Masters Theses

Keywords and Phrases

Bridge Deck; Partially-depth Concrete Deck; Stay-in-place Formwork; UHPC Flexural Behavior; UHPC Shear Behavior; Ultra High Performance Concrete

Abstract

"The remarkable features of ultra-high performance concrete (UHPC) have been reported. Its application in bridge construction has been an active research area in recent years, attributed to its higher compressive strength, higher ductility and reduced permeability when compared with conventional concrete and even high-strength concrete. Those characteristics are known to increase bridge durability and, consequently, decrease life-cycle maintenance costs.

With that in mind, this study investigated the performance of UHPC stay-in-place (SIP) bridge deck panels subjected to high loads in both flexure and shear. The test matrix consisted of twelve (12) half-scale panels that were 4 feet long and 2 feet wide. The variable parameters that were studied included thickness (i.e., 2-in. and 3-in.) as well as non-discrete reinforcement type, including conventional mild reinforcement, welded wire mesh and no reinforcement (UHPC only). Control deck panels with conventional concrete (CC) were fabricated and tested to serve as a baseline for comparison. The results indicated that the UHPC panels had an improved performance compared to the conventional concrete panels. With respect to the panels tested in high shear loads, only the CC panel test resulted in a diagonal tension failure mode (i.e. traditional shear type failure). All of the other UHPC panels failed in flexure suggesting that the UHPC provided a high shear capacity. The results also showed a good correlation with selected empirical models.

A cost study was also investigated. It was concluded that, even with the high difference between the prices per cubic yard of both concretes, the difference can be significantly lower when compared with the prices per ultimate load capacity."--Abstract, page iii.

Advisor(s)

Myers, John

Committee Member(s)

Sneed, Lesley
Khayat, Kamal

Department(s)

Civil, Architectural and Environmental Engineering

Degree Name

M.S. in Civil Engineering

Publisher

Missouri University of Science and Technology

Publication Date

Spring 2016

Pagination

xiii, 101 pages

Note about bibliography

Includes bibliographical references (pages 97-100).

Rights

© 2016 Valter Gora Venancio, All rights reserved.

Document Type

Thesis - Open Access

File Type

text

Language

English

Subject Headings

Bridges -- Materials -- Technological innovationsHigh strength concreteBridges -- Design and construction

Thesis Number

T 10874

Electronic OCLC #

952594004

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