Road construction under optimum conditions should consider the following:
1. Use materials that are structurally sound. Road Base materials using Permazyme should have a gradation mix (size distribution) that will result in good load bearing values and contain approx. 18% to 30% non-granular fines (-200 mesh size and are cohesive in nature). Many roads have used material outside design standards, however prior to construction field testing was necessary for determining suitability, and upon completion excellent results were obtained. Some clays and “fines” are silty in nature and are not useful for road construction. Also, excessive fines can cause problems as a result of high plasticity and/or low bearing value, in which case 20% dirty crushed rock ¾ to 1 inch minus or #2 road base may be required.
2. Proper moisture must be maintained during compaction. Permazyme works best between 2% - 3% below optimum moisture. Do not try to compact above optimum moisture.
3. Generally, roads should never be compacted in lifts greater than 6”. Lift thickness is determined by the size and type of compaction equipment plus the type of material being compacted. Sufficient compactive effort must be maintained during road construction to obtains maximum density. Less compactive effort will be required using Permazyme 11X.
4. The road should be allowed to cure prior to use if possible (and final testing). However, the road can be used sooner if necessary. Drying of the base material will create less plasticity, decreased permeability and greater strength.
5. Treated soil must dry thoroughly before asphalt or other topping is applied. On many roads, additional surfacing is unnecessary for years of normal use.
STEPS
Step 1. Blade or rip the existing road to a minimum depth of six inches and windrow the loose material if necessary. Then, if the road requires greater depth,you can work the material in lifts. If additional aggregate is needed, use less expensive material (with more fines). Check the overall gradation of the material to insure it is within the design limits. Overall depth to be treated depends upon designed axle load requirements.
Step 2. For each 150 cubic yards of road base material add one gallon of Permazyme 11X to the amount of water you need to obtain optimum moisture. Spray both the bladed surface and the windrow to obtain optimum moisture. Blend the Permazyme solution into the soil with a ripper, disc, mixer/rototiller or a grader blade, working the soil & aggregate back and forth. If the material is too wet, blade dry. If too dry, add a Permazyme solution of 1:10,000 to bring the material up to optimum moisture. After thoroughly mixing, spread the material to grade or the road material can be left in a windrow overnight to allow complete moisture absorption. This will result in a better compaction with less effort.
Step 3. Extend and crown the road surface with a blade. If your material dries out on a hot day, spray again with a diluted Permazyme mixture. Compact with a compactor such as a sheepfoot or pneumatic roller. Vibratory rollers may be used for the first and second passes, however further compaction should be done without vibrator action to avoid cracking. Compact in 3” or 8cm lifts (layers) to insure maximum compaction.
After allowing the road surface to dry (cure), it is ready for use.
If an asphalt or chip seal surface is desired, better bonding will be achieved by moistening the surface with a diluted application of Permazyme and water at one to ten thousand (1:10,000) dilution rate. This surface application may be applied anytime after a three (3) day curing period.
Permazyme’s formulation increases the wetting action of water for increased penetration to assist compaction and obtain greater soil densities. Also, Permazyme accelerates cohesive bonding of soil particles, creating a tight permanent stratum. Unlike inorganic or petroleum based products with their temporary action, Permazyme creates a dense and permanent base which resists water penetration, weathering and wear. In normal road construction methods, compaction in the 90 percent range is normal. With Permazyme, compaction of up to 105 percent is often obtained.
PERMAZYME IS USED IN CONCENTRATED FORM MAKING IT VERY COST EFFECTIVE.
| ONE GALLON OF PERMAZYME 11X, WHEN ADDED TO THE REQUIRED AMOUNT OF WATER FOR COMPACTION, TREATS 150 CUBIC YARDS OF MATERIAL (1 LITER / 30 CU. METERS). |
| FOUR 5 GALLON DRUMS OF PERMAZYME 11X WILL TREAT ONE MILE OF ROADBASE 25 FEET WIDE AND 6 INCHES DEEP |
Permazyme is cost-effective in both reducing construction costs as well as reducing long term road maintenance costs
Since Permazyme uses the non-granular, cohesive fines contained in the road base as a binder, a less expensive, higher “fines” content base material may be used. Permazyme saves you money in construction by allowing you to use available soil in the construction area instead of hauling in clean base.
Maintenance costs are greatly reduced since the cured Permazyme base reduces moisture penetration into the road base. The increased density and reduced permeability significantly reduces washboarding and rutting.
In addition to creating a new and better way of building and maintaining roads, Permazyme is being used successfully in construction of lake beds, mine leach pads, ponds bottoms, land fills and other containment enclosures.