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Possibilities of a novel use of silica fume in mineral binding systems
Affiliation:1. Materials for Energy and Environment (MEE) Research Group, Mae Fah Luang University, 57100, Thailand;2. School of Science, Mae Fah Luang University, 57100, Thailand;3. National Nanotechnology Center, 12120, Thailand;1. Institute for Multidisciplinary Research, University of Belgrade, Kneza Višeslava 1, 11030 Belgrade, Serbia;2. Institute of General and Physical Chemistry, Studentski trg 12-16, 11000 Belgrade, Serbia;1. Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, Sofia, Bulgaria;2. Institute of Nuclear Research, Hungarian Academy of Sciences, Debrecen, Hungary;3. CNR-Istituto per lo Studio dei materiali Nanostrutturati Via Ugo La Malfa 153, 90146 Palermo, Italy;4. Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria;5. CNR - Istituto di Scienze e Tecnologie Molecolari, via C. Golgi 19, 20133 Milano, Italy;1. Chemistry Department, University of Jordan, Amman 11942, Jordan;2. Zarqa College, Al-Balqa Applied University, P.O. Box 313, Zarqa 13110, Jordan;1. Prosthodontics, Faculty of Dentistry, The University of Hong Kong, Hong Kong;2. Dental Materials Science, Applied Oral Sciences, Faculty of Dentistry, The University of Hong Kong, Hong Kong;3. Mechanical and Aerospace Engineering, The Hong Kong University of Science and Technology, Hong Kong
Abstract:The aim of the study was to estimate the conditions of the effectiveness of a novel use of silica fume in concrete. This represents chemically modified silica fume (MSF). The activity of MSF evidently is predominantly based on the production of calcium silicate hydrates in the binding systems resulting in the advantageous densifying of the formatted pore structure and in the increase in strength of the material. The results obtained have shown that MSF is a very effective admixture for the acceleration of hardening of mineral binder based materials. A very important fact is its high activity in the binding systems based on Portland cement slag blends with very low Portland cement content and on basic blast furnace slag alone. Therefore, MSF seems to be a prospective component for development for blend binders with very low content in Portland cement and untraditional binders based only on solid waste materials, predominantly containing calcium silicate and alumino silicate constitutions. MSF seems to be worthy of more detailed study on the effective utilisation of its positive effects.
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