This project aims to study the mechanical properties of the physical gently mix the gross waste of High Impact Polystyrene (HIPS), which in the experiment. The factors include sand, cement (S / C) = 0.2, 0.3, 0.4 by weight ratio of water to cement (W / C) = 0.45, 0.50, 0.55 and HIPS = 10,15,20 percent of the total weight of the sample. The test showed that the ratio of gross light ideal for lightweight concrete with a density as low as 28 days, including water to cement (W / C) = 0.55, sand, cement (S / C). = 0.4 and HIPS = 20 percent, with a density of 1,630 kg / m3, and the ratio most suitable for aerated concrete, which can be compressed as much as possible to 28 days, including water to cement (W / C) = 0.45 sand. cement (S / C) = 0.2 and HIPS = 10 percent, the value of 28.43 MPa compressive strength of the test specimen can be arranged. In light kind of concrete structures. The unit weight of 1,756.67 kg / m and has a compressive strength of 28.43 MPa and compared the percentage increase strength of concrete mortar. Choose from the ideal ratio of ingredients found in the first 7 days = 27.56 MPa compressive strength to strength at 28 days = 28.07 MPa only increased. 1.85%
, which if brought ingredients with no waste HIPS compared to mix with garbage HIPS in the incubation period of 28 days, the ingredients have high compressive strength possible without waste HIPS is mix 1 = 37.88 MPa and a waste HIPS. Ingredients 1 = 28.43 MPa, which is the difference between just 25%.
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