High-corrosion-resistance double-fiber co-doped modified repair mortar and preparation method thereof

A kind of corrosion-resistant and fiber technology, applied in the field of civil engineering, can solve the problems of material performance decline, engineering structure life not meeting design expectations, structural safety hazards, etc., to reduce water absorption, significant scientific research and engineering application value, improve resistance Effect of Corrosive Ability

Active Publication Date: 2022-05-06
XIAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

The rapid decline of material properties leads to the life of engineering structures far short of design expectations; at the same time, it brings huge hidden dangers to structural safety;

Method used

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  • High-corrosion-resistance double-fiber co-doped modified repair mortar and preparation method thereof
  • High-corrosion-resistance double-fiber co-doped modified repair mortar and preparation method thereof
  • High-corrosion-resistance double-fiber co-doped modified repair mortar and preparation method thereof

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Experimental program
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Effect test

Embodiment

[0031] The specific coordination is shown in the following table 1

[0032] Table 1 Mortar mix ratio

[0033]

[0034] (1) Wash and dry ordinary river sand until the moisture content is less than 0.3%, and filter it with an 80-mesh sieve; when making anti-corrosion mortar, weigh each material according to the required configuration amount, and take part of the fine sand and water for fiber dispersion ; Add about 15g of water per kilogram of sand, knead the sand and wet it evenly; (If the moisture content is too high, the fiber "agglomeration" will be aggravated; if it is too small, the "fluffing" situation will occur); Rub and disperse evenly in the sand for later use;

[0035] (2) According to each cubic meter of mortar, take a small amount of water and mix into 4.5kg of water reducing agent, 1kg of plastic retaining agent, 0.6kg of sodium methyl silicate and stir evenly for later use;

[0036] (3) For each cubic meter of mortar, pour 300kg of cement, 400kg of sand (incl...

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Abstract

The invention discloses high-corrosion-resistance double-fiber co-doped modified repair mortar. The mortar is prepared from the following materials in proportion: 400kg of cement mixed sand, 4.5 kg of a water reducing agent, 1kg of a plastic retaining agent, 1.5 kg of basalt, 0.6 kg of polypropylene, 60kg of mineral powder, 10kg of silica fume, 50kg of quartz sand, 0.6 kg of sodium methyl silicate, 6kg of inorganic aluminate and 106kg of water per 300kg. The invention further discloses a preparation method of the high-corrosion-resistance double-fiber co-doping modified repair mortar. Basalt and polypropylene fiber are added into the mortar to improve the corrosion resistance and construction performance of the mortar, sodium methyl silicate is added to generate a resin film to form a hydrophobic layer, inorganic aluminate can reduce the water absorption rate of the mortar and is waterproof and impervious, and all the materials are added to comprehensively improve the corrosion resistance of the mortar. And the concrete material is protected while being repaired.

Description

technical field [0001] The invention belongs to the technical field of civil engineering, and in particular relates to high-corrosion-resistant double-fiber remixed modified repair mortar. [0002] The invention also relates to a preparation method of high-corrosion-resistant double-fiber composite modified repair mortar. Background technique [0003] Concrete is the most widely used in civil engineering due to its good mechanical properties and low price. Due to the diversity of service environments of engineering structures, when encountering harsh environments such as ocean, saline soil, and low-temperature freeze-thaw, concrete materials are corroded by various corrosive media, mainly including acids and salts. When the service environment of concrete contains corrosion When the medium is used, the chemical components in the concrete will react with harmful substances to form soluble or loose substances, which will damage the concrete structure and reduce its strength. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B24/42C04B22/08C04B16/06C04B14/46C04B111/20C04B111/27C04B111/34
CPCC04B28/00C04B14/4643C04B16/0633C04B24/42C04B22/08C04B2201/50C04B2111/27C04B2111/20C04B2111/343C04B2111/00017C04B14/06C04B2103/302C04B2103/30C04B18/141C04B18/146Y02W30/91
Inventor 王振山徐吉宾卢俊龙李晓蕾李爱国
Owner XIAN UNIV OF TECH
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