Effect of steel and polypropylene fibers on the quasi-static and dynamic splitting tensile properties of high-strength concrete

Guo, Hui; Tao, Junlin; Chen, Yu; Li, Dan; Jia, Baohua; Zhai, Yue

doi:10.1016/j.conbuildmat.2019.07.096

Cited by 58 publications

(18 citation statements)

References 35 publications

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“…Many such materials provide high compressive strength (30 MPa to 60 MPa), as well as excellent mechanical properties and durability [15][16][17][18]. The inclusion of polypropylene fibers in composites has been shown to enhance the tensile strength and volume stability of non-cement blended materials [19][20][21]. In recent years, a number of researchers have studied the use of polypropylene fibers or non-cement blended materials; however, there has been little work on the addition of polypropylene fibers to non-cement blended materials.…”

Section: Introductionmentioning

confidence: 99%

Composite Properties of Non-Cement Blended Fiber Composites without Alkali Activator

Lin

Korniejenko

et al. 2020

Materials

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The vigorous promotion of reuse and recycling activities in Taiwan has solved a number of problems associated with the treatment of industrial waste. Considerable advances have been made in the conversion of waste materials into usable resources, thereby reducing the space required for waste storage and helping to conserve natural resources. This study examined the use of non-alkali activators to create bonded materials. Our aims were to evaluate the feasibility of using ground-granulated blast-furnace slag (S) and circulating fluidized bed co-fired fly ash (F) as non-cement binding materials and determine the optimal mix proportions (including embedded fibers) with the aim of achieving high dimensional stability and good mechanical properties. Under a fixed water/binder ratio of 0.55, we combined S and F to replace 100% of the cement at S:F ratios of 4:6, 5:5, 6:4. Polypropylene fibers (L/d = 375) were also included in the mix at 0.1%, 0.2% and 0.5% of the volume of all bonded materials. Samples were characterized in terms of flowability, compressive strength, tensile strength, water absorption, shrinkage, x-ray diffraction (XRD) and scanning electron microscope (SEM) analysis. Specimens made with an S:F ratio of 6:4 achieved compressive strength of roughly 30 MPa (at 28 days), which is the 80% the strength of conventional cement-based materials (control specimens). The inclusion of 0.2% fibers in the mix further increased compressive strength to 35 MPa and enhanced composite properties.

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Section: Introductionmentioning

confidence: 99%

Composite Properties of Non-Cement Blended Fiber Composites without Alkali Activator

Lin

Korniejenko

et al. 2020

Materials

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“…The increase of W/B from 0.3 to 0.45 caused a decrease in splitting tensile strength of PAC, which varied from 4.97 to 3.63 MPa for S/B = 1.5, from 4.62 to 3.34 MPa for S/B = 1.75 and from 4.38 to 3.05 MPa for S/B = 2. The reason that the reduction of splitting tensile strength of PAC with increase of W/B and S/B might be similar to that of NC has been elaborated upon by several researchers [31,32], and was said to be on account of the lower compressive strength of hardened grout mortar and smaller adhesive strength between hardened grout mortar and coarse aggregate. From Figure 7, it could be seen that plenty of coarse aggregates distributed on the splitting section and most of the coarse aggregates were split under loading.…”

Section: Splitting Tensile Strengthmentioning

confidence: 95%

Development and Investigation of a New Low-Cement-Consumption Concrete—Preplaced Aggregate Concrete

Zhou

2020

Sustainability

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Reducing consumption of cement in concrete will achieve huge benefits in decline of carbon emission, conservation of natural resources and reduction of the cost of concrete. In this paper, the low-cement-consumption concrete, preplaced aggregate concrete (PAC), is prepared and 12 types of mixtures including four water–binder ratios (W/B) and three sand–binder ratios (S/B) are designed to detect the effect of W/B and S/B on the mechanical properties and failure mechanism of PAC. Experimental and analytic results indicate that the cubic compressive strength of PAC, splitting tensile strength of PAC and elastic modulus of PAC decrease with increase in W/B and S/B. At a similar compressive strength, more than 20% increment of elastic modulus of PAC is achieved when compared with normal concrete (NC); the descent stage of stress–strain curves of PAC are steeper than that of NC and the peak strains of PAC is lower than that of NC. Guo’s model with suitable values of parameters a and b can be used to describe the stress–strain relationship of PAC. Replacing NC by PAC in concrete structures will save 15–20% cement and achieve great environmental and economic benefits.

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“…On the other hand, previous investigations demonstrated that using different types of fibres plays a positive role on the mechanical behaviour of concrete especially in terms of compressive, tensile and flexural strength [20][21][22][23][24][25][26][27][28][29][30][31][32]. Guo et al [33] evaluated the effect of PPF and SF on the static and dynamic characteristics of HSC. They found that adding SF resulted in brittle failure in the indirect tensile strength test, while the simultaneous incorporation of SF and PPF led to ductile failure.…”

Section: Research Significancementioning

confidence: 99%

Properties of Fibre-Reinforced High-Strength Concrete with Nano-Silica and Silica Fume

et al. 2021

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This study intends to assess the influence of steel fibres (SF) and polypropylene fibres (PPF) on the hardened and fresh state properties of high-strength concrete (HSC). For this purpose, 99 concrete mixes were designed and applied. SF and PPF were used at six-volume replacement contents of 0%, 0.1%, 0.2%, 0.3%, 0.4% and 0.5%. Moreover, nano-silica (NS) was used at three contents, 0%, 1% and 2%, and silica fume powder (SP) was also used at three weight ratios (0%, 5% and 10%). The slump, compressive and tensile strength, elasticity modulus, water absorption and the electric resistivity of concrete specimens were examined. The results showed that using 1% NS and 10% SP together with 0.5% PPF improved the compressive strength of HSC by about 123%; however, the effect of SF on tensile strength is more significant and adding 0.5% SF with both 2% NS and 10% SP increased the tensile strength by 104%. Moreover, increasing the SF content reduces the electric resistivity while using PPF improves this property especially when 1% NS was employed, and it was enhanced by about 68% when 0.5% SF and 1% NS were utilized with 10% SP.

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Effect of steel and polypropylene fibers on the quasi-static and dynamic splitting tensile properties of high-strength concrete

Cited by 58 publications

References 35 publications

Composite Properties of Non-Cement Blended Fiber Composites without Alkali Activator

Composite Properties of Non-Cement Blended Fiber Composites without Alkali Activator

Development and Investigation of a New Low-Cement-Consumption Concrete—Preplaced Aggregate Concrete

Properties of Fibre-Reinforced High-Strength Concrete with Nano-Silica and Silica Fume

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