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Abstract

This study reveals the characteristics of using different repair materials and different repair outline designs for the partial-depth repair of the damage to corners of concrete paving slabs under wheel load. 3D finite element models were used to study how the changes to the outlines of the repaired area affect the maximum-stress and lowstress proportions in concrete elements that are attached to repaired interface when different repairing materials are used. The results indicate that the maximum stress increased but the proportion of lowstress shrank as the repaired area became larger. When cementitious repair materials were used, the depth of a square shaped repair area seemed to govern the effectiveness of the repair more strongly than does the side length. Epoxy mortar was not appropriate for use in square repaired areas, but could be used in small spherically shaped repair areas. Epoxy mortar was more effectively used in shallow repairs than in deep repairs.

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