Shear strengthening of reinforced concrete beams with high

PDF Enhancement of shear strength and ductility for reinforced

Shear strength; Wide beams; Ductility; Web reinforcement Abstract The shear behavior of reinforced concrete wide beams was investigated. The experimen-tal program consisted of nine beams of 29 MPa concrete strength tested with a shear span-depth ratio equal to 3.0. One of the tested beams had no web reinforcement as a control specimen. The

Learn More

PDF Shear-flexural strength mechanical model for the design

A mechanical model recently developed for the shear strength of slender reinforced concrete beams with and without shear reinforcement is presented and extended to elements with uniformly distributed loads, specially focusing on practical design and assessment in this paper. The shear strength is considered to be the sum of the shear

Learn More

PDF CFRP shear strengthening of reinforced concrete T-beams

1 1 CFRP SHEAR STRENGTHENING OF REINFORCED CONCRETE T- 2 BEAMS WITH CORRODED SHEAR LINKS 3 4 Shunde Qin1; Samir Dirar2; Jian Yang3; Andrew H. C. Chan4; and Mohammed Elshafie5 5 6 ABSTRACT 7 This paper investigates the structural behavior of un-corroded as well as corroded reinforced 8 concrete (RC) T-beams strengthened in shear with either externally bonded (EB) carbon

Learn More

Shear Strengthening of Reinforced Concrete T-Beams with

Aug 04,  · Strengthening of existing reinforced concrete (RC) structures by externally bonding carbon fiber–reinforced polymers (CFRP) applied to the concrete substrate has proven to be effective in enhancing the shear capacity of RC beams.

Learn More

Shear - moment analysis of reinforced high strength

A new equation for predicting the shear strength of reinforced high strength concrete beams is developed. This equation shows a good correlation with own test data of 16 reinforced high strength concrete beams with and without steel fibres and numerous published experimental data for beams with concrete compressive strength up to 140 MPa.

Learn More

DESIGN OF REINFORCED CONCRETE BEAMS WITH WEB

Dec 11,  · In a beam, shear is always associated with bending moment, except for the section at inflection point. When a small opening is introduced in a region subjected to predominant shear and the opening is enclosed by reinforcement, as shown by solid lines in Fig. 1, test data reported by Hanson (1969), Somes and Corley (1974), Salam (1977), and Weng (1998) indicate that the beam may fail in

Learn More

STRENGTHENING OF RINFORCED CONCRETE BEAMS - The

Fig.2- Strengthening a beam without increasing cross sectional area. II-INCREASING BOTH THE REINFORCING STEEL BARS AND THE CROSS - SECTIONAL AREA OF CONCRETE This solution is chosen when both the steel and concrete are not able to carry the additional loads applied to the beam.In such cases the following steps should be followed as in Fig 3.1. Removing the concrete cover, roughing the beams

Learn More

Shear strength analysis and prediction of reinforced

Shear strength analysis and prediction of reinforced concrete transfer beams in high-rise buildings41 fineness respectively were 3.14 and 275 m2/kg), locally available Yamuna river sand of specific gravity was 2.60 and fineness modulus was 2.29, Crushed granite metal of maximum size 20 mm

Learn More

Effect of Member Depth on Shear Strength of High-Strength

Dec 01,  · This paper examines the effect of depth on the shear strength and behavior of high-strength concrete beams reinforced with glass-fiber-reinforced polymer (GFRP) and carbon-fiber-reinforced polymer (CFRP) bars in the longitudinal direction only without stirrups.

Learn More

Shear Tests for Ultra-High Performance Fiber Reinforced

May 26,  · For fiber-reinforced concrete beams, when compressive strength (f c ′) is not exceeding 40 MPa, an overall height (h) not > 600 mm, and the factored shear force not larger than ϕ0.17√f c ′ b w d, the minimum shear reinforcement would not be required.Parra-Montesinos suggested that shear strength of FRC with hooked or crimped steel fibers exhibits greater than 0.29√f c ′ b w d.

Learn More

Shear strength of epoxy-modified reinforced concrete beams

Sarsam KF, Al-Musawi JMS (1992) Shear design of high and normal strength concrete beams with web reinforcement. ACI Struct J 89(6):658-664. Google Scholar 10. Ministry of Housing, Utilities and Urban Communities (2007) Egyptian code for design and construction of reinforced concrete structures (ECP 203-2007). Cairo. 11.

Learn More

Shear strengthening of reinforced concrete beams with CFRP

The shear strength of FRP strengthened beams is usually calculated by adding individual components of shear resistance from the concrete, steel stirrups and FRP. The superposition method of design is replaced in Eurocode 2 by the variable angle truss model in which all the shear is assumed to be resisted by the truss mechanism.

Learn More

SHEAR STRENGTHENING OF RC BEAMS WITH HIGH

Keywords: Shear strengthening, High performance fiber, Reinforced concrete. 1 Introduction The interest for strengthening and repair RC structures has increased in the last few years. Several existing structures were built referring to old codes and they do not satisfy the prescription of new codes.

Learn More

PDF Shear strength analysis and prediction of reinforced

Shear strength analysis and prediction of reinforced concrete transfer beams in high-rise buildings41 fineness respectively were 3.14 and 275 m2/kg), locally available Yamuna river sand of specific gravity was 2.60 and fineness modulus was 2.29, Crushed granite metal of maximum size 20 mm

Learn More

Experimental Study on Shear Strength of Steel Fiber

Steel Fiber Reinforced Concrete (SFRC) beams has greater shear strength than typical reinforced concrete beams due to the high tensile strength of steel fibers. In this research, an experiment has been conducted to investigate the shear behavior of SFRC beams, and especially, the portion of shear resistance by uncracked compressive concrete

Learn More

PDF Problems Associated with Plate Bonding Methods of

Plate bonding methods of strengthening r.c. beams Strengtheningusing steel plate:Steel plateis oneofthe most common materials for strengthening of reinforced concrete beam. It is very effective for increasing the flexural and shear capacityof reinforced concrete beam. Strengtheningby steelplateis apopularmethod dueto its

Learn More

Shear strengthening of reinforced concrete beams

Shear strengthening of reinforced concrete beams strengthened using embedded through section steel bars Matteo Breveglieria,⇑, Alessandra Aprilea, Joaquim A.O. Barrosb a Dep. of Eng., University of Ferrara, 44121 Ferrara, Italy bISISE, Dep. of Civil Eng., Univ. of Minho, Azurém, 4810-058 Guimarães, Portugal article info Article history:

Learn More

PDF Shear Strength of Ughtly Reinforced T-Beams

The nominal shear strength of a reinforced concrete beam, vn, is normally expressed as the sum of the in­ dividual contributions of the concrete Vc and the shear reinforcing Vs' (1} For the purposes of comparing analytical predictions with experimental results, it is somewhat more useful to express Eq. (1) in terms of shear stress

Learn More

Shear Strengthening of Reinforced Concrete Beams With Near

SHEAR STRENGTHENING OF REINFORCED CONCRETE BEAMS WITH NEAR-SURFACE MOUNTED FIBER-REINFORCED POLYMER RODS. The use of near-surface-mounted (NSM) fiber-reinforced polymer (FRP) rods is a promising technology for increasing flexural and shear strength of deficient reinforced concrete (RC) members.

Learn More

Shear Strengthening of Reinforced Concrete T-beams Using

Shear Strengthening of Reinforced Concrete T-beams Using Carbon-Reinforced Concrete. By. Civilax - July 27, 2020. 10. Facebook. Twitter. Shear Strengthening of Reinforced Concrete T-beams Using Carbon-Reinforced Concrete: Duration: 14 Mins: Language: English: Format: MP4: Size: 25 MB: Download Method: Direct Download :

Learn More

Shear design of reinforced high-strength concrete beams - CORE

Based on the ANN results, a parametric study was carried out to study the influence of each parameter affecting the failure shear strength.New expressions are proposed, taking into account the observed behaviour for the design of high-strength and normal-strength reinforced concrete beams with and without web reinforcement.

Learn More

Experimental Study on the Shear Performance of Reinforced

To investigate the residual shear capacity of post-fire bolted side-plated (BSP) reinforced concrete (RC) beams with different depths of steel plate and types of anchor adhesive, i.e., magnesium oxychloride cement (MOC) and HIT-RE500, a control beam and five BSP beams were fabricated, of which two were exposed to fire in accordance with ISO834 temperature curve.

Learn More

BEHAVIOUR OF REINFORCED HIGH-STRENGTH CONCRETE

beams made of normal strength concrete [2-9], but a few is known about those made of high-strength concrete [10]. Therefore, the object ive of this research is to estimate experimentally and analytically the influence of we b openings on the structural behaviour of reinforced high-strength concrete beam s subjected to static and repeated

Learn More

Shear Strengthening of Reinforced Concrete Beams with HFRP

This paper presents an experimental study on the strengthening of scaled reinforced concrete (RC) deep beam using hemp fiber reinforced polymer (HFRP) composite. HFRP is the composite material which compose of hemp fiber bonding with epoxy resin. The major benefit of using hemp fiber is that their low price, high toughness, and hemp is natural fiber product which that can be found locally.

Learn More

Shear Strength of Reinforced Concrete Beams Made with

the coarse aggregate replacement ratio. The predicted shear strength by the ACI code was overly conservative compared to the experimental values. Kim et al. [4] considered the size effect of shear strength in 12 reinforced concrete beams made recycled coarse aggregate without stirrups.

Learn More

Shear Strength of Externally U-Bonded Carbon Fiber

urations to shear strengthen the reinforced concrete beams (Siddika et al. [16]). Moreover, FRP can be discrete in the form of strips or continuous in the form of sheets, and the fibers can be oriented vertically or diagonally. The maximum tensile strength of the fibers can be

Learn More

PDF Shear Design of Reinforced Concrete Beams, Slabs and Walls

Fig. 3. Correlation of test shear strength versus shear strength predicted by AS3600: high strength concrete beams *'. c7 T i Example Design suitable vertical stirrups for a reinforced concrete beam given that I/(dead load) = 150 kN, 'C/(live load) = 100 kN, b, = 300 mm,

Learn More

PDF Effect of Shear Span to Depth Ratio on Shear Strength of

on SFRC high strength deep beams while other parameters assumed constant. It predicts that the shear strength of SFRC high strength deep beam at a particular . a/d. increases with increase in fiber volume fraction. The enhancement in shear strength can be observed for volume fraction up to 1.5% at all a/d ratio assumed. But the

Learn More

Shear strengthening of reinforced concrete beams with CFRP

The current paper reviews existing design guidelines for strengthening beams in shear with carbon fibre reinforced polymer (CFRP) sheets and proposes a modification to Concrete Society Technical Report TR55. It goes on to present the results of an experimental programme which evaluated the contribution of CFRP sheets towards the shear strength

Learn More

PDF Shear strengthening of reinforced concrete beams with CFRP

The current paper reviews existing design guidelines for strengthening beams in shear with carbon fibre reinforced polymer (CFRP) sheets and proposes a modification to Concrete Society Technical Report TR55. It goes on to present the results of an experimental programme which evaluated the contribution of CFRP sheets towards the shear strength

Learn More

PDF Detailing and Behavior of Coupling Beams With High

One reinforced concrete coupling beam was included along with three strain-hardening, High-Performance Fiber Reinforced Concrete (HPFRC) coupling beams to allow a comparison of their behavior. When subjected to reversing lateral displacements, the system behaved in a highly ductile manner characterized by excellent strength retention to drifts

Learn More

Inquiry