CHARACTERIZATION OF COLD MIXED ASPHALT EMULSION TREATED BASES

A detailed laboratory investigation was performed to characterize the performance of cold mixed asphalt emulsion treated bases for different mix components and environmental conditions. One asphalt emulsion (ISHC Designation AE-150), two aggregate types and gradations, two asphalt emulsion contents and three initial added moisture contents were evaluated. Three curing conditions and different test temperatures were used in the asphalt emulsion mixture evaluation. Marshall size specimens were fabricated and evaluated using different tests. These were the indirect tensile test, resilient modulus test, and Hveem test. The effect of water on the mixture performance was investigated using the water sensitivity test. Correlations between the different asphalt emulsion mixture properties were examined. Subjective conclusions were established for the asphalt emulsion mixture performance for the various conditions. The behavior of asphalt emulsion mixtures was highly influenced by test temperature. The effect of temperature was apparent on the tensile and resilient characteristics of the mixture. In addition, aggregate type, aggregate gradation, asphalt emulsion content and initial added moisture content proved to have an effect on the mixture performance. Curing was found to alter the asphalt emulsion mixture strength. Asphalt emulsion mixture performance was somewhat affected by vacuum saturation. This effect was related to the amount of moisture absorbed into the mixture during saturation. The indirect tensile test was easier to perform than the resilient modulus test. Also, the indirect tensile test provided consistant results compared to the resilient modulus test. In addition, the Hveem test was found to be suitable for the evaluation of asphalt emulsion mixtures at room temperature. Reasonable correlations were found between results of the indirect tensile test, resilient modulus test and Hveem test. The results of this study severe several purposes. It provides the highway engineer with a better understanding of the effect of different factors on the tensile and resilient characteristics as well as the different properties of the asphalt emulsion mixtures. (Author)

  • Corporate Authors:

    Purdue University/Indiana Department of Transportation JHRP

    Purdue University, School of Civil Engineering
    West Lafayette, IN  USA  47907-1284
  • Authors:
    • Mamlouk, M S
  • Publication Date: 1979-10-23

Media Info

  • Features: Appendices; Figures; References; Tables;
  • Pagination: 173 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00311335
  • Record Type: Publication
  • Report/Paper Numbers: Proj No. C-36-45M
  • Files: TRIS
  • Created Date: Oct 27 1980 12:00AM