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Lightweight ceramsite concrete and preparation method thereof

A technology of lightweight ceramsite and concrete, which is applied in the field of building materials, can solve the problems affecting the performance of ceramsite concrete, the easy separation of ceramsite and cement slurry, and the easy segregation of lightweight ceramsite concrete, so as to weaken the shrinkage reduction performance, Strong cohesive force and effect of reducing slump

Inactive Publication Date: 2016-04-27
邢台建工商品混凝土有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during the construction process, lightweight ceramsite concrete is easy to segregate, and ceramsite and cement slurry are easy to separate, which seriously affects the performance of ceramsite concrete. Therefore, it is very necessary to provide a ceramsite concrete that is not easy to segregate.

Method used

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  • Lightweight ceramsite concrete and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A lightweight ceramsite concrete comprising the following components:

[0024] Medium sand 210kg, gravel 300kg, cement 465kg, fly ash 113kg, ultra-light ceramsite 235kg, ceramsite 235kg, water 150kg, aluminum calcium sulfate expansion agent 8kg and polycarboxylic acid superplasticizer 9.0kg.

[0025] The technical indicators of each component are as follows:

[0026] The ultra-light ceramsite is 200-grade ceramsite; the loose bulk density of ceramsite is 832kg / m3, and the fineness modulus is 3.8; the sand rate of the medium sand is 40%-45%, and the medium sand is medium sand in Zone II; Polycarboxylate high-efficiency water-reducing agent has a water-reducing rate of 25% and an air content of no more than 5%.

[0027] A preparation method for lightweight ceramsite concrete, comprising the steps of:

[0028] ⑴ Mixer feeding

[0029] d) First put in medium sand, gravel and ultra-light ceramsite, and then stir for 10 seconds;

[0030] e) Put in cement, fly ash and pott...

Embodiment 2

[0040] A lightweight ceramsite concrete, comprising the following components:

[0041] Medium sand 200kg, gravel 280kg, cement 470kg, fly ash 116kg, ultra-light ceramsite 240kg, ceramsite 240kg, water 155kg, aluminum calcium sulfate expansion agent 12kg and polycarboxylic acid superplasticizer 7.0kg.

[0042] The technical indicators of each component are as follows:

[0043] The ultra-light ceramsite is 200-grade ceramsite; the loose bulk density of ceramsite is 832kg / m3, the water-reducing rate of the polycarboxylate superplasticizer is 25%, and the gas content is not more than 5%; the fineness modulus is 3.8; The sand ratio of the above-mentioned medium sand: 40%-45%, the medium sand is the medium sand in zone Ⅱ.

[0044] A preparation method for lightweight ceramsite concrete, comprising the steps of:

[0045] ⑴ Mixer feeding

[0046] a) First put in medium sand, gravel and ultra-light ceramsite, and then stir for 10 seconds;

[0047] b) Put in cement, fly ash and pott...

Embodiment 3

[0057] A lightweight ceramsite concrete, comprising the following components:

[0058] Medium sand 219kg, gravel 316kg, cement 462kg, fly ash 110kg, ultra-light ceramsite 230kg, ceramsite 230kg, water 152kg, aluminum calcium sulfate expansion agent 10kg and polycarboxylic acid superplasticizer 9.6kg.

[0059] The technical indicators of each component are as follows:

[0060] The ultra-light ceramsite is 200-grade ceramsite; the loose bulk density of ceramsite is 832kg / m3, and the fineness modulus is 3.8; the sand rate of the medium sand is 40%-45%, and the medium sand is medium sand in Zone II; Polycarboxylate high-efficiency water-reducing agent has a water-reducing rate of 25% and an air content of no more than 5%.

[0061] A preparation method for lightweight ceramsite concrete, comprising the steps of:

[0062] ⑴ Mixer feeding

[0063] a) First put in medium sand, gravel and ultra-light ceramsite, and then stir for 10 seconds;

[0064] b) Put in cement, fly ash and po...

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Abstract

The invention provides a lightweight ceramsite concrete and a preparation method thereof. The lightweight ceramsite concrete comprises, by weight, 200-219 parts of medium sand, 462-470 parts of cement, 280-316 parts of cobblestones, 110-116 parts of fly ash, 230-240 parts of super light ceramsite, 230-240 parts of pottery sand, 150-155 parts of water, 8-12 parts of a calcium aluminum sulfate expanding agent and 7.0-9.6 parts of a polycarboxylate superplasticizer. The feeding sequence in the preparation process is changed, sandstones are first added, then cement, fly ash and ceramsite are added, and water and additives are added after the ceramsite and other raw materials are fully and uniformly stirred in order to obtain concrete with good workability; and gravity type mixing of a mixer truck is adopted in the transportation process to prevent the segregation and bleeding phenomena in the transportation process, so the defect of easy segregation of the ceramsite and cement grout is effectively solved. A ratio of all raw materials is optimized to reduce the slump, so the ceramsite difficultly floats up to the surface of concrete, and the defect of the easy segregation of the ceramsite and slurry is avoided.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a lightweight ceramsite concrete and a preparation method thereof. Background technique [0002] Ceramsite concrete is made of ceramsite instead of stone as the aggregate of concrete, with clay and loam as the main raw materials, which are processed, granulated, and inflated. Compared with ordinary concrete, ceramsite concrete has many advantages, such as light weight, heat preservation, heat insulation, good impermeability, good shock resistance, excellent fire resistance and strong construction adaptability. In addition, ceramsite concrete is resistant to acid, alkali corrosion and frost resistance. Performance is also better than ordinary concrete. At present, as an excellent building material, ceramsite concrete is gradually occupying a place in the field of concrete. However, in the construction process, lightweight ceramsite concrete is easy to segregate, and ceramsite...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00
CPCC04B28/00C04B2201/20C04B2201/50C04B14/06C04B14/02C04B18/08C04B18/027C04B18/023C04B22/148C04B2103/302
Inventor 南春明
Owner 邢台建工商品混凝土有限公司
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