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C110 strength level vibration-free pumpcrete for bare wall column structure

A strength grade, concrete technology, applied in the field of concrete, can solve the problems of easy cracking, difficult to meet pumping construction requirements, poor workability of concrete, etc., to ensure quality, meet pumping vibration-free construction requirements, and workability Good results

Inactive Publication Date: 2011-01-12
SHENZHEN ANTUSN CONCRETE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, some manufacturers can produce concrete with C110 strength grade, but because the total cementitious material far exceeds 600kg / m 3 , this kind of concrete has poor workability, and it is difficult to meet the requirements of pumping construction, and it is impossible to make the concrete self-compacting.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Water: 4.9%; cementitious material 24.3%; sand: 30%; stone: 40%; superplasticizer: 0.80%.

[0013] The cementitious material is mainly composed of the following material components (calculated according to weight percentage): cement: 68.9%; slag: 10.9%; fly ash: 8.4%; silicon powder: 11.8%.

[0014] After mixing the materials in the above proportions with a mixer, they can be mixed into concrete for building construction.

Embodiment 2

[0016] Water: 4.7%; cementitious material 24.5%; sand: 29.1%; stone: 40.8%; superplasticizer: 0.90%.

[0017] The cementitious material is mainly composed of the following material components (calculated according to weight percentage): cement: 71.7%; slag: 8.3%; fly ash: 9.2%; silicon powder: 10.8%.

[0018] The materials in the above proportions are mixed with a mixer and then mixed into concrete for building construction.

Embodiment 3

[0020] Water: 4.8%; cementitious material 23.8%; sand: 26.9%; stone: 43.7%; superplasticizer: 0.80%.

[0021] The cementitious material is mainly composed of the following material components (calculated according to weight percentage): cement: 66.7%; slag: 10.0%; fly ash: 10.0%; silicon powder: 13.3%.

[0022] The materials in the above proportions are mixed with a mixer and then mixed into concrete for building construction.

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Abstract

The invention relates to a C110 strength level vibration-free pumpcrete for a bare wall column structure, which can be directly used in a bare wall structure. The concrete can not produce detrimental cracks after hardening; and meanwhile, the concrete has favorable construction workability, and can achieve pumping and no vibration in construction. The C110 strength level vibration-free pumpcrete mainly comprises the following components in percentage by weight: 4-5% of water, 23-26% of cementing material, 25-35% of sand, 39-44% of stone and 0.8-1% of high efficiency water reducing agent.

Description

technical field [0001] The invention relates to a kind of concrete, in particular to a C110 intensity level pumping vibration-free concrete used for the exposed wall column structure. Background technique [0002] Concrete is an indispensable building material in engineering construction. According to the design requirements of building structures, the strength application of high-strength concrete can be divided into different strength grades. For example: C60, C70, C80, C100, C110, etc. C110 concrete is generally used for wall columns of load-bearing structures. The construction of C110 pumped concrete has high requirements on the workability of concrete. During concrete pumping construction, the slump of concrete is generally required to be greater than 220mm, and the expansion degree is generally required to be greater than 600mm. In the concrete construction of some special building structures, the concrete is also required to meet the vibration-free self-density techn...

Claims

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Application Information

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IPC IPC(8): C04B28/00
Inventor 梁锡武
Owner SHENZHEN ANTUSN CONCRETE
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