Modification of Natural Anhydrite by Mixed Exciter

Dominik Gazdič; Jana Stachová; Radek Magrla

doi:10.4028/www.scientific.net/AMR.1100.56

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The Utilization of Waste Aluminosilicate to Prepare Cement Composite with Thermal Insulating and Drying Effect
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High Strength Alkali Activated Slag Cements with Controlled Setting Times and Early Strength Gain
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The Analysis of the Behavior of Alkali-Activated Materials Applied as a Repair Mortar
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Modification of Natural Anhydrite by Mixed Exciter
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Laboratory Burning of Anhydrite from Phosphogypsum
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Production of Alpha Plaster Modification by Pressureless Method
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Burnt Hydraulic Binder on the Basis of FBC Ashes
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FBC – Ash as Principal Constituent of Mixed Hydraulic Binder
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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 1100Modification of Natural Anhydrite by Mixed Exciter

Modification of Natural Anhydrite by Mixed Exciter

Abstract:

The objective of this experimental work was to monitor the influence of applied external exciter on anhydrite obtained properties. As a basic raw material anhydrite imported from Poland was used, as hydration exciter a mixture of anhydrous sodium sulphate and Portland cement CEM I 42.5 R in total dose of 5 % by anhydrite weight was applied. In the first step the anhydrite underwent the setting of mineralogical composition using the X-ray diffraction analysis (XRD) and monitoring of grain size and shape by the scanning electron microscopy (SEM). In the next step the influence of applied mixing exciter on obtained basic technological properties according to standard CSN EN 13454 was monitored. It was the setting of basic technological properties of anhydrite binder with and without addition of the mixing external exciter and also the setting of strengths of standard anhydrite mortar with addition of external mixing exciter. Upon the obtained values the comparison with technical requirements of the standard for calcium sulphate binders was carried out and this anhydrite mortar was classified as well.

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Periodical:

Advanced Materials Research (Volume 1100)

Pages:

56-59

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1100.56

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Online since:

April 2015

Authors:

Dominik Gazdič*, Jana Stachová, Radek Magrla

Keywords:

Anhydrite, Binder, Exciter, Portland Cement, SEM, XRD

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References

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