Incombustibility,physico-mechanical properties and TVOC emission behavior of the gypsum–rice husk boards for wall and ceiling materials for construction |
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| Authors: | Sumin Kim |
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| Affiliation: | 1. Fraunhofer-WKI, Department of Material Analysis and Indoor Chemistry, Bienroder Weg 54E, 38108 Braunschweig, Germany;2. Canakkale Onsekiz Mart University, Environmental Engineering Department, Terzioglu Campus, 17020 Canakkale, Turkey;3. Rockwool International A/S, Hovedgaden 584, DK-2640 Hedehusene, Denmark;1. Department of Forestry, Faculty of Natural Resources, University of Guilan, Rasht, Iran;2. Department of Chemical Technologies, Iranian Research Organization for Science and Technology (IROST), Tehran, Iran;3. Department of Civil Engineering, Faculty of Engineering, University of Guilan, Rasht, Iran;1. Department of Agricultural and Biosystems Engineering, Landmark University, P.M.B.1001 Omuaran, Kwara State, Nigeria;2. Department of Civil and Environmental Engineering, Federal University of Technology Akure, Nigeria;3. Department of Civil Engineering, Landmark University Omuaran, Nigeria;1. Department of Wood and Paper Science and Technology, Faculty of Natural Resources, University of Tehran, Karaj, Iran;2. Department of Forestry, Faculty of Natural Resources, University of Guilan, Rasht, Iran;3. Department of Chemical Technologies, Iranian Research Organization for Science and Technology (IROST), Tehran, Iran;4. Department of Civil Engineering, Faculty of Engineering, Bu-Ali Sina University, Hamedan, Iran;1. ADAI – LAETA, Department of Civil Engineering, University of Coimbra, Pólo II, Rua Luís Reis Santos, 3030-788 Coimbra, Portugal;2. ITeCons – Institute for Research and Technological Development in Construction, Energy, Environment and Sustainability, Rua Pedro Hispano s/ n., 3030-289 Coimbra, Portugal;3. Chemistry Centre, Department of Chemistry, University of Coimbra, Portugal, Rua Larga, 3004-535 Coimbra, Portugal;4. LogAcústica, Consultores Associados, Lda, Largo da UTIC, 100 – F5, 4430-246 Vila Nova de Gaia, Portugal;1. Department of Engineering, University of Perugia, Via G. Duranti 67, 06125 Perugia, Italy;2. Department of Architecture and Civil Engineering, University of Pavia, Via Ferrata 1, 27100 Pavia, Italy |
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| Abstract: | Rice husk is a by-product of rice milling process, and a great resource as a raw biomass material for manufacturing value-added composite products. One of the potential applications is to use rice husk as filler for manufacturing gypsum–rice husk boards for wall and ceiling materials for construction. We investigated the effect of rice husk, addition on selected physico-mechanical properties, total volatile organic compound (TVOC), and incombustibility, on the gypsum board. With increasing rice husk contents, water and moisture absorption was decreased. Because of the replacement of pore between gypsum particles by rice husk, the moisture absorption was decreased as rice husk adding contents. By rice husk adding, MOR of the gypsum–rice husk boards were increased up to 9.8 MPa at 30 wt%. However, MOR was decreased more than 40 wt% of adding contents. The modulus of elasticity (MOE) showed similar behavior with MOR. However, internal bonding strength (IB) was slightly increased as rice husk adding contents up to 20 wt%, 0.5 MPa and decreased over 20 wt%. The incombustibility of the gypsum–rice husk boards decreased on increasing the rice husk adding content. However, up to 30 wt% of rice husk adding contents board samples was of incombustibility first class. Gypsum particle can be replaced up to 30 wt% by rice husk with incombustibility first class for housing materials. In all cases, TVOC emission factor and formaldehyde emission remained under the ‘Excellent’ grade as defined by Korean Air Clean Association (KACA). |
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