Mechanical properties of oil well cement stone reinforced with hybrid fiber of calcium carbonate whisker and carbon fiber

Li, Ming; Li, Meng; Yang, Yuanyi; Li, Zaoyuan; Guo, Xiaolu

doi:10.1016/s1876-3804(15)60012-x

Cited by 62 publications

(21 citation statements)

References 19 publications

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“…But compared with pure cement paste, the matrix interface and structure level of mortar is more complex and the application scope is more extensive. The mechanical and microstructure of cementitious composites are influence size, type, content and distribution of reinforcing additives [9,[20][21][22][23] as well as interfacial bond between matrix and reinforcing material [10,[24][25][26]. Therefore, the effect of CaCO 3 whisker on microstructural and mechanical properties of cement mortar is also necessary to study which will provide a good foundation for the research and application of whisker in cementitious composites.…”

Section: Research Significancementioning

confidence: 99%

Effectiveness of Calcium Carbonate Whisker in Cementitious Composites

Cao

Khan

Ahmed

2020

Period. Polytech. Civil Eng.

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Cementitious composites are porous material having complex structure system consist of hydration products, un-hydrated cement particles and pore solutions of various scales. Calcium carbonate whisker is a new type of low cost micro-scale filler fiber gaining popularity in the field of construction materials. However, addition of whisker has effect on physical, mechanical and microstructural characteristics of cementitious composites. Also, the low production cost of whisker will make the use of micro fiber more extensive in large scale construction projects. In this study, the effect of calcium carbonate whisker on physical, mechanical and microstructural properties of cementitious composites with different fiber contents are investigated. The fluidity, drying shrinkage, pore structure, impact resistance, compressive, flexural and splitting-tensile strength of whisker-mortar are considered. The scanning electron microscopy analysis is also performed to examine the microstructural and toughening mechanism of whisker reinforced composites.It was concluded that the addition of calcium carbonate whisker up to 10 % improves the physical and mechanical properties of cementitious composites and is suggested to be the optimize content. The calcium carbonate whisker also resists the crack propagation at micro scale and showed the toughening mechanism with better interfacial properties between whisker and matrix.

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Section: Research Significancementioning

confidence: 99%

Effectiveness of Calcium Carbonate Whisker in Cementitious Composites

Cao

Khan

Ahmed

2020

Period. Polytech. Civil Eng.

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“…The constitutive model of stress-strain curve of the CaCO 3 whisker reinforced cement paste could be described by (5) and (9) as where 1 and 0 were undecided parameters and the range of 1 and 0 of the CaCO 3 whisker reinforced cement paste was elaborated as 0.5 < 1 ≤ 1.5, 5 < 0 < 500 in this script.…”

Section: Advances In Materialsmentioning

confidence: 99%

“…Simultaneously, with the perfect performance of high strength, high elasticity modulus, excellent heat-resisting, and heat insulation, the calcium carbonate whisker as a kind of desired filling material could fit the requests of the cementing and geological engineering in petroleum industry well [1,4]. Li et al [5,6] have explored the workability of the cement slurry and the mechanical performance and the microstructure of the oil well cement pastes with hybrid fibers of calcium carbonate whisker and carbon fiber. The strengthening mechanism with hybrid fibers is elaborated as hybrid reinforcement.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Attributes of Uniaxial Compression for Calcium Carbonate Whisker Reinforced Oil Well Cement Pastes

Yang

Shun

2017

Advances in Materials Science and Engineering

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It is crucial for design and safety of the cementing sheath to develop better understanding of the CaCO 3 whisker reinforced oil well cement pastes. The uniaxial compression curve, mechanical constitutive relation, and reinforcing mechanism of the CaCO 3 whisker reinforced oil well cement pastes are studied in this script. The results indicate that the CaCO 3 whisker under the 10% dosage could improve the tensile strength of the cement paste significantly. The peak stress, elasticity modulus, and the energy at different stages of the stress-strain curve of the CaCO 3 whisker reinforced cement paste are reinforced with the increasing of CaCO 3 whisker. Afterward, the constitutive model of stress-strain curve, the toughness index, and capability coefficients index of the CaCO 3 whisker reinforced cement paste are established. A physical model of the interface layer is also established and the micromechanical reinforcement is related to the double film layer between the CaCO 3 whisker and cement matrix which could be bonded with much more fastness to the cement surface. The development of this script provides new ways to analyze the toughening mechanism of CaCO 3 whisker and establishes a correlation between basic material structure and the physical properties.

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“…Yang et al reported that CaCO 3 whisker with the addition of 10% could remarkably enhance the tensile strength of cement paste, and the constitutive relationship of the stress-strain curve of CaCO 3 whisker-reinforced cement pastes and toughening mechanism of CaCO 3 whisker were illustrated as well [12]. On the other hand, the microsize of CaCO 3 whisker enables the combined use of it with various large-sized fibers in order to achieve the multiscale cracking resistance of cementitious materials [17][18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Effect of Calcium Carbonate Whisker and Fly Ash on Mechanical Properties of Cement Mortar under High Temperatures

Wang

Zhang

Zhao

et al. 2019

Advances in Materials Science and Engineering

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Calcium carbonate (CaCO3) whisker, as a new type of microfibrous material, has been extensively used in the reinforcement of cementitious materials. However, the combined effect of CaCO3 whisker and fly ash on mechanical properties of cementitious materials under high temperatures was still unknown. In this study, the coupling effect of CaCO3 whisker, and fly ash on mechanical properties of the cement was investigated. Two sets of cement mortars were fabricated, including CaCO3 whisker-based mortar which contained 0 wt.%, 5 wt.%, 10 wt.%, 15 wt.%, and 20 wt.% CaCO3 whisker as cement substitution and CaCO3 whisker-based fly ash mortar which contained 30 wt.% fly ash in addition to 0 wt.%, 5 wt.%, 10 wt.%, 15 wt.%, and 20 wt.% CaCO3 whisker as cement substitution. Mass loss, compressive strength, and flexural strength of these two sets of specimens before and after being subjected to high temperatures of 200°C, 400°C, 600°C, 800°C, and 1000°C were measured. Based on the results of the aforementioned tests, load-deflection test was performed on the specimen which exhibited the superior performance to further study its mechanical behavior after exposure to high temperatures. Moreover, microstructural analysis, such as mercury intrusion porosimetry (MIP) and scanning electron microscopy (SEM), was conducted to reveal the damage mechanism of high temperature and to illustrate the combined effect of CaCO3 whisker and fly ash on high-temperature resistance of the cement. Results showed that fly ash could improve the high-temperature performance of CaCO3 whisker-based mortar before 600°C and limit the loss of strength after 600°C.

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Mechanical properties of oil well cement stone reinforced with hybrid fiber of calcium carbonate whisker and carbon fiber

Cited by 62 publications

References 19 publications

Effectiveness of Calcium Carbonate Whisker in Cementitious Composites

Effectiveness of Calcium Carbonate Whisker in Cementitious Composites

Mechanical Attributes of Uniaxial Compression for Calcium Carbonate Whisker Reinforced Oil Well Cement Pastes

Effect of Calcium Carbonate Whisker and Fly Ash on Mechanical Properties of Cement Mortar under High Temperatures

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