Abstract: A novel eco-friendly method has been developed for the fabrication of high dense (3.3-5.2 g/cc) red mud based material blocks for shielding high energy X- and ?-rays. The red mud based material blocks with various densities were fabricated by hot compacting partially melted red mud, red mud:Bi2O3, red mud:Ba(OH)2 and red mud:Bi2O3:Ba(OH)2 samples at 1150° C., 1000° C., 1050° C. and 1000° C., respectively. This material can be used to build radiation shielding structures in medical diagnosis, radiotherapy, industrial radiography, particle accelerators, food sterilization plants, nuclear power plants, and radioactive material storage rooms, without further structural support unlike lead (concrete walls). It is economically viable and will suppress the accumulation of hazardous red mud and associated environmental pollutions.

Abstract: The present invention provides a nano phosphatic hybrid geopolymeric corrosion resistant coating material. The tailored precursor of corrosion resistant coating material is obtained by a process involving, together dry grinding of raw materials fly ash, sodium hydroxide, rice husk, tri calcium phosphate and cetyl trimethyl ammonium bromide optionally with sodium silicate, in solid powder form. The developed coating material obtained by adding water to tailored precursor contains nano sized phosphatic compounds of Cancrisilite (sodium aluminum carbonate silicate hydrate), quartz, mullite, heamatite, sodium aluminum silicate, Herschelite (sodium aluminum silicate hydrate), Sucrose, ? D-Glucose, Native cellulose, and phenol, responsible for providing improved corrosion resistant properties and adhesion to the mild steel substrates. The geo-polymeric coating material is used as an anti-corrosive, heat resistant coating material on various materials e.g. mild steel substrates.

Abstract: The present invention provides a nano phosphatic hybrid geopolymeric corrosion resistant coating material. The tailored precursor of corrosion resistant coating material is obtained by a process involving, together dry grinding of raw materials fly ash, sodium hydroxide, rice husk, tri calcium phosphate and cetyl trimethyl ammonium bromide optionally with sodium silicate, in solid powder form. The developed coating material obtained by adding water to tailored precursor contains nano sized phosphatic compounds of Cancrisilite (sodium aluminium carbonate silicate hydrate), quartz, mullite, heamatite, sodium aluminium silicate, Herschelite (sodium aluminium silicate hydrate), Sucrose, ? D-Glucose, Native cellulose, and phenol, responsible for providing improved corrosion resistant properties and adhesion to the mild steel substrates. The geo-polymeric coating material is used as an anti-corrosive, heat resistant coating material on various materials e.g. mild steel substrates.

Abstract: The present invention provides a composition for advanced hybrid geopolymeric functional materials possessing very broad application spectrum ranging from cementitious materials to advanced functional materials having “Inorganic-Organic Hybrid” matrix in contrast to the limited application of conventional geopolymeric materials having “Inorganic matrix” only. The invention further relates to a process for the preparation of these materials. The process obviates the need of external addition of sodium silicate which is one of the costliest and main raw materials in conventional geopolymerisation processes. Interestingly, in the present invention the sodium silicate has been synthesized in situ by designing of conditions for synergistic and simultaneous mechano-chemical reactions among the selected raw materials viz. inorganic and organic wastes under alkaline environment.

Abstract: The present invention provides a composition for advanced hybrid geopolymeric functional materials possessing very broad application spectrum ranging from cementitious materials to advanced functional materials having “Inorganic-Organic Hybrid” matrix in contrast to the limited application of conventional geopolymeric materials having “Inorganic matrix” only. The invention further relates to a process for the preparation of these materials. The process obviates the need of external addition of sodium silicate which is one of the costliest and main raw materials in conventional geopolymerisation processes. Interestingly, in the present invention the sodium silicate has been synthesized in situ by designing of conditions for synergistic and simultaneous mechano-chemical reactions among the selected raw materials viz. inorganic and organic wastes under alkaline environment.