Abstract
Soil-water characteristic curves (SWCC) are an important properties of unsaturated soil, but the technology used to obtain them has severe constraints, including time, effort, and cost.In this study, a newsensor based polyacrylamide (PAM) polymer sensing technology is developed for measuring soil suction using osmotic pressure rather than capillary pressure.The soil sample from Astana, classified as clayey sand was used for validation of the developed polymer sensor.Tempe Cell was used to assess the performance of the measured data from this new polymer sensor.Since the current developed sensor is only applicable from low to middle suction region, the entire SWCC was created with the help of conventional unsaturated devices such as Tempe Cell for low suction area and WP4C for high suction area.However, it has been demonstrated that the sensor can be used as an alternative device for rapid measurement of SWCC.