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[51420] Artykuł: Determination of Microstructure and Phase Composition of Sand-Lime Brick after Autoclaving ProcessCzasopismo: Procedia Engineering Tom: 161, Strony: 747-753ISSN: 1877-7058 Wydawca: ELSEVIER SCIENCE BV, SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS Opublikowano: 2016 Seria wydawnicza: Procedia Engineering Autorzy / Redaktorzy / Twórcy Grupa MNiSW: Materiały z konferencji międzynarodowej (zarejestrowane w Web of Science) Punkty MNiSW: 15 Klasyfikacja Web of Science: Proceedings Paper DOI Web of Science Keywords: silicate products  microsructure  tobermorite  calcium silicate hydrates  X-ray diffractometry (XRD)  SEM  |
The mass for sand-lime products consists of fully organic components: silica sand, quicklime and water. Depending on the proportions of ingredients used, admixtures and additives, the degree of fragmentation of the sand, and autoclaving temperatures different hydrated calcium silicates structures can arise. In autoclaved sand-lime products the following phases can be found mostly: C-S-H (I), C-S-H (II), 11A tobermorite, xonotlite and C2SH (A). Using a scanning electron microscope, the internal structure of "white brick"(common name of sand-lime products) was observed and the phase composition was examined by X-ray diffractometry. Pore size distribution was described using the most universal and most common method of analysis of the porosity of building materials Mercury Intrusion Porosimetry. An additional component to the standard ingredients of traditional sand lime products, lithium water glass was used. Three series of samples in the rectangular shape with dimensions 40 x 40 x 160 [mm] were prepared. The study of standard samples, with the content of 0.5% and 5.0% additives was performed in a Kielce University of Technology laboratories. (C) 2016 The Authors. Published by Elsevier Ltd.