Elaboration of eco-efficient vegetable fibers reinforced cement-based composites using glass powder residue

Autor(es)

Rodier, Loic ^[1] ; Correia, Viviane Costa ^[1] ; Junior, Holmer Savastano ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Av Duque Caxias Norte 225, BR-13635900 Pirassununga, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: CEMENT & CONCRETE COMPOSITES; v. 110, JUL 2020.
• Citações Web of Science: 0

Resumo

This study evaluates the potential use of glass powder residue as partial replacement of cement in the fibers cement industry. Fibers cement composites were elaborated according to slurry dewatering method. Three formulations were studied; two cementitious matrices with a partial replacement of cement by glass powder residue (20 and 50% by weight) and a cementitious matrix with a partial replacement of cement by 20% by weight of limestone (commonly used as mineral addition in the fibers cement industry). The effect of these mineral additions on the cement hydration was evaluated using isothermal calorimetry. Physico-mechanical properties of the composites were determined at 8 days and after durability tests. Moreover, the potential application of the glass powder residue into the fibers cement industry was evaluated by determine the energy demand of the production of cement and the energy performance of fibers cement composites elaborated from the glass powder residue. The results showed that cement pastes containing the glass powder residue present a higher heat of hydration in comparison to the control. The partial replacement of cement by 50% by weight of glass powder residue increases the flexural strength of composites at 8 days and after durability tests. The results also showed that the production of 1 ton of cement partially replaced by glass powder residue requires lower energy than the cement partially replaced by limestone. Finally, according to the study, the use of the glass powder residue in production of fibers cement composites can provide important technical, environmental and economic benefits. (AU)

• Processo FAPESP: 15/21079-0 - Obtenção de celulose nanofibrilada de bambu e seu potencial como reforço para matrizes frágeis
• Beneficiário: Viviane da Costa Correia
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 16/14331-7 - Resíduos agroindustriais em compósitos de fibrocimento para a construção civil: uso de adições minerais para melhoria da interface fibra-matriz
• Beneficiário: Loic Barbara Rodier
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado