This paper presents an innovative solution for the auto healing concrete structures damaged by cyclic freeze-thaw. The additional hydration of high strength concrete, cured in high temperature, applied as auto curing for the damaged concrete micro-pore structures. Modeling of micro pore structure is prior to damage analysis. The micro-pore structure is composed as gel-pore and capillary pores, which grows with hydration. The amount of ice volume with temperature dependent surface tensions, freezing pressure and resulting deformations, and cycle and temperature dependent pore volume has been calculated and compared with available test results. The damaged and hydrated micro pore structures are modeled numerically. Heating the selected area of specimen in frozen chamber, the experimental results show approximately 100%of strength recovery after two weeks of freeze-thaw tests, fluctuating from 4° to -6° Celsius.

1. FULLTEXT: Auto Healing of Early Aged Cracking of High Strength Concrete, damaged by Cyclic Freeze-Thaw, Microsoft Office Document, 4.1MB

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