In Sections 4 and 5 of the Mayan Train (Tren Maya), covering Izamal – Cancún and Playa del Carmen – Tulum, a high level of geotechnical risk was identified due to the karstic nature of the soil, a characteristic found in 95% of the state of Yucatán. This condition is generated by the dissolution of limestone rocks caused by slightly acidic waters (water + CO
2
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), which led to the presence of voids in the foundation of the railway embankment. To mitigate these risks, the decision was made to fill isolated voids with fluid concrete, over which an RX1100T biaxial geogrid was placed, aiming to provide an additional safety factor against differential deformations. Furthermore, to address possible settlements resulting from new voids up to 1.50 m in diameter, a high-modulus TDM2000 uniaxial geotextile, reinforced in the direction of traffic, was installed at the base of the embankments. This solution ensured the stability and durability of the railway system against the geological conditions of the area.

In Sections 4 and 5 of the Mayan Train (Tren Maya), covering Izamal – Cancún and Playa del Carmen – Tulum, a high level of geotechnical risk was identified due to the karstic nature of the soil, a characteristic found in 95% of the state of Yucatán. This condition is generated by the dissolution of limestone rocks caused by slightly acidic waters (water + CO
2
​
), which led to the presence of voids in the foundation of the railway embankment. To mitigate these risks, the decision was made to fill isolated voids with fluid concrete, over which an RX1100T biaxial geogrid was placed, aiming to provide an additional safety factor against differential deformations. Furthermore, to address possible settlements resulting from new voids up to 1.50 m in diameter, a high-modulus TDM2000 uniaxial geotextile, reinforced in the direction of traffic, was installed at the base of the embankments. This solution ensured the stability and durability of the railway system against the geological conditions of the area.