Investigation of torsional behavior and capacity of reactive powder concrete (RPC) of hollow T-beam

Al.Khuzaie, Hussein M. Ashour; Atea, Rafid Saeed

doi:10.1016/j.jmrt.2017.10.008

Cited by 23 publications

(10 citation statements)

References 2 publications

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“…Al. Khuzaie and Atea (2018) studied a hollow reinforced concrete T-beam under the effect of pure tension experimentally, which are made of reactive powder concrete (RPC). They concluded that the addition of 2% steel fibers to concrete mix increased the cracking and ultimate torque of the RPC hollow Tbeam.…”

Section: Introductionmentioning

confidence: 99%

An Assessment of the Effect of Construction Errors During the Implementation of Rc T-Beams

et al. 2019

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This paper investigates the effects of construction errors during the implementation of reinforced concrete T-beams. These errors are classified into two main sections. The first focuses on the position and ratio of reinforcing bars, while the other is related to the concrete strength. A total of ten specimens of T-beams were tested to assess the effect of the possible defects in the construction sites, viz. impact of misplacement of slab reinforcement, irregular arrangement of slab reinforcement, the change in bar diameter of slab reinforcement and the effect of casting method of concrete on the structural behavior of T-beam sections. The results indicated that the faulty placement of slab reinforcement leads to a lower bending moment capacity of the slab (brittle behavior) and the steel strain of slab decreases as the height of slab reinforcement decreases. The irregularity of the reinforcing bars in concrete slab affects the ultimate load carrying capacity of the slab. Also, it was found out that well-arranged distribution of reinforcement improves the ductile behavior of the slab and reduces the corresponding deflections.

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Section: Introductionmentioning

confidence: 99%

An Assessment of the Effect of Construction Errors During the Implementation of Rc T-Beams

et al. 2019

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“…Al-Khuzaie and Atea [31] investigated the effect of adding steel fibres and silica fume in the concrete on the structural behaviour of hollow RC T-beams subjected to pure torsion and found that the addition of these contents to the concrete could enhance the cracking and ultimate torques for the investigated beams.…”

Section: Experimental Studiesmentioning

confidence: 99%

“…Many studies have considered various configurations of web openings in RC beams [12][13][14][15][16][17][18][19][20][21][22][23][24][25]. However, other studies have investigated structural behaviours of RC beams with longitudinal openings [8][9][10][11][26][27][28][29][30][31][32][33][34][35][36][37][38][39], and these studies are related to the current study and can be divided into two big groups, i.e., experimental and numerical studies in a chronological order.…”

Section: Introductionmentioning

confidence: 99%

Structural Efficiency of Hollow Reinforced Concrete Beams Subjected to Partial Uniformly Distributed Loading

et al. 2021

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Reinforced concrete (RC) beams containing a longitudinal cavity have become an innovative development and advantage for economic purposes of light-weight members without largely affecting their resistance against the applied loads. This type of openings can also be used for maintenance purposes and usage space of communication lines, pipelines, etc. RC beams are primarily loaded in the plane of the members, which are two-dimensional in a plane stress state and the dominant structural behaviours include bending, shear, or combination of both. In the present study, six numerical models of RC beams with and without openings were simulated by using commercial finite element software ANSYS to evaluate the structural behaviours of those beam models under the partial uniformly distributed load. Different parameters were assessed, including opening dimensions and shear reinforcement ratios. The obtained numerical results were analysed and verified and were found very close to those obtained from the experimental investigations in the literature. The increase of shear reinforcement ratio could enhance the flexural and shear capacities of the RC beams, and the results also showed that some models sustained flexural failure while the others sustained failure of combined bending and shear.

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“…A gain of 41–125% in flexural strength was reported in CFRP retrofitted beams. Khuzaie and Atea [ 27 ] studied the behavior of hollow RC T-beams constructed with reactive powder concrete (RPC). RPC was made by adding steel fibers and silica fume to concrete in different quantities.…”

Section: Introductionmentioning

confidence: 99%

“…There are limited studies on RC beams with hollow sections [ 26 , 27 ]. There is an urgent need to investigate the effect of openings on the structural behavior of large-scale hollow section RC beams.…”

Section: Introductionmentioning

confidence: 99%

Structural Behavior of Large-Scale Hollow Section RC Beams and Strength Enhancement Using Carbon Fiber Reinforced Polymer (CFRP) Composites

et al. 2021

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An experimental program was conducted to ascertain the efficiency of Carbon Fiber Reinforced Polymer (CFRP) in enhancing the flexural response of hollow section reinforced concrete (RC) beams. Nine beams were tested under four-point bending in three groups. Beams were categorized to reflect the presence or configuration of the CFRP sheet. Each group consisted of three beams: one with a solid section, one with a square 50×50 mm × mm opening and 1 with 100×100 mm × mm opening. Beams in 1st group were tested in as-built conditions. Beams in the 2nd group were strengthened with a single CFRP sheet bonded to their bottom sides. Configuration of CFRP sheet was altered to U-shape applied to the tension side of 3rd group beams. The inclusion of openings, regardless of their size, did not result in degradation of ultimate load and corresponding deflections. However, cracking loads were found to decline as the opening size increased. Regardless of the opening size and CFRP configuration, ultimate loads of beams increased with the application of CFRP. However, this improvement was limited to the debonding and rupture of CFRP in group 2 and 3 beams, respectively. A comparison in the behavior of group 2 and 3 beams revealed that the application of the U-shape CFRP sheet yielded better flexural performance in comparison with the flat-CFRP sheet bonded to the bottom of beams. In the end, In order to further evaluate the economic and performance benefits of these beams, the cost-benefit analysis was also performed. The analysis showed that the feasibility of the hollow section RC beams is more than the solid section RC beams.

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Investigation of torsional behavior and capacity of reactive powder concrete (RPC) of hollow T-beam

Cited by 23 publications

References 2 publications

An Assessment of the Effect of Construction Errors During the Implementation of Rc T-Beams

An Assessment of the Effect of Construction Errors During the Implementation of Rc T-Beams

Structural Efficiency of Hollow Reinforced Concrete Beams Subjected to Partial Uniformly Distributed Loading

Structural Behavior of Large-Scale Hollow Section RC Beams and Strength Enhancement Using Carbon Fiber Reinforced Polymer (CFRP) Composites

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