The Tire Logs were subjected to a multitude of standard ASTM testing procedures that were verified by: Glynn Geotechnical Engineering http://www.glynngroup.com/ consultants in Lockport, NY. Due to the unique characteristics of the Tire Log the material properties were determined using methods similar to those established for other construction materials as designated by the ASTM test standards identified below. The following photographs provide an indication of the procedures employed during Tire Log testing. ASTM D 1188 – 88 Standard Test Method for: Bulk Specific Gravity and Density of Compacted Bituminous Mixtures Using Paraffin-Coated Specimens. ASTM D 5321 – 92 Standard Test Method for: Determining the Coefficient of soil and Geosynthetic Friction by the Direct Shear Method. ASTM D 882 – 291 Standard Test Method for: Tensile Properties of Thin Plastic Sheeting. ASTM C 293 - 94 Standard Test Method for: Flexural Strength of Concrete (Using simple beam with center-point loading)  Due to the strength of the Tire Log as designed by RTP it was found unnecessary to increase the flexural strength of the Tire Log for the construction of the retaining wall or the other applications that were experimented with during this project. While the flexural strength can be increased by using fiberglass a simpler and more cost effective method to achieve the same goal was developed during this project. This new method, as well as the fiberglass method, could be effectively utilized for those applications that do require a Tire Log with increased flexural strength that meets or exceeds that of comparable wooden timbers. Our patent will likely be amended to include this enhancement which may be the focus of a future Research and Development project.  Tire Pole prototype encased in fiberglass.    “The inherent characteristics of this unique building material make it capable of withstanding deformations that would crack or break conventional building materials. Furthermore, the testing of individual units demonstrates that after test loads are released the product is capable of returning to its original shape. Due to this “bend but does not break” characteristic of the tire log it may be well suited for building applications that are prone to severe and unusual stresses/shock forces such as explosions, earthquakes, wave action, water and ice pressures, flying debris and vehicle impacts.” Click “Tire Log” Project Engineering Report for the complete report. | |
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