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Title:

Measurement and Prediction of Coefficient of Thermal Expansion for Concrete Pavement Design in Georgia
Cover of Measurement and Prediction of Coefficient of Thermal Expansion for Concrete Pavement Design in Georgia

Accession Number:

01476252

Record Type:

Component

Availability:

Transportation Research Board Business Office

500 Fifth Street, NW
Washington, DC 20001 United States

Abstract:

The study to investigate the relationship between Coefficient of Thermal Expansion (CTE), aggregate type, gradations, and proportion of coarse and fine aggregate in mixture was conducted using the American Association of State Highways and Transportation Officials (AASHTO) T 336-11. Concrete specimens were fabricated in the laboratory to produce different mixes using Type I cement. Mix design variables were coarse and sand aggregate types, 2) fly ash type and content (Class C/Class F, High/Low), 3) air-entraining admixture (3%/6%), and 4) coarse aggregate contents (High Stone Volume/Low Stone Volume). For each combination of factors, five specimens from each batch were prepared for the CTE measurements and thus, total number of specimens tested in this study was 320. To properly account for the effect of aggregate content changes on the CTEs, the slump was held to approximately 2-inch on all the concrete mixture designs by adjusting the amount of water used in the mixes. The results showed that concretes composed of high stone volume of granite with manufactured sand have the lowest CTE while those composed of low stone volume of dolomite with siliceous natural sand have the highest CTE value. It implies that the stone volume, aggregate type, and sand type significantly affect the CTE value. In this study, a multiple regression model was also developed to estimate the CTE as a function of coarse aggregate and sand types and contents. The prediction model was validated with field cored specimens, and overall R-square value of the prediction model was over 86%.

Supplemental Notes:

This paper was sponsored by TRB committee AFN20 Properties of Concrete.

Monograph Accession #:

01470560

Report/Paper Numbers:

13-2727

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Kim, Sung-Hee
Jeong, Jin-Hoon

Pagination:

29p

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; References; Tables

Geographic Terms:

Georgia

Subject Areas:

Design; Highways; Pavements; I22: Design of Pavements, Railways and Guideways

Source Data:

Transportation Research Board Annual Meeting 2013 Paper #13-2727

Files:

PRP, TRIS, TRB, ATRI

Created Date:

Feb 5 2013 12:34PM