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Concrete repairing agent for bridge pavement and preparation method of concrete repairing agent

A concrete repair agent and bridge technology, applied in the field of building construction, can solve the problems of high brittleness and low elongation, achieve high strength and toughness, excellent erosion resistance, and not easy to corrode

Inactive Publication Date: 2015-01-28
河南省交通运输厅京珠高速公路新乡至郑州管理处
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Epoxy resin joint filling materials have the advantages of heat resistance, high activity, high cohesion, strong adhesion, and low shrinkage, but they have low elongation and high brittleness. Therefore, epoxy resin needs to be modified, adding Low-molecular liquid modifiers, softeners, tougheners, etc.

Method used

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  • Concrete repairing agent for bridge pavement and preparation method of concrete repairing agent

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Experimental program
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Effect test

Embodiment 1

[0014] Embodiment 1: a, 10 kilograms of boronite, 7 kilograms of forsterite, 11 kilograms of lapis lazuli, and 3 kilograms of zinc hydroxide are made into 200-mesh powder, and they are mixed uniformly to obtain active powder A; b. 2 kg of triazole, 6 kg of hydroxypropyl methylcellulose, 4 kg of cyclomethicone, and 5 kg of triisopropanolamine; add to a mixer and stir for 20 minutes at a speed of 800-1000 rpm , to get composite additive B; c, add 42 kg of water to (Aoshun cement 42.5) ordinary portland cement 75 kg; then add active powder A and stir evenly, finally add composite additive B and Jiayuan building materials JW-VII polycarboxylic acid It is 1.5 kg of high-performance water reducer, stir well and serve. The concrete repair agent for bridge pavement, 28-day high compressive strength (GB 177 cement mortar strength test method) is 69.5MPa, 28-day flexural strength ≥ 9.6MPa, wear resistance (JC / T 421 cement mortar Abrasion resistance test method) expressed as wear amount...

Embodiment 2

[0015] Embodiment 2: a, 9 kilograms of boronite, 6 kilograms of forsterite, 10 kilograms of lapis lazuli, and 3 kilograms of zinc hydroxide are made into 200-mesh powder, and they are mixed uniformly to obtain active powder A; b, methylbenzo 2 kg of triazole, 65 kg of hydroxypropyl methylcellulose, 4 kg of cyclomethicone, and 4 kg of triisopropanolamine; add to a mixer and stir for 20 minutes at a speed of 800-1000 rpm , to obtain composite additive B; c. Add 38 kg of water to 70 kg of ordinary Portland cement (Aoshun cement 42.5); then add active powder A and stir evenly, and finally add composite additive B and Jiayuan building materials JW-VII polycarboxylic acid It is 1 kg of high-performance water reducer, stir well and serve. The concrete repair agent for bridge pavement, 28-day high compressive strength (GB 177 cement mortar strength test method) is ≥68.1MPa, 28-day flexural strength ≥9.5MPa, wear resistance (JC / T 421 cement glue Sand wear resistance test method) expre...

Embodiment 3

[0016] Embodiment 3: a, 12 kilograms of boronite, 8 kilograms of forsterite, 13 kilograms of lapis lazuli, and 4 kilograms of zinc hydroxide are made into 200 mesh powders, and they are mixed uniformly to obtain active powder A; b, methylbenzo 3 kg of triazole, 7 kg of hydroxypropyl methylcellulose, 5 kg of cyclomethicone, and 5 kg of triisopropanolamine; add to a mixer and stir for 20 minutes at a speed of 800-1000 rpm , to obtain composite additive B; c. Add 48 kg of water to 70 kg of ordinary Portland cement (Aoshun cement 42.5); then add active powder A and stir evenly, and finally add composite additive B and Jiayuan building materials JW-VII polycarboxylic acid It is 2 kg of high-performance water reducer, stir well and serve. The concrete repair agent for bridge pavement, 28-day high compressive strength (GB 177 cement mortar strength test method) is ≥68.5MPa, 28-day flexural strength ≥9.5MPa, wear resistance (JC / T 421 cement glue Sand wear resistance test method) expr...

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Abstract

The invention relates to a concrete repairing agent for a bridge pavement. The concrete repairing agent is prepared from the following raw materials in parts by weight: 10 parts of szaibelyite, 7 parts of forsterite, 11 parts of celestite, 3 parts of zinc hydroxide, 75 parts of ordinary Portland cement, 1.5 parts of a polycarboxylate high-performance water reducer, 2 parts of methyl benzotriazole, 6 parts of hydroxypropyl methyl cellulose, 4 parts of annular polydimethylsiloxane, 5 parts of triisopropanolamine and 42 parts of water. The repairing agent is prepared from the polycarboxylate high-performance water reducer, 42.5 ordinary Portland cement, compound active powder which is prepared from szaibelyite, forsterite, celestite and zinc hydroxide and an additive which is prepared from methylbenzotriazole, hydroxypropyl methyl cellulose, annular polydimethylsiloxane and triisopropanolamine. The repairing agent provided by the invention has relatively high strength and toughness, and is hardly corroded, excellent in anti-scouring performance and very suitable for repairing the concrete pavement.

Description

technical field [0001] The invention belongs to the technical field of building construction, in particular to a repair agent for bridge pavement and a preparation method thereof. Background technique [0002] As one of the important forms of high-grade pavement, the cement concrete pavement of bridges has been widely used more and more. Cement concrete pavement has the advantages of high strength, durability and low maintenance cost. However, there are still many problems in terms of the use of cement concrete pavement in the country. For example, the original design theory is not perfect and the construction experience is insufficient. After several years of operation and use, some road sections have various degrees of structural damage and functional defects, which seriously affect the quality of road use. The repair mainly includes: crack treatment technology, which is usually used to deal with cracks. Filling materials include epoxy resin, polyurethane and modified po...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B41/50
Inventor 乔俊擎
Owner 河南省交通运输厅京珠高速公路新乡至郑州管理处
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