Bending And Shear Behavior Of Ultra-high
Performance Fiber Reinforced Concrete
Author(s)
C. Magureanu, I. Sosa, C. Negrutiu & B. Heghes
Abstract
This paper presents the experimental research regarding the physical-mechanical
properties and the bending and shear behavior of the ultra high performance
concrete. The cementitious composite with 2% volume of steel fibers was tested
for the following characteristics: the compressive and tensile strength, the stressstrain
characteristic curve for compression strength and flexural strength.
Furthermore, a series of reinforced elements were tested and analyzed in terms of
maximum crack width, deformations and maximum compressive strain. The
specimens subject to 90°C thermal treatment for 5 days displayed an increase of
compressive strength up to 180 MPa at the age of 6 days. The experimental data
obtained on specimens with a thermal curing regime are evaluated by
comparison with specimens with a water-curing regime.
Keywords: ultra high performance concrete, compression, tension, splitting,
flexure, shear, bending, fiber.
1 Introduction
Ultra high performance fiber reinforced concrete (UHPFRC) stands for concretes
with compressive strengths exceeding 150 MPa [1]. The concrete composition
includes high cement content, mineral admixture (usually silica fume), steel
fibers and a very low water/binder ratio, ensured by the use of last generation
superplasticizers [1–4]. UHPFRC incorporates very fine sands or quartz sands
with granule size up to 1 mm. Besides the superior physical-mechanical
properties compared with ordinary concrete and even high strength concrete,
UHPFRC presents very good ductility and durability properties [1–6].
Keywords
ultra high performance concrete, compression, tension, splitting,
flexure, shear, bending, fiber
Related Book
Other papers in this volume
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