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Home > Publications > International Concrete Abstracts Portal
Showing 1-2 of 2 Abstracts search results
Document:
20-522
Date:
January 1, 2022
Author(s):
Rafic G. El-Helou, Zachary B. Haber, and Benjamin A. Graybeal
Publication:
Materials Journal
Volume:
119
Issue:
1
Abstract:
The appropriate and efficient design of structural components made with ultra-high-performance concrete (UHPC) requires the establishment of key design properties and material models that engage UHPC’s distinct mechanical properties, as compared to conventional concrete. This paper presents the results of an extensive program of compression and tension property assessment executed according to existing testing methods to assess the mechanical characteristics of several commercially available UHPC products. The experimental results are then used to propose suitable mechanical models and design parameters that are foundational for the structural-level application of UHPC. The models rely on a set of experimentally identified mechanical performance properties that distinguish UHPC from conventional concrete and establish the basis of the material qualification for use in structural design. As such, this work constitutes a fundamental step in ongoing efforts to develop UHPC structural design guidance in the United States.
DOI:
10.14359/51734194
92-S07
January 1, 1995
L. J. Rasmussen and G. Baker
Structural Journal
92
This work examines the behavior of reinforced normal concrete (NSC) and high-strength concrete (HSC) beams subjected to pure torsion. The test series consisted of 12 totally over-reinforced beams, with parameters that influence torsional capacity and concrete strength as the only variable. Therefore, the cross-sectional dimensions, and strength and dimensions of the reinforcement, were constant for all beams. The concrete strength varied between 36 and 110 MPa (5220 and 15,959 psi). The test series has shown the advantage in using HSC. In addition to a higher cracking load and higher ultimate torsional capacity, use of HSC for a given cross section and given torque results in higher torsional stiffness, lower crack width, and lower reinforcement stresses compared to NSC.
10.14359/1476
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