Meeting/Event Information

Abstract

Some basic information on the mechanics of cement hydration, chemical and physical changes that effect shrinkage. A summary look at concrete mixture proportioning and its effect on concrete shrinkage, things like: supplementary cementitious materials, water/cement ratio, and aggregate volume. A look at field placing environment and some of the things that effect on concrete shrinkage, weather (temperature, wind & relative humidity). A review of some of the most common types of concrete cracking, with a look at their cause, investigation and prevention. A review of ACI Code, Specification and Guide resources for concrete slab design considerations.

Bio
Wayne is a Senior Technical Service Engineer with Holcim Cement where he is responsible for Marketing Quality & Technical Support for Portland Cement and Slag Cement sales in the Southeastern US. He has over 30 years’ experience in the construction materials testing and analysis field. He is an experienced concrete petrographer and has investigated concrete and cement performance problems throughout the world. He graduated with a degree in Civil Engineering Technology from Southern Polytechnic State University in 1987; is a Register Professional Engineer in Georgia, Alabama, North Carolina & South Carolina; is a member of ASTM Committees: C01 on Cement, C09 on Concrete & Aggregates, C12 on Masonry and C15 on Masonry Units; he serves on three ACI Committees: 231 Early-Age Properties, C610 Concrete Field Technician Certification & C630 Concrete Inspector Certification. He is a Past-President of The Georgia ACI Chapter and currently serves as the Chairmen of their Certification and Accreditation Board.