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. 



New Report Release:  "Determination of Transport Properties of Lightweight Aggregate Concrete for Service Life Modeling" -
study finds significantly increased concrete durability and service life using 100-year-old technology    

ESCSI Honors its 2017 Holm Award Recipient 

ESCSI Honors its 2017 Erskine Award Recipient 

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Calendar of Events

Come visit our booth at the following shows:

CitiesAlive Green Roof & Wall Expo
Sept. 18-21, 2017
Seattle, WA

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