Aggregate Type and Concrete Age Effects on Anchor Breakout Performance: Large Database and Insights

This contribution summarizes the largest available literature data collection on tensile and shear loaded anchor tests, obtained in two independent studies and performed by two different research groups. It was the objective of the two studies to investigate a possible effect that petrographically d...

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Bibliographic Details
Published inApplied sciences Vol. 14; no. 5; p. 2122
Main Authors Ninčević, Krešimir, Guillet, Thierry, Al Mansouri, Omar, Wan-Wendner, Roman
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.03.2024
Subjects
Adhesives
Age
aggregate effect
Aggregates
aging
Analysis
Cement
Concrete
cone capacity
edge breakout
fasteners
Hydration
Laboratories
Load
Mechanical properties
Medical research
Medicine, Experimental
Raw materials
Shear tests
Tension tests
Belgium
California
France
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Summary:This contribution summarizes the largest available literature data collection on tensile and shear loaded anchor tests, obtained in two independent studies and performed by two different research groups. It was the objective of the two studies to investigate a possible effect that petrographically different coarse aggregate types may have on the tensile and shear load capacity for concrete breakout failure modes. In total, seven normal-strength and four high-strength concretes were tested at two different ages. Structural tests were performed on cast-in (tensile and shear tests) and post-installed adhesive anchors (shear tests). Parallel to the structural tests, each concrete was characterized in terms of compressive and tensile strength. Finally, the combined experimental data offer novel insights into the predictive quality of available design models for concrete cone capacity in tension and edge breakout in shear with respect to a potential aggregate effect. Systematic analyses indicate only minor aggregate effects after normalization by compressive strength (less than 7% difference between normalized values). However, the study reveals potential curing and concrete age effects where a 9% increase in predicted values is shown when concrete cures longer. The predictive equations remain conservative in comparison to all the investigated properties and their validity is shown in this study.
ISSN:2076-3417
2076-3417
DOI:10.3390/app14052122