Expansive soil stabilization with coir waste and lime for flexible pavement subgrade

Goud, G. Narendra; Hyma, A.; Vaddiraju, Shiva Chandra; Rani, Reetu

doi:10.1088/1757-899x/330/1/012130

Cited by 13 publications

(2 citation statements)

References 8 publications

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“…Coconut shell coir and lime for the treatment of an expansive clay soil is used with subgrade of a flexible pavement, obtaining the combined effect of the inclusion of lime and coir in the soil causing a significant increase in CBR between 1.04% and 9% [48]. The increase in the content of coir marrow causes the reduction of density and the increase of optimal water content.…”

Section: Coconut Fiber (Coir)mentioning

confidence: 99%

Natural Fibers: An Alternative for the Reinforcement of Expansive Soils

et al. 2022

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The reinforcement of soils is the technique that geotechnical engineers currently use to improve the shear strength and bearing capacity parameters, especially when the land available for the execution of a project is not able to withstand the structural loads to which it is subjected. One of the techniques, used for this purpose since ancient times, is the incorporation of fibers into the soil matrix; however, great interest in its study has only begun in the last two, mainly because it constitutes a low-cost and environmentally friendly alternative. In this paper, a brief bibliographic review is presented on seven of the natural fibers that are currently used in order to improve the mechanical behavior of expansive clay soils (bamboo, jute, coco, palm, sugar cane bagasse, rise husk, and sawdust). It can be concluded that in many cases, the addition of certain amounts of natural fibers increases the parameters of resistance to the cutting of soils.

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Section: Coconut Fiber (Coir)mentioning

confidence: 99%

Natural Fibers: An Alternative for the Reinforcement of Expansive Soils

et al. 2022

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“…Several studies have been done by many researchers and shown that coir waste is helpful as a soil-reinforcing material. The soil's mechanical properties experienced a significant improvement [13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28]. Randomly incorporating fibers enhances soil properties such as shear strength, bearing capacity, and tensile strength.…”

Section: Introductionmentioning

confidence: 99%

Combination of Coir Fiber Waste and Coir-Wood Ash for Expansive Clay Stabilization

Widianti

2023

GEOMATE

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Coir waste randomly mixed into soil is an alternative material for strengthening expansive clay. However, these materials cannot reduce swelling due to water, requiring chemical stabilization. This study combined coir fibers with a mixture of coir-wood ash, the waste from the tofu home industry. No studies have utilized such a combination of structural materials. This study aims to examine the soaked and unsoaked California Bearing Ratio (CBR), swelling, unconfined compressive strength (UCS), and tensile strength of soil mixed with 0.75% fibers, and ash with varying content: 0%, 2%, 4%, 6%, 8%, and 10% of the mixture's total weight. The curing time was seven days, 14 days, and 28 days. Testing refers to ASTM. The test results unveiled that the unsoaked CBR, soaked CBR, UCS, and tensile strength increased with rising ash content and curing time. A 6%-8% ash content produced the highest CBR, UCS, and tensile strength. On the other hand, by including a 6%-10% ash content, the swelling was decreased to 0%. Combining coir fiber and coir-wood ash has proven very effective for stabilizing expansive clays. In comparison to soils merely reinforced with fiber, the addition of coir-wood ash can eliminate swelling and increase the value of soaked CBR, UCS, tensile strength, and secant modulus up to 534%, 349%, 105%, and 824 %, respectively.

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