Interim report on the investigation of the fresh properties of synthetic fiber-reinforced concrete for the Richardson Landing casting field

This paper evaluated mixed mode I/II fracture toughness of fiber-reinforced concrete using cracked semi-circular bend (SCB) specimens subjected to three-point bending test. Additionally, a comparison was made between the experimental results and the estimations made by different theoretical criteria. Natural and synthetic fibers at various concentrations were used in this study. After producing cracks in SCB specimens at different inclination angles to induce different mixed mode loading conditions (from pure mode I to II), the fracture toughness of SCB specimens was determined. Furthermore, the compressive, splitting tensile, and flexural strength of natural and synthetic fiber-reinforced concrete were measured after 7 and 28 days of curing. While there is an increase in the aforementioned strengths with fiber content increase, 0.3% was found to be the optimum percentage regarding fracture toughness for both fibers. Also, the comparison between the experimental and theoretical results showed that generalized maximum tangential stress criterion estimated the experimental data satisfactorily.

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Realistic Prediction of Post-Cracking Behaviour in Synthetic Fiber Reinforced Concrete Beams

Journal of the Korea Concrete Institute ◽

10.4334/jkci.2002.14.6.900 ◽

2002 ◽

Vol 14 (6) ◽

pp. 900-909 ◽

Cited By ~ 2

Keyword(s):

Reinforced Concrete ◽

Concrete Beams ◽

Fiber Reinforced Concrete ◽

Reinforced Concrete Beams ◽

Synthetic Fiber ◽

Fiber Reinforced ◽

Realistic Prediction

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Specification for Synthetic Fiber Reinforced Concrete Culvert, Storm Drain, and Sewer Pipe

10.1520/c1818-18 ◽

2018 ◽

Author(s):

Keyword(s):

Reinforced Concrete ◽

Fiber Reinforced Concrete ◽

Synthetic Fiber ◽

Fiber Reinforced ◽

Sewer Pipe ◽

Storm Drain

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Experimental Research on Deep Beam using Hybrid Fiber Reinforced Concrete with M-Sand

International Journal of Innovative Technology and Exploring Engineering - Special Issue ◽

10.35940/ijitee.i7166.079920 ◽

2020 ◽

Vol 9 (9) ◽

pp. 305-308

Keyword(s):

Reinforced Concrete ◽

High Performance ◽

Research Work ◽

Fiber Reinforced Concrete ◽

Polypropylene Fibers ◽

Deep Beam ◽

Fiber Reinforced ◽

Fresh Properties ◽

Hybrid Fiber ◽

Different Types

Concrete is hard but liable to break easily. Hybrid fiber reinforced concrete offers several economical and technical benefits. The use of fibers extends its possibilities. The hybridization of different types of fibers may play important roles in arresting cracks and thus achieve high performance of concrete. The main reason for adding glass ,steel and polypropylene to improve the ductility of concrete.The present research work is aimed at studying, the deep beam using three different types of fibers such as glass 0.3%, steel 0.75% & 1% and polypropylene fibers 0.3% were added to volume of concrete. The mix design has been arrived based on IS code method for M20 grade of concrete. An investigation is carried out to evaluate the fresh Properties and mechanical Properties of Hybrid Fiber Reinforced Concrete (HFRC). The result shows that hybrid fiber reinforced deep beams achieved better performance than the ordinary RC deep beam under application of load.

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SCOPE OF IMPROVING MECHANICAL CHARACTERISTICS OF CONCRETE USING NATURAL FIBER AS A REINFORCING MATERIAL

Malaysian Journal of Civil Engineering ◽

10.11113/mjce.v32n2.654 ◽

2020 ◽

Vol 32 (2) ◽

Author(s):

Sristi Das Gupta ◽

MD Shahnewaz Aftab ◽

Hasan Mohammod Zakaria ◽

Chaity Karmakar

Keyword(s):

Mechanical Properties ◽

Tensile Strength ◽

Reinforced Concrete ◽

Fiber Reinforced Concrete ◽

Synthetic Fiber ◽

Jute Fiber ◽

Fiber Reinforced ◽

Plastic Shrinkage ◽

Shrinkage Cracks ◽

Reinforcing Material

Using natural (Jute) fiber in concrete as a reinforcing material can not only augment the concrete strength but also restrict the use of synthetic fiber which is environmentally detrimental. To achieve this goal, this study evaluated compressive strength, tensile strength and plastic shrinkage of concrete incorporating ‘Natural (Jute)’ fiber of different length (15 mm and 25 mm) with various mix proportions of 0.10%, 0.2%, 0.3% and 0.4% respectively by volume of concrete. Concrete is vulnerable to grow shrinkage cracks because of high evaporation rate in dry and windy conditions. Incorporating of fibers could abate development of this crack. The large length (25 mm) and higher content ( 0.3%) of reinforcing materials (jute fiber) result to the lowering of mechanical properties of JFRC compare to plain concrete. But in the incorporation of short (15 mm) and low fiber content ( 0.3%), enhances the mechanical properties of the same JFRC. Inclusion of 0.3% (15 mm length) fiber gave maximum enhancement of both concrete compressive and tensile strength by 12.4% and 58% respectively compared to the non-fiber reinforced concrete. A drastic suppression of crack occurrence and area of crack between non-fiber reinforced concrete and fiber reinforced concretes was attained. Experimental results of incorporating 0.1–0.4% fiber with 15 mm length in concrete revealed that plastic shrinkage cracks were decreased by 75–99% in contrast to non-fiber reinforced concrete. Therefore, it is concluded that the incorporation of jute fiber in making FRC composite would be one of the favorable methods to enhance the performance of concrete.

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