Thermal performance of sisal fiber-cement roofing tiles for rural constructions

Scientia Agricola

Gustavo Henrique Denzin Tonoli²  Sérgio Francisco Dos Santos¹  José Antonio Rabi¹  Wilson Nunes Dos Santos¹  Holmer Savastano Junior¹ 

[1] ,USP FZEA Programa de Pós-graduação em ZootecniaPirassununga SP ,Brasil

关键词: cellulose pulp;    polypropylene fiber;    thermal comfort;    parallel hot-wire method;    thermal conductivity;    polpa de celulose;    fibras de polipropileno;    conforto térmico;    método do fio quente paralelo;    condutividade térmica;   

DOI  :  10.1590/S0103-90162011000100001

来源: SciELO

【 摘 要 】

Roofing provides the main protection against direct solar radiation in animal housing. Appropriate thermal properties of roofing materials tend to improve the thermal comfort in the inner ambient. Nonasbestos fiber-cement roofing components reinforced with cellulose pulp from sisal (Agave sisalana) were produced by slurry and dewatering techniques, with an optional addition of polypropylene fibers. Nonasbestos tiles were evaluated and compared with commercially available asbestos-cement sheets and ceramic tiles (frequently chosen as roofing materials for animal housing). Thermal conductivity and thermal diffusivity of tiles were determined by the parallel hot-wire method, along with the evaluation of the downside surface temperature. Cement-based components reinforced with sisal pulp presented better thermal performance at room temperature (25ºC), while those reinforced with sisal pulp added by polypropylene fibers presented better thermal performance at 60ºC. Non-asbestos cement tiles provided more efficient protection against radiation than asbestos corrugated sheets.

【 授权许可】

CC BY   
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