Published by department of transportation

30-1.02 MATERIALS

30-1.02A General

30-1.02B Supplementary Aggregate

30-1.02C Water

30-1.02D Cement

30-1.02E Asphaltic Emulsion

For dilution, the weight ratio of water added to asphaltic emulsion must not exceed 1 to 1.

30-1.03 CONSTRUCTION

30-1.03A General

Do not use a heating device to soften the pavement.

30-1.03B Equipment

Grading equipment must be a motor grader with automatic grade controls for profile elevation and cross slope.

If specified, supplementary aggregate or cement spreading equipment must uniformly distribute the supplementary aggregate or cement throughout the area to receive it. The spreader must be equipped with working scales or proportioning and distance measuring devices to control the spread rate.

If supplementary aggregate or cement is spread before pulverizing the existing pavement, the pulverizing equipment must produce a uniform mixture without segregation.

30-1.03C Surface Preparation

Before pavement reclamation activities start, prepare the existing roadway surface by:

1. Clearing foreign matter including vegetation

2. Removing standing water

3. Referencing the profile and cross slope

4. Marking the proposed longitudinal cut lines on the existing pavement as follows:

4.1. Cut lines must coincide with points where the existing cross slope changes, approximately at the centerline and edge of traveled way

4.2. Cut lines must indicate the sequence of the cuts

5. Referencing existing lane lines and striping layout

If excess material is to be stored adjacent to the shoulder, clear and dispose of the weeds, grass, and debris from the area.

30-1.03D Pulverizing and Mixing

If the established grade will cause noncompliance with the thickness requirements, notify the Engineer.

If you encounter unstable subgrade or rocks greater than 4 inches in the roadway section notify the Engineer. The Engineer determines the extent of the problem and the corrective measures to be taken.

30-1.03E Compacting and Grading

Remove any solids that are larger than 3 inches in the pulverized roadbed mixture before shaping and compacting.

30-1.03F Finishing

The finished roadbed surface must not vary more than 0.05 foot from the lower edge of a 12-foot straight edge laid in directions parallel and perpendicular to the centerline.

30-1.04 PAYMENT

The payment quantity for supplementary aggregate is determined as specified for aggregate base in section 26.

The payment quantity for asphaltic emulsion is measured under section 94.

30-2 PULVERIZED ROADBED

30-2.01 GENERAL

30-2.01A Summary

Section 30-2 includes specifications for constructing a uniform reclaimed pavement base by pulverizing the asphalt concrete pavement and underlying material.

30-2.01B Definitions

Lot: 2000 sq yd of pulverized roadbed

30-2.01C Submittals

At least 10 days before starting pulverized roadbed activities submit the QC plan.

The QC plan must include a pulverizing and paving plan outlining the sequence of work, including the maximum production rate for pulverizing activities.

Submit the test results for the quality characteristics within the times after sampling shown in the following table:

Quality characteristic	Maximum reporting time allowance
Gradation	24 hours
Depth of cut
In-place wet density
Relative compaction

30-2.01D Quality Assurance

30-2.01D(1) General

The specifications for a preoperation meeting under section 30-1.01D(2) do not apply to pulverized roadbed.

30-2.01D(2) Quality Control

30-2.01D(2)(a) General

Meet with the Engineer 1 week before starting pulverized roadbed activities to review the QC plan.

Perform sampling and testing for each test strip and production work at the specified frequency for the quality characteristics shown in the following table:

Pulverized Roadbed Quality Characteristic Sampling Locations and Testing Frequencies
Quality characteristic	Test method	Minimum sampling and testing frequency	Sampling location
Gradation	California Test 202	Test strip and 1 per lot	Loose mix after pulverizing and mixing
Depth of cut	NA	300 feet	Both sides of reclaiming machine along cut length
In-place wet density	California Test 231	The same locations as relative compaction tests
Relative compaction	California Test 231	One per test strip and 10 random locations per lot	Compacted roadbed

30-2.01D(2)(b) Test Strip

Allow 24 hours for authorization of the test strip.

30-2.01D(3) Department Acceptance

The Department accepts pulverized roadbed based on:

1. Visual inspection including:

1.1. Segregation, tearing, and scarring of the finished surface

1.2. Variance of more than 0.05 foot measured from the lower edge of a 12-foot straightedge

1.3. Uniform surface texture throughout the work limits

1.4. Repaired areas

2. Compliance with the following table:

Pulverized Roadbed Requirements for Acceptance
Quality characteristic	Test method	Requirement
Relative compaction (min, %)	California Test 231	95
Thickness (ft)	Field measurement	Not more than 0.05 ft less than the thickness shown

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