PART 1 - GENERAL
 
1.1          RELATED DOCUMENTS
 
A.       Drawings and general provisions of the Contract, including Division 1
          Specification Sections, apply to this Section.
 
1.2          SUMMARY
 
A.       This Section includes the following:

  1. Aggregate paving surface course (resin-stabilized decomposed granite).
  2. Aggregate base course
  3. Edging materials 


1.3          DEFINITIONS
 
A.       Resin emulsion: binding agent for Decomposed Granite (DG).
 
B.       DG: compacted decomposed granite composite utilizing resin emulsion
          and specified aggregate.
 
1.4          SUBMITTALS
 
A.       Resin emulsion product data sheet.
 
B.      Samples

  1.  Decomposed granite or specified aggregate: 2 lb. sample.
  2.  One sample "puck" of DG.
  3. One foot length of edging, with stake.


C.      Test reports:

  1.  Marshall Stability test results using pre-approved specified aggregate.
  2. Final compaction report.


D.      Mix design:

  1. Source, color and weight of aggregate
  2. Quantity of water for pre-wetting
  3. Quantity of resin emulsion.
  4. Written certification from approved mix manufacturer that all deliveries of mix meet specifications.
  5. Weight tickets or weigh-master tickets for each load of mix.


1.5          QUALITY ASSURANCE
 
A.      Pre-installation

  1. The Contractor shall coordinate, schedule and conduct a meeting to review the installation requirements with the mix supplier and Architect.
  2. Contractor shall form and install a 4-foot square sample of DG duplicating a small section of actual work to be done.


a. If work is acceptable, sample may be part of the total production. If work is not satisfactory, sample shall be removed at Contractor’s expense and further samples installed until approved as satisfactory by Architect. 
 
b. Installer shall be a certified by the manufacturer or blender of the resin product. 

1.6          SITE CONDITIONS
 
A.       Weather and site requirements

  1. Aggregate base or sub-base is to be dry.
  2. Do not install DG mix, or apply seal coat if the possibility of rain is forecast within four days following installation.
  3. Resin emulsion is diluted with water: protect newly installed pavement and seal coat from water until curing is complete.
  4. Install DG mix and seal coat when ambient temperature is above 60 degrees
    Fahrenheit and overnight temperature is above 32 degrees F.


PART 2 - PRODUCTS
 
2.7          MATERIALS
 
A.       Aggregate Base: Meet requirements of geotechnical engineer’s
          recommendations for asphalt base.
 
B.       Aggregate for DG mix:

  1. Aggregate color shall be as specified on the Drawings.
  2. Nominal maximum size of aggregate:

Sieve         Metric                % Passing
3/8"            9.5 mm              95 -100
# 4             4.5 mm              87 -100
# 8             2.36 mm            73 – 93
# 30           600 um              34 – 54
# 50           300 um              20 – 40
#200          75 um                min 11 - 23


C.       Resin emulsion: Totally natural additive emulsion with high solids
          content formulated especially for use as a natural flexible pavement binder.

  1. Resin-stabilized DG shall cure to a water-insoluble, high strengths state, equal in strength to hot-mix asphalt concrete.
  2. Resin emulsion shall dry without affecting the color of the aggregate.
  3. Resin emulsion shall be added at an addition rate of 10%-12% during blending operations.
  4. Resin emulsion shall be non-hazardous, non-toxic, non-corrosive, and shall be water-soluble.
  5. Manufacturers:
    a.       ResinPave, by Road Products Corporation, (800) 685-0539.
    b.       Resin Pavement, manufactured by:
              Soil Stabilization Products, (800) 523-9992.

D.       Water: Fresh, clean, and potable.
 
E.       Seal coat: Resin emulsion.
 
F.       Tack coat: Resin emulsion diluted with water.
 
2.8          MIXES
 
A.       DG mix as supplied by manufacturer-approved blender with not
          less than 10% - 12% emulsion by dry weight of the aggregate.
 
B.       Installed DG mixture shall meet the following requirements when
          tested in accordance with the Marshall Stability Test, ASTM D 1599-89.
          Mix blending facility shall submit test results for review and approval.
          Requirements for Marshall Stability Flow: Stability Minimum (pounds)
          shall equal 4,000.
 
2.9          EDGING
 
A.       Aluminum edging: 3/16” x 5 ½”, manufactured from 6063 extruded
          aluminum alloy of T-6 hardness with interlock system and 5 stake
          punch outs fabricated in each strip. Stakes 1/5” x 12” lock 1/2”
          below top of edging.
 
2.10         WEED BARRIER FABRIC
 
A.       Spun or woven, non-degrading geotextile fabric that blocks 95% of
          weed growth and is permeable to air, water, gases and fertilizer.
 
 
 
PART 3 - EXECUTION
 
3.11        EXAMINATION
 
A.       Examine site and verify that conditions are suitable to receive work
          and that no defects or errors are present which would cause defective
          installation of product or cause latent defects in workmanship and function.
 
B.       Review subgrade to verify that it has been graded correctly and
          compacted as required for installation of the aggregate base.
 
C.       Before proceeding with work, Contractor shall notify the Trustees’
          Representatives in writing of any unsuitable conditions and conflicts.
 
3.12         PROTECTION OF EXISTING CONDTIONS
 
A.       Use every possible precaution to prevent damage to existing
          conditions to remain such as structures, utilities, irrigation systems,
          plant materials and paving on or adjacent to the site of the work.
 
B.       Provide barricades, fences or other barriers as necessary to protect
          existing conditions to remain from damage during construction.
 
C.       Contractor is fully responsible for all costs associated with replacement
          of damage caused by his work.
 
3.13        LAYOUT
 
A.       Establish lines and levels, locate and lay out by instrumentation and 
          similar appropriate means for aggregate paving finish grades.


B.       Staking: Provide a sufficient quantity of grade stakes as required to
          provide aggregate paving with smooth finish grades and positive drainage.
 
3.14        SUB-GRADE PREPARATION:
 
A.       Refer to Geotechnical report for subgrade preparation prior to
          placement of aggregate base. Grade subgrade with uniform slope
          between points where elevations are given.
 
B.       Subgrade shall be crowned in the middle, or have a 2% slope from
          one side to the other.
 
C.       Grade sub-grade surface to within 0.05 foot of finish grade minus 
          aggregate base and aggregate paving thickness.
 
D.       Fill and compact any depressions and remove loose material to finish
          true to line and grade, presenting a smooth, compacted and unyielding
          surface.
 
E.       Remove debris, loose dirt and other extraneous materials.
 
F.       Ditches, drains and drain pipes shall be installed if necessary to protect
         of the pavement and base from cross flows of water. All water flow should 
         be directed off of and away from the pavement and base.
 
3.15        AGGREGATE BASE
 
A.       Edging materials must be in place prior to placing aggregate base or
          DG. The DG compacted surface should be no less than 1/8" above the
          edging material to assure proper drainage
 
B.       Place and compact aggregate base and provide finished surface per
          specification for asphalt paving.
 
C.       Compaction tests of aggregate base are required prior to installation of DG.

  1. Architect shall to determine how many compaction tests are to be conducted.
  2. Aggregate base must not be disturbed during installation of DG.
  3. Any damage to base during testing must be repaired prior to placement of pavement.


3.16         INSTALLATION OF DG MIX
 
A.       Install weed barrier fabric over aggregate base prior to installation 
          of DG mix.
 
B.       Placement: place mix via a single, continuous operation.

  1. Use a self-propelled, mechanized spreading-and-finishing machine designed specifically for placement of resin mix.
  2. Machine shall be equipped with a screen or strike-off assembly capable of being accurately regulated and adjusted to a uniform depth.
  3. Small amounts of material may be placed and raked by hand, using asphalt rakes.


C.       Provide a structural section of a minimum of 3 inches compacted
          thickness upon completion of final compaction. Verify required
          thickness on drawings. The following table shows minimum required
          thickness for application:
 
D.       DG surface shall be crowned in the middle or have a 2% cross slope. 


E.       If slope of surfaces to be paved exceed 4 percent, place material in an
          uphill direction. Do not allow placing equipment to run over un-compacted
          material.
 
F.       Initial compaction: After mix placement, begin initial compaction as
          soon as mix will bear roller weight without undue displacement.

  1. If mix will not support compaction equipment due to excess moisture, delay initial compaction until mix achieves adequate stability to support compaction equipment.
  2. Use of non-heeled boots is required for anyone having to walk on resin DG during installation process.
  3. Perform initial breakdown compaction with self-propelled, 1-ton steel drum rollers in static mode only. Walk-behind vibratory plate compactors shall be used for edges and areas where a steel drum roller is not practical.
  4. On grades of 4% or steeper: Use static rollers, operate equipment at slow speeds and with the drive wheel forward to the uphill direction of work progress.
  5. Generally, no more than two passes are required for initial compaction.
  6. Warning: If the pavement begins to develop stress cracks, the pavement Is being over-compacted and further compaction should be halted.
  7. Test paving surface for slope and smoothness after initial rolling, and correct deficiencies immediately so that finished surface will meet specified tolerances and requirements for smoothness.


G.      Final Compaction:

  1.  Begin final compaction as soon as possible after initial compaction has been completed.
    a.       The purpose of the final compaction is to eliminate roller marks from the initial compaction and to create an aesthetically appealing pavement surface. The Architect shall be the judge of aesthetic considerations.
    b.       Contractor may use a 1-ton steel drum roller or small plate compactor.
    c.        Do not over roll.


3.17        SEAL COAT
 
A.      Preparation

  1. Apply seal coat to completed surfaces no earlier than 3 days or later than 7 days following final compaction.
  2. Surface must be swept thoroughly with hand brooms.
  3. Protect pavement surface against tracked on dirt and mud until seal coat application has been completed.


B.      Application

  1. Apply each seal coat at a rate of 0.02 - 0.04 gallon of resin emulsion/sq. yd.
  2. Dilute resin emulsion 4:1 with water prior to application. Test small area to insure proper dilution rate is used.
  3. Apply seal coat in a verifiable and reproducible manner, at a controlled rate and with uniform pressure throughout.
  4. Make multiple passes as necessary to prevent run-off of resin emulsion.


C.       Curing: Allow seal-coated surface to dry for 48 hours prior to allowing
          traffic on pavement.
 
3.18        TOLERANCES
 
A.       In-Place compacted thickness: 

  1. Aggregate paving surface course: maximum 3/16-inch plus, minus 0-inch. 

B.      Finished surface smoothness:

  1. Subgrade: +/- 0.08 foot.
  2. Aggregate base course: maximum 3/8-inch in 10-feet.
  3. Aggregate paving surface course: maximum 3/16-inch in 10-feet in any direction.


3.19         REPLACEMENT OF DEFECTIVE PAVEMENT
 
A.       Replace full depth of paving thickness in paving mixes that are
          contaminated or pavement that is defective.

  1. Skin patching will not be permitted. 

B.       Edges of Replaced Pavement:

  1. Cut edges of pavement to be removed so that sides are vertical and oriented perpendicular and parallel to direction of traffic.
  2. Spray edges with a tack coat of resin emulsion.


C.       Installation of replacement pavement:

  1. After applying tack coat, place pavement mix in areas where paving was removed in sufficient quantity to conform to elevation and tolerance requirements.
  2. Thoroughly compact DG mix so that cured patch meets all requirements set forth in this specification.
  3. Skin patching of an area that has been rolled will not be permitted.


3.20         FIELD QUALITY CONTROL
 
A.      Density tests:

  1. Perform tests in accordance with ASTM D 2950.
  2. Perform tests within 48 hours after final compaction.
  3. Perform at least three tests, in areas specified by Architect.


B.       Surface shall not vary more than 3/16 inch per 10 feet, except at
          intersections or changes of grade. Areas not meeting specified surface
          tolerance are to be corrected immediately after initial compaction.
 
C.       DG course thickness: Correct areas not meeting specifications 
          immediately after initial compaction.
 
3.21        PROTECTION
 
A.       Protect pavement surface against equipment and traffic until pavement
          has cured sufficiently, a minimum of 72 hours, to support traffic without
          marring, rutting, tearing, distressing or damaging the pavement in any
          way. Utilize warning signs, barricades, and protection fencing to protect
          pavement from traffic.
 
B.       All pavement installed must be protected by covering with plastic sheeting
          if unforeseen inclement weather occurs prior to complete curing.
 
C.       Contractor is responsible for replacing damaged pavement, if damage 
          was preventable, at his own expense.
 
END OF SECTION


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