KAJIAN POTENSI EMISI KARBON METODE KONSTRUKSI CAST IN-SITU DAN PRECAST PADA PROYEK IRIGASI RIMP LOS-01 INDRAMAYU
Keywords:
Cast in-situ, Emisi Karbon, Irigasi, Life Cycle Assessment, PrecastAbstract
Sektor konstruksi merupakan salah satu penyumbang utama emisi karbon global, khususnya pada tahap konstruksi akibat konsumsi energi dan penggunaan material berintensitas karbon tinggi. Penelitian ini bertujuan untuk menganalisis dan membandingkan potensi emisi karbon antara metode konstruksi cast in-situ dan precast pada Proyek Irigasi RIMP LOS-01 di Kabupaten Indramayu. Pendekatan yang digunakan adalah Life Cycle Assessment (LCA) dengan fokus pada Modul A4 (transportasi material) dan Modul A5 (proses konstruksi). Data aktivitas diperoleh dari kondisi aktual proyek, meliputi jarak transportasi material, konsumsi bahan bakar dan energi, serta aktivitas konstruksi di lapangan. Perhitungan emisi dilakukan menggunakan pendekatan faktor emisi sesuai pedoman IPCC. Hasil analisis menunjukkan bahwa metode cast in-situ menghasilkan total emisi karbon sebesar 1.293,58 tCO₂e, sedangkan metode precast menghasilkan emisi sebesar 439,42 tCO₂e. Dengan demikian, penerapan metode precast mampu mereduksi potensi emisi karbon hingga 67% dibandingkan metode cast in-situ. Temuan ini menunjukkan bahwa metode precast merupakan alternatif konstruksi yang lebih ramah lingkungan dan berpotensi mendukung penerapan pembangunan infrastruktur berkelanjutan di Indonesia.
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