TY - GEN
T1 - Self-Compacting Concrete with Recycled Concrete Aggregate
T2 - 15th International Conference on Durability of Building Materials and Components, DBMC 2020
AU - Revilla-Cuest, Víctor
AU - Skaf, Marta
AU - García-Llon, Aratz
AU - Piñero, Ignacio
AU - Manso, Juan M.
AU - Ortega-Lópe, Vanesa
N1 - Publisher Copyright:
© The authors.
PY - 2020
Y1 - 2020
N2 - The use of waste in civil-engineering products, such as concrete and asphalt mixes, is a very effective strategy for reducing high consumption levels of Natural Aggregates (NA) in the construction sector. In this research, rejected precast concrete elements of high compressive strength are studied, following their crushing for use as a high quality Recycled Concrete Aggregate (RCA) in the manufacture of Self-Compacting Concrete (SCC). High volumes of this waste stream are employed in the mixture, completely replacing the coarse fraction of the natural aggregate (100% replacement rate) and half of the fine fraction (50% replacement rate). Once hardened, samples of the recycled SCC are exposed to several aggressive external agents, in order to evaluate their performance and durability in aggressive environments. Behavioral tests on the concrete in the presence of the most frequent aggressive agents in the surrounding environment demonstrated that the SCC containing RCA was resistant to freeze/thaw and moist/dry cycles, and sulphate attack, according to the results obtained in 4, 3 and 2 samples respectively, and of sufficient durability for use in structural concrete components.
AB - The use of waste in civil-engineering products, such as concrete and asphalt mixes, is a very effective strategy for reducing high consumption levels of Natural Aggregates (NA) in the construction sector. In this research, rejected precast concrete elements of high compressive strength are studied, following their crushing for use as a high quality Recycled Concrete Aggregate (RCA) in the manufacture of Self-Compacting Concrete (SCC). High volumes of this waste stream are employed in the mixture, completely replacing the coarse fraction of the natural aggregate (100% replacement rate) and half of the fine fraction (50% replacement rate). Once hardened, samples of the recycled SCC are exposed to several aggressive external agents, in order to evaluate their performance and durability in aggressive environments. Behavioral tests on the concrete in the presence of the most frequent aggressive agents in the surrounding environment demonstrated that the SCC containing RCA was resistant to freeze/thaw and moist/dry cycles, and sulphate attack, according to the results obtained in 4, 3 and 2 samples respectively, and of sufficient durability for use in structural concrete components.
KW - Freeze/Thaw test
KW - Moist/Dry test
KW - Recycled concrete aggregate
KW - Self-compacting concrete
KW - Sulphate attack test
UR - http://www.scopus.com/inward/record.url?scp=85125813868&partnerID=8YFLogxK
U2 - 10.23967/dbmc.2020.125
DO - 10.23967/dbmc.2020.125
M3 - Conference contribution
AN - SCOPUS:85125813868
T3 - Current Topics and Trends on Durability of Building Materials and Components - Proceedings of the 15th International Conference on Durability of Building Materials and Components, DBMC 2020
SP - 1095
EP - 1102
BT - Current Topics and Trends on Durability of Building Materials and Components - Proceedings of the 15th International Conference on Durability of Building Materials and Components, DBMC 2020
A2 - Serrat, Carles
A2 - Casas, Joan Ramon
A2 - Gibert i Armengol, Vicente
PB - International Center for Numerical Methods in Engineering
Y2 - 20 October 2020 through 23 October 2020
ER -