Field Experience and Structural Performance of Self-Consolidating Concrete in High-Rise and Bridge Construction-Performance of Self-Consolidating Concrete Developed for Iconic and High-Rise Structures in North America (PDF)

Performance of Self-Consolidating Concrete Developed for Iconic and High-Rise Structures in North America (PDF)

Pdf Summary

The document discusses the performance and challenges of Self-Consolidating Concrete (SCC) used in iconic and high-rise structures in North America. It outlines the specific high-performance requirements needed for these structures, such as high workability, resistance to segregation, high strength, and low heat of hydration, which are crucial for sustainable construction. <br /><br />The paper highlights the use of High-Performance SCC (HP-SCC), noting its success due to its properties like high flowability, excellent passing ability, and satisfactory pumpability — critical for the dense reinforcement typical of iconic structures.<br /><br />A holistic mixture optimization approach is introduced, which involves considering macro- and micro-scale theories, structural design specifications, and production and construction conditions. Concrete is treated as a composite material consisting of a solid and fluid phase, ensuring excellent flow and segregation resistance.<br /><br />The document further presents case studies of several high-profile projects, including the Trump International Hotel and Tower and the New World Trade Center, New York City. These projects exemplify the successful application of SCC with specific performance achievements such as compressive strengths exceeding the requirements, efficient pumpability to high elevations, and maintaining low heat during use. <br /><br />The performance summaries detail the carefully crafted SCC mix designs tailored to meet stringent demands, showcasing adaptability in building some of the tallest structures. <br /><br />Overall, the paper concludes that achieving the superior performance required for SCC in iconic structures demands careful raw materials selection, iterative mix optimization, and close collaboration among stakeholders. The success is attributed to rigorous planning, comprehensive lab and field trials, and effective onsite execution, reflecting SCC's crucial role in modern high-rise construction.

Keywords

Self-Consolidating Concrete

high-rise structures

high-performance requirements

sustainable construction

High-Performance SCC

mixture optimization

composite material

case studies

compressive strengths

stakeholder collaboration