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In general, surface preparation of the substrate concrete is considered essential to achieve a durable repair.
According to ASTM C882, 144 half-specimens as substrate concrete are cast.
This is in contrast to the standard approach when the substrate concrete is deliberately roughened to create better bonding to the new concrete.
The combined system of substrate concrete with different mix proportions of flowable high strength system reinforced by hybrid fibers was used to study its mechanical properties.
In this study, a modified retrofit method based on substrate repairs was developed, which is bonding CFRP after replacing V-notch of substrate concrete with polymer mortar.
The main result is that the Sacrificial Anode should be embedded in the substrate concrete area rather than in the patch area.
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An analytical model is developed in this work to derive the bond slip relationship at the reinforcement-substrate concrete interface (joint) for externally bonded reinforcement.
Different overlay thicknesses, two types of substrates (concrete slabs and composite steel beams), and the impact of either not having or applying a water-proofing membrane are considered.
We found that the small, man-made cattle ponds, with either natural substrate or concrete drinking troughs, were more often affected than the larger, semi-natural ponds.
The comparatively high cost of epoxy-resin systems restricts them principally to repairing or surfacing existing flooring substrates; e.g., concrete.
The interface treatment by surface roughening and rebar planting can provide effective bond strength between the substrate-new concrete.
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