Influence of lignocellulosic aggregate coating with paraffin wax on flax shive and cement-shive composite properties

Ali Al-Mohamadawi (1, 2) , Karim Benhabib (1, 2) , Rose-Marie Dheilly (1, 2) , Adeline Goullieux (1, 2)

1 EPROAD - Eco-Procédés Optimisation et Aide à la Décision - UR UPJV 4669
2 SFR Condorcet

Due to their low cost, lightweight and thermal insulation properties, lignocellulosic by-products received a particular attention, in the recent years, for manufacturing lightweight concretes. However these by-products are not fully compatible with cement matrix leading to setting delay, significant dimensional variations, and low mechanical strengths. To avoid such drawbacks, a coating process of flax shives using paraffin wax is proposed in this study. This will lead to reduction in shive water absorption. Compared to composites elaborated with raw shives, the composite obtained in this work exhibited significant improvements in hydrous behavior and mechanical strengths with moderate increase in apparent bulk density and thermal conductivity. (C) 2015 Elsevier Ltd. All rights reserved.

Domaines: Informatique [cs]

Ali Al-Mohamadawi, Karim Benhabib, Rose-Marie Dheilly, Adeline Goullieux. Influence of lignocellulosic aggregate coating with paraffin wax on flax shive and cement-shive composite properties. Construction and Building Materials, 2016, 102 (1), pp.94-104. ⟨10.1016/j.conbuildmat.2015.10.190⟩. ⟨hal-03617953⟩