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A kind of non-autoclaved ceramsite concrete wallboard and preparation method thereof

A technology of ceramsite concrete and autoclave-free technology, which is applied in the field of building materials, can solve the problems of a large amount of steam, environmental pollution, high cost of high-pressure equipment, etc., achieve the effect of high strength and alleviate the shortage of supply

Active Publication Date: 2021-08-10
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This maintenance method not only takes a long time, but also requires a high cost of high-pressure equipment, and at the same time requires a large amount of steam, resulting in energy consumption and environmental pollution to a certain extent.

Method used

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  • A kind of non-autoclaved ceramsite concrete wallboard and preparation method thereof
  • A kind of non-autoclaved ceramsite concrete wallboard and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The non-autoclaved ceramsite concrete wallboard of this embodiment includes the following components: ceramsite, cementitious material, fine aggregate, water reducing agent, foaming agent and water. Among them, the ceramsite is artificial ceramsite, the density grade is 700, and the particle size is 2-8mm; the cementitious material is ordinary Portland cement with a strength grade of 42.5R; the fine aggregate is river sand; the water reducer is Polycarboxylate water reducer; the foaming agent is vegetable type, after mixing the foaming agent with a certain proportion of water, it is used after producing uniform and stable foam under the high-pressure gas condition of the foaming machine.

[0035] The dosage of single concrete ceramsite is 30% of the dry loose bulk density of ceramsite, and it is used after pre-wet treatment; in the rest of the concrete, the cementitious material is 100 parts, the fine aggregate is 220 parts, the net water consumption is 28 parts, and the...

Embodiment 2

[0042] The non-autoclaved ceramsite concrete wallboard of this embodiment includes the following components: ceramsite, cementitious material, fine aggregate, water reducing agent, foaming agent and water. Among them, the ceramsite is artificial ceramsite, the density grade is 600, and the particle size is 2-8mm; the cementitious material is Portland cement with a strength grade of 52.5; the fine aggregate is machine-made sand; the water reducer is naphthalene series Water reducing agent; the foaming agent is vegetable type, after mixing the foaming agent with a certain proportion of water, it is used after producing uniform and stable foam under the high-pressure gas condition of the foaming machine.

[0043]The dosage of single concrete ceramsite is 40% of the dry loose bulk density of ceramsite, and it is used after pre-wet treatment; in the rest of the concrete, the cementitious material is 100 parts, the fine aggregate is 200 parts, the net water consumption is 30 parts, a...

Embodiment 3

[0050] The non-autoclaved ceramsite concrete wallboard of this embodiment includes the following components: ceramsite, cementitious material, fully recycled fine aggregate, water reducing agent, foaming agent and water. Among them, the ceramsite is artificial ceramsite, the density grade is 600, and the particle size is 2-8mm; the cementitious material is ordinary Portland cement with a strength grade of 42.5R; the fully recycled fine aggregate is the waste concrete that is completely broken It is a product of recycled fine aggregate, its saturated surface dry water absorption rate is 6.0%, and the micropowder content is 9.5%; the water reducing agent is a polycarboxylate water reducing agent; After the water is mixed, it is used after producing uniform and stable foam under the high-pressure gas condition of the foaming machine. The dosage of single concrete ceramsite is 30% of the dry loose bulk density of ceramsite, and it is used after pre-wet treatment; in the rest of th...

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Abstract

The invention belongs to the field of building materials, and discloses an autoclave-free ceramsite concrete wallboard and a preparation method thereof. Put ceramsite, fine aggregate, cementitious material, water reducing agent and water into the concrete mixer and stir and mix, foam and stir through air-entraining agent or foaming agent until uniform to obtain concrete mixture; put the obtained concrete mixture evenly into the The material is placed in the wallboard mold with a rounded rectangular core mold and a steel cage skeleton, vibrated, grooved, and plastered, and then rested at a room temperature not lower than 20°C for 3 to 5 hours, and the core is pulled out under normal pressure. Dry heat curing, the curing temperature is 45-60°C, and the curing time is 4-6 hours. After the curing is completed, it is cooled and demoulded, and naturally cured to the age of 3 days to obtain the autoclaved ceramsite concrete wallboard. The invention adopts rounded rectangular openings and dry heat curing technology, and the dry apparent density of the obtained wallboard concrete is 1400-1700kg / m 3 , The compressive strength of the wallboard can reach 5-12MPa.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to a non-autoclaved ceramsite concrete wallboard and a preparation method thereof. Background technique [0002] As my country vigorously promotes the industrialization of buildings and increases the rate of prefabrication, prefabricated lightweight partition panels have also been widely promoted and applied. [0003] At present, the main prefabricated lightweight partition wall panels are ceramsite lightweight concrete wall panels. bulk density. In addition, the ceramsite lightweight concrete wall panel further reduces the surface density of the wall panel by opening holes inside the wall panel. Since the strength of concrete is greatly reduced after the introduction of a large number of pores, it is usually necessary to add a large amount of high-quality ceramsite to obtain concrete with sufficient strength and density. Because ceramsite needs to be fired, its outp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04
Inventor 杨医博曾威振李颜君陈广源张俊榕詹建潮柳志浩胡兆轩郭文瑛李欣悦王恒昌刘一枫
Owner SOUTH CHINA UNIV OF TECH