RT info:eu-repo/semantics/article
T1 Utility of Ultrasonic Pulse Velocity for Estimating the Overall Mechanical Behavior of Recycled Aggregate Self-Compacting Concrete
A1 Espinosa González, Ana Belén
A1 Revilla Cuesta, Víctor
A1 Skaf Revenga, Marta
A1 Faleschini, Flora
A1 Ortega López, Vanesa
K1 Compressive behavior
K1 Mechanical indicator
K1 Mechanical performance
K1 Multiple regression
K1 Non-destructive testing
K1 Property standardization
K1 Self-compacting concrete
K1 Statistical correlation
K1 Recycled aggregate
K1 Ultrasonic pulse velocity
K1 Ingeniería civil
K1 Civil engineering
K1 Materiales de construcción
K1 Building materials
AB Ultrasonic pulse velocity (UPV) is a non-destructive measurement technique with whichthe quality of any concrete element can be evaluated. It provides information on concrete healthand for assessing the need for repair in a straightforward manner. In this paper, the relationshipis studied between UPV readings and the mechanical behavior of self-compacting concrete (SCC)containing coarse, fine, and/or powdery RA. To do so, correlations and simple- and multipleregression relationships between compressive strength, modulus of elasticity, splitting tensile strength,flexural strength, and UPV readings of nine SCC mixes were assessed. The correlations showed thatthe relationship of UPV with any mechanical property was fundamentally monotonic. The inversesquare-root model was therefore the best-fitting simple-regression model for all the mechanicalproperties, although for bending-tensile-behavior-related properties (splitting tensile strength andflexural strength) the estimation accuracy was much lower than for compressive-behavior-relatedproperties (compressive strength and modulus of elasticity). Linear-combination multiple-regressionmodels showed that the properties related to bending-tensile behavior had a minimal influence onthe UPV value, and that their introduction resulted in a decreased estimation accuracy. Thus, themultiple-regression models with the best fits were those that linked the compressive-behavior-relatedproperties to the UPV readings. This therefore enables the estimation of the modulus of elasticitywhen the UPV and compressive strength are known with a deviation of less than ±20% in 87% of theSCC mixes reported in other studies available in the literature.
PB MDPI
YR 2023
FD 2023-01
LK http://hdl.handle.net/10259/7514
UL http://hdl.handle.net/10259/7514
LA eng
NO This research was funded by the Spanish Ministry of Universities, MICIN, AEI, EU, ERDF, and NextGenerationEU/PRTR, grant numbers PID2020-113837RB-I00, 10.13039/501100011033, and TED2021-129715B-I00; the Junta de Castilla y León (Regional Government) and ERDF, grant number UIC-231; and the University of Burgos, grant numbers SUCONS, Y135.GI.
DS Repositorio Institucional de la Universidad de Burgos
RD 05-may-2024