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A kind of sleeve grouting material for low-temperature steel bar connection and its application method

A sleeve grouting and low-temperature type technology, which is applied in the field of cement-based building materials and prefabricated building materials, can solve the problems that the ultra-low temperature type steel bar connection sleeve cannot be used and cannot meet the construction requirements, so as to ensure the construction quality and early The effect of high strength and later strength growth

Active Publication Date: 2022-02-15
CNBM ZHONGYAN TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To sum up, low-temperature grouting materials cannot meet the construction requirements at temperatures below -10°C or lower, and cannot be applied to ultra-low temperature sleeve grouting materials for steel bar connections with higher strength requirements of 100MPa

Method used

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  • A kind of sleeve grouting material for low-temperature steel bar connection and its application method
  • A kind of sleeve grouting material for low-temperature steel bar connection and its application method
  • A kind of sleeve grouting material for low-temperature steel bar connection and its application method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] 25 parts of fast setting rapid hardening high belite sulfoaluminate cement;

[0047] Portland cement 23 parts;

[0048] 3 parts of ultra-high strength sulfoaluminate cement;

[0049] 0.7 parts of gypsum;

[0050] 2 parts of superfine fly ash;

[0051] 45 parts of aggregate;

[0052] 0.3 parts of nanocrystalline core;

[0053] 0.5 parts of sodium nitrite;

[0054] 0.2 parts of powder polycarboxylate high-performance water reducer;

[0055] 0.08 part of polyether defoamer;

[0056] 0.11 parts of expansion agent, including 0.1 part of HCSA expansion agent and 0.01 part of plastic expansion agent;

[0057] 0.001 parts of cellulose ether, the viscosity is 400mPa·s;

[0058] Viscosity reducer 0.15 parts;

[0059] Mix the above-mentioned raw materials in proportion to prepare the sleeve grouting material for low-temperature steel bar connection, mix it with a mixer with 12% water consumption, and put it aside for 2 minutes to defoam before construction and application...

Embodiment 2

[0064] 30 parts of fast setting rapid hardening high belite sulfoaluminate cement;

[0065] Portland cement 15 parts;

[0066] 5 parts of ultra-high strength sulfoaluminate cement;

[0067] 1.4 parts of gypsum;

[0068] 5 parts of silica fume;

[0069] 40 parts of aggregate;

[0070] 1.0 parts of nanocrystalline core;

[0071] 1.5 parts of sodium nitrite;

[0072] 0.48 parts of powder polycarboxylate high-performance water reducer;

[0073] 0.09 part of polyether defoamer;

[0074] 0.13 parts of expansion agent, including 0.1 part of HCSA expansion agent and 0.03 part of plastic expansion agent;

[0075] 0.001 parts of cellulose ether, the viscosity is 400mPa·s;

[0076] 0.4 parts of viscosity reducer;

[0077] Mix the above-mentioned raw materials in proportion to prepare the sleeve grouting material for low-temperature steel bar connection, mix it with a mixer with 11% water consumption, and put it aside for 2 minutes to defoam before construction and application. ...

Embodiment 3

[0083] 20 parts of fast setting rapid hardening high belite sulfoaluminate cement;

[0084] Portland cement 30 parts;

[0085] 0.5 parts of ultra-high strength sulfoaluminate cement;

[0086] 0.1 parts of gypsum;

[0087] 3.6 parts of superfine fly ash;

[0088] 45 parts of aggregate;

[0089] 0.1 part of nanocrystalline core;

[0090] Calcium nitrite 0.2 parts;

[0091] 0.3 parts of powder polycarboxylate high-performance water reducer;

[0092] 0.03 part of polyether defoamer;

[0093] 0.11 parts of expansion agent, including 0.1 part of HCSA expansion agent and 0.01 part of plastic expansion agent;

[0094] 0.001 parts of cellulose ether, the viscosity is 400mPa·s;

[0095] Viscosity reducer 0.1 part;

[0096] Mix the above-mentioned raw materials in proportion to prepare the sleeve grouting material for low-temperature steel bar connection, mix it with a mixer with 11% water consumption, and put it aside for 2 minutes to defoam before construction and application....

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Abstract

The invention relates to a sleeve grouting material for low-temperature type steel bar connection and a method for using the same. Aggregate, nano crystal core, antifreeze agent, powder polycarboxylate high-performance water reducer, polyether defoamer, expansion agent, cellulose ether, viscosity reducer as raw materials, can meet the requirements of -15°C-10°C Ultra-low temperature construction needs.

Description

technical field [0001] The invention belongs to the field of cement-based building materials, in particular to the field of prefabricated and assembled building materials, in particular to a grouting material for sleeve grouting construction for steel bar connection under low temperature conditions. Background technique [0002] With the development of prefabricated buildings, the construction technology of steel bar sleeve grouting connection is becoming more and more mature. The steel bar sleeve grouting connection technology is not limited by the diameter of the steel bar, the type of load and the height of the building. It has a wide range of applications and is recognized worldwide as a PC The most valuable technology for connecting components. It means that after the prefabricated components are hoisted, the sleeve grouting material for steel bar connection is injected into the sleeve. After the slurry solidifies and hardens, the steel bar, sleeve and slurry form a who...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/14C04B111/70
CPCC04B28/14C04B2111/70C04B2201/50C04B2111/00008C04B7/32C04B7/02C04B18/08C04B18/146C04B18/12C04B14/06C04B18/0481C04B18/0409C04B14/08C04B14/303C04B2103/601C04B24/24C04B24/32C04B22/126C04B24/125C04B24/085C04B24/2623C04B22/062C04B22/10C04B14/28C04B14/042C04B24/383C04B24/124
Inventor 瞿海洋朱玉雪范德科马凯李婷王泽瀚张帅王健
Owner CNBM ZHONGYAN TECH
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