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The National Academies

NCHRP 20-44(26) [Active]

Implementing Guide Specifications for the Construction of Chip Seals, Micro Surfacing, and Fog Seals

  Project Data
Funds: $200,000
Staff Responsibility: Edward T. Harrigan
Research Agency: National Center for Pavement Preservation
Principal Investigator: Larry Galehouse
Effective Date: 9/24/2020
Completion Date: 9/23/2023

BACKGROUND

The guide specifications for construction of chip seals, micro surfacing, and fog seals produced in NCHRP Project 14-37, Guide Specifications for the Construction of Chip Seals and Microsurfacing, have been submitted to the AASHTO Committee on Materials and Pavements (COMP) for balloting and approval. These construction guide specifications complement material and design specifications developed through the AASHTO TSP·2 Emulsion Task Force (ETF). These specifications, which are necessary and essential for construction contract documents, are now AASHTO provisional standards:

·       MP 27-16 Standard Specification for Materials for Emulsified Asphalt Chip Seals

·       PP 82-16 Provisional Standard Practice for Emulsified Asphalt Chip Seal Design

·       MP 28-17 Standard Specification for Materials for Micro Surfacing

·       PP 83-16 Provisional Standard Practice for Micro Surfacing Design

·       MP 33-17 Standard Specification for Materials for Emulsified Asphalt Fog Seal

·       PP 88-17 Standard Practice for Emulsified Asphalt Fog Seal Design

OBJECTIVE

The objective of this project is to facilitate the adoption by AASHTO of the guide specifications for construction of chip seals, micro surfacing, and fog seals produced in NCHRP Project 14-37 through a series of phased activities in four areas: information dissemination, outreach, training, and demonstration.

STATUS

Implementation activities are in progress.

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