September 7-12, 2003
Due to enhanced mechanical and chemical properties, geopolymeric materials are a potential alternative to ordinary Portland cement and high-strength cement for the construction industry. The effects of aggregate particle size on the formation and the mechanical properties of geopolymeric materials are investigated in the current work. The addition of soluble silicates to the alkaline activator was found to increase the dissolution of silicate ions from the aggregate into the geopolymer binder phase. The results indicate that the surface area of aggregate influences the strength development of a geopolymer.
Christine Isabella , Grant C. Lukey, Hua Xu, and Jannie S.J. van Deventer, "The Effect of Aggregate Particle Size on Formation of Geopolymeric Gel" in "Advanced Materials for Construction of Bridges, Buildings, and Other Structures III", Vasant Mistry, P.E., Office of Bridge Technology, Federal Highway Administration, USA; Dr. Atorod Azizinamini, Ph.D., P.E., Civil Engineering Department, University of Nebraska, USA; John M. Hooks, P.E., Office of Infrastructure Research & Development, Federal Highway Administration, USA Eds, ECI Symposium Series, Volume P05 (2003). http://dc.engconfintl.org/advanced_materials/9