By Gilles Pijaudier-Cabot, Frederic Dufour
The e-book, ready in honor of the retirement of Professor J. Mazars, presents a large evaluate of continuum harm modeling utilized to cementitious materials.
It starts off from micro-nanoscale analyses, then follows directly to continuum methods and computational concerns. the ultimate a part of the booklet offers industry-based case studies.
The contents emphasize multiscale and matched ways towards the serviceability and the protection of concrete structures.Content:
Chapter 1 Bottom?Up: From Atoms to Concrete constructions (pages 1–18): Franz?Josef Ulm and Roland J?M Pellenq
Chapter 2 Poromechanics of Saturated Isotropic Nanoporous fabrics (pages 19–50): Romain Vermorel, Gilles Pijaudier?Cabot, Christelle Miqueu and Bruno Mendiboure
Chapter three Stress?based Non?local harm version (pages 51–88): Cedric Giry and Frederic Dufour
Chapter four Discretization of upper Order Gradient harm types utilizing Isogeometric Finite parts (pages 89–120): Clemens V Verhoosel, Michael A Scott, Michael J Borden, Thomas J.R Hughes and Rene de Borst
Chapter 6 Macro and Mesoscale types to foretell Concrete Failure and measurement results (pages 121–160): David Gregoire, Peter Grassl, Laura B Rojas?Solano and Gilles Pijaudier?Cabot
Chapter 6 Statistical features of Quasi?Brittle measurement impression and lifelong, with results for security and sturdiness of huge buildings (pages 161–182): Zdenek P Bazant, Jia?Liang Le and Qiang Yu
Chapter 7 Tertiary Creep: A Coupling among Creep and harm – program to the Case of Radioactive Waste Disposal (pages 183–202): J.M Torrenti, T de Larrard and F Benboudjema
Chapter eight learn of Damages and hazards relating to advanced business amenities (pages 203–220): Bruno Gerard, Bruno Capra, Gael Thillard and Christophe Baillis
Chapter nine Measuring Earthquake Damages to a excessive energy Concrete constitution (pages 221–250): Patrick Paultre, Benedikt Weber, Sebastien Mousseau and Jean Proulx
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Additional info for Damage Mechanics of Cementitious Materials and Structures
DAY 08a, DAY 08b] performed adsorption experiments and swelling measurements on several Australian bituminous coals. More speciﬁcally, they used digital cameras and a pressure cell equipped with sight windows to measure the swelling strain of a Bowen basin coal sample during sorption of carbon dioxide at T = 55 ◦ C and up to Pb = 15 MPa [DAY 08b]. In addition, they performed CO2 adsorption isotherms measurements on other Bowen basin coal samples at T = 53 ◦ C and up to Pb = 16 MPa with a gravimetric technique [DAY 08a].
Lines are visual guides Function F is always negative if function f monotonically decreases with Pb . The derivative of f with respect to Pb reads df d = (1 − nex /nt )−2 dPb dPb nex nt . 4a clearly show that the ratio nex /nt 44 Damage Mechanics of Cementitious Materials decreases with Pb . 57] that f is a monotonic decreasing function of Pb , and thus, F is negative. As a result, the interaction energy is negative as well, and we ﬁnd: ψf − ψb = ψint ≤ 0. 58] Therefore, because of ﬂuid–solid and ﬂuid–ﬂuid interactions in the nanopores, the interstitial ﬂuid cedes free energy to the skeleton in the form of mechanical work, which provokes the swelling phenomenon.
In order to provide the reader with some validation studies, we are going to focus on carbon dioxide and methane adsorption in coal. The ﬂuids considered are simple ﬂuids and a typical pore size distribution of coal is not that far from cement paste, with pore sizes in the nanometer range. This setting has the merit of providing a simple conﬁguration on which future models should at least perform well. 1. Comparison with data by Day et al. Day et al. [DAY 08a, DAY 08b] performed adsorption experiments and swelling measurements on several Australian bituminous coals.