Preparation of hydrogel from Carbopol 940 and its use in soil cohesion of gypsum soil

Abstract

The hydrogel was prepared from Carbopol 940 by dissolving 4 grams in one liter of distilled water with gentle mechanical stirring and leaving it for 72 hours. Diluted concentrations of (0.1%, 0.5%, 1%) were prepared and diluted in 500 mL volumetric flasks and left for 24 hours. After that, the pH was adjusted using ammonium hydroxide and hydrochloric acid, with four pH values being used (2, 4, 6, 8). The hydrogel was then characterized using infrared spectroscopy. Subsequently, it was mixed with soil at different ratios (90/10, 70/30, 60/40).