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Testing of concrete by rebound method: Leeb versus Schmidt hammers
Materials and Structures, 2018Hardness is considered as an important property of concrete; it can be used to estimate compressive strength of concrete in situ. The classic Schmidt rebound hammer is the most popular nondestructive method to measure concrete surface hardness, while the Leeb rebound hammer has been extensively studied in geological and metallographic fields over ...
Konstantin Kovler +2 more
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Compressive strength assessment of recycled aggregate concrete using Schmidt rebound hammer and core testing [PDF]
Construction and Building Materials, 2019 peer reviewedThe main objective of this study was to estimate the compressive strength of recycled aggregate concrete (RAC) by means of Schmidt rebound hammer and core testing.
De Brito J +2 more
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High-strength concrete – NDT with rebound hammer: influence of aggregate on test results
Nondestructive Testing and Evaluation, 2014Rebound hammer is the most frequently used non-destructive method for estimation of concrete strength. Measurement results are influenced by various factors (components and composition of concrete, humidity or age), which are well known for normal-weight concrete. High-strength concrete (HSC) differs in quality and the question is to which extent these
Jiří Brozovsky
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Rebound hammer test to estimate compressive strength of heat exposed concrete
Construction and Building Materials, 2018Abstract The residual concrete strength is required for evaluating the safety of reinforced concrete structures after fire. Based on the surface hardness of concrete, a rebound hammer test has been used to evaluate the compressive strength at the ambient temperature and after fire.
Pattamad Panedpojaman +1 more
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Construction and Building Materials, 2018
Abstract The spatial variability of the mechanical properties of concrete is an important characteristic, which plays an important role in the stochastic analysis of the concrete structures, especially in the reliability analysis. Two categories of experiments named non-destructive testing (NDT) and destructive testing (DT) are used for the ...
Taozhi Xu
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Abstract The spatial variability of the mechanical properties of concrete is an important characteristic, which plays an important role in the stochastic analysis of the concrete structures, especially in the reliability analysis. Two categories of experiments named non-destructive testing (NDT) and destructive testing (DT) are used for the ...
Taozhi Xu
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Advancing the Rebound Hammer Method: A New Concrete Test Hammer
2011The concrete test hammer patented by Proceq’s Ernst O. Schmidt at the beginning of the 1950’s is without a doubt the most widely used NDT instrument worldwide for rapid assessment of the condition of a concrete structure. Despite this fact, the validity of the method remains a hotly debated topic amongst experts in the NDT field. This is largely due to
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An Experimental Study on the Rebound Degree Tendency of Linear Hitting Test Hammer
Journal of the Korea Concrete Institute, 2005Recently, as the remodeling market gradually substitute for new construction market and safety diagnosis for reconstruction apartment become a matter of principal Interest, it is demanded that scientific diagnosis and evaluation for existing concrete structure state.
Hyo-Soo Ahn, Chee-Ho Seo
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Evaluation of rubbercrete based on ultrasonic pulse velocity and rebound hammer tests
Construction and Building Materials, 2011Abstract Several research works have been carried out to study the fresh and hardened properties of concrete containing crumb rubber (rubbercrete) as a replacement of fine aggregate. The outcomes of these studies have highlighted the advantages and disadvantages of rubbercrete compared with conventional concrete mixtures.
Bashar S. Mohammed +2 more
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Strength Evaluation of In-Situ Concrete by Rebound Hammer and Core Testing
Cement, Concrete, and Aggregates, 1994Abstract This paper describes the results of an extensive field investigation where the quality of in-place concrete flatwork was evaluated. Nondestructive testing (NDT) was carried out using ultrasonic pulse velocity and rebound hammer techniques to establish a correlation with compressive strengths of core tests.
MA Ward, BW Langan
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Rebound Hammer, Pulse Velocity, and Core Tests in Self-Consolidating Concrete
ACI Materials Journal, 2012ACI Materials Journal, V. 109, No. 2, March-April 2012. MS No. M-2010-411.R1 received June 29, 2011, and reviewed under Institute publication policies. Copyright © 2012, American Concrete Institute. All rights reserved, including the making of copies unless permission is obtained from the copyright proprietors.
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