Development of lightweight aggregate concrete with high resistance to water and chloride-ion penetration

Liu, Xuemei, Chia, K.S., & Zhang, M.H. (2010) Development of lightweight aggregate concrete with high resistance to water and chloride-ion penetration. In CONSEC '10 Proceedings of the 6th International Conference on Concrete Under Severe Conditions, Taylor & Francis Ltd, Mérida, Yucatán, Mexico, pp. 813-822.

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Abstract

This paper presents an experimental study to evaluate the effect of coarse and fine LWA in concrete on its water absorption and permeability, and resistance to chloride-ion penetration. In additions, LWC with lower unit weight of about 1300 kg/m3 but high resistance to water and chloride-ion penetration was developed and evaluated. The results indicate that the incorporation of coarse LWA in concrete increases water sorptivity and permeability slightly compared to NWC of similar w/c. The resistance of the sand-LWC to chloride-ion penetration depends on porosity of the coarse LWA. Fine LWA has more influence on the transport proper-ties of concrete than coarse LWA. Use of lightweight crushed sand <1.18 mm reduced the resistance of the LWC to water and chloride-ion penetration to some extent. With low w/cm and silica fume, low unit weight LWC (~1300 kg/m3) was produced with higher resistance to water and chloride ion penetration compared with concretes of higher unit weights.

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ID Code: 60657
Item Type: Conference Paper
Refereed: Yes
Additional URLs:
Keywords: concrete, ultra lightweight, absorption, permeability, chloride ion, migration
DOI: 10.1201/b10552-102
ISBN: 978-0-415-59316-8
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > CIVIL ENGINEERING (090500) > Construction Materials (090503)
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > CIVIL ENGINEERING (090500) > Structural Engineering (090506)
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > MARITIME ENGINEERING (091100) > Ship and Platform Structures (091105)
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > MATERIALS ENGINEERING (091200)
Divisions: Current > Schools > School of Civil Engineering & Built Environment
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2010 Please consult the authors
Deposited On: 07 Jun 2013 04:43
Last Modified: 24 Jul 2013 06:16

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