THE UTILIZATION OF SUKROSA AND CELLULOSA IN THE MAKING OF FLY ASH C CLASS-BASED GEOPOLYMER CONCRETE

• Main Author: Ghorizatulloh Alburhani, Ali
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/43587
• Institution: Institut Teknologi Bandung

In term making concrete, geopolymer is an alternative material that can be used instead of using cement. Geopolymer is formed from the results of the synthesis of inorganic natural materials through the polymerization process. Geopolymer use natural or waste materials such as metakaolin, fly ash and slag that can be reduce CO2 gas. Geopolymer based on C class fly ash is rarely used because of its high CaO content. In this research, geopolymer based on class C fly ash incorporated with nickel slag mixed with sucrose and cellulose fiber that activated by using a high alkaline activator solution. Geopolymer made were given variations by adding percentage of cellulose, water and sucrose. The samples were tested use compressive strength, three point bending and porosity to determine the mechanical strength and porosity formed from the sample. Characterization of geopolymer samples using FTIR as fact of geopolymer functional groups in the sample. In this research, the maximum strength was found in the sample with the addition of sucrose 2% fly ash. The compressive strength of the sample is 21.12 MPa and the flexural strength is 3.43 MPa. The outline relationship between water content and the percentage of cellulose with the mechanical strength of geopolymer samples is the higher the water content and cellulose, the lower the mechanical strength produced. The higher the water content, the greater the porosity formed. Conversely the higher of percentage cellulose, porosity can be small. Meanwhile, the addition of sucrose 2% fly ash can be increase mechanical strength and increase the porosity formed.