International Research Award on Civil and Environmental Engineering

Introduction The incorporation of steel slag in asphalt mixtures has gained significant attention due to its potential to improve road performance and promote sustainable pavement solutions. This research focuses on evaluating the effect of steel slag coarse aggregate (SSCA) as a partial or complete replacement for natural aggregates, investigating its influence on road performance and determining optimal blending ratios for improved durability and cost-effectiveness. Influence of Steel Slag Content and Gradation The content and gradation of steel slag play a crucial role in determining the mechanical and structural performance of asphalt mixtures. The study analyzed the substitution of natural aggregates with SSCA in varying proportions (0%, 25%, 50%, 75%, and 100%), aiming to understand its impact on mixture stability, strength, and durability. Proper gradation ensures better aggregate interlocking, leading to improved load-bearing capacity and long-term road performance. Experim...

  Introduction The reliability and durability of steel pipeline infrastructure are increasingly threatened by complex degradation mechanisms. As these systems operate under demanding conditions, understanding the root causes of material deterioration becomes crucial for safety and performance. This study investigates the primary factors leading to pipeline failures, focusing on selective corrosion and erosion. By integrating macroscopic analysis, corrosion testing, microscopic examination, tensile strength testing, and finite element method (FEM) modeling, the research aims to uncover the mechanisms behind structural weaknesses. The findings provide insights into both localized and system-wide damage, offering a foundation for developing preventive maintenance and design strategies. Selective Corrosion in Heat-Affected Zones Selective corrosion, particularly in the heat-affected zones (HAZs) of longitudinal welds, emerged as the primary degradation mechanism affecting steel pipe...