Imperial College London
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ProfessorChrisCheeseman

Faculty of Engineering, Department of Civil and Environmental Engineering

Professor of Materials Resources Engineering
 
 
 
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Contact

 

c.cheeseman

 
 
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Location

 

242Skempton BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Huang:2024:10.1016/j.conbuildmat.2024.135244,
author = {Huang, Y and Bian, Z and Ji, W and Yio, M and Chen, Z and Lu, JX and Cheeseman, C and Poon, CS},
doi = {10.1016/j.conbuildmat.2024.135244},
journal = {Construction and Building Materials},
title = {Production of glass-ceramic aggregates from solid wastes for high-strength and low-shrinkage lightweight mortars},
url = {http://dx.doi.org/10.1016/j.conbuildmat.2024.135244},
volume = {416},
year = {2024}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - To alleviate the shortage of traditional aggregates and reduce energy consumption, glass-ceramic aggregates were produced from incinerated sewage sludge ash (ISSA) and waste glass powder (WGP) through low-temperature sintering at 800  without fluxing or nucleation agents. Thermodynamic calculations were employed to predict phase equilibria and quantification of aggregates. The density, porosity, compressive strength, and crystalline phases in the aggregates were investigated as a function of WGP content (0–80 wt% with an interval of 20 wt%). The resulting glass-ceramic aggregates exhibited compressive strength of 1.9–47.0 MPa, density of 1526–2379 kg/cm3, and open porosity of 44.5% to 9.8%. Further application of glass-ceramic aggregates in mortars was assessed compared to manufactured sand (Ref-M) and expanded clay aggregate (Ref-C), including shrinkage, thermal conductivity, alkali-silica reaction, and microstructural characteristics. Results indicated that glass-ceramic aggregates reduced the 12.4–26.6% oven-dry density, 45.0–64.0% thermal conductivity, and 68.8–538.2 με 7-d autogenous shrinkage of lightweight mortars compared to Ref-M. Moreover, 3.0–35.5% drying shrinkage reduction and 5.7–139.0% 28-d compressive strength increase were achieved compared to Ref-C. The lightweight mortars containing glass-ceramic aggregates did not show any alkali-silica reaction risks. The synthesis of glass-ceramic aggregates at low temperatures and their successful application in lightweight products provided new insights and viable outlet for solid wastes.
AU  - Huang,Y
AU  - Bian,Z
AU  - Ji,W
AU  - Yio,M
AU  - Chen,Z
AU  - Lu,JX
AU  - Cheeseman,C
AU  - Poon,CS
DO  - 10.1016/j.conbuildmat.2024.135244
PY  - 2024///
SN  - 0950-0618
TI  - Production of glass-ceramic aggregates from solid wastes for high-strength and low-shrinkage lightweight mortars
T2  - Construction and Building Materials
UR  - http://dx.doi.org/10.1016/j.conbuildmat.2024.135244
VL  - 416
ER  -
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