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"Mechanistic Behavior of UHPC and UHPC Composite

Jan 10, 2017 · Behavior of ultra-high performance concrete (UHPC) composite flexural members are studied using experimental, analytical, and numerical approaches in this research. A new bond-slip model is proposed that contains an explicit representation of the A Review on Structural Behavior, Design, and Application Keywords:ultra-high-performance ber-reinforced concrete, bond performance, structural behavior, design code, application. 1. Introduction Ultra-high-performance ber-reinforced concrete (UHPFRC), which was developed in the mid-1990s, has attracted much attention from researchers and engineers for

Assessment of Bond Behavior of UHPC and Prestressing

Abstract:Ultra High Performance Concrete - UHPC is a relatively new type of composite material with outstanding features (high compressive strength, high tensile strength and high durability). Also the bond strength between steel reinforcement and UHPC is better than that in ordinary concrete. This fact needs to be quantified, because no standard prescribes the bond behavior of UHPC and design of Bond Behavior between Concrete and Self-Expansion Mar 24, 2021 · Existing studies found that the bond performance between concrete and polymer adhesive material such as epoxy is influenced by many factors [1012].Ivano and Andrea [] observed that the bond quality between epoxy and concrete is greatly improved with larger interfacial roughness, and sandblasting is an effective way to increase the surface roughness of concrete. Bond between carbon fibre-reinforced polymer (CFRP) bars Bond between carbon fibre-reinforced polymer (CFRP) bars and ultra high performance fibre reinforced concrete (UHPFRC):Experimental study @article{Ahmad2011BondBC, title={Bond between carbon fibre-reinforced polymer (CFRP) bars and ultra high performance fibre reinforced concrete (UHPFRC):Experimental study}, author={F. Ahmad and G.

Evaluation of Bond of Reinforcing Steel in UHPC:Design

The bond between concrete and reinforcing steel is an important topic in structural concrete as the performance of the structural concrete relies on the composite behavior between reinforcing steel and concrete. In general, factors that affect the bond strength include the tensile Experimental Study on Bond Performance of Carbon- Mar 07, 2021 · bond performance between FRP bars and concrete under various extreme conditions, such as aggressive water/alkali environments, seawater conditions, elevated temperatures, etc. [2228]. Meanwhile, steel strand has also attracted the attention of civil engineering researchers due to its ultra-high Flexural response of double-wythe insulated ultra-high relative end slip between wythes, though the panels initially behave as almost fully composite. The initial fully composite behavior is due to initial bond and friction between insulation and concrete, construction details, and the ties that hold the Ultra-high-performance concrete A commercially avail-

ICME 82 Finite Element Simulation of Steel Plate Ultra

shear generated at the interface between the steel plate and the concrete leads to the bond-slip between them. The bond-slip behavior has a significant influence on the behavior of S-UHPC members, such as stiffness, deflection, strength and failure mode, etc. [12], [13]. Pronounced bond-slip between the bottom steel plate and the concrete was Influence of Fiber Volume Fraction and Fiber Orientation This research focuses on the uniaxial tensile behavior of rebar-reinforced ultra-high performance concrete (reinforced UHPC). In an un-cracked state, reinforced UHPC under tensile loading can be assumed to behave elastically with perfect bond (Figure1a). This is similar to conventional reinforced concrete (RC) under uniaxial tension. Investigation of Suitable Shear Friction Interface between formed by overlaying a thin ultra-high performance concrete (UHPC) layer over a normal-strength concrete (NC) slab. However, a dependable shear friction for the UHPC and NC interface and the factors influencing the connections behavior needs to be investigated to make this concept a

Local bond slip behavior of steel reinforcing bars

The local bond stress slip behavior is a fundamental property required for the analysis and design of concrete structures at both serviceability and at ultimate limit. The addition of fibers has been shown to significantly improve the bond between normal strength concrete and steel reinforcement but little work has investigated the bond between reinforcing and ultra high performance fibre reinforced concrete Nonlinear finite element analysis of ultra-high Oct 18, 2015 · Kang, ST, Kim, JK (2011) The relation between fiber orientation and tensile behavior in an ultra high performance fiber reinforced cementitious composites (UHPFRCC). Cement and Concrete Research 41(10):1001 1014 . UHPFRC as Repair Material for Fire-Damaged Reinforced Ultra High Performance Fiber Reinforced Concrete (UHPFRC) mostly developed using fine size aggregate, cement, silica fume, super plasticizer and reinforced with steel fibre has an excellent mechanical properties compared to high strength concrete and with an addition of steel fibre in the UHPFRC enhances its ductility behaviour which is not possessed by normal concrete, hence,

Bond behavior of epoxy-coated rebar in ultra-high

Bond is the interaction and force transfer between rebar and concrete, which directly affects the performance of concrete structures. On the other hand, innovations in the production of ultra-high