Article thumbnail
Location of Repository

Effect of cumulative lightweight aggregate volume in concrete on its resistance to chloride-ion penetration

By X. M. Liu and M. H. Zhang

Abstract

This paper presents an experimental study on the resistance of lightweight aggregate concretes to chloride-ion penetration in comparison to that of normal weight concrete of similar w/c. Salt ponding test (based on AASHTO T 259), rapid chloride permeability test (ASTM C 1202) and rapid migration test (NT Build 492) were carried out to evaluate the concrete resistance to the chloride-ion penetration. Results indicate that in general the resistance of the LWAC to the chloride-ion penetration was in the same order as that of NWAC of similar w/c. However, the increase in cumulative LWA volume and the incorporation of finer LWA particles led to higher charge passed, migration coefficient, and diffusion coefficient. Since the LWACs had lower 28-day compressive strength compared with that of the NWAC of similar w/c, the LWACs may have equal or better resistance to the chloride-ion penetration compared with the NWAC of equivalent strength. The trend of the resistance of concretes to chloride-ion penetration determined by the three test methods was reasonably consistent although there were some discrepancies due to different test methods

Topics: 090599 Civil Engineering not elsewhere classified, concrete, lightweight aggregate, chloride ion, ponding, internal curing, migration, permeability
Publisher: Taylor and Francis Group
Year: 2008
DOI identifier: 10.1201/9780203883440
OAI identifier: oai:eprints.qut.edu.au:60651
Download PDF:
Sorry, we are unable to provide the full text but you may find it at the following location(s):
  • https://eprints.qut.edu.au/606... (external link)
  • Suggested articles


    To submit an update or takedown request for this paper, please submit an Update/Correction/Removal Request.