scholarly journals Técnica de alvenaria adobe: Reprodução do método construtivo com e sem o uso de fibra vegetal

UNICIÊNCIAS ◽  
2021 ◽  
Vol 25 (1) ◽  
pp. 10-13
Author(s):  
Mariana Aparecida Giraldelli ◽  
Osvaldo Alves Pereira ◽  
Samuel Felipe Dos Santos ◽  
Mirela Aguiar Brasil ◽  
Stefani Karoline Teodoro Pinheiro
Keyword(s):  
Mechanical Strength ◽  
Construction Method ◽  
Narrative Review ◽  
Raw Material ◽  
Simple Construction ◽  
Earth Construction ◽  
History Of ◽  
History Of Engineering ◽  
Raw Earth ◽  
Vegetable Fiber

A técnica construtiva do adobe é um método de alvenaria em que se utilizam blocos em terra crua que possui como principal matéria prima o solo. De maneira geral, esta técnica proporcionou grandes feitos na historia da humanidade e reproduz com legitimidade um método construtivo simples, de fácil acesso e sustentável. Esta técnica bioconstrutiva é uma proposta de investimento para vários estudos, pois é um método que acompanhou a história da engenharia e da arquitetura e é possível ser aperfeiçoado podendo ser feita de várias formas possíveis com diversos agregados. Este trabalho apresenta a técnica do adobe que é uma alternativa sustentável para construções artesanais, assim como a experiência com a técnica e a mudança de comportamento para a confecção dos blocos com diferentes proporções de fibra vegetal em sua constituição, sendo que esta adição é normalmente feita para auxiliar na capacidade de resistência mecânica do bloco. Este trabalho consiste na mescla de uma revisão narrativa e a reprodução da confecção da técnica, sendo a primeira baseada em livros, artigos, seminários e demais obras cientifica que abordam o tema de construções em terra crua com destaque na técnica adobe, abordando os principais pontos para a confecção dos blocos e comparando os modos de confecção.   Palavras-chaves: construção em terra crua; adobe; bloco de terra crua.   Abstract The constructive technique of adobe is a masonry method in which blocks are used on raw earth whose main raw material is soil. In general, this technique provided great achievements in the history of humanity and legitimately reproduces a simple construction method, easily accessible and sustainable. This bioconstructive technique is an investment proposal for several studies, as it is a method that has followed the history of engineering and architecture and it is possible to be perfected and it can be done in several possible ways with different aggregates. This work presents the adobe technique, which is a sustainable alternative for artisanal constructions, as well as the experience with the technique and the change in behavior for the making of blocks with different proportions of vegetable fiber in their constitution, and this addition is usually made to assist in the mechanical strength of the block.This work consists of a mixture of a narrative review with empirical preparation, the first being based on books, articles, seminars and other scientific works that address the theme of constructions on raw earth with emphasis on the adobe technique, addressing the main points for the making of the blocks and drawing a comparison about this production.   Keywords: raw earth construction; adobe; block of raw earth.

scholarly journals Construção com Terra: Breve Histórico e Técnicas

2020 ◽  
Vol 24 (4) ◽  
pp. 357-364
Author(s):  
Mariana Aparecida Giraldelli ◽  
Fabricia Cristina Lemos Melo ◽  
Osvaldo Alves Pereira ◽  
Maria Aparecida Domingues ◽  
Stefani Karoline Teodoro Pinheiro ◽  
...  
Keyword(s):  
Colonial Period ◽  
Raw Material ◽  
Rammed Earth ◽  
Human Beings ◽  
Construction Techniques ◽  
History Of ◽  
Ancient Civilizations ◽  
Almost All ◽  
The 19Th Century ◽  
Raw Earth

A utilização do solo como matéria prima para técnicas construtivas surgiu junto com a necessidade de os seres humanos se fixarem em locais, construindo as primeiras habitações e sociedades. As primeiras construções em terra crua são datas com mais de 7.000 anos A.C., sendo observado que a utilização desta matéria prima ocorreu em quase todos os continentes devido à diversidade quantidade do material e ao clima. No Brasil, as técnicas construtivas com terra crua foram amplamente utilizadas no período colonial com forte influência dos portugueses que introduziram as técnicas de adobe, taipa de mão e taipa de pilão. Tais técnicas construtivas se mantiveram presentes, mas este modo de construir vem perdendo espaço no final do século VIII e até meados do século XIX e se vê cada vez mais marginalizado. Conhecer estas técnicas construtivas que remontam as civilizações antigas, a sua história e seus métodos e necessário para apreender e entender parte da cultura e das tradições humana. Esta revisão narrativa, baseada em livros, artigos e seminários, faz um levantamento sobre a história da matéria prima solo na construção civil, apresentando cronologicamente as técnicas e métodos construtivos que foram utilizadas em diferentes regiões, com foco nas construções em terra crua conhecidos e usuais no Brasil.   Palavras-chave: Construções em Terra. Arquitetura de Terra. Bioconstrução.   Abstract The use of soil as raw material for construction techniques arose along with the need for human beings to settle in places, building the first houses and societies. The first constructions on raw earth are dates more than 7,000 years B.C., being observed that the use of this raw material occurred in almost all the continents due to the diversity of the material and the climate. In Brazil, the construction techniques with raw earth were widely used in the colonial period with a strong influence of the Portuguese who introduced the techniques of adobe, rammed earth and rammed earth. Such construction techniques remained present, but this way of building has been losing ground in the late 8th century and until the middle of the 19th century and is increasingly marginalized. Knowing these constructive techniques that go back to ancient civilizations, their history and their methods is necessary to learn and understand part of human culture and traditions. This narrative review, based on books, articles and seminars, surveys the history of soil raw material in civil construction, chronologically presenting the construction techniques and methods that were used in different regions, focusing on the known and usual raw earth constructions in Brazil.   Keywords: Earth Constructions. Earth Architecture. Bioconstruction.

Life as a Raw Material: Illusions of Control

Somatechnics ◽  
2012 ◽  
Vol 2 (2) ◽  
pp. 250-262 ◽  
Author(s):  
Oron Catts ◽  
Ionat Zurr
Keyword(s):  
Synthetic Biology ◽  
Cognitive Engineering ◽  
Raw Material ◽  
Future Scenarios ◽  
Short History ◽  
Know How ◽  
Political Forces ◽  
History Of ◽  
The Way

The paper discusses and critiques the concept of the single engineering paradigm. This concepts allude to a future in which the control of matter and life, and life as matter, will be achieved by applying engineering principles; through nanotechnology, synthetic biology and, as some suggest, geo-engineering, cognitive engineering and neuro-engineering. We outline some issues in the short history of the field labelled as Synthetic Biology. Furthermore; we examine the way engineers, scientists, designers and artists are positioned and articulating the use of the tools of Synthetic Biology to expose some of the philosophical, ethical and political forces and considerations of today as well as some future scenarios. We suggest that one way to enable the possibilities of alternative frames of thought is to open up the know-how and the access to these technologies to other disciplines, including artistic.

scholarly journals Design Optimisation Strategies for Solid Rammed Earth Walls in Mediterranean Climates

Energies ◽  
2021 ◽  
Vol 14 (2) ◽  
pp. 325
Author(s):  
Giada Giuffrida ◽  
Maurizio Detommaso ◽  
Francesco Nocera ◽  
Rosa Caponetto
Keyword(s):  
Energy Demand ◽  
Construction Material ◽  
Base Material ◽  
Energy Performance ◽  
Embodied Energy ◽  
Rammed Earth ◽  
Earth Construction ◽  
Material Choice ◽  
Earth Walls ◽  
Raw Earth

The renewed attention paid to raw earth construction in recent decades is linked to its undoubted sustainability, cost-effectiveness, and low embodied energy. In Italy, the use of raw earth as a construction material is limited by the lack of a technical reference standard and is penalised by the current energy legislation for its massive behaviour. Research experiences, especially transoceanic, on highly performative contemporary buildings made with natural materials show that raw earth can be used, together with different types of reinforcements, to create safe, earthquake-resistant, and thermally efficient buildings. On the basis of experimental data of an innovative fibre-reinforced rammed earth material, energy analyses are developed on a rammed earth building designed for a Mediterranean climate. The paper focuses on the influences that different design solutions, inspired by traditional bioclimatic strategies, and various optimised wall constructions have in the improvement of the energy performance of the abovementioned building. These considerations are furthermore compared with different design criteria aiming at minimising embodied carbon in base material choice, costs, and discomfort hours. Results have shown the effectiveness of using the combination of massive rammed earth walls, night cross ventilation, and overhangs for the reduction of energy demand for space cooling and the improvement of wellbeing. Finally, the parametric analysis of thermal insulation has highlighted the economic, environmental, and thermophysical optimal solutions for the rammed earth envelope.

scholarly journals The Shoulder Instability: An Overview

2021 ◽  
Author(s):  
Balaji Zacharia ◽  
Arun Prakas ◽  
Subramanian Vaidyanathan ◽  
Antony Roy ◽  
Mohammed Komalam Ayyub
Keyword(s):  
Natural History ◽  
Shoulder Instability ◽  
Shoulder Joint ◽  
Shoulder Dislocation ◽  
Narrative Review ◽  
Pathological Anatomy ◽  
Dynamic Factors ◽  
History Of ◽  
Classification And Treatment

AbstractInstability of the shoulder joint is common but most of the time it is unrecognized by the treating surgeon. The symptoms can vary from subtle pain to shoulder dislocation. In many cases, there is no history of trauma. The shoulder joint is stabilized by both static and dynamic factors, and treatment is complex, with recurrence more common in young athletic individuals. Open and arthroscopic techniques of stabilization are available with specific indications for each of these methods. In this narrative review of shoulder instability, we describe the pathological anatomy, evaluation, natural history, classification, and treatment of shoulder instability.

Dependency in Africa: Stages of African Political Economy

1983 ◽  
Vol 9 (2) ◽  
pp. 229-247 ◽  
Author(s):  
Amechi Okolo
Keyword(s):  
Political Economy ◽  
International System ◽  
Raw Material ◽  
The West ◽  
Cheap Labour ◽  
History Of ◽  
The Common ◽  
First Contact ◽  
The Impact ◽  
The Relationship

This paper traces the history of the relationship between Africa and the West since their first contact brought about by the outward thrust of the West, under the impetus of rising capitalism, in search of cheap labour and cheap raw material for its industries and expanding markets for its industrial products, both of which could be better ensured through domination and exploitation. The paper identifies five successive stages that African political economy has passed through under the impact of this relationship, each phase qualitatively different from the other but all having the common characteristic of domination-dependence syndrome, and each phase having been dictated by the dynamics of capitalism in different eras and by the dominant forces in the changing international system. Its finding is that the way to the latest stage, the dependency phase, was paved by the progressive proletarianization of the African peoples and the maintenance of an international peonage system. It ends by indicating the direction in which Africa can make a beginning to break out of dependency and achieve liberation.

Comparative Study on Mechanical Strength Properties of Concrete by Using Demolished Concrete Waste

2019 ◽  
Vol 1 (6) ◽  
pp. 235-239
Author(s):  
Sabarinathan K ◽  
Ashwathi R
Keyword(s):  
Comparative Study ◽  
Mechanical Strength ◽  
Coarse Aggregate ◽  
Environmental Awareness ◽  
Strength Properties ◽  
Raw Material ◽  
Construction Waste ◽  
The World ◽  
Day By Day

The growing environmental awareness and Construction waste, is increasing day by day which in turn makes the world in seeking for examining the characteristics of Construction waste and obtaining a solution by using its reliable segments such that it can be used as a raw material and Conservation the natural recourses like Coarse aggregate

Serpentinite Magnesium Binders, Based on Technogenic Raw Materials

2021 ◽  
Vol 316 ◽  
pp. 1050-1054
Author(s):  
V.N. Zyryanova ◽  
E.V. Lytkina ◽  
A.P. Ochur-Ool
Keyword(s):  
Mechanical Strength ◽  
Water Resistance ◽  
Raw Materials ◽  
Raw Material ◽  
Material Base ◽  
Hardening Process ◽  
Dispersed System ◽  
Technogenic Raw Materials

Increasing water resistance and mechanical strength of hardening magnesian binders’ products can be achieved by introducing microfillings into a hardening dispersed system. It is shown that serpentine provides an increase strength and water resistance in hydration and hardening process, being as a structure-forming component, it intensifies this process. It allows expanding the raw material base for the production of magnesia binders for construction purposes.

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