Simulation of drying shrinkage based on high-resolution 3D pore structure analysis of cement paste

Title: Simulation of drying shrinkage based on high-resolution 3D pore structure analysis of cement paste
Author(s): Beat Münch, Philippe Gasser, Lorenz Holzer
Paper category : conference
Book title: 2nd International RILEM Symposium on Advances in Concrete through Science and Engineering
Editor(s): J. Marchand, B. Bissonnette, R. Gagné, M. Jolin and F. Paradis
Print-ISBN: 2-35158-003-6
e-ISBN: 2351580028
Publisher: RILEM Publications SARL
Publication year: 2006
Nb references: 45
Language: English

Abstract: The process of drying shrinkage is one of the most prominent issues in concrete research. Yet, shrinkage estimation from true pore networks was not feasible for technical reasons. With the new method of FIB-nt, we overcome this deficit and present a new approach for the assessment of drying shrinkage. FIB-nt allows the acquisition of 3D samples from miscellaneous cement composites. Thereof, the pore structures can be extracted and the location of the liquid/vapor menisci within the pore structures determined at varying humidities. In addition to structure parameters which are useful for correlating laboratory tests, the FIB-nt method allows to apply physical models of drying shrinkage to real pore structures. Some first results are presented in this article.

Keywords: drying shrinkage, modelling, simulation, FIB, 3D

Online publication: 2006-08-02
Classification: 3.1 Theme 1: Numerical Models: from Microstructure to Transport Properties and Durability
Publication type : full_text
Public price (Euros): 0.00
doi: 10.1617/2351580028.036