Abstract

The mix proportion and mechanical property of polyethylene terephthalate (PET) concrete was studied by orthogonal test and mix proportion design. Different limestone, basalt aggregate and mineral were used to mix with melted PET to produce PET concrete. The effects of mineral materials, PET, and mineral/aggregate ratio (PETWA/AG), sand ratio, PET/mineral ratio (PET/MA), and materials of coarse aggregate on PET concrete mechanical property were analyzed. The results showed that the most important factor was PETWA/AG and then sand ratio and PET/MA. Basalt was better than limestone as coarse aggregate in PET concrete. From high to low compression strength sequence of PET concrete mixed with different mineral was fly ash with 5% talc, only mixed fly ash or Portland cement (PC), mixed fly ash with 5% asphalt, without any mineral. The best mix proportion of PET concrete was PETWA/AG=1/3, sand ratio=35%, and PET/fly ash=2~1.

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