Deflection control for reinforced recycled aggregate concrete beams: Experimental database and extension of the fib Model Code 2010 model
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Recycled aggregate concrete (RAC) has emerged as a viable solution for
solving some of the environmental problems of concrete production.
However, design guidelines for deflection control of reinforced RAC
members have not yet been proposed. This study presents a
comprehensive analysis of the applicability of the fib Model Code 2010
(MC2010) deflection control model to reinforced RAC beams. Three
databases of long-term studies on natural aggregate concrete (NAC) and
RAC beams were compiled and meta-analyses of deflection predictions
by MC2010 were performed. First, the MC2010 deflection control model
was tested against a large database of long-term tests on NAC beams.
Second, a database of RAC and companion NAC beams was compiled
and initial and long-term deflections were calculated using the MC2010
model. It was shown that deflections of RAC beams are significantly
underestimated relative to NAC beams. Previously proposed
modifications for MC2010 equations for shrinkage ...strain and creep
coefficient were used, and new modifications for the modulus of elasticity
and empirical coefficient β were proposed. The improved MC2010
deflection control model on RAC beams was shown to have equal
performance to that on companion NAC beams. The proposals presented
in this paper can help engineers to more reliably perform deflection
control of reinforced RAC members.
Кључне речи:
recycled aggregate concrete / reinforced concrete beam / deflection / database / Model Code 2010Извор:
Structural Concrete, 2019, 20, 6, 2015-2029Напомена:
- This is the peer-reviewed version of the article: N. Tošić, S. Marinković, and J. de Brito, ‘Deflection control for reinforced recycled aggregate concrete beams: Experimental database and extension of the fib Model Code 2010 model’, Structural Concrete, vol. 20, no. 6, pp. 2015–2029, 2019 https://doi.org/10.1002/suco.201900035
DOI: 10.1002/suco.201900035
ISSN: 1751-7648
WoS: 000530475800015
Scopus: 2-s2.0-85069812125
URI
https://onlinelibrary.wiley.com/doi/abs/10.1002/suco.201900035https://grafar.grf.bg.ac.rs/handle/123456789/1834
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Институција/група
GraFarTY - JOUR AU - Tošic, Nikola AU - Marinković, Snežana AU - de Brito, Jorge PY - 2019 UR - https://onlinelibrary.wiley.com/doi/abs/10.1002/suco.201900035 UR - https://grafar.grf.bg.ac.rs/handle/123456789/1834 AB - Recycled aggregate concrete (RAC) has emerged as a viable solution for solving some of the environmental problems of concrete production. However, design guidelines for deflection control of reinforced RAC members have not yet been proposed. This study presents a comprehensive analysis of the applicability of the fib Model Code 2010 (MC2010) deflection control model to reinforced RAC beams. Three databases of long-term studies on natural aggregate concrete (NAC) and RAC beams were compiled and meta-analyses of deflection predictions by MC2010 were performed. First, the MC2010 deflection control model was tested against a large database of long-term tests on NAC beams. Second, a database of RAC and companion NAC beams was compiled and initial and long-term deflections were calculated using the MC2010 model. It was shown that deflections of RAC beams are significantly underestimated relative to NAC beams. Previously proposed modifications for MC2010 equations for shrinkage strain and creep coefficient were used, and new modifications for the modulus of elasticity and empirical coefficient β were proposed. The improved MC2010 deflection control model on RAC beams was shown to have equal performance to that on companion NAC beams. The proposals presented in this paper can help engineers to more reliably perform deflection control of reinforced RAC members. T2 - Structural Concrete T1 - Deflection control for reinforced recycled aggregate concrete beams: Experimental database and extension of the fib Model Code 2010 model EP - 2029 IS - 6 SP - 2015 VL - 20 DO - 10.1002/suco.201900035 ER -
@article{ author = "Tošic, Nikola and Marinković, Snežana and de Brito, Jorge", year = "2019", abstract = "Recycled aggregate concrete (RAC) has emerged as a viable solution for solving some of the environmental problems of concrete production. However, design guidelines for deflection control of reinforced RAC members have not yet been proposed. This study presents a comprehensive analysis of the applicability of the fib Model Code 2010 (MC2010) deflection control model to reinforced RAC beams. Three databases of long-term studies on natural aggregate concrete (NAC) and RAC beams were compiled and meta-analyses of deflection predictions by MC2010 were performed. First, the MC2010 deflection control model was tested against a large database of long-term tests on NAC beams. Second, a database of RAC and companion NAC beams was compiled and initial and long-term deflections were calculated using the MC2010 model. It was shown that deflections of RAC beams are significantly underestimated relative to NAC beams. Previously proposed modifications for MC2010 equations for shrinkage strain and creep coefficient were used, and new modifications for the modulus of elasticity and empirical coefficient β were proposed. The improved MC2010 deflection control model on RAC beams was shown to have equal performance to that on companion NAC beams. The proposals presented in this paper can help engineers to more reliably perform deflection control of reinforced RAC members.", journal = "Structural Concrete", title = "Deflection control for reinforced recycled aggregate concrete beams: Experimental database and extension of the fib Model Code 2010 model", pages = "2029-2015", number = "6", volume = "20", doi = "10.1002/suco.201900035" }
Tošic, N., Marinković, S.,& de Brito, J.. (2019). Deflection control for reinforced recycled aggregate concrete beams: Experimental database and extension of the fib Model Code 2010 model. in Structural Concrete, 20(6), 2015-2029. https://doi.org/10.1002/suco.201900035
Tošic N, Marinković S, de Brito J. Deflection control for reinforced recycled aggregate concrete beams: Experimental database and extension of the fib Model Code 2010 model. in Structural Concrete. 2019;20(6):2015-2029. doi:10.1002/suco.201900035 .
Tošic, Nikola, Marinković, Snežana, de Brito, Jorge, "Deflection control for reinforced recycled aggregate concrete beams: Experimental database and extension of the fib Model Code 2010 model" in Structural Concrete, 20, no. 6 (2019):2015-2029, https://doi.org/10.1002/suco.201900035 . .