Simulation of Chloride Migration in Compression-Induced Damage in Concrete

作者: M Kalimur Rahman , Walid A Al-Kutti , Mohammed A Shazali , Mohammed H Baluch , None

DOI: 10.1061/(ASCE)MT.1943-5533.0000458

关键词:

摘要: The ingress of chloride ions in a harsh environment leads to the corrosion reinforcing steel bars and reduction service life concrete structures. Prediction chloride-exposed structures is strongly dependent on diffusion coefficient, which turn influenced by several factors including materials environmental parameters, binding solid phase concrete, stresses caused external load acting structure. increased significantly damage associated with load-induced stress, which, if not taken into account, can lead erroneous prediction life. This paper investigates impact compressive stress-induced transport concrete. An experimental investigation involving non-steady-state migration test as per NT BUILD 492 was carried out unloaded specimens damaged under axial load. Numerical simulation rapid chloride-migration using multiphysics finite element software presented phenomenological model chloride-binding isotherm coupled Nernst-Planck equation used evaluate specimens.

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