| WHOLE SCRAP TIRES |
WEIGHT |
TIRES/TON |
| Passenger |
20 lbs each |
100 tires/ton |
| Truck |
100 lbs each |
20 tires/ton |
| *10 passenger tires or 3 truck tires per cubic
yard |
| BALED
TIRES (cubic yard size) |
| Passenger |
100 tires per bale = 1 ton |
| SHREDDED
TIRES |
| 700 lbs per cubic yard |
| 60 to 80 cubic yards = 28 tons |
| COMPARISON
WITH CONVENTIONAL MATERIALS: |
| Substance |
Weight per Cubic Foot |
| Cement, portland, set |
183 |
| Clay and gravel, dry |
100 |
| Earth, dry, packed |
95 |
| Earth, moist, packed |
96 |
| Sand and gravel, dry, packed |
100-120 |
| Sand and gravel, wet |
118 |
| Water |
210 |
| Water, sea |
62.428 |
| |
|
| Excavations in Water: |
64 |
| Sand or gravel |
60 |
| Sand or gravel in clay |
65 |
| Clay |
80 |
| River mud |
90 |
| Soil |
70 |
| Stone riprap |
65 |
| |
|
| Rubber block (weight 2,000lbs, 2.2 CY) |
34 |
| |
|
| As can be seen from the
above data, rubber blocks made from compressed scrap tires
are from one-half to one-fifth the weights of conventional
materials used in road construction.
In wet areas where marginal soils are present, the blocks
can be used as a sub-grade base which will effectively float
over the marginal areas. Conventional materials can then be
applied over the blocks. |
This project investigated the structural properties of two
types of tire bales/earth block manufactured by Cordova &
Sons. The intent of the project was to determine, through a
series of compliance testing, the axial stiffness of the tire
bales. A secondary goal of the project was to perform a creep
test on the bales.
|
| Tire
Bale WITHOUT Steel Cable Support |
| Max Load |
Residual Deflection |
| 75 kip |
3.1 inches |
| 98 kip |
1.9 inches |
127 kip |
2.1 inches |
| |
|
|
| Tire
Bale WITH Steel Cable Support |
| Max Load |
Deflection @ Max Load |
Residual Deflection |
| 105 kip |
8.2 inches |
2.5 inches |
| 114 kip |
7.1 inches |
0.9 inches |
| Summary
of Test Results: |
| Type of Test
|
Maximum Load
|
Average Ultimate
Deflection (inches) |
Time of Ultimate
Deflection (if applicable) |
| Creep |
88,000 lbs |
8.06 |
4320 min. (72 hours) |
| Load Deflection |
338850 lbs |
11.45 |
N/A |
