Tijolos de solo cimento reforçado com serragem de madeira

• Ano de defesa: 2005
• Autor(a) principal: Sandra Regina da Silva
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Minas Gerais; UFMG
• Palavras-chave em Português: Serragem; Resíduos de madeira; Solo-cimento; Ensaios não-destrutivos; Engenharia de estruturas
• Link de acesso: http://hdl.handle.net/1843/BUDB-8C5PAL

This work presents the study of bricks made from a soil, cement and wooden residues mixture. Its objective is to determine its strength taking into account the characteristics of the soil and the residues dosage. Two soil types that originated from UFMG campus, CPIII E-32-RS cement and Eucalyptus grandis and Eucalyptus cloeziana sawdust were used as components of the bricks studied. To establish strength limits, the natural soil was corrected in way that it was possible to obtain a sandier and clayed one. To determine the optimum mixture, it was necessary to study the inclusion of different residues grades (0%; 0,5%; 1%; 2%; e 3%) at both soils. Specimens were tested using simple compression tests and diametrical compression tests. Prisms and bricks were tested using simple compression tests. The pressure used to cast the bricks wasdetermined through the load cell e manometer monitoring. Relationships between specimens, bricks e prisms shaping were established and equations were written. Non destructive tests were made as well and from those it was possible to determine the propagation time of the longitudinal wave in each sample. Through the average propagation ultrasonic wave speed, density and residue grade used, equations thatdetermine the compressive strength were found. It was also found a relationship between the mixtures Youngs module and its compression strength. By the definition of the optimum mixture and the analyses of the rupture tested bricks, three bricks were instrumented with rosettes. Using stress experimental analyses, it was determined the rupture way, the Poissons coefficient of the brick and a value to a possible use limit.The inclusion of 0,5% residues in a sandier soil was the best dosage to increase the bricks strength and compositions ductility, reducing its Youngs module. The experimental results proved the efficiency and high potential usefulness of the soil, cement and wooden residues bricks making them a promising competitor when compared with the conventional ones.