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This research paper deals with the mechanical properties of translucent concrete. Translucent concrete block is prepared by inserting the optical fibers from one side to other. The casted translucent concrete cubes are tested for mechanical properties and compare the results with mechanical properties. The cost analysis is carried out for both the concretes. Results show the improved tensile strength and similar compressive strength of translucent concrete than conventional concrete.

The Plastic is a part of our lives due to its daily usage. So, the consumption of plastic is increasing every year. The decomposition of plastic takes more than thousand years because of its non-biodegradable nature. The plastic harms the society and surrounding environment in all aspects. So, the best way to control the pollution posed by the plastic is recycling. The exponential growth in construction industry, the demand for natural aggregates increases but leads to depletion of natural resources. To overcome this issue plastic used as a fine aggregate replacement in concrete. The majority of the waste coming from the plastic bottles (Polyethylene Terephthalate) and food containers (Polypropylene). So, the recycled Polyethylene Terephthalate and Polypropylene used as a fine aggregate in concrete with percentages of 5%,10%,15%. This paper objective is to assess the effect of Polyethylene Terephthalate and Polypropylene on compressive strength and workability. The workability and compressive strength of PET and PP have given good results up to10%and 5%. It has been observed from the test results that 5% and 10% is optimum for Polypropylene (PP) and Polyethylene Terephthalate (PET)as fine aggregate in concrete respectively.

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