00978422

Component

https://doi.org/10.3141/1866-03

http://scholar.google.com...ling&publication_year=2004

Thin maintenance surfaces (TMSs) provide an economical method of extending pavement life for asphaltic concrete or bituminous roads. Two phases of research were undertaken to demonstrate TMSs and establish guidelines for their use in Iowa. The project involved the construction and observation of multiple test sections on four rural U.S. highways in Iowa over a 3-year period. Average annual daily traffic on these highways ranged from approximately 1,000 to 5,000. Test sections included single and double chip seals with various types and sizes of aggregates and two types of binder: cationic emulsion and high-float emulsion. Test sections of microsurfacing, microsurfacing cape seal, and thin-lift hot-mix overlay were also placed. These TMS treatments were compared with control sections. Researchers designed the chip seal test sections, monitored the construction process, and collected quality-control information on materials. The pavement condition index (PCI) and skid resistance were measured and compared for each test section before and after construction. TMSs improved PCI when materials were selected properly and quality construction techniques were used. Success was achieved with chip seal that used graded cover aggregates and small cover aggregates and also with various thin-lift overlays. Difficulties were experienced with microsurfacing aggregates that had few fines. The results of the study reinforce the importance of selecting the right type of TMS, ensuring construction quality, and having favorable weather during and after construction.

This paper appears in Transportation Research Record No. 1866, Maintenance and Management of Pavement and Structures.

00978419

English

p. 20-27

2004

Transportation Research Record

0309094607

Figures (3) ; References (12) ; Tables (9)

Annual average daily traffic; Asphalt concrete pavements; Before and after studies; Bituminous pavements; Chip seals; Condition surveys; Pavement maintenance; Rural highways; Skid resistance; Test sections

Microsurfacing; Surface treatment (Pavements); Thin-lift overlays

Iowa

Highways; Maintenance and Preservation; I61: Equipment and Maintenance Methods

TRIS, TRB, ATRI

Sep 9 2004 12:00AM

• ANALYSIS OF PAST NATIONAL BRIDGE INVENTORY RATINGS FOR PREDICTING BRIDGE SYSTEM PRESERVATION NEEDS
• BRIDGE DECK MANAGEMENT SYSTEM WITH INTEGRATED LIFE-CYCLE COST OPTIMIZATION
• BRIDGE LIFE-CYCLE COSTING IN INTEGRATED ENVIRONMENT OF DESIGN, RATING, AND MANAGEMENT
• DETERMINING LIFE EXPECTANCY OF PREVENTIVE MAINTENANCE FIXES FOR ASPHALT-SURFACED PAVEMENTS
• DEVELOPMENT OF PREVENTIVE MAINTENANCE DECISION TREES BASED ON COST-EFFECTIVENESS ANALYSIS: AN ONTARIO CASE STUDY
• INVENTORY SYSTEM FOR RETAINING WALLS AND SOUND BARRIERS
• JOINT SEALANT AND STRUCTURAL PERFORMANCE AT THE OHIO ROUTE 50 TEST PAVEMENT
• OVERLAY TYPES USED AS PREVENTIVE MAINTENANCE ON TENNESSEE BRIDGE DECKS
• PERFORMANCE EVALUATION SYSTEM FOR MAIN REINFORCED CONCRETE GIRDERS OF EXISTING BRIDGES
• RELATIVE EFFECTS OF SODIUM CHLORIDE AND MAGNESIUM CHLORIDE ON REINFORCED CONCRETE: STATE OF THE ART