Drained Shear Strength of Over-Consolidated Compacted Soil-Cement

Askarani, Kayvan Karimi; Pakbaz, Mohammad Siroos

doi:10.1061/(asce)mt.1943-5533.0001510

Cited by 18 publications

(12 citation statements)

References 19 publications

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“…The stabilization process can be divided into three primary groups: traditional stabilizers (hydrated lime, Portland cement, and fly ash), byproduct stabilizers (cement kiln dust, lime kiln dust, and other forms of byproduct lime), and nontraditional stabilizers (sulfonated oils, potassium compounds, ammonium chloride, enzymes, and polymers) [6]. Of all these stabilizers, cement is widely used to improve the soil's strength properties [7][8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Influence of Dispersed Reinforcement on Mechanical Properties of Stabilized Soil

2021

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Stabilized soils are commonly used as part of pavement construction in highway engineering. The everyday use of this material makes it necessary to classify it. One of the basic methods of determining the mechanical properties of a material is the Unconfined Compressive Strength (UCS) test, from which the material elasticity can be determined. The scope of the research included the design and making of soil mixtures stabilized with polypropylene fibers modified cement. This paper presents the effect of the amount of dispersed reinforcement on the maximum compressive strength, the secant modulus at half the ultimate stress (), the secant modulus at the ultimate stress (), and the tangent modulus (). The materials chapter characterizes the soil, cement, and dispersed reinforcement used. The test methods section describes the tests performed and the procedure for interpreting the results. The results section describes the relationship between elastic modulus and compressive strength. The discussion section compares the obtained results with the works of other authors. The work is concluded with a summary containing the most important conclusions resulting from the work.

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Section: Introductionmentioning

confidence: 99%

Influence of Dispersed Reinforcement on Mechanical Properties of Stabilized Soil

2021

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“…Mixing of the soil with cement, initially destroys the natural bonds between the clay matrices, meanwhile new bonds are created due to the chemical reaction of the soil particles with cement. The primary factors that govern the behaviour of cemented-soil are identified as the nature of the soil, cement content, efficiency of mixing, compacting water content, dry density and the curing period of the compacted mix [23]. Some other factors like the curing temperature, humidity and stresses during the treatment period, also affect the development of strength in cement mixed soil.…”

Section: Introductionmentioning

confidence: 99%

Effect of Polypropylene Fibre and Curing Period on Unconfined Compressive Strength of Cemented Black Cotton Soil

Gupta*,

Jain,

Kumar

2019

IJEAT

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This paper discussed the effect of polypropylene fibre and curing period on the unconfined compressive strength (UCS) of cemented-black cotton soil. Various combinations of polypropylene fibres and cement have been taken and the UCS values of the treated black cotton soil specimens were determined after 3, 7 and 28days of curing. The study divulged that the mixing of polypropylene fibre increases UCS of cemented-black cotton soil. The rise in strength depends on the curing period. The 28days strength is 50 to 90% more than the corresponding 3days strength. The maximum enhancement of UCS from 969 to 2431kPa is achieved by adding 1% polypropylene fibre in cemented-black cotton soil having 15% cement after a curing period of 28days. The UCS of cemented-soil with 5% cement content, (Cc) and 1% polypropylene fibre is 781kPa which corresponds to the UCS of cemented-black cotton soil with 12% cement alone after a curing period of 28days. Thus, polypropylene fibre might be an economical admixture to enhance the performance of soil-cement column stabilised black cotton soil.

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“…At the beginning, mixing the clay with cement destroy the natural clay cementation between the clay particles and replace that with cement admixed clay. Many investigations have been done to understand the behaviour of cement admixed clay under different variables such as water content, cement ratio, and curing time [6][7][8][9][10][11][12][13][14][15][16][17][18]. It was revealed that the strength and deformation characterizations are manly depending on the fabric (clay cluster) and the cementation, while the main role for cementation is to weld the clay particles together after destroying the natural cementation.…”

Section: Introductionmentioning

confidence: 99%

Unconfined Compressive Strength of Compacted Disturbed Cement-Stabilized Soft Clay

Ayeldeen

Hara

Kobayashi

et al. 2016

Int. J. of Geosynth. and Ground Eng.

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Pneumatic flow mixing method is a new land reclamation method, developed in Japan to meet the persistent lack of space. In this method dredged soft soil is mixed with a small amount of stabilizing material (such as cement) during transporting the soft soil in a pipe using compressed air to be used for land reclamation. In some cases, the soil/cement mixture is stored in temporary place for days and then transported and compacted at the required place. Basically, the cement chemical reaction starts immediately after the mixing with the soft soil and the mixture starts to gain its strength, therefore disturbing the mixture after days from the mixing influences the mixture strength. However, the soil/cement mixture is still able to gain extra strength after disturbance, transportation, and compaction. This study aims to evaluate the effect of dynamic compaction on the shear strength of disturbed cemented soft soil mixture experimentally. The mixture was fully disturbed after one week from mixing with cement. Three cement/soil ratios were used in this study under different dynamic compaction energies. Unconfined compression test was conducted at various curing times for both disturbed and non-disturbed specimens. Keywords Pneumatic flow mixing Á Stabilized soft clay Á Compaction Á Unconfined compressive strength Á Soil disturbance List of Symbols aw Cement ratio E 50 Modulus of deformation t Curing time q un Unconfined compressive strength q un_Non Unconfined compressive strength for nondisturbed cemented clay q un_Non_t Unconfined compressive strength for nondisturbed cemented clay at curing time t q un_D Unconfined compressive strength for disturbed cemented clay q un_D_T Unconfined compressive strength for disturbed cemented clay without compaction q un_D_T_t Unconfined compressive strength for disturbed cemented clay without compaction at curing time t q un_D_comp Unconfined compressive strength for compacted disturbed cemented clay q un_D_comp_t Unconfined compressive strength for compacted disturbed cemented clay at curing time i Increasing factor (i = q un_D_comp_t / q un_D_T_28) G s Average specific gravity for the specimen c w Water unit weight c t Total unit weight after curing c d Dry unit weight after curing e Void ratio after curing time R 2 Coefficient of determination

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Drained Shear Strength of Over-Consolidated Compacted Soil-Cement

Cited by 18 publications

References 19 publications

Influence of Dispersed Reinforcement on Mechanical Properties of Stabilized Soil

Influence of Dispersed Reinforcement on Mechanical Properties of Stabilized Soil

Effect of Polypropylene Fibre and Curing Period on Unconfined Compressive Strength of Cemented Black Cotton Soil

Unconfined Compressive Strength of Compacted Disturbed Cement-Stabilized Soft Clay

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