RFI 610-24-508.pdf

Request for Informa on (RFI) Received:

Ques on: The Drawings do not have any informa on on crack sealing. To get a accurate bid we need to know how many lineal feet of cracks that need to be repaired so everybody has an equal bid turned in. If not some could have 1000 if figured or some could have 2000 if figured not giving the contractors equal quotes. Please verify how many lineal feet of cracks need repaired.

Answer: Provide Asphalt Sealcoating & Line Striping, Marion Campus Project No.

610-24-508 08/16/2023 32 17 23 - 1

SECTION 32 01 17.61

CRACK AND JOINT SEALING FOR ASPHALT PAVEMENTS

PART 1 - GENERAL

1.1 SECTION INCLUDES

1. Elastomeric hot applied crack and joint sealing in asphalt or Portland cement concrete.

1.2 RELATED REQUIREMENTS

A. Asphalt Paving: Section 32 12 16 B. Paint Color: Section 09 06 00, SCHEDULE FOR FINISHES.

C. Pavement Markings: Section 32 17 23

1.3 APPLICABLE PUBLICATIONS

A. Comply with references to extent specified in this section.

B. American Society for Testing and Materials (ASTM)

1. D6690-01 Specification for hot applied crack and joint sealant.

2. 1190 Specification for Concrete Joint Sealant, Hot applied Elastic Type.

3. D3405 Specification for Joint Sealants, Hot Applied, for Concrete and Asphalt.

4. D5329 Test Methods for Sealants and Fillers, Hot Applied for Joints and Cracks in Asphalt and Portland Cement Concrete Pavements.

1.4 SUBMITTALS

A. Submittal Procedures: Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA, AND

SAMPLES.

B. Manufacturer's Literature and Data:

1. Description of each product.

2. Application instructions.

C. Certificates: Certify products comply with specifications.

D. Qualifications: Substantiate qualifications comply with specifications.

1. Installer with project experience list.

1.5 QUALITY ASSURANCE

A. Installer Qualifications:

1. Regularly installs specified products.

2. Installed specified products with satisfactory service on five similar installations for minimum five years.

a. Project Experience List: Provide contact names and addresses for completed projects.

Provide Asphalt Sealcoating & Line Striping, Marion Campus Project No. 610- 24-508 08/16/2023 32 17 23 - 2 B. Certification

1. Contractor to submit letter stating that equipment used to heat the material meets requirements of this specification.

2. Provide MSDS (Material Safety Data Sheets) for all chemicals used on ground.

C. Test Reports

1. Upon request the contractor will submit manufacturer’s test results on products used.

1.6 FIELD CONDITIONS

A. Environment:

1. Product Temperature: Minimum 13 degrees C (55 degrees F) for minimum 48 hours before installation.

2. Apply during dry weather and when rain is not anticipated within (8) hours after application is completed.

1.7 EXISTING CONDITIONS

A. Cracks and joints under one quarter (1/4) inch width 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.

1.8 WARRANTY

A. Construction Warranty: FAR clause 52.246-21, "Warranty of Construction."

PART 2 - PRODUCTS

2.1 SYSTEM PERFORMANCE

A. Design by complying with specified performance:

2.2 PRODUCTS – MATERIALS

A. Elastomeric materials shall conform to the requirements of the following and other appropriate sections of the latest version of the State Highway Material Specifications, including amendments, addenda and errata. Where the term "Engineer" or "Commission" is referenced in the State Highway Specifications, it shall mean the VA Resident Engineer or VA Contracting Officer.

B. A hot applied elastomeric crack/joint sealant for asphalt and concrete pavements.

32 17 23 - 3

2.3 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

3.1 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.

3.2 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.

C. Examine and verify substrate suitability for product installation.

D. Protect existing construction and completed work from damage.

E. Clean substrates. Remove contaminants capable of affecting subsequently installed product's performance.

1. Remove dust, dirt, and other granular surface deposits by sweeping, blowing with compressed air, rinsing with water, or combination of these methods.

2. Completely remove rubber deposits, existing paint markings, and other coatings adhering to pavement with scrapers, wire brushings, 32 17 23 - 4 sandblasting, mechanical abrasion, or approved chemicals as directed by Contracting Officer's Representative.

3. As an option, comply with Fed. Spec. TT-P-1952 for removal of existing paint markings on asphalt pavement. Apply black paint in as many coats as necessary to completely obliterate existing markings.

4. Scrub affected areas with several applications of trisodium phosphate solution or other approved detergent or degreaser, and rinse thoroughly after each application, Where oil or grease are present on old pavements to be marked, .

3.3 APPLICATION – GENERAL

A. Install heated sealant directly into cracks and joints not to exceed a four (4) inch wide band.

B. Control thickness to one eight (1/8) inch above pavement surface.

C. Finished sealed cracks and joints will be uniformly level and all “sinkers” will refilled to achieve flush to one eighth (1/8) inch concave surface appearance.

D. Install products according to manufacturer's instructions and approved submittal drawings.

1. When manufacturer's instructions deviate from specifications, submit proposed resolution for Contracting Officer's Representative consideration.

3.4 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 or per manufacturer’s recommendation.

B. Failure to follow manufacture’s printed recommendations could result in a severe burn hazard.

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