<![CDATA[In construction concrete is the most widely used building material in the world, both in construction. Concrete is a composite building material made from a combination of aggregate and cement binder. The most common form of concrete is portland cement concrete, which consists of mineral aggregates (gravel, and sand), cement and water. Indonesia is the country with the 2nd largest plastic waste producer in the world on June 7, 2017, with data on the amount of plastic in the high seas of Indonesia reaching 0.48-1.29 million tons annually. Therefore, one way to cope with plastic waste, on this occasion the author tries to conduct an experiment about the Effect of Utilization of Bottled Plastic Waste as an Additional Material on Concrete Flexural Strength. This research was carried out by making concrete with the addition of alternative polymeric materials, namely plastic bottle waste (PET). The variation of the percentage of the addition of plastic bottle waste in this study is 0%, 2%, 3%, 5% of the mass of cement and concrete material used materials originating from Kampar Regency and Padang cement with the type of PCC (Portland Composite Cement). The results of the flexural strength test, obtained the quality of concrete has decreased, which in the mix of 3% decreased concrete quality is quite low from the mixture (0%, 2%, 3% & 5%), from 53.93 kg / cm2 in the mixture of 0% to 45.09 kg / cm2 in a mixture of 3%.]]>
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