Evaluation of the fracture properties of the bond interfaces between UHTCC overlays and concrete substrates

Bing Wang; Jianguo Dai; Shi Lang Xu

doi:10.1061/41096(366)335

Evaluation of the fracture properties of the bond interfaces between UHTCC overlays and concrete substrates

Bing Wang, Jianguo Dai, Shi Lang Xu

Research output: Chapter in book / Conference proceeding › Conference article published in proceeding or book › Academic research › peer-review

4 Citations (Scopus)

Abstract

Ultra high toughness cementitious composite (UHTCC) overlays can be used for durability repair of deteriorated concrete structures since they have a strain hardening property, super ductility and multiple cracking behaviors. A key issue for this repair technology is the behavior of the interfacial bond between the UHTCC overlay and the concrete substrate. In this paper, the fracture properties of the bond interfaces between UHTCC overlays and concrete substrates were evaluated through four-point bending tests, which were conducted on a series of notched concrete beams externally bonded with UHTCC overlays. The influence of the interface configuration on the interfacial fracture properties was investigated. It was found that a multilayered bonding system with the use of prefabricated UHTCC led to better fracture performance of the bond between the UHTCC overlay and the concrete substrate in terms of both the strength and deformability as compared to a cast-in-situ one. Therefore, such a bonding system may become an ideal solution for the durability repair of aged concrete structures.

Original language	English
Title of host publication	Earth and Space 2010
Subtitle of host publication	Engineering, Science, Construction, and Operations in Challenging Environments - Proceedings of the 12th International Conference
Pages	3512-3520
Number of pages	9
DOIs	https://doi.org/10.1061/41096(366)335
Publication status	Published - 29 Nov 2010
Event	12th International Conference on Engineering, Science, Construction, and Operations in Challenging Environments - Earth and Space 2010 - Honolulu, HI, United States Duration: 14 Mar 2010 → 17 Mar 2010

Conference

Conference	12th International Conference on Engineering, Science, Construction, and Operations in Challenging Environments - Earth and Space 2010
Country/Territory	United States
City	Honolulu, HI
Period	14/03/10 → 17/03/10

Keywords

Concrete structures
Cracking
Substrates

ASJC Scopus subject areas

Building and Construction
Environmental Engineering

More information

10.1061/41096(366)335

Cite this

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abstract = "Ultra high toughness cementitious composite (UHTCC) overlays can be used for durability repair of deteriorated concrete structures since they have a strain hardening property, super ductility and multiple cracking behaviors. A key issue for this repair technology is the behavior of the interfacial bond between the UHTCC overlay and the concrete substrate. In this paper, the fracture properties of the bond interfaces between UHTCC overlays and concrete substrates were evaluated through four-point bending tests, which were conducted on a series of notched concrete beams externally bonded with UHTCC overlays. The influence of the interface configuration on the interfacial fracture properties was investigated. It was found that a multilayered bonding system with the use of prefabricated UHTCC led to better fracture performance of the bond between the UHTCC overlay and the concrete substrate in terms of both the strength and deformability as compared to a cast-in-situ one. Therefore, such a bonding system may become an ideal solution for the durability repair of aged concrete structures.",

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Wang, B, Dai, J & Xu, SL 2010, Evaluation of the fracture properties of the bond interfaces between UHTCC overlays and concrete substrates. in Earth and Space 2010: Engineering, Science, Construction, and Operations in Challenging Environments - Proceedings of the 12th International Conference. pp. 3512-3520, 12th International Conference on Engineering, Science, Construction, and Operations in Challenging Environments - Earth and Space 2010, Honolulu, HI, United States, 14/03/10. https://doi.org/10.1061/41096(366)335

Evaluation of the fracture properties of the bond interfaces between UHTCC overlays and concrete substrates. / Wang, Bing; Dai, Jianguo; Xu, Shi Lang.
Earth and Space 2010: Engineering, Science, Construction, and Operations in Challenging Environments - Proceedings of the 12th International Conference. 2010. p. 3512-3520.

Research output: Chapter in book / Conference proceeding › Conference article published in proceeding or book › Academic research › peer-review

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AB - Ultra high toughness cementitious composite (UHTCC) overlays can be used for durability repair of deteriorated concrete structures since they have a strain hardening property, super ductility and multiple cracking behaviors. A key issue for this repair technology is the behavior of the interfacial bond between the UHTCC overlay and the concrete substrate. In this paper, the fracture properties of the bond interfaces between UHTCC overlays and concrete substrates were evaluated through four-point bending tests, which were conducted on a series of notched concrete beams externally bonded with UHTCC overlays. The influence of the interface configuration on the interfacial fracture properties was investigated. It was found that a multilayered bonding system with the use of prefabricated UHTCC led to better fracture performance of the bond between the UHTCC overlay and the concrete substrate in terms of both the strength and deformability as compared to a cast-in-situ one. Therefore, such a bonding system may become an ideal solution for the durability repair of aged concrete structures.

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Evaluation of the fracture properties of the bond interfaces between UHTCC overlays and concrete substrates

Abstract

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