Mark Alexander is Professor of Civil Engineering at the University of Cape Town (UCT) and Director of the Concrete Materials and Structural Integrity Research Unit at UCT. He is a Fellow of the University of Cape Town and a registered Professional Engineer in South Africa. He teaches and researches in cement and concrete materials engineering relating to design and construction, with interests in concrete durability, service life prediction, concrete sustainability, and repair and rehabilitation of deteriorated concrete structures. He publishes regularly in local and international journals, and is President of RILEM, an international organisation linking experts and promoting research in civil engineering across 70 countries.