Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Effect of cumulative lightweight aggregate volume in concrete on its resistance to chloride-ion penetration
This paper presents an experimental study on the resistance of LWAC (lightweight aggregate concretes) to chloride-ion penetration in comparison to that of normal weight concrete of similar w/c (water cement ratio). 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.
Effect of cumulative lightweight aggregate volume in concrete on its resistance to chloride-ion penetration
This paper presents an experimental study on the resistance of LWAC (lightweight aggregate concretes) to chloride-ion penetration in comparison to that of normal weight concrete of similar w/c (water cement ratio). 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.
Effect of cumulative lightweight aggregate volume in concrete on its resistance to chloride-ion penetration
Einfluss des kumulativen Anteils an leichten Zuschlagstoffen in Beton an seiner Beständigkeit gegen Chloridionenpenetration
Liu, X.M. (Autor:in) / Zhang, M.H. (Autor:in)
2009
6 Seiten, 4 Bilder, 3 Tabellen, 18 Quellen
Aufsatz (Konferenz)
Englisch
| British Library Conference Proceedings | 2009
| British Library Online Contents | 2011
| British Library Conference Proceedings | 2010