Compatibility of vegetable fibers with Portland cement and its relationship with the physical properties

Revista Brasileira de Engenharia Agrícola e Ambiental

Luzardo, Francisco H. M.³  Lima, Wellington G. de³  Silva, Everton J. da²  Velasco, Fermin G.³  Marques, Maria L.²  González, Luis Nieto¹ 

[1] Universidade Estadual do Sudoeste da Bahia, Itapetinga, Brazil;Instituto Federal de Educação, Ciência e Tecnologia da Bahia, Eunápolis, Brazil;Universidade Estadual de Santa Cruz, Ilhéus, Brazil

关键词:  aptness;    composite;    lignocellulosic materials;    hydrationRESUMOA utilização de resíduos de fibras vegetais em matrizes cimentícias pode ser uma alternativa tecnológica sustentável porém ainda apresenta problemas relacionados com a compatibilidade química entre o cimento e a fibra;   

DOI  :  10.1590/1807-1929/agriambi.v20n5p466-472

学科分类：农业科学（综合）

来源: Universidade Federal de Campina Grande * Centro de Ciencias e Tecnologia

【 摘 要 】

The use of vegetable fiber residue in cementitious matrices can be a sustainable technological alternative; however, it still has problems related to the chemical compatibility between the cement and the fibers. The present study evaluated the compatibility of vegetable fibers with cement using three methods of calculation and determined certain physical properties of the fibers and the curve of the temporal evolution of temperature for each composite. The surfaces of the composites were evaluated through atomic force microscope images and the results showed that the pretreatment of fiber washing significantly favors the compatibility with cement for fibers of eucalyptus, coconut and cocoa, with no influence for water hyacinth fiber. Bivariate correlation analyses showed that the compatibility of the composites is favored by the reduction in the degree of swelling, packing density and specific mass. The results showed that there is a potential use of plant fiber in civil construction and that the physical properties of each type of fiber can offer elements for its selection and pretreatment.

【 授权许可】

Unknown