EAGER: Engineering of Ultra-High Performance Cement Based Materials Using Superhydrophobic Hybridization

“该奖项是根据2009年美国复苏和再投资法案（公法111-5）资助的。“EAGER项目的目标是验证一个全新的、未经测试的概念：混凝土的超疏水杂交。这一概念通过结合仿生学、化学和纳米技术，采用新的跨学科视角，生产新一代混凝土，解决与混凝土行为相关的基本问题，如耐久性和耐腐蚀性。 该项目的目标是1。评估以下因素的影响：基于双烷的外加剂、高效减水剂和矿物添加剂/辅助胶凝材料（SCM）。2.实现混凝土孔隙空间的超疏水杂交的概念，能够提供受控的空隙结构。3.获得混凝土水化和微观结构发展的基本理解与基于戊烷的外加剂和高效减水剂，新型超疏水外加剂，矿物添加剂/SCM。4.评估含有超疏水外加剂的水泥基材料的强度和耐久性，这对于设计超高性能混凝土（UHPC）以满足性能标准非常重要。这项初步研究将作为开发新型水泥基材料的平台，包括那些具有超高耐久性和增加矿物添加剂用量的材料，如超高性能混凝土（UHPC）和自修复材料。此外，水泥行业目前占全球二氧化碳排放量的5%;因此，使用更高量的矿物添加剂制成的混凝土也将以更低的成本提供更环保的解决方案。

"This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5)."The objective of the EAGER project is to validate a completely new and untested concept: the superhydrophobic hybridization of concrete. This concept engages novel interdisciplinary perspectives by combining biomimetics, chemistry, and nanotechnology to produce a new generation of concrete that resolves the fundamental problems related to concrete behavior, such as durability and corrosion resistance. The objectives of the project are to 1. Evaluate the effect of: siloxane-based admixtures, superplasticizer, and mineral additives/ supplementary cementitious materials (SCMs). 2. Realize the concept of superhydrophobic hybridization of concrete pore space capable of providing a controlled air-void structure. 3. Obtain a basic understanding of concrete hydration and microstructure development with siloxanebased admixtures and superplasticizer, novel superhydrophobic admixtures, and mineral additives/SCMs. 4. Evaluate the strength and durability of cement based materials with superhydrophobic admixtures, which are important for designing UHPC to meet the performance criteria.This preliminary investigation will serve as a platform for the development of new types of cement-based materials, including those with ultra-high durability and increased volumes of mineral additives such as Ultra-High Performance Concrete (UHPC), and self-healing materials. Furthermore, the cement industry currently contributes up to 5% of global CO2 emissions; thus, the application of concrete made with higher volumes of mineral additives also will provide greener solutions at lower costs.