Investigation on the Triaxial Mechanical Characteristics of Cement-Treated Subgrade Soil Admixed with Polypropylene Fiber

Wang, Wei; Zhang, Chen; Guo, Jia; Li, Na; Li, Yuan; Zhou, Hang; Liu, Yong

doi:10.3390/app9214557

Cited by 18 publications

(25 citation statements)

References 31 publications

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“…The test results of this paper are similar to those of Wang [6] and Orakoglu [13], both of which show that the fiber has a better improvement effect on cement clay, both in terms of unconfined compressive strength and tensile properties. This paper emphasizes the time effect and freeze-thaw effect of fiber on the modification effect of cement clay.…”

Section: Discussionsupporting

confidence: 79%

“…Cement and lime are generally adopted to promote various kinds of soil solidification, such as dredged clay [1], seashore soft clay [2], loess [3,4], coastal clay [5], subgrade clay [6] and marine clay [7]. Due to the advantages of low cost and construction feasibility, cementtreated clay is widely used in ground improvement, pavement engineering and other engineering applications [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

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Unconfined Compressive Properties of Fiber-Stabilized Coastal Cement Clay Subjected to Freeze–Thaw Cycles

Zhu

Zhang

et al. 2021

JMSE

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This study aimed to investigate the feasibility of using polypropylene fiber-cement-stabilized coastal clay as base-course material or foundation material for city sustainable development by assessing its mechanical performance. The influence of the number of freeze–thaw cycles and curing ages on the mechanical properties of ordinary cemented clay (OCC) and polypropylene fiber-cemented clay (PCC) was investigated by using unconfined compressive test. The experimental results show that the addition of fiber with 1% content can increase the strength as well as the ductility of cemented clay by 12.5% and 15.6%, respectively. The strength of PCC and OCC at 22d age was 1.5 times than at 7d age. Under differently timed freeze–thaw cycles, the mechanical performance of PCC is improved, and, better than that, OCC improves by 11.8% in strength, 16.5% in strain and by 5% in degree of damage, indicating that fiber can improve the freeze–thaw resistance of cemented clay. The frost resistance of PCC and OCC increases with the increase in curing age. Finally, the variation of strength of OCC was explained through the change of micro-structure while the strength enhancing mechanism of polypropylene fiber for cemented clay was also revealed.

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Section: Discussionsupporting

confidence: 79%

Section: Introductionmentioning

confidence: 99%

Unconfined Compressive Properties of Fiber-Stabilized Coastal Cement Clay Subjected to Freeze–Thaw Cycles

Zhu

Zhang

et al. 2021

JMSE

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“… Synthetic polymer fibers used in CBMs. ( a ) Polypropylene [ 135 ], ( b ) Polyvinyl alcohol [ 136 ], ( c ) Polyethylene terephthalate [ 137 ], ( d ) Nylon [ 138 ], ( e ) Polyester [ 139 ], ( f ) Aramid [ 140 ]. …”

Section: Figurementioning

confidence: 99%

Effect of Short Fiber Reinforcements on Fracture Performance of Cement-Based Materials: A Systematic Review Approach

2021

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Fracture characteristics were used to effectively evaluate the performance of fiber-reinforced cementitious composites. The fracture parameters provided the basis for crack stability analysis, service performance, safety evaluation, and protection. Much research has been carried out in the proposed study field over the previous two decades. Therefore, it was required to analyze the research trend from the available bibliometric data. In this study, the scientometric analysis and science mapping techniques were performed along with a comprehensive discussion to identify the relevant publication field, highly used keywords, most active authors, most cited articles, and regions with largest impact on the field of fracture properties of cement-based materials (CBMs). Furthermore, the characteristic of various fibers such as steel, polymeric, inorganic, and carbon fibers are discussed, and the factors affecting the fracture properties of fiber-reinforced CBMs (FRCBMs) are reviewed. In addition, future gaps are identified. The graphical representation based on the scientometric review could be helpful for research scholars from different countries in developing research cooperation, creating joint ventures, and exchanging innovative technologies and ideas.

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“…For predicting G max in CGMs with different gravel contents, gravel shapes, and confining pressures, a predicting equation was put forward, as shown in Equation (4).…”

Section: Maximum Dynamic Shear Modulusmentioning

confidence: 99%

“…Clay-gravel mixtures (CGMs) constitute a great engineering material, which is widely utilized in subgrade engineering, rock-fill dams, and sea filling [1][2][3][4]. A CGM is a heterogeneous two-phase material, consisting of low-strength clay and high-strength and large-sized gravels.…”

Section: Introductionmentioning

confidence: 99%

Characterization of the Dynamic Properties of Clay–Gravel Mixtures at Low Strain Level

et al. 2020

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In order to support the dynamic design of subgrade filling engineering, an experiment on the dynamic shear modulus (G) and damping ratio (D) of clay-gravel mixtures (CGMs) was carried out. Forty-two groups of resonant column tests were conducted to explore the effects of gravel content (0%, 10%, 20%, 30%, 40%, 50%, and 60%, which was the mass ratio of gravel to clay), gravel shape (round and angular gravels), and confining pressure (100, 200, and 300 kPa) on the dynamic shear modulus, and damping ratio of CGMs under the same compacting power. The test results showed that, with the increase of gravel content, the maximum dynamic shear modulus of CGMs increases, the referent shear strain increases linearly, and the minimum and maximum damping ratios decrease gradually. In CGMs with round gravels, the maximum dynamic shear modulus and the maximum damping ratio are greater, and the referent shear strain and the minimum damping ratio are smaller, compared to those with angular gravels. With the increase of confining pressure, the maximum dynamic shear modulus and the referent shear strain increase nonlinearly, while the minimum and maximum damping ratios decrease nonlinearly. The predicting equation for the dynamic shear modulus and the damping ratio of CGMs when considering confining pressure, gravel content, and shape was established. The results of this research may put forward a solid foundation for engineering design considering low-strain-level mechanical performance.

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Investigation on the Triaxial Mechanical Characteristics of Cement-Treated Subgrade Soil Admixed with Polypropylene Fiber

Cited by 18 publications

References 31 publications

Unconfined Compressive Properties of Fiber-Stabilized Coastal Cement Clay Subjected to Freeze–Thaw Cycles

Unconfined Compressive Properties of Fiber-Stabilized Coastal Cement Clay Subjected to Freeze–Thaw Cycles

Effect of Short Fiber Reinforcements on Fracture Performance of Cement-Based Materials: A Systematic Review Approach

Characterization of the Dynamic Properties of Clay–Gravel Mixtures at Low Strain Level

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