Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Experimental research on a feasible rice husk/geopolymer foam building insulation material
Highlights An environmental friendly insulation using rice husk as aggregate was analyzed. H2O2 was used as chemical foaming agent for the foaming of the geopolymer. Several key parameters, e.g R/S, F/S, and Wp/R were investigated in details. The material got high thermal insulation, low density and high compressive strength.
Abstract Bio-insulation materials have attracted increasing attention in building energy saving field, for they have low thermal conductivity, renewable and environmental friendly characters. The authors carried out experimental research on a novel bio-insulation, which was prepared by using rice husk and metakaolin as raw materials, hydrogen peroxide as foaming agent. This study discussed the effect of rice husk/geopolymer mass ratio (R/S), foaming agent/geopolymer mass ratio (F/S) and prewetting water/rice husk mass ratio (Wp/R) on the density, thermal conductivity, high temperature resistance, compressive strength, and water and moisture absorption properties. The experimental results showed that the density of the rice husk/geopolymer foam composite ranges from 174 to 813 kg/m3, and the thermal conductivity ranges from 0.082 to 0.184 W/(m.K) with the compressive strength varying from 0.26 to 7.24 MPa. In addition, the water and moisture absorption rates are in the range of 28.3–93.6% and 9.7–18.6%, respectively. The new composite showed a satisfying performance and can be used in buildings to realize energy saving.
Experimental research on a feasible rice husk/geopolymer foam building insulation material
Highlights An environmental friendly insulation using rice husk as aggregate was analyzed. H2O2 was used as chemical foaming agent for the foaming of the geopolymer. Several key parameters, e.g R/S, F/S, and Wp/R were investigated in details. The material got high thermal insulation, low density and high compressive strength.
Abstract Bio-insulation materials have attracted increasing attention in building energy saving field, for they have low thermal conductivity, renewable and environmental friendly characters. The authors carried out experimental research on a novel bio-insulation, which was prepared by using rice husk and metakaolin as raw materials, hydrogen peroxide as foaming agent. This study discussed the effect of rice husk/geopolymer mass ratio (R/S), foaming agent/geopolymer mass ratio (F/S) and prewetting water/rice husk mass ratio (Wp/R) on the density, thermal conductivity, high temperature resistance, compressive strength, and water and moisture absorption properties. The experimental results showed that the density of the rice husk/geopolymer foam composite ranges from 174 to 813 kg/m3, and the thermal conductivity ranges from 0.082 to 0.184 W/(m.K) with the compressive strength varying from 0.26 to 7.24 MPa. In addition, the water and moisture absorption rates are in the range of 28.3–93.6% and 9.7–18.6%, respectively. The new composite showed a satisfying performance and can be used in buildings to realize energy saving.
Experimental research on a feasible rice husk/geopolymer foam building insulation material
Wang, Shuang (Autor:in) / Li, Hongqiang (Autor:in) / Zou, Si (Autor:in) / Zhang, Guoqiang (Autor:in)
Energy and Buildings ; 226
27.07.2020
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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