SOW_Appendix_C_-_Bonded_Aggregate_Specifications_0004.pdf

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BONDED AGGREGATE PAVING

SECTION 32 13 11 – BONDED AGGREGATE PAVING

PART 1 - GENERAL

1.1 SUMMARY

A. This Section Includes bonded aggregate paving for the following:

1. Walkways.

1.2 DEFINITIONS

A. Bonded Aggregate: A Resin-Bound Crushed Stone Surfacing System is a rigid, permeable pavement suitable for pedestrian pathways, walkways, patios, plazas and residential light vehicular driveways.

1.3 REFERENCES

A. ASTM D 1621-04a - 100% recycled PP (polypropylene) – black

1.4 PERFORMANCE REQUIREMENTS

A. Load Bearing Capacity: Bonded aggregate paving system shall bear up to 972psi of compressive strength. Compression test results must show that the system can withstand low (pedestrian) to heavy weight traffic.

B. Porosity: The average infiltration rate of the bonded aggregate system, using 0.08’’- 0.25’’ size angular aggregates as the resin bonded top layer is 432 gpsf/minute (gallon per square foot per minute) and even on 100% of the surface.

C. UV Resistance: Resin supplier (manufacturer) shows no record of significant colour change of the resin bonded stone pavement over time on any other similar project of comparable size and aggregate color (top layer). Resin shall be UV stable and clear of color.

1.5 SUBMITTALS

A. Product Data: For each type of manufactured material and product indicated including but not limited to:

1. Product Data Sheet

2. Material Safety Data Sheets (MSDS).

B. Material Certificates: Signed by manufacturers certifying that each of the following materials complies with requirements.

C. Samples of Verification:

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1. In the form of 5lb bags of each specified aggregate

2. Layout drawings of honeycomb panels to scale.

D. Minutes of pre-installation conference.

E. Warranty: Sample of warranty.

F. Mockup: Mockup shall be a 10’x10’ area where all adjacencies are represented. Adjacencies include but are not limited to: building, steel edging, steel angle, granite paving, divider systems, existing site paving and any other edge conditions that may impact how the bonded aggregate is poured.

G. Receive approval for the mockup by the Contracting Officer and the Government's Representative before starting installation. Maintain mock-up as a standard for judging completed work. Approved mock up may be incorporated in to the final product.

1.6 QUALITY ASSURANCE

A. Comply with Architectural Barriers Act Accessibility Standards (ABAAS) and DSC Accessibility Requirements.

B. Pre-installation Conference: Conduct conference at Project site to comply with requirements in Division 01 Section “Project Management and Coordination”.

1. Before submitting deign mixes, review design and examine procedures for ensuring quality of materials and practices. Require representatives including the following, of each entity directly concerned with bonded aggregate pavement to attend conference:

a. Contractor’s superintendent.

b. Binding producer.

c. Pavement subcontractor.

d. Contracting Officer.

C. Manufacturer Qualifications: Quality management system certified to ISO 9001:2000.

D. Installation: Choose an installer with a satisfactory record of performance on landscaping and/or paving projects of comparable size, complexity, and quality. Workers must be qualified to accomplish similar tasks as; concrete detailing and installation and/or terrazzo.

1.7 PROJECT CONDITIONS

A. Traffic: Maintain access for vehicular and pedestrian traffic as required for installation of bonded aggregate paving. All traffic plans must be reviewed and approved by Government prior to commencement of construction activities.

1.8 DELIVERY, STORAGE AND HANDLING

A. Delivery: Deliver materials in manufacturer's original packaging, with identification labels clearly intact.

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B. Storage:

1. Store all materials per manufacturer’s instructions.

2. Store resin out of direct sunlight.

3. Resin must be stored in original, unopened containers.

4. Resin must be stored in a dry place with temperature between 50 and 100 degrees

Fahrenheit (F).

5. Resin should be used within one year of expiration date indicated on outside of container.

6. Crushed stone for the top layer must be protected against rain or snow with a tarp, kept at a temperature above 50 degrees F and humidity level 10% or lower.

C. Handling: Use care when unwrapping, handling, installing and infilling honeycomb grid sections. Be certain to overfill cells prior to any load bearing or vehicular traffic. All workers must wear protective clothing, safety glasses, gloves and 2 filter masks when manipulating storing resin products, as detailed on the MSDS.

1.9 WARRANTY

A. Warranty: Manufacture’s standard one year product warranty.

PART 2 - PRODUCTS

2.1 MANUFACTURERS

1. Solecol Inc., 195 Ile Belair Est, Rosemere, Quebec, J7A 1A8, Canada; Phone: (450) 433- 0739; Email: support@solecol.com; Website: www.solecol.com; or Approved Equal.

2.2 Resin

A. Read MSDS before use.

B. SOLUV – Clear Bond, or Approved Equal.

C. Coverage rates depend upon application, surfacing material and installation method. Consult manufacturer for assistance.

2.3 LOAD SUPPORT CONFIENMENT SYSTEM

A. PG45 Green Innovations, or Approved Equal.

B. Base Materials:

1. Panels shall be 24" x 24" x 1 3/4" (0.61 m x 0.61m x 44.45mm) heavy duty black injection-molded polypropylene panel capable of supporting wheelchairs and light to heavy weight traffic.

2. Compressive strength is tested under ASTM D 1621-04a and shall be 340T/ m2.

Loading capacity shall be > 300 tons/m2, > 380 psi, when filled with gravel over the specified base.

mailto:support@solecol.com http://www.solecol.com/

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2.4 LOAD CONFINEMENT GRID INFILL MATERIALS

A. For a permeable system, fill cells with clean, washed, angular or round stones, gravel or decorative stones.

B. Infill gravel sizes shall range between 1/8" to 3/8" and shall be pre-washed of all fines before delivering to the site (<5% fines). No gravel less than 1/8" nor more than 3/8" shall be allowed.

C. Install infill gravel by back-dumping into the cells from buckets mounted on rubber-tired tractors. Avoid sharp turns of the tractor, driving only on gravel-filled cells. Spread gravel laterally from the pile using power brooms, blades, flat bottomed shovels and/or wide asphalt rakes to fill the cells. Compact finished course with a vibrating plate compactor.

2.5 SURFACE CRUSHED STONE

A. Surface treatment includes one or a combination of the following:

1. Clean, washed, crushed stones (can be decorative, angular or rounded), size 0.125" (1/8") up to .315 " (5/16”) with less than 10% humidity. Choose harder stones for increased durability in residential driveway applications. For more permeability, use larger stone size.

B. Install crushed stones in thicknesses as shown and as detailed. Compact by hand tamping.

C. Do not commence work using stones that are wet (more than 10% humidity), frozen or that are coated with ice or frost. No work shall be installed over frozen or wet, saturated or muddy soil.

Soil shall be relatively warm, dry and free from standing water and at a temperature above 50 degrees F.

D. Crushed stone shall be supplied/manufactured by Kafka Granite, 550 East Highway 153, Mosinee WI 54455; or Approved Equal. Material shall be angular to aid compaction.

E. Color: Contracting Officer shall select color from manufacturer’s standard color range (gray/beige).

2.6 STEEL EDGE

A. Edging: Steel, 5 1/4 inches high, 1/4 inch thick, black color. Furnish manufacturer’s recommended steel stake to secure edging in place.

1. Ryerson or Approved Equal.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Evaluate site conditions. If any other landscape contractor is in charge of the subbase and base course preparation, advise Contracting Officer about any derogation from specified preparation and refrain from excavation until site conditions have been corrected.

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B. Evaluate that the layout of the project is as indicated on the drawings. Notify the Contracting Officer and do not proceed until the layout of the project matches the drawings.

C. Make sure all required materials and tools are on-site and available to proceed to the installation properly.

3.2 INSTALLATION OF POROUS SURFACING SYSTEM – MIXING METHOD FOR A

PAVEMENT

A. Subgrade Preparation:

1. Excavate and shape foundation soils to grades, elevations, and dimensions as indicated on the drawings. Be sure water will flow away from any structures. Install moisture barrier if projects meets a foundation with a basement.

2. Confirm foundation soil meets specified compaction through proof rolling or other conventional method and is examined by the Contracting Officer. If unacceptable foundation soils are encountered, excavate affected areas and replace these areas with suitable quality material as directed by the Contracting Officer. For subgrade soil compaction a vibratory plate, compactor, or roller is recommended.

B. Base Preparation:

1. Installation constitutes acceptance by the Contractor of existing conditions and assuming responsibility for satisfactory performance of the system.

2. For subgrade or base preparation, level and clear the area of large objects such as rocks, or pieces of wood. Excavate area allowing for unit thickness and top layer. Leave a minimum of 2.75’’ (70mm) for honeycomb confinement grid panels and top layer to meet final grade.

3. Place the panels. Position the panels on the prepared subgrade previously covered with geotextile membrane. Cut to shape with aviation shears or skill saw with fine-toothed blade. Use protective gloves to avoid abrasions.

4. All hard surfaces abutting areas to receive Gravel Surfacing shall be in place prior to commencing work. Finished gravel work shall be no more or no less than 3/8" below adjacent hard surfaces. Adjust Crushed Aggregate levels accordingly so that this will be possible.

5. Place first row of panels against a stationary edge if possible. Stagger panels in a bricklayer pattern. The panels have interlocking connectors; however most installations do not require them to be used. Use connectors only in areas with greater traffic or steeper grades.

6. Fill cells with chosen infill. Maximum particle size of granular infill material must not exceed 9.53mm (.375 inches). Minimum particle size should be 3.18 mm (.125 inches) to allow porosity. Cell walls must be sufficiently covered with infill to prevent any equipment or load bearing vehicular traffic from damaging the grid.

7. Compact infill to a minimum 90 percent of SPDD.

8. Contour compacted surface to a specified elevation and grade as indicated on the drawings.

9. Install steel edge restraint.

C. Mixing and Installation of Top Layer

1. Clean stones thoroughly. Allow to dry(less than 10% humidity). Aggregates must be free from any fines or dirt (less than 5% of fines). The cleaner the stones, the stronger the resin to gravel bond.

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2. Do not install if rain is expected within 12 hours.

3. Mix stones in a five gallon plastic bucket, wheelbarrow or cement mixer. Cement mixer can be cleaned up with acetone before liquid cures.

4. Mix stones with liquid to coat them until they are wet. Resin’s ratio per 5 gallon bucket of stones will be determined by manufacturer. Consult manufacturer for assistance.

5. Working in small areas, pour out the coated stones, level and trowel to finish to desired thickness (at least 1"). Rope off treated area to protect it from people and animals.

6. In case of unexpected rain, protect the area with plastic tarps, leave it a minimum of 2ft distance between surface and tarps to allow a proper ventilation.

7. Install when outdoor temperature is 50 degrees F or above and will not drop below 50 degrees F for at least 12 hours. Allow 24 hours to cure. If the temperature is around 40 degrees F then it may take up to 48 hours to cure.

8. If desired, apply roller coat using the same resin and medium sized paint roller. This replenishes some liquid that has migrated downward during the curing process due to gravity and provides a ‘double-bond’ effect. Rope off treated area to protect it from people and animals. Do not apply roller coat if rain is expected within 12 hours. Do not cover area with plastic. Apply roller coat when outdoor temperature is 50 degrees F or above and will not drop below 50 degrees F for at least 12 hours. Allow to cure 24 hours.

9. Pour out the coated stones placing them into the desired areas. Trowel can be used if necessary to smooth it out. Note: Be careful to not get the coated stones on any surrounding pavements, flagstones, edges, borders etc. It can stain those areas permanently. Protect those surrounding pavements, edges or borders with masking tape. Rope off treated area to protect it from people and animals. Do not apply roller coat if rain is expected within 12 hours. Install when outdoor temperature is 50 degrees F or above and will not drop below 50 degrees F for at least 12 hours. If the temperature is around 50 degrees F then it may take up to 48 hours to cure.

D. Post Placement

1. Reserve 150 pounds (bagged in min 25lbs) of top layer crushed stones for repairs/correcting top layer. Store on site in a weather-proof area so that material will be available for use necessary.

2. Snow plowing – Use shovels or blades with plastic/rubber blades.

3. Use of salt for de-icing is allowed.

4. All bonded aggregate pavements require regular inspection and periodic removal of accumulated sediment from the surface. Clogging typically occurs near the pavement surface. If the surface is slow draining, high performance vacuum equipment (It is recommended that regenerative air vacuum equipment be used annually to clean the pavement surface) may restore the permeability and should be tried first. The primary maintenance requirement for bonded aggregate paving is to clean the surface drainage voids. Fine debris and dirt accumulate in the drainage openings and reduce the pavement’s flow capacity. It is natural for clogging to occur over time, but routine maintenance can reduce this problem.

3.3 INSPECTION

A. Inspect finished installation to establish compliance with ABAAS and DSC requirements. Use DSC - CQC Accessibility Inspection Report as basis for recordation. Submit Report to CO for review and final approval. Record observations and supplement with sketches, descriptive data and notes, drawings, measurements, digital images, etc. Coordinate inspections with

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construction schedule and commence inspection immediately after work is completed. Submit Report to CO no more than one day (24 hours) after performing inspection.

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