Self-activation of slag-cements with glass waste powder

The aim of this study is to evaluate the behavior of glass powder waste as alkaline activator of slag when both are used in blended cement. The slag blended cement was prepared with 70% slag, and then the slag was replaced with 10-20% glass powder by mass. The self-activation concept is here introdu...

Full description

Saved in:
Bibliographic Details
Published in:Materiales de construcción (Madrid) 2019, Vol.69 (336), p.203-e203
Main Authors: Trezza, M. A., Rahhal, V. F.
Format: Article
Language:English
Subjects:
Activation
Alkalies
alkaline activation
blended cement
By products
Cement hydration
Cements
Compressive strength
Dilution
Glass
Hydraulics
infrared spectroscopy
Mechanical properties
Mineralogy
Mortars (material)
Particle size
Recycling
Scientific imaging
Silica
Slag
Sodium
Waste management
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The aim of this study is to evaluate the behavior of glass powder waste as alkaline activator of slag when both are used in blended cement. The slag blended cement was prepared with 70% slag, and then the slag was replaced with 10-20% glass powder by mass. The self-activation concept is here introduced. Ground glass releases alkalis through dissolution in a slow and sustained way over time. This would activate slag. Ground glass improves fluidity of mortars and the compressive strength overcomes dilution and increases with age due to the combined pozzolanic action of slag and glass. The proposed blended cement has better mechanical properties than slag-cement. The proposed blended cement has better mechanical properties than slag-cement and due to less use of slag, it becomes more sustainable and it contributes to waste management.
ISSN:0465-2746
1988-3226
DOI:10.3989/mc.2019.13618