Abrasion Resistance of Cement-Based Composites

Lin, Wei‐Ting; Cheng, An

doi:10.5772/34798

Cited by 7 publications

(4 citation statements)

References 32 publications

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“…Lin & Cheng [10] studied the performance of inclusion of steel fibers and silica fume in the concrete composite and found that abrasion resistance of concrete is improved by 8-15%. Hu & Yin [11] studied the impact angle of abrasion and found that steel fibers improves erosion resistance at low impact angle (ø=15 degree).…”

Section: Introductionmentioning

confidence: 99%

High performance fiber reinforced concrete – for repair in spillways of concrete dams

Ojha¹,

Materials²,

Trivedi³

et al. 2021

Res. Eng. Struct. Mater.

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Hydraulic structures like spillways, glacis, etc. undergoes abrasion-erosion due to impact & cavitation losses due to the flowing water action. To overcome the deterioration of the concrete in such structures, addition of fibers to the concrete can be viable solution as it is known to increase the structural integrity of the concrete. A comparative study of various engineering characteristics using high strength concrete by incorporating steel fibers and micro polypropylene fibers has been carried out. Water/binder ratio of 0.23 has been kept constant for the study. Dosage for steel fibers are kept as 1, 1.25 and 1.5% by volume while for polypropylene fibers were kept as 1, 2 & 3 kg/m3. Engineering properties such compressive strength, flexural strength, toughness, energy absorption, splitting tensile strength, drying shrinkage, abrasion resistance, and water and air permeability of high performance concrete with & without fibers in its fresh & hardened state are investigated in this paper. Based on the study, the steel fibers with 1.5% dosage are found to be more effective in countering the abrasive and repetitive loading which can be more effective in the repairs of spillways and glacis of concrete dams.

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Section: Introductionmentioning

confidence: 99%

High performance fiber reinforced concrete – for repair in spillways of concrete dams

Ojha¹,

Materials²,

Trivedi³

et al. 2021

Res. Eng. Struct. Mater.

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“…It may be the dispersion of high concentration IF-WS 2 in lubricating oil decreases. IF-WS 2 additive has a large amount of agglomeration and deposition, which results in poor wear [44][45][46]. The error bar in the figure shows that the repeatability of the experiment is high, and the error is less than 3%.…”

Section: Analysis Of Friction and Wear Testmentioning

confidence: 95%

Design and Evaluation the Anti-Wear Property of Inorganic Fullerene Tungsten Disulfide as Additive in PAO6 Oil

et al. 2021

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Inorganic fullerene-like tungsten disulfide particles have been proved to have good anti-friction and anti-wear properties as lubricating materials. As far as we know, however, when it is used as a lubricant additive, its behavior and action mechanism in the friction process are rarely studied. Herein, IF–WS2 particles were synthesized by a Chemical Vapor Deposition (CVD) method. The effect of IF–WS2 particle concentrations in the PAO6 oil on the tribological behaviors was investigated with a four-ball wear machine at both 75 and 100 °C. Additionally, the analyzed morphology and composition of nanomaterials and worn surfaces were analyzed by Scanning electron microscopy (SEM), Transmission Electron Microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). The friction behavior in actual working conditions was studied by a wear testing machine. The experimental results show that compared with the original PAO6 oil, at a dispersion of 0.25 wt% in PAO6 oil, the IF–WS2 particles showed the best performance in terms of coefficient of friction, wear scar diameter and wear mass, which significantly reduced by 27%, 43% and 87%, respectively. At the same time, in the process of friction, it was found that IF–WS2 particles accumulated in the depressions to fill the scratches, and adsorption films and chemical films, including FeS2, WS2 and WO3, were formed on the worn surfaces to avoid the direct contact among the friction pairs more effectively, resulting in the improved anti-wear performances. Additionally, the addition of IF–WS2 particles effectively delayed the rise of lubricating oil temperature. In addition, dispersant span 80 can effectively improve the dispersion and stability of IF–WS2 in PAO6. This work provides us for understanding the effective lubrication mechanism of IF–WS2 particles in more detail and having a new acknowledge of the comprehensive performance of IF–WS2/PAO6 oil.

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“…Silica fume with a specific gravity of 2.20 and a surface area of 22500 m 2 /kg was used. A diameter of silica fume particle was about 0.10 µm to 0.20 µm according to previous study [17]. Cement was partially replaced with 5 % silica fume.…”

Section: Materials and MIX Proportionmentioning

confidence: 99%

Abrasion Properties of Steel Fiber Reinforced Silica Fume Concrete According to Los Angeles and Water Abrasion Tests

Cheng

Huang

et al. 2014

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The current study mainly investigated the influence of different tests on the abrasion resistance of concrete mixed with steel fibers and silica fume. The abrasion resistance was assessed at 28, 56 and 91 days on concretes with water-binder ratios of 0.35 and 0.55 where in some mixes silica fume was substituted by 5 % of cement by weight. Steel fibers of 0.5 % and 1.0 % of concrete volume were also added into the test concrete by replacement of coarse and fine aggregates. The results showed that concrete with higher compressive strength in Los Angeles abrasion tests also had better abrasion resistance. The inclusion of steel fibers into test concrete with a water-binder ratio of 0.35 resulted in a significant increase in compressive strength. This concrete also displayed better abrasion resistance and splitting tensile strength than reference concrete; in the test sample with a water-binder ratio of 0.55, the added steel fibers was unable to effectively produce cementation with the concrete. The inclusion of silica fume improved the abrasion resistance of concretes. In water abrasion testing, the abrasion resistance of concrete containing steel fiber was worse than that of concrete without steel fibers. In the water abrasion testing, the surface of steel fiber reinforced concrete was eroded by water and steel balls, and the impact caused the steel fibers to separate from the concrete and led to higher wear loss.

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Abrasion Resistance of Cement-Based Composites

Cited by 7 publications

References 32 publications

High performance fiber reinforced concrete – for repair in spillways of concrete dams

High performance fiber reinforced concrete – for repair in spillways of concrete dams

Design and Evaluation the Anti-Wear Property of Inorganic Fullerene Tungsten Disulfide as Additive in PAO6 Oil

Abrasion Properties of Steel Fiber Reinforced Silica Fume Concrete According to Los Angeles and Water Abrasion Tests

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