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Expanded perlite foam light soil and preparation method thereof

A technology of expanded perlite and foam light soil, which is applied in the field of building materials, can solve the problems of poor toughness, poor construction stability, and low impact resistance, etc., to improve flexural strength, prevent segregation, improve crack resistance and The effect of durability performance

Inactive Publication Date: 2020-02-21
SHENYANG POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a kind of expanded perlite foam light soil and its preparation method. The technical problem to be solved by the present invention is to solve the problem of poor construction stability of foam light soil when it is used on roads, and it is easy to crack and has poor toughness and impact resistance. Low cost and low durability, while retaining the advantages of light weight, heat preservation and environmental protection of foam lightweight soil materials, at the same time, improve the strength, toughness and impact resistance of foam lightweight soil so that it can have multiple functions in engineering applications. improve its construction

Method used

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  • Expanded perlite foam light soil and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A kind of expanded perlite foam light soil, comprises the following steps:

[0042] S1. Weigh 155kg of water, add one-third of the water to 9kg of expanded perlite for pre-wetting treatment for 5-10 minutes.

[0043] S2. First, weigh 335kg of cement, 85kg of fly ash, 1.5kg of hydroxypropyl methylcellulose and 40kg of redispersible latex powder and put them into the mixer for initial mixing for 20-30s. Secondly, put the processed expanded perlite into the mixer Continue to stir for 40~60s. Finally, stir the remaining water and 0.5kg polycarboxylate superplasticizer and pour it into the mixer, and continue to stir for 10~15min.

[0044] S3. At the same time, weigh 1.25kg of cement foaming agent and water to dilute at a ratio of 1:50, stir for 2-3 minutes, start the foaming machine for foaming, then add the prepared foam to the expanded perlite cement slurry, and continue stirring 2~3min to form a mixed slurry, and after the mixed slurry is poured and cured, the expanded p...

Embodiment 2

[0046] A kind of expanded perlite foam light soil, comprises the following steps:

[0047] S1. Weigh 178kg of water, add one-third of the water to 18kg of expanded perlite for pre-wetting treatment for 5-10 minutes.

[0048] S2. First, weigh 335kg of cement, 85kg of fly ash, 1.5kg of hydroxypropyl methylcellulose and 20kg of redispersible latex powder and put them into the mixer for initial stirring for 20-30s. Secondly, put the processed expanded perlite into the mixer Continue to stir for 40~60s. Finally, stir the remaining water and 0.5kg polycarboxylate superplasticizer and pour it into the mixer, and continue to stir for 10~15min.

[0049] S3. At the same time, weigh 1.68kg of cement foaming agent and water to dilute at a ratio of 1:50, stir for 2 to 3 minutes, start the foaming machine for foaming, then add the prepared foam to the expanded perlite cement slurry, and continue stirring 2~3min to form a mixed slurry, and after the mixed slurry is poured and cured, the ex...

Embodiment 3

[0051] A kind of expanded perlite foam light soil, comprises the following steps:

[0052] S1. Weigh 193kg of water, add one-third of the water to 27kg of expanded perlite for pre-wetting treatment for 5-10 minutes.

[0053] S2. First, weigh 335kg of cement, 85kg of fly ash, 1.5kg of hydroxypropyl methylcellulose and 40kg of redispersible latex powder and put them into the mixer for initial mixing for 20-30s. Secondly, put the processed expanded perlite into the mixer Continue to stir for 40~60s. Finally, stir the remaining water and 0.5kg polycarboxylate superplasticizer and pour it into the mixer, and continue to stir for 10~15min.

[0054] S3. At the same time, weigh 2.1kg of foaming agent and water to dilute at a ratio of 1:50, stir for 2 to 3 minutes, start the foaming machine for foaming, then add the prepared foam to the expanded perlite cement slurry, and continue stirring for 2 ~3min to form a mixed slurry. After the mixed slurry is poured and cured, the expanded pe...

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Abstract

The invention discloses expanded perlite foam light soil, and belongs to the technical field of building materials; the expanded perlite foam light soil comprises the following components in parts byweight: 9-27 parts of expanded perlite, 420 parts of a cementing material, 155-195 parts of water, 20-60 parts of latex powder, 1.25-2.1 parts of a foaming agent, 1.5 parts of a thickening agent and 0.5 part of a water reducing agent. In the prepared foamed light soil, due to the addition of the lightweight aggregate expanded perlite, the phenomena of pumping defoaming, segregation, water bleedingand the like easily occurring in construction are solved, and a skeleton effect is achieved, so that the density of the foam light soil is reduced while the strength is ensured; the redispersible latex powder is added, so that the toughness and impact resistance of the material are improved, the water absorption is reduced, and the durability is improved.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to an expanded perlite foam light soil and a preparation method thereof. Background technique [0002] Foam lightweight soil, as an inorganic porous material, is applied to highway subgrade, which is a new technology that changes the conventional highway subgrade filling process. The production process of foam lightweight soil embodies the characteristics of new technology, new technology, environmental protection and secondary utilization of resources, and has very broad application prospects. The foam lightweight soil material has the advantages of low density, light weight, greater strength than conventional backfill, forming a whole after filling, no lateral pressure, and small load on the foundation. After filling with foam light soil, the road is in a super-consolidated state, thereby reducing settlement and uneven settlement, reducing the post-construc...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B38/10C04B111/40C04B111/20C04B111/27C04B111/34
CPCC04B28/04C04B38/106C04B2111/20C04B2111/27C04B2111/343C04B2111/40C04B18/08C04B24/383C04B2103/0057C04B14/185C04B2103/302
Inventor 李明烁宁宝宽韩双语
Owner SHENYANG POLYTECHNIC UNIV
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