Baza Publikacji Pracowników Politechniki Lubelskiej

Status:
Autorzy:	Grzegorczyk-Frańczak Małgorzata, Andrzejuk Wojciech, Hunek Robert, Łagód Grzegorz
Dyscypliny:
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Rok wydania:	2024
Wersja dokumentu:	Elektroniczna
Język:	angielski
Numer czasopisma:	3
Wolumen/Tom:	18
Strony:	214 - 233
Impact Factor:	1,0
Web of Science® Times Cited:	0
Scopus® Cytowania:	0
Bazy:	Web of Science \| Scopus \| BazTech
Efekt badań statutowych	NIE
Finansowanie:	This work was financially supported by the Ministry of Science and Higher Education – Poland, within the project no. DWD/7/0365/2023, the research project no. PB/1/2023 implemented with funds under the “Regulations for the support of professional development of university employees of the John Paul II University in Biała Podlaska for the year 2023” and by the Doctoral School at the Lublin University of Technology, individual grant: Szkoła Doktorska – Grant – Małgorzata Grzegorczyk-Frańczak.
Materiał konferencyjny:	NIE
Publikacja OA:	TAK
Licencja:
Sposób udostępnienia:	Otwarte czasopismo
Wersja tekstu:	Ostateczna wersja opublikowana
Czas opublikowania:	W momencie opublikowania
Data opublikowania w OA:	20 kwietnia 2024
Abstrakty:	angielski
	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.

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Effect of Surface Hydrophobization on the Durability of Concrete with Cement Kiln Dust

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