CONCRETE MATERIALS AND MIX DESIGN FOR ASSURING DURABLE PAVEMENTS

Abstract

This article by Stephen W. Forster for the Federal Highway Administration explores materials-related factors influencing the durability of concrete pavements, focusing on mix design, the role of concrete in structural performance, environmental impacts, and the construction process. It revisits historical perspectives on concrete durability, emphasizing the importance of aggregate properties, cementitious components, and additives in achieving optimal mix designs. The paper also highlights the critical role of the water-to-cementitious material ratio in producing strong, low-permeability concrete. Structural design considerations for different pavement types and the impact of environmental factors on concrete performance are discussed. Construction practices are identified as crucial for realizing the designed pavement quality, emphasizing proper material selection, environmental considerations, and execution. The article concludes that comprehensive understanding and integration of materials selection, design, environmental, and construction factors are vital for durable, high-performance concrete pavements. (Abstract generated by AI tool ChatGPT 4)