100 percentage quarry dust instead of river sand strength and durability of fiber reinforced concret

 Quarrying in the field of production and running of the main atmospheric pollutants in dust, dust mainly from punch, drilling, blasting, loading and transportation etc. operation process, are fugitive emissions. The size of the amount of dust and stone grain size composition, moisture and wind speed related, the dust on the surrounding human and animal respiratory system, on the surrounding vegetation photosynthesis have effects can not be ignored, should cause enough attention. 

Concrete has been the popular construction material used since the past until now. Normally the concrete is mixed from cement, sand, stone and water sometime with use admixture. The construction industry expects a serious shortage of river sand in our country. In such a situation the Quarry rock dust can be an economic alternative material to the river sand. Quarry dust has been rampantly used in different construction purposes but replacement technology has emerged as an innovative development to civil engineering material. The use of quarry dust in concrete is desirable because of its benefits such as useful disposal of by products, reduction of river sand consumption as well as increasing the strength parameters and increasing the workability of concrete . It 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 etc.. 

Concrete is homogeneous mixture of binding material, coarse aggregate, fine aggregate and water. It is the most widely used building material. This is because of its versatility. It has desirable engineering properties. It can be made on site using easily available materials.The use of concrete for low cost housing and rural housing has not been extensive. There are many areas where there could be a considerable increase in the use of cement based products.The global consumption of natural sand is very high, due to the extensive use of concrete. In general, the demand of natural sand is quite high in developing countries to satisfy the rapid infrastructural growth, in this situation developing country facing shortage in good quality natural sand. natural sand deposits are being depleted and causing serious threat to environment as well as the society. Increasing extraction of natural sand from river beds causing many problems, loosing water retaining sand strata, deepening of the river courses and causing bank slides, loss of vegetation on the bank of rivers, exposing the intake well of water supply schemes, disturbs the aquatic life as well as affecting agriculture due to lowering the underground water table etc are few examples.In the recent past good attempts have been made for the successful utilization of various industrial by products (such as flyash, silica fume, rice husk ash, foundry waste) to save environmental pollution. In addition to this, an alternative source for the potential replacement of natural aggregates in concrete has gained good attention. As a result reasonable studies have been conducted to find the suitability of granite quarry dust in conventional concrete. The feasibility of the usage of Quarry dust as hundred percent substitutes for Conventional Concrete with some addition of 5% of steel fibre to be added in the total volume of concrete.  

· Equipment:

Vibrating Screen , PE jaw crusher , pf impact crusher . In medium crushing process, Impact Crusher or cone crusher are used. Cone crusher is mainly used in fine crushing unit. Vibrating screen is the screening machine in stone crushing plant.

100 percentage quarry dust instead of river sand strength and durability of fiber reinforced concret

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