USE OF WOOD RESIDUES OF Pinus spp. FOR SUBSTITUTION TO THE FINE AGGREGATE IN THE PRODUCTION OF CONCRETE BLOCKS FOR STRUCTURAL MASONRY

• Main Authors: Adauto José Miranda de Lima, Setsuo Iwakiri
• Format: Article
• Language: Portuguese
• Published: Universidade Federal de Santa Maria 2014-03-01
• Series: Ciência Florestal
• Subjects: resíduo de <i>Pinus </i>spp.; blocos de concreto; alvenaria estrutural
• Online Access: http://cascavel.ufsm.br/revistas/ojs-2.2.2/index.php/cienciaflorestal/article/view/13339
• ISSN: 0103-9954; 1980-5098

<p><a href="http://dx.doi.org/10.5902/1980509810538">http://dx.doi.org/10.5902/1980509813339</a></p>This research was developed with the objective of evaluating the potential use of residues of the productionof Pinus spp. sawnwood, as substitution to the fine aggregate of the concrete used for the production ofblocks for structural masonry. The evaluation of the physical characteristics (density, porosity and waterabsorption) and mechanics (compression and tension strength) of the concrete was evaluated in agreementwith the ABNT normalization. Substitutions of the fine aggregate were tested by percentages of 0, 20,40, 60, 80 and 100% of residue of Pinus spp. in natura, Pinus spp. in natura and with addition of 4,5%CaCl2.2H2O and residue of Pinus spp. pre-treated with extraction in cold water for 48 hours (AF-48H).The compositions were initially used for the production, in laboratory, of cylindrical specimens of 50 mmdiameter, by the use of a molding system for vibrate-compression and later, for producing blocks, withoptimized compositions, in vibrate-press commercial machine. Satisfactory results were obtained withsubstitutions of up to 50% of the mineral fine aggregate for the residue of Pinus spp.