2019-Sustainable Industrial Processing Summit
SIPS2019 Volume 11: New and Advanced Materials, Technologies, and Manufacturing
| Editors: | F. Kongoli, F. Marquis, N. Chikhradze, T. Prikhna |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2019 |
| Pages: | 174 pages |
| ISBN: | 978-1-989820-10-0 |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
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Use of Cellulosic Fibres from Wood Pulp and Waste Paper for Sustainable Cement Based Mortars
Nadezda Stevulova1; Viola Hospodarova1; Vojtech Vaclavik2; Tomas Dvorsky2;1TECHNICAL UNIVERSITY OF KOSICE, Kosice, Slovakia; 2VSB-TECHNICAL UNIVERSITY IN OSTRAVA, 708 00 Ostrava-Poruba, Czech Republic;
Type of Paper: Regular
Id Paper: 81
Topic: 43
Abstract:
Innovative building solutions for conserving non-renewable resources are connected to the development of sustainable building materials based on the use of easily renewable natural raw material resources, as well as the recycling of biomass wastes coming from textile, agricultural and paper industry. There is a renewed tradition that has been developed in Europe in light of environmentally sustainable policies to utilize the natural lignocelluloses' materials (usually derived from plants) and recycled cellulosic fibres as organic fillers and/or reinforcement into lightweight composite materials for sustainable constructions [1]. These provide healthy living solutions, thanks to the natural fibres' ability to regulate humidity inside buildings by absorbing and/or releasing water molecules, depending on the air conditions [2].
In connection with our research program on the properties and characterizations of different cellulosic fibre types and their incorporation into the cementitious matrix [3-5], the objective of this paper was to evaluate the application potential of low quality cellulosic fibres originating from waste paper in comparison to the bleached wood pulp with high cellulose content in making cement-plastering mortars. The influence of the quality of such fibres and their addition (0.1-0.5 wt. % from the binder and filler weight) on resulting properties of fresh cement mortars (consistency of fresh mixture) and mortar specimens (density, thermal conductivity, and compressive and flexural strength) after curing (28, 90 and 180 days) was investigated. The results revealed that the flow values of fresh fibre cement mixtures as well as the thermal conductivity and mechanical properties (compressive and flexural strength) of hardened mortars are affected by the cellulosic fibres (content and quality). Despite the worse workability of fresh mixtures and significantly reduced values of compressive and flexural strength of hardened fibre-cement specimens, with the addition of both fibre kinds compared to reference cement mixture and mortar due to inhibition of the cement hydration process, increasing addition of cellulosic fibres in the mixture led to favourable values of thermal conductivity which are beneficial for cement mortars with insulating properties. The obtained compressive strengths of 28 days of cured fibre-cement mortars are in the accepted range for plastering mortars. The results of comparative testing of fibre-cement mortar properties confirmed the suitability of the use of recycled fibres in building materials.
Keywords:
Cellulosic fibers; Wood pulp; Waste paper; Cement based mortarsReferences:
[1] O. Onuaguluchi, N.Banthia, Cem. Concr. Compos. 68 (2016) 96-108.[2] S. Elfordy, F. Lucas, F. Tancret, Y. Scudeller, L. Goudet, Construct. Build. Mater. 22 (2008) 2116-2123.
[3] A. Sicakova, V. Hospodarova, N. Stevulova, V. Vaclavik, T. Dvorsky, Advanced Materials Letters 9 (2018) 606-609.
[4] N. Stevulova, V. Hospodarova, A. Estokova, GeoScience Engineering 62 (2016) 18-21.
[5] V. Hospodarova, N. Stevulova, J. Briancin, K. Kostelanska, Buildings 8 (2018) 1-12.