scholarly journals Performance Evaluation On Structural Behaviour Of Sisal Fibre Reinforced Concrete

2021 ◽  
Vol 23 (12) ◽  
pp. 393-400
Author(s):  
Dr. G. Dineshkumar ◽  
◽  
Dr. R. Bharathimurugan ◽  
Keyword(s):  
Reinforced Concrete ◽  
Structural Integrity ◽  
Natural Fiber ◽  
Secondary Reinforcement ◽  
Dosage Level ◽  
Structural Behavior ◽  
Sisal Fiber ◽  
Structural Behaviour ◽  
Sisal Fibre ◽  
Micro Cracks

All over the world, construction industries looking forward for the green materials to meet the structural integrity and sustainability in terms of arresting micro cracks in the concrete and also for a secondary reinforcement materials for addition in the concrete. Internal micro cracks in the concrete will reduce the longetivity of the structure and also it results in structural failure. The use of fibres in the concrete is currently used as a secondary reinforcement for strengthening the reinforced concrete members. To make the concrete as a sustainable material and to improve structural integrity in this research Sisal Fibre was used as a secondary reinforcement. Natural fiber such as sisal fibre, appears as an one of the good alternative since they are available in fibrous form and can be extracted from plant leaves at very low cost. In this work, effect of sisal fiber on the strength of concrete for M 25 grade has been studied by varying the percentage of fibers in concrete. Fiber content were varied by 0.05%, 0.10%, 0.15%, 0.20%, 0.25%, 0.30%, 0.35% and 0.40% by volume of concrete. Cubes, Cylinder and Prism were cast to evaluate the Strength Characteristics and to optimize dosage level of fibre in concrete. The reinforced concrete beam was cast by optimum dosage level of fibre to evaluate structural behavior of concrete such as Load deflection, Ductility factor and Stiffness. The result proven, there is significant improvement in structural behavior of Sisal Fibre added Reinforced Concrete when compared to control concrete.

scholarly journals Performance in Binary Characteristics of Sisal Fibre Reinforced Concrete

2019 ◽  
Vol 9 (1) ◽  
pp. 44-47
Keyword(s):  
Compressive Strength ◽  
Reinforced Concrete ◽  
Fly Ash ◽  
Flexural Strength ◽  
Chloride Ions ◽  
Fiber Reinforced Concrete ◽  
Test Method ◽  
Sisal Fiber ◽  
Durability Test ◽  
Sisal Fibre

This research study has experimentally performed on the compressive strength, split tensile flexural strength and durability test method also emphasized in various mixes of high-performance concrete. The maximum compressive strength of concrete was noted for different curing days, while the addition of fly ash 20% with 15% of slag along with1% of sisal fiber reinforced concrete than compared to Plain Portland cement content up to 100%. Further, increasing the cementitious binder content there is a drastic fall in strength gain was observed than that of other mixes. On the contrary, the best mix was identified that's 10% fly ash along with 15% of slag produced the highest compressive strength, split tensile strength and flexural strength for different days of cured the concrete specimens. Also, the durability test performed as prescribed in ATMC 1202, based on the lab test results, it is concluded that the electrical charge passed over all the concrete specimen at 28 and 56 days presents the lesser values 1000 (coulombs) this is the evidently proved that the high resistance towards the corrosions and drastically reduced the chloride ions permeability except for plain cement concrete.

scholarly journals Strength Analysis on Natural Fibre Composite Banana and Sisal Fibres with Epoxy Resin

2019 ◽  
Vol 8 (4) ◽  
pp. 3948-3954
Keyword(s):  
Tensile Strength ◽  
Epoxy Resin ◽  
Bending Strength ◽  
Natural Fiber ◽  
Fibre Composite ◽  
Fiber Composite ◽  
Natural Fibre ◽  
Sisal Fiber ◽  
Strength Analysis ◽  
Sisal Fibre

The tensile strength and bending strength variation on the basis of change in mass of HEMP and SISAL fiber content in the composite. The scope of work is constraint to hemp and sisal fibre composite with epoxy as resin. Study of the characteristics of hemp and sisal fiber, to fabricate the composite of hemp and sisal fiber with epoxy resin and increase the strength of hemp fibers composited with sisal fibers using epoxy to finding the variation of tensile strength of the natural fiber composite- Hemp & Sisal with epoxy resin with different composition and finding the variation of bending strength of the natural fiber compositeHemp and Sisal with epoxy resin with different composition and compare the mechanical properties of Hemp – Sisal composite with glass fiber.

scholarly journals Strengthening of RC Beam using Numerous Natural Fibre Laminates - a Review

2019 ◽  
pp. 394-399
Author(s):  
Sowndharya D ◽  
Kathirvel M ◽  
Yuvaraj K
Keyword(s):  
Reinforced Concrete ◽  
Composite Laminates ◽  
Natural Fiber ◽  
Fiber Composite ◽  
Natural Fibers ◽  
Strength Properties ◽  
Flexural Behavior ◽  
Sisal Fiber ◽  
Reinforced Concrete Structure ◽  
Fiber Flax

Nowadays natural fibers are getting attention from researchers and scholars to use it for construction of buildings because of their sustainability and eco friendly nature. There are various natural fibers like bamboo, sugarcane fiber, coconut coir, sisal fiber, flax fiber etc., are available for construction. Aim of this paper is to give a detailed study about various experiments conducted on the reinforced concrete structure that are strengthened with fiber laminate. The failure load, ductility, crack pattern, strength properties, flexural behavior of reinforced concrete beam, viscous and mechanical properties and strain characteristics of strengthened beams with different natural fiber composite laminates are reviewed. The result shows that the strength, ductility and durability properties of concrete are increased according to their proportions.

scholarly journals Diagnosis and Assessment of Deep Pile Cap Foundation of a Tall Building Affected by Internal Expansion Reactions

Buildings ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 104
Author(s):  
Fernando A. N. Silva ◽  
João M. P. Q. Delgado ◽  
António C. Azevedo ◽  
Tahlaiti Mahfoud ◽  
Abdelhafid Khelidj ◽  
...  
Keyword(s):  
Compressive Strength ◽  
Reinforced Concrete ◽  
Modulus Of Elasticity ◽  
Dynamic Modulus ◽  
Structural Integrity ◽  
Gas Permeability ◽  
Ettringite Formation ◽  
Dynamic Modulus Of Elasticity ◽  
Pile Cap ◽  
Deterioration Process

Early deterioration of reinforced concrete foundations has been often reported in recent years. This process is usually characterized by an extensive mapping cracking process on concrete surfaces that results from several types of Internal Swelling Reaction (ISR). In this paper, a real case study of a tall reinforced concrete building with a severe deterioration process installed in its deep foundations is discussed. Laboratory tests were performed in concrete drilled cores extracted from a deep pile cap block 19 years after the beginning of construction. Tests to assess the compressive strength, the static and the dynamic modulus of elasticity, the gas permeability, and electron microscopy scanning to find out the primary mechanism responsible for the deterioration observed during in situ inspections. Chemical alterations of materials were observed in concrete cores, mainly due to Delayed Ettringite Formation (DEF), which significantly affected the integrity and durability of the structure. Dynamic modulus of elasticity showed to be a better indicator of damage induced by ISR in concrete than compressive strength. Procedures to strengthen the deteriorated elements using prestressing proved to be an efficient strategy to recover the structural integrity of pile caps deteriorated due to expansions due to ISR.

scholarly journals Structural Behavior of Precast Lightweight Foam Concrete Sandwich Panel with Double Shear Truss Connectors under Flexural Load

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Noridah Mohamad ◽  
A. I. Khalil ◽  
A. A. Abdul Samad ◽  
W. I. Goh
Keyword(s):  
Compressive Strength ◽  
Sandwich Panel ◽  
Crack Pattern ◽  
Structural Behavior ◽  
Foam Concrete ◽  
Structural Behaviour ◽  
Shear Connectors ◽  
Double Shear ◽  
Partially Composite ◽  
Lightweight Foam

This paper presents the structural behaviour of precast lightweight foam concrete sandwich panel (PFLP) under flexure, studied experimentally and theoretically. Four (4) full scale specimens with a double shear steel connector of 6 mm diameter and steel reinforcement of 9 mm diameter were cast and tested. The panel’s structural behavior was studied in the context of its ultimate flexure load, crack pattern, load-deflection profile, and efficiency of shear connectors. Results showed that the ultimate flexure load obtained from the experiment is influenced by the panel’s compressive strength and thickness. The crack pattern recorded in each panel showed the emergence of initial cracks at the midspan which later spread toward the left and right zones of the slab. The theoretical ultimate load for fully composite and noncomposite panels was obtained from the classical equations. All panel specimens were found to behave in a partially composite manner. Panels PLFP-3 and PLFP-4 with higher compressive strength and total thickness managed to obtain a higher degree of compositeness which is 30 and 32.6 percent, respectively.

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