Flexural behaviour of concrete slabs reinforced with steel sheet

1982 ◽  
Vol 15 (4) ◽  
pp. 279-282 ◽  
Author(s):  
H. Lerchenthal ◽  
I. Rosenthal
Keyword(s):  
Steel Sheet ◽  
Concrete Slabs ◽  
Flexural Behaviour

scholarly journals Experimental and Numerical Investigations on Flexural Behaviour of Prestressed Textile Reinforced Concrete Slabs

2021 ◽  
Vol 7 (6) ◽  
pp. 1084-1097
Author(s):  
Dang Quang Ngo ◽  
Huy Cuong Nguyen
Keyword(s):  
Tensile Strength ◽  
Reinforced Concrete ◽  
Three Dimensional ◽  
Concrete Slabs ◽  
High Tensile Strength ◽  
Flexural Behaviour ◽  
Textile Reinforced Concrete ◽  
Prestressing Steel ◽  
Reinforced Concrete Slabs ◽  
Three Dimensional Finite Element

Nowadays, concrete is mostly prestressed with steel. But the application of prestressing steel is restricted in a highly corrosive environment area due to corrosion of prestressing steel, leading to a reduction in strength and may cause sudden failure. Carbon textile is considered an alternate material due to its corrosive resistance property, high tensile strength, and perfectly elastic. Prestressing is also the only realistic way to utilize fully ultra-high tensile strength in carbon textile material. In this study, experimental and numerical analyses were carried out for the flexural behaviour of prestressed and non-prestressed carbon textile reinforced concrete slabs. This study also focuses on the influences of textile reinforcement ratios, prestressing grades on the flexural behaviour of carbon textile reinforced concrete (TRC). Fifteen precast TRC slabs were tested, of which six were prestressed to various levels with carbon textile. The obtained results show that prestressing textile reinforcement results in a higher load-bearing capacity, stiffness, and crack resistance for TRC slabs. The first-crack load of the prestressed specimens increased by about 85% compared with those of non-prestressed slabs. Three-dimensional finite element models were developed to provide a reliable estimation of global and local response. The modeling techniques accurately reproduced the experimental behaviour. Doi: 10.28991/cej-2021-03091712 Full Text: PDF

scholarly journals Flexural behaviour of concrete slabs reinforced with GFRP bars and hollow composite reinforcing systems

2020 ◽  
Vol 236 ◽  
pp. 111836 ◽  
Author(s):  
Mohammed Al-Rubaye ◽  
Allan Manalo ◽  
Omar Alajarmeh ◽  
Wahid Ferdous ◽  
Weena Lokuge ◽  
...  
Keyword(s):  
Concrete Slabs ◽  
Flexural Behaviour ◽  
Gfrp Bars

scholarly journals Flexural behaviour of basalt fibred concrete slabs made with basalt fibre reinforced polymer rebars

2021 ◽  
Vol 309 ◽  
pp. 01055
Author(s):  
Md Hasham ◽  
V Reddy Srinivasa ◽  
M V Seshagiri Rao ◽  
S Shrihari
Keyword(s):  
Particle Packing ◽  
Concrete Slabs ◽  
Flexural Behaviour ◽  
Basalt Fibre ◽  
Conventional Concrete ◽  
High Particle ◽  
Reinforced Polymer ◽  
Micro Cracks ◽  
Fibre Reinforced Polymer ◽  
Steel Rebars

In this paper, the flexural behaviour of M30 grade basalt fibred concrete slabs made with basalt fibre reinforced polymer rebars are studied and compared with slabs made with steel rebars. The optimum percentage of basalt is 0.3% for 50mm length basalt fibres. Due to high particle packing density in concrete made with basalt fibre micro cracks are prevented due to enhanced fatigue and stress dissipation capacity. Addition of basalt fibres to enhances the energy absorbtion capacity or toughness thereby enhancing the resistance to local damage and spalling. Addition of basalt fibres controlled the crack growth and crack width. Load at first crack of M30 grade basalt fibred concrete slabs made with basalt fibre reinforced polymer rebars is more than M30 grade conventional concrete slabs made with steel rebars because the with addition of basalt and BFRP bars will make either the interfacial transition zone (ITZ) strong or due to bond strength of concrete slabs made with basalt fibre reinforced polymer rebars. The ultimate strength in M30 grade basalt fibred concrete slabs made with basalt fibre reinforced polymer rebars is more than conventional concrete slabs made with steel rebars. Deflection at the centre of M30 grade basalt fibred concrete slabs made with basalt fibre reinforced polymer rebars is almost double than the conventional concrete slabs made with steel rebars. Toughness indices evaluated for M30 grade basalt fibred concrete slabs made with basalt fibre reinforced polymer rebars indicates that basalt fibre and BFRP bars will enhance the energy absorbtion capacity of slabs.

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