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author:

Li, Tan (Li, Tan.) [1] | Xiao, Jianzhuang (Xiao, Jianzhuang.) [2] | Zhang, Yamei (Zhang, Yamei.) [3] | Chen, Baochun (Chen, Baochun.) [4] (Scholars:陈宝春)

Indexed by:

EI Scopus SCIE

Abstract:

The fracture behavior of pre-cracked three-point bending specimens with different recycled coarse aggregate (RCA) replacement ratios was studied. The deformation characteristics of specimens during the fracture process were analyzed by the digital image correlation (DIC) technique, and then the cracking morphology was observed and discussed. In case of similar strength, the fracture toughness of recycled aggregate concrete (RAC) is similar to conventional concrete, but the fracture energy is lower. With the increase of RCA replacement ratios, the fracture energy decreases. The replacement ratio of RCA results in more discrete in the shape of the softening curve, and the concave features are more pronounced. By DIC analysis, deformation characteristics of the specimen are bifurcated into three stages during the fracture process. With the reduction of load to 80%, the specimen showed a rotation around a center point. At a low RCA replacement ratio, there is spalling at the precrack tip, and the crack is less smooth relative to the higher RCA replacement ratio.

Keyword:

Digital image correlation (DIC) Fracture behavior Recycled aggregate concrete (RAC) Recycled coarse aggregate (RCA) Three-point bending test

Community:

  • [ 1 ] [Li, Tan]Tongji Univ, Dept Struct Engn, Shanghai 200092, Peoples R China
  • [ 2 ] [Xiao, Jianzhuang]Tongji Univ, Dept Struct Engn, Shanghai 200092, Peoples R China
  • [ 3 ] [Zhang, Yamei]Southeast Univ, Sch Mat Sci & Engn, Nanjing 211189, Jiangsu, Peoples R China
  • [ 4 ] [Chen, Baochun]Fuzhou Univ, Coll Civil Engn, Fuzhou 350116, Fujian, Peoples R China

Reprint 's Address:

  • [Xiao, Jianzhuang]Tongji Univ, Dept Struct Engn, Shanghai 200092, Peoples R China

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Source :

CEMENT & CONCRETE COMPOSITES

ISSN: 0958-9465

Year: 2019

Volume: 104

6 . 2 5 7

JCR@2019

1 0 . 8 0 0

JCR@2023

ESI Discipline: MATERIALS SCIENCE;

ESI HC Threshold:236

JCR Journal Grade:1

CAS Journal Grade:1

Cited Count:

WoS CC Cited Count: 57

SCOPUS Cited Count: 61

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 0

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