Estudo do comportamento mecânico de estruturas de solo-cimento reforçado com fibras de coco e hastes de bambu

In this work the use of coconut fiber (coir) and bamboo shafts as reinforcement of soil-cement was studied, in order to obtain an alternative material to make stakes for fences in rural properties. The main objective was to study the effect of the addition of reinforcement to the soil-cement matrix. The effect of humidity on the mechanical properties was also analyzed. The soil-cement mortar was composed by a mixture, in equal parts, of soil and river sand, 14% in weight of cement and 10 % in weight of water. As reinforcement, different combinations of (a) coconut fiber with 15 mm mean length (0,3 %, 0,6 % and 1,2 % in weight) and (b) bamboo shafts, also in crescent quantities (2, 4 and 8 shafts per specimen) were used. For each combination 6 specimens were made and these were submitted to three point flexural test after 28 days of cure. In order to evaluate the effect of humidity, 1 specimen from each of the coconut fiber reinforced combination was immersed in water 24 hours prior to flexural test. The results of the tests carried out indicated that the addition of the reinforcement affected negatively the mechanical resistance and, on the other hand, increased the tenacity and the ductility of the material.

Projeto de Produção e Processo de Pré-fabricação de Componentes de Bambu

The design and production process of the workshop shed made of bamboo presented in this paper is the result of almost two years of cooperation between Viverde Farmers Association, Universidade Estadual Paulista and Unisol. The system consists of rounded aroeira pillars, a roof structure formed by in natura bamboo frames and metal connections. The development of the parts and connections detailing, through the technical drawing of each component, enabled the development of standardized precision fittings aiming at optimizing the execution and saving time, energy and raw material on the assembly line. In this process, the creation and improvement of templates was necessary in order to facilitate the assembly of parts. The component assembly phases were recorded at the Experimental Laboratory for Bamboo and Wood Processing - UNESP/FEB. The results showed the good performance of the pre-fabrication process of bamboo components.

Design para sustentabilidade: modelo de cadeia produtiva do bambu laminado colado (BLC) e seus produtos

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

O bambu na arquitetura: desing de conexões estruturais

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

O uso de bambu e metal clay no design de jóias de arte

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Painéis de bambu, uso e aplicações: uma experiência didática nos cursos de design em Bauru, São Paulo

Pós-graduação em Design - FAAC

Utilização de forro de bambu e seus efeitos sobre os índices de conforto térmico e parâmetros zootécnicos de frangos de corte criados em diferentes densidades populacionais

Pós-graduação em Agronomia (Energia na Agricultura) - FCA

Ensaios para viabilizar a laminação do bambu dendrocalamus giganteus em operações de torneamento sem centros

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Resistência mecânica do material compósito: madeira de eucalipto-lâmina de bambu

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Projeto bambu: introdução de espécies, manejo, caracterização e aplicações

Este trabalho faz parte das exigências relativas a obtenção do título de livre docente na Universidade Estadual Paulista-Unesp. O projeto foi iniciado em 1994 com a introdução de espécies de bambu no campus local da Unesp visando o fornecimento de matéria-prima/colmos conhecida para estudos. Num processo contínuo, o projeto vem se desenvolvendo tecnicamente através de várias atividades ligadas a cadeia produtiva desta planta, envolvendo o acompanhamento do desenvolvimento das espécies, seu manejo, colheita, produção de mudas, tratamento, processamento, caracterização e aplicações. Estabelecido na Faculdade de Engenharia, o projeto naturalmente se aproximou das áreas de design e arquitetura, sendo estabelecida numa relação com estes cursos nos níveis de graduação e pós-graduação, com a participação e formação de alunos. Com aspecto multidisciplinar o projeto também procurou atuar na extensão universitária e na inserção social procurando transferir os conhecimentos adquiridos para a sociedade. Justifico a extensão do trabalho e o grande número de tabelas (deslocadas para os Anexos) e figuras mostrados pois na verdade o projeto procura mostrar a atuação em várias atividades: plantio de espécies, produção, manejo e acompanhamento do desenvolvimento, caracterização, processamento e desenvolvimento de produtos e aplicações, relação com alunos de graduação, pós-graduação e atividades de extensão. Relativamente ao trabalho de campo, foram introduzidas diversas espécies de bambu, sendo mostrados os dados de desenvolvimento, manejo e produção para duas delas, as espécies Dendrocalamus giganteus e Guadua angustifólia, ambas prioritárias, de fácil cultivo e produção de mudas e largamente utilizadas. Relativamente ao trabalho de laboratório, os colmos foram processados...

Metodologia de curvatura de bambu laminado colado (BLAC) para fabricação de mobiliário: diretrizes para o design

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Caracterização química, física e anatômica do bambu Guadua tagoara para polpação Kraft

Pós-graduação em Engenharia Mecânica - FEG

Coptotermes gestroi (Isoptera, Rhinotermitidae): revisão da distribuição geográfica, danos e análise de sobrevivência após exposição a bambu termorretificado

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Estudo comparativo de dois tipos de painéis de MDP: com adição de papel impregnado e lâminas de bambu

This work is the production of two types of particle boards reconstructed MDP (Medium Density Particleboard), the first with the addition, in the inner layer of particles of impregnated paper, the ratios of 0%, 1%, 5% and 20 %. In the second type of panel MDP was inserted with blades of bamboo species Dendrocalumus giganteus as coatings and structural reinforcement. The MDP panel, used as a basis for both cases has the composition of three layers, two external particles with smaller particle size and an inner layer composed of particles of larger particle sizes. Assays were performed based on physical and mechanical NBR 14.810/2006 for the determination of the board density, thickness swelling, water absorption, moisture content, bending, tension parallel and perpendicular, and testing of particle sizes of the particles did not exists in standard references. The results were analyzed and compared the results of the commercial boards made from 100% eucalyptus, based on the limits specified by the ABNT NBR 14.810/2006. The values of the tests showed similar results indicating normative specifications in a positive way, the possibility of production of MDP with the use of waste paper impregnated. As for the panel with bamboo blades, the tests showed a mechanical performance far superior to MDP market, explaining the study and possible implementation of the bamboo for use where the MDP will suffer greater mechanical stress, such as doors, tops and benches tables

Análise da estabilidade dimensional e resistência mecânica em bambu Guadua angustifolia pós-processos de tratamentos químicos e térmico

Nowadays, bamboo is being studied because of their strength properties according with their specific mass and speed of growth, which makes it an important alternative as a new resource that will help reduce pressure on forests and helpping them favoring the minimization of uncontrolled deforestation in many regions of Brazil. This study aimed, in general, to analyze physical and mechanical properties of the material with the divulgation of its potential for industrial application. To do so, in this research were determined in relation to the physical properties, moisture content, dimensional stability and the apparent densities and the mechanics and basic, just a tension parallel to grain, in order to observe the interference of various kinds of treatments (chemical, thermal and natural) on the strength and modulus of elasticity in this request. The species used was the Guadua angustifolia, a species native of Brazil. All tests were performed at Universidade Estadual Paulista - Campus Experimental Itapeva in the laboratory of Materials Properties. The methodology used for testing of moisture, density and tension parallel to grain were based on NBR 7190/1997 for the wood, and dimensional stability tests were based on much the same as in COPANT 462/1972 (South American) . The preservative treatments conducted followed the recommendation of each manufacturer. The values obtained in tests of physical properties were satisfactory especially with respect to density and dimensional stability analyzed by the coefficient of anisotropy, showed that, compared to wood, excellent quality for the shrinkage test, obtaining a coefficient of 1.2. With respect to parallel tensile tests to fibre results showed, in most cases, that test specimens with the presence of us have lower values of resistance and modulus of elasticity when compared with those without us. In the treatment of thermal-treatment there was an apparent treatment there was an apparent increase in...