Journal article

Nano-CSH modified high volume fly ash concrete: Early-age properties and environmental impact analysis

Zhiyuan Zhou, Massoud Sofi, Junli Liu, Shengping Li, Aocheng Zhong, Priyan Mendis



To reduce the carbon footprint in concrete industry, fly ash (FA) as the solid waste has been widely used to replace cement in concrete material. Nano-CSH crystals is used in this research to improve the early age properties of concrete with high volume fly ash (HVFA). The characteristic analysis of the HVFA concrete incorporating nano-CSH crystals was first conducted including early age strength development and setting time. The changes in hydration and microstructure due to the adding of nano-CSH crystals were explored by the isothermal calorimetry, X-ray diffraction (XRD) and scanning electron microscopy (SEM) testings. The environmental impact of concrete mixes was assessed using CMLCA s..

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Awarded by Australian Research Council from Australian Government, Canberra, Australia

Funding Acknowledgements

The authors would like to acknowledge the financial support from Melbourne Research Scholarship is from the University of Melbourne, Melbourne, Australia and the Australian Research Council's Discovery Early Career Researcher Grant is from Australian Government, Canberra, Australia (Award No. DE170100165, 2017). We also would like to thank Cement Australia for providing material including cement and FA for our experiment and lab technician Laura Jukes and Ray Furmston for their assistance with laboratory testings.