A Laboratory Investigation of Soil Stabilization Using Enzyme and Alkali-Activated Ground Granulated Blast-Furnace Slag

Addition of fly ash is one method to stabilize soil because fly ash is a pozzolan that can bind to minerals in soil and make the soil stable.

“The addition of fly ash is one of the methods to stabilize soil because fly ash is a pozzolan, in which it can bind to minerals in soil and make the soil stable”

Addition of fly ash reduces swell shrinkage of soil and improves soil strength.

“so as to reduce the swell shrinkage of the soil and improve soil strength [41,42,44,46,54,69,70,71,72,73].”

Thomas et al. strength results do not fulfill ASTM D 4609.

“However, the strength results do not fulfill the ASTM D 4609 [76] standard soil stabilization criteria for road construction applications.”

Thomas et al. found optimal dosage for GGBFS can be set as 20% based on strength.

“The optimal dosage for GGBFS can be set as 20% based on the strength.”

In soil stabilization-based geopolymer, fly ash Class C and GGBFS are used as primary source material containing mostly high content in Si and Al that dissolve in alkali solution for geopolymerization.

“Commonly, in soil stabilization-based geopolymer, fly ash Class C and GGBFS are used as the primary source material containing mostly high content in silica (Si) and alumina (Al) that dissolve in alkali solution for geopolymerization in soil stabilization application [51,65,72,73,74].”