ASTM C207

Hydrated Lime for Masonry Purposes

Applicability: ASTM C207 defines the requirements for four types of hydrated lime (N, S, NA, and SA) specifically for use in construction applications, primarily involving cement-based mixtures. It is designed for use in mortar, stucco, and plaster applications to improve workability, water retention, and reduce cracking.

Purpose: ASTM C207 is the standard specification defining the chemical composition and physical requirements for four types of hydrated lime (N, S, NA, SA) used specifically in masonry mortars, concrete, and stucco. It ensures quality control regarding plasticity, water retention, and unhydrated oxide content.