Now showing 1 - 3 of 3
  • 2014Journal Article
    [["dc.bibliographiccitation.firstpage","2631"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING"],["dc.bibliographiccitation.lastpage","2640"],["dc.bibliographiccitation.volume","39"],["dc.contributor.author","Hosseinpourpia, Reza"],["dc.contributor.author","Hosseini, Payam"],["dc.contributor.author","Mofidian, S. R."],["dc.contributor.author","Hosseinpourpia, Rezvan"],["dc.contributor.author","Varshoee, A."],["dc.date.accessioned","2018-11-07T09:41:38Z"],["dc.date.available","2018-11-07T09:41:38Z"],["dc.date.issued","2014"],["dc.description.abstract","Developments in the field of green cement-based products are characterized as an important approach to sustainable development and are being devoted much attention by the construction industry. Numerous types of materials are utilized; however, based on other published studies, the use of waste material as a filler normally deteriorates the performance of cementitious products. Appropriate additives thus need to be employed to improve the performances and properties of green products. As a consequence, the aim of this study has been to investigate the properties of a novel green cement-based composite-a hybrid system composed of cement, waste natural fiber, silica nano-particles, and aminosilane. Experiments were performed to assess the physical properties (density and flowability), mechanical properties (compressive strength and bending performance), and microstructural properties (as determined by scanning electron microscopy) of the cement sheets. The results demonstrated an improvement in the mechanical and microstructural properties of green cement-based composites by using this hybrid system."],["dc.identifier.doi","10.1007/s13369-013-0935-0"],["dc.identifier.isi","000335757000019"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/33777"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Springer"],["dc.publisher.place","Heidelberg"],["dc.relation.issn","2191-4281"],["dc.relation.issn","1319-8025"],["dc.title","Influence of Nanosilica on Properties of Green Cementitious Composites Filled with Waste Sulfite Pulp Fiber and Aminosilane"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]
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  • 2012Journal Article
    [["dc.bibliographiccitation.firstpage","105"],["dc.bibliographiccitation.journal","Construction and Building Materials"],["dc.bibliographiccitation.lastpage","111"],["dc.bibliographiccitation.volume","31"],["dc.contributor.author","Hosseinpourpia, R."],["dc.contributor.author","Varshoee, A."],["dc.contributor.author","Soltani, M."],["dc.contributor.author","Hosseini, Payam"],["dc.contributor.author","Tabari, H. Ziaei"],["dc.date.accessioned","2018-11-07T09:10:10Z"],["dc.date.available","2018-11-07T09:10:10Z"],["dc.date.issued","2012"],["dc.description.abstract","The environmental impact of asbestos fibers on human health and their consequent safety-related problems indicate that there is a significant need to replace this material in all asbestos-containing products. Many different types of fibers have been introduced to replace asbestos fibers. In this study, the performance of silica nano-particles combined with waste paper pulp fibers (sulfite fibers) has been investigated. Different mechanical (compressive and flexural strengths and bending performance), durability (water absorption), physical (bulk density and flowability), and microstructural (scanning electron microscopy) tests were conducted to examine the properties of manufactured green composites. The results reveal that the mechanical properties of cement-based composites containing a ternary system of \"natural waste fiber-silica nano-particle cement\" have been enhanced. Adding silica nano-particles allows the development of green cement-based composites and movement toward sustainable development in the concrete industry. (C) 2012 Elsevier Ltd. All rights reserved."],["dc.identifier.doi","10.1016/j.conbuildmat.2011.12.102"],["dc.identifier.isi","000301810300013"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/26431"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Elsevier Sci Ltd"],["dc.relation.issn","0950-0618"],["dc.title","Production of waste bio-fiber cement-based composites reinforced with nano-SiO2 particles as a substitute for asbestos cement composites"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]
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  • 2014Journal Article
    [["dc.bibliographiccitation.firstpage","113"],["dc.bibliographiccitation.journal","Construction and Building Materials"],["dc.bibliographiccitation.lastpage","124"],["dc.bibliographiccitation.volume","66"],["dc.contributor.author","Hosseini, Payam"],["dc.contributor.author","Hosseinpourpia, Reza"],["dc.contributor.author","Pajum, Arash"],["dc.contributor.author","Khodavirdi, Mohammad Mandi"],["dc.contributor.author","Izadi, Hamed"],["dc.contributor.author","Vaezi, Ali"],["dc.date.accessioned","2018-11-07T09:35:16Z"],["dc.date.available","2018-11-07T09:35:16Z"],["dc.date.issued","2014"],["dc.description.abstract","The aim of the present study was to experimentally investigate the interaction between a low replacement ratio of different nano-particles (SiO2, Al2O3, clay, and CaCO3) and aminosilane in the matrices of cement paste and mortar. Results showed that the optimum content of aminosilane for improving the 28-day compressive strength of cement mortar was 0.75% (by weight of the total binder). The utilization of nano-SiO2 and nano-clay particles improved the strengths of the cement mortar containing hybrid systems of nano-particles/aminosilane at early (7 days) and middle curing ages (28 and 91 days). The 28-day compressive strength enhancement of cement mortar with hybrid systems of nano-SiO2/aminosilane and nano-clay/aminosilane was about 19% and 20%, respectively. Additionally, the application of aminosilane with nano-CaCO3 and nano-Al2O3 particles showed lower efficacy on mechanical performance of the cement-based composites in comparison with nano-clay and nano-SiO2. Despite the fact that the utilization of aminosilane with and without different nano-particles enhanced the flowability of the cement paste and mortar, it reduced the electrical resistivity of the cement mortar. In this regard, the minimum electrical resistivity was achieved for specimens with only aminosilane. This reduction was about 19.5% for samples containing 0.75% aminosilane for a curing time of 28 days. (C) 2014 Elsevier Ltd. All rights reserved."],["dc.description.sponsorship","Parsa Chemical Co."],["dc.identifier.doi","10.1016/j.conbuildmat.2014.05.047"],["dc.identifier.isi","000340688200014"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/32347"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Elsevier Sci Ltd"],["dc.relation.issn","1879-0526"],["dc.relation.issn","0950-0618"],["dc.title","Effect of nano-particles and aminosilane interaction on the performances of cement-based composites: An experimental study"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]
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