Architect at Inova arquitetura. Uploads. Favorites. cartilha-para- producao-de-tijolo-solocimento by bel85 9, views · producao-de-tijolo- solocimento. Produção: Gold & Gold S/S Núcleo de Consultoria Ambiental. Contratante: Cover of “Cartilha para a Produção de Tijolos de Solo-Cimento”. it was regulated by the Associação Brasileira de Cimento Grande F. M. ( ), Fabricação de tijolos modulares de solo cimento por prensagem manual com e Cartilha. São Paulo, Associação Brasileira de. Cimento Portland (ABCP).
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Synthetic incorporation of cincholoipon into ipecacuanha alkaloids.
Morphology catilha synthetic goethite particles. OH incorporation in nearly pure MgAl2O4 natural and synthetic spinels. Synthetic studies on diterpenes from a termite soldier: Phosphate incorporation into the subcellular particles of a bleached Euglena.
Elaboration and characterization of novel humidity sensor based on micro-carbonized bamboo particles. Saliva secretion rate and saliva composition in relation to extraversion.
The chemical composition, density and aspect ratio of the bamboo particles were determined. Introduction Non-conventional materials and technologies NOCMATs are considered in current construction practice due environmental and economic issues.
Advantages like energy savings, thermal and acoustic insulation, use of renewable materials and carbon sequestration are some reasons that attract interest in NOCMATs worldwide [1—4]. Several researches have been done concerning mechanical strength and physical properties of raw earth including ancient and new products aimed at improving properties and developing new composites [10—20].
Nowadays, adobes are considered to be non-conventional materials and have been employed in housing, rural constructions and modern ecological buildings.
Advantages compared with industrial materials include low cost, thermal and acoustic comfort, minimum water and energy consumption and waste reduction . Adobe properties depend on physical, chemical and mineralogical soil characteristics, water content, production procedures, drying, and type of stabilization .
Incorporation of bamboo particles and “synthetic termite saliva” in adobes
The suitable water content for adobe production is an important parameter that is poorly studied [23—25].
Furthermore, water absorption and low compressive strength of adobes, are important issues that require further investigation. Bamboo particles have been studied for production of composites , chipboards , oriented strand boards — OSB , glued laminated bamboo — GLB , bamboo-cement  and wavy tiles , however there is a lack of research about their use as reinforcement in adobes. The wide availability of bamboo plants, their rapid growth and lightness are favorable characteristics for use in construction.
Bambusa vulgaris vittata is common in Brazil and presents a high concentration of starch in its composition, attracting insects that reduce its durability for structural applications. When bamboo particles are incorporated in the soil matrix as adobe reinforcement, insects do not have access to the particles. This product is called in such a way because it works similar to the glue-like secretion produced by the termites for sculpture of their earth aboveground mounds.
The aim of using it is to break the electrochemical link formed by the action of negative charges on the surfaces of clay minerals. The neutralization of the electrostatic charge by permanently stable cations prevents adsorbed water formation and increases the spacing between the surfaces of the particles. Materials and experimental procedures 2. Soil and bamboo particles The soil was collected at approximately one meter deep at the BC horizon layer in the city of Lavras, Minas Gerais state, Brazil.
Field and laboratory tests were used to characterize the soil. Australian Standard AS In this case, the soil was mixed with sand, in order to decrease LL and increase PI. XRD pattern obtained from the soil sample of red latosol cambisol containing: Fld feldsparQtz quartzGtt goethiteGbs gibbsite and Cln kaolinite.
The culms were smashed in an agricultural machine crusher Pinheiro, TPand then ground in a hammer mill, with a sieve having a 2. The particle size measurement was performed in a stereoscopic microscope Meiji Techno RZ and using Image J software , with a representative sample of around particles. The bamboo density was determined by the water displacement method by direct measurement of volume in a graduated cylinder  using six specimens.
The chemical characterization of the bamboo particles was performed in three replicates using the following appropriate standards: The particles were composed of approximately 4. The bamboo particle length ranged from 0. The diameter ranged from 0. Aluminum sulfate, Al2 SO4was used as activator. Several mix-designs were tested, as shown in Table 1.
Longitudinal linear contraction was measured after seven days. Water absorption tests were done with half adobes, using six repetitions and procedures described in Varum et al. After 6 h, the samples were removed from the pan and weighed again.
Water absorption was calculated as a percentage considering the mass loss. The capillarity test was based on procedures of Varum et al. Adobes solo-cimehto each mixture were placed in a tray, and water was poured tikolo the tray, creating a contact area with the bottom surface of the adobe.
After 1 h, the height reached by the water in the adobes was measured on all sides in four replicates. The suitable amount of water estimated in these tests for each formulation is presented in Table 2 and must fall between PL and LL Table 2. Water content lower than PL is acceptable and relates to improvement in the rheology of the formulation.
Table 1 Mix-designs used for production of the adobes. The mixture was made by mechanical stirring, followed by casting manually into the wood molds.
Compressive strength Volume Soil Treatments Compressive tests were performed in a kN capacity hydraulic press at a load speed of 1. Adobes were cut in half with a circular saw and the parts were joined with mortar comprised of soil: The same mortar was used to provide a uniform top and bottom surface of the sample. The layers totaled 3 mm height. Six specimens were used for each formulation. Before testing an 8 mm thick steel plate was placed on the bottom and top of the specimens.
Results and discussion 3. Techniques for estimation of suitable water content: Sequence for adobe production: Effect of chemical stabilization and reinforcement on the physical properties of the adobes Fig. Average and standard deviation values of apparent density of the adobes. The reaction of the chemical stabilizer with clay absorbs the free water and increases the soil stability.
The presence of bamboo particles reduces the density. Fiber dimensional variation in the presence of water increased the porosity and decreased the density during the drying process. Average and standard deviation values of the linear shrinkage left and typical shrinkage behavior of samples and the frame used for shrinkage test right. Average and standard deviation values of water absorption after 6 h.
Images at right show the control — S bellowS-STS middle and S-STS-B6 upper treatments, showing the great water absorption and loss of mass and total disintegration for the control S specimen bellow. Average results of loss of mass after water absorption and capillarity tests for the adobes.
Average and standard deviation values of compressive strength for adobe. Effect of chemical stabilization and reinforcement on compressive strength Fig.
Average and standard deviation values of capillarity of the adobes. Compressive strength is the main property for quality control of adobes. The increasing trend seen in Fig. The mixtures with chemical stabilizer and higher content of bamboo particles S-STS-B6 showed the higher compressive strength. The fracture surface of the adobe fragments visualized by stereoscopic microscope shows good interaction between the bamboo particles and the stabilized soil Fig.
Lower content of pores was observed in the S-B6 Fig. Those results are higher than the compression strength limit of 0. Stereoscopic images of the fracture surface of the adobes: Additionally, the improved binding of the particles promoted by the synthetic termite saliva improved the packing of the soil particles, making the structure more cohesive and resistant to compressive loads.
Incorporation of bamboo particles and “synthetic termite saliva” in adobes – PDF Free Download
tijolp These results contribute to the better understanding of the stabilization mechanisms of adobes and widespread use of this kind of block for rural or urban housing. Alternative compositions of oriented strand boards OSB made with commercial woods produced in Brazil. Maderas Ciencia y Tecnol ; The ecology of building materials. Constr Build Mater ; J Biobased Mater Bioenergy ;4 2: Design and technology of a sustainable architecture.
Earth building in Spain. J Cultural Heritage ; An overview of research in earthen architecture conservation. The Getty Conservation Institute; The earth in the architecture of the historical centre of Lamezia Terme Italy: Appl Clay Sci, Amsterdam ; Experimental analysis and modelling of the mechanical behaviour of earthen bricks.
Performance of composite soil reinforced with barley straw. Cem Concr Compos ; Editora da UFLA; On earth stabilization with natural polymers for earth masonry construction. Source, production, morphology, properties and applications. Compos A Appl Sci Manuf ;38 7: