A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Ultrasonic pulse velocity. Compressive strength correlation of concrete made with crushed limestone aggregate
Ultrasonic pulse velocity is one of the non-destructive tests to assess construction materials that have more advantages. It has been used to determine concrete quality by using regression analysis models between compressive strength and ultrasonic pulse velocity values. However, it is not reliable without a calibration curve. For this study, 100 concrete mixtures were prepared with crushed limestone aggregate. Aggregates were characterized according to the ASTM Standards. Compressive strength ranged from 12 to 40 MPa. This range includes the usual compressive strength values obtained with regular concrete using this type of aggregate. For the mixture design, an absolute volume method was used, varying the w/c in order to obtain different values of compressive strength. The ultrasonic pulse method was applied at 28 days on the cylinders, prior to the compressive strength tests, using the 54 KHz longitudinal wave transducers placed in direct array at the ends of the cylinders. The results from the compressive strength and the ultrasonic pulse velocity tests allowed the proposal of a criterion to qualify the concrete quality, without the use of calibration curves, based on the quality of the aggregate employed.
Ultrasonic pulse velocity. Compressive strength correlation of concrete made with crushed limestone aggregate
Ultrasonic pulse velocity is one of the non-destructive tests to assess construction materials that have more advantages. It has been used to determine concrete quality by using regression analysis models between compressive strength and ultrasonic pulse velocity values. However, it is not reliable without a calibration curve. For this study, 100 concrete mixtures were prepared with crushed limestone aggregate. Aggregates were characterized according to the ASTM Standards. Compressive strength ranged from 12 to 40 MPa. This range includes the usual compressive strength values obtained with regular concrete using this type of aggregate. For the mixture design, an absolute volume method was used, varying the w/c in order to obtain different values of compressive strength. The ultrasonic pulse method was applied at 28 days on the cylinders, prior to the compressive strength tests, using the 54 KHz longitudinal wave transducers placed in direct array at the ends of the cylinders. The results from the compressive strength and the ultrasonic pulse velocity tests allowed the proposal of a criterion to qualify the concrete quality, without the use of calibration curves, based on the quality of the aggregate employed.
Ultrasonic pulse velocity. Compressive strength correlation of concrete made with crushed limestone aggregate
Ultraschallimpulsgeschwindigkeit. Korrelation von Druckfestigkeit von Beton mit gestauchtem Kalksteinzuschlag
Moreno, Eric I. (author) / Solis-Carcano, Romel (author)
2009
6 Seiten, 1 Bild, 3 Tabellen, 9 Quellen
(nicht paginiert)
Conference paper
Storage medium
English
Evaluation of concrete made with crushed limestone aggregate based on ultrasonic pulse velocity
| Online Contents | 2008
Evaluation of concrete made with crushed limestone aggregate based on ultrasonic pulse velocity
| British Library Online Contents | 2008
Evaluation of concrete made with crushed limestone aggregate based on ultrasonic pulse velocity
| Online Contents | 2008
| British Library Conference Proceedings | 2012