On-line version ISSN 2309-8775
J. S. Afr. Inst. Civ. Eng. vol.50 n.1 Midrand Mar. 2008
H Beushausen; M G Alexander
Over the last decade, an approach to improving the durability of reinforced concrete construction has been developed in South Africa. The durability index test methods applied in this approach are unique to the country. Internationally, similar trends can be observed and a number of test methods for the quality assessment of hardened concrete, particular the cover zone have been developed world-wide. A group of researchers from different parts of the world carried out comparative tests on the quality of concrete cover, applying the most commonly accepted international test methods. The results indicate that the South African oxygen permeability and chloride conductivity test methods are successful in characterising the concrete cover in respect of important deterioration mechanisms. A good correlation exists between results obtained from these index test methods and those obtained from related test procedures applied overseas.
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Department of Civil Engineering
University of Cape Town
Mark G Alexander
Departement of Civil Engineering
University of Cape Town
HANS-DIETER BEUSHAUSEN studied structura engineering at the University of Applied Sciences in Hamburg, Germany, and the University of Cape Town (UCT), South Africa. He obtained his PhD in the Concrete Materials Research Group at UCT where he is currently employed as a senior research officer. His main research interests are durability and repair of concrete and concrete structures, and precast concrete technology.
MARK G ALEXANDER is Professor of CM Engineering in the University of Cape Town. He holds BSc(Eng), MSc(Eng) and PhD degrees from the University of the Witwatersrand. His teaching and research interests are in cement and concrete technology, with experience in materials and application to design and construction. He heads the Concrete Materials Research Group at UCT, where extensive work is being done on problems of marine concrete durability. He also acts as a specialist consultant to industry and the profession on concrete materials problems.