modifying agent

A polyacrylamide and cationic technology, which is applied in the direction of soil conditioning materials, organic fertilizers, fertilizer mixtures, etc., can solve the problems of natural expansive soil expansion, shrinkage, deformation and damage, and achieve the effects of reducing permeability, increasing runoff, and maintaining stability

Inactive Publication Date: 2007-08-08
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can effectively solve the problem of expansion, contraction, deformation and damage of natural expansive soil

Method used

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Examples

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Embodiment Construction

[0009] Example, preparation of modifier to prepare 1000ml of modifier. The process steps for improving agent preparation are as follows: (1) The mass of dry soil to be improved is 998g, and the required cations are weighed at 0.2% by mass (mass of cationic polyacrylamide: mass of dry soil = 0.2:99.8). Type polyacrylamide (CPAM) 2.0g. (2) Add the cationic polyacrylamide into the water while stirring, and add it as slowly as possible to prevent the formation of lumps. (Note: When preparing the aqueous solution of the product, it should be carried out in enamel, galvanized, aluminum or plastic barrels, and cannot be prepared or stored in iron containers.)

[0010] The steps of the improved construction method are: spray the prepared improver on the surface of the dry slope, spray the second time after the surface of the slope is dry, and then spray the third time after the surface of the slope is dry, and repeat the spraying for several times. Until the surface improvement laye...

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PUM

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Abstract

The invention discloses a cationic polyacrylamide swelled ground modifier and constructing method, which is characterized by the following: weighing 0.2% modifier into dried soil with saturation less than 95%; stirring; dispersing cationic polyacrylamide in the water evenly without knob; reducing the thickness of adsorbing water film on the clay particle surface; reinforcing the stability of soil mass.

Description

technical field [0001] The invention relates to an expansive soil improver, in particular to a cationic polyacrylamide expansive soil improver for reducing the expansion and shrinkage of expansive soil and an improved construction method thereof. It belongs to the technical field of geotechnical engineering. Background technique [0002] There are two types of methods to reduce the expansion and contraction of expansive soil and increase the stability of expansive soil foundation and slope: physical method and chemical method. [0003] Described physical methods: (1) surface water protection: various drainage ditches are set up, and a surface drainage network system is established, so that surface water is not easy to infiltrate into the soil; (2) slope protection, the main reinforcement measures at present are vegetation protection, Skeleton protection, rubble slope protection and fully enclosed slope protection, etc.; (3) Support and reinforcement protection: commonly use...

Claims

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Application Information

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IPC IPC(8): C09K17/18C09K103/00
Inventor 王保田任骜张海霞张文慧李守德张福海
Owner HOHAI UNIV
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