Results 51 to 60 of about 1,131 (107)

Determination of the apparent porosity level of refractory concrete during a sintering process using an ultrasonic pulse velocity technique and image analysis [PDF]

Chemical Industry and Chemical Engineering Quarterly, 2010
Concrete which undergoes a thermal treatment before (pre-casted concrete blocks) and during (concrete embedded in-situ) its life-service can be applied in plants operating at high temperature and as thermal insulation. Sintering is a process which occurs
LJUBICA M. PAVLOVIĆ, ANJA M. TERZIĆ
doaj  

ANALYSIS OF THE INFLUENCE OF TRANSDUCER FREQUENCY ON THE ULTRASONIC MEASUREMENT OF CONCRETE HOMOGENEITY

Acta Polytechnica CTU Proceedings, 2019
The paper analyses the influence of transducer frequency on the determination of concrete homogeneity using the ultrasonic pulse velocity test. Transit time measurements were made on a 590×590mm concrete slab, with 110mm in thickness, in a raster of 5×5 ...
Dalibor Kocáb, Petr Misák, Barbora Jindrová, Martin Alexa, Tomáš Vymazal   +4 more
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COMPRESSIVE STRENGTH MODEL FOR CONCRETE CONTAINING POLYETHYL ENE TEREPHTHALATE PET BY USING ULTRASONIC PUL SE VELOCITY

Al-Qadisiyah Journal for Engineering Science, 2017
This research proposed a model describing the relationship between ultrasonic pulse velocity (UPV) and the compressive strength test of concrete containing PET (Polyethylene terephthalate).
Rasha Jasim, Mohammed Qasim
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Physical and mechanical characterization of concrete exposed to elevated temperatures by using ultrasonic pulse velocity

Revista Facultad de Ingeniería Universidad de Antioquia, 2015
Experimental investigations were carried out for assessing the influence of thermal loadings on the physical and mechanical properties of plain concrete after fire exposure.
Ricardo Alfredo Cruz Hernández, Luis Eduardo Zapata Orduz, Luz Amparo Quintero Ortiz, Julián Orlando Herrera Ortiz   +3 more
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Ultrasonic Characterization of Epoxy Composites Reinforced by Glass Powder

Journal of Engineering and Sustainable Development, 2013
The aim of this work is to find relationships between the selected parameters of an ultrasonic waves and the glass powder content in an epoxy composites . Epoxy composites materials with 10% , 20% , 30% , 40% , 50% and 60% glass powder volume fraction
Awad Hallosh Khidhir , Amer Yahya M. Aljarjees, Osama A. Amor   +2 more
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Optimizing Self-compacting Concretes with Recycled Plastic Aggregate: Fresh and Hardened Properties – Experimental Study and Modeling

Medžiagotyra
This study investigates the effects of incorporating recycled polyethylene terephthalate (PET) plastic aggregate into self-compacting concrete (SCC) as a partial replacement for natural aggregate.
Said ZAOUAI, Rachid RABEHI, Mohamed RABEHI   +2 more
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Assessment of Reinforced Concrete Columns Using Ultrasonic Tomography

e-Journal of Nondestructive Testing
Nondestructive testing (NDT) is increasingly being used in the construction industry for auxiliary inspection of concrete structures. One of the most used techniques is the measurement of the ultrasonic pulse velocity.
Alexandre Lorenzi, Leonardo Covatti de OLIVEIRA, Tobias Pigatto Ottoni, Lucas Alexandre Reginatto, Luciani Somensi Lorenzi   +4 more
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Experimental research on bonding mechanical performance of the interface between cementitious layers

Science and Engineering of Composite Materials
Interfaces of cementitious layers have widely existed in construction projects, and they are the weakest part of the whole building. In this article, laser scanning and ultrasonic pulse, splitting tensile, and semi-disc fracture tests were carried out to
Qin Xi, Xu Qianjun, Li Jiazheng
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Effect of Compressive Stress on Ultrasonic Pulse Velocity [PDF]

International Journal of Engineering Research and, 2020
openaire   +1 more source

Filler Content Effects on the Ultrasonic Response of Composite Materials Using the Pulse-Echo Amplitude Technique

Journal of Engineering and Sustainable Development, 2007
The aim of this study is to investigate of the capability of ultrasonic technique in assessment of the filler content effects in polymer matrix composite and to provide additional data concerning the particulars of the use ultrasonic response, velocity ...
Awad Hallosh Khidhir, Amer Yahya Al-Jarjees   +1 more
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