scholarly journals Effect of Using Hybrid Polypropylene and Glass Fibre on the Mechanical Properties and Permeability of Concrete

Materials ◽  
2019 ◽  
Vol 12 (22) ◽  
pp. 3786 ◽  
Author(s):  
Abubaker A. M. Ahmed ◽  
Yanmin Jia
Keyword(s):  
Mechanical Properties ◽  
Reinforced Concrete ◽  
Glass Fibre ◽  
Single Fibre ◽  
Air Permeability ◽  
Fibre Content ◽  
Peak Performance ◽  
Fibre Reinforced Concrete ◽  
Performance Limit ◽  
Hybrid Fibre

A comprehensive program of experiments consisting of compression, uniaxial compression, direct shear, flexural as well as splitting tensile and air permeability tests were performed to analyse the effect of the level of fibre dosage and the water–cement ratio on the physical properties of hybrid fibre-reinforced concrete (HFRC). Two types of fibres were studied in terms of their effect on the properties of HFRC. The results indicated that the mechanical properties of concrete were significantly improved by increasing the fibre content. However, increasing the percentage fibre content past a certain peak performance limit (0.9% glass fibre (GF) and 0.45% polypropylene fibre (PPF)) led to a decrease in strength compared to reference mixes. Additionally, the incorporation of hybrid fibres yielded an increase in air permeability in the tested specimens. The results showed that the strength-related properties of HFRC were superior to the properties of single fibre-reinforced concrete.

scholarly journals ENHANCEMENTOF MECHANICAL PROPERTIES OF LIGHTWEIGHT HYBRID FIBRE REINFORCED CONCRETE (LWHFRC)

2020 ◽  
Vol 8 (9) ◽  
pp. 86-104
Author(s):  
Eniyachandramouli Gunasekaran ◽  
◽  
Govindhan Shanmugam ◽  
Ranjithselvan Karuppusamy ◽  
◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Reinforced Concrete ◽  
Fibre Reinforced Concrete ◽  
Hybrid Fibre

scholarly journals Discussion: Mechanical properties of hybrid fibre-reinforced concrete – analytical modelling and experimental behaviour

2016 ◽  
Vol 68 (22) ◽  
pp. 1183-1186 ◽  
Author(s):  
Aref Abadel ◽  
Husain Abbas ◽  
Tarek Almusallam ◽  
Yousef Al-Salloum ◽  
Nadeem Siddiqui ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Reinforced Concrete ◽  
Analytical Modelling ◽  
Fibre Reinforced Concrete ◽  
Hybrid Fibre ◽  
Experimental Behaviour

Mechanical Properties and Stress-Strain Behaviour of Hybrid Fibre-Reinforced Self-Compacting Concrete

2014 ◽  
Vol 984-985 ◽  
pp. 677-683
Author(s):  
T. Meena ◽  
G. Elangovan ◽  
R. Ganesh
Keyword(s):  
Mechanical Properties ◽  
Reinforced Concrete ◽  
Fly Ash ◽  
Fibre Reinforced Concrete ◽  
Self Compacting Concrete ◽  
Stress Strain ◽  
Volume Fractions ◽  
Strain Behaviour ◽  
Hybrid Fibre ◽  
Hardened State

Self-Compacting Concrete (SCC) is a highly flowable, self-levelling concrete. Just as in Fibre Reinforced Concrete (FRC), fibres can be incorporated into SCC also to get FRSCC. In the present study hybrid fibres namely, Polypropylene and hooked ended Steel fibres are incorporated in different volume fractions and their fresh and hardened state properties have been studied. Fly ash and Silica Fume obtained as waste from industries are used as replacement for cement, the replacement being 10% and 5% respectively. The behaviour of HFRSCC under compression, tension and flexure has been experimentally observed. The stress-strain behaviour of SCC and HFRSCC have also been studied by varying the combinations of volume fractions of hybrid fibres.

scholarly journals Mechanical Properties of High-Performance Hybrid Fibre-Reinforced Concrete at Elevated Temperatures

2021 ◽  
Vol 13 (23) ◽  
pp. 13392
Author(s):  
Moawiah Mubarak ◽  
Raizal Saifulnaaz Muhammad Rashid ◽  
Mugahed Amran ◽  
Roman Fediuk ◽  
Nikolai Vatin ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Reinforced Concrete ◽  
High Performance ◽  
Elevated Temperatures ◽  
High Performance Concrete ◽  
Concrete Strength ◽  
Fibre Reinforced Concrete ◽  
Explosive Spalling ◽  
Hybrid Fibre ◽  
Before And After

Deterioration of concrete’s integrity under elevated temperature requires an alteration in its composition to have better thermal stability. Fibre-reinforced concrete has shown significant improvements in concrete strength and this paper aimed to investigate the influence of steel (ST) and polypropylene (PP) fibres on the behaviour of high-performance concrete (HPC) exposed to elevated temperatures. Six mixtures were prepared and cast by adding one or two types of polypropylene fibre (54 and 9 mm) at 0.25 or 0.5% and either singly or in a hybrid combination, along with a fixed volumetric content at 1% of five-dimensional hooked steel (5DH) fibres. At the age of 28 days, samples were heated to the targeted temperature of 800 °C and cooled down naturally to the laboratory temperature. Visual inspection, flexural, split tensile and compressive strengths were examined before and after the exposure to elevated temperatures. Results exhibited that the hybridization of long and short PP fibres, along with the ST fibres, has notably improved all residual mechanical properties of HPC and kept the integrity of concrete after exposure to elevated temperatures. In addition, PP fibres can significantly prevent spalling, but ST fibres were ineffective in mitigating explosive spalling in beams specimens.

scholarly journals Influence of Hybrid Fibre on the Mechanical Properties of Concrete

2019 ◽  
Vol 9 (1) ◽  
pp. 2637-2641
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Compressive Strength ◽  
Reinforced Concrete ◽  
Volume Fraction ◽  
Plain Concrete ◽  
Strength Test ◽  
Fibre Reinforced Concrete ◽  
Split Tensile Strength ◽  
Hybrid Fibre

This study presents the experimental investigation carried out to study the mechanical properties of concrete with and without the addition of fibres to it.d Concrete is the most consumed material in the world which has the property of strong in compression and weak in tension. Also plain concrete possess very limited ductility and little resistance to cracking. Hence fibres are introduced in the concrete to improve the tensile strength & brittleness of the concrete. These fibres which are closely spaced and dispersed uniformly in the concrete arrest the micro and macro cracks and improve the tensile strength of concrete. Concrete admixed with such fibres are known as Fibre Reinforced Concrete. The combination of two (or) more fibres called as Hybridization is carried out in this work. M25 grade concrete is designed as per IS 10262:2009 with the volume fraction of 0-1.5%. The workability of the concrete is affected due to the addition of fibres and hence super plasticizers are added to the concrete. The fibres considered for the study are (i) Crimped Steel Fibre (0-1.5%) and (ii) Shortcut Glass Fibre (0.1-0.2%). The behaviour of the hybrid fibre reinforced concrete is investigated by conducting compressive strength test on cube specimen of size 150mmx150mmx150mm and split tensile strength test on cylinder specimen of size 150mm diameter and 300mm height. From the experimental results, the optimum fibre combinations for maximum compressive strength and spilt tensile strength of concrete are identified.

Mechanical properties of hybrid fibre-reinforced concrete – analytical modelling and experimental behaviour

2016 ◽  
Vol 68 (16) ◽  
pp. 823-843 ◽  
Author(s):  
Aref Abadel ◽  
Husain Abbas ◽  
Tarek Almusallam ◽  
Yousef Al-Salloum ◽  
Nadeem Siddiqui
Keyword(s):  
Mechanical Properties ◽  
Reinforced Concrete ◽  
Analytical Modelling ◽  
Fibre Reinforced Concrete ◽  
Hybrid Fibre ◽  
Experimental Behaviour
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