Suitability of Synthetic Fiber for the Construction of Concrete Pavements (original) (raw)

Suitability of Concrete Reinforced with Synthetic Fiber for the Construction of Pavements

2013

Shrinkage cracking of concrete is a major problem in plain cement concrete pavements especially in tropical regions. To overcome shrinkage cracking of plain concrete, sometimes the addition of synthetic fiber to the concrete mix is suggested. This paper briefly discusses the effects of addition of polypropylene discrete and fibrillated fibre on the properties of a paving grade concrete mix of 48 MPa compressive strength at 28-day. Six concrete mixes with fiber dosages 0.05%, 0.10% and 0.15% by volume fraction besides the control concrete mix were manufactured. Discrete and fibrillated polypropylene fiber was used in this study. The properties such as settlement, compressive strength, drying shrinkage, and abrasion resistance of the concrete were evaluated. The study suggested a significant reduction in settlement and drying shrinkage without significant change in compressive strength for the concrete mixes reinforced with fiber. Further, an improved abrasion resistance for the concr...

IJERT-Improvement and Performance of Cement Concrete pavement using Polypropylene Fiber

International Journal of Engineering Research and Technology (IJERT), 2013

https://www.ijert.org/improvement-and-performance-of-cement-concrete-pavement-using-polypropylene-fiber https://www.ijert.org/research/improvement-and-performance-of-cement-concrete-pavement-using-polypropylene-fiber-IJERTV2IS90613.pdf The use of Fiber Reinforced Concrete (FRC) in highway pavements has been limited. However, its use in other areas indicates that there is potential for significant benefits from its use in pavements. Possible benefits include, improved pavement durability, reduced studded-tyre wear and increased pavement life. The major benefits of Fiber Reinforced concrete in highway pavements would be improved durability and the resultant increase in service life.In present study include mix design of M40 grade Plain Concrete with different percentage of Class F fly ash 15 and 25%.to improve the engineering properties viz. Compressive strength, flexural strength, tensile strength and abrasion resistance 12mm polypropylene fibers is used at 0.2%,0.4%,0.6% by the mass of cementations material. The test result for compressive strength at 3,7,28 days for plain concrete with and without fly ash and polypropylene fibers increases at 0.2, 0.4% in order of 3-7% after adding 0.6% reduced strength by 3%. tensile strength at 28 days for plain concrete with and without fly ash and polypropylene fibers increases at 0.2,0.4% in order of 24-38% after adding 0.6% reduced strength by 25%. Flexural strength at 28 days for plain concrete with and without fly ash and polypropylene fibers increases at 0.2% in order of 24-38% after adding 0.6% reduced strength by 25%. Abrasion resistance at 28 days reduced % of wear with increasing percentage of polypropylene fibers with and without fly ash.

Efficacy Appraisal of Polypropylene Fibers in Pavement Quality Concrete

2016

Road transportation is without a doubt the life line of the country and its advancement is a pivotal worry to accomplish fast and supported monetary development in the changing technological development. The conventional bituminous pavement and their requirements for constant support and restoration operations focuses towards the extension for an incessant method, with concrete road strengthening to be a genuine activity for quite a while to come. At the point when rigid pavement are built, the blend configuration of cement concrete is engaged around the compressive quality, which is used to ensure that the objective flexural quality as envisioned in framework is achieved before long, however extravagant in starting theory, is modest in long keep running in light of low upkeep costs. Present paper manages exploratory examination on mechanical properties of M40 evaluation concrete by concreting polypropylene fibers in measurements of 0.5%, 0.75% and 1.0% by weight of cement with the ...

Effects of Polypropylene Fiber Content on Strength and Workability Properties of Concrete

Polytechnic Journal

Low tensile strength of plain concrete is due to the inherent presence of microcracks due to drying shrinkage occurrences or other causes of volume changes in concrete. The addition of a proper amount of fibers to concrete would act as crack arrester thus improves its static or dynamic properties. In this paper, the concrete with different amount of polypropylene fiber was investigating to find out the fibers effect on its fresh and mature properties. A plain concrete mix (reference mix) prepared for comparison purposes. Nine concrete mixes were prepared with different fiber volume fraction (FVF) ranging from 0.06% to 2.16%. It has been found out that the fiber content of the concrete mix will increase compressive, splitting, and flexural strengths of the concrete at the age of 28 days. The strengths increased and reached their maximum value at a corresponding (FVF) of about 0.36%. In comparison with the reference mix, the increase in the maximum compressive strength was about 18%, ...

Evaluating Mechanical Properties of Concrete by Adding Polypropylene Fibers.

2020

This research deals with the effect of Polypropylene Fibers on the properties of concrete. Polypropylene fibers are synthetic fibers which possess high tensile strength, high modulus of elasticity and also good bonding when added to concrete. In this research work, Polypropylene fibers of two different length 6mm and 12 mm were added to concrete in different proportions and then the performance of concrete in terms of strength and cracks propagation were analyzed. For this purpose, three batches of FRC (Fiber reinforced concrete) and one batch of PC (Plan concrete) were made. PC (Plan concrete) sample was used a bench mark with which the other FRC concrete composite were compare in terms of strength and performance. FRC-1 concrete composite contained 50% 6mm length of Polypropylene fibers and 50% 12mm length of Polypropylene fibers. FRC-2 concrete composite had 75% 6mm length of Polypropylene fibers and 25% 12mm length of Polypropylene fibers. Similarly, FRC-3 Concrete contained 25% 6mm length of Polypropylene fibers and 75% 12mm length of Polypropylene fibers. Large number of samples were prepared in laboratory and tests were carried out at the curing age of 28 days. Several laboratory tests were done on the concrete samples such as compression test, split tensile test, modulus of rupture and pure shear test. After analyzing the data from laboratory tests and experiments, it was evident that the performance of concrete in term of strength and cracking behavior were improved after the adding of Polypropylene fibers.

Experimental Study on Performance of Poly Propylene Fiber on Concrete

2018

The concept of using fibers in concrete to improve resistance to cracking and fragmentation is old and intuitive. During the last 30 years different types of fibers and fiber materials were introduced and are being continuously introduced in the market as new applications. These fibers can be made of metals, natural, glass or organic materials. In the past three decades, extensive research on fiber reinforced concrete has shown that some types of fibers can be added to concrete to improve its gradient on the surface of fresh and mature concrete due to the severe environmental conditions of the Chandigarh area of India has been marked as one of the several causal factors of deterioration of reinforced concrete in the country. Commercially available synthetic fibers namely, polypropylene, is used to study the effects of polypropylene fiber used for reinforcing concrete mixes and to obtain basic strength. The compressive, splitting tensile strength tests were performed by changing fibe...