Influence of selected parameters of cement concrete composition on its gas permeability = Wpływ wybranych parametrów składu betonu cementowego na jego gazoprzepuszczalność / Jacek Śliwiński, Tomasz ... więcej

Influence of selected parameters of cement concrete composition on its gas permeability = Wpływ wybranych parametrów składu betonu cementowego na jego gazoprzepuszczalność / Jacek Śliwiński, Tomasz Tracz, Tomasz Zdeb // W: Recent advances in civil engineering : building materials and building physics / ed. by Jacek Śliwiński ; Politechnika Krakowska im. Tadeusza Kościuszki. – Kraków : Wydaw. PK, 2015. – (Monografia / Politechnika Krakowska im. Tadeusza Kościuszki. Inżynieria Lądowa). – S. 97-118 : rys., tab., wykr. – Bibliogr. 13 poz., Abstr., Streszcz. – Seria gł.: Monografia / Politechnika Krakowska im. Tadeusza Kościuszki, ISSN 0860-097X ; 479

The studies presented in the article concern twelve types of concrete with varied compositions in terms of the type of cement used, water-cement ratio, paste content and the type of coarse aggregate used. ... więcej

The studies presented in the article concern twelve types of concrete with varied compositions in terms of the type of cement used, water-cement ratio, paste content and the type of coarse aggregate used. Permeability was determined using the RILEM-Cembureau laboratory method for nitrogen flow. This characteristic was determined after 90 days of curing for concretes in two humidity states: in the air- dry and dry states. The results obtained made it possible to assess in quantitative terms the impact of the various concrete composition parameters adopted on gas permeability. The effect of the natural moisture content of concrete in the air-dry state on its permeability was also assessed in quantitative terms. The study results presented provide a basis for a more rational design of concrete composition, taking the required permeability into account.