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Preparation method of light composite concrete panel

A concrete and plate technology, which is applied in the field of preparation of lightweight composite concrete plates, can solve the problems of micro-cracks, inability to meet building structure, broken and other problems

Inactive Publication Date: 2018-09-11
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, the most common concrete slabs are used in industrial and civil buildings. Although the strength (generally 20-30MPa) can basically meet the requirements of the building structure, it is relatively heavy.
However, at present, both ordinary concrete panels and aerated concrete panels are brittle materials, which are easy to produce micro-cracks due to shrinkage, or even completely destroyed.
The strength of lightweight concrete slabs 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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  • Preparation method of light composite concrete panel
  • Preparation method of light composite concrete panel

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preparation example Construction

[0019] The present invention also provides a method for preparing the lightweight composite concrete slab, comprising the following steps:

[0020] (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;

[0021] (2) 25-45 parts by weight of slag powder, 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 light calcium carbonate, polyaluminum chloride 3-12 parts by weight, 15-48 parts by weight of light aggregate, and 1-5 parts by weight of reinforcing fiber are uniformly mixed under mechanical stirring conditions to obtain a powder mixture;

[0022] (3) Disperse 0.5-1.5 parts by weight of water reducer and 0-5 parts by weight of other additives in water evenly, then add them to the above po...

Embodiment 1

[0026] (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;

[0027] (2) 35 parts by weight of slag powder, 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 light calcium carbonate, 6 parts by weight of polyaluminum chloride, and 10 parts by weight of clay ceramsite (1~5mm), 10 parts by weight of pumice stone (1~5mm), 10 parts by weight of polyethylene foam, 5 parts by weight of polypropylene fiber and modified rubber are uniformly mixed under mechanical stirring conditions to obtain a powder mixture;

[0028] (3) 1.2 parts by weight of polycarboxylate superplasticizer (model PASP-Ca, purchased from Shandong Yuanlian Chemical Co., Ltd.), 1 part by weight of sodium dodecyl...

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. After mixing the acidified rubber and 9 parts by weight of maleic anhydride in water, stir and react at 120°C 1h, obtain modified rubber;

[0032](2) 25 parts by weight of slag powder, 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 castor stalk, polymerized 12 parts by weight of aluminum chloride, 1 part by weight of polyhexamethylene adipamide fiber and modified rubber are uniformly mixed under mechanical stirring to obtain a powder mixture;

[0033] (3) 1.5 parts by weight of polycarboxylate water reducer (model PASP-Ca, purchased from Shandong Yuanlian Chemical Co., Ltd.), 1 part by weight of sodium dodecylbenzenesulfonate, 1 part by weight of calcium stearate, 1 part by weight of hydroxyethyl methyl rei...

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Abstract

The invention relates to the technical field of concrete and preparation thereof, specifically to a preparation method of a light composite concrete panel. The preparation method of the light composite concrete panel comprises the following steps: uniformly mixing 25-45 parts by weight of slag powder, 15-35 parts by weight of cement, 15-30 parts by weight of fine sand, 5-12 parts by weight of diatomite, 3-15 parts by weight of light calcium carbonate, 3-12 parts by weight of polyaluminum chloride, 15-48 parts of lightweight aggregate, 1-5 parts of reinforced fibers and modified rubber under the condition of mechanical agitation so as to obtain a mixture; then adding a water reducer, an auxiliary agent and a foaming agent and uniformly mixing, and carrying out compression moulding to obtaina concrete panel sample. The light composite concrete panel prepared by the above method has characteristics of light weight, high strength and good weatherability, can meet performance index requirements of concrete panels in the building 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 preparation method of a lightweight composite concrete plate. Background technique [0002] In recent years, driven by building energy-saving policies, building energy-saving technologies and energy-saving materials have developed rapidly. Concrete slabs are the most widely used building materials in the construction industry. With the development of economy and technological progress, people's requirements for building materials are also increasing. quality and environmental requirements. At present, the most common concrete slabs used in industrial and civil buildings, although the strength (generally 20-30MPa) can basically meet the requirements of the building structure, but relatively heavy. However, at present, ordinary concrete panels and aerated concrete panels are brittle materials, which are easy to produce micro-cracks due to shrinkage, or even...

Claims

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Application Information

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IPC IPC(8): C04B28/00C04B111/40
CPCC04B28/00C04B2111/40C04B2201/20C04B2201/50C04B18/22C04B18/141C04B14/06C04B14/08C04B14/28C04B22/12C04B18/023C04B14/00C04B16/082C04B16/0633C04B24/24C04B24/20C04B24/085C04B24/383C04B22/0093C04B24/06C04B22/068C04B18/24C04B16/0691
Inventor 承忠富
Owner 芜湖恒固混凝土材料有限公司
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