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Title:

Thickness Measurements on Structural Concrete Members with Compact Dimensions Using Ultrasonic Pulse-Echo and Impact-Echo

Accession Number:

01473716

Record Type:

Component

Availability:

Transportation Research Board Business Office

500 Fifth Street, NW
Washington, DC 20001 United States

Abstract:

Thickness measurements are one of the most common applications for acoustic non-destructive testing (NDT) methods for concrete components. Methods such as ultrasonic pulse echo and impact-echo. They become relevant whenever components are accessible from only one side and, for example, the design thickness needs to be verified or the geometry of a structure needs to be assessed. While such measurements are relatively easy to conduct on test objects with simple geometries and wide dimensions, they become challenging when the geometry of the test object is more complex or when the dimensions of the test object are rather compact. In this study, measurements have been performed on two test blocks with different geometries. Block A is a solid slab-like block of mostly constant thickness. Block B consists of areas of different thickness. All measurements are conducted using an automated test frame, thus providing dense scan grids and therefore good statistical significance. Two- as well as three-dimensional imaging techniques are applied to the data. Within the thickness range investigated here (169 to 510 mm), ultrasonic pulse-echo has proven to be generally robust even on block B with a rather complex geometry. While impact-echo provides satisfying results on the rather simple slab-like block A, it is severely affected by geometrical effects when measurements are being conducted on a test block B.

Supplemental Notes:

This paper was sponsored by TRB committee AFF40 Field Testing and Nondestructive Evaluation (NDE) of Transportation Structures.

Monograph Accession #:

01470560

Report/Paper Numbers:

13-3913

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Algernon, Daniel
Hiltunen, Dennis R
Ferraro, Christopher C
Ishee, Charles

Pagination:

15p

Publication Date:

2013

Conference:

Transportation Research Board 92nd Annual Meeting

Location: Washington DC, United States
Date: 2013-1-13 to 2013-1-17
Sponsors: Transportation Research Board

Media Type:

Digital/other

Features:

Figures; Photos; References; Tables

Candidate Terms:

Impact echo tests

Subject Areas:

Bridges and other structures; Design; Highways; Maintenance and Preservation; I24: Design of Bridges and Retaining Walls; I61: Equipment and Maintenance Methods

Source Data:

Transportation Research Board Annual Meeting 2013 Paper #13-3913

Files:

TRIS, TRB, ATRI

Created Date:

Feb 5 2013 12:46PM