Results 251 to 260 of about 125,940 (281)

Advancing the Rebound Hammer Method: A New Concrete Test Hammer

2011
The 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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The development and research of the wireless digital concrete rebound hammer system

2007 International Conference on Information Acquisition, 2007
This paper introduces one kind of wireless digital concrete rebound hammer system, it consists of digital rebound body, intelligent recorder and data process software. This paper expatiates the theory of the rebound method, introduces the mechanical and circuit structure of the digital rebound body, intelligent recorder' circuit structure and control ...
Jinwu Wang, Xianda Wu, Menyou Ma, Yafan Huang, Feng Gao, Qing Zeng   +5 more
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The performance prediction of impact hammers from Schmidt hammer rebound values in Istanbul metro tunnel drivages

Tunnelling and Underground Space Technology, 2002
The construction of the first metro line in Istanbul was realized between Galata and Beyoglu by a French Engineer Henry Gavand in January 1875. Six different metro projects were submitted since then to the Turkish authorities. The construction of 7-km metro tunnels phase 1 started in 1992 and the metro line of the phase 1 is opened to the service in ...
N. Bilgin, T. Dincer, H. Copur
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A method for normalization of Schmidt hammer rebound values

International Journal of Rock Mechanics and Mining Sciences, 2004
Aydin, A, Basu, A
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ISRM Suggested method for determination of the Schmidt hammer rebound hardness: Revised version

International Journal of Rock Mechanics and Mining Sciences, 2008
With its portable, simple and affordable attributes, the Schmidt hammer (SH) is an ideal index apparatus, which underlies its increasing popularity and expanding range of applications. The SH rebound hardness value (R) is perhaps the most frequently used index in rock mechanics practice for estimating the uniaxial compressive strength (UCS) and the ...
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Hammer rebound index as an overall-mechanical-quality indicator of self-compacting concrete containing recycled concrete aggregate

Construction and Building Materials, 2022
Ana Belén Espinosa, Roberto Serrano-López, Vanesa Ortega-López   +2 more
exaly  

Soft computing based closed form equations correlating L and N-type Schmidt hammer rebound numbers of rocks

Transportation Geotechnics, 2021
Mohammadreza Koopialipoor, Navid Kardani
exaly  

Rebound hammer test to predict in-situ strength of concrete using recycled concrete aggregates, brick chips and stone chips

Construction and Building Materials, 2021
Anindya Samya Saha, Khan Mahmud Amanat
exaly  

Interaction of electrical resistivity with rebound hammer and ultrasonic velocity test

Los programas de inspección periódica de estructuras de hormigón armado son fundamentales para planificar el mantenimiento y para un mejor control del comportamiento estructural en condiciones de servicio. En este contexto, los ensayos no destructivos (END) son herramientas importantes destinadas a monitorear la integridad de las estructuras, ya que ...
Leonel, Antônio Carlos Assis, de Oliveira, Andrielli Morais de, Cascudo, Oswaldo   +2 more
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Test Method for Determination of Rock Hardness by Rebound Hammer Method

2008
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