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- Publisher Website: 10.1016/j.conbuildmat.2017.05.082
- Scopus: eid_2-s2.0-85019079878
- WOS: WOS:000404196700038
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Article: Fracture energy-based model for average crack spacing of reinforced concrete considering size effect and concrete strength variation
Title | Fracture energy-based model for average crack spacing of reinforced concrete considering size effect and concrete strength variation |
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Authors | |
Keywords | Average crack spacing Concrete strength variation Crack width Finite element analysis Fracture energy Reinforced concrete Size effect |
Issue Date | 2017 |
Citation | Construction and Building Materials, 2017, v. 148, p. 398-410 How to Cite? |
Abstract | The average crack spacing is a key parameter for an accurate evaluation of the crack width of reinforced concrete (RC) members. According to the test results in the existing literature, both the variations of the concrete strength and the size effect are critical factors influencing the average crack spacing. However, available prediction models for the average crack spacing cannot give satisfactory results in simulating both factors. Based on the finite-element (FE) analysis and the fracture-energy criterion, a theoretical method considering the influence of concrete strength variation and size effect is first proposed. It is assumed that a micro-crack will grow into a visible crack if and only if the energy release exceeds the fracture energy of the effective cracking area. Therefore, the average crack spacing can be predicted by equating the energy release, which is obtained by the three-dimensional FE model of concrete subjected to bond stress, to the fracture energy of the effective cracking area. In addition, from the proposed model, the characteristic length of concrete is found to be the most important material parameter for average crack spacing of RC members. Subsequently, a database including 136 test specimens is established to sufficiently validate the proposed model. The influence of various key factors on the average crack spacing is discussed in detail. Finally, simplified prediction formulas for average crack spacing of RC members are proposed considering both concrete strength variation and size effect. Comparisons indicate that both the proposed theoretical model and the simplified formulas have sufficient accuracy. |
Persistent Identifier | http://hdl.handle.net/10722/326124 |
ISSN | 2023 Impact Factor: 7.4 2023 SCImago Journal Rankings: 1.999 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Wang, Jia Ji | - |
dc.contributor.author | Tao, Mu Xuan | - |
dc.contributor.author | Nie, Xin | - |
dc.date.accessioned | 2023-03-09T09:58:12Z | - |
dc.date.available | 2023-03-09T09:58:12Z | - |
dc.date.issued | 2017 | - |
dc.identifier.citation | Construction and Building Materials, 2017, v. 148, p. 398-410 | - |
dc.identifier.issn | 0950-0618 | - |
dc.identifier.uri | http://hdl.handle.net/10722/326124 | - |
dc.description.abstract | The average crack spacing is a key parameter for an accurate evaluation of the crack width of reinforced concrete (RC) members. According to the test results in the existing literature, both the variations of the concrete strength and the size effect are critical factors influencing the average crack spacing. However, available prediction models for the average crack spacing cannot give satisfactory results in simulating both factors. Based on the finite-element (FE) analysis and the fracture-energy criterion, a theoretical method considering the influence of concrete strength variation and size effect is first proposed. It is assumed that a micro-crack will grow into a visible crack if and only if the energy release exceeds the fracture energy of the effective cracking area. Therefore, the average crack spacing can be predicted by equating the energy release, which is obtained by the three-dimensional FE model of concrete subjected to bond stress, to the fracture energy of the effective cracking area. In addition, from the proposed model, the characteristic length of concrete is found to be the most important material parameter for average crack spacing of RC members. Subsequently, a database including 136 test specimens is established to sufficiently validate the proposed model. The influence of various key factors on the average crack spacing is discussed in detail. Finally, simplified prediction formulas for average crack spacing of RC members are proposed considering both concrete strength variation and size effect. Comparisons indicate that both the proposed theoretical model and the simplified formulas have sufficient accuracy. | - |
dc.language | eng | - |
dc.relation.ispartof | Construction and Building Materials | - |
dc.subject | Average crack spacing | - |
dc.subject | Concrete strength variation | - |
dc.subject | Crack width | - |
dc.subject | Finite element analysis | - |
dc.subject | Fracture energy | - |
dc.subject | Reinforced concrete | - |
dc.subject | Size effect | - |
dc.title | Fracture energy-based model for average crack spacing of reinforced concrete considering size effect and concrete strength variation | - |
dc.type | Article | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1016/j.conbuildmat.2017.05.082 | - |
dc.identifier.scopus | eid_2-s2.0-85019079878 | - |
dc.identifier.volume | 148 | - |
dc.identifier.spage | 398 | - |
dc.identifier.epage | 410 | - |
dc.identifier.isi | WOS:000404196700038 | - |