| 1. |
- Charlier, R, et al.
(författare)
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Water Influence on Bearing Capacity and Pavement Performance : Field Observations
- 2009
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Ingår i: Water in Road Structures. - Dordrecht : Springer. - 9781402085611 ; , s. 175-192
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Bokkapitel (refereegranskat)abstract
- This chapter presents a mechanical behaviour study, i.e. the bearing capacity as a function of the moisture degree. The field point of view is expressed and the chapter summarises a number of observations on road behaviour, in relation to variations of moisture. First, the road structure is recalled with respect to the mechanical analysis point of view. Then some observations on field under temperate climate, humid, are given. In a second step, the specific case of frost and thawing are discussed.
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| 2. |
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| 3. |
- Laloui, L., et al.
(författare)
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Water Influence on Mechanical Behaviour of Pavements : Constitutive Modelling
- 2009
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Ingår i: Water in road structures. - Dordrecht : Springer. - 9781402085611 ; , s. 193-216
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Bokkapitel (refereegranskat)abstract
- This chapter deals with the effects of water on the mechanical behaviour of pavements. The analysis is based on constitutive considerations. Constitutive models devoted to both routine and advanced pavement analysis and design are introduced and both the resilient behaviour as well as the long term elasto-plastic approaches are presented. As soon as the approach considers the material as a two phase (solid matrix and a fluid), the introduction of the effective stress concept is required. In the last section an analysis is made on the extension of the constitutive models to the characterisation of partially saturated materials
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| 4. |
- Charlier, R, et al.
(författare)
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Modelling Coupled Mechanics, Moisture and Heat in Pavement Structures
- 2009
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Ingår i: Water in Road Structures. - Dordrecht : Springer. ; , s. 243-281
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Bokkapitel (refereegranskat)abstract
- Different physical problems have been analysed in the preceding {chapters}: they relate to water transfer, to heat transfer, to pollutant transfer and to mechanical equilibrium. All these problems are governed by differential equations and boundary conditions but analytical solutions are, in general, unobtainable because of the complex interaction of the various aspects which are always present in real-world situations. In such circumstances, numerical modelling can give a valuable alternative methodology for solving such highly coupled problems. The first part of this chapter is dedicated to a brief statement of the finite element method for highly coupled phenomena. In the second part, a number of numerical simulations are summarised as an illustration of what could be done with modern tools. The chapter shows that it is possible to achieve realistic results although, at present, some simplification is often required to do so.
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