Laboratory evaluation on the effectiveness of polypropylene fibers on the strength of fiber-reinforced and cement-stabilized Shanghai soft clay

Mu, Chunlai; Shen, Shui‐Long; Arulrajah, Arul; Wu, Huai-Na; Hou, Dongwei

doi:10.1016/j.geotexmem.2015.05.004

Cited by 162 publications

(58 citation statements)

References 43 publications

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“…Attempts have been made to assess under laboratory conditions the performance of e.g. clay stabilised with cement and reinforced with polypropylene fibres [4]. However, those tests only concerned the effect of variation in the length of polypropylene fibres and their share in the soilcement matrix on its compressive strength.…”

Section: Literature Studymentioning

confidence: 99%

The Effectiveness of Dispersed Reinforcement of Soil-Cements

Brasse¹,

Tracz²,

Zdeb³

2019

World Congress on Civil, Structural, and Environmental Engineering

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The paper deals with mechanical properties of soil-cement composites made with cohesive soil and reinforced by dispersed reinforcement. The research was carried out on the basis of three soil-cement matrices whose compositions varied in terms of the volumetric fraction of cement paste and the water-cement ratio. A single type of polypropylene fibres was used as dispersed reinforcement: bundles consisting of fibrillated PP tapes. In addition, the fibres varied in terms of their length and mass fraction. The aim of the research was to demonstrate the effectiveness of the fibres tested in soil-cement matrix reinforcement. For this reason, a threepoint bending test was conducted after 28 days of curing, including the determination of the following values: residual stress σCMODi, the limit of proportionality LOP, the modulus of rapture MOR, the total energy of fracture Gtot as well as compressive strength. The test results obtained and their analysis indicate the significant impact of the reinforcement used on the mechanical properties of fibrereinforced soil-cements.

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Section: Literature Studymentioning

confidence: 99%

The Effectiveness of Dispersed Reinforcement of Soil-Cements

Brasse¹,

Tracz²,

Zdeb³

2019

World Congress on Civil, Structural, and Environmental Engineering

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“…Recently, many researchers concentrated on the soil stabilization with cement and fiber mixtures. In practical engineering, the polypropylene fiberreinforced cement soil has been widely used in dams, subgrades, highways, buildings, and other engineering constructions [1][2][3][4]. In recent years, several investigators have performed a series of research for soil stabilization with polypropylene fiber inclusion and obtained so many useful achievements.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Mechanical Properties and Fractal Characteristics of Polypropylene Fiber-Reinforced Cement Soil under Impact Loading

Pang

Huang

2019

Advances in Materials Science and Engineering

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This paper aims to study the dynamic mechanical properties, failure patterns, fractal behaviors, and energy dissipation of polypropylene fiber-reinforced cement soil under impact loading. Dynamic compression tests for reinforced cement soil with different polypropylene fiber contents of 0%, 0.4%, 0.8%, and 1.2% were conducted using a 50 mm diameter split Hopkinson pressure bar (SHPB) device. The static and dynamic stress-strain curves, dynamic strength increase factor (DIF), fractal behaviors, and energy dissipation properties of polypropylene fiber-reinforced cement soil were investigated and analyzed. The experimental results indicated that the dynamic strength increase factor (DIF) of cement soil increases firstly and then decreases with the increase of polypropylene fiber content from 0% to 1.2%. The maximum dynamic compressive strength of cement soil was obtained with adding 0.8% polypropylene fiber. With the increase of polypropylene fiber content, the average particle size of cement soil fragments has an increasing trend, whereas the fractal dimension presents a decreasing trend. Besides, the fragmentation degree of cement soil decreases correspondingly with the increase of polypropylene fiber content. The fractal dimension value has a linear relationship with the polypropylene fiber content and a decreasing exponential relationship with the average particle size. The absorbed energy per unit volume of cement soil presents an increasing trend firstly and a decreasing trend subsequently as the polypropylene fiber content increases from 0% to 1.2%. When the fractal dimension of cement soil is kept in the range of 2.04 to 2.15, the absorbed energy per unit volume of cement soil increases first and then decreases. The absorbed energy per unit volume of cement soil has a quadratic parabola relationship with polypropylene fiber content and fractal dimension, respectively. At last, the relationship of the absorbed energy per unit volume, fractal dimension, and polypropylene fiber content can be established, which can be used in the studies of dynamic behaviors and fractal properties of the fiber-reinforced cement soil under impact loading.

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“…Consoli et al [20] investigated stress-dilatancy behavior of cemented sand reinforced with randomly discrete polypropylene fibers and found that fiber reinforcement increases peak strength just up to a certain cement content and decreases stiffness. Chen et al [21] reinforced cement-stabilized soft Shanghai clay using fiber bundles split from waste polymer textile bags and depict-…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis of the Response of Pile-Raft Systems Considering the Application of Cement and Polypropylene Fiber Treatment

Hasanzadeh

2019

Architecture, Civil Engineering, Environment

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Long-term performance of civil engineering projects mainly depends on the strength of underground layers. When the underground soil layers are problematic or have low bearing capacity and strength against the applied loads, application of soil stabilization methods can be effective. In this study, performance of pile-raft systems using stabilized/reinforced soil under foundation is investigated. For validation, the obtained numerical results were compared with the existing results from analytical and numerical analyses. Using the experimental data available in the literature, the variations of stiffness and strength parameters were simulated by three-dimensional finite element method and then foundation response was evaluated for each case. According to the obtained results, depending on the pile-raft configuration, different strategies of stabilization with cement, reinforcement with polypropylene fibers, or a combination of cement stabilization and fiber reinforcement can be employed to reduce the differential and maximum settlements of foundation and to improve the overall performance. In general, even though reinforcement with fibers has a positive influence on the tensile and shear strength of soil, the effect of cement stabilization on the design parameters of the foundation is more pronounced. Finally, an implementation of cost analysis of stabilization project was proposed to be conducted based on the applied materials and improvement/cost ratio.

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Laboratory evaluation on the effectiveness of polypropylene fibers on the strength of fiber-reinforced and cement-stabilized Shanghai soft clay

Cited by 162 publications

References 43 publications

The Effectiveness of Dispersed Reinforcement of Soil-Cements

The Effectiveness of Dispersed Reinforcement of Soil-Cements

Dynamic Mechanical Properties and Fractal Characteristics of Polypropylene Fiber-Reinforced Cement Soil under Impact Loading

Numerical Analysis of the Response of Pile-Raft Systems Considering the Application of Cement and Polypropylene Fiber Treatment

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