Characterization of Cement and Fly Ash in Quality Control

The Anton Paar powder cell allows fast and reliable methods for detecting changes in cementfly-ash mixtures, and determining exact amounts of the components needed.

Introduction

Cement is a finely ground, hydraulically acting binding agent used in concrete and mortar. Portland cement is currently the most commonly used cement due to its good strength development. It mainly consists of calcium, silica and aluminum. The basic materials are sintered and afterwards finely ground. Besides the construction industry, Portland cement is, amongst others, used in dental medicine to close up root canals.

Fly ash is the firm, spherical, disperse residue resulting from combustion, resolved with flue gas. It mainly consists of Al2O3 and SiO2 with particle sizes between 1 µm and 1 mm. Fly ash is formed in thermal power plants and incineration plants. Pure and homogenously burning materials (e.g. black coal) create a suitable fly ash. With specific filter systems, the fly ash can be separated from flue gas. Due to the chemical properties of fly ash (e.g. spherical morphology) is it used as a high-value secondary raw material in the construction industry for various applications, e.g. concrete and cement.

The Anton Paar powder cell allows fast and reliable methods for detecting changes in cement-fly-ash mixtures, as well as for determining exact amounts of the components needed.

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