Results 41 to 50 of about 15,172 (317)

Modelling and evaluation of pulsed and pulse phase thermography through application of composite and metallic case studies [PDF]

open access: yes, 2014
A transient thermal finite element model has been created of the pulsed thermography (PT) and pulse phase thermography (PPT) experimental procedure.
Waugh, R., Quinn, S., Barton, J.M.
core   +1 more source

Statistical Equations to Estimate the In-situ Concrete Compressive Strength from Non-destructive Tests

open access: yesJournal of Engineering, 2018
The aim of this study is to propose reliable equations to estimate the in-situ concrete compressive strength from the non-destructive test. Three equations were proposed: the first equation considers the number of rebound hummer only, the second equation
Ahmed Faleh Al-Bayati
doaj   +1 more source

Estimation of Mechanical and Durability Properties of Self-Compacting Concrete with Fibers Using Ultrasonic Pulse Velocity [PDF]

open access: yesJournal of Rehabilitation in Civil Engineering, 2018
This study addressed the efficiency of ultrasonic pulse velocity (UPV) as a nondestructive test in concrete in estimating the mechanical (compressive and tensile strength) and durability (water absorption) properties of fiber-reinforced self-compacting ...
Masoud Fallahtabar Shiade   +1 more
doaj   +1 more source

Effect of Elevated Temperatures on Compressive Strength, Ultrasonic Pulse Velocity, and Transfer Properties of Metakaolin-Based Geopolymer Mortars

open access: yesBuildings
This study aims to investigate the impact of moderate and elevated temperatures on compressive strength, mass loss, ultrasonic pulse velocity (UPV), and gas permeability of mortars made using metakaolin (MK) or Ordinary Portland cement (OPC).
Mohamad Ezzedine El Dandachy   +3 more
semanticscholar   +1 more source

Density and Ultrasonic Pulse Velocity Investigation of Self-Compacting Carbon Fiber- Reinforced Concrete [PDF]

open access: yesEngineering and Technology Journal, 2018
comprehensive research has been carried out to understand the effect of adding carbon fibers to density and ultrasonic pulse velocity of self-compacting concrete.
G.A. Salman
doaj   +1 more source

Correlation between Uniaxial Compression Test and Ultrasonic Pulse Rate in Cement with Different Pozzolanic Additions

open access: yesApplied Sciences, 2021
This work aims to study the relationship between the compression resistance and velocity from ultrasonic pulses in samples of mortars with 25% of pozzolanic content.
Leticia Presa   +2 more
doaj   +1 more source

Investigation of Concrete Segregation by Ultrasonic Pulse Velocity

open access: yesJournal of Architectural Engineering Technology, 2017
Segregation is the separation of the components of fresh concrete or mortar, which can be caused by bad proportioning, insufficient mixing or excessive vibration. There are several tests which can be measured on hardened concrete or at the beginning of hardening. These are generally based on the percentage of the Fine aggregates between the top and the
Grini Abdelouaheb, Benouis Abdelhalim
openaire   +1 more source

Reliability of using nondestructive tests to estimate compressive strength of building stones and bricks

open access: yesAlexandria Engineering Journal, 2012
This study aims to investigate the relationships between Schmidt hardness rebound number (RN) and ultrasonic pulse velocity (UPV) versus compressive strength (fc) of stones and bricks.
Ali Abd Elhakam Aliabdo   +1 more
doaj   +1 more source

Assessment of mortar evolution in pig slurry by mechanical and ultrasonic measurements

open access: yes, 2010
This work presents the results obtained in a long-term experiment focused on the study of the evolution of cementitious materials immersed in pig slurry at real conditions.
Segura Pérez, Ignacio   +3 more
core   +2 more sources

An investigation of the effect of high temperature on the strength compression and ultrasonic pulse velocity of self-compacting concrete

open access: yesThe Journal of Engineering and Exact Sciences
One of the most significant mechanisms of deterioration in self-compacting concrete (SCC) structures over the course of their service life is exposure to elevated temperatures.
Hadji Ben Salah, Mostefa Hani
semanticscholar   +1 more source

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