Effect of RBI Grade 81 on strength characteristics of clayey subgrade

Kodicherla, Shiva Prashanth Kumar; Nandyala, Darga Kumar

doi:10.1186/s40703-017-0061-z

Cited by 12 publications

(2 citation statements)

References 2 publications

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“…Because clayey soils volume change behavior is so sensitive to moisture content, expansive soils are used difficult in engineering applications [2]. A variety of soil stabilization techniques have been used to stabilize expansive soil, including fly ash [11] RBI Grade-81 [12], Steel fiber [13], Rice husk [14], glass fiber [15][16][17][18][19][20][21][22][23][24][25][26], bagasse ash [4] [27-28], lime [27, [29][30], cement [26,31], corn straw ash [32], Polypropylene Fiber [10,18,33], Basalt Fiber [34], Coir Fiber [35], Sisal Fibre [36], Jute Fiber [37] and Plastic Waste Powder [38] etc. When the area to be treated is limited, reinforcements are especially trustworthy and successful at strengthening weak soil.…”

Section: Introductionmentioning

confidence: 99%

Assessment of Effect of Glass Fiber on the Geotechnical Properties of Black Cotton Soil

Singh

Kumar

Tiwari

2023

IOP Conf. Ser.: Mater. Sci. Eng.

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Black cotton soil (BCS) has now been declared as one of the poorest soil among all soils regarding civil engineering construction projects due to presence of its inherent clay mineral i.e. montmorillonite, which introduces undesirable shrinkage and swelling in the BCS. BCS should not be used directly in civil engineering projects because of its excessive volume change behavior. The sample of black cotton soil for the study has been collected from district Narsinghpur near the Bikrampur railway station, Madhya Pradesh, India. Evaluation of effect of glass fiber addition on the strength properties of BCS is described in this research article. Glass fiber acquires good properties such as stiffness, high strength, resistance and flexibility to chemical loss. Glass fiber has been mixed with oven dried BCS from 2% to 8% by its weight. Geotechnical properties are thoroughly investigated before and after treating the BCS sample by means of various laboratory tests. For both treated and untreated BCS samples, UCS testing was performed with varying curing time of 0, 4, 7, 14, 28 and 56 days. UCS value was found to be decreased due to water holding capacity of glass fiber. The laboratory findings indicate that for all additives, MDD and expansion ratio of the BCS decreases, whereas OMC and CBR value increases. XRD (X-ray diffraction) analysis has been conducted on untreated and glass fiber treated BCS samples to estimate change in microstructure and mineralogical composition.

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Section: Introductionmentioning

confidence: 99%

Assessment of Effect of Glass Fiber on the Geotechnical Properties of Black Cotton Soil

Singh

Kumar

Tiwari

2023

IOP Conf. Ser.: Mater. Sci. Eng.

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“…Studies suggest that road construction built over clayey subgrade soils may experience lower bearing capacity, which may result in the failure of the highway pavements. Worldwide, the expansive clay soils are characterized as challenging and cause various challenges for engineers working on construction projects [9]. To avoid such problems, most studies have shown the use of soil stabilization techniques to improve the durability and serviceability of pavement structures.…”

Section: Introductionmentioning

confidence: 99%

Effect of Axle Overloading on Pavement Structural Behaviour with Improved Clayey Subgrade Using PET Fibres

Banerji¹,

Topdar²,

Datta³

2022

cea

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Clayey subgrade soils are considered to have a lower bearing capacity, which may develop early pavement failure due to diverse axle loading. To avoid such failure issues, these soils must be treated prior to the beginning of the construction work. In the recent past, soil stabilization with plastic waste has become popular to reduce waste and improve soil behaviour. The current study aimed to use polyethylene terephthalate (PET) waste bottles to improve clayey subgrade soil for pavement construction. The PET fibre content varied between 1% and 5% by weight of the dry soil to investigate its influence on compaction, California bearing ratio (CBR), unconfined compressive strength (UCS), and tri-axial shear strength. The modified soil matrix with PET was further stabilized using Terrasil (0.1%) in order to improve the strength properties of the treated soil with ageing. Overall, the influence of the addition of the PET fibre on the structural behaviour of flexible pavement under diverse axle loading conditions was evaluated using Finite Element (FE) techniques. The pavement model is computationally implemented in ANSYS to study pavement structural behaviour in terms of surface deflection, vertical stress and strain on the subgrade layer, maximum shear strain in the bituminous layer, and tensile strain at the base of the bituminous layer under standard loading and overloading by 1.25 and 1.5 times. The test results indicated that the addition of PET fibres in subgrade soil significantly increases the CBR, UCS, and internal friction angle and decreases the compaction characteristics. The use of PET fibres in subgrade stabilization can result in a significant reduction in pavement thickness. FE analysis results compare pavement rutting performance and show that overloading reduces rutting life.

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Laboratory Investigations on Lateritic Soil Stabilized with RBI Grade 81, Coconut Fiber and Aggregates

Chethan

Shankar

2022

Lecture Notes in Civil Engineering

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Effect of RBI Grade 81 on strength characteristics of clayey subgrade

Cited by 12 publications

References 2 publications

Assessment of Effect of Glass Fiber on the Geotechnical Properties of Black Cotton Soil

Assessment of Effect of Glass Fiber on the Geotechnical Properties of Black Cotton Soil

Effect of Axle Overloading on Pavement Structural Behaviour with Improved Clayey Subgrade Using PET Fibres

Laboratory Investigations on Lateritic Soil Stabilized with RBI Grade 81, Coconut Fiber and Aggregates

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