β Scribed by S. Chatterji
No coin nor oath required. For personal study only.
In this paper the authors tried to analyze their drying shrinkage data in terms of the Munich model. They have attributed the shrinkage below 40% RH to a change in the surface free energy (socalled Bangham shrinkage) and the shrinkage above 40% RH to the disjoining pressure. As the authors are proposing the "real mechanisms" of drying shrinkage it may be Worthwhile to study their data little critically.
π SIMILAR VOLUMES
After having studied phenomena linked to hydration and self-desiccation, one notes that capillary depression is the main origin of the autogenous shrinkage of hardening cement paste. Based on this mechanism, modelling at macroscopic scale is undertaken for a commonly used cement paste (CPA 55) with
An improved method for the evaluation of sorption data is outlined. This \*thermo-dynamic approach" takes the change of surface tension of adsorbed liquid films into consideration. No assumption on the pore shape has to be introduced. In addition to the pore size distribution changes of the surface
We thank J. Baron and M. Buil for their reference to our work and for the interesting comparison they have made with their experimental results.
This paper is the first of a series of three. For Portland cement pastes, it presents a model of the micro-structure and the associated compressive strength law which will be the base of the two following papers. Model and strength law involve that the most important parameter influencing the stren
This paper is the last one of a series of three 1)(2). It proves that the difference in the evolution laws of the compressive strength R r and of the elastic modulus E is just apparent. Indeed, on the one h~nd the micro-structure model developed regarding R evolution allows tc account for E evolutio