Effects of Properties on Replacement of Natural Sand with Robo sand.

Cement and concrete mortar requires fine aggregate to function correctly. Along these lines, there is a need for clean sand in production from construction solidity. The demand for Natura River sand has outpaced the availability, resulting in a fas depletion of traditional sand sources. Robo sand is the solution to this problem, notably since some states have banned waterway sand for construction. According to sources, Robo sand for construction is widely used from one side of the globe to the other. Experts of significant projects worldwide demand Robo sand as a requirement due to its predictability without any pollution. Sand is artificial sand produced by crushing rock or granite for use in cement or concrete construction. The physical and mineralogical properties of M sand vary from those of normal river sand. Concrete is widely used all over the world, and its usage rate exceeds that of water. Natural resources are depleting at an alarming rate as a result of infrastructure growth. M-sand in concrete has many advantages, including increased strength for different percentages of natural sand replacement and reduced sand mining from riverbeds. 

MATERIAL AND METHODOLOGY

Concrete's toughness refers to its ability to withstand weathering, chemical attack, and abrasion while retaining its intended engineering properties. The need of the hour is to concentrate more on the toughness properties of concrete with M-sand for extreme exposure conditions to understand the conduct and residual strength properties better. In concrete, the effects of fine aggregate particle texture and form are more prominent than the effects of coarse aggregates. By using fine aggregates with an angular structure, better particle interlocking can be achieved, potentially increasing the strength of cement concrete. Since sand has a high angularity, it causes less workability in cement concrete due to the increased surface area. Sand, whether raw, broken, or manufactured, is used to making fine aggregate. IS:2386 measures fine aggregate physical properties such as specific gravity, gradation, and fineness modulus. Artificial/Robo sand made by proper machines may be a safer alternative to river sand. 

ROBO SAND AND PROPERTIES

Robo sand is a filtered type of quarry dust that is excreted during the coarse aggregate manufacturing process. The majority of which is in the form of chips. As needed, these baby chips are crushed to a size of 0-4.75mm. In reality, natural sand and Robo sand have a similar appearance. Many properties, such as water absorption, are identical. However, they have recently begun producing sand separately. Increased mining of natural sand from riverbeds causes several issues, including the loss of water-retaining sand strata, narrowing river courses and causing bank slides, disrupting marine life, and affecting agriculture due to lower underground water levels. Robo Sand is a type of fine aggregate made from crushed stone, gravel, or slag. Used to describe aggregate material with a thickness of less than 4.75 mm that has been extracted from crushed rock or gravel and is intended for use in construction. In contrast to non-refined surplus from coarse aggregate processing, Robo sand is a high-quality commodity. This natural sand is discovered to have a specific gravity of 2.55. 

FLEXURAL STRENGTH

Since construction aggregates properties affect the toughness and efficiency of concrete, fine aggregate is an essential component of concrete and cement mortar. Since aggregate forms the main matrix of concrete or mortar, it is critical to obtain the right sort and high-quality aggregate on site. According to experimental results, the flexural strength of the beam at 28 days for the traditional mix 100 per cent Robosand was 18.07 per cent higher than that of the conventional mix. Compared to a 100 per cent Robosand mix, increased percentages of the flexural intensity of 25 per cent GGBS mix, 50 per cent GGBS mix, and 70 per cent mix were 1.03 per cent, 9.65 per cent, and 3.26 per cent, respectively. With Robo powder, concrete specimens were cast with 0 per cent, 50 per cent, 75 per cent, and 100 per cent substitute fine aggregate. Standard cylinders measuring 150mmx300mm (diameter x height) were launched and split tensile strength tested for 7 and 28 days. Standard prisms of 500mm x 100mm x 100mm were also cast and tested for flexural strength for 28 days, and the percentage of water absorption in both Robo Sand and Robo Sand were observed.