FIELD EVALUATION OF AN ASPHALT STABILIZED SAND PAVEMENT DESIGNED USING THE ELASTIC LAYERED SYSTEM

The preparation, design and construction are detailed, and the testing, design and performance evaluation are described of a research test road developed to determine thickness and mixture design procedures for stabilizing native sands with bituminous products. The test road includes two asphalt materials (an asphalt and liquid asphalt) and three thicknesses (90, 130, and 200 mm) of stabilized material based on predicted design lives. The data aquisition system measured three variables-strain (long term static and dynamic strains in the subgrade, subbase and stabilized sand pavement), temperature and traffic. The basic components of the measuring system were wire and induction coil strain sensors which utilize the principle of an electromagnetic couple between sensor pairs. The general sequence of installation of the data acquisition system included installation of the extensometers, the sensors in the extensometers, the sensors located under the pavement and temperature sensors in the pavement, and the sensors at the surface of the pavement. The dynamic test results recorded on magnetic tape as analog data was converted to the digital form. A fully automated data processing procedure was developed using a computer program to interpret all the data and to produce all the digitized outputs such as maximum strains and loading rate. The evaluation of the data is detailed. The results presented here cover only one year of a study planned of 10 years. This preliminary report will be followed by periodic reports including an interim report after 5 years of field evaluation.

  • Corporate Authors:

    University of Minnesota, Minneapolis

    155 Experimental Engineering Building
    Minneapolis, MN  United States  55455
  • Authors:
    • Stuart III, E
    • MIYAOKA, Y
    • Skok Jr, E L
    • Wenck, N C
  • Conference:
  • Publication Date: 1974

Media Info

  • Features: Figures; Photos; References; Tables;
  • Pagination: p. 77-109
  • Serial:
    • Volume: 43

Subject/Index Terms

Filing Info

  • Accession Number: 00125398
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Oct 18 1975 12:00AM