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Efficiency of crack repair in Steel Fiber Reinforced Concrete (SFRC) was estimated on the base of the results obtained by wedge split test (WST) method. The main part of the paper pointed at the discussion of laboratory investigations into the thermal compatibility of the selected repair system, where cracks in the SFRC were sealed with low-viscosity epoxy adhesive. The obtained results show that ultimate split strength decreases with increasing into the number of freeze-thaw cycles, similar as adhesion between used epoxy adhesive and concrete surface. Because of bridged fibers of cracks have been reactivated by sealing those cracks with epoxy adhesive, toughness or energy absorption are achieved. Therefore, resistance of repaired SFRC in this way should be expected during the application where it is.subjected to thermal cyclizing (freeze-thaw cyclizing), including wetting and drying.
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Šušteršič et al. (2015) studied this question.
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