Results 11 to 20 of about 58,501 (293)

Assessment of Concrete Compressive Strength by Ultrasonic Non-Destructive Test [PDF]

open access: yesE3S Web of Conferences, 2021
This paper has carried out an experimental program to establish a relatively accurate relation between the ultrasonic pulse velocity (UPV) and the concrete compressive strength.
Said AbdulMuttalib I.   +1 more
doaj   +1 more source

A Study on Correlation between Ultrasonic Pulse Velocity Method and Coarse Aggregate for Estimating Residual Modulus of Elasticity of Concrete Exposed to High Temperatures

open access: yesApplied Sciences, 2022
In this study, the mechanical properties of normal concrete (NC) and lightweight concrete (LC) were measured upon exposure to high temperatures (20, 100, 200, 300, 500, and 700 °C).
Wonchang Kim   +3 more
doaj   +1 more source

Machine learning techniques to evaluate the ultrasonic pulse velocity of hybrid fiber-reinforced concrete modified with nano-silica

open access: yesFrontiers in Materials, 2022
It is evident that preparing materials, casting samples, curing, and testing all need time and money. The construction sector will benefit if these problems can be handled using cutting-edge techniques like machine learning. Also, a material’s ultrasonic
Kaffayatullah Khan   +5 more
doaj   +1 more source

Correlation of Schmidt Hammer Rebound Numbers with Ultrasonic Pulse Velocity and Slake Durability Index of Dolomitic Limestone of Khyber, North Pakistan

open access: yesInternational Journal of Economic and Environment Geology, 2022
The ultrasonic pulse velocity and slake durability index are the indirect techniques used widely for rock strength determination. Various experimental studies like slake durability apparatus, ultrasonic pulse velocity and ...
Naeem Abbasi   +3 more
doaj   +1 more source

Estimation of Flexural Strength of Plain Concrete from Ultrasonic Pulse Velocity

open access: yesJournal of Engineering, 2023
The aim of this study is to propose mathematical expressions for estimation of the flexural strength of plain concrete members from ultrasonic pulse velocity (UPV) measurements.
Ala’a Hussein. Alwan Al-Zuhairi
doaj   +1 more source

Assessment of Strength Development at Hardened Stage on High-Strength Concrete Using NDT

open access: yesApplied Sciences, 2020
This study proposes model formulae for predicting the strength of concrete by analyzing the relationships between the results of nondestructive testing (NDT) methods and the compressive strength of concrete specimens at the hardened stage.
Taegyu Lee, Jaehyun Lee, Hyeonggil Choi
doaj   +1 more source

Possibilities of using the ultrasonic wave transmission method to estimate initial setting time of cement paste [PDF]

open access: yes, 2008
In this paper, the applicability of the ultrasonic wave transmission method to estimate the initial setting time of an arbitrary cement paste is discussed. Ultrasonic pulse velocity measurements were fully automated and measured continuously.
Chotard   +19 more
core   +2 more sources

The use of non-destructive tests to estimate Self-compacting concrete compressive strength

open access: yesMATEC Web of Conferences, 2018
Until now, there are few studies on the effect of mineral admixtures on correlation between compressive strength and ultrasonic pulse velocity for concrete.
Djamila Boukhelkhal, Mohamed Guendouz
doaj   +2 more sources

Ultrasonic wave propagation in thermally treated concrete up to 400 ºC

open access: yesRevista IBRACON de Estruturas e Materiais, 2021
The ultrasonic pulse velocity, obtained by ultrasonic non-destructive testing, has been applied to evaluate the concrete integrity. The attenuation parameters have shown more sensitivity to damage detection in the microstructure of concrete since they ...
Ana Carolina Costa Viana   +2 more
doaj   +1 more source

Detecting Lamb waves with broad-band acousto-ultrasonic signals in composite structures [PDF]

open access: yes, 1992
Lamb waves can be produced and detected in ceramic matrix composites (CMC) and metal matrix composites (MMC) plates using the acousto-ultrasonic configuration employing broadband transducers.
Kautz, Harold E.
core   +2 more sources

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