Light foamed composite concrete wallboard

A concrete, lightweight technology, applied in applications, home appliances, ceramics, etc., can solve problems such as micro-cracks, chipping, damage, etc.

Inactive Publication Date: 2018-10-19
芜湖恒固混凝土材料有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, ordinary concrete is the most used in industrial and civil buildings. Although its strength (generally 20-30MPa) can basically meet the requirements of building structures, it is relatively bulky.
However, both ordinary concrete and air-entrained concrete are brittle materials at present, and it is easy to produce micro-cracks due to shrinkage, or even completely destroy them.
The strength of lightweight concrete on the market is very low (generally <5MPa), which cannot meet the requirements of building structures, and can only be used as non-load-bearing partition walls or insulation materials
In addition, air-entrained concrete wall panels are very brittle, easily broken during transportation and construction, and cannot be nailed on the wall panels

Method used

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Examples

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Effect test

preparation example Construction

[0016] The present invention also provides a method for preparing the lightweight foamed composite concrete wallboard, comprising the following steps:

[0017] (1) Soak the waste rubber particles in an acidic solution with a pH of 6-6.5 for 3-5 hours to obtain acidified rubber, mix the acidified rubber and maleic anhydride in water evenly, and then stir and react at 80-120°C for 1-2 hours , to obtain modified rubber;

[0018] (2) 30-50 parts by weight of fly ash, 15-35 parts by weight of cement, 15-30 parts by weight of fine sand, 5-12 parts by weight of diatomaceous earth, 3-15 parts by weight of amino-modified silica, polymerized 3-12 parts by weight of aluminum chloride, 15-48 parts by weight of lightweight aggregate, 1-5 parts by weight of reinforcing fiber and modified rubber are uniformly mixed under mechanical stirring conditions to obtain a mixture;

[0019] (3) Disperse 0.5-1.5 parts by weight of water reducer and 0-5 parts by weight of other additives in water evenl...

Embodiment 1

[0025] (1) Soak 4 parts by weight of waste rubber particles in an acidic solution with a pH of 6 to 6.5 for 4 hours to obtain acidified rubber. After mixing the acidified rubber and 10 parts by weight of maleic anhydride in water, stir and react at 100°C for 1 hour , to obtain modified rubber;

[0026] Mix tetrabutyl orthosilicate evenly in an aqueous sodium hydroxide solution with a pH of 10-12, then stand at 60°C for 120 minutes, and centrifugally wash to obtain nano-silica, and couple the nano-silica to silane Agent KH550 was mixed evenly in toluene, and then refluxed at 100-120°C for 6 hours to obtain amino-modified silica with a particle size of 0.5mm and a surface amino content of 0.6mmol / g;

[0027] (2) 40 parts by weight of fly ash, 25 parts by weight of cement, 23 parts by weight of fine sand, 8 parts by weight of diatomaceous earth, 8 parts by weight of amino-modified silica, 6 parts by weight of polyaluminum chloride, clay ceramsite 10 parts by weight (1-5mm), 10 p...

Embodiment 2

[0031] (1) Soak 3 parts by weight of waste rubber particles in an acidic solution with a pH of 6 to 6.5 for 3 hours to obtain acidified rubber, mix the acidified rubber with 9 parts by weight of maleic anhydride in water, and then stir and react at 120°C for 1 hour , to obtain modified rubber;

[0032] Mix tetrabutyl orthosilicate evenly in an aqueous sodium hydroxide solution with a pH of 11-12, then stand at 80°C for 150 minutes, and centrifugally wash to obtain nano-silica, and couple the nano-silica to silane Agent KH550 was mixed evenly in toluene, and then refluxed at 120°C for 5 hours to obtain amino-modified silica with a particle size of 1mm and a surface amino content of 0.8mmol / g;

[0033] (2) 35 parts by weight of fly ash, 35 parts by weight of cement, 15 parts by weight of fine sand, 12 parts by weight of diatomaceous earth, 5 parts by weight of polyethylene foam (1 ~ 5mm), 10 parts by weight of expanded vermiculite, polymerized 12 parts by weight of aluminum chl...

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Abstract

The invention relates to the technical fields of concrete and preparation thereof, in particular to a light foamed composite concrete wallboard. The light foamed composite concrete wallboard is prepared from the following raw materials in parts by weight: 25 to 45 parts of fly ash, 15 to 35 parts of cement, 15 to 30 parts of fine sand, 5 to 12 parts of diatomite, 3 to 15 parts of amino-modified silicon dioxide, 3 to 12 parts of poly aluminum chloride, 15 to 48 parts of lightweight aggregate, 3 to 8 parts of waste rubber particles, 1 to 5 parts of reinforced fiber, 1 to 3 parts of a foaming agent, 0.5 to 1.5 parts of a water reducer, and 0 to 5 parts of other additives. The light foamed composite concrete wallboard has the characteristics of low weight, high strength and good shock resistance, can meet the requirement on concrete performance indexes by the construction industry, and has a good application prospect.

Description

technical field [0001] The invention relates to the technical field of concrete and its preparation, in particular to a lightweight foamed composite concrete wallboard. Background technique [0002] In recent years, driven by building energy-saving policies, building energy-saving technologies and energy-saving materials have developed rapidly. Concrete is the most widely used building material in the construction industry. With the development of the economy and the advancement of technology, people's requirements for building materials are also constantly increasing. Not only does the concrete require high strength and durability, but the concrete should also meet the requirements of light weight and environmental protection. requirements. At present, the most common concrete used in industrial and civil buildings, although its strength (generally 20-30MPa) can basically meet the requirements of building structures, is relatively heavy. However, at present, ordinary conc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B38/02C04B20/02
CPCC04B28/00C04B20/023C04B38/02C04B2201/50C04B18/08C04B14/06C04B14/08C04B22/12C04B18/025C04B14/047C04B22/068C04B16/082C04B16/0633C04B18/22C04B2103/302C04B24/20C04B24/085C04B24/283C04B22/0093C04B24/10C04B38/0067C04B14/204C04B16/0691C04B24/383
Inventor 承忠富
Owner 芜湖恒固混凝土材料有限公司
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