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| Testing & Engineering |
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This Report Shows:
- Which Edging Designs were Tested
- What are the Properties of Plastics
- When Edge Restraints Fail
- Why Flexible Pavement Systems Fail
- How Test Areas were Prepared to
ICPI / BIA & Manufacturer Specifications
- Why this Testing is Important to
the Paver Industry
- Photos and Graphs to Support Findings
To receive your copy of this report
Call: 800-728-3832 or Email: sales@paveedge.com
Testing Proves PAVE EDGE® Outperforms Other Leading Edge Restraints.
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Specifications for STORK Test Method
For Testing Paver Edge Restraints
Test area construction:
Prepare aggregate base following ICPI and BIA standards with a minimum compaction depth of 18 inches. Test pad to be built should have a nominal dimension of 83 inches x 47 inches with one concave (inward) side.
Figure 1
∙ Base – 18” minimum depth, ¾” minus crushed limestone, minimum base extension of 24” (61cm)
∙ Pavers – 100mm x 200mm x 60mm concrete pavers (1.5mm spacer bars)
∙ Pattern - 90˚ herringbone
∙ Bedding – nominal 1” layer of loose screeded coarse washed sand
Bedding sand is to be loose screeded in the test area to a nominal thickness of 1” (25mm). The pavers used for each test area are to be 4” x 8” x 2 3/8” thick (101mm x 202mm x 60mm thick). Use a soldier pattern along the edging, with a herringbone pattern in the pavement body. Install edge restraint directly on the compacted base material. Spike placement is specified in the charts on the following pages.
STORK METHOD Defined: Two (2) test pavers fabricated out of cold rolled 1045 square steel tubing, milled flat on the top and bottom, and steel plate welded to each end to close the box. Final test paver dimensions to be 101mm by 202mm by 45mm thick. Strain gage to be attached to each test paver at the center of the top surface. The orientation of the strain gage is to be parallel to the long direction of the test paver. Two (2) 1-inch slots are to be milled into the top surface in the long direction. The slots serve to isolate the strain gage from transverse forces and to provide better resolution at low loads. A 15mm cover plate is also to be fabricated to give a final test paver height of 60mm and to protect the strain gage from the compaction process. Compressive loads are to be applied to each test paver using a calibrated material test system. Each test paver is to be calibrated between 10 and 500 pounds. Each paver is to be soaked at 30 degrees F immediately prior to calibration.
On the test area, one paver is to be removed from a straight soldier border section, and one from a curved soldier border section. Pavers selected should be from locations midway between the spikes holding the edging in place. Each of the pavers is replaced by a test paver connected to a signal conditioner and strain indicator. Two (2) 2-inch dial indicators are to be used to measure the edging displacement before and after compaction. Use an aluminum post driven at least 6 inches into the base gravel approximately two (2) feet from the edging to be measured. Use a 24 inch aluminum post to bridge the distance from the edging to the dial indicator. Deflection locations are to be located near the test pavers, midway between edging spikes.
After recording starting measurements, compact the test area using a 5000 lbs centrifugal force, forward traveling plate compactor. Make five (5) initial passes and stop the plate compactor. Record deformation and load data. Start the compactor and make five (5) more passes over the test area and stop the compactor. Record final deformation and load measurements.
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