Interface shear strength between SCC and carbonated concrete considering different influence parameters-Reference-Cited by-同舟云学术

Interface shear strength between SCC and carbonated concrete considering different influence parameters

Published:2023-04 Issue:8 Volume:75 Page:417-432
ISSN:0024-9831
Container-title:Magazine of Concrete Research
language:en
Short-container-title:Magazine of Concrete Research

Author:

Tang Huang¹,Peng Jianxin²,Yang Yiming³,Zhang Xuhui⁴,Zhang Jianren⁵

Affiliation:

1. Associate Professor, Hunan Engineering Research Center of Structural Safety and Disaster Prevention for Urban Underground Infrastucture, School of Civil Engineering, Hunan City University, Yiyang, Hunan, China; Key Laboratory of Bridge Engineering Safety Control by Department of Education, School of Civil Engineering, Changsha University of Science and Technology, Changsha, Hunan, China

2. Professor, Key Laboratory of Bridge Engineering Safety Control by Department of Education, School of Civil Engineering, Changsha University of Science and Technology, Changsha, Hunan, China (corresponding author: )

3. Lecturer, School of Civil Engineering, Hunan City University, Yiyang, Hunan, China

4. Associate Professor, College of Civil Engineering and Mechanics, Xiangtan University, Xiangtan, China

5. Professor, School of Civil Engineering, Changsha University of Science and Technology, Changsha, Hunan, China

Abstract

A test was carried out to study the interface shear strength between carbonated concrete substrate and self-compacting concrete (SCC) overlay. One hundred and fourteen Z-type specimens were designed and subjected to direct shear tests. The influence of four interface treatment methods, three strengthening schemes and SCC strength on interface shear strength were discussed. Two coefficients considering the influence of interface treatment method and strengthening scheme on interface shear strength between carbonated concrete and SCC were developed. The results show that interface shear strength is affected not only by SCC strength but also by the strengthening scheme for the same interface treatment method, which increases with the increase of overlay strength for the same interface treatment method and strengthening scheme. The position of groove has little influence on interface shear strength for grooved specimens. Implanting steel bar is the most effective way to improve interface shear strength. When the carbonation time is around 60 days, the interface shear strength is increased by about 17%. The theoretical interface shear strength obtained by the developed model agreed well with tested values. The mean ratio of tested interface shear strength to theoretical strength is 0.86.

Publisher

Thomas Telford Ltd.

Subject

General Materials Science,Building and Construction,Civil and Structural Engineering

Link

https://www.icevirtuallibrary.com/doi/pdf/10.1680/jmacr.22.00108

Reference38 articles.

1. Bond strength of the interface between normal concrete substrate and GUSMRC repair material overlay

2. Analysis of reinforced concrete beams strengthened using concrete jackets

3. Tension development length of reinforcing bars embedded in high-strength concrete

4. Consistent identification of the interfacial transition zone in simulated cement microstructures

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