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Initial cracking strength and initial fracture toughness from 3-p-b and WS concrete specimens
  • +4
  • Xianhua Yao,
  • Lielie Li,
  • Junfeng Guan,
  • Min Zhang,
  • Zepeng Liu,
  • Ruicong Han,
  • Shuanghua He
Xianhua Yao
North China University of Water Resources and Electric Power

Corresponding Author:yaoxianhua@ncwu.edu.cn

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Lielie Li
North-China University of Water Conservancy and Electric Power
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Junfeng Guan
North China University of Water Resources and Electric Power
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Min Zhang
North China University of Water Resources and Electric Power
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Zepeng Liu
North China University of Water Resources and Electric Power
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Ruicong Han
North China University of Water Resources and Electric Power
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Shuanghua He
North China University of Water Resources and Electric Power
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Abstract

A concept of initial cracking strength of concrete is elaborated in this study. A fracture model and associated methods for determining independent initial cracking strength and initial fracture toughness by using the three-point-bending (3-p-b) and wedge splitting (WS) concrete specimens are present. The initial cracking strength and initial fracture toughness can be simultaneously determined using a curve-fitting method from the proposed fracture model. All of the initial fracture curves can be obtained using the determined concrete materials. The initial loads of the 3-p-b and WS specimens can be predicted on the basis of the curves with ±15% ranges. Furthermore, analytical functions are used to obtain and determine the initial cracking strength and the initial fracture toughness of concretes directly. The determined values with ±15% ranges cover the most of initial loads of the 3-p-b and WS specimens.
06 Jul 2020Submitted to Fatigue & Fracture of Engineering Materials & Structures
11 Jul 2020Submission Checks Completed
11 Jul 2020Assigned to Editor
14 Jul 2020Reviewer(s) Assigned
01 Sep 2020Review(s) Completed, Editorial Evaluation Pending
05 Sep 2020Editorial Decision: Revise Major
11 Oct 20201st Revision Received
14 Oct 2020Submission Checks Completed
14 Oct 2020Assigned to Editor
23 Oct 2020Reviewer(s) Assigned
27 Oct 2020Review(s) Completed, Editorial Evaluation Pending
28 Oct 2020Editorial Decision: Accept