Effect of plastering on the carbonation of a 19-year-old reinforced concrete building

✍ Scribed by S.K. Roy; D.O. Northwood; K.B. Poh

• Book ID: 103969200
• Publisher: Elsevier Science
• Year: 1996
• Tongue: English
• Weight: 742 KB
• Volume: 10
• Category: Article
• ISSN: 0950-0618
• DOI: 10.1016/0950-0618(95)00093-3

✦ Synopsis

An extensive carbonation

survey was conducted of a 19-year-old commercial building that was situated in a tropical environment.

Asignificant reduction in carbonation was found forthose structural components that were plastered (sand-cement render) compared to those with no surface finishing. There was no carbonation of the concrete when the plaster (render) thickness exceeded 30 mm. The carbonation data on non-plastered structural components showed that the depth of carbonation decreased with increasing core strength. The measured carbonation rate constant (K= 5.05 mm yP5) is consistent with previous measurements in a similar climate but is higher than repotted for structures in temperate climates (K = 1 to 3 mm yr".5).