Problems in the Fill Construction Using Coal Ashes

On the Radioactivity of Fly Ashes from Coal Power Plants

The radioactivity of Greek lignites and their ashes was studied. It was found that the radionuclides in them belong to the uranium series. Fly ashes are relatively rich in radioactivity. Concentrations up to 7 , 1 0 _ 5 g / g and 12 pCi/g were measured for 238U and 226Ra, respectively. The associated hazards from radioactivity escaping from stacks of thermopower plants or when fly ashes are use...

Characterization of Nano-Ashes Generated during Pulverized Coal Combustion

repair mortars and new concretes with coal bottom and biomass ashes using rheological optimisation

the objective of the present work is to analyse the potential of using non-classical additions in concrete and mortar compositions such as coal bottom ash (ba) and biomass ash (bio), as partial replacing binder of ordinary portland cement. it is intended to deal with production of these type of wastes and its accumulation and contribute to the minimisation of carbon and embodied energy in const...

Quantitative Rietveld Analysis of the Crystalline and Amorphous Phases in Coal Fly Ashes

X-ray powder diffraction (XRD) in combination with the Rietveld method was used to evaluate the proportion of crystalline and amorphous (glassy) phases in fly ashes produced in pulverized-coalcombustion (PCC) power plants. The quantification of amorphous phases through the Rietveld method is most usually carried out i) by using an internal standard or ii) by using a poorly-crystalline phase to ...

Ashes to ashes

The Natural History Museum in London is to return the remains of 8 aboriginal people to the Australian government. The remains include the skull of an aboriginal person thought to have been illegally exported to Britain in 93. The rest comprise the remains of 7 indigenous individuals from Tasmania and will be returned after a three-month period of study by scientists. Museum director Michael Di...