Performance evaluation of polypropylene fibre reinforced recycled aggregate concrete

Das, Chandra Sekhar; Dey, Tuli; Dandapat, Ramkrishna; Mukharjee, Bibhuti Bhusan; Kumar, Jitendra

doi:10.1016/j.conbuildmat.2018.09.036

Cited by 202 publications

(111 citation statements)

References 48 publications

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“…Similarly, for the RAC mixes, the maximum improvement examined in the RAC3 mix with the same NF content, as compared with the unreinforced RAC1 mix, was 80.6%, which has a split tensile strength of 5.6 MPa. These results were in a good agreement with other studies [15,27].…”

Section: Split Tensile Strenthsupporting

confidence: 93%

“…For example, the CSR of the RAC3 concrete was 194% at 7 days, while the value for the CAC3 mix was only 136%. More importantly, the improved behavior of concrete with NF may be the result of the high content of fibers which form a network that acts as a bridge in the cement matrix, resulting in a reduction of micro-cracks [16,27,38]. values were obtained from the RAC3 mix with an NF content of 1.2 kg/m 3 , which means that, as the NF content increases, the compressive strength development of recycled aggregate concrete becomes more effective.…”

Section: Compressive Stregnthmentioning

confidence: 99%

“…The ultrasonic pulse velocity (UPV) measurements have been well known as non-destructive methods to assess the quality of concrete [14,27,39,40]. The UPV values for the CAC and RAC mixes measured at 7, 28, and 91 days are shown in Figure 6.…”

Section: Ultrasonic Pulse Velocitymentioning

confidence: 99%

“…There have been numerous studies on the applications of steel fiber [17][18][19][20][21][22][23] and polypropylene (PP) fibers [24][25][26] in concrete. Moreover, the PP fiber also enjoys popularity in the domain of recycled aggregate concrete [4,27]. However, although nylon fiber (NF) shows a rising acceptance in the literatures [28][29][30], it remains unpopular compared to steel fiber and PP fiber.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Nylon Fiber Addition on the Performance of Recycled Aggregate Concrete

Lee

2019

Applied Sciences

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The adhered mortars in recycled aggregates (RA) may lower the performance of the concrete, by for instance reducing its strength and durability, and by cracking. In the present study, the effect of nylon fiber (NF) on the permeability as well as on the mechanical properties of concrete incorporating 100% RA was experimentally investigated. Concrete was produced by adding 0, 0.6 and 1.2 kg/m3 of NF and then cured in water for a predetermined period. Measurements of compressive and split tensile strengths, ultrasonic pulse velocity and total charge passed through concrete were carried out, and the corresponding test results were compared to those of concrete incorporating crushed stone aggregate (CA). In addition, the microstructures of 28-day concretes were examined by using the FE-SEM technique. The test results indicated that recycled coarse aggregate concrete (RAC) showed a lower performance than crushed stone aggregate concrete (CAC) because of the adhered mortars in RA. However, it was obvious that the addition of NF in RAC mixes was much more effective in enhancing the performance of the concretes due to the crack bridging effect from NF. In particular, a high content of NF (1.2 kg/m3) led to a beneficial effect on concrete properties compared to a low content of NF (0.6 kg/m3) with respect to mechanical properties and permeability, especially for RAC mixes.

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Section: Split Tensile Strenthsupporting

confidence: 93%

Section: Compressive Stregnthmentioning

confidence: 99%

Section: Ultrasonic Pulse Velocitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of Nylon Fiber Addition on the Performance of Recycled Aggregate Concrete

Lee

2019

Applied Sciences

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“…In order to modify the properties of concrete, the polypropylene fiber (PPF) could be added [17][18][19][20][21][22][23][24][25][26][27][28], and the PPF was found to be very effective in improving the crack resistance compared to other methods. The addition of PPF was found to decrease the workability [17] and increase the compressive strength [29][30][31][32], crack resistance [33][34][35], and durability [31,[36][37][38][39][40][41] given that the PPF was within an optimum content. The addition of fibers in concrete can also decrease the shrinkage and reduce the porosity [42,43].…”

Section: Introductionmentioning

confidence: 99%

Effects of Aggregate Micro Fines (AMF), Aluminum Sulfate and Polypropylene Fiber (PPF) on Properties of Machine-Made Sand Concrete

Wang

Wang³

2019

Applied Sciences

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With the depletion and increasing demand of river sand, machine-made sand could be used more and more in concrete. In order to improve the properties of machine-made sand concrete, the effects of the aggregate micro fines (AMF) content, aluminum sulfate, and polypropylene fibers (PPF) on the slump, compressive strength, water permeability, and the chloride permeability coefficients were investigated through a single factor test method, and related mechanisms were analyzed. The results show that the optimum contents of AMF, aluminum sulfate, and the polypropylene fiber are 10 wt%, 1 wt%, and 0.6 kg/m3, respectively. The optimum content of AMF improved the compactness of concrete. The addition of aluminum sulfate promoted the initial formation of ettringite, and thereby improved the compressive strength and the permeability resistance. The polypropylene fiber can modify the pore structure distribution of concrete and reduce the porosity, thereby improving the impermeability of the concrete. The compressive strength of the machine-made sand concrete could be increased by more than 20%, and the water/chloride permeability coefficients could be decreased by more than 45%.

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Influence of different fibers on mechanical and durability performance of concrete with silica fume

Ali

Raza

Hussain

et al. 2020

Structural Concrete

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Durability and ductility of plain cement concrete (PC) can be upgraded by the simultaneous incorporation of fibers and supplementary cementitious materials. To this end, influence of different fibers such as steel fiber (SF), glass fiber (GF), carbon fiber (CF), and polypropylene fiber (PF) is studied on mechanical and durability properties of concrete with and without silica fume. Silica fume was used as 10% by mass replacement of ordinary Portland cement. Various mechanical and durability properties were studied such as compressive strength, split tensile strength, flexural strength, water absorption (WA), chloride penetration (CP), and acid attack resistance of concrete. The results of testing revealed that silica fume improved the efficiency of fibers in resisting the tensile and flexural loads. The composite effect of fiber and silica fume was more beneficial than the sum of the effects of their individual incorporation. Steel fiber‐reinforced concrete (SFRC) showed better mechanical performance at 28 days as compared to other FRCs but CFRC showed better performance at 180 days. PFRC and CFRC exhibited better durability performance than SFRC and GFRC. Silica fume helped in reducing the WA and CP of FRCs and improved their acid attack resistance.

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Performance evaluation of polypropylene fibre reinforced recycled aggregate concrete

Cited by 202 publications

References 48 publications

Effect of Nylon Fiber Addition on the Performance of Recycled Aggregate Concrete

Effect of Nylon Fiber Addition on the Performance of Recycled Aggregate Concrete

Effects of Aggregate Micro Fines (AMF), Aluminum Sulfate and Polypropylene Fiber (PPF) on Properties of Machine-Made Sand Concrete

Influence of different fibers on mechanical and durability performance of concrete with silica fume

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