DIN Standards Committee Building and Civil Engineering
Method of testing cement - Part 17: Determination glass content of granulated blast furnace slag as constituent for common cement
Abstract
This document describes two equivalent test methods for determining the glass content in Granulated blast furnace Slag (GBS) as constituent for common cement as defined on EN 197-1. Method A – Method of determining the glass content of GBS by X-ray diffraction. Method B – Method of determining the glass content of GBS by polarized optical microscopy. The glass content (or glassy/amorphous phase) in GBS is the fraction of the material that lacks a crystalline structure, having solidified rapidly from the melt in the form of amorphous glass. It is usually expressed as a percentage (wt%) of the total slag. In the absence of a product standard or a specification in the product standard, the constituent is tested at the fineness of the intended use. Furthermore, these test methods are used in manufacturing control of cement constituents for assessing their conformity to the limit indicated in EN 197-1.
Begin
2026-04-20
WI
00051179
Planned document number
DIN EN 196-17
Project number
00520181
Responsible national committee
NA 005-07-13 AA - Cement (national mirror committee for CEN/TC 51 and ISO/TC 74)
Responsible european committee
CEN/TC 51/WG 15 - Test methods of cement and its constituents
