Condition Survey of Prestressed Concrete Bridges

ABOUT THE INTERNATIONAL CONCRETE ABSTRACTS PORTAL

  • The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.

International Concrete Abstracts Portal

  


Title: Condition Survey of Prestressed Concrete Bridges

Author(s): Vladimir Novokshchenov

Publication: Concrete International

Volume: 11

Issue: 9

Appears on pages(s): 60-68

Keywords: bridges (structures); concrete durability; corrosion; cover; deicers; drainage; joints (junctions); post-tensioning; prestressed concrete; prestressing steels; pretensioning; salts; surveys; General

Date: 9/1/1989

Abstract:
Results of a study of prestressed concrete bridge structures exposed to a deicing salt environment are presented. In-service bridges incorporating pre- and post-tensioned systems were sampled and results indicated that the primary cause of deterioration of prestressed members was penetration of runoff water containing deicing salts through concrete cover and through anchorage zones. Improperly designed and maintained joints and drainage systems were the primary pathways for salt ingress. Procedures, parameters, and threshold values for detection of corrosive environments and assessing the condition of prestressing steel in bridge components also are discussed.