Mechanics Performance of High-Performance Concrete with Polypropylene Fibers

Du, Hong Xiu; Qin, Yi; Zhang, Wei; Zhang, Ning; Hao, Xiao Yu

doi:10.4028/www.scientific.net/amm.99-100.1233

Cited by 3 publications

(2 citation statements)

References 8 publications

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“…However, the dispersion efficiency of polypropylene fibers is decreased by the increasing dosage of polypropylene fibers. Therefore, the mechanical strengths remain unchanged after growing to a stable value [29][30][31]. Figure 5 shows the relationship between the mechanical strengths and the curing time of RPC with different dosage of PPFs.…”

Section: Mechanical Strengthsmentioning

confidence: 99%

Influence of NaCl Freeze–Thaw Cycles on the Mechanical Strength of Reactive Powder Concrete with the Assembly Unit of Sulphoaluminate Cement and Ordinary Portland Cement

Cai

Wang

2021

Coatings

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The influence of sulphoaluminate cement and the dosage of polypropylene fibers on the basic mechanical strengths (compressive and flexural strengths) of reactive powder concrete (RPC) cured for 1 d, 3 d, 7 d, 14 d and 28 d is studied in this research. The content of sulphoaluminate cement ranges from 0% to 100% and the dosages of polypropylene fibers are 0%~3.5%, respectively. Moreover, the mechanical properties (compressive and flexural strengths), the relative dynamic elastic modulus (RDEM) and the chloride permeability of specimens with 50% sulphoaluminate cement and different dosages of polypropylene fibers are determined after the specimens are exposed to different NaCl freeze–thaw cycles. The water–binder ratio in this study is 0.25, and the sand-to-binder ratio is 1.25. Results show that the relationship between the mechanical strengths of RPC at early curing ages (lower than 7 d) and the sulphoaluminate cement content is a linear function with a positive correlation. However, when the curing age reaches 14 d, the compressive and flexural strengths decrease in the form of a linear function with the addition of sulphoaluminate cement. The correlation between the mechanical strengths and polypropylene fiber volume is a positive quadratic function. However, the mass loss rate and flexural strength loss rate increased in the form of a quadratic function, and RDEM shows a negative quadratic function with the freeze–thaw cycles. Moreover, the compressive strength loss rate increases linearly with the freeze–thaw cycle. The addition of polypropylene fibers can effectively improve the freeze–thaw resistance of cement mortar with an assembly unit of ordinary cement and sulphoaluminate cement.

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Section: Mechanical Strengthsmentioning

confidence: 99%

Influence of NaCl Freeze–Thaw Cycles on the Mechanical Strength of Reactive Powder Concrete with the Assembly Unit of Sulphoaluminate Cement and Ordinary Portland Cement

Cai

Wang

2021

Coatings

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“…Polymer composites reinforced with synthetic fibers offer improved mechanical performance in engineering applications due to their strength, specific density, and light weight. Previous research has demonstrated that the addition of polypropylene fibers to composite materials can effectively control fracture and especially creep [8,9]. Among the family of this fiber, Innegra fiber is one of the newest fibers available on the market, which is made of high modulus polypropylene, which can be used independently or together with other fibers to reduce weight resist damage and improve strength.…”

Section: Introductionmentioning

confidence: 99%

Buckling behavior of fiber reinforced Innegra sandwich beams incorporating carbon nanofiber

Hosseini¹,

Tooski²,

Khorshidvand³

et al. 2023

Funct. Compos. Struct.

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This study examined the effect of carbon nanofiber(CNF) on the buckling behavior of sandwich beams under axial compressive load(ACL). Three different configurations of sandwich beams consisting of composite skins with different arrangement of layers and PVC foam core were considered. Each composite skin is made of 4 layers reinforced with different materials consisting of Innegra, carbon and Innegra/carbon (Hybrid) and epoxy resin modified by CNF. Because of the difference in the thickness of the samples, the specific critical load parameter (the ratio of the critical buckling load to the thickness of the structure) was used to compare the buckling behavior of sandwich beams. The experimental test results indicated that carbon fiber as a stiffening interface in hybrid samples improved the specific critical load compared to Innegra samples. Also, the addition of 0.3wt%-CNF increases the specific critical load, while the further increase of CNF led to the decrease of the specific critical loads. which is the main cause of weak interfacial stress between CNF and epoxy resin. In addition, the effect of different percentages of CNF and types of fibers on the increase in toughness and damage mechanisms were investigated.

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Influence of a hybrid combination of steel and polypropylene fibers on concrete toughness

Guo

Jiang

Tao

et al. 2021

Construction and Building Materials

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Mechanics Performance of High-Performance Concrete with Polypropylene Fibers

Cited by 3 publications

References 8 publications

Influence of NaCl Freeze–Thaw Cycles on the Mechanical Strength of Reactive Powder Concrete with the Assembly Unit of Sulphoaluminate Cement and Ordinary Portland Cement

Influence of NaCl Freeze–Thaw Cycles on the Mechanical Strength of Reactive Powder Concrete with the Assembly Unit of Sulphoaluminate Cement and Ordinary Portland Cement

Buckling behavior of fiber reinforced Innegra sandwich beams incorporating carbon nanofiber

Influence of a hybrid combination of steel and polypropylene fibers on concrete toughness

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