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A Study Bakelite Plastics Waste from Industrial Process in Concrete Products as Aggregate

Seree Tuprakay 1, Nopagon Usahanunth 1,2, and Sirawan Ruangchuay Tuprakay 1,2
1. Faculty of Engineering, Ramkhamhaeng University, Huamark, Bangkapi, Bangkok, Thailand 10240
2. Faculty of Science and Technology, Suan Dusit University, Bangplad, Bangkok, Thailand 10700

Abstract—Bakelite is prohibited to dispose for direct land filling and open burning because of the unsafe disposal and emission reasons. The purposes of this research are characterization of BPW and using BPW as aggregates in concrete products. The physical characteristics of BPW, the bulk specific gravity was 1.30-1.40 g/cm3. Chemical composition of BPW, total carbon, hydrogen, oxygen and sulfur was 53.4, 4.0, 11.6 and 0.017%, respectively. Composition of ash of Bakelite, CaO, SiO2 and SO3 was 94.53, 5.14 and 0.33%, respectively. pH value of BPW and fine Bakelite plastics waste (FBPW) was 8.10 and 12.00, respectively. Water absorption capacity of BPW and FBPW was 0% and 25%, respectively. After grinding, BPW become FBPW. The water absorption of FBPW was 25%. Using BPW as aggregates in concrete products by preparing and testing mortar samples with 0%, 20%, 40%, 80% and 100% replacement percentage at each curing age 7, 14 and 28 days. Based on a testing standard of American Society for Testing Material (ASTM). The specimen test results showed that the compressive strength and density of Bakelite plastics waste Mortar (BPWM) was lower than Conventional Mortar (CM). The compressive strength decreased with increasing of replacement percentage and it increased with curing time.

Index Terms—Bakelite plastic waste, concrete products, aggregate

Cite: Seree Tuprakay, Nopagon Usahanunth, and Sirawan Ruangchuay Tuprakay, "A Study Bakelite Plastics Waste from Industrial Process in Concrete Products as Aggregate," International Journal of Structural and Civil Engineering Research, Vol. 6, No. 4, pp. 263-267, November 2017. doi: 10.18178/ijscer.6.4.263-267