As a relative new material, geopolymer cement offers the benefits as a construction material for sustainable development.  In this study, geopolymer cement was prepared from waste cement powder at ambient temperature and humidity.  Alkaline activator prepared by diluting a commercially available sodium silicate with water has been applied for the consolidation of waste cement powder.  Granulated blast furnace slag was added as a hardener.  The amount of the alkaline activator and the furnace slag were varied to obtain higher strength.  The obtained geopolymer samples were characterized by powder X-ray diffraction (XRD), scanning electron microscopy (SEM), simultaneous thermogravimetric and differential thermal analysis (TG-DTA), Fourier transform infrared spectroscopy (FT-IR) and nitrogen adsorption-desorption at 77 K.  The geopolymer monolith prepared with 0.50 alkaline activator to solid ratio had a homogeneous structure and a high compressive strength (above 35 MPa) enough to be used as construction material.

Preparation and properties of geopolymer cement from waste cement powder

243rd National Meeting (2012)

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.