Factors That Influence the Variability of Concrete Surface Resistivity of Field Cast Samples

Grisales, Alvaro Mendoza; Ferraro, Christopher C.; Riding, Kyle A.

i

Factors That Influence the Variability of Concrete Surface Resistivity of Field Cast Samples

2024-02-01
By Grisales, Alvaro Mendoza ; Ferraro, Christopher C. ; Riding, Kyle A.

File Language:

English

Details

Creators:

Grisales, Alvaro Mendoza ; Ferraro, Christopher C. ; Riding, Kyle A.
Corporate Creators:

University of Florida (Gainesville). Engineering School of Sustainable Infrastructure and Environment
Corporate Contributors:

Florida. Department of Transportation
Subject/TRT Terms:

Concrete Durability Laboratory Tests Moisture Content Resistivity Method Temperature Control (Structures) Variables
Publication/ Report Number:

BED05
Resource Type:

Tech Report
Geographical Coverage:

United States
Edition:

Final Report: 03/2022 – 02/2024
Corporate Publisher:

Florida. Department of Transportation
Abstract:

Before specifications can be developed for use of electrical resistivity in quality control programs, potential differences between field- and laboratory-made samples must be quantified. The present research was conducted to provide a better understanding of the effect of each of the factors studied in the variability observed between field-fabricated and laboratory-fabricated samples, to establish expected variations and formulate recommendations to reduce these offsets to expand resistivity testing to field-fabricated samples. The resistivity results showed that frequency used was significant for the least number of mixtures and should have only a minor effect. Temperature control was found to be significant for only a few mixtures (7% to 20%) and RCONTM (13% to 27%). Time of demolding was found to be significant for more mixtures with surface resistivity than bulk resistivity. Limewater curing in a communal tank vs. in individual buckets was found significant in 40% of the mixtures in both surface and bulk resistivity at 28 days. Moisture state during testing was found to be a significant variable. Significant differences in resistivity measurements were found between equipment used.
Format:

PDF
Collection(s):

US Transportation Collection
Main Document Checksum:

urn:sha-512:b90ba112bc322607c699fc63aa61a72a67c523fc21c4c026fc926bffbe65f463dab9dc38cd0242e2ecfa1873852211bd6addcdb82891a22c4b78f11da08c1c08
Download URL:

https://rosap.ntl.bts.gov/view/dot/89383/dot_89383_DS1.pdf
File Type:

[PDF - 2.99 MB ]

File Language:

English

ON THIS PAGE

Details Related Documents

ROSA P serves as an archival repository of USDOT-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by USDOT or funded partners. As a repository, ROSA P retains documents in their original published format to ensure public access to scientific information.