Early-Age Fiber-Reinforced Concrete Properties for Overlays

Bordelon, Amanda; Kim, Min Ook

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Early-Age Fiber-Reinforced Concrete Properties for Overlays

2018-07-01
By Bordelon, Amanda ; Kim, Min Ook

File Language:

English

Details

Creators:

Bordelon, Amanda ; Kim, Min Ook
Corporate Creators:

Mountain Plains Consortium
Corporate Contributors:

Utah Valley University ; Korea Institute of Ocean Science
Subject/TRT Terms:
Publication/ Report Number:

MPC 18-353
Resource Type:

Tech Report
Geographical Coverage:

United States ; Utah ; Korea
Corporate Publisher:

Mountain Plains Consortium
Abstract:

This study aims to investigate the age-dependent changes in flexural and fracture properties of fiberreinforced concrete (FRC) used in the design of thin overlay pavements. Four different types of steel or polypropylene macro-fibers with different dimensions and different fiber volume contents (0%, 0.5%, and 1.0%) were selected and investigated. No significant changes in compressive strength, free drying shrinkage, coefficient of thermal expansion, and modulus of rupture versus age were identified. Steel FRCs were observed to have a constant or increased residual strength as a function of age while different types or contents of polypropylene FRCs showed varied trends in residual strength versus age. Fracture energy for all FRCs was observed to increase versus age. The residual strength ratio for all FRCs decreased as a function of age, but with only two replicates per age and FRC type, and values were highly variable so no trends were statistically verified at this time. A standard test age, namely 28 days, is recommended due to the changing residual strength ratio parameter used in thin FRC overlay design.
Format:

PDF
Download URL:

https://rosap.ntl.bts.gov/view/dot/36667/dot_36667_DS1.pdf
File Type:

[PDF - 1.52 MB]
Collection(s):

University Transportation Centers ; US Transportation Collection
Main Document Checksum:

urn:sha256:dcad6ef1b7a64d58db12ab1b557d697c6403bac23462a1af171ea7443c0c8286

File Language:

English

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