Laboratory Evaluation of Roller-Compacted Concrete, MLR-86-6, 1988

(1988) Laboratory Evaluation of Roller-Compacted Concrete, MLR-86-6, 1988. Transportation, Department of

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Abstract

Fine limestone aggregate is abundant in several areas of the state. The aggregate is a by-product from the production of concrete stone. Roller compacted concrete (RCC) is a portland cement concrete mixture that can be produced with small size aggregate. The objective of the research was to evaluate limestone screenings in RCC mixes. Acceptable strength and freeze/thaw durability were obtained with 300 pounds of portland cement and 260 pounds of Class C fly ash. The amount of aggregate passing the number 200 sieve ranged from 4.6 to 11 percent. Field experience in Iowa indicates that the aggregate gradation is more critical to placeability and compactibility than laboratory strength and durability.

Item Type: Departmental Report
Keywords: Aggregate tests, Freeze thaw durability, Limestone aggregates, Roller compacted concrete pavements, Waste products
Subjects: Transportation
Transportation > Materials
Transportation > Materials > Gravel and aggregates
Transportation > Research
Transportation > Research > Concrete
Transportation > Economics, finance, and taxes
ID Code: 17142
Deposited By: Iowa DOT Library
Deposited On: 09 Jun 2014 12:28
Last Modified: 15 Jan 2015 12:41
URI: http://publications.iowa.gov/id/eprint/17142