United States Department of Transportation
i
Use of Self-Consolidating Concrete for Bridge Drilled Shaft Construction
-
2012-12-01
[PDF-3.79 MB]
Details:
-
Creators:
-
Corporate Creators:
-
Corporate Contributors:
-
Subject/TRT Terms:
-
Publication/ Report Number:
-
Resource Type:
-
Geographical Coverage:
-
Edition:Final
-
Corporate Publisher:
-
Abstract:This report is based on research performed at the University of Hawaii on the use of Self-Consolidating Concrete for construction of drilled shafts for the North Kahana Bridge Replacement project on Oahu, Hawaii. Drilled shaft construction has long been susceptible to poor concrete consolidation due to inaccessibility and heavy reinforcement cages preventing movement of concrete from interior to exterior of the drilled shaft. Because the shaft concrete is never exposed for visual inspection, these defects sometimes go undetected. Cross-hole sonic logging of drilled shafts is often used to ensure that the interior concrete is sound, but cannot be used to inspect the cover concrete outside the reinforcement cage. Self-consolidating concrete (SCC) has gained popularity for use in drilled shafts because of its ability to pass through congested reinforcement and fully fill the drilled shaft without the need for mechanical consolidation. In an attempt to utilize SCC for drilled shaft construction in Hawaii, the Hawaii Department of Transportation (HDOT) applied for and received funding from the Federal Highway Administration (FHWA) to experiment with SCC during construction of the drilled shafts on the North Kahana Bridge Replacement project on Oahu. The Civil and Environmental Engineering Department (CEE) of the University of Hawaii at Manoa (UHM) was commissioned to perform this study. This report represents the final report on this project. The research project was performed in a number of stages, each resulting in a research report documenting that phase of the work. The abstracts and major conclusions from these reports are included here, along with references to the full research reports available online. In addition, interim reports to HDOT are included that show the progression of decision-making during the project.
-
Format:
-
Funding:
-
Collection(s):
-
Main Document Checksum:
-
Download URL:
-
File Type:
