Orientador: Marcos Tadeu Tibúrcio Gonçalves / Banca: Manoel Cleber de Sampaio Alves / Banca: Marcos Valério Ribeiro / Banca: Eduardo Mauro do Nascimento / Banca: Ivaldo de Domenico Valarelli / Resumo: Dentre as diversas aplicações industrializadas do bambu é atrativa a confecção de lâminas delgadas, obtidas por laminação longitudinal, corte por serra e torneamento. O domínio tecnológico dos processos envolvidos nas operações primárias de transformação desta matéria prima, influenciam na qualidade e viabilidade destes produtos laminados. Neste trabalho foi estudada a laminação por torneamento da espécie Dendrocalamus giganteus. Inicialmente, este bambu foi laminado em um torno industrial sem centros e os resultados comparados àqueles apresentados na literatura para a obtenção de laminados de bambu por outros meios. Na seqüência, utilizando um torno mecânico, foi realizada a laminação em um torno com garras e fuso. Para então, avaliar a variação do torque durante o processo e a qualidade das lâminas, obtidas a partir de uma determinada geometria simplificada da ferramenta e rotação de acionamento. A experiência adquirida permitiu desenvolver e avaliar variações originais no processo de laminação por torneamento capaz de operar com e sem centros. A análise dos experimentos mostra a viabilidade do processo de laminação por torneamento, para a obtenção rápida, eficaz e fácil de lâminas contínuas com pequena espessura e grande largura, inviáveis de serem obtidas por outros meios. Colabora-se desta forma, para o desenvolvimento de processos industriais eficientes na transformação dos colmos de bambu, mais aptos a explorar o real potencial técnico e econômico desta importante matéria prima. / Abstract: Among several industrial applications, bamboo veneering is very desirable, either by longitudinal lamination (splliter), by saw cut or lathe veneering. The technology used to primarily process this grass species (or raw material or Bamboo) has great influence in the quality and the viability of the product. In this work Dendrocalamus giganteus species was used to study lathe veneering. Initially it was laminated in an industrial Center less veneering lathe and the results were compared to what was presented in literature for obtaining bamboo veneer by other means. The second step was simulated a traditional veneering in a mechanical lathe, with a simplified tool configuration. The experience allowed a development and evaluation of a process that is simple, original and capable of centered or center less operation. Analyzing the experiments it was noted the viability of this process to obtain a fast and easy continuous lamination with dimensions (thin and very large) that would be unattainable by other processes. This is a great step for an efficient industrial development to exploit the real technical economical potential of this wonderful raw material. / Doutor

The objective of this dissertation is to determine whether bamboo culms or stems are suitable for use as a construction material for permanent structures, from an engineering as well as a sustainability perspective. A secondary objective is to establish whether this would be a suitable building technology for South Africa. The research is desk-top in nature and involves reviewing articles in online journals and publications and collating the information into a coherent form. Eleven species of bamboo commonly used in construction worldwide are selected for investigation of their material and engineering properties. Based on the variations found in the various species of bamboo, approaches to engineering modelling and design of bamboo structures are detailed and discussed. Furthermore, four case studies are presented that illustrate the various areas where bamboo construction is currently used. Finally, research is done regarding the level of the South African bamboo industry, including whether a bamboo species currently exists in South Africa that would be suitable for construction purposes. The preliminary literature review indicated that there is a lack of scientific or structural information regarding bamboo as a building material from an engineering or materials perspective, both globally as well as in South Africa. Although a substantial amount of information was subsequently found on the various aspects of bamboo as a structural material, the information varies widely between sources, which is ascribed to variations in test methods as well as to the location of the species being tested. The design codes and standards from various countries for bamboo design and construction are briefly reviewed. For countries where there is currently no bamboo design code or standard, such as South Africa, it is recommended that the International Standard, ISO 22156, be used as a design basis, using specific material properties relevant to the local species. Many publications state that bamboo is a sustainable building material, comparing favourably with other building materials. However, quantitative proof was found to be either lacking or unclear. Different methods were used in the publications to evaluate bamboo from an environmental perspective, making it difficult to compare and evaluate the different reports and results. However, despite the different methods, it appears that bamboo can be regarded as an environmentally favourable material, provided that local species are used in construction. The four case studies presented demonstrate that bamboo culms are suitable for use in large structures, such as bridges or trusses, as well as for smaller structures such as buildings or houses. They also illustrate the issues that can occur if the design intent is not understood or correctly carried out during construction. South Africa has one bamboo species considered suitable for construction, namely Bambusa balcooa, which is grown in various parts of the country. The properties of the South African plants have not been established as yet. However, theoretical engineering and material properties as determined elsewhere in the world indicate that this is a viable construction material. Further areas of research are the establishment of the material and engineering properties of the local South African bamboo species Bambusa balcooa, as well as further research into the behaviour of bamboo in fire conditions.

Arundinaria gigantea, a North American bamboo that historically grew in vast canebrakes, is now considered a critical component of an endangered ecosystem. Expressing self-incompatibility, restoration efforts must ensure genetic diversity within canebrakes for viable seed production. DNA fingerprinting methods were developed using 20 simple sequence repeat (SSR) markers and two sequence-characterized amplified region (SCAR) markers. Among 18 markers able to amplify rivercane DNA via polymerase chain reaction (PCR), 10 were demonstrated to be polymorphic within rivercane. Markers could distinguish rivercane among and between canebrakes and could discern full-sibling seedlings. The mostly-infertile Mississippi canebrakes of rivercane were determined to contain 46% genetic diversity within canebrakes and an average of 1.436 effective alleles. In contrast, the fertile North Carolina canebrakes contained 99% genetic diversity within canebrakes and an average of 6.435 effective alleles. Therefore, theoretically, at least seven distinct genotypes were needed for a healthy, viable rivercane brake.

A place is more than a geograhic location. It is the sum of the immeasurable and sensible idiosyncracies that serve to identify as specifically as coordinate points can. Places are filled with traces of what once was and as such, they are imbued with the possibility of pointing to what could be. This thesis considers the potential of place in inspiring Architecture. / Master of Architecture

The purpose of this report was to investigate bamboo (Bambusa vulgaris) and to gain a wider knowledge about bamboo as a construction material. A growing problem all over the world is global warming caused by carbon dioxide emissions. Bamboo is a giant grass and can absorb more carbon dioxide in comparison to same-sized trees. The majority of bamboo species growing in Ghana is Bambusa vulgaris. The results are based on six qualitative semi-structured interviews conducted in Ghana and five supplementary interviews by e-mail conversations. The investigation was carried out in Greater Accra region, Ashanti region, and Western region in Ghana. The results of this survey showed that Bambusa vulgaris has the best properties for construction at four years of age and needs treatment to last longer than two years. The interviews also revealed that there is currently no example of a built corrugated bamboo roof in the country, instead traditional bamboo roofs are common in the rural areas. Natural material needs to increase in the urban areas for environmental purposes because cement and metal are standard material in the Greater Accra region. Therefore, roofing with bamboo can be a good idea. If bamboo becomes the main building material, it is possible that bamboo plantation will expand in Ghana and that contributing to overall reduced the CO2 emissions. The conclusion is to build with four year old bamboos and use bamboo instead of wood or traditional bamboo roofs as alternatives to corrugated bamboo roofing sheets in the country.

No description available.

This research mainly focuses on the electromagnetic shielding effectiveness of bamboo -charcoal, using cement mortar with bamboo-charcoal ingredient replacing parts of thin aggregates weight, and then finds the feasibility of electromagnetic shielding effectiveness by using bamboo-charcoal applied to cement mortar. Experiment contains two parts, one is to use different proportions of bamboo-charcoal with replacing with thin aggregates weights( 0%¡B3%¡B5% and 7% ),and the other is to use three kinds of thickness(3mm¡B4mm and 5mm), to measure the effectiveness of electrom- agnetic shielding, and to probe into whether cement mortar with bamboo-charcoal ingredient can shield electromagnetic or not. After researching on cement mortar with bamboo-charcoal, it can be used in civil engineering and ocean engineering, and this experiment will act on the premise which is not affecting the property of cement mortar with bamboo-charcoal, continuing using the condition of reference(Yu,2007) to probe into the electromagnetic shielding effectiveness of cement mortar with bamboo-charcoal, expecting this material can be used to domestic architecture, for protecting the health of our home environment.

Thesis (Eng.D.)--City University of Hong Kong, 2009. / "Submitted to Department of Building and Construction for the degree of Engineering Doctorate." Includes bibliographical references (leaves 185-191)

Thesis (M.S.)--California Polytechnic State University, 2009. / Mode of access: Internet. Title from PDF title page; viewed on April 21, 2009. Major professor: Arthur J. Chapman, M.S. "Presented to the faculty of California Polytechnic State University, San Luis Obispo." "In partial fulfillment of the requirements for the degree [of] Master of Science in Architecture." "April 2009." Includes bibliographical references (p. 69-70). Also available on microfiche.

Thesis (M. Phil.)--Hong Kong University of Science and Technology, 2002. / Includes bibliographical references (leaves 105). Also available in electronic version. Access restricted to campus users.