Use of combined durability parameters for different exposure conditions

Author(s): B.S. Dhanya, M. Santhanam
Paper category: Workshop
Book title: RILEM International workshop on performance-based specification and control of concrete durability
Editor(s): D. Bjegović, H. Beushausen, M. Serdar
ISBN: 978-2-35158-135-3
e-ISBN: 978-2-35158-136-0
Pages: 101 - 108
Total Pages: 8
Language: English

Abstract: 
Aggressive chemicals that cause concrete deterioration, such as chlorides, sulphates, carbon dioxide, oxygen and water vapour, enter into concrete by different transport mechanisms. This paper analyses the suitability of using combinations of test methods for different exposure conditions in a chloride laden environment, linking them with the transport mechanisms effective in these conditions. The tests considered in the study mainly focus on chloride penetrability and water permeability. The tests include Wenner Four Probe Resistivity, Rapid Chloride Permeability Test (ASTM C 1202), Water permeability Test (DIN 1048-5) and Water Sorptivity Test (South African Durability Index Manual). The role of mineral admixtures in achieving durability was also investigated in this paper by considering experimental data from 24 concrete mixtures made with various combinations of cement with slag, and fly ashes Type C and Type F. The test results were then compared and correlations between similar tests were investigated. The paper gives recommendation for the combination of durability parameters to be specified for different exposure conditions along with their limiting values. The results also reaffirm the suitability of slag in chloride-laden environments.

Online publication: 2013
Publication Type: full_text
Public price (Euros): 0.00