Use of recycled glass as a raw material in the manufacture of Portland cement

Title: Use of recycled glass as a raw material in the manufacture of Portland cement
Author(s): Z. Xie, Y. Xi
Paper category : journal
Serial title: Concrete Science and Engineering
Abreviated Serial title: Concr. Sc. Eng.
ISSN: 1295-2826
Publisher: RILEM Publications SARL
Volume: 4
Issue: 15
Issue date: 2002-09-01
Publication year: 2002
Pages: 510 - 515
Total Pages: 6
Nb references: 11
Language: English

Abstract: Scrap glass is a solid waste from daily recycling. Most
of the waste glass is sodium-lime-silicate glass which has,
more or less, similar chemical compositions to clay, a raw
material in cement manufacturing. Therefore, we utilize
the solid waste in cement raw mix by replacing part of the
clayey component. In this study, the effects of the glass in
cement raw mix on clinker burning were investigated.
The experimental results show that the addition of the
glass into cement raw mix (1) results in the formation of
more liquid phase between 950°C to 1250°C compared
with conventional raw meals; (2) decreases C3S content in
the clinker; and (3) increases NC8A3 content, which leads
to f lash setting and poor strength development of the
cement. Therefore, it is necessary to increase the SG
value [SG = SO3 • 100% /(1.292 K2O + 0.85 Na2O)] of
the clinker when the glass is present in the raw mix.

Online publication: 2002-06-20
Classification: Scientific Reports
Publication type : full_text
Public price (Euros): 0.00