Event (329)

Mineralogical changes of slag and fly ash cements during hydration

24 March 2014  XRD analysis in combination with the Rietveld method enables the quantification of hydrated cementitious systems containing cement, blast-furnace slag and fly ash. The aim of the analysis approach is to determine all occurring crystalline phases and to distinguish between the amorphous contents originating from blast-furnace slag, fly ash and amorphous or ill-crystalline phases formed during the hydration reaction. The investigation of the time dependent decrease of the amorphous blast-furnace slag and fly ash content enables to follow the reaction of these materials and to determine the overall degree of reaction. In order to quantify the different amorphous contents, internal and external standard methods as well as hkl-approaches can be applied.

Analyzing and groundtruthing soil characteristics
Analyzing and groundtruthing soil characteristics

15 September 2016  ASD's spectroscopy webinar in September will focus on the application of Soil Characteristics and will feature the FieldSpec 4 and HandHeld 2 ASD instruments. Registrants and attendees of this webinar will learn: - How water has the ability to alter soil spectral reflectance - Why the location of water in the soil has importance - Soil nutrient and organic matter analysis - The use of an ASD instrument for UAS sensor calibration - The ability to groundtruth a UAS sensor using an ASD instrument

Modern solutions for electrolytic bath analysis in aluminum industries

30 January 2015  The webinar will explain several methods and options for electrolytic bath analysis using X-ray diffraction (XRD) as a standard tool for process control in aluminum industries. Different techniques for the determination of excess alumina (exAlF3), bath ratio (BR) and phase composition of standard and non-standard baths directly from the XRD pattern will be discussed and compared. The webinar targets operators and managers from process control departments of aluminum smelters, academic XRD working on process control solutions for mining and metal industries as well as all other people from the analytical sector, interested in new XRD method.