Studi Eksperimental Pembuatan Ekosemen dari Abu Sampah dan Cangkang Kerang sebagai Bahan Alternatif Pengganti Semen

Abstract

Telah dibuat ekosemen dari bahan abu sampah organik dan abu cangkang kerang. Sampah organik dibakar dengan insinerator pada suhu 1000^oC. Abu cangkang kerang dipanaskan dengan furnace pada suhu 700^oC. Hasil pengujian komposisi awal XRD (X-Ray Diffraction), Abu sampah organik mengandung 69,7% CaCO₃; 12,1% KCl; 4% Cd_0.15Gd_0.85; 3% SiO₂; 8,1% Fe ( Se_0.5Te_0.5) dan 3% Al₂ErGe₂, Abu cangkang kerang mengandung 100% CaCO₃. Ditentukan tiga variasi jumlah komposisi Abu sampah:Abu cangkang kerang yaitu Ekosemen A (58,2%:40%); Ekosemen B (49,1%:49,1%) dan Ekosemen C (54,01%:44,09%). Sebagai variabel kontrol digunakan Semen Portland jenis OPC (Ordinary Portland Cement) merek ‘Semen Gresik’. Dilakukan pengujian fisika yaitu kuat tekan mortar dan densitas serbuk. Pengujian XRD dilakukan untuk mengetahui komposisi kimia dari ekosemen. Dari hasil pengujian fisika didapat ekosemen B paling mendekati nilai ‘Semen Gresik’ OPC yaitu kuat tekan 3 hari (7,2 kg/cm²) dan densitas serbuk (2,535 gr/ml).

CC Licencing

Authors who publish with this journal agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).