Behaviour of Reinforced Concrete Columns Strengthened with Ferrocement under Compression Conditions: Experimental Approach

Al-Sibahy, Adnan

doi:10.4236/wjet.2016.44057

Cited by 7 publications

(7 citation statements)

References 9 publications

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“…Two groups of the hybrid fibres were used in the ECC ; the first incorporated 0.5% steel and 0.5% polypropylene fibres, and the second incorporated 1% steel and 0.5% polypropylene fibres. The former fibre percentages were recommended by previous studies [1,5].…”

Section: Selection Of the Concrete MIXmentioning

confidence: 99%

“…1 Table 3. The calculated and measured results of load carrying capacity for the eccentric loaded columns (1) Where is the approximate value of ultimate load in biaxial bending with eccentricities and ; 0 is the ultimate load when only eccentricity is present;…”

Section: Table 2 the Values Of Compressive Strengths For Different Cmentioning

confidence: 99%

“…In general, such developing can be obtained either through improving the composition of these members or by updating the implementation techniques used. Reinforced columns are part of these structural members which generally referred to as compression members [1]. In some cases, columns may carry bending moments about one or both axes of the cross section.…”

Section: Introductionmentioning

confidence: 99%

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Structural Behavior of Novel ECC Short Columns Subjected to Eccentric Loading

Mashshay

Al-Sibahya

2020

QJES

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This study was undertaken in order to investigate the structural behaviour of novel Engineering Cementitious Composites (ECC) columns subjected to eccentric loading. These columns were experimentally formulated using a hybridization of steel and polypropylene fibres. Two ratios were adopted for the steel fibres of 0.5% and 1%, whilst the polypropylene fibre was kept to be constant at a ratio of 0.5% for all of the ECC columns. The eccentric loads were applied at two eccentricities: small (h/6) and large (5h/12). A comparison was also made with the behaviour of self-compacting concrete and traditional ECC columns containing either steel or polypropylene fibres. The vertical and lateral deformations as well as the maximum load at failure were noted. The results obtained showed that the hybrid ECC columns exhibited higher load carrying capacities when compared with those of both self-compacting concrete and traditional ECC columns. The percentage increase was 30%. The hybrid ECC column samples containing 1% steel fibre did not show a signification difference in the load-deformation behaviour when it compared with that containing 0.5% steel fibre. The values of eccentricity governed the global behaviour of the tested columns. The predicated load carrying capacity of the ECC columns needs a magnification factor in case of concentric test, and to take into account the existence of fibres ratio when calculating the area of steel reinforcement for eccentric loading.

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Section: Selection Of the Concrete MIXmentioning

confidence: 99%

Section: Table 2 the Values Of Compressive Strengths For Different Cmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Structural Behavior of Novel ECC Short Columns Subjected to Eccentric Loading

Mashshay

Al-Sibahya

2020

QJES

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“…According to the literature, the square-shaped columns give more ability to carry out the axial compression load over the circular column and the reference columns, considering the slenderness ratio. Adopting wire mesh to form the ferrocement layers as a reinforcement is an effective technique to increase the load carrying capacity of the column [8]. Effective confinement of concrete in a column using square ferrocement jacketing cannot be provided by single or double layers of mesh and mortar only [9].…”

Section: Ferrocementmentioning

confidence: 99%

Study on Retrofitting of RC Column Using Ferrocement Full and Strip Wrapping

Balamuralikrishnan

Madhani

2019

Civ Eng J

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Ferrocement is one of the cement-based composites used for retrofitting and rehabilitation among many applications. Ferrocement is one of the reinforced concrete form with lightweight and thin composite with durability and environmental resistant that strengthen the conventional RC columns to increase its strength and serviceability. This paper examines the performance of the ferrocement wrapping in RC columns experimentally with numerical simulation using ANSYS19. Totally sixteen number of RC column of size 150 mm × 150 mm in cross section and 450 mm in length were cast and tested in laboratory. Twelve are retrofitted columns with respect to volume fraction and wrapping technique. Six columns were retrofitted by full wrapping technique and six columns of strip wrapping technique. The remaining four columns are control columns in virgin condition to compare with the retrofitted columns. Concerning the volume fraction of each specimen, the number of pre-woven mesh layers were single layer, double layer and three layers. C30 concrete grade adopted in all specimens as per ACI Committee 211-1.91 with 4H8 longitudinal reinforcement and H6 of 75mm c/c ties. As the previous researchers examined the ferrocement and proved its efficiency. This study aims to examine the ferrocement in full and strip wrapping technique to compare their efficiency to increase the strength. Finite element analysis using ANSYS19 adopted to compare the experimental data with the numerical simulation. The results are analyzed and observed that the ferrocement has increased the confinement and strength of the RC columns.

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“…Numerous experimental and numerical studies were performed to evaluate the performance of strengthening schemes on the behaviour of RC columns exposed to high temperatures. Significant studies have been investigated the influence of utilising ferrocement confinement in strengthening and repairingRCcolumns [2][3][4][5][6][7][8][9][10][11]. In general, the results indicated that the strength and deformability of RCcolumnscould be enhanced by encased ferrocement.…”

Section: Introductionmentioning

confidence: 99%

Behavior of post and pre-heated RC short columns wrapped with ferrocement

Elhady

Elsayed

2018

The International Conference on Civil and Architecture Engineer

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In this work, experimental and numerical studies were carried out to investigate the behavior of pre-and post-heated RC short columns wrapped by ferrocement overlays. Ten RC columns were constructed and tested expermintally under axial load. The tested columns were divided into unheated columns, post-heated columns, post-heated columns repaired with ferrocement, and heated wrapped columns. All heated columns were heated at a temperature of 300 o C for 3 hours. The experimental results were utilized for validation of the finite element models which developed by using ANSYS 13 software package. Based on the experimental and numerical results it is suggested that an equation that could predict the ultimate load of pst heated RC short columns wrapped by ferrocement. Afterwards,a wide range of the analysis was conducted models were analyzed to observe the effect of other parametric studies on the enhancement of axial load of post-heated columns confined by ferrocement. The results of the design equation were mutually compared with both the experimental and numerical ones. The research proved that the repairing scheme has an efficiency in surpassing the failure load of and improving the ultimate strength of heated columns significantly. The results of both the finite element and the prediction of the equation gave a satisfactory agreement with experimental ones.

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Behaviour of Reinforced Concrete Columns Strengthened with Ferrocement under Compression Conditions: Experimental Approach

Cited by 7 publications

References 9 publications

Structural Behavior of Novel ECC Short Columns Subjected to Eccentric Loading

Structural Behavior of Novel ECC Short Columns Subjected to Eccentric Loading

Study on Retrofitting of RC Column Using Ferrocement Full and Strip Wrapping

Behavior of post and pre-heated RC short columns wrapped with ferrocement

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