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BERHANE, Zawde. Effect of natural pozzolanic materials on the durability of natural fibres in mortar. In: SIMPÓSIO INTERNACIONAL SOBRE PRODUÇÃO E TRANSFERÊNCIA DE TECNOLOGIA EM HABITAÇÃO DA PESQUISA À PRATICA, 1987, São Paulo. Anais… São Paulo, 1987. p.73-81.
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Abstract

During the past fifteen years intensive studies and investigations were being carried out on the mechanical proporties of corrugated mortar roofing sheets reinforced with natural fibres such as sisal, jute, coir, etc. Results from such research activities have been published during the past few years. Even though the published research results did not show significant increases in the flexural and other mechanical properties, a pronounced improvement in the ductility and impact resistance of the material were reported. However, recent findings indicated that durability of the material is its main weakness. The problem is more serious in tropical countries than in those located in the temperate regions. The fibres become brittle and weak with time thereby bringing down the positive contribution of the fibres. The present assesses the present state-of-the-art paper critically of the material with special emphasis on its durability, and presents and discusses initial findings received by using local natural pozzolonic materials as partial replacements of Portland cement
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