Please use this identifier to cite or link to this item:
Full metadata record
DC FieldValueLanguage
dc.contributor.authorLi, Yeen_US
dc.contributor.authorPimienta, Pierreen_US
dc.contributor.authorPinoteau, Nicolasen_US
dc.contributor.authorTan, Kang Haien_US
dc.identifier.citationLi, Y., Pimienta, P., Pinoteau, N. & Tan, K. H. (2019). Effect of aggregate size and inclusion of polypropylene and steel fibers on explosive spalling and pore pressure in ultra-high-performance concrete (UHPC) at elevated temperature. Cement and Concrete Composites, 99, 62-71.
dc.description.abstractThis paper investigates the individual and combined effects of polypropylene (PP) fibers, steel fibers, and aggregate size on spalling behavior and pore pressure build-up of ultra-high-performance concrete (UHPC) exposed to elevated temperature. Simultaneous measurements of pore pressure and temperature were conducted at different depths in UHPC specimens under one-sided heating with a heating rate of 2 °C/min. Compressive, tensile, and permeability tests were performed to analyze spalling behavior. Addition of PP fibers fully prevented spalling and they are much more effective in increasing permeability than steel fibers and larger aggregates. The combined use of PP and steel fibers, and PP fibers and larger aggregates showed strong synergistic effect on increasing permeability. The higher the permeability, the lower was the maximum pore pressure measured in the samples. Two plateaus were observed from the temperature history due to vaporization of liquid water (between 115 and 125 °C inside the specimens) and release of water vapor (starting from 180 °C), respectively. The second plateau was identified as the functional temperature of PP fibers. Maximum pore pressures in spalled specimens were much lower than their tensile strengths, which could imply the contribution of hydraulic pressure in the region of moisture clog on spalling.en_US
dc.description.sponsorshipNational Research Foundation (NRF)en_US
dc.relation.ispartofCement and Concrete Compositesen_US
dc.rights© 2019 Published by Elsevier Ltd. All rights reserved.en_US
dc.subjectEngineering::Civil engineeringen_US
dc.titleEffect of aggregate size and inclusion of polypropylene and steel fibers on explosive spalling and pore pressure in ultra-high-performance concrete (UHPC) at elevated temperatureen_US
dc.typeJournal Articleen
dc.contributor.schoolSchool of Civil and Environmental Engineeringen_US
dc.subject.keywordsExplosive Spallingen_US
dc.subject.keywordsUltra-high-performance Concreteen_US
dc.description.acknowledgementThis material is based on research/work supported by the Land and Liveability National Innovation Challenge under L2 NIC Award No. L2NICCFP1-2013-4. The authors thankfully acknowledge the support received from Dr. Jihad MIAH, Dr. Romain MEGE, and Mr. Pierre-Jean DEGIOVANNI during the experiments at CSTB.en_US
item.fulltextNo Fulltext-
Appears in Collections:CEE Journal Articles

Page view(s)

Updated on Jan 26, 2022

Google ScholarTM




Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.