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A kind of sleeve grouting material for high-temperature steel bar connection and preparation method thereof

A sleeve grouting and warm-type technology, which is applied in the field of building materials, can solve problems such as unsatisfactory grouting effects, achieve the effects of prolonging the working time, reducing construction costs, and ensuring working performance

Active Publication Date: 2022-06-28
武汉合创炬盛科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems in the prior art, the present invention provides a high-temperature sleeve grouting material for steel bar connection and its preparation method, which solves the problem that the sleeve grouting material for steel bar connection needs to take cooling measures when it is used in a high temperature environment and the grouting effect is not good. ideal question

Method used

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  • A kind of sleeve grouting material for high-temperature steel bar connection and preparation method thereof

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Effect test

Embodiment 1

[0025] A preparation method of a sleeve grouting material for high temperature type steel bar connection, comprising the following steps:

[0026] Step 1: Weigh 0.5% of stabilizer, 0.25% of organic film coating agent, 0.25% of temperature regulator and 0.35% of functional admixture by weight percentage, and mix well;

[0027] Wherein, the stabilizer is at least one of bentonite, zeolite powder and metakaolin, and the specific surface area of ​​the stabilizer is ≥350m 2 / kg;

[0028] The organic film coating agent is composed of 15% cellulose ether, 15% citric acid, 8% biopolysaccharide gum and 62% calcium stearate by weight percentage; 400 viscosity hydroxypropyl methyl cellulose ether is used as the cellulose ether. , the biological polysaccharide gum is at least one of Brunei gum, xanthan gum and Dingyou gum;

[0029] The temperature regulator is dissolved in 80% absolute ethanol by 3% sodium nitrate and / or calcium nitrate, 6% polyol ethoxylate, 11% multi-sheet layered gra...

Embodiment 2

[0037] A preparation method of a sleeve grouting material for high temperature type steel bar connection, comprising the following steps:

[0038] Step 1: Weigh 1.5% of stabilizer, 0.45% of organic film coating agent, 1.05% of temperature regulator and 0.45% of functional admixture by weight percentage, and mix well;

[0039] Wherein, the stabilizer is at least one of bentonite, zeolite powder and metakaolin, and the specific surface area of ​​the stabilizer is ≥350m 2 / kg;

[0040] The organic film coating agent is composed of 25% cellulose ether, 18% citric acid, 4.5% biopolysaccharide gum and 52.5% calcium stearate by weight percentage; the cellulose ether is selected from 400 viscosity hydroxypropyl methyl cellulose ether , the biological polysaccharide gum is at least one of Brunei gum, xanthan gum and Dingyou gum;

[0041] The temperature regulator is dissolved in 80% absolute ethanol by 2.5% sodium nitrate and / or calcium nitrate, 7.5% polyol ethoxylate, 10% multi-shee...

Embodiment 3

[0049] A preparation method of a sleeve grouting material for high temperature type steel bar connection, comprising the following steps:

[0050] Step 1: Weigh 4% of stabilizer, 0.75% of organic film coating agent, 1.25% of temperature regulator and 0.65% of functional admixture by weight percentage, and mix well;

[0051] Wherein, the stabilizer is at least one of bentonite, zeolite powder and metakaolin, and the specific surface area of ​​the stabilizer is ≥350m 2 / kg;

[0052] The organic film coating agent is composed of 27% cellulose ether, 25% citric acid, 3% biopolysaccharide gum and 45% calcium stearate by weight percentage; 400 viscosity hydroxypropyl methyl cellulose ether is used as the cellulose ether. , the biological polysaccharide gum is at least one of Brunei gum, xanthan gum and Dingyou gum;

[0053] The temperature regulator is dissolved in 80% absolute ethanol by 4% sodium nitrate and / or calcium nitrate, 8.5% polyol ethoxylate, 7.5% multi-lamellar graphen...

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Abstract

The invention relates to the technical field of building materials, and discloses a sleeve grouting material for high-temperature steel bar connection, which comprises 45-57% of cementitious material, 36-52% of aggregate, 0.5-5% of stabilizer, organic coating 0.25-0.75% film agent, 0.25-1.25% temperature regulator and 0.35-0.65% functional admixture; a preparation method of sleeve grouting material for high-temperature steel bar connection, including steps: Step 1: Weighing stabilizer, organic Coating agent, temperature regulator and functional admixture, mix well; step 2: weigh the gelling material, add the mixture while stirring, and mix well; step 3: add aggregate while stirring, mix well; Step 4: Weigh the high-temperature type steel bar connection sleeve grouting material and mix it with water, add a high temperature type steel bar connection sleeve grouting material into the mixing water while stirring, mix and mix evenly to obtain a finished product ; Solve the problem that the sleeve grouting material used for steel bar connection needs to take cooling measures and the grouting effect is not ideal when it is used in a high temperature environment.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a sleeve grouting material for high-temperature steel bar connection and a preparation method thereof. Background technique [0002] Sleeve grouting material for steel bar connection, as the main bonding material between steel bar and sleeve, plays an important role in the increasingly widely used field of prefabricated concrete buildings. Its quality is directly related to the connection reliability of steel bar and sleeve, and even affects safety of the building structure. [0003] As a cement-based building material, the sleeve grouting material for steel bar connection is deeply affected by the ambient temperature in the grouting construction project of prefabricated concrete buildings. 2015) clearly mentioned: "during grouting construction, the ambient temperature should meet the requirements of the grouting product instruction manual; when the ambient temperatur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/16
CPCC04B28/16C04B7/02C04B18/141C04B14/104C04B14/047C04B14/106C04B24/383C04B24/06C04B24/38C04B24/085C04B22/085C04B24/02C04B14/024C04B2103/302C04B2103/0068C04B24/42C04B14/068C04B14/06C04B14/324C04B14/34C04B22/002
Inventor 杨国刚朱海军黄键黄金涛
Owner 武汉合创炬盛科技有限公司