Garuda - Garba Rujukan Digital

Ndaru Candra Sukmana

Universitas Internasional Semen Indonesia

Author-ID : 3017199

Chemical Engineering, Chemistry & Bioengineering Energy

Published : 2 Documents Claim Missing Document

Claim Missing Document

Articles

Penerapan Metode Taguchi pada Perancangan Eksperimen Beton Geopolimer Berbasis Abu Layang ufafa anggarini; Claudia Kosada; Ndaru Candra Sukmana
CHEMICA: Jurnal Teknik Kimia Vol 4, No 1 (2017): Juni 2017
Publisher : Universitas Ahmad Dahlan

PT Petrokima Gresik produces fly ash from coal burning about 8048,89 tons in 2015. In general, one ton of coal burning can produce around 0.15 to 0.17 tons of fly ash waste. Fly ash waste can be utilized as a mixture where the main elements of fly ash are aluminum and silica, fulfilling criteria as the material having cement and geopolymer properties. Geopolymer preparation can be done by the sol-gel method at low temperature, where the emission of CO2 gas produced is a minimum amount. The problem faced is finding the right composition of geopolymer so that it produces the maximum compressive strength. One way is by designing a Taguchi experiment. The choice of the Taguchi method is based on the advantages of this method that can combine experimental results through controlled factors and optimal levels so it can achieve the maximum compressive strength of geopolymer. This research used 3 levels (-1,0,1) and 4 factors of fly ash, the solid/liquid ratio (SL), the molarity of NaOH (A), Sand/pasta geopolymer ratio (P/PG). Anova test showed significant effect on compressive strength of fly ash, S / L and A with value of 12,27> 2,90; 61,12> 2,90; 19,477> 2,90. While the value for P / PG is 1.92 <2.90 where the value of F-statistic is less than F table which means P / PG does not significantly affect the compressive strength of Geopolymer. With S/N higher is better to know the optimum composition of fly ash, S / L, A and P / PG equal to: 370 gram; 2.33 (70:30); 9 Molar, and 1.5. The prediction of Geopolymer maximum compressive strength with Taguchi method was obtained 18,71 Mpa.Â Keywords: Â Fly ash, Optimation, Taguchi, Geopolymer

Penentuan Komposisi Optimum Pembuatan Paving Block Berbahan Pasir Silika Proses Sand Blasting dengan Metode Taguchi ndaru candra sukmana; Dedy Eko Prasetyono; ufafa anggraini
CHEMICA: Jurnal Teknik Kimia Vol 4, No 1 (2017): Juni 2017
Publisher : Universitas Ahmad Dahlan

Sandblasting process by using silica sand will produce waste of silica sand at least 70%. Engineering Procurement and Construction (EPC) Industry produces a waste of untreated and unused sandblasting sand silica from sandblasting process. Silica sand waste sandblasting process is a dangerous waste. On the other hand development in Indonesia will increase. It takes a large amount of raw materials to meet development needs. One of the raw materials is paving block. Silica sand waste can be utilized as an alternative material for making paving block. In this research, the experiment design used is Taguchi method. The Taguchi method is used to determine the effect of silica sand waste and the optimum composition on the paving block to produce maximum compressive strength value. The results of this study indicate that silica sand waste hasnâ€™t an significant effect on the compressive strength of paving block and the optimum composition is 1.1 kg of cement, 2.5 kg of sand, and 2 kg of silica sand which produce a compressive strength of 21,56 MPa. The compressive strength is compliant with paving block SNI-03-0691-1996 on the classification of B quality that is with a minimum compressive strength of 17.0 MPa.Keywords: Â sandblasting wate, paving block, taguchi method

Title

Found 2 Documents
Search

Abstract

Abstract

Title Search

Found 2 Documents Search

Abstract

Abstract

Title

Found 2 Documents
Search