Concrete carbonation in arid climate

Title: Concrete carbonation in arid climate
Author(s): H. Al-Khayat, M. N. Haque, N. I. Fattuhi
Paper category : journal
Serial title: Materials and Structures
Abreviated Serial title: Mater. Struct.
ISSN: 1359-5997
Publisher: RILEM Publications SARL
Volume: 35
Issue: 251
Issue date: 2002-08-01
Publication year: 2002
Pages: 421 - 426
Total Pages: 6
Nb references: 15
Language: English

Abstract: Fifty-four different concrete mixes were exposed to hot arid weather in Kuwait to monitor their extent of carbonation.
Various parameters affecting carbonation such as water/cement ratio,cement content,type of cement, type and dosage of admixture,water-curing period,type of coating,and the addition of silica fume or pulverized fuel ash were investigated.
For many of these variables, the carbonation depth and rate constant (K)ar reported for an exposure period of 8.
6 years.
The results show that the water/cement ratio is one of the main factors affecting carbonation.
The values of (K) ranged from 2.
1 to 7.
8 as the water/cement ratio increased from 0.
45 to 0.
8.
Concrete made with white Portland cement carbonated less than ordinary or sulphate resisting cements.
Two curing compounds were effective in reducing carbonation while two coating materials prevented carbonation after eight years of exposure.

Online publication: 2002-06-27
Classification: Technical Reports
Publication type : full_text
Public price (Euros): 0.00
doi: 10.1617/13672