# Portland Cement Concrete Pavement - URBAN

> Project No: \_\_\_\_\_\_\_\_\_\_
>
> Date: \_\_\_\_\_\_\_\_\_\_
>
> Reviewer: \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_
>
> Time Elapsed: \_\_\_\_\_\_\_\_\_\_%
>
> Work Complete: \_\_\_\_\_\_\_\_\_\_%
>
> In Company With: \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

## Specification Requirements (UCP sheet 3)

> Concrete Mix Temperature \_\_\_\_\_\_\_\_\_\_°F min &
> \_\_\_\_\_\_\_\_\_\_°F max
>
> Air Content \_\_\_\_\_\_\_\_\_\_% to \_\_\_\_\_\_\_\_\_\_%
>
> Slump \_\_\_\_\_\_\_\_\_\_inches to \_\_\_\_\_\_\_\_\_\_inches
>
> C = Cement\
> P=Pozzolan
>
> W/C Ratio \_\_\_\_\_\_\_\_\_\_lbs/lbs or
>
> Strength \_\_\_\_\_\_\_\_\_\_psi (Minimum compressive at 28 days)
>
> Thickness \_\_\_\_\_\_\_\_\_\_inches
>
> Flexural Strength \_\_\_\_\_\_\_\_\_\_psi (minimum at 7 days)
>
> Note: \"Urban Concrete Pavement\" (UCP) sheets 1 - 16.

## Plant Site

1.  Which gradation was selected (UCP sheets 1 & 2)?

    a.  Coarse aggregate\
        (check test results)

    b.  Fine aggregate\
        (check test results)

2.  Are stockpiles neat and regular in form? Have the stockpiles been
    built for the quantity needed for a single day\'s production for
    paving or elongated stockpiles from which the approximate tonnage
    required for a single day\'s paving operation can be readily
    identified and marked off from the remainder of the stockpile (UCP
    sheet 4)?

3.  Have stockpiles been built two days in advance of the time they are
    to be used but not accepted more than 30 days before intended use
    (UCP sheet 4)?

4.  Has the project engineer approved the mix design (UCP sheet 4)? Any
    changes to mix design? If so, were they approved (UCP sheet 4)?

5.  Has the water source been approved (UCP sheet 2)?

6.  Has a water reducing agent been included in the mix design (UCP
    sheet 2)?

7.  Has Pozzolan (fly ash) been included in the mix? What percent
    replacement? Is the fly ash coming from one of the DOT approved
    sources? Has 611 lbs/cy of cement been used in the design before
    replacement (UCP sheet 2)?

8.  Other fly ash sources must be approved by the project engineer. Have
    any other sources been used, or has the source of supply been
    changed during the life of the project (UCP sheet 2)?

9.  Is the batch plant equipped with a numerical printout device that
    will make a continuous, permanent, and accurate record of the
    weights of cement, gravel, sand and water (including water added
    after initial batching), and additives used in each batch of
    concrete with the time of day for each batch shown in hours and
    minutes with daily accumulated totals (UCP sheet 6)?

10. Have the beams, scales, and water meters on the batch plant been
    checked and certified by the State Department of Agriculture (UCP
    sheet 6)?

11. a.  Central Mixed. Has the concrete been mixed for 80 seconds after
        all the materials are in the drum? Based on efficiency tests
        using design mix materials, has the engineer approved a shorter
        mixing time not less than 60 seconds (UCP sheet 6)?

    b.  Transit Mixed. Has the concrete been mixed in accordance with
        AASHTO M-157? Also, an additional 20 revolutions at mixing speed
        if, water has been added after initial batching (UCP sheet 6)?

12. Have admixtures been added to the mix water such that each enters
    the mixer drum separately (UCP sheet 6)?

13. When Pozzolan is used, has the cement been introduced before the
    Pozzolan (UCP sheet 6)?

14. Are air content and slump tests and compressive strength cylinders
    cast for each 200 CY of concrete (UCP sheet 5)? Are samples taken on
    a random basis?

15. Are air content and slump tests made on the first three loads at
    start-up and after any shutdown of more than one hour? Also, if a
    test fails on a random sample, are three consecutive loads tested
    and accepted before full operation is resumed (UCP sheet 5)?

16. Have out of specification tests been verified by one more test on
    the same load? If the second test is within specifications, has a
    third test been used as a reference test (UCP sheet 5)?

17. Have two sets of two flexure beams been cast for each day concrete
    is placed for the flexural strength tests (UCP sheet 5)?

18. Has the batching operation been slowed down to allow completion of
    each air and slump test before the next batch is made so test
    results can be communicated to the batch plant operator and
    necessary corrections made (UCP sheet 5)?

19. Has the contractor provided a communication system so the inspector
    on the platform can communicate with the batch plant operator (UCP
    sheet 7)?

## Project Site

1.  Has the base surface upon which the concrete is to be placed been
    kept moistened 500 feet in front of the paver without areas of
    standing water (UCP sheet 8)?

2.  Is the slip-form paver equipped with vibrators meeting the following
    requirements:

> Vibrator minimum requirements:

-   Eccentric Diameter 1-7/8 inch min

-   Frequency 9,500 vibrations per/minute minimum

-   Spacing 18\" maximum mounted longitudinally

> The vibrators shall be operated horizontally at the midpoint of the
> concrete slab and mounted so they will maintain this position.
> Parallel to the direction on paving.
>
> Each vibrator checked for operation by the Contractor each day. Any
> indication that a vibrator or vibrators are not operating properly,
> the paving operations shall stop immediately and not resume until the
> faulty vibrator or vibrators have been repaired or replaced.

3.  Is the discharge of mixed concrete from non-agitating hauling
    equipment accomplished within thirty-five minutes after introduction
    of the mixing water? Within 75 minutes for agitating haul units? Has
    the concrete been distributed by the lay down machine within fifteen
    minutes of dumping (UCP sheet 8)?

4.  Has the concrete been deposited in such a manner as to require as
    little re-handling as possible (UCP sheet 8)?

5.  Has any water been added to the surface behind the final screed on
    the paver (UCP sheet 8)?

6.  Have tie bars been used for all longitudinal joints and transverse
    contact joints (UCP sheet 7)?

7.  Have there been any delays in excess of thirty minutes in performing
    the preliminary finishing (UCP sheet 10)?

8.  Has a drag finish been completed with one pass of a burlap drag?
    Have the transverse grooves been properly placed (UCP sheet 10)?
    (Spacing of 3/4 inch \" ± 1/8 inch, depth 3/32 to 5/32 inch)

9.  Has the curing-sealing compound been applied to the entire pavement
    surface and exposed edges as soon as finishing operations have been
    completed at a rate of one gallon per 100 SF (UCP sheet 10)?

10. Has the compound been applied to the entire pavement surface with
    mechanical sprayers? Is the spraying equipment of the fully
    atomizing type (UCP sheet 10)?

11. Has the edge slump requirement for longitudinal contact joints been
    met (1/8 inch in 10 feet) (UCP sheet 11)?

12. Has the concrete in the adjacent lane attained a modulus of rupture
    of 490 psi before placement of concrete in the adjoining
    longitudinal section (UCP sheet 8)?

## Sawing & Sealing

1.  Have the sawed joints been made with suitable power driver saws?
    Does the contractor have a minimum of two working power saws and one
    standby power saw on the project when concrete operations are
    underway (UCP sheet 12)?

2.  Has the sawing of the joints commenced as soon as the concrete has
    hardened sufficiently to permit sawing (UCP sheet 12)?

3.  Are all joints immediately flushed with water after sawing? Are the
    cuttings immediately washed off the road surface (UCP sheet 12)?

4.  Have the joints been Thoroughly cleaned immediately after sawing of
    all loose debris and cement powder with a jet of water at 2,000 psi
    minimum pressure (UCP sheet 12)?

5.  Have the joints been blown with air at a minimum of 100 psi just
    prior to placing the joint sealant (UCP sheet 12)?

6.  Have all the joints been filled with the joint sealant? Do they have
    the proper clearance (longitudinal 1/8 inch \" ± UCP sheet 12,
    transverse 1/4 inch \" ± plan sheet 2B)?

## General Notes

> Check test results for the following:

1.  Compressive Strength (4,000 psi) (UCP sheet 16).

2.  Thickness (UCP sheets 14, 15 & 16). All corrective work for pavement
    profile is to be completed before thickness tests.

3.  Surface Smoothness (UCP sheets 13 & 14). PI of 12 inches/mile with
    grinding of deviations greater than 0.3 inches in 25 feet.

4.  Any Price Adjustments (UCP sheet 16)?