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A kind of LC30 light-weight high-strength pumping ceramsite concrete and its preparation method

A ceramsite concrete, high-strength technology, applied in the field of building materials to achieve the effects of low apparent density, improved workability, and inhibition of floating

Active Publication Date: 2022-06-21
陕西建工集团混凝土有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The ceramsite concrete uses crushed stone shale ceramsite with continuous gradation of 5mm to 20mm as light coarse aggregate. By adding additional water, the saturated pre-wetting process of ceramsite in general production is avoided, and water-soluble organic viscosity is added at the same time. It improves the water retention of ceramsite concrete by using additives and natural fine sand, solves the bleeding problem of ceramsite concrete at the initial stage of mixing due to the additional use of additional water, improves the workability of ceramsite concrete, and avoids the problem of lightweight aggregate concrete. Segregation and delamination improve the strength of ceramsite concrete

Method used

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  • A kind of LC30 light-weight high-strength pumping ceramsite concrete and its preparation method
  • A kind of LC30 light-weight high-strength pumping ceramsite concrete and its preparation method

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Experimental program
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Effect test

Embodiment 1

[0029] The ceramsite concrete of the present embodiment is composed of the following components in parts by mass: 340 parts of cement, 130 parts of fly ash, 302 parts of ceramsite, 340 parts of ceramic sand, 90 parts of natural medium sand, and 95 parts of machine-made sand medium sand, 70 parts of natural fine sand, 8.4 parts of water reducing agent, 188 parts of mixing water, 22 parts of additional water, 0.096 parts of water-soluble organic tackifier;

[0030] The ceramsite is a 5mm-20mm continuous gradation of crushed stone type shale ceramsite, and the bulk density of the ceramsite is 560kg / m 3 , the 2h water absorption rate is 9.5%, the cylinder compressive strength is 3.0MPa, the ceramsite has a dense structure and uniform pore distribution; the material of the ceramic sand is the same as that of the ceramsite, and the ceramic sand is medium sand, and the bulk density is 750kg / m2 3 .

[0031] The preparation method of the ceramsite concrete of the present embodiment co...

Embodiment 2

[0035] The ceramsite concrete of the present embodiment is composed of the following components in parts by mass: 350 parts of cement, 126 parts of fly ash, 280 parts of ceramsite, 355 parts of ceramic sand, 98 parts of natural medium sand, 97 parts of machine-made sand medium sand, 77 parts of natural fine sand, 8.8 parts of water reducing agent, 190 parts of mixing water, 22 parts of additional water, 0.103 parts of water-soluble organic tackifier;

[0036] The ceramsite is a 5mm-20mm continuous gradation of crushed stone type shale ceramsite, and the bulk density of the ceramsite is 600kg / m 3 , the 2h water absorption rate is 8.9%, the cylinder compressive strength is 3.3MPa, the ceramsite has a dense structure and uniform pore distribution; the material of the ceramsite is the same as that of the ceramsite, and the ceramsite is medium sand with a bulk density of 820kg / m2 3 .

[0037] The preparation method of the ceramsite concrete of the present embodiment comprises the ...

Embodiment 3

[0041] The ceramsite concrete of the present embodiment is composed of the following components in parts by mass: 345 parts of cement, 123 parts of fly ash, 315 parts of ceramsite, 350 parts of ceramic sand, 93 parts of natural medium sand, 93 parts of machine-made sand medium, 72 parts of natural fine sand, 8.2 parts of water reducing agent, 185 parts of mixing water, 23 parts of additional water, and 0.097 parts of water-soluble organic tackifier;

[0042] The ceramsite is a 5mm-20mm continuous gradation of crushed stone shale ceramsite, and the bulk density of the ceramsite is 610kg / m 3 , the 2h water absorption rate is 9.0%, the cylinder compressive strength is 3.3MPa, the ceramsite has a dense structure and uniform pore distribution; the material of the ceramic sand is the same as that of the ceramsite, and the ceramic sand is medium sand, and the bulk density is 810kg / m2 3 .

[0043] The preparation method of the ceramsite concrete of the present embodiment comprises th...

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Abstract

The invention discloses a LC30 light-weight high-strength pumping ceramsite concrete, which consists of the following components in parts by mass: 340-360 parts of cement, 120-130 parts of fly ash, 274-329 parts of ceramsite and 340 parts of ceramsite ~360 parts, 90~100 parts of natural medium sand, 90~100 parts of machine-made medium sand, 70~80 parts of natural fine sand, 8~9 parts of water reducer, 180~200 parts of mixing water, 15~25 parts of additional water parts, 0.096-0.106 parts of water-soluble organic tackifier; the invention also discloses a method for preparing LC30 light-weight high-strength pumping ceramsite concrete. The ceramsite concrete of the present invention saves the saturated pre-wetting process of ceramsite by rationally designing the mixing ratio, avoids layered segregation, and realizes the effect of light weight and high strength of lightweight aggregate concrete, making it suitable for pumping; the present invention The preparation method improves the production efficiency and reduces the preparation cost.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to LC30 light-weight and high-strength pumping ceramsite concrete and a preparation method thereof. Background technique [0002] As one of the important building materials in civil engineering, concrete is widely used in industrial and civil construction, water conservancy, highway, railway and other projects. However, ordinary concrete cannot meet some special needs due to its own weight, poor thermal insulation and other shortcomings. Compared with ordinary concrete, the density of lightweight aggregate concrete is 20% to 40% smaller than that of ordinary concrete. In terms of composition, lightweight aggregate concrete refers to the dry apparent density of not more than 1950kg / m3 prepared with light coarse aggregate, light sand or ordinary sand, cementitious materials, admixtures and water 3 According to its different uses in construction projects, it is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C04B18/02C04B14/06C04B111/40
CPCC04B28/04C04B18/027C04B14/06C04B2111/40C04B2201/20C04B2201/50C04B18/08C04B18/021C04B2103/302C04B2103/44C04B22/002
Inventor 蒙飞朱延斌杨小敏狄立榆徐宏刚朱玲王珂
Owner 陕西建工集团混凝土有限公司
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