Zobrazeno 1 - 10
of 63
pro vyhledávání: '"Džigita Nagrockienė"'
Publikováno v:
The Baltic Journal of Road and Bridge Engineering, Vol 18, Iss 2, Pp 205-222 (2023)
The article presents a continuation of research results on numerical modelling of displacement pile prototype ground (sand) resistance. Numerical modelling of ground resistance consists of three stages: restitution of initial soil stress state, the r
Externí odkaz:
https://doaj.org/article/de00cb5e669444099bdb7feaa8366aee
Publikováno v:
Buildings, Vol 13, Iss 12, p 3015 (2023)
The results of this research show that high-alkali biofuel fly ash (BFA) had a significant influence on the mechanical characteristics, microstructure, porosity, freezing–thawing cycle resistance, and ASR resistance of cementitious materials. Diffe
Externí odkaz:
https://doaj.org/article/e300d4beb3bb411baa8cf15664bfb53d
Publikováno v:
The Baltic Journal of Road and Bridge Engineering, Vol 16, Iss 1, Pp 77-90 (2021)
Accuracy of numerical modelling of ground resistance of the displacement pile highly depends on proper evaluation of its states: prior loading and its changes during the loading. Evaluation of initial ground stage, its subsequent changes caused by pi
Externí odkaz:
https://doaj.org/article/dc3dd84d6ab34a2da995457bf51619fb
Autor:
Deividas Augutis, Džigita Nagrockienė
Publikováno v:
Mokslas: Lietuvos Ateitis, Vol 11 (2019)
Materials used for the study: Portland cement CEM I 42,5 R, 0/4 fraction sand, 4/16 fraction gravel, biofuel fly ash, superplastizer ViscoCrete D187 (V) and water. Seven compositions of concrete were designed by replacing 0%, 5%, 10%, 15%, 20%, 25% a
Externí odkaz:
https://doaj.org/article/98eaf677378240ed8270a6b2014b0050
Autor:
Džigita NAGROCKIENĖ, Albinas GAILIUS, Gintautas SKRIPKIŪNAS, Ina PUNDIENĖ, Giedrius GIRSKAS, Anastasija ABASOVA
Publikováno v:
Medžiagotyra, Vol 19, Iss 3, Pp 337-342 (2013)
The article analyzes the effect of plasticizing admixture content on the physical and mechanical properties of concrete made of 50 % coarse aggregate. The plasticizer dosage levels proposed by the manufacturer (0.2 % – 1.2 %) were examined and the
Externí odkaz:
https://doaj.org/article/fd7a933d71a04fb5aad1a25b2453d935
Autor:
Gintautas SKRIPKIŪNAS, Džigita NAGROCKIENĖ, Jadvyga KERIENĖ, Eugenijus JANAVIČIUS, Giedrius GIRSKAS, Algimantas ŠPOKAUSKAS
Publikováno v:
Medžiagotyra, Vol 19, Iss 1, Pp 108-114 (2013)
This article analyses the results of the freezing – thawing with deicing salt test where changes in the microstructure of the surface layer in contact with aggressive environment of hardened cement paste produced with and without sodium silicate (h
Externí odkaz:
https://doaj.org/article/60e4a81321fd4a65ba7d30f30dd8889e
Publikováno v:
The Baltic Journal of Road and Bridge Engineering, Vol 11, Iss 3 (2016)
Concrete paving blocks that were started to be used in the last century have become very popular. They became an alternative to the natural stone. Concrete paving blocks are used for the paving of pedestrian and vehicle zones. Durability is one of th
Externí odkaz:
https://doaj.org/article/d2c8ea673b284471919a2bad3d193f3d
Publikováno v:
Mokslas: Lietuvos Ateitis, Vol 7, Iss 5 (2016)
Cement as the binding agent in the production of concrete can be replaced with active mineral admixtures. Biofuel combustion fly ash is one of such admixtures. Materials used for the study: Portland cement CEM I 42.5 R, sand of 0/4 fraction, gravel o
Externí odkaz:
https://doaj.org/article/37b3b2b02bf946bbb77e31c78de35dc8
Publikováno v:
The Baltic Journal of Road and Bridge Engineering, Vol 7, Iss 4, Pp 269-276 (2012)
Concrete is widely used in the structures of bridges, flyovers, sidewalks and carriageways that are exposed to freeze-thaw cycles in wet conditions and are treated with de-icing salts. Tests were made to examine the effect of sodium silicate solution
Externí odkaz:
https://doaj.org/article/ef128a5fafd045a99d77710eaacdafdb
Publikováno v:
Medžiagotyra, Vol 17, Iss 2, Pp 203-207 (2011)
Frost resistance is one of the key indicators of concrete quality. Frost resistance can be determined by direct testing; however it is time-consuming and labour-intensive method. Concrete decomposition is a complex process (from initial signs of degr
Externí odkaz:
https://doaj.org/article/b7a75f19c27d4d2d8f9f0d5b23d1695e