Details: 5.5 providing, laying and rolling of built-up spray grout layer over prepared base consisting of a two layer composite construction of compacted crushed coarse aggregates using motor grader for aggregates. key stone chips spreader may be used with application of bituminous binder after each layer and with key aggregates placed on top of the second layer to serve as a base conforming to the line, grades and cross-section specification,the compacted layer thickness being 75mm. (as per morth specification, 4th revision) 6.5e.1.mo providing and applying tack coat on the prepared surface, heating bitumen in boiler and spraying the bitumen with spray set fitted on bitumen boiler- on block topped surface bitumen @ at 5kg/10sqm. 6.2.mo cleaning of the existing black topped surfaces with brooms, soft brushes and finally dusting with old gunny bags and/or compressed air to receive bituminous treatment. as per clause no 503.3.1 of most specification.
Sector: PWD