October 12, 2017 2 pm ET (1 pm CT/Noon MT/11am PT)
Speaker: Patrick Webb, Lecturer and Research Associate, The Center for Traditional Craft in Savannah, GA
1 AIA HSW Learning Unit
This session will consider the various material components that constitute heritage plasters, stuccoes and mortars with a special focus on the chemistry and practical applications of the five "binders" (active components that have the most determinative influence on performance).
· Define what "plaster" means in everyday use and how it corresponds to the similar terms of stucco and mortar.
· Explain the important role of aggregates and fibers.
· Provide an overview of the general chemical behavior of various plaster binders.
· Give examples of practical applications in contemporary building and how heritage plasters have been put to good use in the past.