CAREER: Mechanisms of Hydration Kinetics and Property Development in Activated Slag and Fly Ash Multiphase Sustainable Binder Systems

该学院早期职业发展(CALEAR)计划奖的目的是研究活性磨细高炉矿渣和飞灰的水化机理，以设计出性能更好的粘结剂系统。利用不同的表征技术可以确定矿渣和飞灰在碱性介质中的溶解机理、产物相的形核、生长和扩散以及各相水化的相互依赖关系。还将探索通过影响产物相成核的类型和速率来修正活化粘结剂的反应动力学的方法。考虑到活性粘结剂体系中水化的多相、多阶段性质，将建立基于成核和生长原理以及化学动力学的分析水化模型。该项目中的教育计划通过研究整合更广泛的课程开发，开发整合拟议研究的K-12推广计划，以及通过招收少数族裔学生的多样性倡议，与研究部分紧密结合。本研究旨在了解矿渣和飞灰激发体系反应动力学的基本机理，其结果将为替代性能更好、二氧化碳排放量更低、体现能更低的可持续建筑材料提供参考。这也是设计这种革命性混凝土的关键一步，以提高该领域的接受度。水化模型由于活化体系的多相/多阶段性质，考虑了复杂性的影响，将是一个新的发展。为土木工程专业的学生做好明天的准备？通过土木工程课程的拟议升级，S被设想为科技领军人物。

The objective of this Faculty Early Career Development (CAREER) Program award is to investigate the hydration mechanism of activated ground granulated blast furnace slag and fly ash for designing binder systems with improved performance. The mechanism of dissolution of slag and fly ash in alkaline medium, product phase nucleation, growth and diffusion, and interdependence of hydration of individual phases will be determined using different characterization techniques. Methods for modifying reaction kinetics of the activated binders, by influencing the type and rate of product phase nucleation will also be explored. Analytical hydration models based on nucleation and growth principles, and chemical kinetics will be developed for activated binders considering the multi-phase, multi-stage nature of hydration in these systems. The educational plan in this project is strongly integrated with research component through research integrated broader curriculum development, development of K-12 outreach program integrating proposed research, and diversity initiative through minority student recruitments. The research is to understand the fundamental mechanism of the reaction kinetics of slag and fly ash activated systems, and the results will promote alternative sustainable construction materials with better performance, lower CO2 foot print and lower embodied energy. It is also a crucial step toward engineering this revolutionary concrete for increased acceptance in the field. The hydration model, incorporating the effect of complexities due to multi-phase/multi-stage nature of the activated systems, will be a new development. Preparing civil engineering students as tomorrow?s technological leaders is envisioned through the proposed advancement in civil engineering curriculum.