SECTION 02786
PAVEMENT SEALING SPECIFICATION
PART 1 GENERAL
1.01 SECTION INCLUDES
A. Engineered resin emulsion sealcoat slurry over new, and or aged asphaltic
concrete paving.
1.02 RELATED SECTIONS
A. [ Section 02740 Asphaltic Concrete Paving ]
B. [ Section 02765 Pavement Marking ]
C. [ Section 02950 Repairing Asphaltic Concrete Pavements ]
D. [ Section 02975 Crack Sealing ]
1.03 REFERENCES
A. American Society for Testing and Materials (ASTM)
1. C 136 Method of Sieve Analysis of Fine and Coarse Aggregates
2. D 2939 Method for Testing Emulsified Bitumens used as Protective
Coatings
3. D 244 Standard Specification for Emulsified Asphalt
4. D 3910 Practices for Design, Testing, and Construction of Slurry
seal
1.04 SYSTEM DESCRIPTION
A. Provide two applications of the coating ( emulsion slurry) in all areas.
[B. Provide third coat in high traffic areas as shown in schedule and on
drawings.]
1.05 SUBMITTALS
A. Product Data
1. Submit manufacturer's printed Product Data Sheet.
1.06 QUALITY ASSURANCE
A. Certification
1. Submit letter from manufacturer stating applicator is their certified
applicator.
B. Certificate of Authenticity
1. Submit a certificate executed by the manufacturer of the sealer stating
the specific product was placed on the pavement.
1.07 PROJECT/SITE CONDITIONS
A. ENVIRONMENTAL REQUIREMENTS
1. Apply coating when pavement temperature is a least fifty (50) degrees
F. and air temperature is fifty
(50) degrees F. and rising.
2. Apply coating during dry weather and when rain is not anticipated
within eight (8) hours after application is completed.
1.08 WARRANTY
A. Prior to final payment, submit two (2) year written dual warranty by
materials manufacturer and contractor.
B. Warranty will include statements that warrant performance of the coating
against flaking, chipping, loss of adhesion or other abnormal wear.
C. In the event of abnormal wear within the warranty period manufacturer
will supply material and contractor will
recoat with specified material to the affected area at no cost to the owner.
PART 2 PRODUCTS
2.01 MANUFACTURER
A. Neyra Industries, Inc., Cincinnati, Ohio. Jennite®
1. Materials are listed as a standard of quality.
B. No other material will be acceptable unless approved by
Architect/Engineer in writing ten (10) days prior to bid date.
2.02 MATERIALS
A. Sealer: Jennite®
1. A high solids refined mineral colloid emulsion containing hot blended
high molecular weight non-vulcanized polymer.
B. Crack Sealant: Thermo-Seal® PLS
1. Hot applied, elastomeric type crack sealant compatible with pavement
coating.
C. Pavement Primer: ( Priming is not required to obtain manufacturers warranty
but may be recommended depending on condition of pavement
1. Acrylic based primer compatible with pavement coating.
D. Oil Spot Primer: Neyra Oil Seal
1. Water based acrylic oil spot primer compatible with pavement coating.
E. Sand: As recommended in printed data sheets by sealer manufacturer.
1. Washed dry silica sand free of dust, trash, clay, organic materials or
other contaminants.
2. Gradation: To have an
American Foundry Society grain fineness number that is no less than fifty (50)
and no more than seventy (70), when tested in accordance with ASTM C 136.
F. Mixing Water
1. Potable and free from harmful soluble salts.
2. Temperature of the water: minimum fifty (50) degrees F.
2.03 EQUIPMENT
A. Use equipment that keeps the mixture homogeneous at all times and is
capable of applying required coating weights evenly over entire width of
application mechanism in order to provide a uniformly coated surface.
2.04 MIXES
A. Add six (6) pounds of sand to the emulsion and mix with power equipment
to a homogeneous condition. ( sand to be added after water)
B. Add water to the coating mix as required for application not to exceed
ten per cent of emulsion.
PART 3 EXECUTION
3.01 EXAMINATION
A. Inspect existing pavement surfaces for conditions and defects that will
adversely affect quality of work, and which cannot be put into an acceptable
condition through normal preparatory work as specified.
B. Do not place coating over unsound oil spots softened by fuel or oil. If this condition exists, notify Architect/Engineer/ owner.
C. Starting installation constitutes Contractor's acceptance of surface as
suitable for installation.
SPECIFIER SHOULD SELECT ONE OR BOTH SECTIONS UNDER PREPARATION BASED ON JOB
REQUIREMENTS. (AGED/NEW) PAVEMENT
3.02 PREPARATION - AGED PAVEMENT
[ A. Repairing Asphaltic Concrete Pavement: Repair areas shown in schedule according to Section 02950 ]
[ B. Crack Sealing: Apply crack sealant as detailed in Section 02975. ]
C. Cleaning
1. Clean pavement surface prior to applying coating.
D. Protection
1. Protect adjacent curbs, walks, fences, and other items from receiving coating.
E. Priming Oil Spots
1. Clean oil spots and treat with oil spot primer.
2. (If priming is required apply polyprime at a rate of .03-.06 gallons per square yard,as per Polyprime data sheet.)
3.03 PREPARATION - NEW PAVEMENT
A. Curing
1. Allow new asphalt to cure at least thirty (30) days before applying
pavement coating.
B. Cleaning
1. Clean pavement surface prior to applying primer coat and coating.
C. Protection
1. Protect adjacent curbs, walks, fences, and other items from receiving
primer and coating.
3.04 APPLICATION
A. Apply all coats uniformly at a rate of 0.14 - 0.17 gallons per square yard per coat using mixed diluted material.
B. Allow each coat to cure sufficiently to take traffic without scuffing.
C. Allow final coat to cure a minimum of twenty four (24) hours under good
drying conditions before allowing traffic.
3.05 CLEANING AFTER APPLICATION
A. Remove the coating from surfaces other than those requiring coating.
3.06 PROTECTION
A. Barricade coated areas until the coating has dried sufficiently for
traffic.
3.08 SCHEDULE
