Radiological and Structural Characterization of Raw and Alkali-Activated Wood Ash and Metakaolin Blends

The aim of the presented research was to investigate application possibility wood ash and metakaolin obtain alkali-activated materials as relatively new in building industry. Thus, order assess adequate use these waste materials, structural radiological characteristics should be considered. Until now, focus has been on from thermal power plants produced by burning coal, but a large part households our country have individual fireplaces which is used basic raw material; thus, it very interesting measure activity concentration radionuclide well reusing that for other purposes. All were studied, terms physical chemical characteristics, methods such X-ray diffraction (XRD), Fourier transform infra-red (FTIR) spectroscopy, scanning electron microscopy energy-dispersive spectroscopy (SEM/EDS). XRD measurements samples showed consists calcite larnite. FTIR revealed polymeric Si–O–Al framework Si–O bonding bands corresponding silicon dioxide. Determination content performed means gamma-ray spectrometry. Results alkaline activation process led decrease radionuclides detected measured samples. External radiation hazard index (Hex) reduced more than 50% after alkali activation. results indicate potential their safe construction.