Results 271 to 280 of about 171,478 (327)
Some of the next articles are maybe not open access.
Clast transport history influences Schmidt hammer rebound values
Earth Surface Processes and Landforms, 2020AbstractThe Schmidt hammer (SH) is widely used in geomorphology for relative‐ and calibrated‐exposure age dating surfaces and deposits within landforms. This study employs a laboratory‐based methodology to assess the effects of surface roughness, clast roundness, and clast volume on SH rebound values (R‐values) by analyzing samples from three modern ...
Telemak Olsen +2 more
openaire +1 more source
Correlation models for utilising rebound hammer technique in evaluating weathered limestone walls
Australian Journal of Structural Engineering, 2022Rebound hammer (RH) is a non-destructive testing (NDT) technique that has a significant role in the field assessment of ancient and modern buildings made of natural stones. This study aims to establish correlation models for utilising the RH technique in
Tamer Eljufout +3 more
semanticscholar +1 more source
Applying Support Vector Machines in Rebound Hammer Test
Advanced Materials Research, 2013There are several nondestructive testing techniques available to test the compressive strength of the concrete and the Rebound Hammer Test is among one of the fast and economical methods. Nevertheless, it is found that the prediction results from Rebound Hammer Test are not satisfying (over 20% mean absolute percentage error).
Yu Ren Wang +4 more
openaire +1 more source
Testing of SFRC by the Schmidt Rebound Hammer
MRS Proceedings, 1990AbstractThe rebound number, its relationship to fundamental frequency and correlations with compressive strength and erosion - abrasion resistance are discussed. Nine mix proportions were used. The w/c ratios were varied from 0.30 to 0.65. The volumetric percentage of hooked steel fibres was varied from 0.25 to 2.0 vol.% at the w/c of 0.30; at the ...
Jakob Šušteršič +2 more
openaire +1 more source
Evaluation of Schmidt Hammer Rebound Hardness Test Holders
Geotechnical Testing Journal, 1984Abstract An evaluation is made of three different holders for Schmidt hammer tests on rock core in the laboratory, including steel angle, V-notch, and semicircular groove holders. The differences are small, but it is shown that the V-notch holder gives consistently higher rebound hardness values.
KL Gunsallus, FH Kulhawy, TD O'Rourke
openaire +1 more source
Evaluation of schmidt rebound hammer testing: A critical approach
Bulletin of the International Association of Engineering Geology, 1993In the present paper, a critical approach to the evaluation of Schmidt hammer testing is attempted. Through a statistical analysis of field measurements on sandstone blocks from the archaeological site of Delphi (Greece), it was shown that there is an inconsistency in the correction method proposed by the manufacturer, in relation to the direction of ...
E. Kolaiti, Z. Papadopoulos
openaire +1 more source
Analysis of Impact Hammer Rebound to Estimate Rock Drillability
Rock Mechanics and Rock Engineering, 2000¶In this paper, the piston rebound common to both the Schmidt Impact Hammer and down-hole hammer drills has been analyzed and calculated by means of stress wave theory and the energy conservation law. A quantitative relationship between the amount of rebound of the piston and the impact resistance index, or hardness of the rock, has been established ...
X. Li +4 more
openaire +1 more source
International Journal for Research in Applied Science and Engineering Technology
This study uses the Schmidt Rebound Hammer method to evaluate precast concrete components of the Annex Building at IIT Madras in a non-destructive manner. In order to ascertain the concrete’s structural sufficiency and compliance to the designated design
Dr. Atika Ingole
semanticscholar +1 more source
This study uses the Schmidt Rebound Hammer method to evaluate precast concrete components of the Annex Building at IIT Madras in a non-destructive manner. In order to ascertain the concrete’s structural sufficiency and compliance to the designated design
Dr. Atika Ingole
semanticscholar +1 more source
Journal of Civil Engineering and Planning
Concrete compressive strength is a fundamental parameter for evaluating the performance of concrete structures. Although destructive testing using a Compression Testing Machine (CTM) is considered the most accurate method, its limited applicability to ...
Y. D. Setiyarto +1 more
semanticscholar +1 more source
Concrete compressive strength is a fundamental parameter for evaluating the performance of concrete structures. Although destructive testing using a Compression Testing Machine (CTM) is considered the most accurate method, its limited applicability to ...
Y. D. Setiyarto +1 more
semanticscholar +1 more source
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
openaire +1 more source