175 SECTION 406 DESCRIPTION
406.01.01 General. This work consists of applying a bituminous material prime coat and sand blotter as
required. MATERIALS
406.02.01 Bituminous Material. The type and grade of bituminous material will be specified in the contract.
The bituminous material shall meet the applicable requirements of Section 703. Approved products listed on the QPL may be substituted for the material specified.
406.02.02 Sand Blotter. Sand blotter shall meet the requirements of Subsection 705.03.05. The material may
be accepted in stockpile at the source. CONSTRUCTION
406.03.01 Equipment. Equipment for heating and applying the bituminous material shall meet the
requirements of Subsection 405.03.01.
406.03.02 Weather Limitations. Do not apply bituminous material on a wet surface, when the atmospheric
temperature is below 10 °C (50 °F), or when weather conditions would prevent the proper construction of the prime coat.
406.03 03 Preparation of Surface. The surface shall conform to the established lines and grades, and be
smooth and uniform. Compact surface to the required density. If required, recompact to the required density. If required, apply water immediately before the b ituminous application.
406.03.04 Application of Bituminous Material. Uniformly apply the bituminous material in a continuous
spread. Treat not more than half of the width of the section when traffic is maintained. Carefully apply bituminous material at th e junctions of spreads so that it is not in excess of the specified amount. Squeegee excess bituminous material from the surface. Correct skipped or deficient areas. One way traffic may be permitted on the untreated portion of the roadbed. Transfer traffic to the treated portion when the bituminous material has been absorbed by the surface and will not pick up. Allow prime coats to cure for a minimum of 48 hours prior to paving, unless otherwise approved. The temperature of the bituminous materials shall conform to the requirements of Table I. TABLE I SPRAYING AND MIXING TEMPERATURES OF CUTBACK ASPHALTS Distributor Spraying * Pugmill Mixing Temp erature of Cutback Grade and Type Temp erature Asphalts and Aggregates MC and SC °C (°F) °C (°F) Minimum Maximum Minimum Maximum 70, 70NV ............................... 49 (120) .............. 82 (180) ........................ 35 (95) ............... 60 (140) 250 ................................ ... 74 (165) ............. 104 (220) ...................... 57 (135) .............. 79 (175) 800 ................................ ... 93 (200) ............. 124 (255) ...................... 74 (165) .............. 96 (205) 3000 ................................ . 113 (235) ............ 143 (290) ...................... 93 (200) ............. 116 (240) * The maximum spraying temperature may be used if the aggregate is not heated. 406 PRIME COAT 176 SPRAYING AND MIXING TEMPERATURES OF EMULSIFIED ASPHALTS Distributor Spraying * Pugmill Mixing Temp erature of Grade of Temp erature Emulsions and Aggregates Emulsified Asphalt °C (°F) °C (°F) Minimum Maximum Minimum Maximum CRS -2nv ............................... 52 (125) .............. 85 (185) ............................. (Not used for Mixing) CQS -1nv ................................ 21 (70) ............... 71 (160) ............................. (Not used for Mixing) SS-1, CSS -1 ............................. 21 (70) ............... 71 (160) ........................ 10 (50) ............... 71 (160) SS-1h, CSS -1h ........................... 21 (70) ............... 71 (160) ........................ 10 (50) ............... 71 (160) CMS -2s, CQS -1h ......................... 21 (70) ............... 71 (160) ........................ 10 (50) ............... 71 (160) LMCRS -2h ............................. 52 (125) .............. 85 (185) ............................. (Not used for Mixing) PMPS, PMPS -h ......................... 43 (110) .............. 85 (185) ............................. (Not used for Mixing) PMPS -QB, PMPS -FS ..................... 43 (110) .............. 85 (185) ............................. (Not used for Mixing) MSE, MSE -h ................................ (Not used for Spraying) ............................ 21 (70) ............... 71 (160) * The maximum spraying temperature may be used if the aggregate is not heated.
406.03.05 Application of Blotter Material. When necessary for traffic, spread blotter material in the amounts
required to absorb any excess bituminous material. METHOD OF MEASUREMENT
406.04.01 Measurement. Bituminous material will be measured by the metric ton (ton) based on the use of the
material specified in the contract . If electing to use alternate approved products from the QPL it shall be at no additional cost to the Department. The Department will determine the quantity of alternate product measured for payment. Sand blotter will be measured by the metric ton (ton) or cubic meter (cubic yard). BASIS OF PAYMENT
406.05.01 Payment. The accepted quantities, measured as provided above, will be paid for at the contract
price per unit of measurement for the pay items listed below that are shown in the proposal. Payment will be full compensation for the work prescribed in this Section. When sand blotter is not included in the proposal and it is needed to protect the work or public traffic, payment will be made according to Subsection 104.03. Payment will be made under: Pay Item Pay Unit Cutback Asphalt (type) ................................ ................................ ................................ ................................ .................... Metric Ton (Ton) Emulsified Asphalt (type) ................................ ................................ ................................ ................................ ................. Metric Ton (Ton) Sand Blotter ................................ ................................ ................................ .......................... Metric Ton (Ton), Cubic Meter (Cubic Yard) 177 SECTION 407 SEAL COAT DESCRIPTION
407.01.01 General. This work consists of applying a bituminous material seal coat and sand blotter as required.
MATERIALS
407.02.01 Bituminous Material. The bituminous material shall conform to the applicable requirements of
Section 703. Unless otherwise specified, the bituminous material for the seal coat shall be Emulsified Asphalt, Type SS-1h (Diluted); however, Emulsified Asphalt, Type SS-1 (Diluted), Emulsified Asphalt, Type CSS-1 (Diluted), Emulsified Asphalt, Type CSS-1h (Diluted), or Emulsified Asphalt, Type CQS-1nv (Diluted) may be substituted. Regardless of the option chosen, emulsified asphalt will be measured and paid for under the bid item and at the contract unit price bid per metric ton (ton) for Emulsified Asphalt, Type SS-1h (Diluted) and no further compensation shall be allowed therefore. Emulsified asphalt (diluted) shall be proportioned and mixed according to Subsection 405.02.01.
407.02.02 Sand Blotter. Sand blotter shall meet the requirements of Subsection 705.03.05. The material may
be accepted in stockpile at the source. CONSTRUCTION
407.03.01 Equipment. Equipment for heating and applying the bituminous material shall meet the
requirements of Subsection 405.03.01.
407.03.02 Weather Limitations. Do not apply bituminous material on a wet surface, or when atmospheric
temperature is below 10 °C (50 °F), or when weather conditions would prevent proper construction of the seal coat.
407.03.03 Preparation of Surface. Clean the entire width of surfacing of all dirt and loose material by sweeping
with power brooms supplemented by hand brooms if necessary.
407.03.04 Application of Bituminous Material. Uniformly apply the bituminous material in one operation to
the entire width of one designated traffic lane at a time. The temperature of the bituminous material shall conform to Subsection 406.03.04. Apply the seal coat in such manner as to offer the least inconvenience to traffic and to permit one-way traffic without pickup or tracking of the bituminous material. When a surface treatment is to be applied to the travel lanes, apply the seal coat to the shoulder at least 4 days in advance of the application of the adjacent surface treatment requiring screenings. Apply in such a manner that the joint between the surface treatment and seal coat will present a neat and uniform appearance true to the line shown on the typical cross section. Apply the seal coat over the surface treatment not sooner than 3 days, nor more than 7 days after completion of the final brooming as specified in Subsection 408.03.10.
407.03.05 Application of Blotter Material. When necessary for traffic, spread blotter material in the amounts
required to absorb any excess bituminous material. METHOD OF MEASUREMENT
407.04.01 Measurement. Bituminous material will be measured by the metric ton (ton).
Emulsified asphalt (diluted) will be measured by the metric ton (ton) of diluted mixture. Sand blotter will be measured by the metric ton (ton) or cubic meter (cubic yard).