Curing Practices for Concrete Pavements (2023)

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85   State DOT Specifications/ Special Provisions A P P E N D I X C Specification Agency 24 hr Limit* kg/m2 (lbs/sf) 72 hr Limit* kg/m2 (lbs/sf) Reflectance* Application Rate (sf/gal) Min VOC Comment AASHTO M148/ASTM C309; Class A, Type 2 N/A 0.55 (0.113) >60% 200 100°F ± 2°F; 32% ± 2% rh Virginia DOT 0.20 (0.040) 0.30 (0.061) >60% 100 No waxed based cc allowed; test at 50% rh; Type II cc only Maine DOT Kansas DOT 150 Type II cc Wisconsin DOT 0.15 (0.031) 0.40 (0.082) >65% (@ 72 hrs) 150 for tined surfaces; 200 for all others <350g/L Resin-based ASTM C309 Class B – PAMS; allow alternative curing methods North Dakota DOT 0.15 (0.031) 0.40 (0.082) >65% 150 Final cure within 30 min of screeding; cure for 5 days; use fogging for rapid drying; 42% solids; VOC < 350g/L Texas DOT 0.55 (0.113) >60% 180 in 2 coats Also have % solids, density, viscosity, and sag requirements Tennessee DOT Per manufacture’s recommendation Montana DOT 150 Equal to a white sheet of typing paper New York DOT 0.04 gms/cm2 (after 3 days) >60% 150 in 2 directional passes Cure 5 min after texturing; 7 days wet burlap req’d for BCO construction. Min exposure time 30 m North Carolina DOT 150 Hand spraying 100 sf/gal; min exposure time 30 m Nevada DOT 0.55 (0.113) >60% 150 CC must be stirred; Maryland DOT 0.55 (0.113) >60% 400 in 2 applications Iowa DOT 0.20 (0.040) 0.40 (0.082) 135 (field) 200 (lab) West Virginia DOT 0.55 (0.113) >60% 150 (burlap drag finish) 125 (grove finish) Curing rates are doubled for UCOLs; during placement, if the evaporation rate exceeds 0.10 lb./sq. ft. per hour, measures (i.e., wind breaks, fogging, etc.) must be taken to reduce the rate

86 Curing Practices for Concrete Pavements Specification Agency 24 hr Limit* kg/m2 (lbs/sf) 72 hr Limit* kg/m2 (lbs/sf) Reflectance* Application Rate (sf/gal) Min VOC Comment Minnesota DOT 0.15 (0.031) 0.40 (0.082) >60% 200 350 g/L Resin-based ASTM C 309 Class B – PAMS Arizona DOT 0.55 (0.113) >60% 100 25% Fogging when temperatures are above 85°F; Washington DOT 0.42 (0.086) 150 (field) 190 (lab) Wyoming DOT 0.30 (0.06) >60% 150 350 g/L Resin-based ASTM C309 Class B – PAMS Utah DOT 0.55 (0.113) >60% 100 Pennsylvania DOT 0.40 (0.082 >60% 200 & 150 2.9 lb/gal Resin-based ASTM C309 Class B – PAMS Alabama DOT 0.55 (0.113) >60% 135 (in 2 applications) Missouri DOT 0.55 (0.113) >60% 200 Caltrans 0.15 (0.031) 0.55 (0.113) >60% 150 Ohio DOT 0.15 (0.031) 0.40 (0.082) >65% 150 Indiana DOT 0.15 (0.031) 0.40 (0.082) >65% 150 (in 2 applications) 350 g/L Wax (Class A) and resin- based (Class B – PAMS) South Carolina DOT 0.55 (0.113) >60% 100 150 (min) Wax (Class A) and resin- based (Class B) Colorado DOT 0.55 (0.113) >60% 180 (in 2 applications) Alternatively, AR of 120 sf/gal if in one application Louisiana DOT 0.55 (0.113) >60% 100 Illinois DOT 0.55 (0.113) >60% Wax (Class A) and resin- based (Class B) Mississippi DOT 0.55 (0.113) >60% 120 Delaware DOT 0.55 (0.113) >60% 200 (in 2 applications) Wax-based material must pass a chloride screen test using NCHRP 244 Series IV (1 application @ 125 ft2 /gal) min 90% Oregon DOT 0.55 (0.113) >60% 150 Wax- (Class A) and resin- based (Class B) South Dakota DOT 0.55 (0.113) >60% 150 (for carpet drag) 124 (for tined surfaces) Hawaii DOT 0.55 (0.113) >60% 100 AASHTO M 148, Type 2 Oklahoma DOT 0.55 (0.113) >60% 150 ASTM C309; Type II Nebraska DOT 0.55 (0.113) >60% 135 (for tined surface) 200 (for all others) 2 coats are allowed *Note: Itemized data pertain to ASTM C309 Class B – PAMS if it is specified; otherwise pertain to ASTM C309 Class A, Type 2 compound.

Abbreviations and acronyms used without denitions in TRB publications: A4A Airlines for America AAAE American Association of Airport Executives AASHO American Association of State Highway Officials AASHTO American Association of State Highway and Transportation Officials ACI–NA Airports Council International–North America ACRP Airport Cooperative Research Program ADA Americans with Disabilities Act APTA American Public Transportation Association ASCE American Society of Civil Engineers ASME American Society of Mechanical Engineers ASTM American Society for Testing and Materials ATA American Trucking Associations CTAA Community Transportation Association of America CTBSSP Commercial Truck and Bus Safety Synthesis Program DHS Department of Homeland Security DOE Department of Energy EPA Environmental Protection Agency FAA Federal Aviation Administration FAST Fixing America’s Surface Transportation Act (2015) FHWA Federal Highway Administration FMCSA Federal Motor Carrier Safety Administration FRA Federal Railroad Administration FTA Federal Transit Administration GHSA Governors Highway Safety Association HMCRP Hazardous Materials Cooperative Research Program IEEE Institute of Electrical and Electronics Engineers ISTEA Intermodal Surface Transportation Efficiency Act of 1991 ITE Institute of Transportation Engineers MAP-21 Moving Ahead for Progress in the 21st Century Act (2012) NASA National Aeronautics and Space Administration NASAO National Association of State Aviation Officials NCFRP National Cooperative Freight Research Program NCHRP National Cooperative Highway Research Program NHTSA National Highway Traffic Safety Administration NTSB National Transportation Safety Board PHMSA Pipeline and Hazardous Materials Safety Administration RITA Research and Innovative Technology Administration SAE Society of Automotive Engineers SAFETEA-LU Safe, Accountable, Flexible, Efficient Transportation Equity Act: A Legacy for Users (2005) TCRP Transit Cooperative Research Program TEA-21 Transportation Equity Act for the 21st Century (1998) TRB Transportation Research Board TSA Transportation Security Administration U.S. DOT United States Department of Transportation

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