OPTIMALISASI PEMBUATAN BETON RINGAN MENGUNAKAN METODE TAGUCHI DENGAN PENAMBAHAN SILICA FUME

FAJAR PURWANTO, Lava Himawan., ST., MT.

2015 | Tugas Akhir | D3 TEKNIK SIPIL

Beton ringan adalah beton yang memiliki berat jenis lebih ringan dari pada bata pada umumnya. Beton ringan dibedakan menjadi 2 (dua) macam: Autoclaved Aerated Concrete (AAC) dan Cellular Lightweight Concrete (CLC). Penelitian ini dititik beratkan pada nilai kuat tekan beton optimum, porositas minimum dan berat jenis yang rendah dari variasi mix design yang dibuat. Beton ringan yang di pakai dalam penelitian ini dengan jenis CLC (Cellular Lightweight Concrete) dengan bahan penyusun yang meliputi air, pasir, semen silica fume, bubble dan superplacitizer. Metode yang digunakan adalah metode Taguchi dengan penetapan 4 bahan 3 variasi. Water/cement (w/c): 0,40; 0,45; 0,50, Sand/Cement ( s/c ): 0,25; 0,50; 0,75 , Foam(bubble) 40%, 50%, 60% (%):, Silica Fume/ Cement (%):0,1000; 0,1500; 0,200 ,Superplasticizer (%): 0.05. Pengujian yang dilakukan yaitu uji kuat tekan ,porositas dan uji berat jenis. Hasil penelitian berdasarkan nilai kuat tekan yang optimum mix design 6 dengan nilai rata-rata kuat tekan 3,4 N/mm2, nilai porositas minimum mix design 2 dengan nilai rata-rata porositas 16,70 %, dan nilai berat jenis minimum mix design 5 dengan nilai rata-rata berat jenis 545.60 kg/m3. Setelah menggunakan menggunakan Metode Taguchi di dapatkan komposisi campuran untuk kuat tekan maksimum adalah Water/cement (w/c): 0,45, Sand/Cement ( s/c ): 0,75 , Foam(bubble) 40% (%):, Silica Fume/ Cement (%) : 0,1500, untuk komposisi porositas minimum Water/cement (w/c): 0,40 Sand/Cement ( s/c ): 0,75 , Foam(bubble) 50 (%):, Silica Fume/ Cement (%):0,200 sedangkan untuk berat jenis minimum adalah Water/cement (w/c): 0,40, Sand/Cement ( s/c ): 0,25, Foam(bubble) 60% (%):, Silica Fume/ Cement (%):0,1000

Lightweight concrete is concrete that has a specific gravity lighter than a brick in general . Lightweight concrete is divided into two (2 ) types : autoclaved Aerated Concrete ( AAC ) and Cellular Lightweight Concrete ( CLC ) . This research emphasis on optimum value of concrete compressive strength , minimum porosity and density that is lower than the variation mix design are made . Lightweight concrete in use in this study with the type of CLC ( Cellular Lightweight Concrete ) the constituent material which includes water , sand , cement silica fume , bubble and superplacitizer . The method used is the Taguchi method with determination 4 3 material variations . Water / cement ( w / c ) : 0.40 ; 0.45 ; 0.50 , Sand / Cement ( s / c ) : 0.25 ; 0.50 ; 0.75 , Foam (bubble ) 40 % , 50 % , 60 % ( % ) :, Silica Fume / Cement ( % ) : 0.1000 ; 0.1500 ; 0.200 , superplasticizer ( % ) : 0:05 . Tests were performed that test compressive strength, porosity and density test. The results based on the value of the compressive strength of the optimum mix design 6 with an average value of compressive strength of 3.4 N / mm2 , minimum porosity value mix design 2 with an average porosity of 16.70 % , and the value of the minimum specific weight mix design 5 with an average density of 545.60 kg / m3 . After using using the Taguchi method in the composition of the mixture to get the maximum compressive strength is Water / cement ( w / c ) : 0.45 , Sand / Cement ( s / c ) : 0.75 , Foam (bubble ) 40 % ( % ) : , Silica Fume / cement ( % ) : 0.1500 , for a minimum porosity composition Water / cement ( w / c ) : 0.40 Sand / cement ( s / c ) : 0.75 , Foam ( bubble ) 50 ( % ) : , Silica Fume / cement ( % ) : 0.200 whereas the minimum specific weight is water / cement ( w / c ) : 0,40 , Sand / cement ( s / c ) : 0.25 , Foam (bubble ) 60 % ( % ) :, Silica Fume / Cement ( % ) : 0.1000.

Kata Kunci : Beton Ringan, Silica Fume, Metode Taguchi