cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.20026714
title: Bibliometric analysis of the Brazilian scientific production on Building and Construction Technologies in the Web of Science database

description: Abstract This study consists in the analysis of the Brazilian scientific production on Building and Construction Technologies through bibliometric indicators. This field of study was chosen because of its relevance to the country's economic development. Bibliometry is a quantitative analysis method for scientific research. The data elaborated through bibliometric studies measures the contribution of scientific knowledge obtained from publications in specific areas. Production indicators are useful for the planning and execution of public policies and to improve the knowledge of the scientific community about the system that it is a part of. The aim of this study is to assess the Brazilian scientific production in Building and Construction Technology through the analysis of scientific papers published in journals and in proceedings of conferences indexed in the Web of Science (WoS) database. The data were collected using as selection criteria the category "Construction & Building Technology", and data from 910 articles by Brazilian authors in the period 1982 to 2014 were analysed. The interpretation of the data confirms that there has been a significant growth in Brazilian scientific production and a large contribution of the Southeast region of Brazil to this development.
DOI: 10.6084/m9.figshare.20026714.v1
title: Bibliometric analysis of the Brazilian scientific production on Building and Construction Technologies in the Web of Science database

description: Abstract This study consists in the analysis of the Brazilian scientific production on Building and Construction Technologies through bibliometric indicators. This field of study was chosen because of its relevance to the country's economic development. Bibliometry is a quantitative analysis method for scientific research. The data elaborated through bibliometric studies measures the contribution of scientific knowledge obtained from publications in specific areas. Production indicators are useful for the planning and execution of public policies and to improve the knowledge of the scientific community about the system that it is a part of. The aim of this study is to assess the Brazilian scientific production in Building and Construction Technology through the analysis of scientific papers published in journals and in proceedings of conferences indexed in the Web of Science (WoS) database. The data were collected using as selection criteria the category "Construction & Building Technology", and data from 910 articles by Brazilian authors in the period 1982 to 2014 were analysed. The interpretation of the data confirms that there has been a significant growth in Brazilian scientific production and a large contribution of the Southeast region of Brazil to this development.
DOI: 10.6084/m9.figshare.20026715.v1
title: Tensile strength of finger joints made of Manilkara huberi wood for use in glued laminated timber

description: Abstract The use of glued laminated timber structural elements requires an experimental study of combinations of wood species and the adhesives used. This aim of this study was to investigate the wood species-adhesive combination in the tensile strength and failure modes of Manilkara huberi wood species manufactured with and without finger joints. The assemblies were made with untreated layers of wood with approximately 12% moisture using the polyurethane-based mono-component adhesive model Purbond HB 712. The amount of adhesive used in the finger joint was a single line of glue with 200g m-2 and pressure of 10 MPa. After 07 days of curing the adhesive, tensile tests were performed on specimens with and without finger joints, allowing the assessment of the efficiency of the joints also through variance analysis. The results of the tests revealed the ineffectiveness of the interface between the adhesive and the Manilkara huberi wood, since the rupture occurred on the glue line, configuring a type 1 failure mode, representing the worst rupture situation.
DOI: 10.6084/m9.figshare.20026715
title: Tensile strength of finger joints made of Manilkara huberi wood for use in glued laminated timber

description: Abstract The use of glued laminated timber structural elements requires an experimental study of combinations of wood species and the adhesives used. This aim of this study was to investigate the wood species-adhesive combination in the tensile strength and failure modes of Manilkara huberi wood species manufactured with and without finger joints. The assemblies were made with untreated layers of wood with approximately 12% moisture using the polyurethane-based mono-component adhesive model Purbond HB 712. The amount of adhesive used in the finger joint was a single line of glue with 200g m-2 and pressure of 10 MPa. After 07 days of curing the adhesive, tensile tests were performed on specimens with and without finger joints, allowing the assessment of the efficiency of the joints also through variance analysis. The results of the tests revealed the ineffectiveness of the interface between the adhesive and the Manilkara huberi wood, since the rupture occurred on the glue line, configuring a type 1 failure mode, representing the worst rupture situation.
DOI: 10.6084/m9.figshare.20026718
title: Analysis of the strategic elements in internationalization processes: Brazilian real estate companies targeting the residential market of Costa Rica

description: Abstract This paper presents a methodology of analysis of external and internal factors that Brazilian residential real estate companies may consider at a strategic level in their decision-making process in order to be able to determine their scope of action. This article presents a SWOT analysis evaluating the elements to be considered in an internationalization process, using the specific case of Brazilian real estate companies targeting the Costa Rican residential market. The analysis led to the identification of 12 strengths and 10 weaknesses in the internal environment of companies, as well as 24 opportunities and 20 risks in the Costa Rican real estate market. The study was complemented by the appraisal if those elements by 11 important companies acting the Brazilian residential sector. The study concluded that a mapping of the generalities and particularities of the potential market to be explored, as well as of the economic factors, and the social-political and cultural characteristics of the country can guide residential real estate companies in their decision-making process, evaluating these conditions according to their strengths (skills and abilities) and weaknesses. In this study, the Brazilian companies interviewed were disinclined to a possible move to the target market due to its size, barriers in the financial system, the lack of any knowledge about this specific market and a lack of internal skills to expand their usual target markets.
DOI: 10.6084/m9.figshare.20026718.v1
title: Analysis of the strategic elements in internationalization processes: Brazilian real estate companies targeting the residential market of Costa Rica

description: Abstract This paper presents a methodology of analysis of external and internal factors that Brazilian residential real estate companies may consider at a strategic level in their decision-making process in order to be able to determine their scope of action. This article presents a SWOT analysis evaluating the elements to be considered in an internationalization process, using the specific case of Brazilian real estate companies targeting the Costa Rican residential market. The analysis led to the identification of 12 strengths and 10 weaknesses in the internal environment of companies, as well as 24 opportunities and 20 risks in the Costa Rican real estate market. The study was complemented by the appraisal if those elements by 11 important companies acting the Brazilian residential sector. The study concluded that a mapping of the generalities and particularities of the potential market to be explored, as well as of the economic factors, and the social-political and cultural characteristics of the country can guide residential real estate companies in their decision-making process, evaluating these conditions according to their strengths (skills and abilities) and weaknesses. In this study, the Brazilian companies interviewed were disinclined to a possible move to the target market due to its size, barriers in the financial system, the lack of any knowledge about this specific market and a lack of internal skills to expand their usual target markets.
DOI: 10.6084/m9.figshare.20026720
title: Queen-post truss consisting of a rectangular timber cross section reinforced with steel bar

description: Abstract The systems called king and queen post trusses are formed by a main wood member, one or two vertical wood posts and tied by steel bar. These systems result in a lightweight structural model, offering easy handling, good rigidity and mechanical capacity. As well as evaluating the system's efficiency compared to a simple beam, this study analyses the experimental results and those generated by two different methods of calculation. In all three cases it was concluded that the afore mentioned system produces high efficiency, since the Red Angelim (Dinizia excelsa Ducke) beams presented an average stiffness gain of 623%, and the Pinus boards and parts presented a 518 % stiffness gain.
DOI: 10.6084/m9.figshare.20026720.v1
title: Queen-post truss consisting of a rectangular timber cross section reinforced with steel bar

description: Abstract The systems called king and queen post trusses are formed by a main wood member, one or two vertical wood posts and tied by steel bar. These systems result in a lightweight structural model, offering easy handling, good rigidity and mechanical capacity. As well as evaluating the system's efficiency compared to a simple beam, this study analyses the experimental results and those generated by two different methods of calculation. In all three cases it was concluded that the afore mentioned system produces high efficiency, since the Red Angelim (Dinizia excelsa Ducke) beams presented an average stiffness gain of 623%, and the Pinus boards and parts presented a 518 % stiffness gain.
DOI: 10.6084/m9.figshare.20026721
title: Influence of crushed aggregates filler on the properties of rendering mortar

description: Abstract This article evaluates the use of crushed fine aggregates on rendering mortar produced with crushed sand. Mortar admixtures at 1: 1: 6 proportion (cement, lime, crushed fine aggregate, in volume) with CP II Z-32 Brazilian cement, CH-I lime, fine crushed basalt aggregate and five different percentages of filler made of crushed basalt were produced. The main properties and the shrinkage of the rendering mortar were evaluated. The use of 10% of filler results in a workable mortar with improved mechanical properties and shrinkage within acceptable limits
DOI: 10.6084/m9.figshare.20026721.v1
title: Influence of crushed aggregates filler on the properties of rendering mortar

description: Abstract This article evaluates the use of crushed fine aggregates on rendering mortar produced with crushed sand. Mortar admixtures at 1: 1: 6 proportion (cement, lime, crushed fine aggregate, in volume) with CP II Z-32 Brazilian cement, CH-I lime, fine crushed basalt aggregate and five different percentages of filler made of crushed basalt were produced. The main properties and the shrinkage of the rendering mortar were evaluated. The use of 10% of filler results in a workable mortar with improved mechanical properties and shrinkage within acceptable limits
DOI: 10.6084/m9.figshare.20026726
title: Determination of the carbon dioxide emissions of raw materials used in the production of concrete in the northern region of the state of Rio Grande do Sul, Brazil

description: Abstract Concrete is one of the most widely used materials in the Brazilian construction industry. This widespread use is mainly due to the easiness of implementation and adaptation to various forms. The reduction of the consumption of materials involved in the production of concrete is one way to achieve more sustainable construction. These reductions, if evaluated taking into account also the impacts that the production generates in the environment, are likely to enhance or redirect the conclusions or decisions to be made regarding the quest for greater environmental sustainability. With this objective in mind, the carbon dioxide (CO2) emissions and the environmental impacts of the production of concrete were evaluated, considering the extraction and production of materials (binder, coarse aggregates, fine aggregates and steel) used in the northern region of Rio Grande do Sul state, Brazil. One of the conclusions of the study was that lower strength concrete produces lower CO2emissions, and that the influence of transport emissions is significant due to the long distances that most of the raw materials must cover.
DOI: 10.6084/m9.figshare.20026726.v1
title: Determination of the carbon dioxide emissions of raw materials used in the production of concrete in the northern region of the state of Rio Grande do Sul, Brazil

description: Abstract Concrete is one of the most widely used materials in the Brazilian construction industry. This widespread use is mainly due to the easiness of implementation and adaptation to various forms. The reduction of the consumption of materials involved in the production of concrete is one way to achieve more sustainable construction. These reductions, if evaluated taking into account also the impacts that the production generates in the environment, are likely to enhance or redirect the conclusions or decisions to be made regarding the quest for greater environmental sustainability. With this objective in mind, the carbon dioxide (CO2) emissions and the environmental impacts of the production of concrete were evaluated, considering the extraction and production of materials (binder, coarse aggregates, fine aggregates and steel) used in the northern region of Rio Grande do Sul state, Brazil. One of the conclusions of the study was that lower strength concrete produces lower CO2emissions, and that the influence of transport emissions is significant due to the long distances that most of the raw materials must cover.
DOI: 10.6084/m9.figshare.20026727
title: C&D waste gravimetric composition for the final finishing in horizontal residential buildings construction

description: Abstract Construction and demolition (C&D) waste generated in the finishing stage of a construction project represents a large portion of the total waste generated on a construction site. Most of that waste can be recycled and reused on site. However, recycling actions on construction sites are not routinely used due to the difficulty to identify, separate and sort waste. Knowing the exact C&D waste quantity and quality per stage is essential for its technical and economic reuse. This case study presents a C&D waste gravimetric composition from the final finishing stage of a horizontal residential condominium construction. The results confirmed that 92% of the C&D waste from the final finishing stage could be recycled. The gravimetric composition showed that 39.13% of it was wood; 23.19% was plastic, paper and metal; 16.09% was gypsum and plaster; 12.99% was demolition waste (concrete, mortar, ceramic, etc.); 8.38% was contaminated waste and 0.22% was wire. The quantity results demonstrated a waste generation of 0.58m3/house or 0.012m3/m2 built area. The index obtained to the final fine finishing was 0.46 m3/house or 0.0098 m3/m2 and at the stage of coating with mortar and plaster was 1.11 m3/house or 0.0237 m3/m2.
DOI: 10.6084/m9.figshare.20026727.v1
title: C&D waste gravimetric composition for the final finishing in horizontal residential buildings construction

description: Abstract Construction and demolition (C&D) waste generated in the finishing stage of a construction project represents a large portion of the total waste generated on a construction site. Most of that waste can be recycled and reused on site. However, recycling actions on construction sites are not routinely used due to the difficulty to identify, separate and sort waste. Knowing the exact C&D waste quantity and quality per stage is essential for its technical and economic reuse. This case study presents a C&D waste gravimetric composition from the final finishing stage of a horizontal residential condominium construction. The results confirmed that 92% of the C&D waste from the final finishing stage could be recycled. The gravimetric composition showed that 39.13% of it was wood; 23.19% was plastic, paper and metal; 16.09% was gypsum and plaster; 12.99% was demolition waste (concrete, mortar, ceramic, etc.); 8.38% was contaminated waste and 0.22% was wire. The quantity results demonstrated a waste generation of 0.58m3/house or 0.012m3/m2 built area. The index obtained to the final fine finishing was 0.46 m3/house or 0.0098 m3/m2 and at the stage of coating with mortar and plaster was 1.11 m3/house or 0.0237 m3/m2.
DOI: 10.6084/m9.figshare.20026742
title: Design of masonry walls in situations of fire: a contribution for a future Brazilian standard

description: Abstract In Brazil, there is no standard regarding the design of masonry walls in fire situations. According to the Fire Department of the state of São Paulo (2011), either the Eurocode 6 (2005) or an equally recognized international Standard should be used in such a situation. In this article, design specifications for masonry walls in situation of fire are presented, according to the standard requirements in the United States of America, Europe and Australia. One might question the applicability of these codes in the Brazilian context, due to the different materials the structural units are made of and the rendering applied on the walls. Taking that into account, we suggest that the applicable elements of the three international standards should be gradually integrated into the development of a Brazilian standard.
DOI: 10.6084/m9.figshare.20026742.v1
title: Design of masonry walls in situations of fire: a contribution for a future Brazilian standard

description: Abstract In Brazil, there is no standard regarding the design of masonry walls in fire situations. According to the Fire Department of the state of São Paulo (2011), either the Eurocode 6 (2005) or an equally recognized international Standard should be used in such a situation. In this article, design specifications for masonry walls in situation of fire are presented, according to the standard requirements in the United States of America, Europe and Australia. One might question the applicability of these codes in the Brazilian context, due to the different materials the structural units are made of and the rendering applied on the walls. Taking that into account, we suggest that the applicable elements of the three international standards should be gradually integrated into the development of a Brazilian standard.
DOI: 10.6084/m9.figshare.20026744
title: Use of polishing alumina as flame retardant in orthophthalic polyester resin matrix composites

description: Abstract These composites display excellent mechanical properties but must be adapted to the combustibility properties. The study aimed to produce polymer concrete composites using waste alumina from the metallurgic industrial processing. The composites have an ortophtalic polyester resin as a binder, as aggregates river sand and fly ash as filler. Two kinds of flame retardant were used: a residue, polishing alumina and the other virgin, commercial alumina in four different percentage 15, 30, 45 and 60% in mass in relation to the resin. The samples were subjected to testing of flexural strength, combustibility tests and temperature changes of 125, 225 and 325°C. Results had statistical treatment in order to evaluate the variable significance in relation to the studied properties. This study composites displayed values about 30 MPa for flexural strength. The statistical analysis showed that the factors temperature changes, percentage of addition and the interaction among these factors posed great influence on the studied compositions in relation to the heating strength testing. In general terms, it can be said that the flame retardant waste, polishing alumina is an efficient alternative to substitute the trihydrated commercial alumina in the polymer concrete composites with the other components proposed in this study.
DOI: 10.6084/m9.figshare.20026744.v1
title: Use of polishing alumina as flame retardant in orthophthalic polyester resin matrix composites

description: Abstract These composites display excellent mechanical properties but must be adapted to the combustibility properties. The study aimed to produce polymer concrete composites using waste alumina from the metallurgic industrial processing. The composites have an ortophtalic polyester resin as a binder, as aggregates river sand and fly ash as filler. Two kinds of flame retardant were used: a residue, polishing alumina and the other virgin, commercial alumina in four different percentage 15, 30, 45 and 60% in mass in relation to the resin. The samples were subjected to testing of flexural strength, combustibility tests and temperature changes of 125, 225 and 325°C. Results had statistical treatment in order to evaluate the variable significance in relation to the studied properties. This study composites displayed values about 30 MPa for flexural strength. The statistical analysis showed that the factors temperature changes, percentage of addition and the interaction among these factors posed great influence on the studied compositions in relation to the heating strength testing. In general terms, it can be said that the flame retardant waste, polishing alumina is an efficient alternative to substitute the trihydrated commercial alumina in the polymer concrete composites with the other components proposed in this study.
DOI: 10.6084/m9.figshare.20026745
title: Adherence of ceramic tiles on structural ceramic block masonry

description: Abstract The aim of this paper is to assess the mechanical behaviour of ceramic tiles on a structural masonry wall submitted to vertical loading. This study presents the results and conclusions of experiments carried out on ceramic block masonry walls coated with ceramic tiles and submitted to increasing vertical loads up to the system's complete failure. The ceramic tiling was applied on the walls using dry set mortars either directly on the blocks or on a plastering mortar layer. During the tests, all the important events, such as strains, onset cracks, tile detaching, rupture shape and load values, were registered. It was possible to determine the relationship between loads and the occurrence of cracks or tile detachment. Cracking or detachment of ceramic tiles only occurred at load values close to each wall's failure load. That indicates that the tiles had good adherence to the wall up to loads much higher than those expected. This indicates that the rendering tyles did not have any visual or mechanical failures when they were on walls under service loads