Development of heat resistant geopolymer-based materials from red mud and rice husk ash

摘要: Geopolymer is an inorganic polymer composite developed by Joseph Davidovits in 1970s. Such material has potentials to replace Ordinary Portland Cement (OPC)-based materials the future because of its lower energy consumption, minimal CO2 emissions and production cost as it utilizes industrial waste resources. Hence, geopolymerization process produce geopolymers for various applications like building can be considered green industry. Moreover, this study, red mud rice husk ash were used raw geopolymeric production, which are aluminum agricultural wastes that need managed reduce their negative impact environment. The mixed with sodium silicate (water glass) solution form geopolymer paste. paste was filled into 5-cm cube molds according ASTM C109/C109M 99, then cured at room temperature 28 days. These products tested compressive strength volumetric weight. Results indicated lightweight a days range 6.8 15.5 MPa. specimens also heat resistance 1000oC 2 hours. suggest high increase from 262% 417% after exposed temperature.Geopolymer volumetr...