Pavement Preservation Overband Crack Seal ODOT Spec #423 Fog Seal - PowerPoint PPT Presentation

Pavement Preservation Overband Crack Seal – ODOT Spec #423 Fog Seal – ODOT “Special Provision” Onyx – ODOT “Special Provision” Chip Seal – ODOT Spec #422 Micro Surfacing – ODOT Spec #421

Overband Crack Seal – ODOT Spec #423

Overband Crack Seal Type 1 – “BLOCKED” with 18% Rubber • Routing and “Filling” Type 2 – “LIQUID” with 5% Polyester Type 3 – “LIQUID” with 7% Polypropylene Type 4 – “BLOCKED” with 2% Polyester

Overband Crack Seal Temperature - 45 degrees and rising Width of Crack – 1/4” – 1” Product Thickness – 1/16” – 1/8” Bandwidth - 5” disc installs 4” wide product Pay Item – Pound or Square Yard

Overband Crack Seal - Blocked 5,000 lbs. / day @ 7 ft. / lb. .

Overband Crack Seal - Liquid 7,000 lbs. / day @ 5 ft. / lb. .

Overband Crack Seal - Bad

Overband Crack Seal - Optimum

Overband Crack Seal City of Columbus, OH

Overband Crack Seal When: 2-4 years after new pavement is installed Result: Additional 5 years Pavement Service Life

Fog Seal – ODOT “Special Provision” “ Green Grass and Black Roads”

Fog Seal Inexpensive Asphalt Emulsion • Diluted 50% with Water Shot at .1 to .12 gallons / sy “Locks Down” Chip Seals Not Intended for Asphalt Surfaces Pay Item - Square Yard

Fog Seal 3 Main Concerns Dry Time – Multiple Hours Loss of Friction - Slick Service Life – +/- 1 year

Fog Seal

Fog Seal Caesar Creek State Park, OH

Onyx – Frictional Mastic Surface Treatment

Onyx Components • Cationic Polymer Modified Asphalt Emulsion – .25 gallons / sy – Double Application – Both Directions in Each Lane • Quality “Fine” Aggregate – Silica • Dark Color Enhancers • Breaking and Setting Additives - Catalysts

Onyx Addressing 3 Main Concerns Dry Time – 30 to 60 Minutes Loss of Friction – Aggregate Inclusion Service Life – 3 to 4 Years

Excellent Price Point Fills Pavement Cycle Need Fog Seal Chip Seal Micro Ultra Thin Stand: HMA $0.40-$0.75 $1.50-$2.25 $2.50-$3.25 $4.00-$4.75 $5.25-$7.00 Onyx $1.00-1.25 *Prices based on Square Yard

Onyx - Equipment

Onyx – Side Panel Protection

Onyx - Handwork

Onyx - Applications State, County and Townships High-Volume Priority Shoulders • • Low-Volume General Mainline Chip Seal “Seal” • Local • Low to Medium Volume Residential Streets • Parks and Cemeteries • Large Commercial Parking Lots

State, County and Township Roads – “Before”

State, County and Township Roads – “After”

Local Residential – “Before”

Local Residential – “During”

Local Residential – “After”

National, State and Local Parks – “Before”

National, State and Local Parks – “After”

Chip Seal – ODOT Spec #422

Chip Seal Polymerized Asphalt Emulsion .37 - .42 gallons/sy Anionic – Neg. (-)Charge RS-2 RS-2P HFRS-2P Cationic – Pos. (+) Charge CRS-2 CRS-2P SAM-C

Chip Seal Cover Aggregate #9 or ¼” #8 or ½” Limestone - Porous Slag - Durable Natural Gravel – Economical

Chip Seal Two 9-Wheel Rubber Tire Rollers

Chip Seal – “Little Known Spec Facts” • May 1 st to September 1 st – 1 month to cure emulsion • 50% stone embedment • 150 ft. – distributor to chipper • 2 roller passes - 3 is ideal

Chip Seal Historical Issues • Dust • Loose Stone • Delamination • Short Life Expectancy

Chip Seal Present Solutions • Fog Seal / “Onyx” • Line Striping Removal • Material Compatibility • Polymerization

Micro Surfacing – ODOT Spec #421

Micro Surfacing Polymerized Asphalt Emulsion • Natural Latex • Limestone Aggregate • 3/8” to P200’s • Breaking and Setting Additives • Chemical Break and Cure • Portland Cement • Cohesiveness •

Micro Surfacing

Micro Surfacing

Micro Surfacing Truck Mount Unit

Micro Surfacing Continuous Unit

Micro Surfacing – Features and Benefits • Surface Friction Correction • Rut Fill – Cross Slope Correction • Arrest Oxidation / Minor Raveling • Fast Installation and Cure Time • No Berm Material Required • ½ the cost of 1 ½” of asphalt

Micro Surfacing – Surface Prep • Quality Patching and Crack Sealing • Remove Plastic Markings • Remove Grass and Vegetation • Cover All Structures • Tack Coat - Option

Micro Surfacing – Protecting Structures

Micro Surfacing – Surface Course • Single Course – 18 lbs. /sy • Heavy Single Course – 20 to 24 lbs. / sy • Pay Item – Square Yard

Micro Surfacing – Double Course • Level – 14 lbs. / sy • Surface - 16 lbs. / sy • Pay Item – Square Yard

Micro Surfacing Good Candidates: • 5-8 Years Old • Oxidized • Minor Raveling • Minor Rutting • Good Sub Base • Cracks Treated

Good Micro Surfacing Candidate

Overband Crack Seal Micro Surfacing – Surface Course

Polymerized Chip Seal Micro Surfacing – Surface Course

Base Course Asphalt Micro Surfacing – Surface Course (Tack Coat)

Micro Surfacing – Quality Control • Alignment of each paving pass • Surface Texture • Properly constructed paving joints • Uniform finish of hand work

Micro Surfacing – Quality Control • Alignment of each paving pass • Surface Texture • Properly constructed joints • Uniform finish of hand work

Micro Surfacing – Quality Control • Alignment of each Paving Pass • Surface Texture • Properly Constructed Joints • Transversely • Good Quality Hand Work

Micro Surfacing – Quality Control • Alignment of each paving pass • Surface Texture • Properly constructed joints • Longitudinally • Uniform finish of hand work

Micro Surfacing – Quality Control • Alignment of each paving pass • Surface Texture • Properly constructed joints • Uniform finish of hand work

Micro Surfacing – Quality Control • Alignment of each paving pass • Surface Texture • Properly constructed joints • Uniform finish of hand work

Micro Surfacing ODOT – District 3 I-71

Micro Surfacing ODOT – District 6 SR 35

Micro Surfacing Delaware County Engineer, OH

Micro Surfacing Erie County Engineer, OH

Micro Surfacing City of Loveland, OH

Micro Surfacing City of Wooster, OH

Micro Surfacing – Black Aggregate • Ontario Trap Rock - 50% of mix • Improves Surface Friction • Keeps Pavement Darker Longer • Better Line Delineation - Safety • Helps Melting of Snow (Less Salt)

Micro Surfacing – Ontario Traprock Anderson Township, Hamilton County, OH

Micro Surfacing – Ontario Traprock Cowan Lake State Park, OH

ODOT Pavement Preservation Study 2010 Chip Seal and Micro Surfacing Study Thin HMA (< 1 ½”) $66,358/lm 9 Years Micro (4 Lane) $26,350/lm 8 Years Micro (2 Lane) $17,450/lm 9 Years Chip Seal $11,500/lm 3-5 Years