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Strength & Durability of Concrete with Sand Blasting Residue
Abstract
Sand blasting residue (SBR) is commonly obtained as a by-product from chain manufacturing industries. Although it is a waste material but can be used in the mixing of concrete. The work has been divided into two parts. Part 1 covers preparation of M20concreteby substituting SBR as replacement of sand in different percentage such as 40%, 50%, 60%, 70% & 80%. The w/c ratio is kept as 0.5 with adequate does of Super-plasticizer. In Part 2- the same grade of concrete is prepared with increased w/c ratio without using Super-plasticizer. After 14 days of curing the cubes were tested for acid attach by allowing them to soaked the acid for a different duration. The PH value was kept at 2.5 for this test. The rheological and mechanical properties of different mixtures were evaluated based on workability, self-weight of the concrete, compressive strength. The acid attack test was observed at 5 days of regular interval up to 25 days and the compressive strength was taken at 7, 14, & 28 days by using the destructive testing as well as non-destructive testing techniques. The results obtained from samples of SBR as 50% replacement to sand is preferred because of their advantageous mechanical and strengthening properties. From the test results of the above investigation, it can be concluded that the replacement of fine aggregate by SBR up to 70% by weight increases the compressive strength of concrete and further addition of SBR results in the reduction of compressive strength. It also has the great advantage of waste disposal of SBR materials.
Keywords: Sand Blasting Residue, Durability, Acid Attack, Compressive Strength, Rebound Hammer.
Cite this Article: Salunkhe U. S., Pathak K.K., Mahajan A. S., Shaikh A. S. Strength & Durability of Concrete with Sand Blasting Residue. International Journal of Concrete Technology. 2020; 6(1): 32–41p.
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