• TOKALA SAMBASIVA RAO
• K ADITYA NANDINI

---- River sand is the most commonly and widely used material for constructions. But now-a-days this has been expensive due to excessive cost of transportation from natural sources and also large-scale depletion of these sources creates environmental problems. As environmental transportation and other constraints make the availability and use of river sand less attractive, a substitute or replacement product for concrete industry needs to be found. As it is the most commonly used fine aggregate in the production of concrete, it poses the problem of acute shortage in many areas. Where the continuous usage of it has started posing serious problems with respect to its availability, cost and environmental impact. In such a situation the Fly ash and Quarry rock dust can be an economic alternative to the river sand. Quarry Rock Dust can be defined as residue, tailing or other non-voluble waste material after the extraction and processing of rocks to form fine particles less than 4.75mm. Usually, Quarry Rock Dust is used in large scale in the highways as a surface finishing material and also used for manufacturing of hollow blocks and lightweight concrete prefabricated Elements. Use of Quarry rock dust as a fine aggregate in concrete draws serious attention of researchers and investigators. Fly ash, also known as "pulverized fuel ash" is one of the coal combustion products, composed of the fine particles that are driven out of the boiler with the flue gases. This paper presents the feasibility of the usage of Quarry Rock Dust as forty percent substitutes for Natural Sand in concrete and cement is replaced by fly ash. Mix design has been developed for three grades using design an approach IS, for both conventional concrete, and non conventional concrete. Tests were conducted on physical, mechanical and workability tests, sieve analysis, water absorption tests on concrete of fly ash and Quarry Rock Dust and the results were compared with the Natural Concrete.

Fly ash,Quarry Dust, Cement, Fine aggregate, Partial Replacement, M30, M50 Grade Concrete, Workability, Compressive Strength, Flexural Strength, Split tensile Strength.

"EXPERIMENTAL INVESTIGATION ON PARTIAL REPLACEMENT OF CEMENT WITH FLY ASH AND QUARRY DUST AS FINE AGGREGATE", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.3, Issue 11, page no.106-115, November-2016, Available :http://www.jetir.org/papers/JETIR1611016.pdf

"EXPERIMENTAL INVESTIGATION ON PARTIAL REPLACEMENT OF CEMENT WITH FLY ASH AND QUARRY DUST AS FINE AGGREGATE", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.3, Issue 11, page no. pp106-115, November-2016, Available at : http://www.jetir.org/papers/JETIR1611016.pdf