Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 2 of 2
Full-Text Articles in Engineering
Effect Of Chloride Exposure Condition On The Performance Of Concretes Containing Pfa, Paraic Ryan, Alan O'Connor
Effect Of Chloride Exposure Condition On The Performance Of Concretes Containing Pfa, Paraic Ryan, Alan O'Connor
International Conference on Durability of Concrete Structures
Over the past number of decades the use of different supplementary cementing materials have been investigated, with a view to increasing the resilience of reinforced concrete to chloride-induced corrosion. The slow nature of chloride-ion ingress has meant much of the information available on the relative performance of different concretes has been derived from accelerated testing, with the majority of these tests conducted under fully saturated conditions. While there is merit to such practices, there is also a need to examine the relative performance of different concretes under unsaturated conditions. This need is highlighted by the fact that reinforced concrete elements …
Study Of The Deterioration Of Concrete Incorporating Sulfide-Bearing Aggregates, Josée Duchesne, Benoit Fournier, Julie Francoeur
Study Of The Deterioration Of Concrete Incorporating Sulfide-Bearing Aggregates, Josée Duchesne, Benoit Fournier, Julie Francoeur
International Conference on Durability of Concrete Structures
In the Trois-Rivières area (Québec, Canada), several hundred foundations of private houses, apartment and public buildings were built using concrete incorporating an anorthositic gabbro coarse aggregate containing sulfide minerals. A large number of those concrete structures developed serious deterioration within 3 to 5 years after their construction, which triggered, in many cases, their demolition/replacement. To help understanding the deterioration mechanisms and the conditions most prone to the development of premature damage, as well as quantifying the rate of deterioration, concrete blocks, 1 m x 1 m x 0.225 mm in size, were extracted from housing foundations just prior to their …