A Study of River-Borne Aggregates of River Nanoi as Construction Material

Aggregate is indispensable in all civil engineering construction works. Due to increase in infrastructure developmental works, demand for aggregate is also increases and so a thorough study of the properties is essential to select the best quality aggregates available as per the standards set by different organisations at economical rate. In North-Eastern region of India there are a number of rivers which carry innumerable aggregates. Proper use of these aggregate are economical if available near the construction site. So, a study has been carried out on Geological and Engineering properties of the river borne aggregates of the river Nanoi, Darrang district, Assam, both natural and crushed form to evaluate their suitability as construction material. The results of various geological and engineering test performed show that both the type of aggregates are suitable as construction material as per specification laid down by Indian Standard Institutions (Bureau of Indian Standard), Indian Roads Congress and Ministry of Surface Transport and various suggestions put forwarded by different authors in their different publications. However, from geological, engineering and economic point of view, aggregates of both forms from downstream side are found to be more suitable as construction materials. KeywordsAllowable limit, geo-engineering, megascopic, river-borne aggregates, workability.