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Title:

Utilization of Maturity Method for Concrete Quality Assurance in Bridge Substructure in Florida

Accession Number:

01033597

Record Type:

Component

Availability:

Transportation Research Board Business Office

500 Fifth Street, NW
Washington, DC 20001 United States

Abstract:

The maturity method is a non-destructive technique used to estimate in-place strength of concrete. The Florida Department of Transportation (FDOT) is currently considering to incorporate suitable specifications for using the maturity method as a quality assurance (QA) tool. The intent is to minimize complete dependence on conventional cylinder-testing procedure. The objective of this paper is to underscore findings of the research project with a focus on investigating the effects on concrete maturity index and strength due to type and location of maturity sensors, and on developing specific guidelines for QA. The experimental data were collected from an under-construction bridge on I-95 in West Palm Beach, Florida. Two types of maturity sensors, sacrificial (in which data logger and sensor are encapsulated) and non-sacrificial (sensor and data logger are separate) were investigated. The maturity sensors were placed near the top, middle and bottom portions of drilled shafts and columns. The maturity method was found to be a reliable strength measuring technique. Results indicated that both sensor types were comparable in accuracy and the selection should depend on their cost and field conditions. Bottom sensors in drilled shafts and top sensors in columns gave lower (or conservative) values of in-place strength than the sensors at other locations. A set of concrete QA guidelines is proposed in the paper for possible implementation by the FDOT. The results of this study are expected to provide useful information to organizations and governmental agencies considering implementation of the maturity method as a non-destructive and cost-effective concrete strength measuring technique.

Monograph Accession #:

01020180

Report/Paper Numbers:

06-2344

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Azhar, Salman

Pagination:

15p

Publication Date:

2006

Conference:

Transportation Research Board 85th Annual Meeting

Location: Washington DC, United States
Date: 2006-1-22 to 2006-1-26
Sponsors: Transportation Research Board

Media Type:

CD-ROM

Features:

Figures (6) ; References (16) ; Tables (1)

Geographic Terms:

West Palm Beach (Florida)

Subject Areas:

Bridges and other structures; Design; Highways; I24: Design of Bridges and Retaining Walls

Source Data:

Transportation Research Board Annual Meeting 2006 Paper #06-2344

Files:

TRIS, TRB

Created Date:

Mar 3 2006 10:58AM