Bibliografia publikacji pracowników
Państwowej Szkoły Wyższej w Białej Podlaskiej
Baza tworzona przez Bibliotekę Akademii Bialskiej im. Jana Pawła II.
Zapytanie:
HYDROPHOBIZATION Liczba odnalezionych rekordów: 3
Przejście do opcji zmiany formatu | Wyświetl/ukryj etykiety | Wyświetlenie wyników w wersji do druku | Pobranie pliku do edytora | Nowe wyszukiwanie Streszczenie: The examinations of concrete involved partial substitution of cement with cement kiln dust (CKD) 0, 5, 10, 20 and 30%. The water/cement (w/c) ratio amounted to 0.36. The obtained findings pertaining to open porosity, density, and volumetric density were found to correlate with the capillary action and absorptivity of the analyzed types of concrete. With the maximum addition of CKD, i.e. 30%, open porosity decreased by 35%. In turn, CKD added in the amount of 5% resulted in a slightly reduced addition compressive strength, amounting to 1.3% and 2.1% following 28 days and 56 days of concrete curing, respectively. After 28 days, the differences in strength were greater when the additive was supplied in higher amounts, i.e. 10%, 20%, and 30%, resulting in 6.5%, 13.4%, and 22.9% decrease, respectively, in spite of strength improvement. In terms of flexural and splitting tensile strengths, comparable relations were noted. As far as the frost resistance test results are concerned, the mass losses in all examined concretes were not significant, reaching up to 0.5%. The strength reduction in the case of the first three series of concretes was below 3%. When the CKD addition was increased to 20% and 30%, the value of the dynamic modulus of elasticity Ec,s decreased to a greater degree, by 8.0% and 14.7%, respectively. The hydrophobization effect is best seen in CKD-free concrete. After the impregnation, the loss of mass following the frost test of the samples is reduced by half. With a higher CKD content, the hydrophobization effectiveness is insignificant. The most favourable results were observed for hydrophobization with the oligomer-based preparation A1. Š 2024, Politechnika Lubelska. All rights reserved.
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Nr opisu: 0000045243 Autorzy: Danuta Grażyna Barnat-Hunek, Wojciech Andrzejuk, Małgorzata Szafraniec, Magdalena Kachel, Robert Hunek. Tytuł pracy: Modification of Concrete Surface with Higher Fatty Acids Tytuł czasopisma: Szczegóły: 2023, Vol. 17, issue 2, p. 307--321 p-ISSN: 2080-4075 e-ISSN: 2299-8624 Charakterystyka formalna: artykuł w czasopiśmie polskim Charakterystyka merytoryczna: artykuł oryginalny naukowy Charakterystyka wg MNiSW: artykuł w czasopiśmie z IF (wykaz MEiN) Język publikacji: ENG Wskaźnik Impact Factor ISI: 1.100 Punktacja ministerstwa: 100.000 Słowa kluczowe ang.: contact angle ; higher fatty acids ; hydrophobic agent ; hydrophobization ; water tightness ; vapor permeability http://www.astrj.com/Modification-of-Concrete-Surface-with-Higher-Fatty-Acids,159722,0,2.html DOI: 10.13913/22998624/159722 Streszczenie: The research presented in the paper concerns the production of innovative hydrophobizing agents and demonstration their effectiveness on a concrete surface. The starting materials are based on natural oils, water-soluble silanes and siloxanes, and/or tap water. Aqueous preparations are characterized by properties which reduce the impact of volatile organic compounds (VOCs) on the environment, as they consist only of biodegradable components. Studies have shown that the higher fatty acids from vegetable oils and derived from the glycerin phase can be used as a component of concrete hydrophobizing agents, meeting the standard requirements for such agents. Analysis of the use of vegetable oil as a base compound for the production of industrial agents provides at least 95% confidence in its biodegradability. The reference concrete after the frost resistance test showed a weight loss of 1.8%. In the case of hydrophobization, the weight loss was 33.3 to 72% less than the reference samples. In the case of concrete hydrophobized with the glycerin agents, the salt crystallization occurred inside the structure of the material without causing any damage, with the reference concrete showing a weight loss of 0.8%. Projekt/grant: Sposób wytwarzania biodegradowalnych środków hydrofobizujących do betonu i cegły ceramicznej na bazie olejów naturalnych i bionanocelulozy : Regulamin wsparcia rozwoju zawodowego pracowników uczelni, PB/9/2021
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Nr opisu: 0000028189 Autorzy: Stanisław Bogdan Fic, Danuta Grażyna Barnat-Hunek, Agnieszka Monika Karwacka. Tytuł pracy: Waterproof impregnation of ceramic brick with emulsions of low VOC content Tytuł całości: W: Modern materials, installations and construction technologies / ed. by Stanisław Fic Miejsce wydania: Biała Podlaska Wydawca: Wydawnictwo PSW JPII Rok wydania: 2013 Strony zajęte przez pracę: S. 156-164 ISBN: 978-83-61044-39-0 Charakterystyka formalna: rozdział w monografii polskiej Charakterystyka wg MNiSW: rozdział w monografii - j. kongres. lub podst. dla dyscypliny Język publikacji: ENG Punktacja ministerstwa: 5.000 Liczba znaków: 23668 Liczba arkuszy: 0,59 Praca recenzowana Słowa kluczowe: cegła ceramiczna ; hydrofobizacja ; związki krzemoorganiczne ; wodoodporność ; mrozoodporność ; lotne związki organiczne Słowa kluczowe ang.: ceramic brick ; hydrophobization ; organosilicon compunds ; waterproof ; frost-resistance Uwaga: sygn. 14757 XXVI CZYT. C ; 14758 XXVI CZYT. C [sprawdź dostępność w katalogu AB] Streszczenie: The aim of the research presented in the paper was to evaluate the feasibility of using hydrophobizing preparations based on organosilicon compunds for impregnation of ceramic bricks. The process of surface hydrophobization both using solvents and water substances was analyzed. The effectiveness of four preparations which different in terms of hydrolytic polycondensation degree, viscosity and concentration, as these are the factors that are decisive as far as the end results of hydrophobization is concerned. The following laboratory tests were performed: the analysis of physical properties of the tested materials, water drop absorption test, water absorption by weight of the hydrophobized samples, water vapour diffusion, frost resistance, the analysis of silica gel properties in electron microscopy. Based on the results of the above mentioned, the analysis of effectiveness and desirability of hydrophobization using emulsion with a low VOC content was carried out.
