https://nova.newcastle.edu.au/vital/access/ /manager/Index ${session.getAttribute("locale")} 5 https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:37866 Wed 26 May 2021 13:05:02 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:51019 Wed 16 Aug 2023 10:38:02 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:48354 Wed 15 Mar 2023 10:52:37 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:44359 Wed 12 Oct 2022 08:39:29 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:48661 Wed 07 Feb 2024 16:41:32 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:30457 Tue 28 Jan 2020 16:27:00 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:36027 Tue 28 Jan 2020 16:23:09 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:31261 Tue 28 Jan 2020 16:22:32 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:44537 Tue 18 Oct 2022 08:32:39 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:41185 Thu 28 Jul 2022 11:05:25 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:34020 Thu 21 Mar 2024 09:13:50 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:47429 Thu 19 Jan 2023 16:12:35 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:37231 Thu 13 Oct 2022 16:54:43 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:37863 Thu 13 Jul 2023 12:28:57 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:37861 Thu 08 Jun 2023 15:27:16 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:47792 Thu 08 Feb 2024 10:39:54 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:44053 Thu 06 Oct 2022 15:55:08 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:37860 Mon 29 Jan 2024 17:48:15 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:48107 Mon 27 Feb 2023 15:03:53 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:34044 Mon 04 Feb 2019 15:02:17 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:42617 Fri 26 Aug 2022 15:54:24 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:34244 Fri 21 May 2021 11:16:25 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:34745 Fri 19 Aug 2022 13:06:17 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:42237 2O₃ (NA) as solid precursors and 10 M sodium hydroxide (SH) and sodium silicate (SS) with a ratio of SS/SH = 2.5 as alkaline solution. NA amount is 20% of total volume of the binder for all mixtures. Scoria particles are used as lightweight aggregates (LWA) with replacement ratio of 0, 10 and 20% by volume of the total aggregates. Polypropylene (PP) fibers is added to the mixture with the amount of 0, 0.5 and 1% by the volume of the binder. Compressive and flexural strength, density, water absorption and rapid chloride permeability test (RCPT) were evaluated. Results indicated that PP fibers improves the mechanical properties (especially flexural strength) while incorporation of LWA reduced the compressive and flexural strength slightly. Water absorption of geopolymer samples decreased by the incorporation of PP fibers which can compensate significantly the negative impact of LWA replacement. Replacement of 10% LWA does not have significant impact on water absorption and chloride permeability of composites; however, 20% replacement reduced durability. Introduced lightweight geopolymer concrete would be suitable for structural applications due to its relatively low density, high compressive strength and good flexural strength, which is improved by adding PP fibers.]]> Fri 19 Aug 2022 11:49:48 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:37862 Fri 12 Apr 2024 11:03:10 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:34637 50 and V-funnel tests were carried out on fresh SCCs. The hardened properties of SCCs included compressive strength, flexural strength, tensile strength, water absorption and electrical resistivity were studied. Moreover, Scanning Electron Microscope (SEM) was employed in order to investigate the microstructure of the cement matrix. Results revealed that NC had a significant influence on compressive strength, water absorption and electrical resistivity of SCCs. The replacement of cement with a combination of 3% NC and 0.3% PP fibre gave better mechanical and durability performances than the other samples. However, the compressive strength reduced slightly when PP fibres were added to the concrete. SEM images illustrated that NC refined the pores of cement matrix and thus resulting in low permeability. Also, it is evident from the SEM images that PP fibres would improve the properties of SCCs by bridging across the cracks. Apparently, the inclusion of 3% NC and 0.3% PP can be considered as an appropriate combination regarding the fresh and hardened properties of concrete. Furthermore, three support vector machine (SVM) approaches were used to predict the compressive strength based on the mix proportions. The results demonstrated that the Wavelet Weighted Least Square SVM (WWLSSVM) and Least Square SVM (LSSVM) models gave more accurate prediction than standard Support Vector Machine (SVM).]]> Fri 05 Apr 2019 15:31:52 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:45590 Fri 04 Nov 2022 10:42:47 AEDT ]]>