ASTM International released a standard March 26, 2018, for geosynthetic cementitious composite mats (GCCM), a new family of materials that can help control erosion, protect slopes and berms, and line ditches and culverts. D8173 identifies proper layout, installation, and hydration procedures; describes equipment for designers, inspectors, and installers; and provides a checklist for contractors to use before installation.

“This standard provides details on fastening, overlapping, attachments, anchoring, and other topics critical to good installation,” says ASTM member John Paulson of Dison Contracting and Supply. “It will help minimize or eliminate common mistakes that may be made by a first-time installer.”

Paulson notes that because GCCM is unique to geosynthetics and erosion control applications, ASTM D35 Committee on Geosynthetics hopes to develop more standards related to testing, installation, and classification.

D8173 is available for $48 at

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