Utilizing lignosulfonates for gravel shoulder stabilization.

Details

• Creators:
  Marquis, Brian
• Corporate Creators:
  Maine. Dept. of Transportation
• Subject/TRT Terms:
  • Highway maintenance
  • Cost effectiveness
  • Gravel
  • Road shoulders
  • Binders
  • Compaction
  • Erosion control
  • Service life
  • Lignosulfonate
  • Soil stabilization
• Publication/ Report Number:
  42863
• Resource Type:
  Tech Report
• Geographical Coverage:
  Maine
• Corporate Publisher:
  Maine. Dept. of Transportation
• Abstract:
  A maintenance issue that has the potential for cost savings is the maintenance of gravel shoulders. Maine ; has 5600 miles of roadway with gravel shoulders that erode with heavy rains. Every year the gravel ; shoulders erode to a point were the gravel shoulder elevation is as much as 2 inches below pavement elevation and isolated areas can be washed away to a depth greater than that. This elevation change can make it very difficult to control a vehicle that has wandered into the gravel shoulder. In addition, when a gravel shoulder is even with the pavement it gives support to the pavement edge. When the gravel is ; below the pavement surface that support is diminished and trucks or vehicles that ride along the pavement ; edge can ravel and crack the pavement. This occurs mainly on inside curves and over time, the cracking ; can migrate into the wheel path decreasing the load carrying capacity of the roadway. Based on the ; Departments Maintenance Activity Tracking System, which is a work accomplishment database that ; records labor, equipment, and material costs for all maintenance activities, the Department spends as ; much as 1.14 million dollars per year to re-grade and compact gravel shoulders. ; One way to decrease the cost of maintaining the shoulders and improve safety is to add a binding agent to the gravel prior to re-grading and compaction. This could prevent rain water from eroding the gravel and add stability to the shoulder which could reduce pavement edge ravel and cracking and increase the life ; expectancy of the roadway.
  More +
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/27277/dot_27277_DS1.pdf
• File Type:
  [PDF - 1.95 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:59857200fe5132c9300195f123db6c069c3d54b37dc1b2b910e5fa027a6990f4