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Set in stone? A perspective on the concrete sustainability challenge

机译:一成不变的?关于具体可持续性挑战的观点

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摘要

As the most abundant engineered material on Earth, concrete is essential to the physical infrastructure of all modern societies. There are no known materials that can replace concrete in terms of cost and availability. There are, however, environmental concerns, including the significant CO2 emissions associated with cement production, which create new incentives for university–industry collaboration to address concrete sustainability. Herein, we examine one aspect of this challenge—the translation of scientific understanding at the microscale into industrial innovation at the macroscale—by seeking improvements in cement-paste processing, performance, and sustainability through control of the mechanisms that govern microstructure development. Specifically, we consider modeling, simulation, and experimental advances in fracture, dissolution, precipitation, and hydration of cement paste precursors, as well as properties of the hardened cement paste within concrete. The aim of such studies is to optimize the chemical reactivity, mechanical performance, and other physical properties of cement paste to enable more sustainable processing routes for this ubiquitous material.
机译:作为地球上最丰富的工程材料,混凝土对于所有现代社会的物理基础设施都是必不可少的。就成本和可用性而言,没有已知的材料可以替代混凝土。但是,存在环境问题,包括与水泥生产相关的大量CO2排放,这为大学与行业合作解决具体的可持续性提供了新的动力。在本文中,我们通过控制微观结构发展的机制来寻求水泥浆加工,性能和可持续性方面的改进,从而研究了这一挑战的一个方面-将微观的​​科学理解转化为宏观的工业创新。具体来说,我们考虑在水泥浆前体的断裂,溶解,沉淀和水化以及混凝土中硬化水泥浆的性能方面的建模,模拟和实验进展。此类研究的目的是优化水泥浆的化学反应性,机械性能和其他物理性能,以使这种无处不在的材料具有更可持续的加工路线。

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