1 The engineer will calculate pay adjustments for aggregate gradation, in-place density,
and asphalt binder content as follows: Aggregate Gradation:
PAA PAA
= =
0.67 × PMP × (PFA -1) × (LSA -APQ) 0.67 × PMPAP × (PFA -1) × (LSA -MLQ)
Aggregate Gradation for Recycle:
PAA PAA
= =
0.67 × RPMP × (RPF -1) × (LSA -APQ) 0.67 × PMPAP × (RPF -1) × (LSA -MLQ)
In-Place Density:
PAD
=
1.33 × PMP × (PFD-1) × LSD
Asphalt Binder Content:
PAAC PAAC
= =
0.67 × PMP × (PFAC -1) × (LSAC -APQ) 0.67 × PMPAP × (PFAC -1) × (LSAC -MLQ)
Where:
PAA PAD PAAC PMP
= = = =
Pay Adjustment for Aggregate Gradation (dollars) Pay Adjustment for In-Place Density ($$) Pay Adjustment for Asphalt Binder Content ($$) Unit Contract Price for the respective Plant Mix Pavement pay item ($$) Unit Contract Price for the respective Plant Mix Pavement Approaches pay item ($$) Recycled Hot Plant Mix Pavement Unit Contract Price ($$) Aggregate Gradation Pay Factor for evaluated lot Virgin Aggregate Gradation Pay Factor for evaluated lot In-Place Density Pay Factor for evaluated lot Asphalt Binder Content Pay Factor for evaluated lot Lot Size for Aggregate Gradation evaluated lot (short ton [metric ton]) Lot Size for In-Place Density evaluated lot (short ton [metric ton]) Lot Size for Asphalt Binder Content evaluated lot (short ton [metric ton]) Quantity of Plant Mix Pavement from the lot placed as approach pavement (short ton [metric ton]) Quantity of Plant Mix Pavement from the lot placed as mainline pavement (short ton [metric ton])
PMPAP = RPMP = PFA RPF
= =
PFD PFAC LSA
= = =
LSD
=
LSAC
=
APQ
=
MLQ
=
2 For the Hot Plant Mix Leveling, and Hot Plant Mix Leveling (Recycle) pay items, the
engineer will make pay adjustments for aggregate gradation and asphalt binder content but not for in-place density.
272
Vacant
273
Plant Mix Pavement Crack Sealing
403.1DESCRIPTION
1 This section describes the requirements for sealing cracks in plant mix pavement.
403.2MATERIALS
1 Provide materials in accordance with the following:
Material
Subsection
Aggregate for Blotter* Backer Rod Hot-Poured Elastic Sealant
803 807.7 807.2
*Do not use on airport projects. 2 Other materials may be used as blotter material, including portland cement, fly ash,
sawdust, blotter paper, or biodegradable, non-toxic, non-hazardous compounds designed to form a temporary protective barrier over the sealant to prevent tracking.
403.3EQUIPMENT
403.3.1 Removing Existing Sealant 1 Provide a plow, ripping tooth, wire brush, saw, or other equipment to remove existing
sealant from cracks. Use carbide-tipped blades or better. 403.3.2 Rout Crack
Provide mechanical, power-driven routing equipment that produces a reservoir with vertical sides and a flat bottom to the required dimensions. Do not use star bit type routers or equipment designed to plow the cracks to size. Use carbide- tipped blades or better.
403.3.3 Clean and Dry Crack 1 Provide an air compressor that produces clean, oil-free, compressed air with an output of
at least 125 ft³/min [3.5 m³/min]; equip with a ¾-inch [19 mm] diameter or smaller nozzle. Do not use backpack blowers. Provide compressed air heat lances that produce clean, oilfree, compressed air at least 750 ºF [400 ºC] at a velocity of at least 650 ft/s [200 m/s]. Do not use direct flame driers.
274
Plant Mix Pavements Crack Sealing