Results 41 to 50 of about 97 (93)

Modelling the carbonated concrete realkalization

open access: yesJournal of Civil Engineering and Management, 2009
The presented model of carbonated concrete realkalization is compiled on the basis of the multi‐component medium theory equations. The process equations have been obtained from an analysis of the partial equations of mass, electric charge, momentum ...
Mariusz Jaśniok, Adam Zybura
doaj   +1 more source

The effects of seawater on the durability of hydrotechnical (concrete) structures in the port of Klaipeda / Jūros vandens poveikis klaipėdos uosto hidrotechninių statinių (betono) ilgaamžiškumui

open access: yesEngineering Structures and Technologies, 2013
Seawater has a significant impact on hydrotechnical concrete structures in the Port of Klaipeda. This factor must be properly examined and evaluated designing reinforced concrete structures exploited in seawater.
Ramunė Lebedeva   +2 more
doaj   +1 more source

Stress‐strain concentrations in high‐rise structure elements and monotonic disintegration under the influence of environment contamination

open access: yesJournal of Civil Engineering and Management, 2005
Abundance of metal masts and towers, their aging require to pay attention to corrosion phenomena and their after‐affects. Special attention should be paid to the changes of structural elements strength and strain (induced by the environment ...
Valerijus Keras   +2 more
doaj   +1 more source

Accelerated carbonation depth test in an atmosphere of 98% CO2

open access: yesEngineering Structures and Technologies, 2011
The action of atmospheric carbon dioxide is one of the agents which substantially reduce the durability of concrete structures. Th is so called carbonation is one of the corrosive processes influencing properties of mature concrete.
Michal Stehlík
doaj   +1 more source

The Role of Epikarst in the Morphogenesis of the Karstic Forms, Especially Hollow Forms in Greece

open access: yesActa Carsologica, 2016
Vloga epikrasa pri nastanku podtalnih škrapelj in kraških depresij, je različna. Prevotljene škraplje in podtalne škraplje tipa »kluftkarren« so prekrite s kraško prstjo in kažejo na delovanje vode.
Kyriaki Papadopoulou-Vrynioti
doaj   +1 more source

KOROZIJA POCINČANIH CIJEVI IZLOŽENIH VODI

open access: yesZavarivanje, 2018
Vruće pocinčane zavarene ( šavne ) cijevi od ugljičnog čelika koriste se u razvodnim mrežama za potrošnu slatku vodu tj.za hladnu pitku vodu te za hladnu i toplu sanitarnu vodu. Pritom, na cinku nastaju slojevi korozijskih produkata ( npr.bazičnog Zn-karbonata ) koji štite i cink i čelik od daljnje korozije.
Esih, Ivan   +3 more
openaire   +2 more sources

Uticaj brzine depozicije praha na mehaničke karakteristike i strukturu APS-NiCr/Al prevlake / Effect of the powder deposition rate on the mechanical properties and the structure of the APS-NiCr/Al coating

open access: yesVojnotehnički Glasnik, 2010
U radu su prikazani rezultati ispitivanja atmosferskih plazma-sprej prevlaka APS-NiCr/Al. Kompozitni prah NiCr/Al koji se sastoji od NiCr čestica obloženih finim česticama Al u procesu depozicije omogućuje egzotermnu reakciju. Reakcija ovih metala dovodi
Mihailo R. Mrdak
doaj   +1 more source

Mineral waters of Serbia and development of phototrophic microbial communities near points of emergence and on wellheads

open access: yesActa Carsologica, 2017
Phototropic microorganisms in thermal mats had not attracted enough attention in Serbia in the past. The research presented in this paper is the first to address biofilms at selected occurrences of mineral water in Serbia (Bogatić, Metković and Belotić ...
Vladimir Šaraba   +5 more
doaj   +1 more source

Research frontiers in speleogenesis. Dominant processes, hydrogeological conditions and resulting cave patterns

open access: yesActa Carsologica, 2015
Speleogenesis is the development of well-organized cave systems by fluids moving through fissures of a soluble rock. Epigenic caves induced by biogenic CO2 soil production are dominant, whereas hypogenic caves resulting from uprising deep flow not ...
Philippe Audra, Arthur N. Palmer
doaj   +1 more source

Napetosna korozija turbinskih diskova

open access: yesEngineering review, 1998
Suvremeni razvoj energetike karakterizira gradnja parnih turbina velikih snaga. Većina rotora niskih tlakova takovih turbina je koncipirana s navučenim diskovima. Rotori s takovim diskovima koji rade u području granične krivulje vodene pare imaju u eksploataciji problema zbog napetosne korozije.
Staniša, Branko, Pomenić, Loreta
openaire   +1 more source

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