Loading...
Construction Of Low-Cracking High-Performance Bridge Decks Incorporating New Technology
Lafikes, James Darwin, David O'Reilly, Matthew Feng, Muzai Bahadori, Alireza Khajehdehi, Rouzbeh
Lafikes, James
Darwin, David
O'Reilly, Matthew
Feng, Muzai
Bahadori, Alireza
Khajehdehi, Rouzbeh
Citations
Altmetric:
Abstract
Construction and early-age crack evaluations of four bridge decks in Minnesota placed from 2016
to 2018 that incorporate specifications for Internally-Cured Low-Cracking High-Performance
Concrete (IC-LC-HPC) are documented in this study. Two additional decks that serve as Controls
followed specifications for high-performance concrete and paired with IC-LC-HPC decks are
included. Pre-wetted fine lightweight aggregate was used to provide a targeted internal curing
water content of 8% by total weight of binder. The IC-LC-HPC mixtures included 27 to 30% slag
cement by total binder weight while the Control mixtures included 25 or 35% Class F fly ash by
total weight of binder. For one IC-LC-HPC deck, mixture proportions were modified based on a
higher FLWA absorption than originally used to design the mixture. One IC-LC-HPC placement
failed due to errors in FLWA moisture corrections and concrete batching that led to rejections of
batches, leaving an inadequate supply of material to complete the deck. Crack surveys were
completed for the IC-LC-HPC and Control decks placed in 2016 and 2017. Crack densities at these
ages were low compared to most Low-Cracking High-Performance Concrete decks in Kansas and
Internally-Cured High-Performance Concrete decks in Indiana, with the exception of one IC-LCHPC
deck that exhibited extensive cracking within one year after placement, which had an overlay
with a high cement paste content and no internal curing. This project serves as a foundation for
implementing IC-LC-HPC in upcoming bridge decks in Kansas and Minnesota.
Description
Date
2019-06-01
Journal Title
Journal ISSN
Volume Title
Publisher
University of Kansas Center for Research, Inc.
Research Projects
Organizational Units
Journal Issue
Keywords
bridge decks, concrete construction, cracking, internally-cured low-cracking high-performance concrete, lightweight aggregate, paste content, supplementary cementitious materials
Citation
Lafikes, J., Darwin, D., O’Reilly, M., Feng, M., Bahadori, A., and, Khajehdehi, R., “Construction of Low-Cracking High-Performance Bridge Decks Incorporating New Technology,” SM Report No. 132, University of Kansas Center for Research, Inc., Lawrence, KS, June 2019, 98 pp.