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author:

Zhang, Hongru (Zhang, Hongru.) [1] (Scholars:张鸿儒) | Zhao, Yuxi (Zhao, Yuxi.) [2]

Indexed by:

EI Scopus SCIE

Abstract:

The cracking behaviors of the reinforced recycled aggregate concrete (RAC) beams both on the beam surface and inside the beams were experimentally studied when subjected to loads coupled with chloride-induced corrosion and were compared to that of the natural aggregate concrete (NAC) beam. More transverse cracks caused by loads were observed on the surface of the RAC beam than on the NAC one and the average propagating height and width of these cracks were smaller compared to those on the NAC beam. Surface cracking caused by steel corrosion was found to initiate earlier and propagate faster on the RAC beams than on the NAC one, under loads together with chloride ingress, and the crack width was significantly larger. Inside the reinforced beams, the width of the load/corrosion-induced cracks was found to develop in certain speeds along their propagating paths: the width development models inside the beams were likely to explain the differences between the RAC and NAC beams in their cracking behaviors on the beam surfaces. It was also found that the cracking caused by loads and steel corrosion can influence each other mutually. Despite the acceptable resistance against the load-induced cracking of the RAC beams in terms of the crack width control, this paper suggests that RAC's structural use in chloride environments should be taken with great caution, considering the serious corrosion cracking damages under loads coupled with chloride ingress. (C) 2019 Elsevier Ltd. All rights reserved.

Keyword:

Beams Chloride ingress Coupled damages Cracking behavior Recycled aggregate concrete Sustained loads

Community:

  • [ 1 ] [Zhang, Hongru]Fuzhou Univ, Coll Civil Engn, Fuzhou 350108, Fujian, Peoples R China
  • [ 2 ] [Zhang, Hongru]Fuzhou Univ, Fujian Prov Univ Engn Res Ctr Adv Civil Engn Mat, Fuzhou 350108, Fujian, Peoples R China
  • [ 3 ] [Zhang, Hongru]Zhejiang Univ, Inst Struct Engn, Hangzhou 310058, Zhejiang, Peoples R China
  • [ 4 ] [Zhao, Yuxi]Zhejiang Univ, Inst Struct Engn, Hangzhou 310058, Zhejiang, Peoples R China

Reprint 's Address:

  • [Zhao, Yuxi]Zhejiang Univ, Inst Struct Engn, Hangzhou 310058, Zhejiang, Peoples R China

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Source :

CONSTRUCTION AND BUILDING MATERIALS

ISSN: 0950-0618

Year: 2019

Volume: 210

Page: 364-379

4 . 4 1 9

JCR@2019

7 . 4 0 0

JCR@2023

ESI Discipline: MATERIALS SCIENCE;

ESI HC Threshold:236

JCR Journal Grade:1

CAS Journal Grade:2

Cited Count:

WoS CC Cited Count: 29

SCOPUS Cited Count: 30

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 1

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