The processing, properties and optimum mix of fly ash based - self compacting geopolymer concrete

Abstract

The development of concrete technology toward environmentally friendly concrete has become increasingly interest area. The production of Portland cement has a significant impact on greenhouse emissions. The fact triggers the research and the development of eco-friendly concrete, one of which is geopolymer concrete. The implementation of concrete casting sometimes faces the construction that requires the casting process without vibration. It is then when the self-compacting concrete technology was developed. Concerning the two main issues of eco-friendly self-compacting concrete mention above, fly ash based-self compacting Geopolymer concrete has become a research study and develops in the last decades. This paper identifies the process, properties, an optimum mix of fly ash-based self-compacting geopolymer concrete. The properties in this research are the workability of fresh concrete and compressive strength at 7 days. Compressive strength is reported with several NaOH molarities, Alkaline to fly ash ratio, curing time, Curing temperature, Superplasticizer, and Extra Water. Examination of the workability is done with a slump flow test, V-Funnel test, and L-Shape box test. The result shows the optimum mix of fly ash based self-compacting geopolymer concrete.