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The Schmidt Hammer in geomorphological research
Progress in Physical Geography, 2006The Schmidt Hammer, originally designed for testing the hardness of concrete in 1948, was first used in a geomorphological context in the 1960s. Since then the advantages and disadvantages of the device for measuring rock characteristics have become apparent, and the Schmidt Hammer has been used for an increasing range of purposes, including the study ...
Andrew Goudie
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The Schmidt hammer in rock material characterization
Engineering Geology, 2005The Schmidt hammer provides a quick and inexpensive measure of surface hardness that is widely used for estimating the mechanical properties of rock material. However, a number of issues such as hammer type, normalization of rebound values, specimen dimensions, surface smoothness, weathering and moisture content, and testing, data reduction and ...
A Aydin
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The schmidt hammer, weathering and rock surface roughness
Earth Surface Processes and Landforms, 1991AbstractMeasures of the differential relief of adjacent feldspar and pyroxene grains provide the first clear negative correlation of Schmidt hammer rebound (R‐) values and degree of weathering. However, weathering and roughness are intimately related, so the latter cannot be seen simply as a source of error limiting the utility of the Schmidt hammer ...
Danny McCarroll
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Hardness Testing of Polymer Concrete Castings by Schmidt Hammer
Materials Today: Proceedings, 2020Abstract Presented paper is focused on testing the hardness of polymer concrete castings by Schmidt hammer. The first part of the paper describes the theoretical knowledge from the material area of the issue. The experimental part of the paper is devoted to the production process of the polymer concrete castings and to the materials, machines and ...
ZAJAC Jozef +4 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.
Jorge de Brito +2 more
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Developed Schmidt hammer based on jerk measurement
Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, Civil Infrastructure, and Transportation XV, 2021The evaluation of hardened concrete quality became significantly important as a result of the continuous and increasing demand on concrete. Mechanical rebound hammer is a quick non-destructive evaluation method used to test the performance of hardened concrete onsite to assure the quality of newly casted concrete or asses the performance of old ...
Mostafa M. Geriesh +4 more
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Making the Schmidt Hammer Great Again!
2022<p>Have you ever applied the Schmidt hammer method and wondered what the R&#8209;value represents? What SI unit it would have and which material properties it actually assesses? The Schmidt rebound hammer is a device initially intended to test the curing state and strength of concrete.
Benjamin Huxol +4 more
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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
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An appreciation of the Schmidt rebound hammer
Magazine of Concrete Research, 1958Summary The Schmidt rebound hammer is described and some theoretical aspects underlying the functioning of the hammer are discussed and supported by some experimental results. The method of performing the test and its limitations under different conditions are described. Correlations with rate of wear of concrete and compressive strength on the basis
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