The Superior Stabilizer for

Roads - Pads  - Trails - Artificial Turf Base - Erosion and Dust Control
The G.M. Boston Company International. LLC

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Frequently Asked Questions About PX300

What is the composition of PX300?

PX300 is a special blend of enzymatic polymer emulsions developed by the G.M. Boston Company.  Development began in 1998 and several improvements have been made to the formula to increase its ability to bind soil particles, making the soil very dense and  resistant to water penetration.  When used for various soil stabilization projects, PX300 is diluted with water

What kinds of   soil will PX300 stabilize?

PX300 can be used with a wide variety of soil types, from sandy to hard clay.  This versatility is accomplished by varying the dilution rate of PX300 to water in the application process.  More concentrated product/water mixture will stabilize very sandy soil, while dense clays will require a less concentrated product/water formula to fully stabilize.  Here are some examples of soil types that PX300 can effectively stabilize:

  • sandy soil

  • gravel

  • silty soil

  • volcanic ash

  • clay

  • crushed asphalt

  • crushed concrete

  • combination/mixed soils

To learn how roads are built with PX-300, go to the  Roads, Trails, Pads page

To learn about stabilization techniques for various types of soils, go to the  Stabilization Info page

Does rain, snow or hail cause deterioration to roads, trails or pads constructed with PX300 stabilizer?

Roads constructed with PX300 are highly impermeable and highly compacted.  We actually have  achieved permeability levels of 2 x 10-9 cm/sec under ASTM 5084 and compaction results as high as 95%.  Because potholes result from water penetration, the water resistant quality and density of PX300-bound surfaces eliminate the need for  constant road maintenance after seasons of rain and storms. 

Can PX300 stabilized soil  withstand freeze/thaw cycles?

Yes!  PX300 applications are not affected by freezes closely followed by thaws.  The impermeability of  PX300 treated roads means that no cracks due to standing water during thaw periods will undermine the integrity of the surface. 

As an example, a PX300 road base finished with a chip-seal surface in the County of San Bernardino, CA, has withstood 5 years of freeze/thaw weather without any maintenance needed.

Does heavy traffic affect PX300 stabilized roads? 

Roadbeds and unpaved roads constructed with PX300 are highly durable.  In laboratory testing, PX300/water/soil combinations have produced unconfined compressive strenght levels of 1233  LBS/PSI (ASTMD 2166).  Such strength will endure heavy traffic easily. 

How does PX300 save  construction and maintenance costs?

There is no need to import base material, if PX-300 is used in road or pad or field construction. 
PX-300 is mixed with onsite soil to produce a solid base.

Adding PX-300 to base material reduces costs in two ways due to its extremely low; permeability.

First, the low permeability of the PX-300 base  reduces the occurrence of potholes, thereby saving on maintenance costs.

See  PX 300 Permeability Lab Test results on the Lab Tests Page

Second, if an additional asphalt wear surface on a road is desired, the asphalt surface can be much thinner than is required for traditionally constructed roadbeds. Reducing the amount of asphalt means big savings. In some situations, a chip-seal surface is all that is required, resulting in additional savings.

In other situations, no additional surface is desired and is not needed.  For example, Px-300 was used to construct a one-half mile road for the County of Riverside, CA, over three years ago, without any additional surfacing.  The road has carried at least 500 cars/day and has held up entirely satisfactorily during this time period without additional maintenance.  

Will PX300 harm the environment?

No.  PX300 is a totally environmentally safe, non-toxic chemical.  It will not harm plant, aquatic, or animal life.  Recent leachate tests found that no harmful substances leached into surrounding soil from applications of PX300..  See the page on LAB TESTS to see the actual results of the Leachate tests.

Will PX-300 harm plants, animals or aquatic life?

No..  PX-300 is entirely non-polluting and safe.  It is non-toxic, non-carcinogenic, non-flammable, non-combustible.  It can be safely used for hydro seeding.  We have included the PX 300  MSDS on another page.  

How does PX300 control dust and erosion?

When a very dilute solution of PX-300 is sprayed over dusty soils, the product binds the soil to a depth sufficient to trap surface particles that would otherwise be blown by the wind or washed away by rain.  

The crusty cover will last throughout several seasons, if not disturbed.  However, the surface can easily be broken up for use in agriculture or construction operations.  Px300 dust applications help contractors, and governments avoid sanctions for air quality violations that often crop up during construction projects.  

PX-300 is compatible with hydro-seeding, because the PX-300 treated soil allows plant life to grow  and enables germination to take place uninhibited by wind or water erosion.  

Will PX-300 change the appearance of the natural  soil material?

PX-300 is white in color, but will turn transparent as it dries.  It therefore does not give an industrial look to native soil, making it effective for nature trails and rural roads.  In this regard it is superior to geo-membranes or other geo-synthetic fabrics.  The addition of a chip-seal wear surface gives the project a more urban look.  

What is the cost of  a PX 300 application?

For pricing information based on your requirements, contact us by phone or e-mail.  

G.M.Boston Company INTL, LLC
412 Fullerton
Newport Beach, CA 92663
Tel: (562) 592-0836
FAX: (949) 722-6799
Craig Hoad -

Greg Boston -