RT Conference Proceedings
T1 VALIDATION OF ULTRASONIC PULSE TO QUALITY CONTROL OF RECYCLED AGGREGATE SELF-COMPACTING CONCRETE
A1 Revilla-Cuesta, Víctor
A1 Santamaría, Amaia
A1 Espinosa, Ana B.
A1 Chica, José A.
A1 Manso, Juan M.
A1 Ortega-López, Vanesa
A2 Blanco, Haydee
A2 Boffill, Yosbel
A2 Lombillo, Ignacio
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 University of Cantabria - Building Technology R&D Group
SN 9788409422524
SN 2386-8198
YR 2022
FD 2022
LK https://hdl.handle.net/11556/2721
UL https://hdl.handle.net/11556/2721
LA eng
NO Revilla-Cuesta , V , Santamaría , A , Espinosa , A B , Chica , J A , Manso , J M & Ortega-López , V 2022 , VALIDATION OF ULTRASONIC PULSE TO QUALITY CONTROL OF RECYCLED AGGREGATE SELF-COMPACTING CONCRETE . in H Blanco , Y Boffill & I Lombillo (eds) , REHABEND 2022 - Construction Pathology, Rehabilitation Technology and Heritage Management . REHABEND , University of Cantabria - Building Technology R&D Group , pp. 761-769 , 9th Euro-American Congress on Construction Pathology, Rehabilitation Technology and Heritage Management, REHABEND 2022 , Granada , Spain , 13/09/22 .
NO conference
NO Publisher Copyright: © 2022, University of Cantabria - Building Technology R&D Group. All rights reserved.
NO The authors acknowledge the funding of this research work to the Spanish Ministry of Universities, MICINN, AEI, EU and ERDF [FPU17/03374; PID2020-113837RB-I00; PID2021-124203OB-I00; RTI2018-097079-B-C31; 10.13039/501100011033]; JCyL and ERDF [UIC-231, BU119P17]; Basque Government [SAREN group, IT1619-22]; and the University of Burgos [SUCONS, Y135.GI].
DS TECNALIA Publications
RD 25 jul 2024