Location

Brunswick, ME

Start Date

1-1-1997 12:00 AM

Description

In civil engineering structures involving prestressed concrete, the use of posttensioned systems is very common. Post-tensioning is achieved by passing steel cables into ducts previously cast into the concrete. When the concrete has set, the cables are tensioned with hydraulic jacks and then sealed into the duct by pumping in a slurry of cement and water, called grout. The grouting mixture, being alkaline in composition, protects the steel cable from corrosion.

Book Title

Review of Progress in Quantitative Nondestructive Evaluation

Volume

16B

Chapter

Chapter 6: Material Properties

Section

Construction Materials (Concrete, Timber)

Pages

1747-1754

DOI

10.1007/978-1-4615-5947-4_228

Language

en

File Format

application/pdf

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Jan 1st, 12:00 AM

An Intelligent Electrical Time Domain Reflectometry System for the Detection and Characterisation of Fault Conditions in Posttensioning Ducts of Smart Concrete Structures

Brunswick, ME

In civil engineering structures involving prestressed concrete, the use of posttensioned systems is very common. Post-tensioning is achieved by passing steel cables into ducts previously cast into the concrete. When the concrete has set, the cables are tensioned with hydraulic jacks and then sealed into the duct by pumping in a slurry of cement and water, called grout. The grouting mixture, being alkaline in composition, protects the steel cable from corrosion.