Uso do papel kraft como fibra em peças de concreto para pavimentação

Abstract

Energy consumption in the production of building materials is one of the most degrading agents of the environment in the industrial sphere, and Portland cement concrete is the most used industrialized product in the world and also its main component. In search for diminishing this problem, an improvement of the concrete dosage used in preparation of the precast pieces for paving was sought, by adding cellulose fibers from Kraft paper (cement packaging). Pieces with different fiber percentages in relation to the mass of cement used were produced, and a resistance gain was observed in the samples with 1.25% and 2.5% of fibers in relation to the total mass of cement. The fibers were acquired through a simple grinding process of cement paper bag after being moistened with water. From this was concluded that, through simple processes, is possible to reduce improper disposal of a waste that is almost always useless to recycling cooperatives, such as the paper of cement packaging, and also to reduce the use and to decrease the production of the main component of concrete, cement. In general, a reduction of the total volume of concrete produced is possible because it becomes a much more efficient material by using fibers that are more accessible and easier to produce than polypropylene and steel fibers.