Methods of testing cement -- Part 13: Effective alkali content (prEN 196-13)

Tehnički odbor

HZN/TO 74 Cement i vapno

Završetak komentiranja

29.10.2026.

This document specifies the apparatus and procedure for determining the effective alkali content of cements and other hydraulic binders. The method determines the effective alkali content after 28 days of hydration by extracting pore water from cement stone and determining the concentration of sodium and potassium (method A) or hydroxyl ions in the solution (method B).