Using Polypropylene Fibers in Concrete to achieve maximum strength

Sohaib, N.; Mamoon, R.; Sana, G; Seemab, F

doi:10.15224/978-1-63248-145-0-36

Cited by 20 publications

(17 citation statements)

References 12 publications

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“…Moreover, the mixture which has 1% PPMFs exhibited significantly the highest compressive strength at both ages 7and 28 days, respectively, however, but when exceeding %MF over 1% the reduction in strength occurs at all curing ages, The same effect occurs with the flexural strength test, where according to results of compressive strength, prism with1% PPMFs were chosen to compare with reference samples to predict flexural strength results, the prism with 1%PPMFs reached to the highest result 14.6 MPa at age 7days, while the reference sample did not exceed 13.54 MPa at same age [12][13][14]. To assess the flexural strength recovery, prism specimens from the two mixtures which cracked after 7 days of water curing (1st R) return to further curing for 28 days, then test again (2nd R), Figure 4, and According to Eq.…”

Section: Mechanical Test Resultsmentioning

confidence: 99%

Influence of Microfibers Additive on the Self-healing Performance of Mass Concrete

Dahesh

Othman²,

Abdul-Hamead³

2021

ETJ

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Because cracks are the main problem of mass concrete, this paper investigates an experimental study on the effect of polypropylene microfiber (PPMFs) on self -repair behavior of mass concrete, through study the microstructure, workability, physical, and mechanical properties of mass concrete. PPMFs with a diameter of 18 µm add in different percentages (0, 0.5, 1 and 1.5) % of cement weight. Where the prepared mixture ratio was (1:2:4.8) and the water-cement ratio (W/C) was 0.4. Also, 0.6% of Superplasticizer (SP) % of cement weight to all concrete mixtures was added. In this study, an SEM analysis used to observe the effect of PPMFs on the microstructure of mass concrete, and compressive and flexural strength tests for study the mechanical properties of this. And referring to the analysis and discussion of the results, PPMFs used have changed the microstructure of mass concrete, and have an effective effect on improving compressive strength and flexural strength, and mechanism of sealing the cracks of concrete autogenously. Also, 1% PPMFs (% of cement weight) recorded as the highest addition, which has a positive effect on mass concrete properties to apply it in the construction field.

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Section: Mechanical Test Resultsmentioning

confidence: 99%

Influence of Microfibers Additive on the Self-healing Performance of Mass Concrete

Dahesh

Othman²,

Abdul-Hamead³

2021

ETJ

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“…This tiny hollow sphere has diameter around 10-1000 µm and represents about 1-2% of the fly ash acquired from the procedures of carbon combustion. Cenospheres are significant topic of coal-fired power plants due to its properties which are low density, high mechanical strength and lowering thermal conductivity of concrete [6]. Figures 1 and 2 show the images of cenospheres and fly ash under the scanning electron microscope (SEM).…”

Section: Cenospherementioning

confidence: 99%

“…A tough and thermoplastic polymer or generally known as PP fibers is synthetically produced during petroleum refining process. According to [5,6], mechanical strength of concrete is increasing when PP was added but reducing its workability (Fig. 5).…”

Section: Polypropylene Fiber (Pp)mentioning

confidence: 99%

Thermal Properties of Concrete Containing Cenosphere and Phase Change Materials

Beddu

Basri

Mohamad

et al. 2021

Lecture Notes in Civil Engineering

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“…Polypropylene fiber is added to enhance flexural, tensile, toughness, and impact properties [54][55][56]. PPFs above 0.2% in volume show a reduction in workability [57,58], and fiber content beyond 1% reduces the strength [59,60]. Use of staple or fibrillated fiber instead of monofilament fiber showed increased compressive strength (14.60-17.31%), splitting tensile strength (8.88-13.35%), and modulus of rupture (8.99-24.60%), and decreased shrinkage stain (0.862 to 0.871) [61][62][63].…”

Section: Introductionmentioning

confidence: 99%

Destructive and Non-Destructive Testing of the Performance of Copper Slag Fiber-Reinforced Concrete

Chakrawarthi¹,

Dharmar

Avudaiappan

et al. 2022

Materials

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Concrete technology is adopted worldwide in construction due to its effectiveness, performance, and price benefits. Subsequently, it needs to be an eco-friendly, sustainable, and energy-efficient material. This is achieved by replacing or adding energy-efficient concrete materials from industries, such as ground granulated blast furnace slag, steel slag, fly ash, bottom ash, rice husk ash, etc. Likewise, copper slag is a waste material produced as molten slag from the copper industry, which can be used in concrete production. Copper slag can perform roles similar to pozzolans in the hydration process. This paper extends the comparative study of copper slag concrete with polypropylene fiber (PPF) subjected to destructive and non-destructive testing. Under destructive testing, compressive strength of concrete cubes, compressive strength of mortar cubes, splitting tensile tests on cylindrical specimens, and flexural tests on plain cement concrete were conducted and analysed. Ultrasonic pulse velocity and rebound hammer tests were performed on the samples as per IS13311-Part 1-1992 for non-destructive testing. The 100% replacement of copper slag exhibited a very high workability of 105 mm, while the addition of 0.8% PPF decreased the flowability of the concrete. Hence, the workability of concrete decreases as the fiber content increases. The density of the concrete was found to be increased in the range of 5% to 10%. Furthermore, it was found that, for all volume fractions of fiber, there was no reduction in compressive strength of up to 80% of copper slag concrete compared to control concrete. The 40% copper slag concrete was the best mix proportion for increasing compressive strength. However, for cement mortar applications, 80% copper slag is recommended. The findings of non-destructive testing show that, except for 100% copper slag, all mixes were of good quality compared to other mixes. Linear relationships were developed to predict compressive strength from UPV and rebound hammer test values. This relationship shows better prediction among dependent and independent values. It is concluded that copper slag has a pozzolanic composition, and is compatible with PPF, resulting in good mechanical characteristics.

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Using Polypropylene Fibers in Concrete to achieve maximum strength

Cited by 20 publications

References 12 publications

Influence of Microfibers Additive on the Self-healing Performance of Mass Concrete

Influence of Microfibers Additive on the Self-healing Performance of Mass Concrete

Thermal Properties of Concrete Containing Cenosphere and Phase Change Materials

Destructive and Non-Destructive Testing of the Performance of Copper Slag Fiber-Reinforced Concrete

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