scholarly journals Basalt Fibre Reinforced Concrete Unprotected to Chemical Attack

2020 ◽  
Vol 16 (1) ◽  
pp. 131-137
Author(s):  
Mohankumar Namdeorao Bajad
Keyword(s):  
Reinforced Concrete ◽  
Strength Properties ◽  
Mineral Admixtures ◽  
Fibre Reinforced Concrete ◽  
Ideal Strength ◽  
Sulphate Attack ◽  
Basalt Fibre ◽  
Split Tensile Strength ◽  
Chemical Attack ◽  
The Impact

AbstractThis paper depends on a test examination on basalt fibres which started from volcanic shakes and were dissolved at high temperatures. These stones were accessible from the world’s profound hull. M30 evaluation of concrete was structured according to is 10262:2009 with basalt fibres. The fibres alongside mineral admixtures were utilized in three distinct extents, that is 0 %, 1 %, 2 %, 3 % by heaviness of cement. The goal was to decide the characteristics of fibre reinforced concrete with various fibre extents. The strength properties, for example, compressive strength, split tensile strength, flexural strength, shear strength and the impact on strength of concrete when it was unprotected to sulphate attack after stipulated extended ages of curing were contemplated and thought about. From the examination, it was discovered that the basalt fibre expanded the strength of concrete notwithstanding when unprotected to sulphate attack bit by bit when compared with consistent concrete. The ideal strength of concrete was accomplished with an enlargement of 2 % basalt fibre.

scholarly journals Study on Strength Properties of Basalt Fibre Reinforced Concrete with Partial Replacement of Cement as Metakolic

2019 ◽  
pp. 378-382
Author(s):  
Kalaivani M ◽  
Jagadeesan R ◽  
Mageshkumar P ◽  
Angusenthil K
Keyword(s):  
Reinforced Concrete ◽  
Plain Concrete ◽  
Strength Properties ◽  
Fibre Volume ◽  
Mineral Admixtures ◽  
Partial Replacement ◽  
Fibre Reinforced Concrete ◽  
Reinforced Concrete Structure ◽  
Basalt Fibre ◽  
Increasing Demand

This paper provides a summary of strength properties of basalt fibre reinforced concrete. It contains short discrete fibres that uniformly distributed and randomly oriented. Basalt fibres are in increasing demand as they improve the tensile resistance and ductile performance of plain concrete, thus reducing cracking and leading to improve durability of reinforced concrete structure. The main objective is to investigate the mechanical properties of basalt fibre reinforced concrete containing met kaolin as partial replacement of cement. The fibres were placed in concrete by 0.3%, 0.4% and 0.5% of its total volume of concrete, for each mix 10% of cement is replaced by met kaolin. Three sets of cubes, cylinders and prisms for each mix of M20 grade concrete were casted and tested after 28 days of curing. Experimental results showed that the addition of basalt fibres up to 0.4% fibre volume together with mineral admixtures improved the strength properties of concrete.

scholarly journals Strength and Durability Characteristics of Steel Fibre Reinforced Concrete with Mineral Admixtures

2019 ◽  
Vol 9 (1) ◽  
pp. 3893-3897
Keyword(s):  
Reinforced Concrete ◽  
Fly Ash ◽  
Steel Fibre ◽  
Mineral Admixtures ◽  
Fibre Reinforced Concrete ◽  
Test Results ◽  
Split Tensile Strength ◽  
Steel Fibre Reinforced Concrete ◽  
Granulated Blast Furnace Slag ◽  
Strength And Durability

The present investigation is carried out to study the strength and durability characteristics of steel fibre reinforced concrete, by replacing Ordinary Portland cement with Fly Ash, Ground Granulated Blast Furnace Slag (GGBS) and Metakaolin. In this study, cement is replaced by 30% and 40% with Fly Ash, GGBS and Metakaolin for M30 and M35 grades of concrete. Steel fibres @ 1% by weight of binder is used in all the mixes. Strength characteristics like compressive strength and split tensile strength are tested at 7 days and 28 days age. Additionally, durability tests such as water absorption and Sorptivity tests are conducted after 28days curing. The test results have shown that 30% replacement is optimum for strength criteria. And when metakaolin is used with fly ash, durability properties were improved and workability reduced.

scholarly journals Mechanical Stability of Rayon Fibre Reinforced Concrete

2020 ◽  
Vol 8 (6) ◽  
pp. 5673-5678
Keyword(s):  
Reinforced Concrete ◽  
Tensile Stress ◽  
Mechanical Stability ◽  
Cellulose Fibre ◽  
Strength Properties ◽  
Fiber Reinforced Concrete ◽  
Mix Design ◽  
Fibre Reinforced Concrete ◽  
Split Tensile Strength ◽  
Main Motive

The article analyses the mechanical stability of concrete with additions of rayon fibre by determining the fresh property like workability and strength properties like compressive strength, split tensile strength and flexural strength of concrete of grade M30.The effect of rayon fibre on reinforced concrete in variations of 0%, 0.1%, 0.15% and 0.2% was studied. This work includes the casting and testing of rayon fibre reinforced concrete. The test was conducted after 7 days and 28 days and the results were compared with conventional concrete.The mix design of strength of 30 N/mm2 was implemented using Indian Standard method.Concrete is extensively used in the construction industry. Traditional concrete is incapable of taking higher tensile stress and hence fails upon tensile stress. The Rayon fibre induced concrete is an excellent substitute for this problem. This paper reports on the results of an experimental investigation for assessing the behavior of rayon fibre in reinforced concrete and alsoto study the properties of materials and procedure of mix design of fiber reinforced concrete. The main motive is to determine the properties of concrete by adding rayon fibre to the concrete in certain percentage and comparing it with the traditional concreteand physical characteristics of rayon fibres. Rayon fibre is a manufactured fibre made out of natural sources such as wood, agricultural products that are regenerated and cellulose fibre, which can be used to enhance the bending characteristics of concrete.Micro fibres like rayon provide flexibility and also act as reinforcement. Rayon fibre reinforced concrete can be used in the construction of mega structures.

scholarly journals An Experimental Programme on Fibre Reinforced Concrete made with OPC, Fly Ash and Metakaolin

2019 ◽  
Vol 8 (10) ◽  
pp. 3267-3270
Keyword(s):  
Compressive Strength ◽  
Reinforced Concrete ◽  
Fly Ash ◽  
Mineral Admixtures ◽  
Fibre Reinforced Concrete ◽  
Split Tensile Strength ◽  
Natural Sand ◽  
Manufactured Sand ◽  
Strength And Durability ◽  
Pozzolanic Properties

Most commonly used composite building material in construction industry is Concrete due to ease of construction and its properties like compressive strength and durability. The basic ingredient of Concrete having adhesive nature is Ordinary Portland Cement(OPC). OPC is being replaced with Fly Ash and Metakaolin as these mineral admixtures possess pozzolanic properties which credit for strength gain and cost reduction in concreting. In this investigation, OPC is replaced up to 40% with Fly Ash and Metakaolin for M35 grade of Fibre Reinforced Concrete(FRC). Natural sand is replaced completely with Manufactured sand (M-sand). Steel fibres @ 1% of binder are used. Mechanical properties like compressive strength and split tensile strength at 7 days and 28 days age are tested. Additionally durability tests like water absorption and sorptivity after 28days curing are conducted. The test results indicated that 30% replacement of OPC was optimum for strength criteria, workability of Concrete was decreased with increase in replacement of OPC with Fly Ash and Metakaolin together.

scholarly journals Chloride Diffusion Property of Hybrid Basalt–Polypropylene Fibre-Reinforced Concrete in a Chloride–Sulphate Composite Environment under Drying–Wetting Cycles

Materials ◽  
2021 ◽  
Vol 14 (5) ◽  
pp. 1138
Author(s):  
Yang Luo ◽  
Ditao Niu ◽  
Li Su
Keyword(s):  
Reinforced Concrete ◽  
Coupling Effect ◽  
Early Stage ◽  
Polypropylene Fibre ◽  
Chloride Diffusion ◽  
Fibre Reinforcement ◽  
Fibre Reinforced Concrete ◽  
Basalt Fibre ◽  
Diffusion Property ◽  
Chloride Attack

The effect of fibre reinforcement on the chloride diffusion property of concrete is controversial, and the coupling effect of sulphate erosion and drying–wetting cycles in marine environments has been neglected in previous studies. In this study, the chloride diffusion property of hybrid basalt–polypropylene fibre-reinforced concrete subjected to a combined chloride–sulphate solution under drying–wetting cycles was investigated. The effects of basalt fibre (BF), polypropylene fibre (PF), and hybrid BP–PF on the chloride diffusion property were analysed. The results indicate that the presence of sulphate inhibits the diffusion of chloride at the early stage of erosion. However, at the late stage of erosion, sulphate does not only accelerate the diffusion of chloride by causing cracking of the concrete matrix but also leads to a decrease in the alkalinity of the pore solution, which further increases the risk of corrosion of the reinforcing steel. An appropriate amount of fibre can improve the chloride attack resistance of concrete at the early stage. With the increase in erosion time, the fibre effectively prevents the formation and development of sulphate erosion microcracks, thus reducing the adverse effects of sulphate on the resistance of concrete to chloride attack. The effects of sulphate and fibre on the chloride diffusion property were also elucidated in terms of changes in corrosion products, theoretical porosity, and the fibre-matrix interface transition zone.

A Four Novel Energy Pattern Factor Method for Computation of Weibull Parameter in Impact Strength Reliability of Fibre-Reinforced Concrete

2018 ◽  
Vol 7 (3.12) ◽  
pp. 272
Author(s):  
Gayathri R ◽  
Murali. G ◽  
Parthiban Kathirvel ◽  
Haridharan M.K ◽  
Karthikeyan. K
Keyword(s):  
Reinforced Concrete ◽  
Impact Strength ◽  
Shape Parameter ◽  
Failure Strength ◽  
Fibre Reinforced Concrete ◽  
Test Results ◽  
Weibull Parameter ◽  
Impact Failure ◽  
Novel Method ◽  
The Impact

Impact strength data is a noteworthy factor for designing airport pavements, civilian and military structures etc and it is ought to be modelled precisely. In order to achieve an appropriate modelling data, it is important to select a suitable estimation method. One such commonly used statistical tool is the two parameter Weibull distribution for modelling impact failure strength accurately besides the variations in test results. This study statistically commandsthe variations in the impact failure strength (number of blows to induce failure) of fibre reinforced concrete (FRC) subjected to drop hammer test. Subsequently, a four-different novel method for the computation of Weibull parameter (Shape parameter) based on the earlier researchers test results has been proposed. The accuracy of the proposed four novel method is demonstrated by comparing with power density method and verified with goodness of fit test. Finally, the impact failure strength of FRC is offered in terms of reliability. The proposed four NEPFM is very suitable and efficient to compute the shape parameter in impact failure strength applications. 

scholarly journals Investigative Study of Chicken Feather and Synthetic Hair Fibre on Mechanical and Microstructural Properties of Interlocking Concrete Block

2021 ◽  
Vol 7 (2) ◽  
Author(s):  
S. O. Adetola
Keyword(s):  
Tensile Strength ◽  
Reinforced Concrete ◽  
Physical And Mechanical Properties ◽  
Heterogeneous Material ◽  
Concrete Block ◽  
Fibre Reinforced Concrete ◽  
Chicken Feather ◽  
Split Tensile Strength ◽  
Mechanical And Microstructural Properties ◽  
Hair Fibre

Efforts have been made to improve the quality and performance of concrete structures especially its permeability and durability properties. Concrete is a heterogeneous material containing several components (sand, aggregate, cement, etc.) which vary in size and geometry, and their positions in the concrete enclosure are randomly distributed, giving them defects even before experiencing any form of mechanical loading. In this study, the compositions of Chicken Feather Fibre (CFF) and Synthetic Hair Fibre (SHF) by weight were varied by 0%, 1.5%, 2.5%, 3.5% and 5% for Samples A to E respectively. Physical and Mechanical properties such as water absorption (WA), thickness swelling (TS), compressive and split tensile strength were determined. Results showed that WA and TS property of the fibre reinforced concrete block decreased with decrease in percentage by weight of CFF and SHF and curing days with highest value being 10.01 to a lowest value of 0.14. Also, compressive strength (CS) for sample A increased with increase in curing days from 16.98MPa at 7 days to 20.66MPa at 28 days and sample B has its highest CS at 14 days with 9.98 MPa while other samples decreased progressively. Split Tensile Strength (STS) for sample A increases with increase in curing days from 9.84MPa to 13.64MPa while sample B decreases from 7 to 21 days of curing from 5.43MPa to 4.79MPa and increased at 28 days to 4.92MPa. Samples C, D and E follow same trend as sample B. The SEM study shows that the interlocking concrete block (ICB) containing 0% of chicken feather and synthetic hair fibre has brittle characteristics while other samples containing different percentage by weight of chicken feather and synthetic hair fibre shows ductile characteristics. CFF and SHF enhanced WA, TS, CS and STS of fibre reinforced concrete.

scholarly journals Effect of basalt fibre on the mechanical properties of M70 grade high performance concrete

2020 ◽  
Vol 184 ◽  
pp. 01110
Author(s):  
V Ram Singh ◽  
V Srinivasa Reddy ◽  
S Shrihari ◽  
T Srikanth
Keyword(s):  
High Performance ◽  
High Performance Concrete ◽  
Peak Load ◽  
Strength Properties ◽  
Ultimate Strain ◽  
Maximum Effect ◽  
Fibre Reinforced Concrete ◽  
Basalt Fibre ◽  
Energy Dissipation Capacity ◽  
Strain Responses

The presented work reveals the strength properties of M70 grade high performance basalt fibre reinforced concrete (BFRCC) containing 0.2%, 0.3% and 0.4% basalt fibre content by volume of concrete. 10% Silica fume is admixed for attaining higher strengths as preferred. Compressive, split-tensile and flexural strengths are evaluated. The BFRCC microstructure is found to be improved due to enrichment of interfacial transition zone with chopped basalt fibres. It was found that different fibre lengths require different dosages to yield maximum effect on the properties of concrete. Stress- strain responses of M70 grade BFRSCC yields improved ultimate strain and strain at peak load indicating its energy dissipation capacity at fracture.

scholarly journals Experimental study on strength properties of aluminium fibre reinforced concrete

2021 ◽  
Vol 33 (1) ◽  
pp. 23-29 ◽  
Author(s):  
Y.K. Sabapathy ◽  
S. Sabarish ◽  
C.N.A Nithish ◽  
S.M. Ramasamy ◽  
Gokul Krishna
Keyword(s):  
Experimental Study ◽  
Reinforced Concrete ◽  
Strength Properties ◽  
Fibre Reinforced Concrete
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