THE EFFECT OF LIME ON REDUCING MOISTURE DAMAGE IN ASPHALT CONCRETE MIXTURES

A significant number of premature asphalt concrete pavement failures occurred in northern California. The distress was manifested in the form of cracking with varying degrees of severity. Rutting, raveling, and potholes occurred also at various locations. Moisture induced damage (stripping) was identified to be the major cause of distress. Treating aggregates with hydrated lime in a slurry form prior to mixing with asphalt was one of the measures taken to reduce moisture sensitivity. In this study, an evaluation of the effectiveness of hydrated lime was performed. Two asphalt concrete mixtures were tested. The two mixtures were classified as good and poor quality in terms of their resistance to stripping. Three different asphalt contents which were representative of variations from the optimum bitumen content were selected. Two hydrated lime contents were used. The lime was mixed in a slurry form.

Corporate Authors:
Minnesota Department of Transportation

395 John Ireland Boulevard
St Paul, MN United States 55155
Authors:
- Shatnawi, S R
- VAN KIRK, J
Conference:
- 4th International Conference, Bearing Capacity of Roads and Airfields
- Location: Minneapolis, MN
- Date: 1994-8-17 to 1994-8-21
Publication Date: 1994

Language

English

Media Info

Features: Figures; References; Tables;
Pagination: p. 1037-1052
Serial:
- Volume: 2

Subject/Index Terms

TRT Terms: Aggregates; Asphalt concrete; Asphalt concrete pavements; Bitumen; Calcium hydroxide; Cracking; Distress; Evaluation; Failure; Impacts; Loss and damage; Measures of effectiveness; Mixtures; Moisture content; Rutting; Slurry; Stripping (Pavements); Tests
Uncontrolled Terms: Damages; Effectiveness; Potholes; Reduction (Decrease)
Subject Areas: Geotechnology; Highways; Materials; I31: Bituminous Binders and Materials; I32: Concrete;

Filing Info

Accession Number: 00730104
Record Type: Publication
Files: TRIS, STATEDOT
Created Date: Dec 17 1997 12:00AM