Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Luffa fibers and gamma radiation as improvement tools of polymer concrete
Highlights Polymer concrete with silicious sand, unsaturated polyester resin and luffa fibers was elaborated. The effects of gamma radiation and the luffa fiber concentration on compressive and flexural properties were studied. We show that the compressive strain and the elasticity modulus are higher than plain concrete. The higher gamma dose provides the highest elasticity modulus.
Abstract This work presents a study on the effects of luffa fibers and gamma radiation as tools for mechanical improvement of polymer concrete based on a polyester resin/foundry sand mixture. Different concentrations of irradiated and non-irradiated fibers (0.3, 0.6 and 0.9wt%) and higher irradiation doses were used. The results show that the compressive strength and flexural strength values decrease gradually when increasing irradiated-fiber concentration, respect to plain concrete (without fibers and non-irradiated). Conversely an opposite effect occurs when polymer concrete is gamma irradiated, i.e. both the degree of polymerization and cross-linking of the polymeric resin are increasing. Moreover, the values for compressive and flexural strain as well as dynamic elasticity modulus increase when increasing irradiated-fiber concentration. The highest bending deformation is obtained with 0.9wt% of fibers and 100kGy of radiation dose.
Luffa fibers and gamma radiation as improvement tools of polymer concrete
Highlights Polymer concrete with silicious sand, unsaturated polyester resin and luffa fibers was elaborated. The effects of gamma radiation and the luffa fiber concentration on compressive and flexural properties were studied. We show that the compressive strain and the elasticity modulus are higher than plain concrete. The higher gamma dose provides the highest elasticity modulus.
Abstract This work presents a study on the effects of luffa fibers and gamma radiation as tools for mechanical improvement of polymer concrete based on a polyester resin/foundry sand mixture. Different concentrations of irradiated and non-irradiated fibers (0.3, 0.6 and 0.9wt%) and higher irradiation doses were used. The results show that the compressive strength and flexural strength values decrease gradually when increasing irradiated-fiber concentration, respect to plain concrete (without fibers and non-irradiated). Conversely an opposite effect occurs when polymer concrete is gamma irradiated, i.e. both the degree of polymerization and cross-linking of the polymeric resin are increasing. Moreover, the values for compressive and flexural strain as well as dynamic elasticity modulus increase when increasing irradiated-fiber concentration. The highest bending deformation is obtained with 0.9wt% of fibers and 100kGy of radiation dose.
Luffa fibers and gamma radiation as improvement tools of polymer concrete
Martínez-Barrera, Gonzalo (Autor:in) / Vigueras-Santiago, Enrique (Autor:in) / Martínez-López, Miguel (Autor:in) / Ribeiro, Maria C.S. (Autor:in) / Ferreira, Antonio J.M. (Autor:in) / Brostow, Witold (Autor:in)
Construction and Building Materials ; 47 ; 86-91
04.05.2013
6 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Luffa fibers and gamma radiation as improvement tools of polymer concrete
| Online Contents | 2013
Luffa fibers and gamma radiation as improvement tools of polymer concrete
| British Library Online Contents | 2013
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| British Library Online Contents | 2019