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原文传递 Use of Locally Available Non Conventional Materials in the Construction of Rural Road Pavements

题名：	Use of Locally Available Non Conventional Materials in the Construction of Rural Road Pavements
其他题名：	•"Use of Marginal Material in Road Construction Editorial,Indian Highways,vol.26,No.26,Aug 1998.pp 3-4.
正文语种：	英文
作者：	Suresh Kumar
关键词：	CBR-California bearing ratio;GSB-Granular Sub-base;IRC-Indian Road Congress;PCC-Plain Cement Concrete
摘要：	The paper suggests a framework for preparing a database on the availability of materials in a locality with all details such as quantity available, engineering properties and how they can be used in pavement construction. The paper is aimed at providing suitable gradation for sub base layer in flexible pavement with locally available materials known as marginal material. Preliminary study was carried out to identify locally available construction materials. For this purpose different types of local materials were tried to explore their potential of using in subbase layers as well as in improving sub-grade strength. Based on theexperimental studies carried out on the construction materials such as moorum, kankar, gravel, construction and demolition waste collected from different areas of Koderma town and in the vicinity of Chandwara block, in koderma district of Jharkhand State, it has been observed that the selected materials which are abundantly available in the area could be used effectively for the construction of unbound layers of pavement for moderate traffic road. The materials experimented include marginal materials such as construction and demolition waste (Dismantled P.C.C etc.), Gravel &kankar, soil/moorum (all locally available). Exhaustive tests were performed in grading different components & the CBR value of all the mixes were measured, along with other strength parameters and properties. Field compaction tests by sand replacement method (as prescribed by National Rural Road Development Agency, New Delhi) were carried out to achieve optimum conditions at proctor density. Based on the test result of designed mix the design of pavement as per IRC codal provisions were done. It is noteworthy, that the pavement designed based on use of non-conventional materials in GSB layer and subgrade strength improvement (CBR increasing from 4.43 to 6.03 for sub-grade) result in the reduction of overall pavement thickness by 50 mm, resulting in the considerable saving in materials and overall cost as well as preserving our precious environment.
出版年：	2016
论文唯一标识：	I-75Y2016V44N09007
英文栏目名称：	TECHNICAL PAPAERS
期刊名称：	Indian Highways
拼音刊名(出版物代码)：	I-75
卷：	44
期：	09
页码：	19-25