• N. Usha Rani
• Dr.S.M.V.Narayana

Incorporation of pozzolanic materials as complementary cementing material, use of different types of industrial by-products or wastes and other suitable materials into concrete to enhance the properties have been carried out by many researchers during the past several decades. In most of the attempts, the supplementary materials and other wastes were used in cement in their micro size or micro form. Recently, the use of these materials in micro form in cement or concrete has gained importance in the field of the concrete technology. In the scenario of the growing production of OPC and the emission of harmful gases into atmosphere during the production of OPC leading to global warming, there is a great need to utilize the indigenous material in cement or concrete to improve the concrete properties for reducing OPC and for sustainable growth of construction field. Dolomite is a common rock forming mineral it is a calcium magnesium carbonate with a chemical component of CaMg(CO3). It is the primary component of the sedimentary rock known as dolostone and the metamorphic rock known as dolomitic marble. Dolomite powder obtained by powderising the sedimentary rock forming mineral dolostone can be used as a replacement material for cement in concrete up to certain percentage. Dolomite powder has some similar characteristics of cement. It may increase the strength of concrete to some extent. Every year about 0.2 million tonnes of fly ash is generated from RTPP located in muddanuru kadapa district. Recently government of Andhra Pradesh has restricted the use of river or natural sand for constructions. In the present study, an attempt is made to investigate the strength of OPC concrete using fly ash, dolomite and the quarry dust. The results revealed that the combination of fly ash and dolomite improve the strength of concrete with partial replacement of sand with quarry dust. The XRD analysis is conducted on dolomite and fly ash for determining their form. The XRD analysis results indicated that the fly ash and dolomite are in form.

The XRD analysis is conducted on dolomite and fly ash for determining their form. The XRD analysis results indicated that the fly ash and dolomite are in form.

"Evaluation Of Mechanical And Durability Properties Of Concrete Made By Using Dolomite , Fly Ash And Quarry Dust As Partial Replacements Of Cement And Sand ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 9, page no.482-492, September-2018, Available :http://www.jetir.org/papers/JETIR1809718.pdf

"Evaluation Of Mechanical And Durability Properties Of Concrete Made By Using Dolomite , Fly Ash And Quarry Dust As Partial Replacements Of Cement And Sand ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 9, page no. pp482-492, September-2018, Available at : http://www.jetir.org/papers/JETIR1809718.pdf