Influence of environmental conditions and material properties on carbonation in concrete.

Abstract

In this thesis the effects of internal relative humidity, physical properties and mix proportions on the rate of carbonation of concrete are investigated. Although some of these effects have been studied and documented in the literature the exact nature of the relationships is unclear or difficult to quantify. In addition, several of the current models available for use in the prediction of carbonation incorporate factors which are difficult to determine accurately in-situ. Therefore, the main objective of this thesis is to establish the exact relationship between the rate of carbonation and the mix proportions, which will form the starting point for the design of normal portland cement concrete for a specified level of carbonation resistance. Also, the effectiveness of properties of concrete such as, strength and permeation properties, in conjunction with relative humidity measurements to assess the likely rate carbonation in created.

Date of Award	Dec 1999
Original language	English
Awarding Institution	Queen's University Belfast
Supervisor	P.A.M. Basheer (Supervisor) & G.I.B. Rankin (Supervisor)