Foamed light soil and preparation method thereof

A technology of air-bubble lightweight soil and air bubbles, which is applied in the field of building materials, can solve the problems of low efficiency and high installation and construction costs, and achieve the effects of reducing self-shrinkage, improving construction performance, and optimizing hydration activity

Inactive Publication Date: 2019-09-06
HEBEI COMM INVESTMENT TECH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The invention provides a tool for laying steel bearing plates on both sides of the main beam with simple structure, high structural mechanical performance, low cost investment, convenient construction on site and popularization and application, so as to solve the problem of existing prefabricated beam-column nodes and main beams. The technical problems of high cost and low efficiency of side formwork installation and construction

Method used

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  • Foamed light soil and preparation method thereof
  • Foamed light soil and preparation method thereof
  • Foamed light soil and preparation method thereof

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specific Embodiment

[0044] Among the raw materials, ordinary Portland cement with P O 42.5 is used for cement, and the combination of fly ash and silica fume is used for industrial waste powder. The activity index of fly ash is 93%, the loss on ignition is 4.1%, and the sieve residue of 45μm square hole is 11%. , the activity index of silica fume is 110%, SiO 2 Mass content 93%, specific surface area 17000m 2 / kg. The waterproofing agent is selected from alkoxysilane waterproofing agent, and the surfactant is selected from sodium lauryl alcohol ether sulfate. Machine-made sand is used as filler, with a fineness modulus of 2.83, a crushing value of 7.4%, a methylene blue value (MB value) of 1.5, and a mass content of fine particles (particle size <0.075 μm) of 9%. The water is ordinary tap water.

[0045] Among them, the following DM is dimethylaminoethyl methacrylate; the third functional body represents 3-(2-methacryloyloxyethyldimethylamino)propanesulfonate, and its chemical formula is HPE...

Embodiment 3～4

[0085] Among the raw materials, ordinary Portland cement with P O 42.5 is used for cement; blast furnace slag powder is used for industrial waste powder, and its specific surface area is 500m 2 / kg, the activity index is 97%; emulsified paraffin wax is selected as the waterproofing agent, vegetable protein foaming agent is selected as the surfactant; high-titanium heavy slag sand is used as the filler, the fineness modulus is 3.04, the crushing value is 5.4%, methylene The blue value (MB value) is 1.5, the mass content of fine particles (particle diameter<0.075 μm) is 4.1%; the water is ordinary tap water.

[0086] Composite high-energy expansion agent preparation comprises the following steps in the embodiment:

[0087] 1) Crushing the magnesite with a jaw crusher, and selecting particles with a particle size of 40 to 80 mm from the crushed tailings;

[0088] 2) Put the selected tailings particles of 40-80mm in a vacuum drying oven at 130°C for 2.5 hours, and grind them afte...

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Abstract

A low environmental load type foamed light soil disclosed in the invention is prepared from cement, industrial waste residue powder, an expansion agent, a high mud resistance composite admixture, a waterproof agent, air bubbles, a filler and water. The industrial waste residue powder is adopted to replace a part of cement, and the filler can select mine tailings sand or machine-made sands, so environmental damage and land resource wastes, caused by stacking of the industrial waste residues, are reduced, and the environmental load is low; a part of the expansion agent is added to reduce the shrinkage of the foamed light soil and improve the volume stability and the early cracking resistance of the foamed light soil; and the high mud resistance admixture can fully disperse the cement and other cementing particles in the case of the filler containing fine powder particles with a high adsorption capacity, so the cementing ability and the construction performance of the foamed light soil are improved. The low environmental load type foamed light soil prepared in the invention effectively utilizes solid wastes, has great environmental protection significance, and also has the characteristics of light weight, high compressive strength, good integrity, solidifying independence and thermal insulation.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to an air-bubble lightweight soil and a preparation method thereof. Background technique [0002] Bubble lightweight soil is a porous material formed by mixing prepared air bubbles, cementitious materials, fillers, and water in a certain proportion. Its bulk density is smaller than ordinary fill (usually only 1 / 3), its strength and bulk density can be adjusted freely according to application needs, convenient construction, light weight, high strength, good integrity, self-supporting condensation and thermal insulation, etc. Widely used in abutment backfilling, road widening, steep slope subgrade, soft soil subgrade load reduction, tunnel cavity grouting and frozen soil subgrade thermal insulation in road engineering, which can effectively solve bridge head jumping and settlement differences between old and new subgrades , settlement control of soft soil subgrade, stabili...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B38/10C04B22/06C04B2/10C04B24/26C08F283/06C08F220/06C08F220/34C04B111/40
CPCC04B2/102C04B22/066C04B24/2694C04B28/04C04B2111/00146C04B2111/40C04B2201/20C08F283/065C04B18/08C04B18/146C04B14/06C04B24/42C04B24/16C04B38/10C04B18/141C04B24/36C04B24/14C08F220/06C08F220/34
Inventor 郭凯张再武谢敏陈俊琪曹雯婕张星驰王玥计璟卉郭袁韩雪
Owner HEBEI COMM INVESTMENT TECH DEV CO LTD
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