Bituminous_Seal_Coats_32_12_36.23.pdf

FY18 LDPAV-AMEND2

SECTION TABLE OF CONTENTS

DIVISION 32 - EXTERIOR IMPROVEMENTS

SECTION 32 12 36.23

BITUMINOUS SEAL COATS

PART 1 GENERAL

1.1 REFERENCES

1.2 SUBMITTALS

1.3 EQUIPMENT

PART 2 PRODUCTS

2.1 CONTRACTOR MIX DESIGN

2.2 BITUMINOUS MATERIAL FOR SEAL COAT

2.3 AGGREGATE FOR SEAL COAT

2.4 BITUMINOUS MATERIAL FOR FOG SEAL

PART 3 EXECUTION

3.1 PREPARATION OF SURFACE

3.2 SEAL COAT APPLICATION

3.2.1 Application of Bituminous Material

3.2.2 Application of Aggregate

3.2.3 Application of Bituminous Material for Fog Seal

3.3 SWEEPING

3.4 DISPOSAL

3.5 QUALITY CONTROL

3.6 TESTING

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SECTION 32 12 36.23 Page 1 W912ES18B0015

SECTION 32 12 36.23

BITUMINOUS SEAL COATS

PART 1 GENERAL

This work consists of constructing a seal coat on a prepared surface as shown on the plans in accordance to MNDOT 2356, except as modified in this section.

1.1 REFERENCES

The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.

MINNESOTA DEPARTMENT OF TRANSPORTATION (MNDOT)

MNDOT (2018) Standard Specifications for Construction

ASTM INTERNATIONAL (ASTM)

ASTM C117 (2013) Standard Test Method for Materials Finer than 75-um (No. 200) Sieve in Mineral Aggregates by Washing

ASTM C136/C136M (2014) Standard Test Method for Sieve Analysis of Fine and Coarse Aggregates

ASTM C136/C136M (2014) Standard Test Method for Sieve Analysis of Fine and Coarse Aggregates

1.2 SUBMITTALS

Government approval is required for submittals with a "G" designation;

submittals not having a "G" designation are for Contractor Quality Control approval. When used, a designation following the "G" designation identifies the office that will review the submittal. Submit the following in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:

SD-01 Preconstruction Submittals

Contractor Mix Design; G

Equipment; FIO

Aggregate; G

Bituminous Material; G

SD-06 Test Reports

Testing; G

SECTION 32 12 36.23 Page 2 W912ES18B0015

SD-07 Certificates

Delivered Material Certification ; G

1.3 EQUIPMENT

Provide size, type, and manufacturer of Sprayer and Aggregate spreader to be used and a list of other equipment to be used for the seal coat operation.

PART 2 PRODUCTS

2.1 CONTRACTOR MIX DESIGN

Submit a mix design in accordance to MNDOT 2356, except as modified in this section. Include application rates for bituminous material and aggregates.

The combination of bituminous material and fog seal application rates shall be such that the aggregate is embedded to a depth of 70% of the nominal aggregate size in the bituminous materials.

2.2 BITUMINOUS MATERIAL FOR SEAL COAT

Provide bituminous emulsion in accordance to MNDOT 3151 meeting the requirements of CRS-2P.

2.3 AGGREGATE FOR SEAL COAT

Provide aggregate meeting he requirements of MNDOT Tables 3127-1 and MNDOT 3127-2 for FA-2.

2.4 BITUMINOUS MATERIAL FOR FOG SEAL

Provide bituminous emulsion in accordance to MNDOT 3151.2E.2 meeting the requirements of CRS-2Pd.

PART 3 EXECUTION

3.1 PREPARATION OF SURFACE

Prepare surface in accordance to MNDOT 2356.

3.2 SEAL COAT APPLICATION

3.2.1 Application of Bituminous Material

Apply in accordance to MNDOT 2356 at a rate in accordance to the Contractor Mix Design.

3.2.2 Application of Aggregate

Apply in accordance to MNDOT 2356 at a rate in accordance to the Contractor Mix Design.

3.2.3 Application of Bituminous Material for Fog Seal

Apply in accordance to MNDOT 2355 at a rate of 0.20 Gal/SY.

SECTION 32 12 36.23 Page 3 W912ES18B0015

3.3 SWEEPING

Remove surplus aggregate on the same day as the seal coat construction.

Re-sweep areas the day after the initial sweeping.

3.4 DISPOSAL

Dispose of swept aggregate per paragraph CONTRACTOR DISPOSAL AREAS in

SECTION 01 14 00.00 13 WORK RESTRICTIONS.

3.5 QUALITY CONTROL

Submit a signed Delivered Material Certification of the Bituminous Material and aggregates certifying that each type of material delivered meets the requirements of these specifications. The Delivered Material Certification shall also include the dates of delivery and quantities delivered of each material type to each site.

Perform testing as indicated in paragraph TESTING.

3.6 TESTING

The following tests shall be performed by and at the expense of the Contractor. Copies of test results with verification that the results meet the mix design shall be submitted to the Contracting Officer.

Take one sample per day of paving and perform the following tests.

Sieve Analysis in accordance with ASTM C117 and ASTM C136/C136M.

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SECTION 32 12 36.23 Page 4 W912ES18B0015