NSF Young Investigator

NSF 青年研究员

• 批准号: 9257933
• 负责人: Leslie Struble
• 金额: $ 27.5万
• 依托单位: University of Illinois at Urbana-Champaign
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-12-01 至 2000-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9257933&HistoricalAwards=false
• 关键词: NSF; Young; Investigator

The research plan involves the rheological behavior of fresh cement paste and concrete. There are a number of challenging scientific issues in cement rheology. It is critical to understand the various dynamic microstructural processes, not only to understand flow behavior of cement paste, but also to predict and control flow of concrete. One dynamic process is hydration, through which concrete transforms from liquid to solid. Another is flocculation and the response of flocculated particles to shear. The long- range objective during the next five years is to develop a microstructure-based model to simulate the flow behavior of cement past and concrete. The effort will focus on developing a dynamic computer-based microstructural simulation of hydration, flocculation and flow behavior. The simulation will be based on physicochemical aspects of particle interactions, including those resulting from hydration reactions, an approach generally similar to non-equilibrium molecular dynamics, a recent approach for modeling flow behavior of suspensions.

研究计划涉及新拌水泥的流变行为 水泥和混凝土。 有许多具有挑战性的科学 水泥流变学的问题。 关键是要了解 各种动态微观结构过程，不仅要了解 水泥浆体的流动行为，而且要预测和控制流动 混凝土。 一个动态过程是水合作用， 混凝土从液体变成固体。 另一个是絮凝 以及絮凝颗粒对剪切的响应。 很长的- 未来五年的范围目标是开发 基于微观结构的水泥流动模型 过去和具体。 这项工作将侧重于发展一种动态的 基于计算机的水化微观结构模拟， 絮凝和流动行为。 模拟将基于 粒子相互作用的物理化学方面，包括那些 由水合反应产生，一种通常类似的方法 非平衡分子动力学，最近的方法， 模拟悬浮液的流动行为。