Study of Water Resistance of Polyurethane Coatings Based on Microanalytical Methods DOI Open Access
Chao Xie,

Yufeng Shi,

Zhicheng Si

et al.

Polymers, Journal Year: 2024, Volume and Issue: 16(24), P. 3529 - 3529

Published: Dec. 18, 2024

This study investigates the effect of microstructural changes in polyurethane coatings on their water resistance properties. Polyurethane with varying diluent contents were prepared and tested for penetration mechanical property retention. The time-dependent behavior within at different immersion durations was analyzed using low-field nuclear magnetic resonance (NMR). Furthermore, free volume characteristic molecular groups each coating microscopic techniques, including positron annihilation lifetime spectroscopy (PALS) attenuated total reflectance Fourier-transform infrared (ATR−FTIR). Results indicate that content significantly alters microstructure coatings. With increasing content, both average pore fraction initially decrease then increase, while groups, hydrophilic gradually decline. performance influenced by combined effects groups. Among five formulations, 20% 25% showed a superior resistance, higher retention properties after immersion, relatively low bound all ages. entropy weight method equal used to assess overall following ranking scores: f20 > f25 f30 f15 f10. offers theoretical support guide design practical application real-world engineering projects.

Language: Английский

Analysis of Road Traffic Accidents in Dense Cities: Geotech Transport and ArcGIS DOI Creative Commons

Khaled Aati,

Moustafa Houda, Saleh Alotaibi

et al.

Transportation Engineering, Journal Year: 2024, Volume and Issue: 16, P. 100256 - 100256

Published: June 1, 2024

Road Traffic Accidents (RTAs) provide a substantial risk to both public safety and infrastructure within severe earthquake zones. This research aims thorough analysis of the many elements that contribute RTAs in area. Although on has been conducted numerous settings, there is lack localized specifically focused developing countries. Therefore, this study necessary address gap literature. Our focuses examining distinct issues are particular specific location. The objective customized solutions effectively reduce occurrence accidents. examine status RTAs, ascertain main factors contributing viable approaches improve road safety. A comprehensive data was undertaken, which included examination key highways, accident-prone areas, causes Insights were derived by use statistical analysis, hotspot mapping, categorization incidents. results revealed distressing roadway afflicted significant frequency accidents, even those occurring prominent thoroughfares. Excessive speed as primary factor, closely followed negligence recklessness. common factor seen these events insufficient enforcement traffic regulations. highlights several practical consequences. Firstly, it advised implement urgent actions such upgrading database, adoption contemporary management software, rigorous laws. establishment centralized database system crucial order enhance documenting Furthermore, cost-benefit provides justification for calming measures locations with high incidence implementation continuous awareness efforts clear legislative guidelines pertaining fatal accidents imperative promoting enhanced

Language: Английский

Citations

13
A framework for enhancing safety planning in oil and gas construction projects DOI Creative Commons

Abdullah Alsehaimi,

Ahsan Waqar, Dorin Radu

et al.

Ain Shams Engineering Journal, Journal Year: 2025, Volume and Issue: 16(2), P. 103257 - 103257

Published: Jan. 5, 2025

Language: Английский

Citations

1
Optimising Construction Sector Performance: A Study of the Rapidly Growing Global Drone Industry Using Smart PLS Approach DOI Creative Commons

Abdullah Alsehaimi,

Ahsan Waqar,

Ahmed abd El Aal

et al.

Journal of Engineering Research, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 1, 2024

Language: Английский

Citations

2
Internet of things (IoT) for safety and efficiency in construction building site operations DOI Creative Commons

Abdul Mateen Khan,

Khaled A Alrasheed,

Ahsan Waqar

et al.

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: Nov. 21, 2024

Abstract Internet of Things (IoT) technologies present transformative opportunities through connectivity intelligent devices, environmental sensors, and integrated management systems. This study aims to investigate the benefits impact IoT implementation on construction sites by analyzing relationships between key factors outcomes for safety efficiency. Hypotheses were developed proposing positive correlations each factor effective adoption sites. Structural equation modeling analysis survey data from professionals site reports strongly validated research hypotheses. Positive path coefficients high statistical significance confirmed monitoring (0.38), equipment (0.343), predictive analytics maintenance (0.222) (0.369) as crucial enablers successful integration leading safer more productive operations. The findings highlight imperative focus areas provide actionable insights stakeholders strategies effectively leverage capabilities.

Language: Английский

Citations

2
Building a sustainable future: BIM’s role in construction, logistics, and supply chain management DOI Creative Commons

Abdullah Alsehaimi,

Ahsan Waqar,

Khaled A Alrasheed

et al.

Ain Shams Engineering Journal, Journal Year: 2024, Volume and Issue: unknown, P. 103103 - 103103

Published: Oct. 1, 2024

Language: Английский

Citations

1
An Integrated Management System (IMS) Approach to Sustainable Construction Development and Management DOI Creative Commons
Ahsan Waqar,

Saad Nisar,

Mohd. Muddassir

et al.

Journal of Infrastructure Intelligence and Resilience, Journal Year: 2024, Volume and Issue: unknown, P. 100126 - 100126

Published: Oct. 1, 2024

Language: Английский

Citations

1
Study of Water Resistance of Polyurethane Coatings Based on Microanalytical Methods DOI Open Access
Chao Xie,

Yufeng Shi,

Zhicheng Si

et al.

Polymers, Journal Year: 2024, Volume and Issue: 16(24), P. 3529 - 3529

Published: Dec. 18, 2024

This study investigates the effect of microstructural changes in polyurethane coatings on their water resistance properties. Polyurethane with varying diluent contents were prepared and tested for penetration mechanical property retention. The time-dependent behavior within at different immersion durations was analyzed using low-field nuclear magnetic resonance (NMR). Furthermore, free volume characteristic molecular groups each coating microscopic techniques, including positron annihilation lifetime spectroscopy (PALS) attenuated total reflectance Fourier-transform infrared (ATR−FTIR). Results indicate that content significantly alters microstructure coatings. With increasing content, both average pore fraction initially decrease then increase, while groups, hydrophilic gradually decline. performance influenced by combined effects groups. Among five formulations, 20% 25% showed a superior resistance, higher retention properties after immersion, relatively low bound all ages. entropy weight method equal used to assess overall following ranking scores: f20 > f25 f30 f15 f10. offers theoretical support guide design practical application real-world engineering projects.

Language: Английский

Citations

0