A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Influence of curing conditions on recycled aggregate concrete
This paper presents the results of a study of permeability and its influence on the durability of recycled concrete exposed to an aggressive environment. Recycled concretes with 20%, 50% and 100% in weight ofrecycled aggregate and 24 effective w/c ratios have been exposed directly to a marine environment. Control specimens cured in a humidity chamber have been also tested in order to compare the influence of the curing environment. The durability of recycled aggregate concretes exposed to aggressive conditions decreases in terms of permeability, as the results show. However, the influence of the environment on the recycled concrete also depends on the quality of the cement paste. The differences between the control and the exposed concrete are lower for low water/cement (w/c) ratios. The lower capillarity obtained in the new cement paste of the recycled concretes with low w/c ratios isolates the porosity of the recycled aggregate, increasing the durability but with a rise in the cement content. ; The authors wish to thank the Spanish Ministry of the Environment for the funding of this research. The results contained herein have been achieved under the RECNHOR Project (funded by the Spanish Ministry of Environment) and under the CLEAM Project (funded by the Spanish Centre for Industrial Technology Development, CDTI), Code 3.2-358/200 5/3-B, led by the Economic InterestGrouping CLEAM-CENIT, AIE (Acciona, Dragados, Ferrovial, FCC,Sioux, OHL and Sacyr) and SMEs Informatica 68, Quilosa and Martinez Segovia and associates.
Influence of curing conditions on recycled aggregate concrete
This paper presents the results of a study of permeability and its influence on the durability of recycled concrete exposed to an aggressive environment. Recycled concretes with 20%, 50% and 100% in weight ofrecycled aggregate and 24 effective w/c ratios have been exposed directly to a marine environment. Control specimens cured in a humidity chamber have been also tested in order to compare the influence of the curing environment. The durability of recycled aggregate concretes exposed to aggressive conditions decreases in terms of permeability, as the results show. However, the influence of the environment on the recycled concrete also depends on the quality of the cement paste. The differences between the control and the exposed concrete are lower for low water/cement (w/c) ratios. The lower capillarity obtained in the new cement paste of the recycled concretes with low w/c ratios isolates the porosity of the recycled aggregate, increasing the durability but with a rise in the cement content. ; The authors wish to thank the Spanish Ministry of the Environment for the funding of this research. The results contained herein have been achieved under the RECNHOR Project (funded by the Spanish Ministry of Environment) and under the CLEAM Project (funded by the Spanish Centre for Industrial Technology Development, CDTI), Code 3.2-358/200 5/3-B, led by the Economic InterestGrouping CLEAM-CENIT, AIE (Acciona, Dragados, Ferrovial, FCC,Sioux, OHL and Sacyr) and SMEs Informatica 68, Quilosa and Martinez Segovia and associates.
Influence of curing conditions on recycled aggregate concrete
Thomas García, Carlos (author) / Setién Marquínez, Jesús (author) / Polanco Madrazo, Juan Antonio (author) / Cimentada Hernández, Ana Isabel (author) / Medina, C. (author) / Universidad de Cantabria
2018-04-01
doi:10.1016/j.conbuildmat.2018.04.009
Construction and Building Materials- Volume 172, 30 May 2018, Pages 618-625
Article (Journal)
Electronic Resource
English
DDC:
690
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