Interfacial Tensile Bond between Substrate Concrete and Repairing Mortar under Freeze-Thaw Cycles
-
- Qian Ye
- Department of Civil Engineering and Engineering Mechanics, Columbia University, New York, NY, USA.
-
- Zhang Dawei
- College of Civil Engineering and Architecture, Zhejiang University, Hangzhou, China.
-
- Ueda Tamon
- Division of Engineering and Policy for Sustainable Environment, Hokkaido University, Sapporo, Japan.
Description
<p>Freeze-thaw cycle is one of the major damage factors of concrete patch repair. Not only the material itself but also the adhesive interface is damaged under freeze-thaw cycles (FTC). Air-entraining agent has long been used to increase the freeze-thaw resistance of concrete materials. However, the effect of air-entraining agent on the adhesive interface has not been explored. The degradation mechanism and failure mode of concrete repair system under FTC has not been studied, either.</p><p>In this study, three kinds of substrate concrete were casted and repaired by two kinds of ordinary Portland cement mortars and one kind of polymer-modified cement mortar (PCM), respectively. With up to 150 FTC, splitting tensile strength and failure modes of composite specimens were experimented. Results showed that air-entraining agent in the repairing mortar greatly influenced adhesive tensile strength under FTC. The water cement ratio and air-entraining agent of substrate concrete insignificantly affected the adhesive interface, but affects failure mode. The adhesive tensile strength of PCM-repaired composite specimens decreased faster than that of ordinary Portland cement mortar-repaired composite specimens although PCM itself showed stronger freeze-thaw resistance than ordinary mortar.</p>
Journal
-
- Journal of Advanced Concrete Technology
-
Journal of Advanced Concrete Technology 14 (8), 421-432, 2016-08-24
Japan Concrete Institute
- Tweet
Details 詳細情報について
-
- CRID
- 1390282680194967680
-
- NII Article ID
- 130005406619
-
- ISSN
- 13473913
- 13468014
-
- HANDLE
- 2115/63834
-
- Text Lang
- en
-
- Data Source
-
- JaLC
- IRDB
- Crossref
- CiNii Articles
- KAKEN
-
- Abstract License Flag
- Disallowed