Table of Contents
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Front Matter	i-ix
Summary	1-5	(skim)
Chip Seals as a Tool for Preventive Maintenance	6-8	(skim)
Regional Context	9-9	(skim)
Chip Seal - Art or Science?	10-10	(skim)
Chip Seal Terminology	11-11	(skim)
Chip Seal Design Methods	12-13	(skim)
Chip Seal Design Practices	14-17	(skim)
Chip Seal Design Conclusions and Best Practices	18-18	(skim)
Contract Management	19-20	(skim)
Risk and Warranties	21-21	(skim)
Contract Risk	22-22	(skim)
Warranties	23-23	(skim)
Contract Administration Conclusions and Best Practices	24-24	(skim)
Aggregate Selection	25-27	(skim)
Binder Selection	28-29	(skim)
Material Selection Conclusions and Best Practices	30-31	(skim)
Binder Distributor	32-33	(skim)
Aggregate (Chip) Spreader	34-34	(skim)
Rollers	35-35	(skim)
Unique Equipment	36-37	(skim)
Equipment Conclusions and Best Practices	38-38	(skim)
Weather	39-39	(skim)
Road Preparation	40-40	(skim)
Spraying Operations	41-42	(skim)
Aggregate Spreading	43-43	(skim)
Rolling Operations	44-46	(skim)
Sweeping and Brooming	47-47	(skim)
Construction Practices for High-Volume Traffic	48-48	(skim)
Quality Assurance and Quality Control	49-49	(skim)
Field Testing	50-52	(skim)
Construction Conclusions and Best Practices	53-54	(skim)
Engineering-Based Performance Indicators	55-55	(skim)
Qualitative Performance Indicators	56-58	(skim)
Performance Conclusions and Best Practices	59-59	(skim)
Common Characteristics of Excellent Chip Seal Programs	60-60	(skim)
Case Study Conclusions and Best Practices	61-63	(skim)
Suggestions for Future Research	64-65	(skim)
References	66-68	(skim)
Bibliography	69-69	(skim)
Glossary	70-72	(skim)
Appendix A - Chip Seal Synthesis Questionnaire	73-83	(skim)
Appendix B - Survey Responses	84-99	(skim)
Appendix C - Chip Seal Design Details	100-108	(skim)
Appendix D - Innovative Chip Seal Case Studies	109-110	(skim)
Abbreviations used without definitions in TRB publications	111-111	(skim)

Description

TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 342: Chip Seal Best Practices examines ways to assist in the development and implementation of pavement preservation programs by identifying the benefits of using chip seal as part of a preventive maintenance program and by highlighting advanced chip seal programs in use around the world. The report includes approximately 40 best practices in the areas of chip seal design methods, contract administration, equipment practices, construction practices, and performance measures. According to the report, the increased use of chip seals for maintenance can be a successful, cost-effective way of using preventive maintenance to preserve both low-volume and higher-volume pavements.

NCHRP Synthesis 342:

Chip Seal Best Practices

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