\$\$501.00A

######### Section 501.---RIGID PAVEMENT

Revised 8 May 2005

*[INCLUDE THE FOLLOWING FOR COLORED SEALANT, AS APPROPRIATE]{.mark}*

\$\$501.02A

501.02. Add the following:

\$\$501.02B

> Furnish joint sealant material conforming to Subsection 712.01(e) that
> is a *[insert color]{.mark}* color matching the color of the existing
> pavement.

\$\$501.02C

> Furnish joint sealant material conforming to Subsection 712.01(f) that
> is a *[insert color]{.mark}* color matching the color of the existing
> pavement.

[]{.mark}

*[INCLUDE THE FOLLOWING FOR STEEL PLATES, \$\$501.14B IS USED]{.mark}*

\$\$501.02D

> Furnish steel plates and keep available on the project for emergency
> use.

[]{.mark}

*[INCLUDE THE FOLLOWING FOR ACCELERATED FULL-DEPTH REPLACEMENT]{.mark}*

\$\$501.03A

501.03. Add the following:

**Accelerated Full-depth Patching**. Design the concrete mix according
to Subsection 552.03 and conform to Table 501-1a. Make test specimens
according to AASHTO T 23, except that specimens shall remain in molds
until tests are conducted after a 7-hour cure.

**Table 501-1a**

**Rigid Pavement Composition**

+-----------+-----------+----------+-----------+-----------+-----------+
| Wat       | Te        | Slump    | Air       | Aggregate | 7-Hour    |
| er/Cement | mperature |          | Content   | Size      | Minimum   |
| Ratio     |           |          |           |           |           |
|           | of        |          | (%)       | (AASHTO M | Co        |
| (maximum) |           |          |           | 43)       | mpressive |
|           | Concrete  |          |           |           |           |
|           |           |          |           |           | Strength  |
+-----------+-----------+----------+-----------+-----------+-----------+
| 0.42      | 70±20     | 5.0±0.75 | 5½±1½     | No. 57    | 1,200 psi |
|           | ^o^F      | inches   |           |           |           |
|           |           |          |           |           | [(8       |
|           | [(20±10   | [(120±20 |           |           | Mpa       |
|           | ^o^C      | mm)      |           |           | )]{.mark} |
|           | )]{.mark} | ]{.mark} |           |           |           |
+-----------+-----------+----------+-----------+-----------+-----------+

*[INCLUDE THE FOLLOWING FOR COLORED PAVEMENT]{.mark}*

\$\$501.03B

501.03 Add the following:

**Pavement Containing Color**. Prepare 6-foot by 6-foot by 4-inch [(2 by
2-meter by 10 centimeter)]{.mark} test panels at an area near the
project designated by the CO. Do not begin concrete pavement work until
the CO inspects and approves the appearance of the test panels and the
concrete mix design 28 calendar days after the test panels are
constructed. The use of high range water reducer or accelerator in the
test panel is prohibited.

[]{.mark}

*[INCLUDE THE FOLLOWING FOR FULL-DEPTH REPLACEMENT OR SMALL QUANTITY OF
RIGID PAVEMENT (SEE \$\$501.12A)]{.mark}*

\$\$501.11A

501.11. Add the following to the first paragraph:

Seal joints within 5 calendar days after patching to prevent spalling.

\$\$501.12A

501.12. Add the following:

For full depth replacement or small individual areas of rigid pavement
(less than *[(insert quantity, to be determined during design &
review)]{.mark}* square yards [(square meters)]{.mark}), meet the
requirements of (c) below.

# [INCLUDE THE FOLLOWING IF APPLICABLE]{.mark}

\$\$501.13A

501.13. Add the following:

Schedule the patching operation so that all areas where the pavement has
been removed are repaired during the same work period and the roadway
opened to traffic according to Section 156. Complete all concrete
operations sufficiently before opening the lane to traffic to allow the
concrete to have attained sufficient strength to support traffic
according to Subsection 501.14. In case of emergency, temporarily fill
and plate the repair areas according to Subsection 501.14.

[]{.mark}

*[INCLUDE THE FOLLOWING FOR ACCELERATED FULL-DEPTH REPLACEMENT]{.mark}*

\$\$501.14A

501.14. Add the following:

For accelerated full-depth patches, do not allow traffic on new pavement
until the minimum compressive strength has reached 1,200 pounds per
square inch [(8 MegaPascals)]{.mark} according to AASHTO T 22.

[]{.mark}

*[INCLUDE THE FOLLOWING, IF APPLICABLE]{.mark}*

\$\$501.14B

501.14 Add the following:

If an emergency or unforeseen circumstance prevents the completion of a
pavement patch before opening the roadway, backfill and compact the
excavation with aggregate base and cover with a steel plate so that the
lane can be immediately opened to traffic. At the beginning of the next
day\'s work, completely remove the aggregate, in a manner which will not
disturb the subgrade or any dowels, load transfer tie bars, or load
transfer assemblies which may have been previously placed.

Place steel plates over concrete patches only if the concrete has not
developed sufficient strength as determined by the CO.

[]{.mark}

*[INCLUDE THE FOLLOWING FOR ACCELERATED FULL-DEPTH REPLACEMENT]{.mark}*

\$\$501.15A

501.15. Add the following:

**Field Control for Accelerated Full-Depth Patching**. Conduct tests for
concrete compressive strength, and gradation and moisture control of
coarse and fine aggregate. Should the mix be of a questionable nature or
the previous patches show poor performance, the CO may require that test
cylinders be made, cured according to Subsection 552.15, and tested for
a 7-hour minimum compressive strength of 1,200 pounds per square inch
[(8 MegaPascals)]{.mark}. The minimum test frequency for slump and air
content will be 1 per 20 cubic yards [(15 cubic meters)]{.mark}. Conduct
compressive strength tests as required by the CO. Conduct tests for
gradation and moisture content daily before production. Concrete
compressive strength will be evaluated under Subsection 106.05. The
maximum pay factor for concrete compressive strength will be 1.0.

[]{.mark}

*[INCLUDE THE FOLLOWING IF CONCRETE QUANTITY \< 250 YD^3^ (190
m^3^)]{.mark}*

\$\$501.15B

501.15. Delete the third paragraph, the last sentence in both (a) and
(b), and all of (c). Substitute the following for the third paragraph:

Concrete compressive strength, pavement thickness, and pavement
smoothness, will be evaluated under Subsection 106.04. Determine
pavement smoothness according to Subsection 501.12. See Table 501-3 for
minimum sampling and testing requirements for compressive strength and
pavement thickness.