Abstract
It is observed that mature concrete exhibits time-dependent deformation under sustained load on exposure to adverse chemical environment. The mechanical behaviour of such reacting elastic solids like concrete can be explained by using Dissolution-Precipitation Mechanism according to which the creep is caused by the gradual transformation of stressed reactant solid phase/s into stress-free solute before reaction. Using this mechanism, constitutive equations for the reacting isotropic linear elastic solids under arbitrary state of stress have been proposed in this Part I of the paper. The various aspects of long-term mechanical response of stressed reacting hardened concrete like creep, recovery, relaxation, mobility, dissipation, divergence, etc., have been studied. A principle of superposition has also been derived. The mechanism proposed and theory constructed here have been evaluated and computational parametric study and practical relevance of the work done have been presented in Part II of the paper.
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Suter, M., Benipal, G.S. Time-dependent behaviour of reacting concrete I: Mechanism and theory. Mech Time-Depend Mater 10, 51–62 (2006). https://doi.org/10.1007/s11043-006-9008-z
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DOI: https://doi.org/10.1007/s11043-006-9008-z