STMC for maintenance of stretch from Km 289.500 to Km 299.000 on Kota Darah section of NH-52 in the State of Rajasthan.

Dismantling of cement concrete pavement of any grade by mechanical means using pneumatic tools, breaking to pieces not exceeding 0.02 cum in volume and stock piling at designated locations and disposal of dismantled materials up to a lead of 1000 meters, stacking serviceable and unserviceable materials separately as per MoRTH specification clause 202.

Construction of dry lean cement concrete Sub- base over a prepared sub-grade with coarse and fine aggregate conforming to IS: 383, coarse aggregate 26.5mm nominal size aggregate cement ratio not to exceed 15:1, aggregate gradation after blending to be as per table 600-1, cement content not to be less than 150 kg/ cum, optimum moisture content to be determined during trial length construction, concrete strength not to be less than 10 Mpa at 7 days, mixed in a batching plant, transported to site, laid with a paver with electronic sensor, compacting with 8-10 tonnes vibratory roller, finishing and curing. as per MoRTH Specification cl. 601.

Construction of un-reinforced, dowel jointed, plain cement concrete pavement over a prepared sub base with OPC 43 grade cement , coarse and fine aggregate (table 600-2 & 600-3) conforming to IS 383, maximum size of coarse aggregate 31.5mm nominal size mixed in a batching and mixing plant as per approved Mix design to achieve required design mix grade of controlled concrete, transported to site, laid with a slip form paver, spread, compacted and finished in a continuous operation including provision of contraction, expansion, construction and longitudinal joints, joint filler bord , separation membrane, sealant primer, joint sealant (Table 600-4), debonding strip, dowel bar (IS : 432 Grade-I), tie rod (IS : 1786 Fe500 or IS : 432 Grade-I) , admixtures (IS : 9103 & IS : 6925) as approved, curing compound, finishing to lines and grades as per drawing including joimt cutting & texturing etc complete as per MoRTH Specification cl. 602 (with flexural strengthe minimum 4.5 MPa).

Applying epoxy mortar over leached, honey combed and spalled concrete surface and exposed steel reinforcement complete as per Technical Specification

Filling Pot- holes and Patch Repairs with open - graded Premix surfacing, 20mm followed by seal coat type "B". Removal of all failed material, trimming of completed excavation to provide firm vertical faces, cleaning of surface, painting of tack coat on the sides and base of excavation as per clause 503, back filling the pot holes with hot bituminous material using bitumen 80/100 as binder as per clause 511, compacting, trimming and finishing the surface to form a smooth continuous surface, all as per clause 3004.2

Providing, laying, spreading and compacting stone aggregate for Wet Mix Macadam (as per table 400-12 and 400-13) specification including premixing the material with water to OMC in wet mix plant as per approved design mix, carriage of mixed material by Tipper to site, laying in uniform layers with motor grader/Front end Loader/paver finisher, in sub base/ base course on a well prepared under base and compacting with vibratory roller to achieve the desired density including lighting, guarding, barricading and maintenance of diversion etc. (MoRTH specification : Clause 406 & Clause 112) by mechanical means with all lead .

Providing and applying primer coat over prepared surface or granular base with bitumen emulsion SS-1 as per IS: 8887 & manufacturer’s specifications @ 7 kg /10 Sqm with a self propelled or towed bitumen pressure sprayer equipped for spraying the material uniformly at specified rates and temperatures as per MoRTH specification CI 502 & 112 (Including cleaning of road surface )

Providing and applying tack coat on the prepared surface, with bitumen emulsion RS-1 as per IS : 8887 & manufacturer’s specifications @ 3 kg /10sqm. With a self propelled or towed bitumen pressure sprayer equipped for spraying the material uniformly at specified rates and temperatures as per MoRTH specification Clause 503 & 112 ( Including cleaning of bituminous road surface ) Add extra to item No. 5.2 for 1Kg / 10 Sqm emulsion (in km 297-297/700)

Providing and laying Dense Bituminous Macadam on prepared surface with specified graded crushed aggregates as per table 500-8 & 500-10 and design mix for base/binder course including loading of material with Front end loader, heating of binder (including cost of anti-stripping compound wherever required) aggregate and filler as per table 500-9, in hot mix plant More than 60-90 TPH, transporting the mixed material by tippers and laying with sensor paver finisher as per clause 505.3.5 to the required level and grade rolling by self propelled power rollers and vibratory rollers or pneumatic tyred roller 150-250KN. TP=0.7MPa to achieve the desired density (approved by the department) but excluding cost of primer/tack coat. [MoRTH Specification : Clause 505 & 112] with all leads Grading II (26.5mm nominal size) - Bitumen @ minimum 4.5% of mix using VG 30 ( thickness 50 - 75 mm )

Providing and laying bituminous concrete as per design mix on prepared surface with specified graded stone as per table 500-16 & 500-17 for wearing course including loading of aggregate with Front end loader and hot mixing of binder (including cost of anti-stripping compound, wherever required) and filler as per table 500-9 with aggregates in hot mix plant More than 60-90 TPH Transporting the mix material with tipper and laying with sensor paver finisher (as per clause 507.3.5) to the required level , grades and rolling with vibratory compactor and pneumatic tyred roller 150-250 KN,TP=0.7 Mpa, to achieve the desired density (approved by the department) excluding cost of primer/tack coat (MoRTH Specification : Clause -507 & 112) with all lead.Grading II (13.20 mm nominal size) - Bitumen @ minimum 5.40% of mix & thickness 30 - 40 mm VG 40 Grade