Prediction of concrete compression strength using ultrasonic pulse velocity

Abstract

Correlation between compressive strength and ultrasonic pulse velocity of high strength concrete incorporating chopped basalt fibre AIP Conference Proceedings 1669, 020010 (2015) Abstract. The relationship of ultrasonic stress waves transmitted along direct and indirect paths in concrete samples was investigated. Tests were conducted on plain concrete slabs from different grades of 15, 25, 30, 40 and Ultrahigh Performance Concrete that have dimensions of 750mm x 150mm x 150 mm. Direct ultrasonic pulse velocity tests were conducted between the top and the bottom surfaces of the concrete samples and indirect tests were conducted along the surface. A test procedure to determine indirect wave velocities was refined by defining the spacing of the transducers which are 50, 100, 150, 200, 250, 300, 350, 400, 450 mm. The correlation was established between direct and indirect UPV measurements via statistical analysis. From the analysis, it can be concluded that direct UPV has higher value than indirect UPV value by 16.5 % due to position of transducers. The compression strength of the concretes was studied to be compared with the direct and indirect transmission, with direct transmission method showed a good correlation with compression strength.

Relación Velocidad Del Pulso Ultrasónico- Resistencia a La Compresión Y El Contenido De Agua Libre en La Estructura De Concreto

“…En la figura # 3 se muestra el comportamiento de la VPU en función del tiempo de estufado para la dosificación 1 de baja resistencia a la compresión, que se corresponde con un nivel de porosidad mayor, lo cual se muestra en que el tiempo de secado necesario para alcanzar un valor asintótico en la dosificación 1 es de 48 horas y en la dosificación 4 es de 30 horas. El objetivo fundamental de la aplicación del método ultrasónico en el estudio del concreto es correlacionar el valor de la VPU con la resistencia a la compresión [Azreen M. N;Pauzi I.;M, Nasharuddin I.;Haniza M. M, Akasyah J.;Karsono A. D, and Yen Lei V. (2016) ; Ferreira, Almir P. and Castro, Protasio F, 2000, Quintero L,A 2014, Quintero L,A.…”

“…Un método eficaz para dar respuesta a estas necesidades es el método de la velocidad del pulso ultrasónico (VPU). [Kathleen W., et all,1999;Andej G, 1990;Malhotra VM ,2004;Azreen M. N;Pauzi I.;M, Nasharuddin I.;Haniza M. M, Akasyah J.;Karsono A. D, and Yen Lei V. (2016)] Dentro del campo de aplicación de la velocidad del pulso ultrasónico en el estudio de las propiedades del hormigón, las más divulgadas son las investigaciones que relacionan la VPU con las propiedades físico-mecánicas del hormigón sobre todo la resistencia a la compresión [Contreras A.;; Cruz Benedetti J E; Martínez Acosta L; López Ramos Á; Lakah Durango J A; Ceballos Díaz C; (2016).]…”

Prediction of characteristic strength of sustainable concrete containing mineral additives by artificial neural networks. (Dept. C)

“…3. It is recommended to build new models to decrease zero values of fly ash, silica fume, BFS, steel fiber and superplasticizer to adjust the model and agree with Jain et al[12]…”

Evaluation of residual strength with ultrasonic pulse velocity relationship for concrete exposed to high temperatures

“…In general, ultrasonic pulse velocity (UPV) tests are performed by direct measurement (opposite faces) or indirect measurement (along the surfaces). 14 According to the Azreen et al, 9 direct measurement method shows a good correlation for estimating the compressive strength of concrete using cylinder core specimen. Therefore, direct measurements were carried out using a cylindrical specimen with the dimension of 100 mm in diameter and 200 mm in height in this study.…”

“…Test results indicated that compressive strength of concrete by the both tests decreased steadily with the increase of temperature, and it can be concluded that UPV test is reliable to investigated the quick assessment of compressive strength on fire affected concrete with relatively less exposure time. Azreen et al 9 investigated UPV values with a total of 70 cube concrete samples (150 mm 3 150 mm 3 150 mm) and seven beam samples (750 mm 3 150 mm 3 150 mm) by direct and indirect paths. Direct UPV Tests were performed between the top and the bottom surfaces of the concrete specimen and indirect tests were conducted along the surface.…”