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A concrete salt erosion transmission inhibition material in saline-alkali areas

A concrete and regional technology, applied in the field of inhibiting concrete salt erosion hazards in saline-alkali areas, can solve problems such as concrete salt erosion hazards, achieve the effects of inhibiting salt erosion, improving chemical stability and durability, and ensuring service life

Active Publication Date: 2018-08-31
JIANGSU SOBUTE NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the salt erosion hazard of concrete in the existing saline-alkali environment, effectively inhibit the transmission of salt erosion, protect the concrete from the source of the disease, and inhibit the erosion of harmful media in harsh environments, thereby significantly improving the durability of concrete

Method used

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  • A concrete salt erosion transmission inhibition material in saline-alkali areas
  • A concrete salt erosion transmission inhibition material in saline-alkali areas
  • A concrete salt erosion transmission inhibition material in saline-alkali areas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1) Preparation of epoxy-modified polysiloxane: Weigh 60g of hydrogenated bisphenol A epoxy resin and 40g of polymethylphenylsiloxane and place them in eggplant-shaped bottles, and rotatively evaporate at 80°C for 30min to remove A small amount of moisture contained in the raw material is cooled to room temperature and set aside. Add 60g of hydrogenated bisphenol A type epoxy resin and 40g of polymethylphenylsiloxane into a three-necked flask equipped with mechanical stirring, adding funnel, and reflux condenser, stir and heat up to 80°C, then add dilaurel dropwise Acetate dibutyltin, continue to heat up to 140 ° C, and stir at constant temperature for 3.5 hours to obtain a transparent viscous liquid.

[0026] 2) Preparation of polypropylmethylsilsesquioxane: Add 140ml of methyltriethoxysilane and 60ml of propyltriethoxysilane into a 1000mL three-necked bottle equipped with a stirrer, reflux condenser and thermometer , 0.0.1mol / L hydrochloric acid 20mL, isopropanol 100....

Embodiment 2

[0029] 1) Preparation of epoxy-modified polysiloxane: Weigh 60g of hydrogenated bisphenol A epoxy resin and 40g of polymethylphenylsiloxane and place them in eggplant-shaped bottles, and rotatively evaporate at 80°C for 30min to remove A small amount of moisture contained in the raw material is cooled to room temperature and set aside. Add 60g of hydrogenated bisphenol A type epoxy resin and 40g of polymethylphenylsiloxane into a three-necked flask equipped with mechanical stirring, adding funnel, and reflux condenser, stir and heat up to 80°C, then add dilaurel dropwise Acetate dibutyltin, continue to heat up to 140 ° C, and stir at constant temperature for 3.5 hours to obtain a transparent viscous liquid.

[0030] 2) Preparation of polypropylmethylsilsesquioxane: Add 140ml of methyltriethoxysilane and 65ml of propyltriethoxysilane into a 1000mL three-necked bottle equipped with a stirrer, reflux condenser and thermometer , 0.0.1mol / L hydrochloric acid 20mL, isopropanol 100....

Embodiment 3

[0033] 1) Preparation of epoxy-modified polysiloxane: Weigh 60g of hydrogenated bisphenol A epoxy resin and 40g of polymethylphenylsiloxane and place them in eggplant-shaped bottles, and rotatively evaporate at 80°C for 30min to remove A small amount of moisture contained in the raw material is cooled to room temperature and set aside. Add 60g of hydrogenated bisphenol A type epoxy resin and 40g of polymethylphenylsiloxane into a three-necked flask equipped with mechanical stirring, adding funnel, and reflux condenser, stir and heat up to 80°C, then add dilaurel dropwise Acetate dibutyltin, continue to heat up to 140 ° C, and stir at constant temperature for 3.5 hours to obtain a transparent viscous liquid.

[0034] 2) Preparation of polypropylmethylsilsesquioxane: Add 140ml of methyltriethoxysilane and 60ml of propyltriethoxysilane into a 1000mL three-necked bottle equipped with a stirrer, reflux condenser and thermometer , 0.0.1mol / L hydrochloric acid 20mL, isopropanol 100....

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Abstract

The invention discloses a saline-alkali area concrete salt erosion transmission inhibition material. The saline-alkali area concrete salt erosion transmission inhibition material comprises the following components by weight: 10-15 parts of epoxy modified polysiloxane, 15-20 parts of polypropylmethylsilsesquioxane, 15-20 parts of mercaptopropyl silane, 5-10 parts of short-fluoro chain fluorine-containing polyacrylate, 10-15 parts of nano alumina, and 20-30 parts of water. The concrete erosion resistant material provided by the invention has excellent protective performance to saline-alkali area concrete, and can effectively inhibit salt erosion and guarantee the concrete service life. The material provided by the invention utilizes the nano-filling hole blockage effect of nano alumina to reduce concrete porosity so as to improve compactness.

Description

technical field [0001] The invention relates to a functional material, which is especially suitable for suppressing the salt erosion hazard of concrete in saline-alkali areas. Background technique [0002] Due to the dry climate and large ground evaporation in saline-alkali areas, the enrichment of chloride, sulfate, and carbonate results in high alkalinity, which causes serious salt erosion to concrete projects in this area. The distribution area of ​​saline-alkali soil in my country is based on its soil According to the type and the change of climatic conditions, it is divided into four major types: coastal saline area, Huanghuaihai plain saline area, desert and desert grassland saline area, and grassland saline area. With the development of my country's railway construction, more and more railways are being built in the west and along the coast, but railway sleepers are easily damaged in the harsh saline-alkali soil environment, resulting in a decrease in the durability of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/42
CPCC04B40/0039C04B2103/60C04B24/40C04B22/06C04B24/26
Inventor 王洪松李磊田倩王瑞蒋永菁崔巩周华新
Owner JIANGSU SOBUTE NEW MATERIALS
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