AASHTO PP87_20

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Standard Practice for

Slurry Seal Design

AASHTO Designation: PP 87-201

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 14:19:50 2021 | IP address: 141.213.172.10

TS-5b PP 87-1 AASHTO

Standard Practice for

Slurry Seal Design

AASHTO Designation: PP 87-201

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 emulsified asphalt, mineral aggregate, water, mineral filler, and additives to

produce a slurry seal job-mix formula.

2. REFERENCED DOCUMENTS

2.1. AASHTO Standards:

 M 17, Mineral Filler for Bituminous Paving Mixtures

 M 85, Portland Cement

 M 208, Cationic Emulsified Asphalt

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

 M 303, Lime for Asphalt Mixtures

 MP 32, Materials for Slurry Seal

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 106, Measurement of Slurry Seal Consistency

 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

3. SIGNIFICANCE AND USE

3.1. The procedure described in this standard practice is used to evaluate a slurry seal job-mix formula.

Accessed by account: University of Michigan | Date: Sun Jan 17 14:19:50 2021 | IP address: 141.213.172.10

TS-5b PP 87-2 AASHTO

4. EVALUATION OF MATERIALS

4.1. Evaluate the aggregate in accordance with MP 32.

4.2. Evaluate the emulsified asphalt in accordance with the requirements for CQS-1h in M 208.

4.3. Evaluate the mineral filler in accordance with M 17 for bituminous mineral filler, 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 Slurry Seal Performance

Test

ISSA

Technical

Bulletin Requirement

Mix Time @ 25°C (77°F)

TB 113

Controllable to 180 s, min

Slurry Seal Consistency

TB 106

2.0-3.0 cm (0.79-1.18 in.)

Wet Cohesion (for quick traffic systems)

TB 139

@ 30 min (Set)

12 kg-cm, min

@ 60 min (Traffic)

20 kg-cm or Near Spin, min

Wet Stripping

TB 114

Pass (90% min)

Wet-Track Abrasion Loss

TB 100

1-h Soak

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

Excess Asphalt by LWT Sand Adhesion

TB 109

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

6. DETERMINING MIX TIME

6.1. Determine the 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 13.5

percent.

7. DETERMINING SLURRY SEAL CONSISTENCY

7.1. Determine the mixture consistency in accordance with ISSA TB 106 and the requirements of

Table 1.

8. DETERMINING SET AND CURE CHARACTERISTICS (TRAFFIC

READINESS)

8.1. Determine the 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 14:19:50 2021 | IP address: 141.213.172.10

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摘要：

AASHTO PP87-20 是由美国国家公路与运输官员协会（AASHTO）发布的标准规范，全称为《桥梁混凝土桥面板防水膜系统施工标准规范》。该标准于2020年更新，为桥梁混凝土桥面板的防水膜系统施工提供了全面的技术指导与质量控制要求。内容涵盖材料性能、表面处理、施工工艺、检验方法以及验收标准，旨在有效防止水分和氯离子渗透，延长桥梁结构的使用寿命并降低维护成本。本规范适用于新建及既有桥梁的防水系统施工，是交通工程、桥梁养护及土木工程领域专业人士必备的参考文件。

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