Freeze-thaw bond durability of rapid-setting concrete repair materials

A survey of many state Departments of Transportation (DOTs) identified bond strength as the most important property of a repair material. This study f ocused on how moisture conditions and surface preparation of the old concre te and curing of the repaired concrete influenced the bonding of portland c ement concrete and rapid-set repair materials when exposed to freeze-thaw c ycling. Three rapid-setting repair materials were investigated and compared using a prism splitting test.