Abstract

Foamed cement paste has been increasingly used as backfilling material in practice. The unique porous structure characteristic significantly influences the mechanical properties of foamed cement paste. This study conducted a series of laboratory tests to investigate the mechanical properties of nano-silica modified foamed cement paste. Foamed cement paste specimens with densities of 0.6 g/cm3 1.1 g/cm3 1.5 g/cm3 were prepared, incorporating nano-silica in varying concentrations from 1 g/L to 5 g/L. The density test and uniaxial compression test were conducted. The results show that the nano-silica improved the density inhomogeneity of the foamed cement paste and increased the peak strength. The optimal nano-silica content was 3 g/L in this study. This study offers a practical approach for enhancing the performance of foamed cement paste in engineering applications.

Details

Title
Mechanical properties of nano-modified foamed cement paste
Author
Zhang, Z 1 ; Gao, R F 1 ; Wang, M Y 1 ; Ye, G B 1 ; Liu, S M 1 

 Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, and Department of Geotechnical Engineering, Tongji University , Shanghai , China 
First page
012009
Publication year
2024
Publication date
May 2024
Publisher
IOP Publishing
ISSN
17551307
e-ISSN
17551315
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
3058785879
Copyright
Published under licence by IOP Publishing Ltd. This work is published under http://creativecommons.org/licenses/by/3.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.