نتایج جستجو برای: compacting fiber reinforced concrete

تعداد نتایج: 225767  

Enhancement of strength and ductility is the main reason for the extensive use of FRP (fiber reinforced polymer) jackets to provide external confinement to reinforced concrete columns especially in seismic areas. Therefore, numerous researches have been carried out in order to provide a better description of the behavior of FRP confined concrete for practical design purposes. This study present...

2008
Amjad J. Aref Wael I. Alnahhal

Fiber Reinforced Polymer (FRP) bridge systems are gaining wide acceptance among bridge engineers. At the same time, FRP bridge systems are relatively expensive when compared to traditional reinforced concrete bridge systems. In this study, the concept of the hybrid FRP-concrete structural systems is applied to a bridge superstructure. The hybrid FRP-concrete superstructure system is intended to...

2016
Mingzhang Luo Weijie Li Chuang Hei Gangbing Song

Concrete-filled fiber-reinforced polymer tubes (CFFTs) have attracted interest for their structural applications in corrosive environments. However, a weak interfacial strength between the fiber-reinforced polymer (FRP) tube and the concrete infill may develop due to concrete shrinkage and inadequate concrete compaction during concrete casting, which will destroy the confinement effect and ther...

Journal: :Fibers 2021

The use of fiber in cement materials is a promising and effective replacement for bar reinforcement. A wide range fiber-reinforced concretes based on composite binders with increased impact strength characteristics have been developed. synthesized composites included the binder made Portland cement, silica, carbonate additives. Basalt steel were used as fibers. nature influence composition manu...

Journal: :journal of rehabilitation in civil engineering 2013
a. hemmati a. kheyroddin m.k. sharbatdar

high performance fiber reinforced cementitious composite (hpfrcc) materials exhibit strain hardening behavior with multiple cracking under tensile loading. in this paper, experimental and parametric studies are performed to assess the influence of using hpfrcc material instead of normal concrete in reinforced concrete beams. after calibrating the experimental results, the analytical results inc...

Journal: :Civil Engineering Journal 2021

The goal of this study is to assess the fresh and hardened properties self-compacting concrete (SCC) prepared using locally available materials. This research includes also impact polypropylene (PP), steel hybrid fibers on same properties. In addition, mechanical SCC specimens (with without fibers) at high temperatures, including as compressive, tensile, flexural strengths, will be determined. ...

2010
Daniel C. Jansen

Fiber-reinforced polymer (FRP) reinforcing bars have aTtracted considerable 0llellli0l1 for applications where corrosion of steel reinforcement is problemaric. Due 10 rhe generally low elastic modulus and poor bond clwracreristics of FRP as coil/pared 10 steel reinforcing bars, the use of FRP results in IGI:i?er crack widlhs under senJice loads. Fiber-reinforced concrete (FRe) is proposed for u...

Ali Delnavaz, Moslem Mohammadi Jatani

Given the development of construction industry and design and implementation of high rise buildings with complex sections and various geometrical forms, the use of self-compacting concretes has received the attention of construction engineers and provided great advantages. Due to the increasing air pollution in cities, governments encounter the important issue of repelling the pollutants in whi...

2002
Khaled A. Soudki Ted Sherwood

Corrosion of steel reinforcement is one of the main durability problems facing reinforced concrete infrastructures worldwide. This paper will summarize the results of a multi-phase experimental program undertaken at the University of Waterloo to investigate the viability of using externally bonded fiber reinforced polymer (FRP) laminates to rehabilitate corrosion-damaged reinforced concrete bea...

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