scholarly journals Waste Management at Construction Sites in the Municipality of Manaus, Amazonas, Brazil: Characterization of the Current Situation

2019 ◽  
Vol 14 (2) ◽  
pp. 326-335
Author(s):  
Maria do P. S. Lamêgo Oliveira ◽  
Evailton Arantes de Oliveira ◽  
Reginaldo da Rocha Freitas ◽  
Arlene M. Lamêgo da S. Campos ◽  
Ana Margarida Fonseca
Keyword(s):  
Environmental Management ◽  
Financial Incentives ◽  
Research Work ◽  
Current Situation ◽  
Amazon Region ◽  
Construction Sites ◽  
Construction Waste ◽  
Region Data ◽  
The City

This research aimed the characterization of the current production of construction waste in the city of Manaus, Amazonas, Brazil, and its impacts on the environment of the Amazon Region. The significance of this research work is to contribute to the improvement of the environmental management of waste in the construction sites of the city of Manaus, with the aim of preserving the Amazonian environment. This research also sought to characterize the existing problems in the environmental management of construction waste in four construction sites, with areas greater than 9,000 square meters. The methodology adopted was based on the application of an in situ survey in four construction sites in the city of Manaus, Amazonas, Brazil, administered by three companies representing the construction sector in the Amazon Region. Data were collected at the construction sites in question in the second half of 2018, regarding the types of construction waste produced, respective volumes, destination and associated costs. A comparison was made between constructed areas and volumes of waste produced, characterizing the current situation of construction waste production in the city of Manaus. After analysing the results obtained, it was concluded that due to the high associated costs, companies avoid recycling construction waste, and opt to discharge it in municipal or clandestine landfills, with significant environmental impacts. For this reason, a greater participation of the Public Administration is recommended regarding the adequate management of waste in construction sites, namely offering financial incentives for companies to promote the recycling and reuse of construction waste.

scholarly journals Characterization of secondary deposits of columbite-tantalite minerals found in the city of Rorainópolis (RR), Brazil

2020 ◽  
Vol 8 (4) ◽  
pp. 450-468
Author(s):  
Anna Caroline Andrade Pinto ◽  
Tiago Felipe Arruda Maia
Keyword(s):  
Scientific Community ◽  
Research Work ◽  
Geological Mapping ◽  
Mineral Deposits ◽  
X Ray Diffraction ◽  
X Ray ◽  
Source Areas ◽  
The City ◽  
Petrographic Description

Many of the studies about mineral deposits are bringing great information to the scientific community, providing, for example, general characteristics of these deposits, possible source areas and its used in some cases as prospective tools to help in geological mapping. In this way, this study aimed to characterize the alluvial secondary deposits of columbite-tantalite that were found near vicinal 12, about 50km north/northeast of Rorainópolis city, between the BR-174 and BR-210 roads, in the state of Roraima (Brazil), bases on 4 samples that were brought by a resident of the region. To fulfill these objectives, some chemical and mineralogical methods were performed, like: magnetic separation, X-ray diffraction, X-ray fluorescence and petrographic description. The deposits of the region end up being characterized by having a large amount of Fe and Ti (mostly), containing in some places also a large concentration of Niobium and Tantalum. Not all samples have columbite-tantalite, showing that their concentration in some areas of the deposit is quite low. There are samples with less than 1% Nb and Ta and also samples with more than 20% Nb and 6% Ta concentration. These minerals were poorly transported, being identified by the degree of roundness and granulometry of the samples. A weathering cap on some minerals could also be verified. This research work turned out to be relevant, as it provides new data that add to the knowledge of the mineral potential, which has not been fully explored yet.

scholarly journals Estudio de las fachadas de inmuebles protegidos del casco urbano de Cieza (Murcia) = Study of the facades of protected buildings in the urban area of Cieza (Murcia)

2018 ◽  
Vol 4 (1) ◽  
pp. 56
Author(s):  
Eloisa González Ponce ◽  
Nuria Rosa Roca ◽  
Silvia Spairani Berrio ◽  
Borja Perez Pardos
Keyword(s):  
Urban Area ◽  
General Condition ◽  
Research Work ◽  
The State ◽  
Architectural Heritage ◽  
Good General Condition ◽  
Sustainable Materials ◽  
The City

ResumenEl propósito principal de este trabajo de investigación se centra en el estudio del estado de conservación de las fachadas de 34 inmuebles pertenecientes al Catálogo de Bienes Inmuebles y Elementos Protegidos del Plan General del Ayuntamiento de Cieza (Murcia), concretamente de aquellos situados en el casco urbano, para aportar directrices que garanticen una intervención con materiales sostenibles coherente y respetuosa con el patrimonio arquitectónico de la ciudad. Evidentemente, un desarrollo correcto del estudio diagnóstico constructivo de las fachadas de inmuebles protegidos debe llevarse a cabo en 2 fases: la caracterización constructiva de la arquitectura de sus fachadas y el estudio de lesiones o estado actual que presentan las mismas. Tras analizar los 34 inmuebles se establece una metodología y un modelo sistemático para la documentación del grado de deterioro que presentan las fachadas de los inmuebles del Catálogo de la ciudad. Destacamos que los resultados de materiales propuestos en las fachadas dan unos niveles de deterioro “bajo” o “muy bajo” en el 70 % de los casos analizados, corroborándose el buen estado general de las mismas.AbstractThe main intention of this research work focus interest on the 34 building’s facade from the state of preservation belonging a Municipalities Heritage Catalogue of Cieza's Town (Murcia), it specifically those that located in the urban area from to comply with the guidelines established by sustainable materials coherent and respectful with the architectural heritage of the city. Evidently, a correct development of the diagnostic constructive study of the 34 building’s facade must be carried out in 2 phases: the constructive characterization of the architecture of his building’s facade and the study of the state of conservation or current condition that the same ones present. After analyzing 34 building’s facade methodology and a systematic model it establish for the documentation of a Municipalities Heritage Catalogue of Cieza's Town of the city. We emphasize that the results of proposed materials building’s facade give a few levels of low or very low deterioration in 70 % of the analyzed cases, there being corroborated the good general condition of the same ones.

scholarly journals Analysis and characterization of the Composition of construction waste in the city of Ribeirão Preto- SP

2021 ◽  
Vol 28 (4) ◽  
Author(s):  
Luiz Paulo da Silva ◽  
José da Costa Marques Neto
Keyword(s):  
Qualitative Research ◽  
Social Development ◽  
Urban Hospital ◽  
Construction Waste ◽  
Percentage Composition ◽  
Future Studies ◽  
Quantitative And Qualitative Research ◽  
The City ◽  
Do So

Abstract: With an accelerated economic and social development, the growing generation of solid waste produced by society, whether domestic, urban, hospital, industrial or construction, is highlighted. To do so, it is highlighted what to do and how to manage this problem, in order to reduce environmental impacts and take advantage of such waste. In this context, the present study aims to determine the composition of waste in the city of Ribeirão Preto-SP, through a quantitative and qualitative research, seeking to present the percentage composition of each material found in the city's buckets, through collection and weighing. With this, analyzing the composition of the buckets, the unit mass of 0.79 t / m3 was determined. The work also pointed out the main areas of clandestine discards in the city of Ribeirão Preto and organized in the form of an inventory. Therefore, the work seeks to identify the composition of construction waste and provide information and values to support future studies.

scholarly journals Analysis of generation and characterization of construction and demolition waste on construction sites in the city of Recife, Brazil

2018 ◽  
Vol 23 (3) ◽  
Author(s):  
Kalinny Patrícia Vaz Lafayette ◽  
Diogo Henrique Fernandes da Paz ◽  
Maria Júlia de Oliveira Holanda ◽  
Luiz Augusto Ramos de Castro Costa
Keyword(s):  
Construction And Demolition Waste ◽  
Construction Sites ◽  
Demolition Waste ◽  
The City

Waste Generation Indicators in Brazilian Construction Sites

2019 ◽  
Vol 45 (4) ◽  
pp. 419-427
Author(s):  
Diogo Henrique Fernandes da Paz ◽  
Kalinny Patrícia Vaz Lafayette ◽  
Maria do Carmo Sobral
Keyword(s):  
Inverse Relationship ◽  
Residential Buildings ◽  
Generation Rate ◽  
Waste Generation ◽  
Land Area ◽  
Construction Sites ◽  
Construction Waste ◽  
Construction Companies ◽  
The City ◽  
Excavation Area

The objective of this study is to perform a diagnosis of the Construction Waste (CW) generation at sites in the city of Recife, Brazil, and obtain indicators to improve waste management. This involved the collection of data through the establishment of partnerships with construction companies that build multifamily residential buildings in the region. To organize the information, a spreadsheet database was developed, containing the survey of the construction characteristics from each construction project, such as the phase, built area, total land area, demolition and excavation area, number of floors, execution time, among others. From this analysis, it was verified that the total CW generation increases as the built area increases. However, the generation rate has an inverse relationship, being higher for the projects with smaller built areas. It is therefore necessary to consider the size of the project in order to use the correct CW generation rate. The results obtained by the analysis of these 20 worksites indicate that new indicators of waste generation are required by construction phase and by size of the built area, in order to properly estimate how much CW was generated and the costs to manage it.

scholarly journals Promotion of Environmental Education through the management of solid waste from civil construction

2020 ◽  
Vol 15 (1) ◽  
pp. 131-149
Author(s):  
Daiane Cristine Kuhn ◽  
Mariana Ribeiro Santiago
Keyword(s):  
Environmental Education ◽  
Qualitative Analysis ◽  
Solid Waste ◽  
Construction Site ◽  
Construction Sites ◽  
Management Actions ◽  
New Construction ◽  
The City

The objective of the study is to propose environmental education through the management of solid waste from civil construction, in two construction sites, with characteristics of renovation and new construction, both located in the city of Itapiranga - SC. For that, a qualitative analysis and the characterization of the works and the waste generated were carried out, which comprised two periods - without awareness and with awareness. Management actions were adopted, such as minimization, segregation, packaging, transportation, reuse and correct disposal of waste. As a result, there is the organization of the construction site, segregation, packaging and reuse of the waste generated.

scholarly journals Research of dumps at construction sites in the urban area

2015 ◽  
Vol 2 ◽  
pp. 99
Author(s):  
Yu. Galitskova
Keyword(s):  
Urban Area ◽  
Building Materials ◽  
Construction Sites ◽  
Construction Waste ◽  
Waste Composition ◽  
Secondary Resource ◽  
The City

<p>The article deals with the problems of the construction waste formed in the course of demolition and construction of buildings in the city. The author presents results of investigations of construction sites located on the territory of Samara, gives the analysis of the construction waste composition and considers options for the use of the construction waste as a secondary resource in the manufacture of building materials.</p>

scholarly journals Application of Construction and Demolition Waste in Civil Construction in the Brazilian Amazon—Case Study of the City of Rio Branco

Materials ◽  
2021 ◽  
Vol 14 (9) ◽  
pp. 2247
Author(s):  
Fernando da Silva Souza ◽  
José Maria Franco de Carvalho ◽  
Gabriela Grotti Silveira ◽  
Vitória Cordeiro Araújo ◽  
Ricardo André Fiorotti Peixoto
Keyword(s):  
Mechanical Strength ◽  
Raw Materials ◽  
Amazon Region ◽  
Construction And Demolition Waste ◽  
Recycled Aggregates ◽  
Federal State ◽  
Construction Sites ◽  
Demolition Waste ◽  
Conventional Concrete ◽  
Initial Adhesion

The lack of usable aggregates for civil construction in Rio Branco (capital of Acre, a Federal State in the Amazon region) makes the production and use of recycled aggregates from construction and demolition waste (CDW) an alternative of great interest. In this study, a comprehensive characterization of CDW collected from 24 construction sites of six building types and three different construction phases (structures, masonry, and finishing) was carried out. The fine and coarse recycled aggregates were produced and evaluated in 10 different compositions. The aggregates’ performance was evaluated in four mixtures designed for laying and coating mortars with a total replacement of conventional aggregates and a mixture designed for a C25 concrete with 50% and 100% replacement of conventional aggregates. CDW mortars showed lower densities and greater water retention, initial adhesion, and mechanical strength than conventional mortars. CDW concretes presented lower densities and greater resistance to chloride penetration than conventional concrete, with a small mechanical strength reduction. The recycled CDW aggregates proved to be technologically feasible for safe application in mortars and concrete; for this reason, it is believed that the alternative and proposed methodology is of great interest to the Amazonian construction industry, considering the high costs of raw materials and the need for defining and consolidating a sustainable development model for the Amazon region.

scholarly journals Genomic investigation of a dengue virus outbreak in Thiès, Senegal, in 2018

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Amy Gaye ◽  
Tolla Ndiaye ◽  
Mouhamad Sy ◽  
Awa B. Deme ◽  
Alphonse B. Thiaw ◽  
...  
Keyword(s):  
West Africa ◽  
Dengue Virus ◽  
Clinical Signs ◽  
Health Concern ◽  
Public Health Concern ◽  
Local Circulation ◽  
Viral Genomes ◽  
Genomic Characterization ◽  
The City

AbstractDengue virus is a major and rapidly growing public health concern in tropic and subtropic regions across the globe. In late 2018, Senegal experienced its largest dengue virus outbreak to date, covering several regions. However, little is known about the genetic diversity of dengue virus (DENV) in Senegal. Here we report complete viral genomes from 17 previously undetected DENV cases from the city of Thiès. In total we identified 19 cases of DENV in a cohort of 198 individuals with fever collected in October and November 2018. We detected 3 co-circulating serotypes; DENV 3 was the most frequent accounting for 11/17 sequences (65%), 4 (23%) were DENV2 and 2 (12%) were DENV1. Sequences were most similar to recent sequences from West Africa, suggesting ongoing local circulation of viral populations; however, detailed inference is limited by the scarcity of available genomic data. We did not find clear associations with reported clinical signs or symptoms, highlighting the importance of testing for diagnosing febrile diseases. Overall, these findings expand the known range of DENV in Senegal, and underscore the need for better genomic characterization of DENV in West Africa.

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