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Title:

Effect of Accelerated Curing on Surface Resistivity and Rapid Chloride Permeability of High Performance Concrete
Cover of Effect of Accelerated Curing on Surface Resistivity and Rapid Chloride Permeability of High Performance Concrete

Accession Number:

01478746

Record Type:

Component

Availability:

Transportation Research Board Business Office

500 Fifth Street, NW
Washington, DC 20001 United States

Abstract:

Recently, many bridges were built using High Performance Concrete (HPC) to increase their durability. However, when subjected to cracking or exposed to aggressive environments, their durability would gradually diminish, causing corrosion of reinforcement in the deck. This phenomenon is one of the major factors causing delamination and structural deficiencies of concrete decks. The corrosion risk is directly related to the chloride ion permeability of the concrete, which can be determined using permeability testing at a minimum of 56 days. Since the permeability testing is time consuming and labor–intensive, many of State Department of Transportations (DOT’s) are exploring the use of more expedient and less variable testing methods. To evaluate the long-term durability aspects of HPC at an earlier acceptance age but with lower cost, accelerated curing and concrete resistivity measurement are proposed as a potential replacement. There is a need to understand the effect of accelerated curing on concrete resistivity and chloride ion permeability as a measure of durability. This paper conducts an experimental program to evaluate the effects of accelerated curing on durability performance of HPC. Both the Surface Resistivity (SR) and the Rapid Chloride Permeability (RCP) tests were performed on concrete cylinders cured under accelerated as well as normal wet curing conditions. Results show that RCP testing can be substituted by SR testing as a measure of the durability of concrete. Moreover, accelerated curing can expedite the time needed to test permeability. Additionally, SR testing combined with accelerated curing correlated well with results from RCP testing.

Supplemental Notes:

This paper was sponsored by TRB committee AFN30 Durability of Concrete.

Monograph Accession #:

01470560

Report/Paper Numbers:

13-4676

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Salvador, Michael
Na, Chaekuk
Nassif, Hani
Corso, Frank

Pagination:

14p

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

Uncontrolled Terms:

Surface resistivity

Subject Areas:

Bridges and other structures; Highways; Materials; I32: Concrete

Source Data:

Transportation Research Board Annual Meeting 2013 Paper #13-4676

Files:

PRP, TRIS, TRB, ATRI

Created Date:

Feb 5 2013 12:54PM