Journal
CONSTRUCTION AND BUILDING MATERIALS
Volume 363, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.conbuildmat.2022.129820
Keywords
Concrete-to-concrete; Bond strength; Surface preparation; Bond testing methods
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This paper provides an extensive review on the bond strength between concrete layers, discussing major factors affecting the bond strength and presenting common test methods and code recommendations.
In this paper, an extensive review for concrete-to-concrete bond strength was conducted. Several major factors that affect the bond strength between concrete layers such as differential stiffness, shrinkage and age, concrete type, surface preparation, and variation of compressive strength between layers were considered in the discussion. In addition, the paper presents some of the most common tests performed to measure the bond strength of a sample, such as slant shear test, direct shear test, split tension test, and pull off test. Additionally, several codes recommendations for concrete-to-concrete bond in structural applications were presented and discussed.
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