STRATEZYME required 1 gallon = 3.785 liters
1 liter per 33 cubic meters 1 cubic yard =0.7646 cubic meters
1 gallon per 165 cubic yards 1 foot = 0.304 meters
1 cubic yard = 27 cubic feet 1 mile = 5,280 feet
1 kilogram = 1 liter water 1 mile = 1.853 kilometers
1 gallon = 8.3 pounds water 1 cubic meter = 1.08 cubic yards
STRATEZYME is easy to apply and requires neither special equipment nor special application procedures. It can be used with either reclaiming machines or applied with regular road building machines. STRATEZYME should be used with soils that contain approximately 20% cohesive fines. Then it is mixed with water and used for compaction during normal road building techniques. A typical application to stabilize a 6-inch existing or new road base is presented as follows:
1. If the existing roadbed is too hard to blade, scarify to the required depth. Normally this should be done dry for better traction.
2. Add one gallon of STRATEZYME concentrate to the required amount of water needed to bring 165 cubic yards of material up to optimum moisture. The amount of water needed will depend on how wet or dry your material is. With top loading water tanks, always fill the tank with water first, and then add the STRATEZYME. Failure to do this will result in a tank full of foam.
3. Spray the STRATEZYME water solution over the road surface and start the blade mixing. 15 gallons of STRATEZYME will treat one mile 25 feet wide to a depth of 6 inches. If you misjudged the water and get the material too wet, blade to dry. If the material is too dry, add plain water. After thoroughly mixing, leave the soil material in a windrow overnight to promote total STRATEZYME absorption. We recommend this whenever possible for better compaction results with less effort.
4. If the road base is too dry the next morning, or after the material is thoroughly mixed and ready to lay, spray the surface with a STRATEZYME water mixture of one gallon to 10,000 gallons water (approximately one pint to 1,200 gallons water) before you pull it out of the windrow. Always start to lay the material on a damp floor. Pull the material out and lay in 3-inch lifts. Start compaction immediately. In sub-base fill or pond areas, a sheepsfoot works fine; but usually a steel or pneumatic roller works best for finished roads. Continue compaction while you shape and dress the surface with a blade. Be sure to crown the surface to promote water drainage. Even while laying and compacting, if your material dries too fast on a hot day, a light mist of STRATEZYME treated water (1:10,000 gallons) can be applied, but you must be sure to stay 2% to 3% below Optimum Moisture. Continue to compact until the desired density is reached. Vibratory rollers may be used, but turn the vibrator off when finishing so that no fracturing occurs. The road is now ready for use. If you foresee heavy, high-speed traffic, involving spinning or skidding wheels, you might consider closing the road until the material has had a chance to cure for 2 or 3 days. Normal traffic will not harm it.
5. If an asphalt surface or other permanent-wearing surface is to be added, a better bond can be obtained by moistening the surface with a spray of STRATEZYME and water solution (1:10,000 gallons). This permanent surface can be applied at any time after a 3-to-5-day curing period under good weather conditions.
Mine haul roads are often constructed with native site soils containing a wide gradation of materials. Often there is a high content of fines (200 minus mesh) that in the past have caused stabilization problems. STRATEZYME assists in binding fines together with larger material into a dense well-compacted material having a high degree of stabilization and higher tensile strength than non-treated roads. Also, roads treated with STRATEZYME will resist water penetration. Benefits include reduced maintenance and increased utilization of existing site materials.
· efficient use of water due to easier penetration into the soil—base material
· achievement of greater density after compaction
· increase in tensile strength
· unconfined compressive strength
· less dusting than non-treated roads
One gallon of STRATEZYME will treat 165 cubic yards of road base material. It is added to the water truck and sprayed onto the material prior to compaction.
The water to STRATEZYME ratio will vary depending upon site conditions and existing moisture in the base material.
Construction of the road should be done in lifts not greater than 6” – depending upon the type of compaction equipment to be used. It is recommended that 3” (8 cm) lifts be used, thereby insuring proper compaction. Attention MUST be given to moisture content and blending for maximum distribution of STRATEZYME throughout the road material.
STRATEZYME is used in some dust control applications. It is applied at a dilution rate of 1 gallon STRATEZYME to 10,000 gallons of water. This has been very effective in reducing dust and decreasing the total amount of water required for dust control.
General guideline discussion only
Refer to qualified oil-asphalt representative for further information
Either Emulsion (CRS) or MC asphalt can be used. “Emulsion” asphalt is cut back or diluted with water and is shot at a temperature of around 106º F (70º C). “MC” asphalt is cut back with diesel fuel or other petroleum products and is shot at temperatures of 225º F (107º C). The advantage of one type over the other is debatable, but generally speaking, MC asphalt will penetrate dirty gravel better than Emulsion asphalt. However, MC asphalt has a tendency to bleed off more if the balance of oil to gravel is not correct. When using MC asphalt, the first coat is thinner (usually MC 800), and the second coat is heavier (MC 3000).
When applying Emulsion asphalt, use the same CSR-2 weight for both layers. There are also available variations of CRS-2, some quick-dry; some rubberized, some hard. Check with your supplier to see what is available in your area. Also, when using Emulsion asphalt, you need approximately 29% more material to obtain the same asphalt thickness, to offset drying where water evaporation reduces the overall weight.
The STRATEZYME road surface should be prepared at least three (3) or more days prior to applying the asphalt. The surface should be smooth, hard and dry. Dress any imperfections before applying the asphalt, as they will extend up through the finished surface. A smooth base is essential.
After this dries or loses its sheen, apply the oil at a rate of approximately 0.4 to 0.5 gallons of oil per square yard of surface.
Then, immediately apply a layer of ¾” clean gravel at a rate of 120 to 125 pounds per square yard and compact with the compactor.
After the first layer of oil and gravel has been rolled down, pull a non-rotating drag broom over the surface to smooth out any roughness cause by the chip spreader, truck or roller. This will insure a smooth surface for the second layer.
Lay down the second layer of .35 to .40 gallon oil/sq. yd and ½ inch of ½” to 3/8” chips and compact. The gravel chips must be fractured rock to stay in place. Pea gravel cannot be used.
If you have the proper amount of oil, gravel and chips, the oil should penetrate both layers and bond together. Too much oil will cause bleeding; too little oil will not allow proper bonding.
For each road construction site this is minimum equipment to have available for the STRATEZYME application:
· Motor grader
· Vibratory Roller (large size, 15 ton+)
· Pneumatic Tire Roller (recommended – 15 ton+)
· Sheep-foot Roller (recommended – 15 ton+)
· Water Truck with pressurized spray bar (have backup truck if possible)
· Pulving Mixer or Rotary Hoe (RM 250)
· 2 Dump Trucks for hauling aggregates
· Site Surveying and Staking
· Nuclear Densometer or some type of moisture testing equipment to test the moisture on site throughout the construction process.
For the chip & seal, have the following minimum equipment available for each site:
· Water Truck
· Automatic Broom Sweeper (or men with rakes, brooms, etc.)
· Dump Trucks for spreading aggregates chips. (Have gates fitted with a spacer bar to allow aggregates to spill out slowly as truck back up over oiled area.)
· Hot Bitumen Oil Spreader Truck
· Vibratory Roller (medium to large size12-15 ton+)
· Pneumatic Tire Roller (optional)
· Automatic Chip Spreader (if available)
There should be a skilled equipment operator for each piece of equipment identified above. In addition, if a chip spreader and/or automatic broom is not available, have 4-6 laborers available with shovels and push brooms. Even if the chip spreader and automatic broom sweeper are available, have a minimum of 2 laborers on site. In addition, a skilled soils/road technician should be on site as well as a road superintendent.
Water to be added to reach optimum moisture compaction
IMPORTANT: Determine the approximate soil moisture before starting. Estimate optimal moisture, and then subtract existing moisture to calculate water needed.
Example field calculation for 8cm lift
Volume 8 cm x 8 Meters ------------------------------------------640 Cubic Meters
Material Weight 640 Cu Meters x 1,600 Kg/Cu M ---------1,024,000 Kg/liters
Additional water needed to achieve optimum moisture
(8% moisture x 1,024,000 liters-----------------------------------81,920 liters water
Safety factor (avoids excess water) 70% x 81,920----------57,344 liters water
STRATEZYME (1 liter treats 33 Cu M of soil)
Liters required =19 liters STRATEZYME
640 Cu M road base material divided by 33 Cu M
STRATEZYME dilution rate this example only (DRY CONDITIONS)=3,080:1 STRATEZYME
STRATEZYME Dilution Table – water to be added
Water to be added to reach Optimal Moisture for Compaction
1. Determine (estimate) water to be added to soil, then determine capacity of water truck and add STRATEZYME according to dilution rate calculation (estimate water slightly below amount needed).
2. Apply water and STRATEZYME to base material, wetting surfaces evenly.
3. Blend and mix STRATEZYME and water into soil with grader blade or recycler. Several passes may be required using a blade.
4. Observe if road base material has enough moisture for compaction. (A hand sample should make a firm ball.)
5. If more moisture is needed, add plain water and re-blend.
6. Compact material to maximum density, usually 5 to 8 passes.
7. Repeat step 6 for the top lift (layer).
8. If first lift surface is too dry, dampen with a small amount of water, before the second lift is extended across the road and compacted.
For preparing and analyzing pavement sub-grade, sub-base and base course materials containing STRATEZYME in a materials testing laboratory.
This test method protocol has been developed in response to requests for proper laboratory procedures when testing road base materials treated with STRATEZYME. It should be noted that no laboratory sample would simulate the actual strength characteristics exhibited in the field with full-scale STRATEZYME treated base materials. Therefore, if one is to obtain a truly valid approximation of the relative strength of treated material, it is recommended to test STRATEZYME treated road base by obtaining fully cured samples from actual road-beds. Test methods described below will reference the American Society for Testing and Materials (ASTM). Test methods may be found at the ASTM Internet site: http://www.astm.org/.
1. Preparation of Laboratory Sample
Prior to any laboratory testing, a suitable sample must be prepared. It is recommended to prepare a minimum soil/aggregate mix of five (5) gallons (18.9 liters). All (100%) mineral aggregate must be crushed (e.g., cracked rock faces). That portion of aggregate passing the No. 40 sieve should be slightly plastic (0<PI<6) when tested in accordance with ASTM Method D43 I 8-9 Sa. Any humus material and/or other organic material (i.e., roots, moss, leaves, etc.) should be removed from the test material. The dry mineral soil/aggregate material should be uniformly graded with the gradations specified in Table 1, following ASTM Method C136-96a.
TABLE 1 - INITIAL TARGET GRADATIONS
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