Highway Maintenance Challenges

HIGHWAY MAINTENANCE is a challenge to the engineering ______

Efficient highway maintenance is an extremely challenging ______ problem

There are two types of maintenance: PREVENTIVE and ______

Roads are exposed to tremendous ______ that will leave their marks on them

Precast Pavement Sections provide prompt replacement of localized sections of deteriorated pavement with minimum interference with flow of ______

Reactive Maintenance includes responding to inspections, complaints or emergencies eg filling ______, clearing and making safe damage resulting from traffic accidents

Routine Maintenance includes surface patching work, cyclic activities such as grass cutting, weed spraying, gulley cleaning, road sweeping and maintenance of planted areas and trees within the ______

Programmed Maintenance is normally carried out to a planned schedule and includes surface dressing, resurfacing, strengthening or reconstruction of roads or ______

Failures in Flexible Pavement are defined by the localized depressions or settlements. The depressions are normally followed with heaving in the vicinity and the sequence ultimately leads to the formation of a wavy pavement ______

Scaling of rigid pavement simply means, peeling off or flaking off of the top layer or skin of the concrete surface. Shrinkage cracks develop on concrete surface during the setting & curing operation. These cracks may form in longitudinal as well as in ______ direction