Behavior and Strength of UHPC in Shear

July 30, 2021 1:00 pm

In this quarterly Research Seminar, Paolo Calvi, Ph.D., Principal Investigator; and Danielle Voytko, M.S.C.E. Student, present work under the ABC-UTC research project entitled Development of Non-Proprietary UHPC Mix – Evaluation of the Shear Strength of UHPC [ABC-UTC-2016-C2-UW01] conducted at the University of Washington.


Documents:
Behavior and Strength of UHPC in Shear - pdf of presentation
Q&A Session - pdf

Description: Ultra-High Performance Concrete (UHPC), a cementitious concrete with reinforcing fibers, has exceptionally high compressive, tensile, flexural, and bond strengths, but not much is known about its shear strength. Proprietary UHPC mixes have been developed by private companies for use on large-scale projects, but these mixes are not always an option due to various factors. In an effort to make UHPC more accessible, proprietary mixes using locally sourced materials and varying percentages of fiber content have been developed. An experimental program was conducted at the University of Washington (UW), in collaboration with the University of Oklahoma (OU) and Florida International University (FIU), to study one such mix. Each batch of UHPC was subject to compression, modulus of elasticity, direct tension, and flexural beam tests. Additionally, each batch of UHPC was tested in pure shear using the UW Panel Element Tester. The results of the experimental tests were assessed to determine the effects of material sourcing and fiber content on UHPC. Observations were also made about UHPC in terms of its use in industry.

Presenters:

 

Paolo M. Calvi, Ph.D.
Assistant Professor
Civil & Environmental Engineering Department
University of Washington

 

 

Danielle Voytko, M.S.C.E. Student
(M.S.C.E., June 2021, UW)
Civil & Environmental Engineering Department
University of Washington

Presentation Graphics:

 

Figure 1. Specimen details

Figure 2. Shear panel specimen

Figure 3. Typical shear failure of UHPC specimen

Figure 4. Shear test results of UHPC