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Soil compaction assistant and preparation method thereof

A compact and soil technology, applied in the field of civil engineering, can solve the problems of slow increase in the strength of lime soil, limited growth strength, low strength of cement soil, etc., and achieve the effects of unconfined strength improvement, shortened construction period, and good crack resistance.

Active Publication Date: 2015-07-08
NANJING HYDRAULIC RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the strength of lime soil increases slowly, and the growth strength is limited; th

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Preparation of amide polyamine copolymer: Add 153.4 parts of methacrylamide and 114.9 parts of water into a reaction kettle equipped with a stirrer, a thermometer, and a reflux condensation device, and heat to a temperature of 30°C to 35°C while stirring ;While stirring, add 120.3 parts of formaldehyde dropwise, and drop it in 1h~1.5h; 184.4 parts of triethylenetetramine and 300 parts of water are made into monomer solution, 9.6 parts of potassium persulfate, 9.4 parts of sodium bisulfite and 108 parts of water are made into Initiator solution; double drops of monomer solution and initiator solution, 2h ~ 2.5h dripping; warm up to 50 ℃ and keep warm for 2h ~ 3h; cool down to room temperature, discharge, that is, a light yellow viscous liquid.

[0027] (2) Preparation of soil compacting aid: add 330 parts of prepared amide polyamine copolymers, 80 parts of water-based epoxy resin, 135 parts of potassium silicate, 39 parts of carboxymethyl cellulose, 12 parts of polyam...

Embodiment 2

[0029] (1) Preparation of amidopolyamine copolymer: Add 200.9 parts of N-methylolacrylamide and 134.6 parts of water into a reaction kettle equipped with a stirrer, thermometer and reflux condensing device, and heat to a temperature of 30°C while stirring ~35°C; add 149.2 parts of formaldehyde dropwise while stirring, and drop it in 1h~1.5h; add 122.9 parts of diethylenetriamine and 250 parts of water to make a monomer solution, add 13.5 parts of sodium persulfate, 8.9 parts of sodium pyrosulfite and 120 parts of water Make an initiator solution; double drops of monomer solution and initiator solution, 2h ~ 2.5h dripping; raise the temperature to 50 ℃ and keep warm for 2h ~ 3h; cool down to room temperature, discharge, that is, a light yellow viscous liquid.

[0030] (2) Preparation of soil compacting aid: add 175 parts of prepared amide polyamine copolymers, 123 parts of water-based epoxy resin, 135 parts of sodium silicate, 47 parts of hydroxymethyl cellulose, 25 parts of pol...

Embodiment 3

[0032] (1) Preparation of amidopolyamine copolymer: same as in Example 2.

[0033] (2) Preparation of soil compacting aid: add 280 parts of prepared amide polyamine copolymers, 104 parts of water-based epoxy resin, 123 parts of sodium silicate, 42 parts of hydroxymethyl cellulose, 19 parts of polyamide in the reactor Propylene oxide butyl ether defoamer and 432 parts of water, heated to 40°C and stirred for 0.5h to 1h, cooled to room temperature and discharged.

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Abstract

The invention relates to a soil compaction assistant, in particular to a preparation method of the soil compaction assistant. The method includes the steps of: (1) using unsaturated amide, polyethylene polyamine and formaldehyde to prepare a polyamide polyamine copolymer under the action of an initiator; and (2) heating the prepared polyamide polyamine copolymer, waterborne epoxy resin, water soluble silicate, non-ionic cellulose ether, a polyethylene oxide (polypropylene oxide) ether defoaming agent and water, and stirring the materials evenly to obtain the soil compaction assistant. When the soil compaction assistant provided by the invention and a small amount of cement are co-doped in mucky soil, soil can solidify closely, the unconfined strength is greatly improved, contraction and expansion coefficients decrease, and the impermeability, frost resistance, and crack resistance of the soil are good. When the soil compaction assistant provided by the invention is applied to soft soil reinforcement, the construction is simple and is not affected by temperature, the work efficiency is high, the construction period can be greatly shortened, and the cost is reduced. Directed at different soil properties, the soil compaction assistant provided by the invention can be widely applied to water conservancy, channels and roads and other projects.

Description

technical field [0001] The invention relates to the technical field of civil engineering, in particular to a soil compaction aid, in particular to a preparation method of the soil compaction aid. Background technique [0002] With the deterioration of the ecological environment and the serious shortage of energy in the world, how to make full use of local building materials in the field of civil engineering construction to achieve the purpose of reducing energy consumption and curbing environmental degradation is a major issue facing civil engineers. At present, lime and cement are mostly used as soil reinforcement materials, which can enhance the strength of the soil, improve the water stability of the soil, and improve the engineering performance of the soil. However, the strength of lime soil increases slowly, and the growth strength is limited; the strength of cement soil is low, the drying shrinkage is large, and the durability is poor. [0003] Soil compaction aid is ...

Claims

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Application Information

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IPC IPC(8): C09K17/40C09K103/00
CPCC09K17/42C09K17/44C09K2103/00
Inventor 方绪顺陈国新祝烨然李益近付丹华王冬王蔚王伟
Owner NANJING HYDRAULIC RES INST
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