Title of article :
Mass and momentum interface equilibrium by molecular modeling. Simulating AFM adhesion between (120) gypsum faces in a saturated solution and consequences on gypsum cohesion
Author/Authors :
Paul Jouanna، نويسنده , , Laurent Pèdesseau، نويسنده , , Gérard Pepe، نويسنده , , David Mainprice، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2008
Pages :
10
From page :
290
To page :
299
Abstract :
Properties of composite materials depend on interatomic phenomena occurring between binder crystals. Experimental information of Atomic Force Microscopy (A.F.M.) is of prime importance; however understanding is helped by molecular modeling. As underlined in Section 1, the present study is able to simulate crystal interfaces in presence of a solution within apertures less than 1 Nanometer at a full atomic scale. Section 2 presents the case study of a gypsum solution between (120) gypsum faces, with related boundary conditions and atomic interactions. Section 3 deals with the mass equilibrium of the solution within interfaces < 5 Å, using the original Semi Analytical Stochastic Perturbations (SASP) approach. This information becomes in Section 4 the key for explaining the peak of adhesion obtained in A.F.M. around an aperture of 3 Å and gives enlightenments on gypsum cohesion. In conclusion, this illustration shows the potentialities of full atomic modeling which could not be attained by any numerical approach at a mesoscopic scale.
Keywords :
microstructure , Bond strength , Micromechanics , sulfate , MODELING
Journal title :
CEMENT AND CONCRETE RESEARCH
Serial Year :
2008
Journal title :
CEMENT AND CONCRETE RESEARCH
Record number :
1216421
Link To Document :
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