Understanding early age low carbon cement hydration acceleration by in situ nanotomography
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https://doi.esrf.fr/10.15151/ESRF-ES-2166884665
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资源简介：
We propose to study the hydration acceleration in two cements (Portland and a low carbon one) by holo-nanotomography (holo-nCT). The hydration will be studied in situ, between 3 and 24 h by taking four tomograms, with a total time per final dataset of 30 minutes (for the four distances). Three commercial accelerators will be used, CaCl2, C-S-H gel nucleation seeds and triisopropanolamine. holo-nCT will allow the quantitative analysis of thick capillaries, diameter=200 microns. A spatial resolution better than 150 nm is needed to study the features of Calcium Silicate Hydrate (C-S-H) gel shell development. The key outputs are (i) mass densities of the C-S-H gel shell which surrounds the alite particles, (ii) thickness of the C-S-H gel shell as function of the accelerator, and (iii) alite dissolution rates as a function of the (initial) particle sizes. The overall goal is to mechanistically understand the cement hydration to contribute to the design of chemical products (admixtures).
提供机构：
University of Malaga, Inorganic Chemistry, Boulevar Louis Pasteur, 25, 29010, Malaga, SPAIN; University of Malaga, Department of Civil and Materials Engineering, Escuela de Ingenierias, Universidad de Malaga C/Doctor Ortiz Ramos s/n Ampliacion Campus Teatinos, 29071, Malaga, SPAIN; Universidad de Malaga, Departamento de Quimica Inorganica, c/Teatinos s/n Aptdo 59, 29071 Malaga, Spain; University of Malaga, Inorganic Chemistry, Boulevard Louis Pasteur s/n Campus Universit Málaga, 29071, Malaga, SPAIN; Universidad de Malaga, Departamento de Quimica Inorganica, c/Teatinos s/n Aptdo 59, 29071, Malaga, SPAIN
创建时间：
2028-01-01
