cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.14287312
title: Calcium hydroxide influence in autogenous self-healing of cement-based materials in various environmental conditions

description: Abstract Several factors, such as chemical shrinkage or environmental attack can produce concrete cracks. Calcium hydroxide content from the environment or cement hydration can promote the self-healing phenomenon (SHP). This study evaluates the calcium hydroxide concentration influence on the self-healing phenomenon of cement-based materials. Cracked mortars with different types of cement, such as a filler, pozzolanic, and high initial strength, were exposed to four environmental conditions. Titration was the method proposed to determine the amount of calcium hydroxide content leached in the water, and the cracks closure were analyzed by optical microscopy. CPII F (Portland Cement, type II, compound with limestone) samples showed no trend to Ca(OH)2 leached, and to superficial cracking closure. Regarding CPV (Portland cement, type V, high initial strength cement) samples, their behavior showed the highest Ca(OH)2 content to all environmental exposure, and cracking closure to samples in submerged condition. Thus, a significant influence in the cracks´ closure regarding the presence of Ca2+ leached to the exposure environments, and a water source related to this behavior seems to be a primary factor to improve the SHP.
DOI: 10.6084/m9.figshare.14287310
title: Influence of ceramic block geometry and mortar coating on the sound reduction of walls

description: Abstract The materials that compose a construction system influence directly the acoustic performance of buildings.In masonry systems, through experiments, the geometry of the blocks and the types of coating were perceived as fundamental factors on the acoustic performance of walls. Therefore, this study intends to enrich the database and promote analysis for the civil construction industry by evaluating the airborne sound reduction of masonry walls composed by ceramic blocks with and without mortar coating. Accordingly, different partitions made of different ceramic blocks were built to determine the performance discrepancies in the partitions’ behavior due to physical characteristics and the influence of the mortar coating. These analyses were made in laboratory. As a result, without coating, the highest sound reduction was observed in the samples with more bulk mass and higher Aliq/At ratio (relationship between the net and gross areas of the ceramic blocks). Then, with the mortar coating, the coating improved the sound reduction. Moreover, the bulk mass was the most influential characteristic in comparison to the Aliq/At ratio, even though the best results were obtained in the samples with higher Aliq/At ratios.
DOI: 10.6084/m9.figshare.14287307
title: Information workflow proposal for integrating cost estimating, scheduling, and monitoring with BIM in SMEs

description: Abstract Although many studies have emphasized the benefits of the integration of Building Information Modeling (BIM), there is no consensus on the information workflow among main processes used in construction, particularly in small- and medium-size enterprises (SMEs). Therefore, this work proposes an information workflow that integrates 3D BIM modeling, cost estimating, scheduling, and monitoring processes in SMEs (ICSM Information Workflow). This research adopts the design science research approach, which includes (a) a literature review and a study of the information workflow among the processes, (b) a proposal of an information workflow based on certain assumptions for integration, (c) a participatory process for testing and adapting the proposed workflow, and (d) an evaluation of the proposed information workflow. The results indicate the participatory and cyclical processes that were proposed to define the work packages using a standard WBS and a database for information integration were the key for integrating people, technologies, and processes. The main contributions of this study are the proposal of an information workflow that integrates cost estimating, scheduling, and monitoring with BIM in SMEs, and the lessons learned based on the pilot test and evaluation of the ICSM Information Workflow in one of the two projects studied.
DOI: 10.6084/m9.figshare.14287304
title: BIM maturity model for higher education institutions

description: Abstrac The literature presents several BIM maturity models for projects, organizations and individuals. However, there is still a gap in models for Higher Education Institutions (HEIs). Consequently, there is an absence of studies that measure the BIM maturity of those institutions. Thus, the present study aims at (i) present a BIM maturity matrix model for HEIs; (ii) perform the measurement of BIM maturity in the HEIs in the state of Ceará, Brazil. The developed model is structured into three BIM fields (Policies, Processes and Technology), through 16 criteria and divided into five maturity levels. This research analyzed 26 courses in Civil Engineering as well as Architecture and Urbanism, in both public and private HEIs, therefore obtaining the Degree of Maturity, the Maturity Index, as well as the characteristics of BIM use. As a contribution, the study presents: (i) a theoretical contribution through the proposal of a BIM maturity model for HEIs, allowing other institutions to measure their performance; (ii) BIM characterization in HEIs, as well as the barriers for its adoption, uses and BIM disciplines; (iii) measurement of HEIs' maturity. The measurement of BIM maturity in the HEIs in Ceará state allowed an overview of them, becoming part of a macro-diagnostic state in the sector.
DOI: 10.6084/m9.figshare.14287303
title: Evaluation of capabilities of different global sensitivity analysis techniques for building energy simulation: experiment on design variables

description: Abstract The objective of this study is to investigate the capabilities of different global sensitivity analysis methods applied to building performance simulation, i.e. Morris, Monte Carlo, Design of Experiments, and Sobol methods. A single-zone commercial building located in Florianópolis, southern Brazil, was used as a case study. Fifteen inputs related to design variables were considered, such as thermal properties of the construction envelope, solar orientation, and fenestration characteristics. The performance measures were the annual heating and cooling loads. It was found that each method can provide different visual capabilities and measures of interpretation, but, in general, there was little difference in showing the most influent and least influent variables. For the heating loads, the thermal transmittances were the most influent variables, while for the cooling loads, the solar absorptances stood out. The Morris method showed to be the most feasible method due to its simplicity and low computational cost. However, as the building simulation model is still complex and non-linear, the variance-based method such as the Sobol is still necessary for general purposes.
DOI: 10.6084/m9.figshare.14287300
title: Determining the flow rate for choosing water meters of residential buildings with individual metering

description: Abstract The implementation of the individual measurement system requires the correct adjustment of the water meters. Thus, the determination of project flow rates is one of the premises for proper system performance. From this point of view, this article aims to compare the design flow values with the flow values obtained in apartments in operation. An investigation was carried out into 20 housing units, in which the flows were identified and their water consumption profiles and the actual flow distribution over time defined. We compared the flows calculated by the method proposed by Gonçalves (1986) in addition to the methods used in the Brazilian, Portuguese and European standards with the actual flows measured and indicated in a technical standard, using descriptive statistics techniques and using probabilistic data modeling. It was possible to verify that the values derived from the probabilistic method were the closest to the real measurements. It was concluded that the use of probabilistic method reduces the nominal flow of the chosen water meters, which can increase the accuracy and, consequently, the measured volume for the local utility. It also contributed to improve the procedures for assessing the design of water meters.
DOI: 10.6084/m9.figshare.14287298
title: Multi-objective optimization of the geometry of single-family housing to improve thermal performance

description: Abstract Brazil's current housing deficit exceeds 6 million homes and a demand of 10 million homes for low-income families is expected by 2040. On the other hand, during the last 10 years, approximately 850,000 social housing units have been delivered through the "My House, My Life" Program - (Programa Minha Casa, Minha Vida - PMCMV). Despite these numbers, several studies suggest some problems related to the low quality of the houses. This article aims to investigate the design parameter related to the geometry of social housing in Chapecó/SC, Brazil, which contributes to the achievement of the best thermal performance. Parametric methods and multi-objective optimizations were utilized, two objective-functions were optimized regarding the degree-hours for cooling and heating. The results showed significant improvements, reaching up to 98% during the hot period and 49% during the cold period. Guidelines were defined to assist architects in the early-phases of the social housing design based on the climate of the target region. However, the best design solutions for thermal comfort throughout the year can only be indicated with computational methods.
DOI: 10.6084/m9.figshare.14287297
title: Natural ventilation for office building retrofit in dense urban context under hot and humid climate

description: Abstract Recent studies underline that simple and non-invasive retrofit solutions can recover natural ventilation potential in existing buildings under temperate climate. Nonetheless, the efficiency of these solutions in dense urban contexts under hot and humid climate remains unclear. This paper aims to evaluate the thermal comfort gains caused by natural ventilation when retrofitting an office building in downtown Rio de Janeiro. Computational Fluid Dynamics (CFD) and thermal simulations are carried out on Ansys CFX and Design builder to assess indoor air flow before and after retrofit. The diagnosis of the current scenario indicates that the surrounding buildings block a significant part of the wind flow, and occupants experience only a few hours of thermal comfort during the year, especially on lower floors. To increase indoor air flow, the fixed upper windows were transformed into pivot windows and kept open permanently. This measure increases the annual hours of thermal comfort by 0.5-35%, depending on the floor and the adaptive comfort model. These findings suggest that natural ventilation itself may not be sufficient to ensure occupants' comfort throughout the year under the investigated context.
DOI: 10.6084/m9.figshare.14287295
title: What has driven the growth of Brazil´s residential electricity consumption during the last 19 years? An index decomposition analysis

description: Abstract Residential electricity consumption in Brazil has been growing during the last few decades, creating a potential opportunity to expand energy efficiency measures. However, the dimension of the sector and its closed relationship with the economic, cultural, and demographic processes causes a certain complexity in the understanding of patterns of consumption, creating additional challenges to energy policies. This study analyzed and decomposed the Brazilian residential electricity consumption between the years of 2000 and 2018, by driving factors through the LMDI-I method and IDA index, on regional level. All the data were obtained by official sources in the country. The main results obtained were: (i) the increase of household numbers was found to be one of the main drivers of consumption growth; (ii) household income showed no control over consumption in hot climate regions, except in low- income households; (iii) tariff showed to impose restrictions on consumption, also mainly in low-income households. Unprecedentedly, the results showed that the electricity consumption in Brazil varies with population age, with a trend of consumption growth up to the age 59, and a sharp reduction from the age of 60. The study presents opportunities to be contemplated in research and in energy policies.
DOI: 10.6084/m9.figshare.14287294
title: Evaluation of the performance of plumbing fixtures in public sports facilities in Brazil

description: Abstract The performance of plumbing systems is directly related to water and energy consumption. Malfunction of components in these systems can cause water waste and discomfort to users. In this research, the performance of 607 plumbing fixtures was investigated in five public buildings focused on sports activities in the city of Joinville, Southern Brazil. The flow rates and leaks in all installed plumbing fixtures were verified. The measured flow rate values were compared to those established by Brazilian standards and by environmental certifications LEED and AQUA. Flow rates of showers with water at 40°±2 °C were measured in summer and winter to compare the performance of showers in different seasons. The flow rates in showers displayed worse performance in winter than in summer. Also, 30.9% of taps showed some type of leak and 77.8% of toilets trickled. Of all plumbing fixtures, 71.7% presented some kind of defect. The results presented in this study indicate the main problems related to the performance of plumbing fixtures installed in public sports facilities in Joinville and can be useful in planning building preventive maintenance and water conservation actions.
DOI: 10.5281/zenodo.4633981
title: Data and R code for: The relationship between watershed protection and water quality: The case of Québec, Canada

description: This publication include the data and R code used to generate the figures and analyses found in the article titled "<strong>The relationship between watershed protection and water quality: The case of Québec, Canada", </strong>which is published in the journal <em>Freshwater Science</em> (2021).
DOI: 10.6084/m9.figshare.14287291
title: Aspects impacting on the energy performance of Brazilian social housing: a literature review

description: Abstract In the last ten years, the social housing sector in Brazil has been driven by the Programme “Minha Casa, Minha Vida” (“My House, My Life”). Although the Programme allowed the construction of a great number of dwellings throughout the country, field assessments have highlighted failures such as lack of climate suitability. Such an inadequacy can result in low levels of energy efficiency and the dissatisfaction of residents. Thus, the aim of this study is to review the national literature from the last ten years (from 2009 up to 2019) in order to determine the most impacting parameters for the energy efficiency of social housing. A synthesis of this information is necessary to consolidate the knowledge produced so far and to facilitate progress in this area. This study is expected to help future decisions by different stakeholders: researchers can define future goals by considering what has already been done, designers can apply user-centric design and energy efficiency criteria in practice, and policy makers can link the approval of social housing designs to energy efficiency parameters.
DOI: 10.5281/zenodo.4633980
title: Data and R code for: The relationship between watershed protection and water quality: The case of Québec, Canada

description: This publication include the data and R code used to generate the figures and analyses found in the article titled "<strong>The relationship between watershed protection and water quality: The case of Québec, Canada", </strong>which is published in the journal <em>Freshwater Science</em> (2021).
DOI: 10.6084/m9.figshare.14287288
title: Field experiments with a roof pond and radiant cooling panels in a test building

description: Abstract Among the components of a passive building, the roof is particularly important for the regulation of internal thermal conditions. Among the passive cooling systems that act from the roof, we can mention the roof pond (RP). In turn, radiant panels that use water as fluid can achieve high energy efficiency, enhancing the performance of the cold supply source. However, studies on the joint application of these technologies are lacking. This research study aimed to evaluate the thermal performances of different RP configurations, with and without radiant panels, applied to a test building during the summer. The experiment took place at the Sde Boqer Campus, Ben-Gurion University of Negev, Israel. The test environment with a conventional local roof was used as a parameter for comparison. The thermal performance was evaluated using Standard 55 and EN 15251, stabilisation of internal temperatures, and cooling. Compared to the conventional roof, the RP presented good results in terms of the moderation of the thermal conditions of the test building, especially when considering the European standard EN 15251.
DOI: 10.6084/m9.figshare.14287286
title: Comparative analysis of acoustic insulation in different building geometries: field tests and computer simulations

description: Abstract Currently in Brazil, residential buildings must be comply with basic acoustic insulation conditions, and in order to do that, the acoustic characteristics of the building system must be well known. For the design conditions, acoustic insulation data from laboratory tested systems are used as input values in computer simulations, thus estimating the results that can be obtained in field tests. This paper presents the results of air noise and standardised impact of different building systems tested in the same building, focusing on the comparative analysis of different areas and geometries and the estimation obtained from an acoustic prediction software. The tests were performed in residential buildings according to the technical standards ISO 16283-1 and ISO 16283-2 and estimated using the SONarchitect software. An analysis of measurement uncertainty from a historical data series was performed to verify whether geometry influences expanded uncertainty. It was verified that part of the air noise tests presented simulated results with smaller values than those found through the test, and measurement uncertainty tended to a higher value as the room volume increased. For the impact noise transmission tests, the estimated values were very close to the test results, however, it was not possible to relate the measurement uncertainty to the tested room volume.
DOI: 10.6084/m9.figshare.14287283
title: Thermal perception in a room with radiant cooling panels coupled to a roof pond

description: Abstract Roof ponds (RP) can promote comfortable thermal conditions, particularly in single-storey buildings. They allow structural cooling or heating and the stabilisation of surface and air temperatures. When coupled to radiant panels cooled by the exposed pond, they can further improve their thermal performance. However, there is a lack of research on RP focusing on the thermal perception of users indoors. The main objective of this study was to verify, empirically, under summer conditions, the thermal perceptions of volunteer participants in an indoor environment conditioned by a system composed of radiant panels coupled to a RP. We also sought to identify which adaptive model best represents the thermal votes reported by the study participants. As parameters for analysis of reported thermal votes, the PMV model and the passive building model of ASHRAE Standard 55 and EN-15251 were employed. The experiment took place in a test building at Ben-Gurion University of Negev, Israel. The sample consisted of 46 volunteer participants. The RP environment was perceived as comfortable by most volunteers. The thermal votes showed more agreement with the PMV and EN 15251 models than with the ASHRAE model.
DOI: 10.6084/m9.figshare.14287280
title: Guidelines for control of documented information generated by the implementation of NBR 15575: residential buildings: performance in construction companies

description: Abstract This paper presents the results of a research study aimed at proposing general guidelines for documented information control. That information is generated in the implementation process of Brazilian standard NBR 15575 in construction companies. The control is necessary to comply with the requirement 7.5 Documented information, of the Brazilian Habitat Quality and Productivity Program (PBQP-H) Regiment. The methodology adopted involved: 1) a bibliographic review on the themes "performance"; NBR 15575 and PBQP-H; 2) a case study was carried out in two companies, to identify which documents were being generated and how they were being controlled. The results pointed out several difficulties faced by companies, such as the existence of checklists that did not fulfill their role; different types of archived test reports; absence of definition of rules for control and distribution of information, among others. Based on these findings, guidelines are suggested to be followed in order to reduce these difficulties. A checklist with suggested deadlines for retaining records based on the Project Lifetime (VUP) of NBR 15575 is also proposed.
DOI: 10.6084/m9.figshare.14287277
title: Monitoring and modelling the operation of internal shading devices in offices: a literature review

description: Abstract The influence of user behaviour on the performance of buildings has been discussed in the literature. Regarding the operation of non-automated internal blinds/shades in offices, it is up to the occupant to balance the use of daylight as well as the reduction of incident solar radiation by adjusting the internal blinds/shades throughout the occupied period. This study aims to review the national and international literature of the last ten years (from 2009 up to 2019) to summarise the knowledge produced so far regarding the monitoring and modelling of internal blinds/shades operation in offices. Several suitable methods have been identified to monitor users' behaviour; such methods result in both subjective (personal preferences) and objective (affecting environmental variables) information. The challenge in this area is to combine different information to model user behaviour realistically and accurately. It was concluded that advances in the monitoring and modelling of behaviours improve the practices of computer simulation and the development of user-centred building automation systems. Finally, it is noteworthy that continuously monitoring user behaviour patterns allows to obtain feedback on automated systems in order to enhance them during their lifespan.