Item 255 Full Depth Rigid Pavement Removal and Rigid ...



2005 Technical Process Review Checklist

Item 308 Asphalt Treated Free Draining Base

|District: |Date: |Project No.: |Co/Rt/Sec: |

|Contractor: |Project/District Contacts: |

|Work Location: |

| |Reviewed |Specification Conformance Statement |CMS/ CIM |Measurements |Conformance Comments |

| |“√” | | | | |

|Materials |

|1 | |Furnish Aggregate conforms to the |308.02 | | |

| | |gradation requirements of No. 67 or 57 | | | |

| | |size. | | | |

|2 | |Aggregate is crushed carbonate stone, |308.02 | | |

| | |crushed gravel, or air cooled blast | | | |

| | |furnace slag. | | | |

|3 | |Contractor uses PG 64-22 asphalt |308.02 | | |

| | |binder. | | | |

|4 | |Reclaimed asphalt concrete pavement is |308.02 | | |

| | |not used. | | | |

|Mix Composition |

|5 | |Combine The asphalt binder is combined |308.03 | | |

| | |with the aggregate in an amount equal | | | |

| | |to 1.5 to 3.5 percent by weight of the | | | |

| | |mix. | | | |

|6 | |The mix with asphalt binder: |308.03 | | |

| | |Does not show excess drainage at 250 | | | |

| | |(F. | | | |

| | |Aggregate is coated with shiny black | | | |

| | |coating of asphalt binder (minor bare | | | |

| | |aggregate exposure is acceptable). | | | |

| | |The coating is not brown or dull in | | | |

| | |appearance, a sign of excess aggregate | | | |

| | |absorption of the asphalt binder or low| | | |

| | |asphalt binder content | | | |

|7 | |A minimum of 3 weeks before the |308.04 | | |

| | |producing the ATFDB, a computed blend | | | |

| | |of aggregate and asphalt binder, using | | | |

| | |standard JMF submittal forms, and | | | |

| | |production temperature range was | | | |

| | |submitted to the Laboratory for initial| | | |

| | |design verification. | | | |

|8 | |A 1 gallon sample of asphalt binder and|308.04 | | |

| | |one bag of aggregate were delivered to | | | |

| | |the Lab (prior to notification of the | | | |

| | |delivery of the material. | | | |

|Roller and Weather Limitations |

|9 | |Only tandem steel wheel rollers |308.06 | | |

| | |weighing 6 to 10 tons are used for | | | |

| | |compaction. | | | |

|10 | |The ATFDB is spread only when the |308.07 | | |

| | |atmospheric temperature is above 45 (F.| | | |

|11 | |The ATFDB is not placed when rain is |308.07 | | |

| | |imminent. | | | |

|12 | |If rain occurs during placement of the |308.07 | | |

| | |ATFDB, all operations are stopped. | | | |

|13 | |The ATFDB is not placed during any |308.07 | | |

| | |weather conditions that would cause its| | | |

| | |degradation, segregation or | | | |

| | |contamination. | | | |

|14 | |The ATFDB is not spread on frozen |308.08 | | |

| | |material. | | | |

|Spreading and Compacting |

|15 | |The ATFDB material is spread by a |308.08 | | |

| | |method that produces a smooth, uniform | | | |

| | |layer before compacting. | | | |

|16 | |When compacting the ATFDB material, at |308.08 | |. |

| | |least two roller passes over any given | | | |

| | |point on the surface are made. | | | |

|17 | |The ATFDB is compacted sufficiently to |308.08 | | |

| | |support the weight of the equipment | | | |

| | |that will place the next layer of | | | |

| | |pavement | | | |

|18 | |The ATFDB is not over-compacted to the |308.08 | | |

| | |extent the aggregate particles are | | | |

| | |crushed or broken. | | | |

|19 | |The material is completely rolled |308.08 | | |

| | |before the mix temperature has dropped | | | |

| | |to less than 100 (F. | | | |

|20 | |The AFTDB is not cooled with water. |308.08 | | |

|21 | |Transverse construction joints are |308.08 | | |

| | |formed by cutting back into the | | | |

| | |completed work to form a vertical face.| | | |

|22 | |If significant breakup of the ATFDB |308.08 | | |

| | |occurs at or near the outer portion of | | | |

| | |a lift during the compaction operation,| | | |

| | |lateral support using forms or other | | | |

| | |approved methods are used. | | | |

|23 | |In areas of ATFDB thet are inaccessible|308.08 | | |

| | |to rollers, compaction is done using a | | | |

| | |method approved by the Engineer. | | | |

|24 | |The next layer of pavement on the ATFDB|308.08 | | |

| | |is not placed until the next day. | | | |

|Thickness and Surface Tolerances |

|25 | |The compacted thickness of the ATFDB is|308.09 | | |

| | |4 inches. | | | |

|26 | |The placed ATFDB thickness conforms |308.09 | | |

| | |based on randomly checking the | | | |

| | |thickness during construction. | | | |

|27 | |All sections found to be (1/2 inch from|308.09 | | |

| | |the specified thickness are removed and| | | |

| | |replace with ATFDB within this | | | |

| | |tolerance. | | | |

|28 | |he finished surface is uniform and |308.09 | | |

| | |varies no more than 1/2 inch from a | | | |

| | |10-foot straightedge applied to the | | | |

| | |surface parallel to the centerline of | | | |

| | |the pavement. | | | |

|29 | |Any section found to be out of |308.09 | | |

| | |tolerance is removed and replace it | | | |

| | |with ATFDB within the specified | | | |

| | |tolerance at no additional expense to | | | |

| | |the Department. | | | |

|Quality Control and Acceptance |

|30 | |Each day before the start of |308.11 | |If both samples pass the gradation test, the Contractor may|

| | |production, two separate samples of the| | |produce ATFDB all day. |

| | |aggregate stockpile are obtained and | | |If one or both of the samples fail the gradation test, do |

| | |tested for gradation | | |not begin production until the stockpile conforms to spec. |

|31 | |If any material is added to the |308.11 | | |

| | |stockpile, immediately another sample | | | |

| | |is taken and tested. | | | |

|32 | |The Department will base Acceptance is |308.11 | |To be accepted, the ATFDB should be coated with shiny black|

| | |based of the asphalt binder content on | | |coating of asphalt binder and not be brown or dull in |

| | |the field inspection of the coating on | | |appearance. |

| | |the aggregate | | |Minor inconsistent bare aggregate exposure is acceptable. |

| | | | | |If the delivered mix is brown or dull in appearance, adjust|

| | | | | |the asphalt binder content to the satisfaction of the |

| | | | | |Engineer |

|Protection of Underdrains and ATFDB |

|33 | |The underdrain system is functional |308.12 | | |

| | |before placing the ATFDB. | | | |

|34 | |Construction equipment is not allowed |308.12 | | |

| | |to crush the underdrain pipe or system | | | |

| | |as a result of the placement or | | | |

| | |compaction of the ATFDB. | | | |

|35 | |There is a always a positive connection|308.12 | | |

| | |between the underdrain system and the | | | |

| | |ATFDB regardless of the sequence of | | | |

| | |operations in the Contract Documents. | | | |

|36 | |If used as a haul road, the ATFDB has |308.13 | | |

| | |no significant displacement, breakup, | | | |

| | |or contamination . | | | |

|37 | | ATFDB is protected from fine material |308.13 | | |

| | |contamination at all times. | | | |

|38 | |Adequate surface and subsurface |308.13 | | |

| | |drainage is provided for the ATFDB, | | | |

| | |subbase, and subgrade at all times. | | | |

|39 | |A track type paver is used if the ATFDB|308.13 | | |

| | |is damaged. | | | |

|40 | |The first course of asphalt concrete on|308.13 | | |

| | |top of the ATFDB is allowed to cure | | | |

| | |overnight before placing the succeeding| | | |

| | |pavement courses | | | |

|Exposure to the Elements |

|41 | |The pavement is placed on the ATFDB |308.14 | | |

| | |within 40 days. | | | |

|42 | |Contractor constructs the ATFDB at any |308.14 | | |

| | |time if the temperature requirements of| | | |

| | |this specification are met. | | | |

|43 | |Following construction of the ATFDB, |308.14 | | |

| | |the ATFDB is completely covered with | | | |

| | |the next layer of pavement before the | | | |

| | |atmospheric temperature falls below 35 | | | |

| | |(F for any period of time. | | | |

|44 | |All damage caused to the ATFDB, |308.14 | | |

| | |subbase, subgrade, or underdrains by | | | |

| | |the exposure to temperatures below 35 | | | |

| | |(F is repaired at no additional | | | |

| | |expense to the State. | | | |

|Method of Measurement and Basis of Payment |

|45 | |The accepted quantities of Asphalt |308.15 | | |

| | |Treated Free Draining Base is measured | | | |

| | |by the number of square yards | | | |

|46 | |The Department measures the width as |308.15 | | |

| | |the width of the asphalt treated free | | | |

| | |draining base shown on the typical | | | |

| | |sections of the plans and additional | | | |

| | |widening where called for, as directed | | | |

| | |in writing by the Engineer. | | | |

|47 | |The Department measures the length |308.15 | | |

| | |horizontally along the centerline of | | | |

| | |each roadway or ramp. | | | |

|48 | |The Department pays for accepted |308.16 | | |

| | |quantities, complete in place, at the | | | |

| | |contract price bid per Item 308 by the| | | |

| | |square yard of Asphalt Treated Free | | | |

| | |Draining Base | | | |

|Documentation |

|49 | |Project documents compliance with Item |MOP | | |

| | |308 on Form CA-FP-4, CA-D-3A and | | | |

| | |measurements on CA-D-1 and 2 | | | |

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