Results 11 to 20 of about 6,338 (225)

Calibration and Reliability of the Rebound (Schmidt) Hammer Test [PDF]

open access: yesCivil Engineering and Architecture, 2013
One of the most widely spread techniques to estimate the compressive strength of concrete is the rebound hammer test, also known as Schmidt Hammer test. In spite of a large number of scientific works trying to calibrate the test, to identify the parameters affecting its results and to estimate its reliability, the original Schmidt curve is still ...
BRENCICH, ANTONIO   +3 more
openaire   +4 more sources

NDT assessment of existing concrete structures: spatial analysis of rebound hammer results recorded in-situ

open access: yesEngineering Structures and Technologies, 2015
A comparative spatial analysis of surface hardness of structural concrete is introduced. Main objective of the paper is to make a repeatability comparison of three types of the still most popular non-destructive testing devices for concrete: L-type ...
Adorján Borosnyói
doaj   +3 more sources

Performance prediction of roadheaders used in coal mines from the needle penetration index and the schmidt hammer value

open access: yesGeomechanics and Geophysics for Geo-Energy and Geo-Resources
Coal mine galleries and construction tunnels are commonly excavated using roadheaders. Estimating the performance of roadheaders is crucial for planning and cost estimation when planning tunnel or tunnel projects.
Masoud Rostami   +3 more
doaj   +2 more sources

Hammer Time: Using the Schmidt Hammer to Improve the Rockfall Activity Index (RAI) Forecasting Accuracy

open access: yes, 2023
The Schmidt hammer is a widely-used and inexpensive instrument used to estimate rock strength either in the lab or in the field. Our research team tested the accuracy and repeatability of the Schmidt hammer to estimate rock strength for six Alaskan rock ...
Darrow, Margaret
core   +2 more sources

Sedimentary Mercury Enrichments as a Tracer of Large Igneous Province Volcanism

open access: yesGeophysical Monograph Series, Page 247-262., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Lawrence M. E. Percival   +3 more
wiley  

+3 more sources

First attempt to combine terrestrial cosmogenic nuclide (10Be) and Schmidt hammer relative-age dating: Strauchon Glacier, Southern Alps, New Zealand

open access: yesOpen Geosciences, 2009
This study provides the first attempt to combine terrestrial (in situ) cosmogenic nuclide (\(^{10}\)Be) surface exposure dating with Schmidt hammer relative-age dating for the age estimation of Holocene moraines at Strauchon Glacier, Southern Alps, New ...
Winkler Stefan
doaj   +2 more sources

UCS field estimation of intact rock using the Schmidt hammer: A new empirical approach [PDF]

open access: yes, 2021
In the present work we discuss the results of a number of Schmidt hammer tests (total number of impacts N > 2,400) that were performed in situ on rock outcrops of different lithology (marl, calcareous marl, limestone, sandstone, quartz sandstone and ...
Bolla A., Paronuzzi P.
core   +1 more source

Practical Aspects of Correlation Analysis of Compressive Strength from Destructive and Non-Destructive Methods in Different Directions

open access: yesInfrastructures, 2023
The research presented here demonstrates the practical aspects of the numerical correlation of the results of the compressive strength test. The destructive test (DT) in a hydraulic press and the non-destructive test (NDT) using a Schmidt hammer in ...
Baitollah Badarloo, Petr Lehner
doaj   +1 more source

Factors influencing the performance of rebound hammer used for non-destructive testing of concrete members: A review

open access: yesCase Studies in Construction Materials, 2021
Non-destructive testing (NDT) has a vital role in finding surface hardness of concrete members. B-Proceq curve can calculate the concrete strength by providing statistical correlations between the destructive and the non-destructive strength.
Hemraj R. Kumavat   +2 more
doaj   +1 more source

Compressive Strength Prediction Model of High Strength Concrete by Destructive and Nondestructive Technique [PDF]

open access: yesE3S Web of Conferences
Concrete’s compressive strength can be tested in a laboratory before construction begins. Since concrete is a natural material and cannot be destroyed, it is not possible to determine its compressive strength through destructive testing.
Singh Shobna   +6 more
doaj   +1 more source

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