PEMANFAATAN ABU SEKAM PADI DAN FLY ASH SEBAGAI BAHAN SUBSTITUSI PARSIAL SEMEN PADA SEGMEN KOLOM STRUKTUR MODULAR BETON RAMAH LINGKUNGAN
Authors: Alviana Azizah Dara , Habsya Chundakus , Agustin Rima Sri 
Published: June 2023

<p dir="ltr"><span>Abstrak : </span><span>Pembangunan konstruksi di Indonesia terus mengalami peningkatan  dan membutuhkan inovasi komponen bangunan ramah lingkungan. Penelitian ini bertujuan untuk menganalisis: (1) persentase optimal substitusi abu sekam padi dan </span><span>fly ash </span><span>terhadap kuat tekan segmen kolom struktur modular beton. (2) persentase optimal substitusi abu sekam padi dan </span><span>fly ash </span><span>terhadap penyerapan air segmen kolom struktur modular beton (3) kriteria ramah lingkungan segmen kolom struktur modular beton menggunakan abu sekam padi dan </span><span>fly ash. </span><span>Penelitian ini merupakan penelitian kuantitatif eksperimen dengan standar uji kuat tekan SNI 7833-2012 dan penyerapan air SNI 03-6433-2000 dengan umur perawatan 28 hari. Sampel penelitian memiliki komposisi campuran bahan semen: pasir: kerikil yaitu 1: 2,67: 2,89 dan nilai FAS 0,55. Persentase abu sekam padi terhadap substitusi sebagian semen yaitu 10% dan persentase </span><span>fly ash </span><span>terhadap substitusi sebagian semen yaitu 10%, 15%, dan 20%.  Hasil penelitian menunjukkan bahwa: (1) Kuat tekan maksimal terjadi pada persentase optimal 10% abu sekam padi dan 15% </span><span>fly ash, </span><span>sebesar 142,15 kgf/cm</span><span><span>2</span></span><span>. (2) Penyerapan air minimal terjadi pada persentase optimal 10% abu sekam padi dan 15% </span><span>fly ash, </span><span>sebesar 6,262%. (3) penggunaan abu sekam padi dan </span><span>fly ash </span><span>memiliki ciri-ciri beton ramah lingkungan dan mampu mengurangi gas emisi CO</span><span><span>2 </span></span><span>sebesar 67,91 kg per m</span><span><span>3</span></span><span>.</span></p><p dir="ltr"><span>Abstract : </span><span>Construction development in Indonesia to increase and requires innovation of environmentally friendly building components. This study aims to analyze: (1) the optimal percentage of substitution of rice husk ash and fly ash on the compressive strength of the concrete modular structure coloumn segments. (2) the optimal percentage of substitution of rice husk ash and fly ash on the water absorption of the concrete modular structure coloumn segments. (3) the environmental friendly criteria for the concrete modular structure coloumn segments using rice husk ash and fly ash. This research is an experimental quantitative research with compressive strength test standard SNI 7833-2012 and water absorption SNI 03-6433-2000 with 28 days of curing. The sample has a composition of a mixture of cement: sand: gravel that is 1: 2.67: 2.89 and the FAS value is 0.55. The percentage of rice husk ash to partial substitution of cement is 10% and the percentage of fly ash to partial substitution of cement is 10%, 15%, and 20%. The results showed that: (1) The maximum compressive strength occurred at the optimal percentage of 10% rice husk ash and 15% fly ash, amounting to 142.15 kgf/cm</span><span><span>2</span></span><span>. (2) Minimum water absorption occurs at the optimal percentage of 10% rice husk ash and 15% fly ash, which is 6.262%. (3) the use of rice husk ash and fly ash concrete has characteristics environmentally friendly and able to reduce CO</span><span><span>2 </span></span><span>emissions</span><span>amounted to 67.91 kg per m3.</span></p><div><span><br /></span></div>