One of the most common questions we receive is “How long will Earthbind last on my road”. Unfortunately, this is a very complicated question to answer concisely due to so many variables that can affect longevity. It is important to consider the definition of “last or lasting”. To some, this may mean the point where dust becomes a nuisance, to others it may be the point where any visible dust at all is noticeable, and others may consider the point where the road no longer looks “paved” even though dust is maintained adequately. Normally, dust control does not abruptly end at a certain time interval but rather slowly diminish over time.
Earthbind residual by itself can last for years before disappearing completely. However, longevity on an unpaved road which is driven on, is affected by many factors such as soil/aggregate type, traffic characteristics, etc. Since most roads are maintained (graded) at least annually, and/or snow plowed during the winter months, we normally recommend a concentration that lasts 3 to 6 months to preserve fines during the dry season. However it is important to know that Earthbind can control dust endlessly with proactive maintenance applications. In fact, as long as the residual Earthbind is not graded or snow-plowed off, there will be product residual remaining that will add to subsequent maintenance applications, therefore building up inventory, resulting in an accumulative affect. Over time, less and less Earthbind will be required to maintain fines in the road keeping, them from becoming fugitive dust.
To answer the question regarding longevity as best as we can, we look at two main characteristics:
The road characteristics; and
Earthbind application concentration and frequency
Overall, the amount or extent of Earthbind’s effectiveness as a dust palliative for unpaved roads varies upon:
- Traffic characteristics
- Road surface conditions
- Road surface material type
- Road base/sub-grade characteristics
- Road geometry
- Road drainage characteristics
- Road maintenance characteristics
- Climatic conditions
- Application intensity
- Product dilution ratio