scholarly journals Blockchain-Based Network Concept Model for Reliable and Accessible Fine Dust Management System at Construction Sites

2021 ◽  
Vol 11 (18) ◽  
pp. 8686
Author(s):  
Seungwon Cho ◽  
Muhammad Khan ◽  
Jaeho Pyeon ◽  
Chansik Park
Keyword(s):  
Network Architecture ◽  
Fine Dust ◽  
Fugitive Dust ◽  
Construction Sites ◽  
Concept Model ◽  
Open Platform ◽  
Dust Generation ◽  
Search Tool ◽  
Government Inspection ◽  
Dust Reduction

In total, 44.3% of particle matter 10 (PM10) is fugitive dust, and one of the main sources of fugitive dust generation in Korea is construction work (22%). Construction sites account for 84% of the total business places that have reported fugitive dust generation. Currently, the concentration of fine dust at construction sites is being remotely monitored by government inspection agencies through IoT sensors, but it is difficult to trust that appropriate fine dust reduction measures are being taken, because contractors can avoid taking these measures by submitting false reports or photos. In addition, since the fine dust monitoring system under government management is not an open platform and centralized system, residents near construction sites encounter difficulties in accessing information about fine dust. Therefore, in this study, we designed and constructed a blockchain network model to transparently and reliably provide network participants with the information associated with IoT data and fine dust reduction measures. To operate the blockchain network, we designed the chaincode, DApp, and network architecture. In addition, information on fine dust concentration and reduction measure photos were shared with the participants via the blockchain search tool (Hyperledger Explorer). The proposed blockchain network is expected to form a trust protocol among contractors, government inspection agencies, and citizens.

scholarly journals Analysis of the Factors Affecting Fine Dust Concentration Before and After COVID-19

2021 ◽  
Vol 21 (6) ◽  
pp. 395-402
Author(s):  
Woo-Chul Choi ◽  
Kyu-Soo Cheong
Keyword(s):  
Comparative Analysis ◽  
Wind Direction ◽  
Air Pollutants ◽  
Dominant Factor ◽  
Fine Dust ◽  
Factors Affecting ◽  
Before And After ◽  
Containment Policy ◽  
The Relationship ◽  
Dust Reduction

This study conducted a comparative analysis of the factors affecting the concentration of fine dust before and after COVID-19. Of these, the dominant factor was CO, and the influence between variables increased even after COVID-19. In the case of PM10, the influence of wind direction and wind speed variables decreased, which is thought to be due to the reduction of westerly-based foreign air pollutants following China’s containment policy. Comparative analysis by season showed that the influence of temperature and humidity was higher in winter. In spring, the influence of wind direction and speed decreased with changes in the westerly wind and the influence of China’s containment policy. In summer and autumn, when the concentration of fine dust is relatively low, the influence of CO after COVID-19 was rather high, indicating that continuous CO management is necessary. Considering the relationship between these air pollutants and the meteorological environment, it is judged that fine dust reduction measures should be implemented.

scholarly journals Estimation of Fugitive Dust Levels on A Construction Site Using Digital Image Information

2018 ◽  
Vol 7 (3.9) ◽  
pp. 75
Author(s):  
Im . ◽  
Sun Young ◽  
Yu . ◽  
Jung Ho
Keyword(s):  
Digital Image ◽  
Construction Site ◽  
Fugitive Dust ◽  
Construction Sites ◽  
Image Information ◽  
Efficient Management ◽  
The Future

Currently, fugitive dust management on construction sites does not focus on prevention but rather seeks ways to control it after occurrence. In order to effectively manage fugitive dust on a construction site, it is necessary to quantify prevent fugitive dust from occurring, and take immediate measures after occurrence. Therefore, this study proposes a technique to estimate the amount of fugitive dust generated on a construction site using digital image information. Based on the results of this study, it is expected that high levels of fugitive dust on construction sites can be prevented in the future and efficient management will be possible. 

scholarly journals Calculation Methods of Emission Factors and Emissions of Fugitive Particulate Matter in South Korean Construction Sites

2020 ◽  
Vol 12 (23) ◽  
pp. 9802
Author(s):  
Hyunsik Kim ◽  
Sungho Tae ◽  
Jihwan Yang
Keyword(s):  
Particulate Matter ◽  
South Korea ◽  
The United States ◽  
Emission Factors ◽  
Construction Workers ◽  
Construction Site ◽  
Fugitive Dust ◽  
Construction Sites ◽  
South Korean ◽  
Pm10 And Pm2.5

Recently, efforts to effectively reduce particulate matter by identifying its sources and trends have become necessary due to the sustained damage it has caused in East Asia. In the case of South Korea, damage due to fugitive dust generated at construction sites in densely populated downtown areas is significant, and particulate matter in such fugitive dust directly influences the health of nearby residents and construction workers. Accordingly, the purpose of the present study was to develop a method for calculating emission factors for PM10 and PM2.5 emission amounts in the fugitive dust generated in construction sites and to derive emission amount trends for major variables to predict the amounts of generated particulate matter. To this end, South Korean emission factors for PM10 and PM2.5 for different construction equipment and activities that generate fugitive dust were derived and a method for calculating the amount of particulate matter using the derived emission factors was proposed. In addition, the calculated total emissions using these factors were compared to those calculated using construction site fugitive dust equations developed for the United States, Europe, and South Korea, and the trend analysis of total emissions according to the major emission factor variables was conducted.

scholarly journals Effect of PVA/PVAc Based Polymer Coating on Dust Reduction in Playground

2021 ◽  
Vol 11 (7) ◽  
pp. 3144
Author(s):  
In Kyu Jeon ◽  
Abdul Qudoos ◽  
Hyunseok Lee ◽  
Hong Gi Kim
Keyword(s):  
Polymer Coating ◽  
Soil Samples ◽  
Dust Exposure ◽  
Wind Effect ◽  
Specific Density ◽  
Coating Solution ◽  
Soil Particles ◽  
Permeability Characteristics ◽  
Dust Generation ◽  
Dust Reduction

Dust exposure is a serious threat to human health due to dermal contact, inhalation, and ingestion. Children are more vulnerable to dust than adults as a result of high rates of unintentional, or deliberate, ingestion and inhalation of dust. In this study, dust reduction in the playground due to coating of the soil particles with a PVA/PVAc-based solution was investigated. Soil particles were coated with varying amounts of coating solution and the samples were examined for various parameters e.g., specific density, moisture content, liquid and plastic limits, permeability, dust generation due to wind effect and human activity. The results demonstrated that coated soil samples showed improved permeability characteristics and reduced dust generation. These characteristics were improved by increased content of coating solution.

Sign in / Sign up

Export Citation Format

Share Document