SECTION 455: DIAMOND-GRINDING AND DIAMOND-GROOVING OF PORTLAND CEMENT CONCRETE PAVEMENT (PCCP)
455.1 Description
This Work consists of diamond- grinding and/or diamond-grooving PCCP, and includes the removal of slurry and residue resulting from the Work. Diamond grinding is a pavement pre servation technique that corr ects a variety of surface imperfections on both concrete and asphalt pavements. The diam ond blades used for grinding are composed of industr ial diamonds and metallurgical powder.
455.2 MATERIALS—Reserved
455.3 Construction Requirements
455.3.1 Equipment
The Contractor shall use power-driven, self-propelled machines equipped with diamond blades specifically designed to g rind, groove, and texture PCCP . The Contractor shall ensure the grinder has a depth control device to detect variations in the concrete surface and adjust the cutting head height to maintain the depth of the specified groove. The Contractor shall equip the diamond grinding mach ine with alignment control devic es. The Contractor shall ensure the Equipment grinds and grooves th e pavement surface to the specified smoothness tolerances and textures, without causi ng excessive raveling of the joints or cracking or fracturing of the aggregates.
455.3.2 Diamond Grinding and Grooving Operations
The Contractor shall begin and end longitudinal diamond grindin g and grooving at lines normal to the pavement centerline, unless otherwise specified i n the Contract. The Contractor shall grind designated areas until the pavement surfaces on both sides of transverse joints and cracks are on the same plane. The Contra ctor shall ensure that diamond grinding produces a unifo rm finished surface, eliminate s joint or crack faults, and provides positive lateral surf ace drainage by maintaining a con stant cross-slope within the diamond grinding limits of each lane. The Contractor shall grind auxilia ry or ramp lane transitions f rom the mainline edge to provide positive drainage and an Acceptable riding surface. The Contractor shall make grooving patterns in accordance with Section 512.3.10.3, “Grooving of Hardened Concrete,” unless otherwise specified in the Contract.
455.3.3 Slurry Removal
The Contractor shall continuously remove the slurry from the Wo rk. The Contractor shall not allow the slurry to flow across lanes open to traffic or into gutters or other drainage facilities.
455.3.4 Final Surface Finish
The Contractor shall produce a pavement surface in accordance w ith Section 450.3.5.3, Section 455: Diamond Grinding and Diamond Groov ing of Portla nd Cement Concre te Pavement Page 262 “Surfacing Smoothness Requirements.” The Contractor shall ensure the texture has parallel longitudin al corrugations that present a narrow ridge corduroy-type appearance. The Contractor shall make the peaks and grooves approximately 0.08 inch apart in elevation. The Contractor sha ll make the grooves from 0.08 inch to 0.16 inch wide, and the peaks from 0.08 inch to 0. 12 inch wide. The Contractor shall determine the appropriate number of grooves per yard to p roduce the specified surface requirements.
455.3.5 Acceptance
The Contractor shall inspect tr ansverse joints and random crack s to ensure that adjacent surfaces are in the same plane. The Contractor shall regrind a s directed by the Project Manager, at no additional c ost to the Department.
455.4 Method of Measurement
The Department will measure the Diamond Grinding and Diamond Gr ooving of Portland Cement Concrete Pavement actually ground or grooved on the top width and length of the pavement if paid by the unit. If no Bid Item exists for Diamon d Grinding and Diamond Grooving of Portland Cement Concrete Pavement, payment will be Incidental to Section 450, “Portland Cement Concrete Pavement (QLA)” or Section 451, “Port land Cement Concrete Pavement,” as applicable.
455.5 Basis of Payment
Pay Item Pay Unit Diamond Grinding of PCCP Square Yard Diamond Grooving of PCCP Square Yard Division: 500 Page 263 DIVISION 500 – STRUCTURES
Division C — ontents
501: Driven Piles ............................................. ............................... 264 502: Drilled Shafts ........................................... ............................... 278 504: Load Testing of Bearing Piles ............................ .................... 291 505: Pile Integrity Testing ................................... ............................ 300 506: Mechanically Stabilized Earth Retaining Structures ....... ........ 304 509: Portland Cement Concrete Mix Designs ..................... ........... 313 510: Portland Cement Concrete ................................. .................... 334 511: Concrete Structures ...................................... ......................... 348 512: Superstructure Concrete .................................. ...................... 369 514: Concrete Barrier Railings for Bridges .................... ................. 381 515: Reinforced Concrete for Minor Structures ................. ............. 383 516: Flowable Fill ............................................ ............................... 385 517: Precast Concrete Structures .............................. .................... 389 518: Pre-Stressed Concrete Members ............................ ............... 396 519: Shotcrete ................................................ ................................ 409 520: Post Tensioned Concrete Bridge Members ................... ........ 423 521: Non-Shrink Mortar ........................................ .......................... 429 522: Chemical Adhesive Anchors ................................ .................. 431 523: Cementitious-Grouted Dowels and Anchors .................. ........ 435 529: Pier and Abutment Bearing Modification ................... ............. 438 531: Permanent Anti-Graffiti Protective Coating ............... ............. 440 532: Penetrating Water Repellent Treatment .................... ............. 442 533: Concrete Structure Repair ................................ ...................... 445 534: Epoxy Injection .......................................... ............................. 452 535: Crack Sealing Using Low-Viscosity, Gravity-Fed Sealers ... ... 456 536: Polymer Concrete Bridge Deck Overlay ..................... ............ 460 537: Polyester/Epoxy Concrete Overlay ......................... ............... 467 540: Steel Reinforcement ...................................... ......................... 475 541: Steel Structures ......................................... ............................. 484 542: High-Strength Bolts ...................................... .......................... 497 543: Metal Railing ............................................ ............................... 510 544: Protective Coating of New Structural Steel ............... ............. 513 545: Protective Coating of Miscellaneous Structural Steel ............. 523 546: Recoating Structures ..................................... ......................... 536 Division: 500 Page 263 DIVISION 500 – STRUCTURES
Division C — ontents
501: Driven Piles ............................................. ............................... 264 502: Drilled Shafts ........................................... ............................... 278 504: Load Testing of Bearing Piles ............................ .................... 291 505: Pile Integrity Testing ................................... ............................ 300 506: Mechanically Stabilized Earth Retaining Structures ....... ........ 304 509: Portland Cement Concrete Mix Designs ..................... ........... 313 510: Portland Cement Concrete ................................. .................... 334 511: Concrete Structures ...................................... ......................... 348 512: Superstructure Concrete .................................. ...................... 369 514: Concrete Barrier Railings for Bridges .................... ................. 381 515: Reinforced Concrete for Minor Structures ................. ............. 383 516: Flowable Fill ............................................ ............................... 385 517: Precast Concrete Structures .............................. .................... 389 518: Pre-Stressed Concrete Members ............................ ............... 396 519: Shotcrete ................................................ ................................ 409 520: Post Tensioned Concrete Bridge Members ................... ........ 423 521: Non-Shrink Mortar ........................................ .......................... 429 522: Chemical Adhesive Anchors ................................ .................. 431 523: Cementitious-Grouted Dowels and Anchors .................. ........ 435 529: Pier and Abutment Bearing Modification ................... ............. 438 531: Permanent Anti-Graffiti Protective Coating ............... ............. 440 532: Penetrating Water Repellent Treatment .................... ............. 442 533: Concrete Structure Repair ................................ ...................... 445 534: Epoxy Injection .......................................... ............................. 452 535: Crack Sealing Using Low-Viscosity, Gravity-Fed Sealers ... ... 456 536: Polymer Concrete Bridge Deck Overlay ..................... ............ 460 537: Polyester/Epoxy Concrete Overlay ......................... ............... 467 540: Steel Reinforcement ...................................... ......................... 475 541: Steel Structures ......................................... ............................. 484 542: High-Strength Bolts ...................................... .......................... 497 543: Metal Railing ............................................ ............................... 510 544: Protective Coating of New Structural Steel ............... ............. 513 545: Protective Coating of Miscellaneous Structural Steel ............. 523 546: Recoating Structures ..................................... ......................... 536 Division: 500 Page 264 547: Safety and Environmental Requirements for Painting Operations ................................................... ........................... 548 548: Coating of Concrete ...................................... ......................... 552 550: Treated Timber ........................................... ............................ 557 560: Elastomeric Bearing Pads ................................. ..................... 563 561: Elastomeric Compression Joint Seals ...................... .............. 566 562: Bridge Joint Strip Seals ................................. ......................... 568 563: Polymer Bridge Joint Seals ............................... ..................... 573 564: Preformed Closed Cell Foam Bridge Joint Seals ............ ....... 576 565: Preformed Silicone Coated Foam Joint System .............. ....... 579 570: Pipe Culverts ............................................ .............................. 582 571: Structural Plate Structures .............................. ....................... 595 Section 501: Driven Piles Page 265