| Development of Geopolymer Concrete from
Fly Ash and Bottom Ash Mixture |
Deependra Kumar Sinha*, A. Kumar and Sanjay Kumar1
pages : 143-148
DOI : 10.1080/0371750X.2014.922427 |
| Abstract |
| Fly ash and bottom ash, the two main by-products of thermal power plant, have been used synergistically to
develop geopolymer concrete. Fly ash has been used as active constituent for geopolymerization whereas bottom
ash has been used as replacement of sand. Geopolymerization studies were carried out at ambient (27oC) and
elevated (55oC) temperatures using isothermal conduction calorimetry. The reaction product was characterized
using X-ray diffraction (XRD) and scanning electron microscopy (SEM). The geopolymer concrete prepared at 60oC
showed compressive strength in the range of 4-35 MPa. Strength development was studied as a function of alkali
concentration and Si/Al ratio. It was observed that strength got improved significantly with higher alkali concentration
and Si/Al ratio. Attempt has been made to correlate the structure with properties. |
| Full text : Subscribe to Download Full Text |
| [Go Back] |
