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  

Click here to view Lightweight Design eNews Reference Manual Button


Calendar of Events

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