Sinha, Arkabrata Tatar, Nikola Tatar, Jovan
Published in
Materials and Structures
Concrete girders can suffer from serviceability issues due to excessive cracking and deflection. In response to this problem, a novel heat-induced post-tensioning technique utilizing unbonded near-surface mounted nickel–titanium–niobium (NiTiNb) shape-memory alloy (SMA) wires was proposed and evaluated. SMAs are a class of smart materials that can ...
Masoud, M. A. Rashad, Alaa M. Sakr, K. Shahien, M. G. Zayed, A. M.
Published in
Materials and Structures
This work is the first attempt to study the possibility of incorporating three different types of Egyptian serpentine aggregates (antigorite, lizardite and chrysotile) with different serpentinization grades as fine and coarse aggregates for normal concrete production. The results of physical and mechanical tests for each type of aggregate were comp...
Chore, Hemant S. Joshi, Mrunal P.
Published in
Innovative Infrastructure Solutions
The excessive use of cement in the construction industry has caused many undesirable consequences. Replacement of cement with industrial by-products like fly ash (FA), ground granulated blast furnace slag (GGBFS), silica fume (SF), metakaolin, rice husk ash, etc., as the mineral admixtures offers several advantages in this modern era of sustainabil...
Boshoff, William Mechtcherine, Viktor Snoeck, Didier Schröfl, Christof De Belie, Nele Ribeiro, António Bettencourt Cusson, Daniel Wyrzykowski, Mateusz Toropovs, Nikolajs Lura, Pietro
...
Published in
Materials and Structures
This article presents the results of an inter-laboratory study performed by six international research groups in the framework of RILEM Technical Committee 260 RSC “Recommendations for use of superabsorbent polymers in concrete construction”. Two commercially available superabsorbent polymer (SAP) samples with different chemical compositions were t...
šulc, vojtěch
Ve své bakalářské práci se věnuji návrhu lávky přes řeku Vltavu v lokalitě Kralupy nad Vltavou. V první části se zabývám návrhy a volbou vhodné varianty přemostění. V dalších částech provádím parametrickou studii na téma trámových a rámových mostů se zaměřením na vzpěradlové konstrukce. Následně vybírám výslednou upravenou vzpěradlovou variantu, kt...
Savić, A. Martinović, S. Vlahović, M. Volkov-Husović, T.
Self-compacting concrete (SCC) contains fine mineral fillers such as limestone powder. The idea of this study was to partially replace limestone with waste sulfur since it is hydrophobic, insoluble in water and therefore chemically inert and to compare the properties of produced concrete samples. Fresh concrete properties included: slump-flow, t50...
Chen, P. Chen, X. Wang, Y. Wang, P.
This study proposes a method to convert non-structural calcium-rich construction and demolition waste fines into adsorbents of heavy metal ions by mixing waste fines with diammonium hydrogen phosphate solution to produce hydroxyapatite, which has high surface areas and excellent ion-exchange capacity with heavy metal ions. As a result, environmen...
Liu, Zhuang Worley, Robert II Du, Fen Giles, Courtney D. Dewoolkar, Mandar Huston, Dryver Tan, Ting
Published in
Materials and Structures
In this work, we studied stress variations occurring during flexure of early-age steel fiber reinforced concrete beams. By preparing beams with different fiber volume ratios, four-point bending tests were performed to evaluate the specimens at different loading rates. A new experimental system was created to collect the stress-time curves collected...
bindr, tomáš
Bakalářská práce se zabývá mezerovitým betonem, který představuje možnost propuštění vody do podloží i v husté městské zástavbě. Zhodnocuje možnou technickou proveditelnost v podmínkách českých měst a pojednává o možné ekonomické úspoře. / The bachelor's thesis deals with Permeable concrete, which introduces the possibility of releasing water into ...
vaněček, jan
Bakalářská práce se zabývá komplexním přehledem šikmých železobetonových konstrukcí. Úvodní část obsahuje poznatky z literatury, jednotlivé případy jsou komentovány příklady z praxe. Dále jsou zde shrnuty a rozebrány dílčí části konstrukce z hlediska statického působení. Velká část práce je věnovaná bednění monolitických konstrukcí, včetně šikmých ...
