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A soil improver

A technique for improving slag and surfactants, applied in the field of slag improving agents

Active Publication Date: 2020-07-21
山东宏禹工程科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the above-mentioned shortcoming of prior art, the object of the present invention is to provide a kind of slag soil improvement agent, be used for solving the fluidity of the sand egg stratum that comprises relatively large particle, discharge mud and inhibit the microbial degradation of material in soil question

Method used

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Examples

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preparation example Construction

[0032] The second aspect of the present invention provides a method for preparing the aforementioned dregs modifier, comprising: mixing polyacrylamide, nonionic cellulose ether and inorganic base with water, and then adding a sulfonic acid surfactant.

[0033] More specifically, mix polyacrylamide, non-ionic cellulose ether and inorganic alkali solid; stir water in a stirring tank at a speed of 1000-1200 rpm; mix the mixed non-ionic cellulose ether and inorganic alkali very slowly and continuously Add water, stir for at least 20 minutes, then add sulfonic acid surfactant, stir for at least 5 minutes, until the solids are completely dissolved; let stand for 90 minutes to complete the preparation.

[0034] The third aspect of the present invention provides the use of the aforementioned slag soil modifier in the construction of sand and pebble formations.

[0035] The purpose of muck improvement is that the soil is in a plastic flow state with certain viscosity, fluidity and impe...

Embodiment 1

[0039] Mix the polyacrylamide of mass fraction 8.1%, the hydroxyethyl cellulose of 32.3% and the magnesium hydroxide solid of 40.3%; Prepare water according to the ratio of mass ratio polyacrylamide: water=1:250, mix water Stir in the tank at a speed of 1000-1200rpm; add the mixed hydroxyethyl cellulose and magnesium hydroxide to the water very slowly and continuously, stir for at least 20 minutes, then add 19.4% naphthalenesulfonic acid formaldehyde condensate, stir for at least 5 minutes, until solid Completely dissolved; stand for 90min to complete the preparation.

Embodiment 2

[0041]Mix the polyacrylamide of mass fraction 5.8%, the hydroxyethyl cellulose of 23.3% and the magnesium hydroxide solid of 29.1%; Prepare water according to the ratio of mass ratio acrylamide: water=1:250, put water in stirring tank Stir at a speed of 1000-1200rpm; add the mixed hydroxyethyl cellulose and magnesium hydroxide to the water very slowly and continuously, stir for at least 20min, then add 41.9% naphthalenesulfonic acid formaldehyde condensate, stir for at least 5min, until the solid is completely Dissolve; stand for 90min to complete the preparation.

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Abstract

The invention relates to the field of construction additives, and in particular relates to a conditioning agent for residue soil. The conditioning agent for the residue soil comprises the following raw materials: a solid material and a liquid material; and the solid material comprises the following components, in percentages by weight, 1.4%-18.0% of polyacrylamide, 5.7%-72.1% of nonionic celluloseether, 9%-21.4% of an inorganic base, and 0.9%-71.4% of a sulfonic acid surfactant. The conditioning agent provided by the invention solves the problems of fluidity, soil discharge and degradation bymicroorganisms in soil of a sandy gravel stratum containing relatively large particles.

Description

technical field [0001] The invention relates to the field of construction additives, in particular to a dreg improvement agent. Background technique [0002] The shield method is a fully mechanized construction method in the underground excavation method. It propels the shield machine in the ground, and supports the surrounding rock through the shield casing and segments to prevent collapse into the tunnel. At the same time, a cutting device is used to excavate the soil in front of the excavation face, transported out of the hole by excavation machinery, jacked in the rear by a jack, and assembled with prefabricated concrete segments to form a mechanized construction method of the tunnel structure. [0003] At present, the type of shield machine used in my country is mainly the earth pressure balance shield machine. Its principle is to keep the passive earth pressure in the cutting ring of the excavation face and the active earth pressure outside the cutterhead of the excav...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K17/40C09K103/00
CPCC09K17/40C09K2103/00
Inventor 李树忱梁忠南王涛段壮李阳王鹏程周慧颖支斌赵世森王曼灵
Owner 山东宏禹工程科技有限公司
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