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Quick-acting anti-slump restorer for pump concrete

A technology for pumping concrete and restoring agent, which is applied in the field of quick-acting anti-slump restoring agent for pumping concrete, can solve problems such as falling, and achieve the effects of easy availability of raw materials, quality assurance, and simple use method.

Active Publication Date: 2013-10-09
ANHUI INST OF BUILDING RES & DESIGN +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] It can be seen from Table 2 that the water-cement ratio is increased by 0.05 by adding water twice before entering the pump. Although the slump can meet the requirements, the compressive strength can only reach C30, which is 15% lower than the design requirement of C35.

Method used

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  • Quick-acting anti-slump restorer for pump concrete
  • Quick-acting anti-slump restorer for pump concrete
  • Quick-acting anti-slump restorer for pump concrete

Examples

Experimental program
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Effect test

Embodiment 1

[0019] Example 1. Take 70kg of naphthalenesulfonic acid formaldehyde condensation product water reducer, 15kg of strengthening agent, and 15kg of sodium lauryl sulfate sodium dodecylbenzenesulfonate, and mix them to make a quick-acting anti-slump recovery agent for pumping concrete.

[0020] The above accelerator is composed of triethanolamine, sodium sulfate and aluminum sulfate in a weight ratio of 70:15:15.

[0021] When the pumped concrete fails to meet the slump requirements of the pumped concrete, add the above-mentioned pumped concrete quick-acting anti-slump restoration agent according to 0.15 of the cement weight in the pumped concrete, and add the above-mentioned pumped concrete quick-acting anti-slump recovery agent according to the weight of the cement in the pumped concrete , add water to increase the water-cement ratio by 0.01, and stir evenly.

Embodiment 2

[0022] Example 2. Take 60kg of naphthalenesulfonic acid formaldehyde condensate superplasticizer, 20kg of strengthening agent, and 20kg of sodium lauryl sulfate sodium dodecylbenzenesulfonate, and mix them to make a fast-acting anti-slump restoration agent for pumping concrete.

[0023] The above accelerator is composed of triethanolamine, sodium sulfate and aluminum sulfate in a weight ratio of 70:15:15.

[0024] When the pumped concrete fails to meet the slump requirements of the pumped concrete, add the above-mentioned pumped concrete quick-acting anti-slump recovery agent according to 0.2% of the weight of the cement in the pumped concrete, and follow the cement in the pumped concrete Weight, add water to increase the water-cement ratio of 0.015, and stir evenly.

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Abstract

The invention discloses a quick-acting anti-slump restorer for pump concrete. The quick-acting anti-slump restorer for pump concrete is prepared from the raw materials in the following percentage by weight: 50-80% of a naphthalene sulfonate-formaldehyde condensate water reducer, 10-30% of a strength promoter, and 10-20% of sodium lauryl sulphate or sodium dodecyl benzene sulfonate, wherein in the case that pump concrete cannot achieve the requirements of a pump-entering slump, the quick-acting anti-slump restorer for pump concrete is added in a ratio of 0.15-0.2% of the weight of cement in the pump concrete, water is added to increase a water-cement ratio by 0.01-0.015, and the mixed pump concrete can be put into use after being uniformly stirred, and can quick restore to achieve the requirements of the pump-entering slump, and ensure no reduction of the compression strength, thus effectively solving the technical problems of the existing pump concrete in applications, and guaranteeing the quality of the pump concrete. The quick-acting anti-slump restorer for pump concrete is good in economic benefits and social benefits.

Description

Technical field: [0001] The invention relates to a quick-acting anti-slump recovery agent for pumped concrete, which belongs to the field of pumped concrete admixtures. Background technique: [0002] At present, the production and use of pumped concrete both at home and abroad adopt a single process line, that is, the concrete mixing station is used according to the object of the pumped concrete, according to the strength required by the design requirements of the pumped concrete and the slump requirements of the pump, after trial mixing After determining the weight ratio of the six materials of sand, stone, cement, fly ash, water and concrete admixture, they are weighed and sent to the concrete mixing system to mix and mix evenly. , sent to the application site, and then use the launder and discharge port set on the mixer truck to send the pumped concrete to the concrete high-pressure delivery pump, and pour it into the construction project in the prepared formwork through ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/22
Inventor 金树青项炳泉沈熙佐金骥张伟民金鑫章卫东许家齐刘勇夏毓宏
Owner ANHUI INST OF BUILDING RES & DESIGN
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