Studies on durability of treated and untreated coconut Coir fibres reinforced in black cotton soil

Ragatharani, Amelneni and Sarvade, Purushotham G and Prabhu, Srinivasa B (2013) Studies on durability of treated and untreated coconut Coir fibres reinforced in black cotton soil. International Journal of Multidisciplinary Research, 2 (3). pp. 34-38. ISSN 2277-9302

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Abstract

Recently, there has been considerable interest in the potential for using coconut coir fibers for reinforcement of soil due to increase in the cost of reinforcement materials like steel rods, plastics etc., Systems made out of these reinforced materials has a very high cost of investment so they cannot be used in small scale and in rural India. Natural fibers can be a good alternative as a reinforcement material as it is environmentally friendly, economical and is feasible for rural India. Ramakrishna (1996) has investigated and found that all natural fibers degradation rate is very fast except for coir due to its high lignin content of 46%. According to Monteiro et aI., (2009) a strong alkali treatment is given to coir fibre to improve the adhesion of the soil and thus increases the strength of soil for the system. Expansive soil occurs widely allover the world. India has large tracks of expansive soil known as Black cotton soil (BCS), which is about 20% of the total area. Ramesh et aI., (2010) has observed the occurrence of black cotton soil in major areas such as Maharashtra, Gujarat, Southern parts of Uttar Pradesh, eastern parts of Madhya Pradesh, parts of Andhra Pradesh and Karnataka. The black cotton soil for the study is collected from Anantapur district Andhra Pradesh state. Agriculture remains the most important economic activity of the district. It is characterized by high levels of instability and uncertainty of soil. According to the survey of Chief Planning Officer, Anantapur (1997-2000), the district is located in the rain-shadow region of Andhra Pradesh and is a drought-prone area. According to study of Anantapur district, the normal rainfall in the district is 553 mm. Hakari et aI., (2010) observed that the degree and level of soil engineering and constructive problems run high and become multifold in case of expansive soils which exhibit the typica I character of swelling and shrinkage. Also the soil has low bearing capacity.

Item Type: Article
Subjects: Engineering > MIT Manipal > Civil Engineering
Depositing User: MIT Library
Date Deposited: 26 Jul 2016 10:03
Last Modified: 26 Jul 2016 10:03
URI: http://eprints.manipal.edu/id/eprint/146693

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