ANALYSIS OF PROPERTIES OF CONCRETE USING MANUFACTURE SAND AS FINE AGGRIGATES

Aggregate in concrete acts as structural filler, these place a crucial than simple statement implies it is the material that the cement paste coats and blind together. Now a day’s using river sand is prohibited by government, as these cause soil erosion. In this paper analysis of properties of concrete using manufacture sand as course aggregate is studied and verified the strength of concrete and temperature emitted due to chemical reaction to the normal Portland cement. Using manufacture sand as course aggregate the temperature emitted due to exothermal reaction of concrete has reduced. Although the compressive strength of the concrete has reduced compared to normal concrete where no admixtures were used to enhance the properties of concrete.


Introduction
Manufacture sand also called M sand this substitute of river sand for construction. This M sand is manufactured by crushed sand is of cubic shape with grounded edges, washed and graded to as a construction material. The average of size of manufactured sand is less than 4.35 mm. As sand mining from river is the direct cause of erosion and also impacts the local wild life [1]. Sand mining is regulated by law in many places, but is still glen done illegally [2]. Many countries like Australia, India, New Zealand, SiellaLeone, United states etc. have strictly regulating the mining of sand from river and coastal areas. Sand mining is a practice that is becoming an environmental issue in India. Environmentalists have raised public awareness of illegal sand mining in many states of India [3] [4]. Although M sand aggregates are angular and rougher texture. These increase the demand of water. Water demand can be compensated with cement content. By adding water retarding admixtures M sand contains zecosilt, no oversized material and no marine products. Though M sand uses artificial fine aggregates to form, it causes less damage to environment as compared to rivers sand. This M sand is recommended for RCC purpose and brick/block works. M sand contains elements like Si, Al, CA, Mg, Na, K, Fe etc. Hence M sand is best substitute for river sand and coastal sand.
Manufacture sand used as a fine aggregate the absorbing temperature properties have reduced. But, increased in flexural strength, very less number of literature found related to present study, the author just compared his work with general concrete using river sand as fine aggregate.

Methodology
Fine Aggregates of M sand is collected; these aggregates are separated by all dust such as leaves and dust.
These fine aggregates are allowed to pass through 10mm sieve, and then aggregates which were passed were allowed to pass through 4.75mm sieve. These aggregates are carefully handled because no other particles must not enter these aggregates are mixed with course aggregates and cement to form concrete powder using proportions, as per IS10262-2009 The specific gravity of safety matches was found 2.03 by Le-Chatelier principle [5] [6]. The compression and flexure strength were tested for 1, 7, 14, 21, 28 days after casting.
An empty spaced cube with bottom, size of 10*10*10cm casted a walls of thickness 1cm using concrete of manufacture sand as fine aggregates walls of thickness 1cm. Water of 1000c was filled in empty cube and the time consumed for reduction of temperature of water to 400c were noted down. This gives the time consumed by cube to reduce inner temperature of 1000c of water to 400c.
An empty cube casted by using manufacture sand as fine aggregates concrete size 10*10*10 was inserted into another larger empty cube casted using plane cement concrete size of 15*15*10cm. 3cm sufficient space was left between two cubes was filled with Water of 100c and top side of cube was closed by lid. Water temperature was noted down after 8mins for 1, 7, 14, 21, 28 days of similar casted samples. The difference between the water temperature noted after 8min and the temperature at room temperature gives the amount of heat transmitted through the walls of inner cube.