Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Determination of the principal parameter of ultrasonic pulse velocity and compressive strength of lightweight concrete by using variance method
In this study, the effect of experimental parameters, namely maximum size of aggregate, curing conditions, mineral admixtures and curing time, on the ultrasonic pulse velocity and compressive strength was investigated experimentally and statistically. It was prepared 162 specimens for this investigation. Specific findings of this research include the following: It is found experimentally that the highest the compressive strength and ultrasonic pulse velocity results were obtained from the specimens with silica fume. Silica fume basically uses the calcium hydroxide crystals released from the hydration process leading to the formation of further calcium-silicate-hydrate (C-S-H) and contributing to the interfacial bond strength between aggregate particles and matrix. It is found experimentally that the highest compressive strength and ultrasonic pulse velocity values were obtained from water cured specimens followed by the sealed and air cured specimens regardless of the concrete types. This shows the role of curing methods on the early age compressive strength and ultrasonic pulse velocity of concretes. It is found experimentally that the ultrasonic pulse velocity and compressive strength results of mixes containing 4 mm aggregate downgraded with respect to mixes containing 16 mm aggregate. It is clear that the ultrasonic pulse velocity and compressive strength increased with increasing aggregate size. Based on the S/N, the optimum parameters for the compressive strength and ultrasonic pulse velocity were obtained at 16 mm maximum size of aggregate, silica fume admixture, water curing condition and 28 day curing time. Based on Anova, the most effective parameter on the ultrasonic pulse velocity and compressive strength was found as maximum size of aggregate.
Determination of the principal parameter of ultrasonic pulse velocity and compressive strength of lightweight concrete by using variance method
In this study, the effect of experimental parameters, namely maximum size of aggregate, curing conditions, mineral admixtures and curing time, on the ultrasonic pulse velocity and compressive strength was investigated experimentally and statistically. It was prepared 162 specimens for this investigation. Specific findings of this research include the following: It is found experimentally that the highest the compressive strength and ultrasonic pulse velocity results were obtained from the specimens with silica fume. Silica fume basically uses the calcium hydroxide crystals released from the hydration process leading to the formation of further calcium-silicate-hydrate (C-S-H) and contributing to the interfacial bond strength between aggregate particles and matrix. It is found experimentally that the highest compressive strength and ultrasonic pulse velocity values were obtained from water cured specimens followed by the sealed and air cured specimens regardless of the concrete types. This shows the role of curing methods on the early age compressive strength and ultrasonic pulse velocity of concretes. It is found experimentally that the ultrasonic pulse velocity and compressive strength results of mixes containing 4 mm aggregate downgraded with respect to mixes containing 16 mm aggregate. It is clear that the ultrasonic pulse velocity and compressive strength increased with increasing aggregate size. Based on the S/N, the optimum parameters for the compressive strength and ultrasonic pulse velocity were obtained at 16 mm maximum size of aggregate, silica fume admixture, water curing condition and 28 day curing time. Based on Anova, the most effective parameter on the ultrasonic pulse velocity and compressive strength was found as maximum size of aggregate.
Determination of the principal parameter of ultrasonic pulse velocity and compressive strength of lightweight concrete by using variance method
Bestimmung der Hauptparameter von Ultraschall-Impulsgeschwindigkeit und Druckfestigkeit von Leichtbeton mittels Varianzverfahren
Tanyidizi, Harun (Autor:in) / Coskun, Ahmet (Autor:in)
Russian Journal of Nondestructive Testing ; 44 ; 639-646
2008
8 Seiten, 6 Bilder, 7 Tabellen, 14 Quellen
Aufsatz (Zeitschrift)
Englisch
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