A. [ Section 02740 Asphaltic Concrete Paving ]
B. [ Section 02765 Pavement Marking ]
C. [ Section 02785 Pavement Sealing ]
D. [ Section 02950 Repairing Asphaltic Concrete Pavements ]
E. [ ]
1.03 REFERENCES
A. American Society for Testing and Materials (ASTM)
1. D 1190 Specification for Concrete Joint Sealant, Hot Applied Elastic Type
2. D 3405 Specification for Joint Sealants, Hot Applied, for Concrete and Asphalt
3. D 5329 Test Methods for Sealants and Fillers, Hot Applied, for Joints and Cracks in
Asphaltic and Portland Cement Concrete Pavements
1.04 SYSTEM DESCRIPTION
A. Provide installation of sealant.
1.05. SUBMITTALS
A. Product Data
1. Submit manufacturer's printed Product Data Sheet.
1.06 QUALITY ASSURANCE
A. Certification
1. Contractor to submit a letter stating that equipment used to heat the material meets
requirements of this specification.
B. Test Reports
1. Upon request the contractor will submit manufacturer's test results on products
used.
1.07 PROJECT/SITE CONDITIONS
A. ENVIRONMENTAL REQUIREMENTS
1. Apply sealant only to clean, dry, properly prepared cracks and joints.
2. At ambient temperatures below forty (40) degrees F. use a hot compressed air lance
to achieve clean, dry, warm space for sealant installation.
1.08 EXISTING CONDITIONS
A. Cracks and joints under one quarter (1/4) inch width are not covered under this
specification unless stipulated in writing by Architect/Engineer.
B. Cracks and joints under one quarter (1/4) inch are to be addressed by means of
routing and/or the use of a hot compressed air jet to remove all loose materials and
assure the sidewalls of cracks are clean and dry.
PART 2 PRODUCTS
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THE SPECIFIER MAY CHOOSE TO HAVE A CLOSED PROPRIETARY SPECIFICATION [ B ] OR AN OPEN
PROPRIETARY SPECIFICATION [ C ] BY SELECTING ONE OF THE FOLLOWING:
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2.01 MANUFACTURER
A. Neyra Industries, Inc., Cincinnati, Ohio: Thermo-Seal PLS, Thermo-Seal Spec Plus
3405
1. Materials are listed as a standard of quality.
[ B. No substitutions allowed. ]
[ C. No other material will be acceptable unless approved by Architect/Engineer in
writing ten (10) days prior to bid date. ]
2.02 MATERIALS
A. Sealant: Thermo-Seal PLS or Thermo-Seal Spec Plus 3405
1. A hot applied elastomeric crack/joint sealant for asphaltic and concrete pavements.
2.03 EQUIPMENT
A. Melt down the sealant in a kettle or melter constructed as a double boiler. The
space between the inner and outer shells filled with a high flash heat transfer oil or
other indirect heating means.
B. The kettle to be used must have constant agitation any time material is over three
hundred (300) degrees F. The kettle must have temperature monitoring capabilities.
C. Roofing kettles or other direct fired melters are not acceptable for these
materials.
PART 3 EXECUTION
3.01 EXAMINATION
A. Inspect existing pavement for conditions and defects that will adversely affect
quality of work and which cannot be put into acceptable condition through normal
preparatory work as specified.
B. Starting installation constitutes contractors acceptance of surface as suitable for
installation.
3.02 PREPARATION
A. Cracks
1. Remove vegetation and all incompressibles from cracks and joints by means of hot
compressed air lance.
2. Cracks and joints less than one quarter (1/4) inch in width must be routed to a
minimum one half (1/2) inch by one half (1/2) inch in shape.
B. Sealant
1. Prepare sealant in specified equipment.
2. Heat sealant according to manufacturer's Product Data Sheet.
3.03 APPLICATION
A. Install heated sealant directly into cracks and joints not to exceed a one (1) inch
wide band.
B. Control thickness to one eighth (1/8) inch above pavement surface.
C. Finished sealed cracks and joints will be uniformly level and all
"sinkers" will be refilled to achieve flush to one eighth (1/8) inch concave
surface appearance.
3.04 PROTECTION
A. Care must be taken to keep the public from work area while sealant is being
installed and traffic should not be allowed to cross sealant filled cracks and joints for
a period of ten (10) minutes.
B. Failure to follow manufacturer's printed recommendations could result in a severe
burn hazard.
3.05 SCHEDULE
END OF SECTION
