TY - JOUR N2 - The aim of the study was to determine the applicability of a new product added to water glass-containing foundry sands hardened with ethylene glycol diacetate. The new additive designated by the symbol "B" is a composition of aqueous solutions of modified polyalcohols, improving the sand knocking out properties. The scope of studies included testing various mechanical and technological properties of foundry sand mixtures, such as permeability, friability, life cycle of cores and knocking out properties. In the technological studies, two types of water glass with different values of the silica modulus and density, designated as R145 and R150, were used. Moulding sands were prepared with the additive "B". For comparison, reference sands with water glass but without the additive "B" were also made. In Part I of the article, the results of studies of the effect of additive "B" on the properties of foundry sands with water glass hardened by CO2 blowing were discussed. L1 - http://journals.pan.pl/Content/102003/PDF/afe-2017-0046.pdf L2 - http://journals.pan.pl/Content/102003 PY - 2017 IS - No 2 DO - 10.1515/afe-2017-0046 KW - Moulding sand KW - Water glass KW - Floster S technology KW - Additive to moulding sand A1 - Izdebska-Szanda, I. A1 - Kamińska, J. A1 - Angrecki, M. A1 - Stefański, Z. A1 - Palma, A. PB - The Katowice Branch of the Polish Academy of Sciences VL - vol. 17 DA - 2017 T1 - The Effect of Additive “B” on the Properties of Foundry Sands with Hydrated Sodium Silicate Made by Floster Technology UR - http://journals.pan.pl/dlibra/publication/edition/102003 T2 - Archives of Foundry Engineering ER -