Durability assessment of coarse aggregates for HMA in Maine.
Advanced Search
Select up to three search categories and corresponding keywords using the fields to the right. Refer to the Help section for more detailed instructions.

Search our Collections & Repository

All these words:

For very narrow results

This exact word or phrase:

When looking for a specific result

Any of these words:

Best used for discovery & interchangable words

None of these words:

Recommended to be used in conjunction with other fields

Language:

Dates

Publication Date Range:

to

Document Data

Title:

Document Type:

Library

Collection:

Series:

People

Author:

Help
Clear All

Query Builder

Query box

Help
Clear All

For additional assistance using the Custom Query please check out our Help Page

i

Durability assessment of coarse aggregates for HMA in Maine.

Filetype[PDF-697.88 KB]


  • English
    • Details You May Also Like

    Details:

    • Creators:
      Nener-Plante, Derek
    • Corporate Creators:
      Maine. Dept. of Transportation
    • Subject/TRT Terms:
    • Publication/ Report Number:
      43075
    • Resource Type:
      Tech Report
    • Geographical Coverage:
      Maine
    • Corporate Publisher:
      Maine. Dept. of Transportation
    • Abstract:
      In this study, Micro-Deval and L.A. Abrasion were used to evaluate the durability of 72 individual

      coarse aggregates used for HMA in Maine. Aggregates used in hot-mix asphalt (HMA) must be

      durable and resistant to abrasion and degradation. Material loss in HMA pavements has recently

      been observed by MDOT and aggregate degradation has been hypothesized as a possible contributor.

      The Micro-Deval results showed no correlation with results from the L.A. Abrasion and the range in

      values was quite large. Two alternative methods of analyzing Micro-Deval were employed to

      measure the change in gradation of aggregate samples. A relatively large portion of tested aggregate

      sources were found to degrade significantly in the Micro-Deval test while having acceptable

      AASHTO Micro-Deval loss values, this presumably due to fracturing instead of abrasion. The

      weighted average method and area between curves method proved to be effective in measuring the

      change in particle size distribution not captured with the Method 1 Micro-Deval loss value. In

      addition, a significant influence of initial grading size was found in all of the Micro-Deval data with

      finer initial gradations producing higher loss values. The alternative analysis methods for Micro-Deval are recommended for use in detecting degradation not captured by the traditional Micro-Deval

      value

    • Format:
      PDF
    • Collection(s):
    • Main Document Checksum:
    • Download URL:
    • File Type:

    Supporting Files

    • No Additional Files

    More +

    You May Also Like

    Checkout today's featured content at rosap.ntl.bts.gov

    Version 3.26