Abstract
The purpose of this study is to examine the influence of carbon (C) particles as filler (aggregate) in the production of geopolymers functional composite for possible precast panel application. Geopolymers was synthesized through alkali activation of metakaolin added with carbon particles relative to the mass of metakaolin. The mixture was cured at 70°C for 2 hours and the resulting composites were stored in open air for 28 days. The bulk density and the apparent porosity of the composites were measured by using Archimedes method. The thermal properties of the samples was examined by using thermal conductivity measurement and differential scanning calorimetry (DSC). The microstructure characterization of the samples were performed by using x-ray diffraction (XRD) and Scanning Electron Microscopy-Energy Dispersive Spectroscopy (SEM-EDS).
Highlights
Geopolymer is a new type of inorganic polymers synthesized through alkali activated Aluminosilicate materials at temperature below 100oC [1]
The bulk density and apparent porosity of the resulting composites were determined by Archimedes method
The density and the apparent porosity of the samples revealed that the resulting composites were light and the incorporation of carbon did not increase the volume of pores in the bulk of geopolymers
Summary
Geopolymer is a new type of inorganic polymers synthesized through alkali activated Aluminosilicate materials at temperature below 100oC [1]. This new inorganic material consists of polymeric chains of –Si–O–Al– similar to zeolite but its network is amorphous [2,3]. Geopolymers produced from metakaolin has already applied in many areas due to its excellent physical and mechanical properties [8]. Geopolymers synthesized from fly ash has been applied as green concrete in many areas such as precast floor panels, airport runways, and pedestrians paths [4,5,9,12]
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