Open AccessA Review Regarding the Use of Natural and Industrial by-products in the Production of Geopolymer Binders
Author(s) -
Brăduț Alexandru Ionescu,
Adrian-Victor Lăzărescu
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/877/1/012033
Subject(s) - geopolymer , metakaolin , ground granulated blast furnace slag , raw material , silica fume , waste management , fly ash , slag (welding) , portland cement , materials science , environmental science , cement , metallurgy , engineering , chemistry , organic chemistry
Rapid growth in population has led to the generation of large amounts of waste and environmental degradation. Environmental protection for future generations and to preservation of the already limited mineral resources, could be obtained with sustainable solutions for traditional Portland Cement Concrete. In order to produce geopolymers binders, raw materials rich in aluminum and silicon are alkali-activated. Some of the raw materials, for the production of the geopolymer binders can be obtained from natural sources, such as kaolin, metakaolin (calcined kaolin), diatomite, volcanic rock, etc., or industrial waste arising from production processes, such as fly ash, iron slag, blast furnace, granulated blast furnace slag, silica fume, marble dust, etc. The aim of this paper is to present relevant data in the field of alkali-activated geopolymer materials and study the opportunities of using Romanian mineral local raw materials in order to produce these types of binders.