2026-04-28T02:53:08Zhttps://riubu.ubu.es/oai/requestoai:riubu.ubu.es:10259/79992023-11-14T01:05:42Zcom_10259_6171com_10259_5086com_10259_2604col_10259_6172
Repositorio Institucional de la Universidad de Burgos
author
Fiol Olivan, Francisco
author
Revilla Cuesta, Víctor
author
Thomas, Carlos
author
Manso Villalaín, Juan Manuel
2023-11-13T08:25:39Z
2023-11-13T08:25:39Z
2023-05
0950-0618
http://hdl.handle.net/10259/7999
10.1016/j.conbuildmat.2023.131084
Marine environments are extremely challenging for the long-term durability of concrete. Prior validation of
concrete durability is therefore a prerequisite to guarantee its adequate performance under marine environmental conditions. In this study, the performance of Self-Compacting Concrete (SCC) with variable contents of
coarse Recycled Precast-Concrete Aggregate (RPCA) and two different cement contents is assessed in terms of
capillary water absorption, natural and accelerated carbonation, resistance to SO2 attack, and moist/dry performance in drinking water, marine water, and sulfate water. These tests are intended to simulate the conditions
of a marine environment. In general, the results showed that an SCC containing coarse RPCA of adequate
durability under marine conditions could be produced. On the one hand, porosity due to the presence of RPCA
increased less as the cement content was increased, which in turn reduced water absorption and SCC carbonation. For example, the effective porosity of the SCC was reduced by 25 % between day 28 and day 180,
following the addition of 100 % coarse RPCA. On the other hand, both the SO2-attack and the moist/dry tests
revealed that the weight of the SCC with RPCA underwent greater variations, due to the reactions of the cementhydration products with chlorides and sulfates, as well as salt deposition. However, SCC compressive strength
was never adversely affected, as the concrete strength increased up to 8 MPa after the drinking-water and the
sulfate-water moist/dry tests when using RPCA. According to both Fick’s and Parrot’s models, the projected
service life of all the mixes was over 100 years, regardless of the coarse RPCA content, making this sort of SCC a
feasible option for construction in marine environments.
eng
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
Recycled precast-concrete aggregate
Self-compacting concrete
Marine environment
Capillary water absorption
Carbonation
Moist/dry test
Self-compacting concrete containing coarse recycled precast-concrete aggregate and its durability in marine-environment-related tests
info:eu-repo/semantics/article
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URL
https://riubu.ubu.es/bitstream/10259/7999/1/Fiol-cbm_2023.pdf
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Fiol-cbm_2023.pdf