Fiber in CRCP Pavements
Author:
Publisher:
Published: 2006
Total Pages: 202
ISBN-13:
DOWNLOAD EBOOKRead and Download eBook Full
Author: Matthew James Mulheron
Publisher:
Published: 2015
Total Pages: 95
ISBN-13:
DOWNLOAD EBOOKConcrete pavement design is currently centered on steel reinforcement. Whether that reinforcement be in the form of dowel bars, as is the case in jointed plain concrete pavement (JPCP), or in the form of continuous rebar reinforcement, continuously reinforced concrete pavement (CRCP). The use of steel in concrete pavements presents durability problems due to the corrodibility of steel. This study evaluates the use of polypropylene fibrillated, polypropylene macro, and carbon fiber fibers as primary reinforcement in concrete pavements for the Louisiana DOT. Results showed that fiber reinforcement can be used to improve both the fatigue and toughness performance of concrete. When post-cracked strength or toughness is the concern, concrete containing more fibers and fibers with higher tensile strength are desirable. Carbon fibers maintained greater load-carrying capacity at lower deflections than the steel fibers, which produced the greatest ductility. However, toughness and fatigue performance did not correlate for small deflections, suggesting that polypropylene macro fibers may be adequate for repeated, low stress loading. This study also found that when repeated low deflections are a concern, such as with pavements, there must be sufficient fibers across a crack to maintain a tight crack. Conversely, too many fibers prevent adequate consolidation and aggregate interlock, which negatively influences performance. When considering the pre-cracked fatigue performance of fiber reinforcement, the fibers needed to have sufficient length to reach across the crack and bond with the concrete, and that higher fiber dosages increase the fatigue performance of the concrete. The resulting pavement design, continuously fiber reinforced concrete pavement (CFRCP), will provide an alternative to JPCP and CRCP in highway pavement design that is not susceptible to durability problems associated with corrosion of the reinforcement.
Author: United States. Federal Highway Administration
Publisher:
Published: 2009
Total Pages: 8
ISBN-13:
DOWNLOAD EBOOKThis TechBrief discusses the potential use of fiber-reinforced polymer (FRP) bars in continuously reinforced concrete pavements (CRCP). Relative advantages and disadvantages of FRP bars are presented, and some specific considerations for the use of FRP bars in CRCP design and construction are described. This is followed by an overview of two recent experimental CRCP projects that have been constructed with FRP bars.
Author: Jeong-Hoon Choi
Publisher:
Published: 2005
Total Pages: 84
ISBN-13:
DOWNLOAD EBOOKAuthor: James E. Shoenberger
Publisher:
Published: 1992
Total Pages: 116
ISBN-13:
DOWNLOAD EBOOKAuthor: William M. King
Publisher:
Published: 1993
Total Pages: 50
ISBN-13:
DOWNLOAD EBOOKAuthor: Yongxin Liu
Publisher:
Published: 1995
Total Pages: 104
ISBN-13:
DOWNLOAD EBOOKAuthor: V. Ramakrishnan
Publisher:
Published: 1997
Total Pages: 82
ISBN-13:
DOWNLOAD EBOOKAuthor:
Publisher:
Published: 2005
Total Pages: 79
ISBN-13:
DOWNLOAD EBOOKThe corrosion resistance characteristics of glass fiber reinforced polymer (GFRP) rebars make them a promising substitute for conventional steel reinforcing bars in continuously reinforced concrete pavements (CRCPs). Studies are conducted on the effect of using GFRP rebars as reinforcement in CRCP on concrete stress development, which is directly related to the concrete crack formation that is inevitable in CRCP.
Author: Manik Barman
Publisher:
Published: 2021
Total Pages: 176
ISBN-13:
DOWNLOAD EBOOKThis study investigates the performance benefits of synthetic structural fibers in mitigating distresses in thin concrete pavements and overlays. In this study, two ultra-thin (3 and 4 inches thick) and four thin (5 and 6 inches thick) concrete pavements placed on a gravel base along with two thin unbonded concrete overlay cells (5 inches thick) placed on an existing concrete pavement were constructed at the Minnesota Road Research (MnROAD) facility in 2017. This report discusses the objectives and methodology of the research, including the construction of the test cells, instrumentation, traffic load application, and data collection and analysis procedures. The structural responses and distresses observed over three years, such as fatigue cracking and faulting, as well as the joint performance measured in each cell, were discussed and compared in this report.