Results 11 to 20 of about 2,329 (284)

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   +5 more sources

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

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

Revised Rebound Hammer and Pull-Out Test Strength Curves for Fiber-Reinforced Concrete [PDF]

open access: yesAdvances in Civil Engineering, 2020
Rebound hammer tests and postinstalled pull-out tests are commonly used for evaluating the compressive strength of ordinary concrete, and the strength of concrete is estimated by strength curves.
Peng Deng   +3 more
doaj   +2 more sources

Research on the Rebound Hammer Testing of High-Strength Concrete’s Compressive Strength in the Xinjiang Region [PDF]

open access: yesBuildings, 2023
Enhancing the assessment of compressive strength and the efficiency of rebound hammers in non-destructive testing for high-strength concrete is an urgent issue in construction engineering.
Jinming Chen   +3 more
doaj   +2 more sources

Numerical Simulation and Experimental Study of Piston Rebound Energy Storage Characteristics for Nitrogen-Hydraulic Combined Impact Hammer [PDF]

open access: yesMachines
The objective of this study is to analyze the piston rebound energy storage characteristics of the nitrogen-hydraulic combined impact hammer and to investigate the manner in which the piston rebound energy is converted and utilized.
Hu Chen, Boqiang Shi, Hui Guo
doaj   +2 more sources

Repeatability of concrete rebound hardness using comprehensive statistical analysis [PDF]

open access: yesJournal of King Saud University: Engineering Sciences, 2023
The reliability of the result significantly affects the use of the Coefficient of Variation (within the test variation), which reflects the variability of the concrete properties rather than the standard deviation.
Hemraj R. Kumavat, Narayan R. Chandak
doaj   +2 more sources

Acoustic Emission Monitoring in Prestressed Concrete: A Comparative Study of Signal Attenuation from Wire Breaks and Rebound Hammer Impulses [PDF]

open access: yesApplied Sciences
Acoustic emission monitoring (AEM) has emerged as an effective technique for detecting wire breaks resulting from, e.g., stress corrosion cracking, and its application on prestressed concrete bridges is increasing.
Max Käding, Steffen Marx
doaj   +2 more sources

Rebound Hammer Test: An Investigation into Its Reliability in Applications on Concrete Structures [PDF]

open access: yesAdvances in Materials Science and Engineering, 2020
The issue of concrete strength often arises in civil engineering practice, either due to quality control of new constructions or due to the assessment of existing structures.
Antonio Brencich   +4 more
doaj   +2 more sources

Interrelated dataset of rebound numbers, ultrasonic pulse velocities and compressive strengths of drilled concrete cores from an existing structure and new fabricated concrete cubes

open access: yesData in Brief, 2023
Two test series were examined using nondestructive measuring methods by six independent laboratories before determining their compressive strength. The nondestructive test methods used were the rebound hammer and ultrasonic pulse velocity measurement ...
Daniel Gebauer   +11 more
doaj   +1 more source

Concrete density estimation by rebound hammer method [PDF]

open access: yesAIP Conference Proceedings, 2016
Concrete is the most common and cheap material for radiation shielding. Compressive strength is the main parameter checked for determining concrete quality. However, for shielding purposes density is the parameter that needs to be considered. X- and -gamma radiations are effectively absorbed by a material with high atomic number and high density such ...
Mohamad Pauzi bin Ismail   +7 more
openaire   +1 more source

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