Development of High-Strength Light-Weight Cementitious Composites with Hollow Glass Microspheres
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2023
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Li, X.
Yao, Y.
Zhang, D.
Zhang, Z.
Zhuge, Y.
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Event/exhibition information: Nanotechnology in construction, including deep advances in cement chemistry, nanotechnology, artificial intelligence, robotics, concrete technology, and extreme engineering (blast, impact and fire), Melbourne, Australia, 31/10/2023-02/11/2023
Source details - Title: International conference on Variability of the Sun and sun-like stars: from asteroseismology to space weather NICOM 2022: Nanotechnology in Construction for Circular Economy, 2023, vol.356 LNCE, pp.241-249
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Achieving both light-weight and high-strength cementitious composites (HSLWCCs) is challenging. In this study, hollow glass microspheres (HGMs) were used to develop a HSLWCC. Different amounts of HGMs were incorporated in the cement mixture and the associated effects on the engineering properties and microstructure were investigated. The results showed that the density and strength decreased with increasing HGM content. Compressive strength of the HSLWCC decreased significantly when the HGM content increased from 30 to 40% and decreased slightly with further increasing HGM content, while the density generally reduced linearly with increasing HGM content. Structural efficiency of the HSLWCC increased when the HGM content was 30% and then decreased significantly at HGM content of 40%. In particular, a floatable cementitious composite with a density of ~970 kg/m3 and compressive strength of ~31 MPa was developed by incorporating 60% of HGMs. Additionally, two failure modes (i.e., (i) debonding of interface and (ii) crush of HGM) were found in the high-strength light-weight cementitious composite (HSLWCC), with the former dominating in HSLWCC with high HGM content and the later dominating in HSLWCC with low HGM content
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Copyright 2023 The author(s). This chapter is licensed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/)