Cost Comparison
After Proof Roll Fails: What is the Remedy and What Does “It” Cost?
A comparison of three stabilization methods based on 5,000 square yards.
Option 1. Stabilize in-place soil at a 12 inch depth with a 10% Class “C” fly ash.
| Dust free application of fly ash at the geotechnical designed pounds per square yard with cross auger distributor. Blend fly ash uniformly with in-place soil utilizing a pulvamixer equipped with a spray bar for application of required water to obtain proper moisture content of the soil-fly ash mixture. Complete initial compaction with padded drum roller. | $5.75 SY | $28,750* |
| Finish grade to required lines and profile, Seal surface with smooth drum roller. | $1.00 SY | $5,000 |
| Total $33,750 |
Option 2. Excavate to a 6 inch depth, place DOT approved geogrid with 6 inches of roadstone.
| Over excavate 833 CY, haul off site | $5.00 CY | $4,165 |
| Purchase Tensar BX-4100, allow for 10% material overlap (5500 SY) | $1.65 SY | $9,075 |
| Labor for geogrid placement (5500 SY) | $0.55 SY | $3,025 |
| Purchase, haul and place 1417 ton of roadstone on site | $16.00 T | $22,672 |
| Spread and compact roadstone | $2.00 T | $2,834 |
| Total $41,771 |
Option 3. Excavate to a 12 inch depth, place a 12 inch depth of compacted roadstone.
| Over excavate 1666 CY, haul off site | $5.00 CY | $8,330 |
| Purchase, haul and place 2835 ton of roadstone on site | $16.00 T | $45,360 |
| Spread and compact roadstone | $2.00 T | $5,670 |
| Total $59,360 |
Advantages of Soil Stabilization
- More economical
- Significantly improves CBR values
- Reduces utilization of natural resources(aggregates and fuel)
- Eligible for LEED credits
- Shortens number of workdays
- Increases freeze/thaw durability of soil
- Utilization of recyclable materials
- Provides for reduction of pavement thickness
- Extends pavement life
Let GEOMAX perform value engineering for your project.
BETTER SCIENCE. SOLID RESULTS.
*For comparison purposes, price may vary according to dry density weight of soil
