It is important that the role of the Endurazyme Export  supervisor is clearly defined for the duration of the project.  It must be remembered that the main objective of the supervisor is to ensure that the Endurazyme Export is applied to the soils evenly and properly.  The supervisor is also there to ensure that the materials are being used optimally in relation to their engineering performance.  In no way should the presence of any testing equipment give the supervisor the right to over rule or ignore the advice and opinions of the client road building team.

It must be remembered that invariably these people have a good working knowledge and understanding of how these particular materials react and this information should be used advantageously.  Monitoring equipment and testing systems that the supervisor uses are there to augment this knowledge and to produce empirical data of the work done that day in order for the road to be evaluated objectively.  Obviously, if basic engineering fundamentals are being ignored the supervisor is in a good position to bring the facts to the attention of the clients work supervisor.  By having objective results and empirical evidence it is then possible to isolate the source of problems if there are any.  To quote Mr. R H A Cochrane, author of Soil Mechanics and the Soil Engineer, 

"Density tests are, as a rule, a luxury as a routine control test on the road construction.  Heavy rollers are a very good proving tool.  After all, tests are only a tool to aid the judgment of engineers and not a substitute for competent engineering supervision"

The main duties of the World Enzymes Australia & Representative are as follows:
 

•  To ensure the Endurazyme Export is evenly distributed throughout the materials.

•  Monitor the moisture content of the soil on an ongoing basis.

•  Ensure that the materials are adequately blade mixed prior to compaction.

•  The required or specified densities are achieved throughout the project.
• Liaise continually with work supervisor and crew stating clearly what is required so that the job  runs smoothly and efficiently for all parties concerned.

Application Procedure

It is important to decide the amount of work that will be undertaken in any given day.  Once decided the following is the method in which Endurazyme Export will be applied and the road constructed.
 

•  Scarify the existing pavement
•  Blade into windrows
•  Wet the base with the Endurazyme Export and water mix
•  Continue to blade mixed materials while adding  Endurazyme Export and sufficient water to  achieve optimum moisture
•  Compact materials to required or specified densities
•  Trim and slurry the surface using 1000:1 solution of water:     Endurazyme Export for final finish

  
  As the above procedures are consistent with normal water binding procedures the work crew should have little difficulty with the steps involved.  What is critical for the supervisor to ensure is that the Endurazyme Export is added evenly into the soils.  One of the first jobs undertaken is to ascertain how much water will be required for the day.  Then  the crew are to be instructed as to how much and from which water tanks the Endurazyme Export goes into, using the following parameter as a guideline.

  Endurazyme Export is to be applied using as much of the water needed on the day as possible but also in a fashion that ensures that the soils cannot reach optimum moisture prior to  all of the required Endurazyme Export being used.  This may sound complicated.  It is hoped that the example given below will simplify this guideline. 

  Metric Guide
  1 Km  X  6.5 m  X  150 mm  =  975 m3        compacted material

  Assume Density  =  1.98 t/m3  (from MDD test)
                  =  1,930.5 tonnes of material

  If optimum moisture content = 10 %
                 = 193 tonnes of water

  Let us assume insitu moisture of 7%  =  57.9 tonnes needed to reach O.M.C.
                  = 58,000 litres approx.

  If water carts hold 10,000 litres
                 = 6 trucks of water/km

  If weather is expected to remain fine then put required Endurazyme Export   i.e.  27.46 litres into first 4 trucks

  Use water only to bring soils to optimum moisture content thereafter

  It is always a good idea to bring the crew together before hand if it is their first application to explain the process to them.  It is also critical that the method of operation of the team is not changed or altered unless there are serious flaws in their road building techniques.  This is a highly unlikely scenario, but it has been known to happen.  If their process is changed there will be obvious effects on overall efficiency.  Only change those parts of the process that must be changed.

  As soon as the road has been boxed out it is then time to commence the use of Endurazyme Export and water (depending upon the in-situ moisture, the water truck may often make a small number of passes to help loosen the materials or the boxing out process).  The main task for this part of the day is to ensure that the water trucks are making even passes so that the Endurazyme Export penetrates the soil as evenly as possible.  Moisture checks are very important as atmospheric conditions can influence moisture retention in the soil quite significantly.  Once the materials have been blade mixed satisfactorily and wetted uniformly, the compaction process can begin.  You may find that each crew has its own style of road building process.  Some crews will wait and put more energy into the mixing process than others.  Consequently, they may not bring on the rollers until much later in the day.  The more uniform the wetting and mixing, the less chance there is of lamination.  Once the materials have been laid on the road and the compaction has started it is then time to grid out the road and to take a series of compaction values as dictated by the laboratories testing.  You may find the CIV chart in appendix 2 useful as a guideline.  Depending on the circumstances two to three sets of these will be taken over the space of a day.

  When the soil is compacted to specified values and at optimum moisture content we can now be assured that the benefits of Endurazyme Export will be optimised.  Prior to the finish of every day it is important that each section of the project is checked to ensure that an adequate camber has been built into the road and the water run-off is optimised.  It is always good to fix any potential drainage problems which might arise as a result of blockages in the table drains.  It is now common practice for most road crews to slurry finish unsealed roads to bring the fines to the surface thus creating a natural seal.  It is useful to include  Endurazyme Export in the slurry tank as mentioned above.  It will help consolidate the fines on the surface but do not over wet at any stage. 

  PERFORMANCE EVALUATION

  Because of the objective data collected to date, periodic visits to the site are to ensure that proper evaluation of the road performance is assessed.  Obviously, visual inspection is the first tool used to evaluate performance.  Occasional testing with the Clegg hammer is useful for comparison of strength increases over time. If the road is earmarked for sealing regular CIV inspection will highlight any potential trouble spots which may develop over seasonal variation.  This will allow for immediate action to be carried out prior to expensive sealing taking place and subsequent potholing.  Annual monitoring is also critical in situations where the break even point is a period of time after the completion of the job.  Obviously, continual evaluation is also part of customer service and relationship development.  A report on each project should be completed and returned to the client within three to four weeks of completion.  

  The end