Preparation and Characterization of New Geopolymer-Epoxy Resin Hybrid Mortars
Open Access
- 17 July 2013
- Vol. 6 (7), 2989-3006
- https://doi.org/10.3390/ma6072989
Abstract
The preparation and characterization of metakaolin-based geopolymer mortars containing an organic epoxy resin are presented here for the first time. The specimens have been prepared by means of an innovative in situ co-reticulation process, in mild conditions, of commercial epoxy based organic resins and geopolymeric slurry. In this way, geopolymer based hybrid mortars characterized by a different content of normalized sand (up to 66% in weight) and by a homogeneous dispersion of the organic resin have been obtained. Once hardened, these new materials show improved compressive strength and toughness in respect to both the neat geopolymer and the hybrid pastes since the organic polymer provides a more cohesive microstructure, with a reduced amount of microcracks. The microstructural characterization allows to point out the presence of an Interfacial Transition Zone similar to that observed in cement based mortars and concretes. A correlation between microstructural features and mechanical properties has been studied too.This publication has 52 references indexed in Scilit:
- Use of reservoir clay sediments as raw materials for geopolymer bindersAdvances in Applied Ceramics: Structural, Functional and Bioceramics, 2013
- Mechanical Performances of Weathered Coal Fly Ash Based Geopolymer BricksProcedia Engineering, 2011
- Geopolymerisation: A review and prospects for the minerals industryMinerals Engineering, 2007
- Coal fly ash as raw material for the manufacture of geopolymer-based productsWaste Management, 2007
- Physical evolution of Na-geopolymer derived from metakaolin up to 1000 °CJournal of Materials Science, 2007
- Formation of aluminosilicate geopolymers from 1:1 layer-lattice minerals pre-treated by various methods: a comparative studyJournal of Materials Science, 2007
- Geopolymerisation of low calcium ferronickel slagsJournal of Materials Science, 2006
- Optimization of geopolymer synthesis by calcination and polycondensation of a kaolinitic residueResources, Conservation and Recycling, 2003
- Synthesis and characterisation of materials based on inorganic polymers of alumina and silica: sodium polysialate polymersInternational Journal of Inorganic Materials, 2000
- GeopolymersJournal of Thermal Analysis and Calorimetry, 1991