Welcome to the Expanded Shale, Clay, and Slate Lightweight Aggregate Industry

ESCSI is the international trade association for manufacturers

of rotary kiln-produced expand­ed shale, expanded clay and expanded slate lightweight aggregate. ESCSI promotes the exten­sive use of rotary kiln-produced lightweight aggregate in the lightweight concrete masonry and structural lightweight concrete markets, as well as use in asphalt, geotechnical and other appli­cations. Based on research and development, educational material is disseminated to all phas­es of the building industry. The association works closely with other technical organizations, ACI, ASTM, etc. to maintain product quality, life-safety and professional integrity throughout the construction industry and related building code bodies.


Click here to view Lightweight Design eNews Reference Manual Button


Calendar of Events

ESCSI Midyear Meeting
May 15-19, 2017
Park City, UT

Come visit our booth at the following shows:

StormCon Expo
Aug. 28-30, 2017
Seattle, WA

American Society of Landscape Architects (ASLA) Expo
Oct. 20-23, 2017
Los Angeles, CA