Is there any effect when Perma-Zyme is mixed with any other organic material e.g. CaO or CaCO3?
As time goes on will Perma-Zyme reduce or increase its bonding strength? Will the road come out with cracks or become fragile?
PCracking occurs as a result of two factors: (1) If the road material contains a high percent of expansive clays – having a high shrink-swell factor. When the road is completed and dries out some cracking will appear. This reduces the effectiveness of the roads stability, however we have seen roads showing this condition that have performed very well – but with reduced life. (2) Soft sub-base may not support the treated base under wheel loads i.e. expansive clays. The bearing capability of the road is insufficient. This is corrected by increasing the thickness of the road base.
When the Clay fines (minus 299 mesh) exceed 25% or are highly expansive some surface cracking will occur. Generally the cracks are superficial, often filling in with road particles during normal traffic use. Generally this condition is referred to as “Alligator Cracking” and does not significantly affect to stability of the road base./p>
Rain or other moisture will moderately swell the clay fines and the cracks will close. If the clay material is highly expansive, then the amount of fines should be kept low to reduce the amount of cracking.
Prior to placement of any surface material, the Perma-Zyme treated soil should be lightly sprayed with a dilute solution of water & Perma-Zyme to assist in the bonding of the new surface material (i.e. Asphalt) to the road base. Moisture will close many of the cracks.
Reflective cracks should not migrate upward through the asphalt, unless the clay fines are in the upper range and site conditions see radical sub-surface ground moisture variations.
Proper drainage will reduce ground moisture and keep cracking to a minimum.
After compaction, what is the ratio of expansion? Will extreme weather affect the road (hot or cold)?
When the road contains more than 20-30% clay, will the road surface become too slippery and lose traction?
In many applications surface treatment is applied as part of the overall design. This provides a wearing surface for traction, moisture protection, and greater overall strength. Cost and availability of materials are the primary factors affecting the type of surface treatment, if any.
Perma-Zyme works well with soils that have a clay content passing a 200-mesh screen between 18% to 30%. This range of fines has been indicated as an acceptable range for road building material.
The State of California Transportation Dept. has recently tested Perma-Zyme in soil that has a high clay content and found approx. 27% increase in unconfined compressive strength using Perma-Zyme. The soil tested was substantial clay with over 95 % passing a 200-mesh screen. The clay is classified as ‘FAT CLAY’.
In road building it is desirable to minimize excessive clay content. Under moist conditions the surface will not have proper surface friction and excessive plasticity may be present.
Rex Funk, Emery County Road Supervisor, Utah has experience using Perma-Zyme for over five years, he has reduced his road maintenance by 25% for example where a road typically required bimonthly grading activities, and periodic re-gravelling he used Perma-Zyme to stabilize the road and then placed a thin “chip seal” over the surface. A portion of the road was left bare. Substantial cost saving were obtained and the “bare section of road did not require any maintenance for over 16 months. This road is in a rural location in Emery County, however it receives a wide range of traffic.
In Utah, there are some roads that have been in use for over 8 years with no significant maintenance. Photos of the road are in the Perma-Zyme Manual (Jerome County).
How long will road last when used with Perma-Zyme?
• Climatic conditions such as temperature ranges and rainfall.
• Type of soils used in construction.
• Road design – crowning, drainage & other engineered parameters.
• Type of vehicular traffic, speed and degree of usage.
• Wearing surface applied (if any).
• General maintenance – frequency and quality.
We have seen Perma-Zyme treated roads retain their integrity over long periods than previously experienced by road departments. for example a road in Idaho, USA has been in continual use for over eight years, with very little maintenance. Other geographic areas have reported substantial reduction in road maintenance by over 50%. Perma-Zyme treated road bases last longer.
Can temporary roads be constructed using less Perma-Zyme?
What kind of equipment and method of construction is used to work on pond slopes?
Ponds generally are constructed using water trucks; Bulldozers, Motor graders and usually sheep foot compactors (due to high clay content). Perimeter berms are compacted in lifts to rough dimensions and bladed to finish elevations. Sometimes a bulldozer is used for this work due to the steepness of the slope.
Various combinations of equipment are used in difficult ponds. Bulldozer pulling a sheep’s foot compaction drum, or a clamshell excavator being used for grading the side slopes. Equipment availability often dictates what is built in the field.
Is compaction required when using Perma-Zyme?
Spraying Perma-Zyme on soil without any compaction will not affect a change in erosion. The soils ability to resist erosion is a function of the mineral makeup of the soil and compaction (or density).
Will Perma-Zyme affect plant life if there is contact?
What is Fyre-Zyme?
What type of enzymes are in Fyre-zyme?
What if it is determined the contaminated soil is sterile?
Does Fyre-Zyme increase the oxygen content in the soils that are to be treated?
Does the presence of heavy metals in the soil have any detrimental effect on Fyre-Zyme?
What is the shelf life of Fyre-Zyme?
Can Ag-Zyme be used when fertilizing?
What type of plants can Ag-Zyme be used on?
How often should Ag-Zyme be used?
Can Ag-Zyme be used in conjunction with pesticides?
Does Ag-Zyme require special handling?
Which is the maximum recommended time between spraying with Ag-Zyme and irrigation?
What are the general applications of Bacto-zyme?
Is Bacto-zyme hazardous?
What is the process for odor control for Animal odors?
How do you use Bacto-zyme for grease traps and septic tanks?