UM
Morphological effect of C-S-H gel on the elastic behaviour of early-age cement-based materials
Chen, Jun; Li, Zongjin; Jin, Xianyu
2017-06
Source PublicationMAGAZINE OF CONCRETE RESEARCH
ISSN0024-9831
Volume69Issue:12Pages:629-640
AbstractThe morphological effect of calcium silicate hydrates (C-S-H) on the elastic behaviour of early-age cement-based materials is studied based on a refined multi-scale elasticity prediction model. The model demonstrates that the growth morphology of low-density (LD) C-S-H has a significant effect on the solid percolation threshold and the elastic behaviour of early-age cement-based materials, especially in the cases of higher water-cement (w/c) ratios or lower hydration degrees. Using the refined model, the growth morphology of LD C-S-H is quantitatively determined and verified by comparing the predicted results with previous experimental data. It is revealed that LD C-S-H grows in a lengthened manner when w/c is above 0.40, and the aspect ratio of LD C-S-H varies according to the availability of free growth space. When the w/c ratio is at the level of 0.50, the realistic growth morphology of LD C-S-H is close to that of a prolate, with an aspect ratio of the order of 10. The elongated growth of LD C-S-H is the key factor enabling cement-based materials with high w/c to set and have a rapid development of elasticity within the first few hours.
Keywordcement cementitious materials modelling modulus of elasticity
DOI10.1680/jmacr.16.00467
URLView the original
Indexed BySCI
Language英语
WOS Research AreaConstruction & Building Technology ; Materials Science
WOS SubjectConstruction & Building Technology ; Materials Science, Multidisciplinary
WOS IDWOS:000401358000004
PublisherICE PUBLISHING
The Source to ArticleWOS
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Cited Times [WOS]:1   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity of Macau
Recommended Citation
GB/T 7714
Chen, Jun,Li, Zongjin,Jin, Xianyu. Morphological effect of C-S-H gel on the elastic behaviour of early-age cement-based materials[J]. MAGAZINE OF CONCRETE RESEARCH,2017,69(12):629-640.
APA Chen, Jun,Li, Zongjin,&Jin, Xianyu.(2017).Morphological effect of C-S-H gel on the elastic behaviour of early-age cement-based materials.MAGAZINE OF CONCRETE RESEARCH,69(12),629-640.
MLA Chen, Jun,et al."Morphological effect of C-S-H gel on the elastic behaviour of early-age cement-based materials".MAGAZINE OF CONCRETE RESEARCH 69.12(2017):629-640.
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