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Non-mechanical scabbling process for treating continuous end of prestressed concrete beam slab by using super retarder

An ultra-retarding agent and concrete technology, which is applied to the non-mechanical chiseling process of prestressed concrete and the preparation of ultra-retarding agent, can solve the problems of great difference, difficult quality control, laborious, etc. Tonal effect

Inactive Publication Date: 2020-10-20
云南交投公路建设第四工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a non-mechanical chiseling process for treating the continuous ends of prestressed concrete beams and slabs with an ultra-retarding agent, so as to solve the problems of time-consuming, laborious, large noise and dust pollution, and construction safety hazards in the common manual chiseling process. Large, the quality of chiseling at the continuous end of prestressed concrete varies greatly depending on the proficiency and responsibility of the workers, and it is difficult to control the quality

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A kind of super-retarder specially used for gouging the continuous ends of prestressed concrete beams and slabs, comprising the following materials in mass fractions: 10 parts of phosphate, 10 parts of hydroxyl surfactant, 1 part of air-entraining agent, 2 parts of stabilizer, and 60 parts of water ;

[0026] The stabilizer is one of xanthan gum, guar gum and polyacrylamide.

[0027] Wherein, the phosphate includes one of sodium hexametaphosphate, sodium tripolyphosphate and sodium pyrophosphate.

[0028] The hydroxyl surfactant includes one of triethylene glycol, Tween-80, Span, and polyethylene glycol octylphenyl ether.

[0029] And, in the process of preparation, the preparation is carried out in the following manner:

[0030] A preparation method of super retarder, comprising the following steps:

[0031] S1: Take 70% of the total water consumption and add it to the stirring tank;

[0032] S2: Add phosphate, hydroxyl surfactant, air-entraining agent and stabiliz...

Embodiment 2

[0039] A prestressed concrete beam continuous end chiseling super retarder, comprising the following materials in mass fractions: 30 parts of phosphate, 20 parts of hydroxyl surfactant, 3 parts of air-entraining agent, 5 parts of stabilizer, and 70 parts of water;

[0040] The stabilizer is one of xanthan gum, guar gum and polyacrylamide.

[0041] Wherein, the phosphate includes one of sodium hexametaphosphate, sodium tripolyphosphate and sodium pyrophosphate.

[0042] The hydroxyl surfactant includes one of triethylene glycol, Tween-80, Span, and polyethylene glycol octylphenyl ether.

[0043] And, in the process of preparation, the preparation is carried out in the following manner:

[0044] A preparation method of super retarder, comprising the following steps:

[0045] S1: Take 70% of the total water consumption and add it to the stirring tank;

[0046] S2: Add phosphate, hydroxyl surfactant, air-entraining agent and stabilizer to the stirred tank in sequence;

[0047]...

Embodiment 3

[0053] A prestressed concrete beam continuous end chiseling super retarder, comprising the following materials in mass fractions: 20 parts of phosphate, 12 parts of hydroxyl surfactant, 2 parts of air-entraining agent, 4 parts of stabilizer, and 65 parts of water;

[0054] The stabilizer is one of xanthan gum, guar gum and polyacrylamide.

[0055] Wherein, the phosphate includes one of sodium hexametaphosphate, sodium tripolyphosphate and sodium pyrophosphate.

[0056] The hydroxyl surfactant includes one of triethylene glycol, Tween-80, Span, and polyethylene glycol octylphenyl ether.

[0057] And, in the process of preparation, the preparation is carried out in the following manner:

[0058] A preparation method of super retarder, comprising the following steps:

[0059] S1: Take 70% of the total water consumption and add it to the stirring tank;

[0060] S2: Add phosphate, hydroxyl surfactant, air-entraining agent and stabilizer to the stirred tank in sequence;

[0061]...

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Abstract

The invention discloses a non-mechanical scabbling process for treating a continuous end of a prestressed concrete beam slab by using a super retarder, and relates to the field of concrete construction methods. The method specifically comprises the following steps that S1, a beam plate continuous end mold is cleaned; S2, a retarder is brushed; and S3, after beam body concrete pouring is completed,the mold is removed, and scabbling is completed. The problem that in the common manual scabbling process, the quality of the concrete continuous end scabbling quality is difficult to control due to the difference of workers is solved; and the problems that in the common manual scabbling process, time and labor are wasted, noise and dust pollution is large, the difference of the scabbling qualityof the concrete continuous end is large due to different proficiency degrees and responsibilities of workers, and quality control is difficult are solved.

Description

technical field [0001] The invention relates to the field of concrete construction methods, specifically, a method for preparing a super retarder and a prestressed concrete non-mechanical roughening process based on the retarder. Background technique [0002] Traditional chiseling is to use a "chopper" tool or an electric hammer to chisel out rough and exposed indentations on the continuous end surface of the concrete structure that has been poured. The function is to make the two construction sections bond firmly. Usually, in prefabricated structures and prestressed structures, secondary structural molding and assembly are required, and components need to be connected by secondary pouring to form a whole and jointly bear force. [0003] For many years, the continuous ends of prestressed concrete beams and slabs have been manually chiseled, which is time-consuming, laborious, noisy, dust-polluted, and hidden dangers in construction safety. difficult. Contents of the inve...

Claims

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Application Information

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IPC IPC(8): B28B11/08C04B40/00C04B40/02
CPCB28B11/0872C04B40/00C04B40/0039C04B40/02
Inventor 刘松柏刘书华许思鸿吴建军陆加毕蔡弘杨毓飞朱叶钧
Owner 云南交投公路建设第四工程有限公司
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