Numerical modeling of drying shrinkage deformation of cement-based composites by coupling multiscale structure model with 3D lattice analyses

•A multiscale-structure-based model is proposed coupling with 3D lattice analyses.•Drying behaviors of C-S-H gels, cement paste and mortar are investigated.•Water desorption in capillary pores at 100%-to-85% RH range is incorporated.•Water desorption in gel pores at 85%-to-50% RH range is incorporat...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Computers & structures 2017-01, Vol.178, p.88-104
Hauptverfasser: Liu, Lin, Wang, Xuecheng, Chen, Huisu, Wan, Chaojun, Zhang, Mingzhong
Format: Artikel
Sprache:eng
Schlagworte:
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:•A multiscale-structure-based model is proposed coupling with 3D lattice analyses.•Drying behaviors of C-S-H gels, cement paste and mortar are investigated.•Water desorption in capillary pores at 100%-to-85% RH range is incorporated.•Water desorption in gel pores at 85%-to-50% RH range is incorporated. This paper presents a multiscale model for the drying shrinkage deformation of cement-based composites by incorporating its corresponding multiscale computer-generated structure at different scales in a three-dimensional lattice model. Assuming effects of capillary tension and disjoining pressure are the reason for the drying deformation, water desorption in capillary pores within 100%-to-85% RH range and that in gel pores within 85%-to-50% RH range are investigated. Drying behaviors of C-S-H gels, cement paste and mortar are studied by gradual upscaling. Experimental results for cement paste and mortar are utilized for validation. Parameter-determination and parameter-passing associated with the multiscale model are discussed.
ISSN:0045-7949
1879-2243
DOI:10.1016/j.compstruc.2016.10.005