Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Comparison of UPV and sclerometer test to predict strength of high performance concrete
Strength prediction using Sclerometer test and UPV technique are very common to the building or structural inspector. Thus, thorough knowledge of their application to estimate strength accurately is important. This paper presents a research finding that establish comparison between Sclerometer test and Ultrasonic Pulse Velocity (UPV) tests on HPC. Tests were performed to estimate strength of high performance concrete (HPC) of grade 80 using UPV direct method and Surface hardness test (Sclerometer test) techniques. Forty-five standard cube specimens were cast and tested at the age of 3, 7, 14, 28 and 56 days in both, nondestructive and destructive manner. The regression equation obtained from the destructive and nondestructive test results implied that they are best fitted in a quadratic relationship. These tests also construed that UPV method is less reliable than the Sclerometer test. Moreover, Sclerometer test results display higher coefficient of determination r2-value and lower standard error value than those found from UPV method. The results of the present research are very significant to NDT inspector as there are more constructions using concrete with higher grade. Moreover, this may guide NDT user to choose appropriate technique before assessing strength of HPC reliably.
Comparison of UPV and sclerometer test to predict strength of high performance concrete
Strength prediction using Sclerometer test and UPV technique are very common to the building or structural inspector. Thus, thorough knowledge of their application to estimate strength accurately is important. This paper presents a research finding that establish comparison between Sclerometer test and Ultrasonic Pulse Velocity (UPV) tests on HPC. Tests were performed to estimate strength of high performance concrete (HPC) of grade 80 using UPV direct method and Surface hardness test (Sclerometer test) techniques. Forty-five standard cube specimens were cast and tested at the age of 3, 7, 14, 28 and 56 days in both, nondestructive and destructive manner. The regression equation obtained from the destructive and nondestructive test results implied that they are best fitted in a quadratic relationship. These tests also construed that UPV method is less reliable than the Sclerometer test. Moreover, Sclerometer test results display higher coefficient of determination r2-value and lower standard error value than those found from UPV method. The results of the present research are very significant to NDT inspector as there are more constructions using concrete with higher grade. Moreover, this may guide NDT user to choose appropriate technique before assessing strength of HPC reliably.
Comparison of UPV and sclerometer test to predict strength of high performance concrete
Vergleich von Ultraschall Impuls-Geschwindigkeit und Ritzhärteprüfung von Hochleistungsbeton
Khan, Shibli R.M. (Autor:in) / Noorzaei, J. (Autor:in) / Kadir, M.R.A. (Autor:in) / Waleed, A.M.T. (Autor:in) / Jaafar, M.S. (Autor:in)
CINDE Journal (Canada's National NDT Magazine) ; 29 ; 14-19
2008
5 Seiten, 6 Bilder, 3 Tabellen, 14 Quellen
Aufsatz (Zeitschrift)
Englisch
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