@ARTICLE{Bobrowski_A._Thermal_2018,
 author={Bobrowski, A. and Drożyński, D. and Jakubski, J. and Szumera, M. and Kaczmarska, K. and Grabowska, B.},
 volume={vol.18},
 number={No 4},
 journal={Archives of Foundry Engineering},
 pages={93-98},
 howpublished={online},
 year={2018},
 publisher={The Katowice Branch of the Polish Academy of Sciences},
 abstract={The paper presents the results of an investigation of the thermal deformation of moulding sands with an inorganic (geopolymer) binder with a relaxation additive, whose main task is to reduce the final (residual) strength and improves knocking-out properties of moulding sand. The moulding sand without a relaxation additive was the reference point. The research was carried out using the hot-distortion method (DMA apparatus from Multiserw-Morek). The results were combined with linear deformation studies with determination of the linear expansion factor (Netzsch DIL 402C dilatometer). The study showed that the introduction of relaxation additive has a positive effect on the thermal stability of moulding sand by limiting the measured deformation value, in relation to the moulding sand without additive. In addition, a relaxation additive slightly changes the course of the dilatometric curve. Change in the linear dimension of the moulding sand sample with the relaxation additive differs by only 0.05%, in comparison to the moulding sand without additive.},
 type={Artykuły / Articles},
 title={Thermal Deformation of Moulding and Core Sands with an Inorganic Binder Containing a Relaxation Additive},
 URL={http://ochroma.man.poznan.pl/Content/109215/PDF/AFE%204_2018_18.pdf},
 doi={10.24425/afe.2018.125175},
 keywords={Moulding sand, thermal deformation, Inorganic binder, Geopolymer, Dilatometric studies},
}