6-month evaluation of concrete aging factor using chloride migration test: Effects of binder type and w/b ratio

被引：8

作者：

Wally, Gustavo Bosel ^{[1
,2
]}

Larrossa, Michele da Cruz ^{[3
]}

Pinheiro, Leandro Candido de Lemos ^{[2
]}

Real, Mauro de Vasconcellos ^{[1
,4
]}

Magalhaes, Fabio Costa ^{[2
,4
]}

机构：

[1] Univ Fed Rio Grande do Sul, Grad Program Civil Engn, BR-90035190 Porto Alegre, RS, Brazil

[2] Fed Inst Rio Grande do Sul, Struct & Bldg Mat Lab, BR-96201460 Porto Alegre, RS, Brazil

[3] Univ Fed Pelotas, Grad Program Mat Sci & Engn, BR-96010610 Pelotas, RS, Brazil

[4] Fed Univ Rio Grande, Grad Program Ocean Engn, BR-96203900 Rio Grande, RS, Brazil

来源：

MATERIALIA | 2023年 / 30卷

关键词：

Concrete durability; Chloride penetration; Aging factor; FLY-ASH; DURABILITY; DIFFUSION; RESISTIVITY; CEMENT; METAKAOLIN; SLAG;

D O I：

10.1016/j.mtla.2023.101841

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Service life modeling is a relevant tool in the design of durable concrete structures. Among the service life prediction models, many introduce the so-called concrete aging factor, which aims to express the reduction of concrete diffusivity over time. This paper presents an experimental assessment of the concrete aging factor up to the age of 6 months based on the chloride migration coefficient. Several concretes produced with different binder types, mineral additions, and water/binder ratios were evaluated. Concrete compressive strength and surface electrical resistivity are also addressed. The results indicate a strong influence of the type of binder and the use of mineral additions on the aging factor of the concrete - especially in concretes with water/binder ratio = 0.45. The inclusion of the aging factor in service life prediction models and the extrapolation of data obtained at the first ages of concrete for long-term analysis are discussed.

引用

页数：8

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