AASHTO PP83_16_2020_

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Standard Practice for

Microsurfacing Design

AASHTO Designation: PP 83-16 (2020)1

Technical Subcommittee: 5b, Bridge and Pavement

Preservation

Release: Group 1 (April)

American Association of State Highway and Transportation Officials

555 12th Street NW, Suite 1000

Washington, DC 20004

Accessed by account: University of Michigan | Date: Sun Jan 17 14:18:26 2021 | IP address: 141.213.172.10

TS-5b PP 83-1 AASHTO

Standard Practice for

Microsurfacing Design

AASHTO Designation: PP 83-16 (2020)1

Technical Subcommittee: 5b, Bridge and Pavement

Preservation

Release: Group 1 (April)

1. SCOPE

1.1. This standard practice for mix design evaluation uses mixture properties to determine the

proportions of polymer-modified emulsified asphalt, mineral aggregate, water, mineral filler, and

additives to produce a microsurfacing job-mix formula.

1.2. The values stated in SI units are to be regarded as the standard. The inch-pound units are presented

in parentheses for informational purposes and may not be exact equivalents.

2. REFERENCED DOCUMENTS

2.1. AASHTO Standards:

 M 85, Portland Cement

 M 295, Coal Fly Ash and Raw or Calcined Natural Pozzolan for Use in Concrete

 M 303, Lime for Asphalt Mixtures

 M 316, Polymer-Modified Emulsified Asphalt

 MP 28, Materials for Microsurfacing

2.2. ANSI Standard:

 NSF/ANSI 60-2013, Drinking Water Treatment Chemicals-Health Effects

2.3. ISSA Standards:

 ISSA TB 100, Test Method for Wet Track Abrasion of Slurry Surfacing Systems

 ISSA TB 109, Test Method for Measurement of Excess Asphalt in Bituminous Mixtures by

Use of a Loaded Wheel Tester and Sand Adhesion

 ISSA TB 113, Test Method for Determining Mix Time for Slurry Surfacing Systems

 ISSA TB 114, Test Method for Wet Stripping of Cured Slurry Surfacing Mixtures

 ISSA TB 139, Test Method to Determine Set and Cure Development of Slurry Surfacing

Systems by Cohesion Tester

 ISSA TB 144, Test Method for Classification of Aggregate Filler-Bitumen Compatibility by

Schulze-Breuer and Ruck Procedures

 ISSA TB 147, Test Method for Measurement of Stability and Resistance to Compaction,

Vertical and Lateral Displacement of Multilayered Fine Aggregate Cold Mixes

Accessed by account: University of Michigan | Date: Sun Jan 17 14:18:26 2021 | IP address: 141.213.172.10

TS-5b PP 83-2 AASHTO

3. SIGNIFICANCE AND USE

3.1. The procedure described in this standard practice is used to produce a microsurfacing job-mix

formula.

4. EVALUATION OF MATERIALS

4.1. Evaluate the aggregate in accordance with the requirements of MP 28.

4.2. Evaluate the emulsified asphalt in accordance with the requirements for CQS-1P or CQS-1hP in

M 316.

4.3. Evaluate the mineral filler in accordance with M 85 for cement, M 295 for fly ash, M 303 for lime,

and NSF/ANSI 60 for aluminum sulfate.

4.4. Water shall be free of harmful salts and contaminants. If the quality of the water is in question, it

should be submitted to the mix design laboratory for analysis along with the other raw materials to

be used in the mix design.

5. DESIGN PROCESS

5.1. Evaluate mix formulations for system performance using the tests, methods, and requirements

outlined in Table 1.

Table 1—Evaluation of Microsurfacing System Performance

Test

ISSA

Technical

Bulletin Requirement

Mix Time @ 77°F (25°C)

TB 113

Controllable to 120 s, min

Wet Cohesion

TB 139

@ 30 minutes (Set)

12 kg-cm, min

@ 60 minutes (Traffic)

20 kg-cm or Near Spin, min

Wet Stripping

TB 114

Pass (90% min)

Wet-Track Abrasion Loss

TB 100

1-h Soak

538 g/m2 (50 g/ft2), max

6-day Soak

807 g/m2 (75 g/ft2), max

Lateral Displacement

TB 147

5%, max

Excess Asphalt by LWT Sand Adhesion

TB 109

538 g/m2 (50 g/ft2), max

Saturated Abrasion Loss

TB 144

1.0 g, max

6. DETERMINING MIX TIME

6.1. Determine mix time in accordance with ISSA TB 113 and the requirements of Table 1.

Emulsified asphalt percentages should result in mixture residual binder contents of 5.5 to

10.5 percent of mixture residual binder content.

7. DETERMINING SET AND CURE CHARACTERISTICS (TRAFFIC

READINESS)

7.1. Determine initial set and cure development characteristics in accordance with ISSA TB 139 and

the requirements of Table 1.

Accessed by account: University of Michigan | Date: Sun Jan 17 14:18:26 2021 | IP address: 141.213.172.10

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摘要：

This document specifies the AASHTO PP83_16_2020 standard practice, which outlines the procedures for evaluating and verifying the quality of materials used in highway construction and maintenance. It provides guidance on sampling, testing, and accept

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