for Highway Construction Page 400 of 71 5 SECTION 522 – CONTROLLED DENSITY FILL (CDF)
522.01 Description.
Furnish all labor, materials, equipment, and incidentals necessary to provide, load, haul, place, and consolidate the controlled density fill (CDF) to the lines and grades specified.
522.02 Materials.
Provide CDF usin g concrete aggregates, fly ash, cement, and water. Guideline mix proportions are presented below: Portland Cement ................................................................................. ASTM C15 0 or AASHTO M 85 Fly Ash .................................................................................................................. Class F or Class C Aggregates ........................................................................................................................ ASTM C33 Water ...................................................................................................................................... Potable Admixtures ..............................................................................AASHTO M 194, ASTM C260 or C494 Ensure CDF mixture meets the acceptable properties in Table 522.02- 1. Table 522.02-1 – CDF Mixture P roperties CDF Mix Property Maximum gallons of mixing water per cubic yard 50 Pounds of cement per cubic yard 50 ± 5 Pounds of fly ash per cubic yard 250 ± 10 Pounds of dry aggregate per cubic yard (an assumed specific gravity of 2.67) 3,200 ± 100 Slump, inches 6 - 8 Submit the CDF mix design with the backup data for approval. Do not install CDF until after the CDF mix design has been approved. Provide a mix design from an approved laboratory.
522.03 Construction Requirements.
Batch, transport, and place CDF as specified in 502.
522.04 Method of Measurement.
The Engineer will measure acceptably completed work by the cubic yard. Measurement will be based upon batch delivery tickets submitted at the time of placement .
522.05 Basis of Payment .
The Department will pay for acceptable quantities at the contract unit price as follows : for Highway Construction Page 401 of 715 Pay Item Pay Unit Controlled Density Fill ............................................................................. CY 523-530 for Highway Construction Page 402 of 715 SECTIONS 523 -550 - RESERVED for Highway Construction Page 403 of 71 5 SECTION 551 – POLYESTER POLYMER CONCRETE (PPC) OVERLAY
551.01 Description.
A.General. Provide a polyester polymer concrete (PPC) overlay system on the prepared concrete surface as specified. The overlay system is defined as the furnished material necessary to complete the PPC overlay, including high molecular weight methacrylate (HMWM) resin primer, PPC resin binder, combined aggregate, and abrasive finish sand. Prepare the surface by shot blasting. Surv ey the bridge deck and approach slabs before overlay surface preparation and after overlay placement as specified in 675.03.S.3.e.
B.Submittals. Do not begin the deck preparation operations or begin placing PPC until receiving Engineer approval. Submit the following items for approval:
1.Overlay Placement Plan. Submit an overlay placement plan in pdf format that includes the following:
a.Schedule of overlay work and testing for each bridge.
b.Anticipated concrete deck repair locations and repair method.
c.Staging plan describing overlay placement sequence, including:
1.Construction joint locations. Construct longitudinal joints between passes along the centerline or edge of travel lanes.
2.Sequence of pl acement .
3.Placement widths.
4.Anticipated placement lengths.
5.Placement direction.
6.Joint work.
7.Location of proposed trial overlay(s).
d.Description of equipment and method for:
1.Surface preparation , including grinding and/or shot blasting.
2.The method and materials used to blow, contain, collect, and dispose of concrete debris generated by the deck preparation process, including provisions for protecting adjacent traffic from flying debris.
3.Mixing and applying HMWM resin primer.
4.Measuring, mixing, placing, and finishing the PPC.
5.Applying surface finish sand .
e.The method and materials used to contain HMWM resin and PPC components within the deck area receiving the overlay, including protecting and finishing inlets, bridge drains, and expansion joints .
Source: Idaho Standard Specifications for Highway Construction, 2023 Edition. Pages 436–438 of 768.