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Monday, December 17, 2012
1:30 PM - 2:30 PM
CNLS Conference Room (TA-3, Bldg 1690)

Postdoc Seminar

Nanoengineering Low-CO2 Geopolymer Cements and Carbonate-Based Materials

Claire White
LANSCE, T-1 and CNLS

With the ever-increasing demand to use clean and environmentally beneficial materials in our technologically progressing industries, the need for advanced molecular-based understanding of these materials together with a clear understanding of their life cycles is becoming more and more important. It has been shown that there is a direct correlation between the nature of the molecular structure of a material, its formation, and changes over time, with engineering properties such as strength and durability. However, the majority of research carried out to measure and understand these micro- and macroscopic properties is limited to these larger length scales, which fails to capture the true nanoscale mechanisms responsible in part for these properties. Here, I will address (i) the pressing need to understand and control the early age performance of low-CO2 geopolymer binders and concretes, and (ii) the anticipated role of different carbonate phases in CO2 sequestration and carbonation of alkali-activated cements. The results directly impact the concrete and CO2 sequestration industries, and greatly help the implementation of low-CO2 construction materials in the industrial sector.

Host: Claire White 667-1444