Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/160671
Title: A generic model to determine crack spacing of short and randomly oriented polymeric fiber-reinforced strain-hardening cementitious composites (SHCC)
Authors: Li, Junxia
Weng, Jian
Chen, Zhitao
Yang, En-Hua
Keywords: Engineering::Civil engineering
Issue Date: 2021
Source: Li, J., Weng, J., Chen, Z. & Yang, E. (2021). A generic model to determine crack spacing of short and randomly oriented polymeric fiber-reinforced strain-hardening cementitious composites (SHCC). Cement and Concrete Composites, 118, 103919-. https://dx.doi.org/10.1016/j.cemconcomp.2020.103919
Journal: Cement and Concrete Composites
Abstract: Crack spacing is an important property governing the tensile strain capacity of strain-hardening cementitious composites (SHCC). This paper presents a generic model to determine the crack spacing of short and randomly oriented polymeric fiber-reinforced SHCCs, which takes into account of the fiber/matrix interface chemical bond, the fiber/matrix interface slip-hardening behavior, and two-way fiber pullout. The validity of the proposed model is assessed by comparing the crack spacing calculated from the present model with that observed from the direct tensile test. Increased chemical bond leads to reduced crack spacing at small crack opening due to increased fiber pullout force during fiber debonding. At large crack opening, however, increased chemical bond can lead to increased crack spacing due to premature fiber rupture. Furthermore, increased slip-hardening coefficient results in reduced crack spacing due to increased fiber pullout force during fiber slippage. Variation of the slip-hardening coefficient leads to more significant change of the crack spacing than that of the chemical bond. The proposed generic model can be used to determine the crack spacing of SHCC, and also to guide the design of SHCC with targeted multiple cracking pattern.
URI: https://hdl.handle.net/10356/160671
ISSN: 0958-9465
DOI: 10.1016/j.cemconcomp.2020.103919
Schools: School of Civil and Environmental Engineering 
Interdisciplinary Graduate School (IGS) 
Organisations: Building and Construction Authority Academy
Research Centres: Nanyang Environment and Water Research Institute 
Residues and Resource Reclamation Centre 
Rights: © 2021 Elsevier Ltd. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:CEE Journal Articles
IGS Journal Articles
NEWRI Journal Articles

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