Nanopore in C-S-H Gel Stability Analysis of Hardened Cement Pastes

Lang Wu; Na Xiong; Fang Yan Yu

doi:10.4028/www.scientific.net/KEM.645-646.335

Paper Titles

A Novel High Precision Analytic Potential Function for Diatomic Molecules
p.313

The Simulation and Analysis of Current Crowding and Joule Heat in Flip Chip Solder Bumps
p.319

Effects of n-Type Dopants on Electronic Properties in 4H-SiC
p.325

Fabrication of Ultrasmooth Polymer Films by Concentration Control and Spin Speed Adjustment
p.330

Nanopore in C-S-H Gel Stability Analysis of Hardened Cement Pastes
p.335

Simulation and Typical Application of Multi-Step Diffusion Method for MEMS Device Layers
p.341

Synthesis of Nano-Al with Fe₂O₃ Nanowires to Realize Core-Shell Composite Materials Arrays Based on Colloidal Templates
p.347

Evaluation of the Stability on the New Alkaline Copper Bulk Slurry
p.352

Research on Low Temperature Anodic Bonding Based on Interface Pretreatment of Dielectric Barrier Discharge Plasma
p.356

HomeKey Engineering MaterialsKey Engineering Materials Vols. 645-646Nanopore in C-S-H Gel Stability Analysis of...

Nanopore in C-S-H Gel Stability Analysis of Hardened Cement Pastes

Abstract:

Based on capillary tension, surface free energy and elasticity theory, a collapse model of nanopore in C-S-H gel was created in hardened cement pastes. The stability of pore was analyzed by Gibbs free energy theory. The results show that, the capillary is more stable while the capillary is grater and rounder in the case of the aperture changing in the nanometer scope. When the aperture is changing in the scope of micrometer, the collapse possibility of the capillary is tiny. If the capillary size is fixed, the capillary is more stable while the elastic modulus of hydrated products is higher.

You might also be interested in these eBooks

View Preview

Info:

Periodical:

Key Engineering Materials (Volumes 645-646)

Pages:

335-340

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.645-646.335

Citation:

Cite this paper

Online since:

May 2015

Authors:

Lang Wu*, Na Xiong, Fang Yan Yu

Keywords:

Capillary Pore, Cement Hydration, Stability Analysis

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

* - Corresponding Author

References

[1] Wu L, Song G Q, Lei B. Elastic modulus prediction of hardened cement paste[J]. Journal of Building Materials, 2011, 11(6): 819-823.

Google Scholar

[2] GAO P W, Lu X L, Yang C X, etal. Microstructure and pore structure of concrete mixed with superfine phosphorous slag and superplasticizer[J]. Construction and Building Materials, 2008, 22 (5): 837-840.

DOI: 10.1016/j.conbuildmat.2006.12.015

Google Scholar

[3] LURA P, JENSEN O. M, BREUGEL K.V. Autogenous shrinkage in high-performance cement paste: An evaluation of basic mechanisms[J]. Cement and Concrete Research, 2003, 33(2): 223-232.

DOI: 10.1016/s0008-8846(02)00890-6

Google Scholar

[4] IGARASHI S, KAWAMURA M, WATANABE A. Analysis of cement pastes and mortars by a combination of backscatter-based SEM image analysis and calculations based on the Powers model [J]. Cement and Concrete Composites 2004, 26(8) : 977-985.

DOI: 10.1016/j.cemconcomp.2004.02.031

Google Scholar

[5] ZHANG G F , WANG P M. Effects of Vinyl Redispersible Polymer on Cement Hydration Products[J]. Journal of building materials, 2010, 13(2): 143-149.

Google Scholar

[6] JENNINGS H. M, THOMAS J, GEVREBIV J. S, etal. A multi-technique investigation of the nanoporosity of cement paste [J]. Cement and Concrete Research, 2007, 37 (3) : 329-336.

DOI: 10.1016/j.cemconres.2006.03.021

Google Scholar

[7] PICHLER C, LACKNER R, MANG H.A. A multiscale micromechanics model for the autogenous- shrinkage deformation of early-age cement-based materials [J]. Engineering Fracture Mechanics, 2007, 74 (2) : 34-58.

DOI: 10.1016/j.engfracmech.2006.01.034

Google Scholar

[8] BERNARD O, ULM F. J, LEMARCHAND E. A multiscale micromechanics-hydration model for the early-age elastic properties of cement-based materials [J]. Cement and Concrete Research, 2003, 33 (9): 1293-1309.

DOI: 10.1016/s0008-8846(03)00039-5

Google Scholar