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Durability in concrete : new instruments : new opportunities
conference contribution
posted on 2015-01-01, 00:00 authored by E O Garcez, Will GatesWill Gates, Frank CollinsFrank Collins, H N Bordallo, U Garbe, R Mole, D Yu, C Rehm, L Campo, L P AldridgeNew infrastructure, particularly in the developing countries, demands substantial capital investment and a loss of durability of the concrete means a waste of oportunity. Improving durability of concrete structures is a non-trivial task. The durability of concrete has been related to its ability to resist the transport of water and the potentail imporvements to concrete durability using supplementary cementitious materials (SCM) has been well documented. With access to neutron and synchrotron facilities it has become possible to; (a) measure the ability of SCM to inhibit transport of water in concrete (b) measure particle size increase of hydrating cements (with and without SCM) by ultra-small angle neutron scattering (c) use neutron tomography combined with x-ray tomography to determine the three dimensional flaws in the structure of concretes that enable water ingress into structures, and (d) determine the amount of curing or degree of hydration on the durability of SCM/OPC blends. This review will detail preliminary results on cement and concrete obtained using the newly available neutron, synchrotron and other facilities in Australia and Brazil and highlights their ability to estimate factors which determine the service life of concrete
History
Event
Congresso Brasileiro do Concreto (57th : 2015 : Bonito, Brazil)Pagination
1 - 12Publisher
IBRACONLocation
Bonito, BrazilPlace of publication
São Paulo, BrazilStart date
2015-10-27End date
2015-10-30ISSN
2175-8182Language
engPublication classification
E Conference publication; E1.1 Full written paper - refereedCopyright notice
2015, IBRACONTitle of proceedings
CBC 2015 : Proceedings of the 57th Congresso Brasileiro do ConcretoUsage metrics
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