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High polymer duct grouting material and preparation method thereof

A technology of pore grouting and polymer, which is applied in the field of pore grouting, polymer pore compressing and its preparation, which can solve the problems of not being able to meet the requirements of new specifications, and achieve good volume stability and environmental adaptability. Strong, easy to use effect

Pending Publication Date: 2022-07-22
河南拓通交通科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the grouting agents commonly used in the market cannot meet the requirements of the new standard, so it is of great practical significance to prepare grouting agents that meet the technical requirements of the new bridge regulation

Method used

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  • High polymer duct grouting material and preparation method thereof

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Comparison scheme
Effect test

Embodiment 1

[0037] Example 1: A polymer pore-pressing slurry, calculated in parts by mass, comprising the following components: 70-90 parts of Portland cement, 5-25 parts of active mineral admixture, and 10-30 parts of compound agitator parts, 2-5 parts of air-entraining water-reducing agent, 3-5 parts of polycarboxylate superplasticizer, 20-35 parts of fiber expansion agent, 0.2-0.5 parts of defoamer, 0.03-0.08 parts of anti-settling agent, anti-freezing agent 0.2~0.5 part, carbon fiber 0.5~1.0 part;

[0038] Among them, Portland cement is Portland cement with a grade of 42.5 or above;

[0039] Among them, the active mineral admixture includes the following raw materials in parts by weight: 20-40 parts of granulated blast furnace slag, 2-10 parts of anhydrite, and 0.3-0.5 part of triethanolamine phosphate; preparation method of active mineral admixture The following steps are: crushing the granulated blast furnace slag to 0.5-5 mm to obtain fine material; mixing the obtained fine materi...

Embodiment 2

[0047] Embodiment 2: the preparation method of the high polymer pore pressure slurry in the embodiment 1, comprising the following steps:

[0048] (1) Grinding of cementitious material: Portland cement, active mineral admixture and composite agitator are weighed and mixed by weight to obtain a mixture A, and the mixture A is ground to a specific surface area of ​​500~ 600㎡ / kg, after homogenization, Cementitious Material B was obtained;

[0049] (2) After weighing the air-entraining water-reducing agent, polycarboxylate superplasticizer, fiber expansion agent, defoaming agent, anti-settling agent, anti-freezing agent and carbon fiber by weight, put it into a mortar mixer for stirring Mixing to obtain mixture C, wherein the stirring speed is 1000r / min;

[0050] (3) Add the cementitious material B and the mixed material C into the mixing mill in proportion to fully mix, and the finished product obtained after the homogenization treatment is put into the finished product packagin...

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Abstract

The invention discloses a high polymer duct grouting material and a preparation method thereof, and relates to the field of civil engineering construction. Comprising the following components in parts by weight: 70-90 parts of Portland cement, 5-25 parts of an active mineral admixture, 10-30 parts of a composite stirred material, 2-5 parts of an air entraining and water reducing agent, 3-5 parts of a polycarboxylate superplasticizer, 20-35 parts of a fiber expanding agent, 0.2-0.5 part of a defoaming agent, 0.03-0.08 part of an anti-settling agent, 0.2-0.5 part of an anti-freezing agent and 0.5-1.0 part of carbon fibers, the grouting material provided by the invention has proper initial setting time and final setting time, the strength and fluidity of the slurry can be greatly improved, the segregation and bleeding of the slurry are reduced, and the later shrinkage is reduced; and the binding power between the slurry and the reinforcing steel bar and the duct wall can be improved, the corrosion of the reinforcing steel bar is prevented, the compressive strength and the breaking strength are high, the performance is stable, the use is simple and convenient, and the mortar can be widely applied to the construction of roads, bridges and culverts.

Description

technical field [0001] The invention relates to the field of civil engineering construction, relates to a pore pressure slurry, in particular to a polymer pore pressure slurry and a preparation method thereof. Background technique [0002] In order to further improve the quality of highway bridges in my country, the new version of "Technical Specifications for Construction of Highway Bridges and Culverts" (JTG / TF50-2011) puts forward high requirements for the pressure slurry, such as: (1) better fluidity; ( 2) Low bleeding rate, no segregation, no settlement; (3) Appropriate swelling degree; (4) Appropriate setting time; (5) Certain flexural and compressive strength, etc. However, most of the grouting agents commonly used in the market cannot meet the requirements of the new specification, so it is of great practical significance to make grouting agents that meet the technical requirements of the new bridge specification. SUMMARY OF THE INVENTION [0003] In view of the ab...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B111/27
CPCC04B28/04C04B2201/50C04B2111/00724C04B2111/00706C04B2111/27C04B2111/00017C04B18/141C04B22/143C04B24/003C04B22/064C04B18/08C04B24/34C04B24/32C04B24/16C04B24/20C04B24/42C04B24/383C04B22/085C04B22/124C04B24/126C04B14/386C04B2103/0068C04B2103/302
Inventor 贾耀飞任海浩田豪然贾耀雷贾向磊韩东东
Owner 河南拓通交通科技有限公司