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.
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