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Microporous structure foam light soil and preparation method thereof

A technology of foam light soil and microporous structure, which is applied in the field of foam light soil, can solve the problems of uneven performance and quality of foam light soil, increase of density and quality of foam light soil, and achieve good product performance , Enhanced reinforcing effect, uniform pores

Inactive Publication Date: 2019-08-16
河南华泰新材科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although reducing the pore size helps to improve the strength of the foamed lightweight soil, it will relatively increase the density and quality of the foamed lightweight soil, and reducing the pore size is not a sufficient condition for improving the performance of the foamed lightweight soil. The reasons for the uneven performance and quality of foam lightweight soil

Method used

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  • Microporous structure foam light soil and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] The 300kg class microporous structure foam lightweight soil is made of the following raw materials: 250kg of PO425 cement, 0.06kg of foaming agent, 20kg of 1000 mesh silica fume, and 175kg of water.

[0045] The preparation method specifically comprises the following steps:

[0046] (1) take each raw material by the quality of above-mentioned microporous structure foam light soil;

[0047] (2) fully stirring and mixing PO425 cement and water to obtain a slurry;

[0048] (3) The foaming agent is mixed with water at a mass ratio of 1:60 (water 3.6kg) for immediate dilution, and added to a foaming machine for foaming to obtain a foamed foam; in the foaming process, the foamed foam The density is stable at 42±2kg / m 3 , the foam settlement distance is not greater than 3mm, the bleeding volume is not greater than 25mL, and the foaming air pressure is controlled at 0.62±0.01MPa;

[0049] (4) Stir and mix the slurry obtained in step (2), the foaming foam obtained in step (3) a...

Embodiment 2

[0052] A road and bridge project uses 400kg-class microporous structure foam light soil, which is made of the following raw materials: PO425 cement 310kg, foaming agent 0.5kg, 1500 mesh micro-silica fume 25kg, magnesium chloride 18kg, water 220kg.

[0053] The preparation method specifically comprises the following steps:

[0054] (1) take each raw material by the quality of above-mentioned microporous structure foam light soil;

[0055] (2) Using Huatai HT-18 intelligent large-scale foam concrete production equipment, fully mix PO425 cement and water to obtain slurry;

[0056] (3) Foaming agent and water are mixed with the mass ratio of 1:50 (water 25kg) and carry out instant dilution, and add in the foaming machine and foam, obtain foaming foam; In the foaming process, the foam density of foaming Stable at 48±2kg / m 3 , the foam settlement distance is not greater than 3mm, the bleeding volume is not greater than 25mL, and the foaming air pressure is controlled at 0.7±0.01MP...

Embodiment 3

[0060] The 500 kg-level microporous structure foam light soil is made of the following raw materials: 380 kg of 600-mesh hydraulic gelling material micropowder, 1 kg of foaming agent, 40 kg of 1000-mesh micro-silica fume, 26 kg of anhydrous sodium sulfate, and 270 kg of water;

[0061] Among them, the fine powder of hydraulic cementitious material is obtained by mixing and grinding PO425 cement, fly ash, and copper tailings powder at a mass ratio of 3:1:2 to 600 mesh.

[0062] The preparation method specifically comprises the following steps:

[0063] (1) take each raw material by the quality of above-mentioned microporous structure foam light soil;

[0064] (2) Fully stirring and mixing the micropowder of the hydraulic gelling material and water to obtain a slurry;

[0065] (3) Foaming agent and water are mixed with the mass ratio of 1:80 (water 80kg) and carry out instant dilution, and add in foaming machine and foam, obtain foaming foam; During foaming, the foam density of...

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Abstract

The invention discloses micro-pore structure foam light soil which is prepared from the following raw materials: a cementing material, foaming foam, micro-silicon powder, a modifier and water, whereinthe mass ratio of the components is 100:(0.51-30.3):(0-10):(0-8):(61-80). The method can effectively improve and improve the pore structure in the foam light soil. The micro-pore structure foam lightsoil is uniform and round in pores, thick and compact in pore wall, few in capillary pores, high in pore closing rate, good in pore closing effect, high in strength, capable of remarkably improving heat preservation and heat insulation and low in water permeability and water absorption rate. According to the technical scheme, the utilization rate of industrial solid waste and tailings can be effectively increased, the cement utilization amount is reduced, and the production cost is reduced. The product can be widely applied to road and bridge filling, roof heat preservation, pipeline backfilling, large-scale filling engineering, building component preparation and the like.

Description

technical field [0001] The invention relates to the technical field of foam light soil, in particular to a foam light soil with a microporous structure and a preparation method thereof. Background technique [0002] Foam light soil is a lightweight soil material containing a large number of small closed pores and having considerable strength by introducing air, nitrogen, carbon dioxide or oxygen into the light soil slurry by chemical or physical means according to the application requirements. , because of its low density, light weight, thermal insulation, sound insulation, earthquake resistance, environmental protection, durability, and convenient construction, it is widely used in roads, tunnels, house construction, backfilling and other fields. However, the strength of foam lightweight soil has always been its weakness. With the development of the application field, the application requirements of foam lightweight soil are to ensure its low density, light weight, heat pre...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B38/10
CPCC04B28/04C04B2201/32C04B2201/50C04B2103/42C04B18/146C04B38/10C04B22/12C04B22/147
Inventor 张建华许言言范志广华振来张春旭华科飞
Owner 河南华泰新材科技股份有限公司
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