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Service and Ultimate Load Behavior of Precast-Prestressed Concrete Structures Using Recycled Concrete Aggregates

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posted on 2017-07-04, 00:00 authored by Michael R. Brandes

This thesis focuses on the use of recycled concrete aggregates (RCA) in precast-prestressed concrete applications. With the high environmental demands of concrete production, increased sustainability in all components of construction is a necessity. Recent research has shown that RCA can be a viable alternative to natural coarse aggregates (e.g., crushed limestone) in structural reinforced concrete. However, a major limiting factor is the inherent variability in RCA properties, which must be quantified and incorporated to pre-qualify the material. The effects of this variability can be better controlled in precast concrete applications. RCA made from rejected/discarded precast concrete can especially result in high-quality materials, also reducing transportation costs. Since most precast concrete applications use prestressing, this research specifically investigates the effects of RCA on: (1) rate of concrete strength and stiffness gain; (2) strand bond strength; (3) prestress losses; and (4) service load and ultimate load behavior of precast-prestressed concrete beams.

History

Date Created

2017-07-04

Date Modified

2018-10-04

Research Director(s)

Yahya Kurama

Committee Members

Alex Taflanidis Michael McGinnis

Degree

  • Master of Science in Civil Engineering

Degree Level

  • Master's Thesis

Program Name

  • Civil and Environmental Engineering and Earth Sciences

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