Method for assessing concrete structure durability life prolonged by concrete surface coating

A technology for concrete structures, concrete surfaces, applied in the direction of surface/boundary effects, weather resistance/light resistance/corrosion resistance, measuring devices, etc.

Active Publication Date: 2019-02-22
JIANGSU UNIV OF SCI & TECH +1
View PDF5 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, from the background information of life365, coating anti-corrosion measures have more elements of empirical judgment on the quantifiable indicators of prolonging the durability life.
[0003] Domestic quantitative research on the extension of the durability life of concrete structu

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for assessing concrete structure durability life prolonged by concrete surface coating
  • Method for assessing concrete structure durability life prolonged by concrete surface coating
  • Method for assessing concrete structure durability life prolonged by concrete surface coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0027] Taking the 5-year exposure data in the splash zone of Qingdao Exposure Test Station as an example, the coating is calculated to prolong the service life of the concrete structure.

[0028] Assuming that the service life of the coating itself is 20 years, the coating will fail after 20 years and lose its protective effect; the thickness of the concrete protective layer is 50mm. Within the protection period of the coating, the average chloride ion concentration on the surface of the coated concrete is calculated by the following formula. The average surface concentration of chloride ions on the surface of the coated concrete for 20 years is 0.191 (%, relative to the mass percentage of the concrete).

[0029] (1)

[0030] = 0.191 (%, relative to the mass percentage of concrete)

[0031] Within the protection period of the coating, the average diffusion coefficient of the coated concrete is 0.11×10 -12 m 2 / s.

[0032] (2)

[0033] = 0.11 (×10 -12 m 2 / s)

...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a method for assessing concrete structure durability life prolonged by a concrete surface coating. The method mainly comprises the following steps that 1, a concrete specimenis prepared, and maintenance is conducted; 2, after the specimen is subjected to surface dry, part of the specimen is covered with the concrete surface coating, and the other part of the specimen is not covered with concrete surface coatings; 3, after the coating is cured, the concrete specimen is placed in a chlorine salt environment for exposure; 4, after exposure is conducted for different ages, the specimen is taken out, chlorine ion depth distribution in a protection layer is measured, and a chlorine ion diffusion coefficient is calculated; 5, according to a Fick's second law, the concrete structure durability life prolonged by the concrete surface coating is assessed quantificationally. The method for assessing the concrete structure durability life prolonged by the concrete surfacecoating has the advantages that by means of the method, the concrete structure durability life prolonged by the concrete surface coating can be assessed quantificationally, the coating protection lifeis precisely designed, and the durability and the service safety of a concrete structure are guaranteed.

Description

technical field [0001] The invention relates to the field of durability and corrosion protection of concrete structures in marine environments, in particular to a method for quantitatively evaluating concrete surface coatings to prolong the durability life of concrete structures. Background technique [0002] Concrete surface coating can effectively isolate the intrusion of harmful media in the environment, and is the most commonly used additional anti-corrosion measure to improve concrete structures. The protective effect of coatings is the most concerned issue for engineering designers and builders. A lot of research has been done on the protective effect of coatings. The research results show that: coatings can effectively isolate the intrusion of harmful media in the environment. Durability of tall concrete structures. However, these studies are all qualitative and concluded that the coating has a good protective effect. It is not possible to quantitatively assess that...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G01N13/00G01N17/00
CPCG01N13/00G01N17/00G01N2013/003
Inventor 汤雁冰倪静姁杨海成刘志红刘刚郭浩吴百公许静田伯强苏贞
Owner JIANGSU UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap