Abstract
Concrete anchors are extensively used in the construction industry. Their applications range from erecting permanent objects such as sign poles, direction signs, lighting poles, and so on, to temporary support structures. Several destructive testing equipment types exist in the industry that can be used to evaluate the load-carrying capacity of concrete anchors. However, no nondestructive testing method has been proposed that can estimate their load-carrying capacity. This study develops a new relationship between the pull-out load-carrying capacity, , of concrete anchors and Schmidt hammer rebound value, . It was observed from experimentation that the load-carrying capacity of the concrete anchors depends on the embedment length, anchor diameter, concrete strength, and anchor alignment. The effect of anchor alignment was also observed during experimentation, and anchors with ill alignment of more than 5% can lead to lower load-carrying capacity. In addition, it is also possible to identify the ill-aligned concrete anchor and anchor bolt installed in poor quality concrete using the test results. A new type of anchor cage is also developed and presented in the research work that can be used to conduct the pull-out testing using the universal testing machine, eradicating the need for separate pull-out testing devices. The 8-, 10-, and 12-mm diameter concrete anchors were studied, keeping constant the embedment length and concrete strength. The pull-out load strength versus rebound value relationship for each diameter anchor is presented with a co-relationship of more than 90%.
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Acknowledgments
The authors are grateful to the deanship of scientific research (DSR) at the University of Dammam (UoD), Kingdom of Saudi Arabia, for the financial support. The publication is part of the project funded by the DSR, UoD, under the Project ID 2014043.
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Information & Authors
Information
Published In
Journal of Construction Engineering and Management
Volume 142 • Issue 5 • May 2016
Copyright
© 2015 American Society of Civil Engineers.
History
Received: Jun 23, 2015
Accepted: Oct 12, 2015
Published online: Dec 23, 2015
Published in print: May 1, 2016
Discussion open until: May 23, 2016
ASCE Technical Topics:
- Anchors
- Concrete
- Engineering fundamentals
- Engineering materials (by type)
- Equipment and machinery
- Field tests
- Foundation design
- Foundations
- Geomechanics
- Geotechnical engineering
- Load bearing capacity
- Load tests
- Material mechanics
- Material properties
- Material tests
- Materials engineering
- Nondestructive tests
- Pullout behavior
- Soil dynamics
- Soil mechanics
- Strength of materials
- Tests (by type)
- Uplifting behavior
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