Abstract: A joint inspection system is described herein that develops and implements a practical, rapid imaging system to detect the presence of contaminants or moisture on the adhesion surfaces of a joint and to identify the presence of micro-fractures, fractures, or anomalies that will affect the integrity of the concrete adjacent to the joint faces (elements that could develop into post-construction spalling). The system utilizes existing technologies to provide an accurate, comprehensive, permanent, reviewable, comparable, location-identifiable imagery of the joint channel and the pavement surfaces immediately adjacent to the channel. The system facilitates the gathering of information (imagery) completely unavailable by current state-of-the-art inspection procedures.

Abstract: A sealed joint in a concrete highway or the like is installed in a channel formed above the usual shrinkage control cut or construction joint between adjoining concrete slabs by placing in such channel a preformed and relaxed length of a ductile and elastic material and bonding it to at least part of the concrete faces of the channel by a ductile and elastic adhesive. In some instances, an anti-bonding agent is applied to portions of the preformed and relaxed length to provide for joint expansion and retraction. The joint installation channel is preferably unusually shallow and may be dry cut. Its width is sufficiently narrow that traffic loads are carried by the concrete bordering the channel. The preformed length is preferably of strip formation, which is introduced into the channel from a stable roll of same.

Abstract: A sealed joint in a concrete highway or the like is installed in a channel formed above the usual shrinkage control cut between adjoining concrete slabs by depositing a mass of uncured ductile and elastic adhesive, preferably a special silicone material, in such channel and embedding a preformed length of a cured ductile and elastic material, again preferably a special silicone material, in such adhesive. The length is preferably of strip formation and has intermediate areas of its upper and lower surfaces covered with respective fillers of an anti-bonding agent to provide for joint expansion and retraction. The joint installation channel is preferably unusually shallow and may be dry cut. Its width is sufficiently narrow that traffic loads are carried by the concrete bordering the channel. Preformed strip is introduced into the adhesive in the channel from a stable roll of same.