Use of Nopal Mucilage, Chia, and Tara Gum for Stabilizing Liquid Soils

Ponce V.Q.; Bravo S.S.B.; Ascarza T.A.V.; Fernandez M.A.L. · SSRG International Journal of Civil Engineering (2026) · DOI: 10.14445/23488352/ijce-v13i5p115

Resumen

Soil liquefaction is one of the most critical phenomena associated with moderate and severe earthquakes, due to the abrupt loss of strength and stiffness in saturated sands, causing settlement, lateral displacement, and structural failure. Given that conventional stabilizers have environmental limitations, this research evaluated sustainable alternatives based on Nopal Mucilage, Chia Mucilage, and Tara Gum applied to poorly graded Sandy Soil (SP) in the Pilcomayo sector, characterized by a shallow water table and high vulnerability to liquefaction. The soil was classified as poorly graded sand with gravel (SP) af ter granulometric, limit, and compaction tests. Specimens were prepared with this material and treated with biopolymers in different dosages: Nopal Mucilage at 4%, 6%, 8%, 10%, and 12%; Chia Mucilage at 1%, 1.5%, 2%, 2.5%, and 3%; and Tara Gum at 0.2%, 0.3%, 0.4%, 0.5% and 0.6%. After 28 days of curing, static and cyclic triaxial CU tests were performed to eval uate resistance and susceptibility to liquefaction. The results showed that tara gum achieved its best performance at 0.4%, achieving balanced increases in cohesion, friction angle, allowable capacity, and number of cycles to liquefaction, as well as lower pore pressures. Nopal mucilage, particularly at 10%, showed the greatest improvements in static strength, increasing cohesion, and allowable capacity. Chia mucilage, with the best response at 2%, effectively reduced the development of pore pressure under cyclic loads. Overall, the three biopolymers proved to be viable, economical, and eco-efficient natural additives capable of improving the dynamic behavior of sands and reducing their susceptibility to liquefaction.

Instituciones: Universidad Continental