STUDY OF D-CRACKING IN PORTLAND CEMENT CONCRETE PAVEMENTS. VOLUME 2--LABORATORY PHASE
Thirty locations were chosen from the pavements surveyed for the Field Phase Report. Cores were taken and tested for compressive and tensile strength, core density, and freeze-thaw durability. Also, laboratory concretes with variables of aggregate type and size, and water to cement ratio were tested for freeze-thaw durability by ASTM C-666 method A. Laboratory water penetration tests on newer pavement concretes, a dried aggregate field test section, and a condition comparison of adjacent pavement with and without traffic were made. Some observations and conclusions made: D-crack deterioration did not relate to concrete density or strength; air-entrained field concretes were the most freeze-thaw durable; in our tests smaller aggregate size did not relate to better freeze-thaw durability; heat drying the aggregate was not beneficial; pavement cores showed high water penetration; traffic promotes ravelling of D-crack surfaces but is not necessary for its occurrence.
Topeka, KS United States 66612
Washington, DC United States 20590
- Bukovatz, J E
- Crumpton, C F
- Publication Date: 1981-3
- Pagination: n.p.
- TRT Terms: Aggregates; Air entrained concrete; Compressive strength; Concrete pavements; D cracking; Density; Freeze thaw durability; Portland cement concrete; Strength of materials; Tensile strength
- Subject Areas: Geotechnology; Highways; Materials; Pavements; I23: Properties of Road Surfaces; I32: Concrete; I36: Aggregates;
- Accession Number: 00334462
- Record Type: Publication
- Report/Paper Numbers: FHWA-KS-81-2 Intrm Rpt.
- Contract Numbers: Study 65-2A
- Files: TRIS, USDOT, STATEDOT
- Created Date: Nov 23 1981 12:00AM