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Budownictwo i Inżynieria Środowiska

Budownictwo i Inżynieria Środowiska
2015.164, DOI: 10.7862/rb.2015.164

Determination of glass waste allowable amound used as an additive to portland cement

Viktor SHEVCHENKO, Galyna KOTSAY

DOI: 10.7862/rb.2015.164

Abstract

One of the possible ways of glass waste recycling is its usage as an additive to cement. A great number of authors consider glass a pozzolanic additive due to the high content of SiO2 amorphous phase and suggest to use it instead of cement in amount of 10-30%. However the high content of R2O in glass (13-14%) favors alkaline corrosion in cement and therefore should be limited. In the work was determined of pozzolanic activity for different types glass waste according to Butt J. and EN 196-5:2006. Compared with known mineral additives, such as microsilica and fly ash, glass wastes have very low pozzolanic activity. Therefore, increasing strength in the early stages of hydration cement associated with an alkaline component in a glass additive and not pozzolanic activity of glass waste. To estimate the effect of alkali component in the glass additive we introduced the notion of alkaline activity of cement-glass mixture. Taking as example different types of cement according to the standard PN-EN 197-1:2011 we demonstrate that substitution of neat cement for grinded glass waste is limited due to glass high alkalinity and low pozzolanic activity. The proposed method of the calculation of glass additive allowable amount permits to estimate the glass effect on total alkaline activity of cement compositions at the design stage.

Full text (pdf)

References

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About this Article

TITLE:
Determination of glass waste allowable amound used as an additive to portland cement

AUTHORS:
Viktor SHEVCHENKO (1)
Galyna KOTSAY (2)

AUTHORS AFFILIATIONS:
(1) Warsaw University of Technology
(2) Warsaw University of Technology

JOURNAL:
Budownictwo i Inżynieria Środowiska
2015.164

KEY WORDS AND PHRASES:
glass waste, Portland cement, pozzolanic and alkali activity

FULL TEXT:
http://doi.prz.edu.pl/pl/pdf/biis/387

DOI:
10.7862/rb.2015.164

URL:
http://dx.doi.org/10.7862/rb.2015.164

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