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Protective materials for concrete structures

A technology for concrete structures and protective materials, which can be used in sea area engineering, construction, water conservancy projects, etc., and can solve problems such as loss of protective functions

Active Publication Date: 2021-07-06
CCCC WUHAN HARBOR ENG DESIGN & RES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The above anti-corrosion technical measures for the surface of concrete structures in the marine environment are all based on the fact that the surface of the concrete structure is intact and there is no cracking phenomenon, so that it can have a good protective effect against corrosion caused by corrosive media such as seawater and salt spray. However, the existing Surface anti-corrosion technical measures are generally passive protection. Once the concrete structure cracks, the above surface anti-corrosion technical measures will lose their protective function

Method used

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  • Protective materials for concrete structures
  • Protective materials for concrete structures
  • Protective materials for concrete structures

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Embodiment 1～2 and comparative example 1

[0026] 1) According to the weight ratio of the raw material components of the bottom layer, ordinary Portland cement, mineral admixture, melamine resin microcapsules, cellulose superabsorbent polymer and water are weighed respectively, and set aside. The raw materials are equipped as follows:

[0027] Ordinary Portland cement is P.O42.5 grade ordinary Portland cement of Ningbo Kehuan New Building Materials Co., Ltd., with a specific surface area of ​​360m 2 / kg, initial setting time 199min, final setting time 252min, 3d compressive strength and flexural strength were 26.9MPa and 5.7MPa, 28d compressive strength and flexural strength were 51.8MPa and 8.0MPa respectively;

[0028] The weight ratio of fly ash to slag powder in the mineral admixture is 2, and the fly ash is Class II fly ash of Ningbo Beilun Tianlu Building Materials Trading Co., Ltd., with a fineness of 23.5%, a loss on ignition of 7.9%, and a water requirement of The ratio is 104%, and the 28d activity index is ...

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Abstract

The invention discloses a concrete structure protection material, which comprises the following bottom raw material components and their weight percentages: 100 parts of Portland cement; 40-100 parts of mineral admixture; 2-6 parts of melamine resin microcapsules; 0.5 ~1.5 parts cellulosic superabsorbent polymer; 120-200 parts water. The concrete structure protection material of the present invention integrates self-repair, high water absorption and anti-corrosion functions, and can be used for pre-coating protection and anticorrosion of concrete structures in marine environments and self-repair protection and anticorrosion after concrete structures are damaged, deformed or cracked .

Description

technical field [0001] The invention relates to concrete structure protection technology, in particular to a concrete structure protection material. Background technique [0002] Additional anti-corrosion measures for the surface of concrete structures with a design protection period of less than 20 years in the marine environment mainly include: surface coating and silane impregnation. Among them, the surface coating system can be composed of a primer, an intermediate layer, a top coat, or a primer and a top coat; the primer can use epoxy resin sealer, acrylic resin sealer, etc.; the intermediate coat can use epoxy resin Paint, etc.; the surface coating can use fluorocarbon topcoat, polysiloxane topcoat, polyurethane topcoat, acrylic resin paint, chlorinated rubber paint, etc. Concrete silane impregnation generally uses isooctyl triethoxy paste silane or isobutyl triethoxy liquid silane. [0003] The above anti-corrosion technical measures for the surface of concrete stru...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C04B41/68E02B3/16
CPCC04B28/04C04B41/5024C04B41/68C04B2201/50E02B3/16C04B18/08C04B18/141C04B24/305C04B24/281C04B22/00C04B22/062C04B24/383
Inventor 徐文冰余以明吴柯刘旷怡李顺凯马晓旭
Owner CCCC WUHAN HARBOR ENG DESIGN & RES
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