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Prestressed channel grouting agent and production method thereof

A channel grouting and prestressing technology, which is applied in the field of prestressed channel grouting agent for prestressed reinforced concrete channel grouting construction, can solve the problem of reducing the durability and bearing capacity of concrete structural members, and the management and detection methods cannot keep up with the channel. Problems such as the deviation of grouting quality can be solved, and the effect of good workability, good filling degree and low dependence degree of the slurry can be achieved

Inactive Publication Date: 2016-07-06
GUANGXI NANNING BAIRUITONG SYNTHESIS BUILDING MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the prestressed channel grouting is a concealed project in bridge engineering, once it is poured, it will become a dark box, and the quality is not easy to check. In addition, the management and detection methods cannot keep up. This kind of concealed project will not be found even if there are holes. The presence of moisture and air intrusion and corrosion of steel beams will greatly reduce the durability and bearing capacity of concrete structural members, resulting in deviations in the actual grouting quality of the tunnel, so the quality of grouting has become the focus of attention in the engineering field

Method used

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  • Prestressed channel grouting agent and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Raw material and weight:

[0030] 40 parts of mineral filler with 600 mesh fineness, 50 parts of U-shaped expansion agent, 6 parts of water reducer, 5 parts of strengthening agent, 1 part of retarder, 0.5 parts of defoamer, 6 parts of water retention agent, and 0.01 parts of plastic expansion agent parts, 0.05 parts of antirust agent;

[0031] The U-type expansion agent includes anhydrous calcium sulfoaluminate, alum stone, gypsum and surfactant; the reinforcing agent includes silica fume powder and redispersible latex powder; the described retarder includes molasses, borax, gluconic acid Sodium and aluminum sulfate; Described antifoaming agent is organosilicon, diisobutyl carbinol and distearyl ethylenediamine; Described water retaining agent comprises sodium bentonite and low viscosity hydroxypropyl methylcellulose; The The plastic expansion agent is ammonium nitrate; the rust inhibitor is sodium nitrite.

[0032] (2) Production

[0033] After weighing the 600-...

Embodiment 2

[0035] (1) Raw material and weight:

[0036] 50 parts of 600-mesh mineral filler, 30 parts of U-shaped expansion agent, 3 parts of water reducing agent, 2 parts of reinforcing agent, 0.4 part of retarder, 0.2 part of defoamer, 3 parts of water-retaining agent, and 0.02 parts of plastic expansion agent parts, 0.02 parts of antirust agent;

[0037] The U-type expansion agent includes anhydrous calcium sulfoaluminate, alum stone, gypsum and surfactant; the reinforcing agent includes silica fume powder and redispersible latex powder; the described retarder includes molasses, borax, gluconic acid Sodium and aluminum sulfate; Described defoamer is organosilicon, and distearyl ethylenediamine; Described water retention agent comprises sodium bentonite and low-viscosity hydroxypropyl methylcellulose; Described plastic expansion agent It is ammonium carbonate; the antirust agent is sodium nitrite.

[0038] (2) Production

[0039] After weighing the 600-mesh mineral filler, U-shaped ...

Embodiment 3

[0041] (1) Raw material and weight:

[0042] 55 parts of 600-mesh mineral filler, 40 parts of U-shaped expansion agent, 5 parts of water reducing agent, 4 parts of reinforcing agent, 0.8 part of retarder, 0.4 part of defoamer, 5 parts of water-retaining agent, and 0.04 parts of plastic expansion agent part, 0.04 part of antirust agent;

[0043]The U-type expansion agent includes anhydrous calcium sulfoaluminate, alum stone, gypsum and surfactant; the reinforcing agent includes silica fume powder and redispersible latex powder; the described retarder includes molasses, borax, gluconic acid Sodium and aluminum sulfate; Described defoamer is organosilicon, isooctyl alcohol, and diisobutyl carbinol; Described water retention agent comprises sodium bentonite and low-viscosity hydroxypropyl methylcellulose; Described plasticity The expansion agent is ammonium nitrate and ammonium carbonate; the antirust agent is sodium nitrite.

[0044] (2) Production

[0045] After weighing the ...

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Abstract

The invention relates to a prestressed channel grouting agent and a production method thereof, which is characterized in that it comprises the following raw materials in parts by weight: 40 to 60 parts of mineral fillers with a fineness of 600 mesh, and 20 to 50 parts of U-shaped expansion agents , 2-6 parts of water reducing agent, 1-5 parts of reinforcing agent, 0.1-1 part of retarder, 0.1-0.5 part of defoamer, 2-6 parts of water-retaining agent, 0.01-0.05 part of plastic expansion agent and rust inhibitor 0.01 to 0.05 parts. The prestressed channel grouting agent of the present invention has the characteristics of good slurry fluidity, high strength, good plasticity, and no bleeding, and can be widely used in prestressed reinforced concrete channel grouting in large-scale projects such as roads, railways, bridges, and nuclear power plants. under construction.

Description

technical field [0001] The invention belongs to the processing field of building materials, and in particular relates to a prestressed channel grouting agent which can be widely used in the grouting construction of prestressed reinforced concrete channels in large-scale projects such as roads, railways, bridges, and nuclear power plants, and a production method thereof. Background technique [0002] Highway traffic is an important part of the lifeline project of human society. As the throat project of road traffic infrastructure, road bridge plays a vital role in the road transportation system. Due to the effects of loads and environmental factors, the service performance of the bridge will decline, the structural safety and durability will be reduced, resulting in insufficient adaptability of the bridge, and even bridge destruction accidents. In the past two decades, a large number of prestressed concrete continuous beam and continuous steel bridges have been built in my co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C04B24/38C04B24/16C04B24/12C04B24/32
Inventor 覃乃舟
Owner GUANGXI NANNING BAIRUITONG SYNTHESIS BUILDING MATERIALS TECH