Roofing Slate Standards: A Critical Review
A peer-reviewed comparison of the international standards governing roofing slate — ASTM C406, EN 12326, China's GB/T 18600 and India's IS 6250 — showing how the same slate can pass or fail depending on how water absorption and bending strength are tested.
ElsevierConstruction and Building Materials 115 (Elsevier) — Cárdenes et al. · 2016
