ROADBOND EN 1 was first tested in 1991 to eliminate corrugations on steep grades along Jethro Road.

The project’s success has lead to over 19 years of use and hundreds of thousands of dollars in savings.

ROADBOND EN 1 is a proven product with a history spanning 3 decades.

The U.S. Forest Service began searching in 1986 for a reliable and cost effective way to stabilize their unpaved roads in the Ozark-St. Francis National Forest. These unpaved roads are located in mountainous terrain that receives fifty inches of rain each year and six to eight weeks of freezing and thawing temperatures. The roads are required to handle heavy logging traffic and forest visitors. Their objective was to find a product that would increase the soil strength while securing surface aggregate to the traveled section of the road.
ROADBOND EN 1 achieves this and more by breaking down the naturally occurring cohesive materials in the soil. The ROADBOND EN 1 solution is mixed into the base material and compacted. The liquefied mineral and clay particulate then cure, eliminating voids and creating a strong, dense and durable base. The U.S. Forest Service first used ROADBOND EN 1 in 1993. The results were impressive.
There were noticeable increases in strength, flexibility and resistance to the elements. Silt runoffs from the road surface to surrounding creeks and waterways have been greatly reduced. The U.S. Forest Service would typically have to replace the surface material every four years. That has been extended for more that thirteen years with virtually no maintenance other than the clearing of lateral drainage ditches. The advantages associated with ROADBOND EN 1 have saved the U.S. Forrest Service an estimated $10,000 per mile. These savings compound every four or five years for the life of the roadway. With over thirty miles stabilized with ROADBOND EN 1 this equates to a savings of around $ 300,000 and additional savings in the out years totaling more than $900,000.
ROADBOND EN 1 has enabled the Forest Service to maintain a viable road system in spite of annual budget cuts and downsizing in the workforce.

ROADBOND EN 1 was installed on the south bound service road in 1991. ROADBOND EN 1 was selected to cope with the challenge of constructing a superior road base with limited resources. The use of ROADBOND EN 1 to stabilize the existing material resulted in a $25,000 to $35,000 savings. ROADBOND EN 1 is a proven product with a history spanning 3 decades The Texas Department of Transportation’s experience with ROADBOND EN 1 goes back to the late 1980’s. There are many different construction methods used when repairing or replacing major roadways. Full depth reclamation is an excellent way to conserve resources and when paired with ROADBOND EN 1, can build a better roadway. ROADBOND EN 1 is a versatile product and can be very useful in saving time and money. It can be used in lieu of lime stabilization and it can improve cement or fly ash treated subgrade. This versatility was particularly useful on a project constructed in 1991.
ROADBOND EN 1 was installed on the south bound service road of east loop 820 in Dallas, Texas. The service road is one half mile long and provides access to the Central Freight and Roadway terminals, which result in heavy semi truck traffic. There are hundreds of trucks per day that travel along the roadway. ROADBOND EN 1 was selected for this project to cope with the challenge of constructing a superior road base with limited resources.

Normally, the old material would be excavated and replaced with four to five inches of hot mix. One and a half inches of asphalt overlay was added as pavement. The total materials cost for this project was less than 40 cents per square yard excluding the surface treatment. This road was constructed over 15 years ago and is still holding up well today. No other product on the market can make that claim. ROADBOND EN 1 is being used with great success in Texas and is available throughout the world.

ROADBOND EN 1 was used to construct a half mile section of road. This replaced hauling out approximately 800 to 1000 cubic yards of old material and bring in 800 to 1000 cubic yards of hot mix. The use of ROADBOND EN 1 to stabilize the existing material resulted in a $25,000 to $35,000 savings and it is still holding up well after two years.”

Ralph Apodaca
Texas Department of Transportation
Fort Worth District

Installation was quick and easy. No transportation trucks and no remix. Finished in one day. Soil worked well and is easily cut and placed on grade.
Shed water well and is hard and tight.

In October of 2005 the city of Dallas used ROADBOND EN 1 in lieu of lime stabilization on several alley reconstruction projects. The Satsuma Drive alley was the initial alley project. The subgrade soil was dark brown clay with a P.I. over 40. The existing alley was excavated to lower the grade which allowed six-inches of stabilized subgrade and 6-inches of reinforced concrete pavement. The lines and grades were established and on Wednesday October 26th the clay soil was stabilized with ROADBOND EN 1 to a depth of 6-inches. It was placed, mixed, compacted and finished all on the same day.
On Monday October 31st, the site received over 2-inches of rain and as the photo shows, completely submerged the alley. That afternoon, the contractor pumped the standing water off the site.
The next morning workers began to set the forms for the pavement. Although the surface was wet, the section was not soft, but remained stable and could support construction traffic. On Wednesday the lab took densities. Before the rain densities ranged from 96% to 101% and after the rain densities ranged from 97% to 103%. Although the section stood water, penetration into the subgrade was minimized because ROADBOND EN 1 significantly reduced the permeability of the clay soil.
On Thursday, the forms and rebar were in-place and Friday morning the concrete was poured. From Monday afternoon standing water to Friday afternoon paved with concrete. ROADBOND EN 1 routinely surpasses the capabilities of conventional stabilizers.