Ken W. Day has, in his long career, held positions as a university lecturer and a structural designer, and in production, R&D, and management in the precast and ready mixed concrete industries. He ran his own consultancy for thirty years. James Aldred is Technical Director at AECOM, one of the world’s largest engineering firms. He was the Independent Verifier for the Burj Khalifa in Dubai. Barry Hudson is Director of Competency Center Materials at Heidelberg Cement in charge of concrete and aggregates operations for several major ready mix organisations in several countries.
"""It is imperative to promote the use of durable and sustainable concretes having adequate and sensitive specifications in order to avoid any waste of materials. This book … can be considered as a basic tool to achieve such a goal. It has been conceived and written by three great engineers who have great experience. It presents very clearly what to do, how to do it and when to do it for better concrete practice."" — Pierre-Claude Aïtcin, Université de Sherbrooke, Canada ""Mr. Day is a pioneer in the use of CUSUM charts for concrete test data analysis and Multigrade, Multivariable, Cusum QC. The trend towards concrete performance based specifications dealt with in a book perhaps for the first time Mr Day has educated hundreds of concrete quality professionals worldwide The very broad scope for the book and knowledgeable authors makes this book a must buy."" ––Karthik H. Obla, National Ready Mixed Concrete Association, Silver Spring, Maryland"