Browsing by Department "Statybinių medžiagų institutas / Institute of Building Materials"
Now showing items 1-20 of 415
-
A study of rapeseed oil-based polyol substitution with bio-based products to obtain dimensionally and structurally stable rigid polyurethane foam
(Journal of polymers and the environment, 2018)Water-blown polyurethane foams from low functionality polyols are characterized by intensive shrinkage, high density, post blowing, and longer demold time. These drawbacks can be partially, or fully, eliminated by varying ... -
A study on tannery sludge as a raw material for cement mortar
(Materials: Section: Construction and building materials, 2019)The paper analyses the properties (chemical and mineral composition, microstructure, density, etc.) of recycled tannery sludge (TS) and the possibilities for using it in cement mortar mixture. Mortar specimens containing ... -
Acoustic classification of building façades using statistical methods
(Applied acoustics, 2021)Indoor acoustic comfort under existing outdoor noise generally depends on the sound insulation characteristics of the building façade. The importance of the acoustic classification of dwelling façade among the classification ... -
Acoustic comfort in educational buildings: Lithuanian case study
(24th International Congress on Sound and Vibration (ICSV 24), July 23-27, 2017, London, United Kingdom : proceedings, 2017)To ensure the quality of teaching and learning process more attention should be paid to the room acoustics. Excessive reverberation time in educational purpose rooms causes the raised voices and poor speech intelligibility. ... -
Adding granite polishing waste as sand replacement to improve packing density, rheology, strength and impermeability of mortar
(Powder technology, 2020)Reducing waste disposal from stoneware industry and reducing use of sand in construction industry are both important for sustainable development. One strategy to tackle both problems is to utilize the waste from stoneware ... -
Adding granite polishing waste to reduce sand and cement contents and improve performance of mortar
(Journal of cleaner production, 2021)Sand and cement are indispensable ingredients of concrete but their production is causing sustainability problems. Two strategies have been adopted to reduce their consumption, namely, sand replacement with solid waste and ... -
Akustinis komfortas ugdymo pastatuose: reikalavimai ir jų įgyvendinimas
(Mokslinės tarpdalykinės konferencijos "Švietimo architektūra" pranešimų santraukų rinkinys, 2016 m. lapkričio 18 d. VGTU Architektūros fakultetas, Vilnius = Scientific interdisciplinary conference "Educational Architecture" volume of abstracts, 2016)Mokymo ir mokymosi kokybė yra glaudžiai susijusi su akustinėmis patalpos savybėmis. Padidėjusį foninį triukšmą, pakelto balso poreikį ir blogą kalbos suprantamumą dažniausiai lemia per ilga patalpos aidėjimo trukmė. Šioms ... -
Akustinis komfortas: ar šiuolaikiniai pastatai užtikrina gerą garso izoliaciją?
(SA.lt. Statyba ir architektūra, 2021) -
Aliumosilikatinių pucolaninių priedų ir polivinilo alkoholio plaušo poveikis lengvojo kompozito struktūrai, fizikinėms ir mechaninėms savybėms
(2023)Disertacijoje nagrinėjamas aliumosilikatinių pucolaninių priedų (metakaolininės, susidarančios pūsto stiklo granulių gamyboje atliekos ir naftos krekingo katalizatoriaus atliekos) poveikis lengvojo cementinio kompozito su ... -
Alkali-silica reactivity of Portland-composite cements and gravel aggregates
(Ceramics-Silikáty, 2019)The potential alkali-silica reactivity (ASR) of various combinations of Portland-composite cements CEM II/A, and Lithuanian aggregates from three gravel deposits are investigated in this work. These aggregates which contain ... -
An efficient approach to describe the fiber effect on mechanical performance of pultruded GFRP profiles
(Frontiers in materials, 2021)This study focuses on the flexural behavior of pultruded glass fiber-reinforced polymer (GFRP) profiles developed for structural applications. Fiber content is a commonly accepted measure for estimating the resistance of ... -
An experimental study on cracking and deformations of tensile concrete elements reinforced with multiple GFRP bars
(Composite structures, 2018)Although different setups have been developed for analysis of the serviceability properties (cracking and deformations) of reinforced concrete elements, tensile tests are remaining the most often used testing layouts. ... -
Analysis of active and passive deformation of expanded polystyrene foam under short-term compression
(Materials, 2022)In this paper, we undertake a detailed analysis of the active and passive deformation of expanded polystyrene (EPS), which is used as a thermal insulating layer in building partitions, under short-term compressive loading. ... -
Analysis of durability (frost resistance) of MSWI fly ash modified cement composites
(Archives of civil and mechanical engineering, 2021)The research focused on efective utilisation of fy ash (FA) from municipal waste incineration plants. FA was found to have an efect on rheological characteristics (viscosity) of cement pastes, to suppress cement hydration ... -
Analysis of physical and mechanical properties of the mortar in the historic retaining wall of the Gediminas Castle Hill (Vilnius, Lithuania)
(Materials, 2019)This study analysed the results of the joint research into the building materials of the historic masonry of the retaining wall of the Gediminas Castle Hill dating back to the end of the 13th and beginning of the 14th ... -
Analysis of the effect of paper sludge on the properties, microstructure and frost resistance of clay bricks
(Construction and building materials, 2018)The paper analyses the effect of waste sludge from paper industry (paper sludge) on physical and mechanical properties of clay bricks, their microstructure and resistance to freezing and thawing. Paper sludge is not hazardous ... -
Analysis of the formed protective layer inhibiting alkali corrosion in aluminosilicate refractory castables
(Ceramics: Special issue: Advances in ceramics, 2022)This article analyzes the mechanism of the protective layer formation under the action of alkali in a refractory castable when ground quartz sand (GQS) is used as an admixture to produce refractory conventional castables ... -
Analysis of the structure and durability of refractory castables impregnated with sodium silicate glass /
(Ceramics: Special issue: Innovative manufacturing processes of silicate materials., 2023.)This study examines the impact of the impregnation of fireclay-based conventional (CC) and medium-cement castables (MCCs) with liquid sodium silicate glass under vacuum conditions. The goal is to assess how this treatment ... -
Application of green clay materials in sustainable construction: an overview
(Актуальные проблемы архитектуры Белорусского Подвинь и сопредельных регионов: электронный сборник статей международной научно-практической конференции (Новополоцк, 26–27 ноября 2020 г.), 2020)This article provides an overview of current trends in sustainable environmental development in the production of building materials. The first part of the article is devoted to the compari-son of the most popular building ... -
Application of paper sludge and clay in manufacture of composite materials: Properties and biological susceptibility
(Journal of building engineering, 2022)With the aim of developing composite materials to be used on indoor wall systems, different composite materials (paper sludge (100 wt%) and paper sludge (60 wt% and 80 wt%) + clay (20 wt% and 40 wt%) were produced. Composite ...