Effect of the Addition of Woodwork Activity Waste and Aggregate Crushing Waste on the Thermo-Mechanical Properties of Sand Concretes

摘要

The great quantities of wastes resulting permanently from various industrial activities constitute an environmental embarrassment and raise problems particularly difficult to solve. However the re-use of these wastes in the construction industry can solve a double problem: on one hand environmental problems and on the other hand economic and technical problems encountered in the field of construction. In fact, certain wastes have very important qualities and their introduction into certain building materials can improve considerably some of their mechanical, thermal or acoustic properties etc. This work enters in this context: it consists on formulating a new concrete which would use abundant and renewable resources, slightly or not at all exploited and would present either comparable characteristics with those of the usual concretes or better. This work thus consists in introducing two wastes of different nature into a sand concrete in order to improve its thermo-mechanical characteristics. Wastes taken into account in this study are: limestone fillers derived from waste of aggregate crushing and wood shavings obtained from waste of woodwork activities. The results show that the addition of the latter respectively improves compressive strength and thermal conductivity of the material. The structure remains homogeneous and adherence between the different elements is good.