| Abstrakt: |
In nature, clayey soils are often costly. Because of its low shear strength, construction of any structure or pavement on such soils causes settling and functional failure. There are a variety of methods for stabilizing clayey soils, but mechanical and chemical stabilization play a key part in increasing their strength qualities. As a result, the clay soil is combined with Fly ash, and NaOH is added as a stabilizer to improve shear strength. Alkali activates fly ash to produce geopolymer, which increases the link between soil particles and the soil's durability. The goal of this project is to improve compressive strength and consequently shear strength by mixing ten percent fly ash with eight percent, ten percent, and twelve percent by weight of sodium hydroxide (NaOH) with normalities of two and four. For 0, 7, 14, and 28 days, the findings of unconfined compressive strength (UCS) are monitored and compared. We found from the laboratory study that increasing the proportion of NaOH causes an increase in MDD and UCS. This is attained at a concentration of 8-10% NaOH, but by increasing the concentration to 10-12% NaOH, the MDD and UCS were reduced. As a result of the findings, the soil has been stabilized, and 4N has gained increased strength at an 8% NaOH concentration. When the percentage of NaOH is greater than 8, the strength is reduced. [ABSTRACT FROM AUTHOR] |
