RT info:eu-repo/semantics/conferenceObject
T1 Validation of ultrasonic pulse to quality control of recycled aggregate self-compacting concrete
A1 Revilla Cuesta, Víctor
A1 Santamaría, Amaia
A1 Espinosa González, Ana Belén
A1 Chica Páez, José Antonio
A1 Manso Villalaín, Juan Manuel
A1 Ortega López, Vanesa
K1 Recycled Concrete Aggregate
K1 Self-compacting concrete
K1 On-site quality control
K1 Ultrasonic pulse velocity
K1 Compressive strenght
K1 Hormigón-Ensayos
K1 Concrete-Testing
K1 Materiales de construcción
K1 Building materials
AB One of the main operations in any civil work is to verify that the concrete supplied and placed on site reaches the required minimum compressive strength. This verification is usually performed statistically through the preparation and testing of a large number of specimens. However, its indirect control is also useful due to its simplicity, ease of execution, and low cost. One of the most common methods to perform this operation is the measurement of the Ultrasonic Pulse Velocity (UPV) of the cast concrete, checking that its value corresponds to the necessary concrete’s strength class. This study aims to analyze whether this indirect measurement, widely used in vibrated concrete produced with natural aggregate, is also valid when large quantities of Recycled Concrete Aggregate (RCA) are added to Self-Compacting Concrete (SCC). For this purpose, six SCC mixes were produced with 100% coarse RCA and variable fine RCA contents (0%, 50%, and 100%). In addition, two different types of powder were used: limestone filler <0.063 mm and limestone fines 0/0.5 mm. The determination of the compressive strength and the UPV at 7 and 28 days in all mixes allowed demonstrating the existence of a close relationship between these two magnitudes in this type of concrete. It was even possible to develop highly accurate simple-regression models to interrelate both variables. These findings show that the use of SCC with RCA in engineering works would still allow the control of compressive strength using one of the most common traditional techniques, the ultrasonic pulse.
PB Universidad de Cantabria
SN 978-84-09-42253-1
SN 2386-8198
YR 2022
FD 2022
LK http://hdl.handle.net/10259/10247
UL http://hdl.handle.net/10259/10247
LA eng
NO Trabajo presentado en: 9th Euro-American Congress on Construction Pathology, Rehabilitation Technology and Heritage Management, REHABEND 2022. En Granada, durante los días 13-16 de septiembre de 2022
NO This research work was supported by the Spanish Ministry of Universities, MICINN, AEI, EU, ERDF and NextGenerationEU [grant numbers PID2020-113837RB-I00; 10.13039/501100011033; TED2021-129715B-I00]; the Junta de Castilla y León (Regional Government) and ERDF [grant number UIC-231]; and the University of Burgos [grant number SUCONS, Y135.GI].
DS Repositorio Institucional de la Universidad de Burgos
RD 03-mar-2025