Solidifikasi Limbah Fly Ash Hasil Pembakaran Incinerator Industri Tekstil sebagai Campuran Beton

Abstract

Fly ashfrom incinerator is classified into hazardous waste (B3 waste) so that needa special treatment. This research aimed to find out the level of heavy metal mobilization into concrete with fly ash. Beside that to find out the quality of compression and percentage of optimum fly ash increasing in concrete from technical, health and environmental aspect. One of treatment methods which is used in this research is solidification. In this process, there are 10%, 20%, 30% and 40% variated concrentrations of fly ash in mixture concrete, with sufficient water in that mixture, and formed in 10 cm x 20 cm. After that, it should be care for 28 days before compression test. This make for 10 of concrete sample. After pressure test, that sample should be test for compression and leachate using TCLP methods. From this research, in 10% > the results from compression is 211,82 kg/cm², with better quality because the compression o fconcrete is bigger than standart, is 161,85 kg/cm², then in 20% and 30%, with 146,51 kg/cm² and 174,06 kg/cm² creating the compression value looks the same as standart, while in 40% of fly ash,; 174,06 kg/cm², , while in 20%, and 40% of fly ash are 146,51 kg/cm² and 108,14 kg/cm² creating the compression under of standart is 108,14 kg/cm² so, it can make aless concrete quality. The leachate examination of Cr, Zn and Pb in concrete with Toxicity Charateristic Leaching Procedure (TCLP) methods in 10%, 20%>, 30% and 40%, fly ash were still below the quality standart PP 18 tahun 1999. Because of that, the percentage of optimum fly ash in concrete from technical, health and environmental aspect is 10% with compression value is 211,82 kg/cm² and leachate examination of Cr, Zn and Pb are 0,3529 mg/L; 30,5391 mg/L and l,0679 mg/L. Fly ash from incinerator woven suitable for using as a mixture concrete.