Evaluation of Experimental Data Obtained from Lightweight Aggregate Bridge Girders, HR-104, 1968

(1968) Evaluation of Experimental Data Obtained from Lightweight Aggregate Bridge Girders, HR-104, 1968. Transportation, Department of

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Abstract

The use of lightweight aggregates in prestressed concrete is becoming more of a reality as our design criteria become more demanding. Bridge girders of greater lengths have been restricted from travel on many of our highways because the weight of the combined girders and transporting vehicle is excessive making hauls of any distance prohibitive. This, along with new safety recommendations, prompted the State of Iowa to investigate the use of lightweight aggregate bridge girders. A series of three projects was started to investigate the possibility of using lightweight aggregate in prestressed concrete. The object of this project is to study the effect which lightweight aggregate concrete has on the camber of bridge girders when used in a field situation.

Item Type: Departmental Report
Keywords: Aggregate tests, Bridges, Girders, Highway transportation, Lightweight aggregates, Prestressed concrete, Transportation safety
Subjects: Transportation
Transportation > Materials > Gravel and aggregates
Transportation > Research
Transportation > Research > Concrete
Transportation > Law and policies
ID Code: 16993
Deposited By: Iowa DOT Library
Deposited On: 02 Jun 2014 11:55
Last Modified: 18 Sep 2014 15:32
URI: http://publications.iowa.gov/id/eprint/16993