RT info:eu-repo/semantics/article
T1 Elastic stiffness estimation of aggregate–ITZ system of concrete through matrix porosity and volumetric considerations: explanation and exemplification
A1 Revilla Cuesta, Víctor
A1 Skaf Revenga, Marta
A1 Santamaría, Amaia
A1 Romera, Jesús María
A1 Ortega López, Vanesa
K1 Elastic stiffness
K1 Aggregate-ITZ system
K1 Concrete's modulus of elasticity
K1 Limestone aggregate
K1 Electric arc furnace slag
K1 Slag-based cementitious matrix
K1 Ingeniería civil
K1 Civil engineering
AB The modulus of elasticity of a concrete depends on the elastic stifness of both the cementitious matrix and the aggregate–ITZsystem, which includes any slippage mechanisms under loading between the aggregate and the cementitious matrix within theinterfacial transition zone (ITZ). A procedure is presented in this paper to estimate the elastic stifness of an aggregate–ITZsystem within a cementitious matrix, by considering the relative volumes and the porosities of the concrete components.The method was validated by determining the elastic stifness of both the limestone–ITZ and the electric arc furnace slag(EAFS)–ITZ systems when embedded in a slag-based cementitious matrix. The greater stifness of the EAFS–ITZ systemin comparison with the natural aggregate system explained the higher strength and modulus of elasticity of the concretefollowing additions of EAFS. Moreover, having determined those parameters, the elastic moduli of concretes with a similarcementitious matrix could then be accurately estimated.
PB Springer Nature
YR 2022
FD 2022-01
LK http://hdl.handle.net/10259/7379
UL http://hdl.handle.net/10259/7379
LA eng
NO Open Access funding provided thanks to the CRUE-CSIC agreement with Springer Nature. The authors wish to express their gratitude for funding this research work to the Spanish Ministry of Universities, MICINN, AEI, EU and ERDF [PID2020-113837RBI00; PID2021-124203OB-I00; RTI2018-097079-B-C31; 10.13039/501100011033; FPU17/03374]; the Junta de Castilla y León (Regional Government) and ERDF [UIC-231, BU119P17]; the Basque Regional Government through the consolidated research group SAREN [IT1619-22]; Youth Employment Initiative (JCyL) and ESF [UBU05B_1274]; and, fnally, the University of Burgos [Y135.GI].
DS Repositorio Institucional de la Universidad de Burgos
RD 16-may-2024