Experimental Study on Practice of Cement Treated Subbase (CTSB) Layer in Flexible Pavement of National Highways in India

Experimental Study on Practice of Cement Treated Subbase (CTSB) Layer in Flexible Pavement of National Highways in India

S. Loganayagan, N. Chandra Mohan, S. Ramakrishnan, T. Gokulakannan

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Abstract. Due to the large number of infrastructure projects taking place in rural and urban areas there has been a shortage of building materials. The road industry is looking at ways to improve low-quality materials that are easily accessible for use in road construction. Cement / lime treatment has become an acceptable way to increase soil strength and consistency with moderate proportions, to reduce the number of compounds. The Indian roads congress (IRC) has developed a special edition for the mixed construction of the base / ground floor. There is no design guide currently available for the under the cement base. To overcome this problem, the aim of the current project is to create a chart of the paved area using concrete and limestone on rural and urban roads with small and medium vehicles. It not only saves money but also helps to increase the life cycle of roads. At the base of the road, there are different soils or granite materials available for construction, but they may indicate insufficient structures and lead to significant road stress and reduced life. However, the addition of a stabilizing agent such as cement, asphalt, lime or other non-traditional materials can improve soil properties. Among these various stable materials, cemented materials improve strength and high strength, and demonstrate the excellent performance of the paved system and high durability. Solid foundations can provide inexpensive solutions to many common designs and building conditions. Cement Treated Sub Base (CTSB) is a common method used on road foundations to improve its engineering properties due to the durability of cement where moisture is present and extends the healing time. The bonded base material provides additional strength and support without increasing the overall thickness of the mortar layers. Depending on the needs of the project, CTB increases construction speed, improves the capacity of the pavement structure, or in some cases reduces the full-time project. In addition, a strong foundation reduces deviation due to heavy traffic loads, thereby extending the life of the pavement. CTB base thickness is reduced due to higher carrying capacity compared to granular base thickness.

Cement Foundation, Bituminous Concrete, Ground Floor, Easily Paved Surface

Published online , 12 pages
Copyright © 2022 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA

Citation: S. Loganayagan, N. Chandra Mohan, S. Ramakrishnan, T. Gokulakannan, Experimental Study on Practice of Cement Treated Subbase (CTSB) Layer in Flexible Pavement of National Highways in India, Materials Research Proceedings, Vol. 23, pp 33-44, 2022

DOI: https://doi.org/10.21741/9781644901953-5

The article was published as article 5 of the book Sustainable Materials and Smart Practices

Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

[1] Chummuneerat S, Jitsangiam P, Nikraz H. Shrinkage behavior of cement modified base course materials for Western Australian pavements. InInternational Public Works Conference, 2013, Darwin, Northern Territory, Australia 2013 Aug. https://doi.org/10.7158/C11-714.2013.11.1
[2] Ismail A, Baghini MS, Karim MR, Shokri F, Al-Mansob RA, Firoozi AA, Firoozi AA. Laboratory investigation on the strength characteristics of cement-treated base. InApplied mechanics and materials 2014 (Vol. 507, pp. 353-360). Trans Tech Publications Ltd. https://doi.org/10.4028/www.scientific.net/AMM.507.353
[3] Varma BP, Sirisha KP. Study of Processing and Machinery in Cement Industry. International Journal of Engineering and Innovative Technology. 2013 Nov;3(5):385-93.
[4] Shafeek AM, Salah H, Shehata N, Saddek AB. The impact of cooling water types on the cement clinker properties. Egyptian journal of petroleum. 2018 Sep 1;27(3):277-84. https://doi.org/10.1016/j.ejpe.2017.04.003
[5] Kosmatka SH, Kerkhoff B, Panarese WC. Design and control of concrete mixtures. Skokie, IL: Portland Cement Association; 2002 Jan 1.
[6] Patil VP, Karvekar AV. A Review on a Study of Cement Treated Base and Sub-Base in Flexible Pavement. Technology (IJCIET). 2017 May;8(5).
[7] IRC: 115. Guidelines for Structural Evaluation and Strengthening of Flexible Road Pavements Using Falling Weight Deflectometer (FWD) Technique. New Delhi: The Indian Roads Congress.
[8] Javdanian H, Lee S. Evaluating unconfined compressive strength of cohesive soils stabilized with geopolymer: a computational intelligence approach. Engineering with Computers. 2019;35(1):191-9. https://doi.org/10.1007/s00366-018-0592-8
[9] Little DN, Nair S. NCHRP web-only Document 144: Recommended practice for stabilization of subgrade soils and base materials. Transportation Research Board of the National Academies, Washington, DC. 2009.
[10] Smith T, Eng P, Barnes CL, Eng P, Zupko S. The Use of Engineered Soils in Canada. In Transportation 2014: Past, Present, Future-2014 Conference and Exhibition of the Transportation Association of Canada//Transport 2014: Du passé vers l’avenir-2014 Congrès et Exposition de l’Association des transports du Canada 2014.
[11] Congress IR. Guidelines for the design of flexible pavements. Indian code of practice, IRC. 2001;37.
[12] George KP. Minimizing cracking in cement-treated materials for improved performance 2002.
[13] Kishore K. Mix Design For Concrete Roads As Per IRC: 15-2011.
[14] Bagarre ED. Utilisation des graveleux latéritiques en technique routière. 1990.
[15] Crepin Z, Mohamed G, Ezechiel A, Crespin YA. Optimisation cement content for gravelly lateritic for realization of pavements base in North Benin. 2013(2).
[16] Tapase AB, Ranadive MS. Performance evaluation of flexible pavement using the finite element method. InGeo-China 2016 2016 (pp. 9-17). https://doi.org/10.1061/9780784480090.002