Feasibility of Utilize Sidoarjo Mud as Replacement Material in Fly Ash Based Geopolymer Binder

International Conference on Science and Innovated Engineering

工业技术（总论）;自然科学（总论）

Syukri^1 ; Fauzi, Amir^1 ; Majuar, Edi^1 ; Mulizar^1

Civil Engineering Department, Politeknik Negeri Lhokseumawe, Buketrata-Lhokseumawe

24375, Indonesia^1

关键词: Alternative source;    Geopolymer binders;    Geopolymer mortars;    Irregular shape;    Natural disasters;    Particle properties;    Replacement materials;    Source material;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/536/1/012030/pdf
DOI  :  10.1088/1757-899X/536/1/012030

来源: IOP

【 摘 要 】

Sidoarjo mudflow (SM) is an alternative source material in the construction which was generated from natural disasters of volcano mudflow in Porong, Sidoarjo, East Java, Indonesia. The source material of SM has high Si and Al content that contributed to geopolymer binder. Yet, it was categorized as low Ca content that caused prolong setting time in the geopolymer binder. This study aimed to increase the Ca content by incorporating the source material of SM in FA based geopolymer so that was able to provide short setting time in the field. The results showed that the particle properties of SM material were agglomerate irregular shape and rough surface. The increase of SM replacement caused the reduction of workability in fresh geopolymer mortar. Replacement of 40% SM in FA based geopolymer provided the short setting time less than 2.5 hours. The replacement of 15% SM in FA based geopolymer enhanced the compressive strength of 7.6%. However, the highest compressive strength of 9.4% was obtained by the replacement of 10% SM.