cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.14287249.v1
title: Chloride penetration in concretes exposed in a marine atmosphere zone for a period of 9 years

description: Abstract Corrosion in reinforced concrete structures is the most recurrent pathological manifestation in concrete structures, causing greater concern in coastal regions due to the presence of chloride ions. That said, there is a notable lack of data on the chloride concentration of concrete in natural conditions of exposure, especially in the marine atmosphere zone. Hence, this study aimed to evaluate the chloride profiles of concrete blocks molded with silica fume contents of 5% (CP V_5SA) and 10% (CP V_10SA) in relation to cement mass and w/b ratios of 0.45, 0.55 and 0.65. The concretes remained exposed in a marine atmosphere zone for a period of 9 years in Tramandaí, Rio Grande do Sul, Brazil. Powder samples were taken from the concrete blocks for further determination of the water-soluble chloride concentration. With regards to corrosion, the use of silica fume content in percentages of 5% and 10% is efficient in reducing chloride penetration; low w/b ratios showed higher surface concentrations. However, as the depth of the concrete surface increases, there is a reduction in these contents. In addition, the study showed that the reduction of the w/b ratio and the incorporation of silica fume were effective measures in reducing the concentration of chlorides over time.
DOI: 10.22008/fk2/oiajvo/rte5yq
title: al.tif

description: SICE version: Cloud removed, PPGC, SNAP7, pySICEv1.4
DOI: 10.6084/m9.figshare.14287247.v1
title: Multi-objective optimisation targeted at the thermal performance of low-energy buildings design in southern Brazil

description: Abstract The aim of this paper is to present the potential of a multi-objective optimisation of architectural design solutions that offer better thermal comfort conditions and lower energy consumption. The study was applied in a rectangular box model as a single thermal zone, and different values were considered for the constructive parameters of the building. In addition, the following elements of the envelope were also analysed: solar orientation, the properties of opaque and transparent materials, window dimensions and sunshade. The EnergyPlus software associated with the JEPlus + EA parameterisation and optimisation tool were used for the simulations. The optimisation process considered the minimisation for both the Heating Degree Hours (GHa) and Cooling Degree Hours (GHr). This minimisation is interesting for cities with a humid temperate climate in southern Brazil, where it is necessary to adopt conflicting building design strategies due to the different winter and summer conditions. The results for the envelope configurations for one given model site orientation are presented through the Pareto Frontier. Hence, it is possible to identify the relationship between the various designed parameters assumed, with the minimisation of the established energy consumption requirements for the architectural model analysed.
DOI: 10.22008/fk2/oiajvo/aq1gq0
title: albedo_bb_planar_sw.tif

description: SICE version: Cloud removed, PPGC, SNAP7, pySICEv1.4
DOI: 10.6084/m9.figshare.14287244.v1
title: Analysis of the residual yield (fy) and ultimate (fu) stress of steel reinforcing bars from concrete columns exposed to elevated temperatures

description: Abstract This paper presents results obtained in tensile tests performed in steel reinforcing bars with different diameters extracted from columns exposed for 240 minutes to the standard fire curve prescribed by ISO 834-1:1999. The square columns were 300 cm long and had a width of 25 mm. The longitudinal reinforcement consisted of 10 mm and 16 mm-diameter steel bars with a concrete cover thickness of 25, 30, 40, and 50 mm. Results showed that 16 mm-diameter bars presented lower yield (fy) and ultimate (fu) stress due to the larger spalled areas of concrete in those columns, which increased its exposure to elevated temperatures. Columns with higher concrete cover thickness (50 mm) presented larger volume of concrete spalling and were accounted to be 52 times higher than elements with cover thickness of 25 mm. It was verified that the residual yield stress was 29-56% lower than the original yield strength, highlighting the the need of a proper post-fire assessment of this type of structure after exposure to fire.
DOI: 10.22008/fk2/oiajvo/jxyfwa
title: diagnostic_retrieval.tif

description: SICE version: Cloud removed, PPGC, SNAP7, pySICEv1.4
DOI: 10.22008/fk2/oiajvo/2sbkhd
title: grain_diameter.tif

description: SICE version: Cloud removed, PPGC, SNAP7, pySICEv1.4
DOI: 10.6084/m9.figshare.14287243.v1
title: Analysis of the application of temporal and maximum metrics in the evaluation of sound pollution generated by a helipad

description: Abstract Noise pollution in cities derives from various sources, including aeronautical noise. Aircraft noise is a potential cause of discomfort for the general population. National and international standards use temporal metrics, obtained through the logarithmic mean of instantaneous measurements over a period. But there is still potential for discomfort even in places where those criteria are met, as reported in the literature, especially when an aircraft flies over the receiver. This researchstudy aimed to evaluate the application of temporal and maximum metrics in the quantification of sound pollution generated by a helipad. Seventy hours of measurement were performed following to the procedures of NBR 13368 (ABNT, 1995) and dose-response curves were used to evaluate the results obtained. The results indicate that when using temporal metrics, the normative evaluation criteria are met, even though there is potential for discomfort of 30% of the population. During the measurements, differences of about 30 dB between background noise and peak noise were observed during aircraft overfly with an average frequency of 12 min. The conclusion is that meeting the evaluation criteria based on time metrics does not guarantee the acoustic comfort of the population.
DOI: 10.22008/fk2/oiajvo/1bijzr
title: r0.tif

description: SICE version: Cloud removed, PPGC, SNAP7, pySICEv1.4
DOI: 10.6084/m9.figshare.14287240.v1
title: Portlandite consumption by red ceramic waste due to alkali activation reaction

description: Abstract Red ceramics, due to the low compressive strength and high porosity, make it difficult to use it as an artificial aggregate in the production of mortars and concretes. However, since it has a silicon-rich composition, the ceramic material from blocks and tiles has been studied as a possible supplementary cementitious material in concrete and also as a raw material in alkali-activated binders. This paper aims to evaluate the content of calcium hydroxide (portlandite) fixed in the alkali activation reaction and the microstructure of red clay waste from construction and demolition waste (CDW) and hydrated lime mixtures, varying the atomic ratio between the silicon and the calcium. The results indicated that higher availability of lime is directly related to the content of hydrated compounds and its porosity. The increase in the silicon/calcium ratio resulted in a reduction of available lime content by 40% and an increase, in volume, of micropores by 7%.
DOI: 10.22008/fk2/oiajvo/b4fro6
title: snow_specific_area.tif

description: SICE version: Cloud removed, PPGC, SNAP7, pySICEv1.4
DOI: 10.22008/fk2/oiajvo/nj70a3
title: al.tif

description: SICE version: Cloud removed, PPGC, SNAP7, pySICEv1.4
DOI: 10.6084/m9.figshare.14287239.v1
title: Inclusive architecture: a co-design experience

description: Abstract This paper presents the use of co-design in architecture as a form of social inclusion for Visually Impaired People through a partnership between an association of blind people (community) and the Postgraduate Program in Architecture and Urbanism (Higher Education Institution). This article shows the results of a co-design action, which will assist in the achievement of a broader research goal, aiming to define co-design methods, techniques and tools applied to the inclusion of visually impaired people in the process of architecture, urbanism, landscaping and interior design. This research study reports on two stages of a co-design project: the co-design of a waiting / reception room and a socialising and leisure external area (with the Association’s adults), and the development of two toys for these spaces (with the Association’s children). The research methods chosen were focus groups, the interaction with the tactile model and accompanied tours. The results demonstrate the importance of co-design as a way to include visually impaired people, enhancing their well-being and self-esteem, as they effectively participate in the creation of the environment which they are part of and leave the passive zone that they normally find themselves in during the architectural design process.
DOI: 10.22008/fk2/oiajvo/ggv3ho
title: albedo_bb_planar_sw.tif

description: SICE version: Cloud removed, PPGC, SNAP7, pySICEv1.4
DOI: 10.6084/m9.figshare.14287238.v1
title: Stakeholder perceptions of offsite construction techniques: systematic review

description: Abstract In the past few decades, a faster uptake has been noticed for offsite construction techniques, as supported by several relevant research streams. This study focused on the perceptions of stakeholders, which is an important research field, in terms of the manifold experiences and their critical role in decision-making. The purpose of this work was to gather quantifiable information regarding benefits and barriers of offsite construction to assist in the development or improvement of tools and strategic guidelines for the decision-making process. In total, 24 papers were selected by combining the systematic review with the snowball sampling technique to survey and quantify the perceptions of 1,625 stakeholders, and to obtain 238 barrier indexes and 99 benefit indexes. A hierarchical cluster analysis was also conducted to frame 10 clusters for benefits and another 10 for barriers. In addition, a co-citation analysis was carried out to identify 7 clusters and the associated connections between them. A database was provided with barriers and benefits, ranked by their relevance to offsite construction, as well as the bibliometrics and co-citation analysis that may help choose the best-fit source/perception for the purpose of the readers.
DOI: 10.22008/fk2/oiajvo/fqxons
title: diagnostic_retrieval.tif

description: SICE version: Cloud removed, PPGC, SNAP7, pySICEv1.4
DOI: 10.6084/m9.figshare.14287237.v1
title: Evaluation of alternatives for reducing household potable water consumption: case study in Caruaru, PE, Brazil

description: Abstract In a scenario of water crisis, such as that experienced by the Brazilian Agreste region in recent years, the sustainability of water supply has been the aim of several investigations. This research project involved the study of the hypothetical implementation of technological alternatives for reducing household potable water consumption in Caruaru, PE. The alternatives were evaluated from a multicriteria perspective. That perspective takes into account environmental, technical, economic and social criteria, which are identified through designs, market research and interviews with residents and experts. With the application of the multicriteria method Promethee II, it was possible to verify that the implementation of water-saving devices is the most suitable alternative for the region. This alternative promotes a 29.11% reduction in water consumption, while the payback period was estimated at 16 months. The long term required to recover the capital in the other alternatives highlights the need for government policies offering financial incentives to the population, preventing the region’s socioeconomic conditions from being the main obstacle for the adoption of water resources conservation practices.
DOI: 10.22008/fk2/oiajvo/rzmjd0
title: grain_diameter.tif

description: SICE version: Cloud removed, PPGC, SNAP7, pySICEv1.4
DOI: 10.22008/fk2/oiajvo/xhza3l
title: r0.tif

description: SICE version: Cloud removed, PPGC, SNAP7, pySICEv1.4
DOI: 10.6084/m9.figshare.14287235.v1
title: Reciprocal frame structures: a systematic literature review and identification of critical points for design and production

description: Abstract Reciprocal Frame Structures (RFs) date from the Neolithic period, where they were originally produced in wood and comprised of small sized elements. It is also a structural system that can adapt to freeform and complex geometries, with great aesthetic potential, as indicated by several contemporary research studies. However, these structures could make better use of the digital technologies available for design, analysis, manufacturing and assembly. This paper aims to identify the current gaps where research efforts focus on in order to make RF technology more viable. A systematic literature review (SLR) was performed in seven different databases. A total of 180 articles were found, of which 49 were selected for analysis. 27 of those papers identified existing gaps, which were then compiled into five categories: (a) difficulties in geometric / structural design; (b) need for enhancement of digital tools; (c) difficulty in connections design, analysis, manufacturing and assembly; (d) difficulty in understanding the real contribution of prototypes to large scale applications; and (e) need to incorporate the assembly process in the design of RF. The study concluded that the development of new structural analysis devices combined with the creation of new constructive details may contribute to expanding the use of RFs.
DOI: 10.22008/fk2/oiajvo/bnstpc
title: snow_specific_area.tif

description: SICE version: Cloud removed, PPGC, SNAP7, pySICEv1.4
DOI: 10.6084/m9.figshare.14287232.v1
title: Impact noise isolation on a floor system with coating application on the original floor

description: Abstract The classification of acoustic performance to impact noise in floor systems provided for in NBR 15575-3 (ABNT, 2013) is only required for new multi-floor buildings. This article addresses the noise problems occurring in buildings constructed before 2013. This study seeks for an alternative form of acoustic correction by applying a new coating on the original flooring. In order to do this, the following conditions were considered: ease of execution and lower increment in the total thickness of the floor system. An experimental study was performed in two acoustic chambers and on the field (residential building), where acoustic efficiency was verified in a real case. The new coatings applied on the original floor (enamelled ceramic) were: wood laminate; extra fine porcelain tiles and the same type of ceramic as the original flooring. The two latter did not have a resilient material between them and the original floor. The results showed that the proposed alternative has the potential to correct impact noise problems in floor systems between superimposed autonomous dwelling units. The systems using laminate wood on the original floor proved to be the most effective, as they combine greater acoustic insulation against the impact noise (until 28 dB), small increase in the final thickness of the system (1.6 cm) and ease of execution.
DOI: 10.22008/fk2/oiajvo/xiqiq3
title: al.tif

description: SICE version: Cloud removed, PPGC, SNAP7, pySICEv1.4
DOI: 10.22008/fk2/oiajvo/yg139j
title: albedo_bb_planar_sw.tif

description: SICE version: Cloud removed, PPGC, SNAP7, pySICEv1.4
DOI: 10.6084/m9.figshare.14287231.v1
title: Physical-mechanical production and evaluation of medium and high density waste panels

description: Abstract Brazil has seen a growing number of studies on the use of sawdust from industrial processes for the production of wood panels with added value to minimise forest exploration. In this article, five treatments with mixtures of wood particles from carpentry shops and sugarcane bagasse were examined. For particle homogenisation, granulometric composition studies were conducted; subsequently, three panels were made for each treatment, with the addition of 10% of polyurethane resin from castor oil, and evaluations were performed to determine the physical and mechanical properties of the panels. The physical and mechanical properties obtained with the mixtures with 50% of sawdust and 50% of sugarcane bagasse indicated that the production of panels for indoor use under dry conditions is possible.
DOI: 10.22008/fk2/oiajvo/xpjk5x
title: diagnostic_retrieval.tif

description: SICE version: Cloud removed, PPGC, SNAP7, pySICEv1.4
DOI: 10.6084/m9.figshare.14287226.v1
title: Evaluation of the incorporation of construction waste (CW) for the stabilization of soil-cement mixtures

description: Abstract The reuse of construction waste (CW) has been increasingly adopted as a way to reduce the environmental impact from inadequate disposal of this material worldwide. The stabilization of soils with cement is a common practice, enabling the use of this material in a variety of projects. However, depending on the type of soil, frequently large quantities of cement are needed, making the technique impracticable. The use of CW in the soil stabilization process may be an alternative for reducing the amount of cement and improving the strength of the mixture. The objective of this work was to investigate the use of CW to partially replace a lateritic clay soil in soil-cement mixtures. Besides the natural soil (S), a mixture of soil and CW (S-CW) was used with proportions of 50% of each. The cement content levels evaluated were 0%, 4%, 6% and 8% and the curing periods varied from 7 to 28 days. The results showed superior strength values for the S-CW compared to the soil-cement. This confirms that the use of CW reduces the percentage of cement necessary for the stabilization of a clayey soil and presents an alternative, more environmentally appropriate destination for this material.
DOI: 10.22008/fk2/oiajvo/srigqw
title: grain_diameter.tif

description: SICE version: Cloud removed, PPGC, SNAP7, pySICEv1.4
DOI: 10.6084/m9.figshare.14287225.v1
title: Isoviews applied to location of information units for pedestrian mobility

description: Abstract In Urban Mobility, one of the most discouraging factors for the movement of pedestrians is the lack of information on urban areas. The proper availability of spatial information, such as pedestrian routes, the proximity of bus stops are among the factors that improve the quality of mobility and promote the appropriation of public areas. Information, when well-located, tends to provide greater space clarity and displacement optimisation. Thus, a method was developed to identify the spatial location of Pedestrian Information Units (PIUs) using the Spatial Syntax tool, the Isovists analysis and the Depthmap software. This method was applied at a subway station “Praça do Relógio” in Brasilia, DF, and that made it possible to identify the highest potential and visibility points for the positioning of PIUs, thus assisting urban interventions to integrate pedestrian movements into the transport system. Furthermore, the method can also be applied, with the necessary adaptations, to the terminals and stopping points of other modes of public transport.
DOI: 10.22008/fk2/oiajvo/axknhv
title: r0.tif

description: SICE version: Cloud removed, PPGC, SNAP7, pySICEv1.4
DOI: 10.6084/m9.figshare.14287223.v1
title: Mortar with refractory waste for passive fire protection

description: Abstract Passive fire protection (PFP) is a field of study applied to the civil construction industry. Refractory brick waste contains elements that can contribute to the properties necessary for PFP. Therefore, this study developed a mortar with refractory brick waste for use as PFP. The authors proposed four formulations with compressive and flexural strength, bulk density and apparent porosity, thermal conductivity, and linear variation that were evaluated before and after heat treatment at 600 °C and 1100 °C. The density did not show significant differences between the formulations. The porosity increased after the heat treatment. The mixture that showed the highest shrinkage at 1100 °C was the one with the highest gypsum content, and all the other ones had shrinkage values lower than the maximum allowed by the C195 standard. The mixture that used the highest amount of gypsum was the one that obtained the lowest thermal conductivity. Therefore, it is concluded that using refractory waste is viable for the development of PFP mortars because they meet the regulatory requirements.
DOI: 10.22008/fk2/oiajvo/nmgc63
title: snow_specific_area.tif

description: SICE version: Cloud removed, PPGC, SNAP7, pySICEv1.4
DOI: 10.6084/m9.figshare.14287221.v1
title: Self-compacting soil-cement with incorporation of sand from construction waste for application in a vertical panel system

description: Abstract The aim of this study is to analyse the influence of the incorporation of construction waste (CW) sand on the physical and mechanical behaviour of self-compacting soil-cement (SCSC) mixes, aiming at its application in a monolithic vertical panel system. The research method consists of conducting laboratory tests, considering an initial proportion of cement-soil with a 1:5 ratio, and four additional mixes, in which soil was replaced by CCW sand at intervals of 25% up to 100%, in mass. In the fresh state, tests were conducted to determine fluid consistency (ranging from 660 to 750 mm), mass density and the air content incorporated in the mixes. In the hardened state, simple compressive strength, water absorption and voids content tests were undertaken. Improvements in the workability and mass flow rate were observed in the hybrid mixes, and higher mechanical strengths were obtained with the incorporation of 25% and 50% of CCW sand, indicating an ideal dosage within this interval. In addition, the incorporation of CCW sand reduced water absorption, with values below 20% in all hybrid mixes. The study concluded that the use of CCW sand in SCSC mixes has the potential to be applied in the Vertical Monolithic Panel System.
DOI: 10.22008/fk2/oiajvo/wwwgm9
title: al.tif

description: SICE version: Cloud removed, PPGC, SNAP7, pySICEv1.4
DOI: 10.22008/fk2/oiajvo/4ngliv
title: albedo_bb_planar_sw.tif

description: SICE version: Cloud removed, PPGC, SNAP7, pySICEv1.4
DOI: 10.6084/m9.figshare.14287220.v1
title: Relationship between shear strength and compressive strength parallel to grains of hardwoods

description: Abstract In Brazil, the standard NBR 7190: 1997 establishes testing methods to determine the physical and mechanical properties of the material. However, the tests require that the procedures be undertaken in specialised, high-cost laboratories. The Brazilian code sets different values for relations between shear strength and compression strength parallel to the grain. The aim of this study was to investigate the relation between compressive strength and shear strength parallel to the grain, considering the results of the tests of those properties. The results were compared with the relation values set by the Brazilian Standard NBR 7190:1997, and the optimal coefficient found was 86.4% higher than the coefficient set by the Brazilian standard, considering the set of all species. With regards to the variation in the relation between the investigated properties, considering the different classes of wood resistance in this study, no decreases were found in the values of the optimal coefficients as the classes increase (a situation described in the NBR 7190:1997 standard), which represent one further divergent result.
DOI: 10.22008/fk2/oiajvo/xlorcz
title: diagnostic_retrieval.tif

description: SICE version: Cloud removed, PPGC, SNAP7, pySICEv1.4
DOI: 10.22008/fk2/oiajvo/un1roz
title: grain_diameter.tif

description: SICE version: Cloud removed, PPGC, SNAP7, pySICEv1.4