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prEN 196-13

Methods of testing cement - Part 13: Effective alkali content

Draft Public enquiry
Comment end date 2026-10-13
Export comments Read draft and comment

Project stage codes

1. Decision on WI Proposal
2. Projektas
3. Viešoji apklausa
From 2026-08-14 till 2026-10-13
4. Closure of enquiry
5. Submission to Formal Vote

Organisation

CEN Europos standartizacijos komitetas

ICS

91.100.10 - Cement. Gypsum. Lime. Mortar

Technical Committee

TK 25 Matrix, gypsum and gypsum based products

ForeignTC'S

CEN/TC 51

Number of comments

0

Comment start date

2026-08-14

Scope

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).