Waste Tire Textile Fibers (WTTFs), waste materials derived from scrap tires, have been used to enhance the mechanical properties of Rammed Earth (RE) and Cement-Stabilized Rammed Earth (CSRE) structures. To do so, standard compaction, Unconfined Compressive Strength (UCS), Split Tensile Strength (STS), and Flexural Bending Strength (FBS) tests were conducted on plain, Cement-Stabilized (CS), Fiber-Reinforced (FR), and Cement-stabilized Fiber-reinforced (CSFR) RE elements. Both FR and CSFR samples have shown favorable behavior. Therefore, based on the project specifications, it is concluded that WTTFs can be used with and without cement-stabilization to improve the brittle and relatively weak behavior of RE structures. (C) 2020 Elsevier Ltd. All rights reserved.