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New economical solutions for improvement of durability of Portland cement mortars reinforced with sisal fibres

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Abstract

Research has been carried out with the aim of solving the problem of vegetable fibre mineralization in Portland cement mortars. It consists of two parts. The first part deals with pore sealing, mechanical strength and alkaline reduction; the second with fibre impregnation including a short description of the compounds used and the ageing of mortars, with or without admixtures, which are reinforced with sisal fibres impregnated or unimpregnated under different conditions. Products used in this solution are mainly compounds derived from timber, insoluble in water and unextractable by water or water vapour. The results of the research look promising.

Resume

On a entrepris une recherche expérimentale afin de résoudre le problème de la minéralisation des fibres végétales dans les mortiers de ciment Portland. L’étude se divise en deux parties. Elle traite d’abord des questions suivantes: obturation des pores, résistances mécaniques et réduction alcaline; ensuite, de l’imprégnation des fibres avec une courte description des mélanges utilisés et du vieillissement des mortiers, avec ou sans adjuvants, renforcés de fibres de sisal imprégnées ou non dans différentes conditions. Les produits utilisés dans cette solution sont principalement des composés dérivés du bois, insolubles dans l’eau et non extractibles par l’eau ou la vapeur d’eau. Les résultats de cette recherche ouvrent des perspectives.

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References

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  2. Canovas, M. F., Kawiche, G. M. and Selva, N. H., ‘Possible ways of preventing deterioration of vegetable fibres in cement mortars’, in Proceedings of 2nd International RILEM Symposium (Chapman & Hall, London, 1990) pp. 120–129.

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  3. Canovas, M. F., Selva, N. H. and Kawiche, G. M., ‘Influence on the physical-mechanical properties of Portland cement mortars of admixtures of colophony and tannin’, in ‘Material de Construcción’ (Instituto Eduardo Torroja, Madrid, 1989).

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  4. Selva, N. H., ‘Extraccion de Ag(I) y Cd(II) con Acidos Resinicos’, doctoral thesis, Universidad Complutense de Madrid, Facultad de Ciencias Quimicas (1987).

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Canovas, M.F., Selva, N.H. & Kawiche, G.M. New economical solutions for improvement of durability of Portland cement mortars reinforced with sisal fibres. Materials and Structures 25, 417–422 (1992). https://doi.org/10.1007/BF02472258

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  • DOI: https://doi.org/10.1007/BF02472258

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