For the chip seal layer:
Before writing a specification for your chip seal project, review A165 Recommended Performance Guideline for Chip Seal provided by The International Slurry Surfacing Association (ISSA) . This resource will help in design, testing, quality control, measurement and payment procedures for your project.
For the slurry seal/micro surfacing layer:
Before writing a specification for your slurry seal/micro surfacing portion of the project, review the Recommended Performance Guideline for Emulsified Asphalt Slurry Seal (A105) and Recommended Performance Guideline for Micro Surfacing (A143)
provided by The International Slurry Surfacing Association (ISSA). This resource will help in design, testing, quality control, measurement and payment procedures for your project. It is important to understand the traffic level of the road to determine if a slurry seal or a micro murfacing application is best.
Note: It is important to keep in mind that ISSA includes recommended guidelines, not specifications. There are many important factors to consider after reviewing the A105, A143 and A165 and your project may demand different processes and measurements from the included guidelines.
For the chip seal section, here are the major components needed for a good specification:
For the slurry seal/micro surfacing application:
Screen the material immediately prior to loading the nurse truck/mobile support unit. This way, there is no possibility of contamination when re-handling the material.
Require a recalibration when material changes, conveyor seals and/or, emulsion pumps have been replaced.
Require the contractor to perform a calibration with the inspector on site, with the specific materials for the job. This step has a high potential for increasing the quality of the job.
The agency can provide early notification by website, newspapers, signs and/or door hangers. The contractor can notify by signs and/or door hangers the day before and the day of the application.
To increase the longevity of the cape seal, roll parking lots, cul-de-sacs, and other pavements that will not receive regular traffic.