Lightweight Aggregate Use in Structural Concrete, MLR-69-1 and R-229, 1969

(1969) Lightweight Aggregate Use in Structural Concrete, MLR-69-1 and R-229, 1969. Transportation, Department of

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Abstract

The Iowa State Highway Commission has adopted a number of rigid safety requirements that the Bureau of Public Roads has set forth as standards for road construction. One of these safety requirements is the elimination of two piers on Interstate grade separations, thus leaving two long spans. These longer spans lower the ability of prestressed concrete beams to compete economically with steel beams. In an effort to be more competitive, the prestressing companies have been studying the use of lightweight aggregate in structural concrete.

Item Type: Departmental Report
Keywords: Concrete, Concrete curing, Lightweight aggregates, Prestressed concrete, Road construction
Subjects: Transportation
Transportation > Roads and highways
Transportation > Research
Transportation > Research > Concrete
Transportation > Design and Construction
ID Code: 16126
Deposited By: Iowa DOT Library
Deposited On: 24 Feb 2014 16:40
Last Modified: 03 Oct 2014 11:59
URI: http://publications.iowa.gov/id/eprint/16126