Mystery of the “liquid cement” in Kypseli solved: It is a special foam with chemicals, explains Metro company

The enigma surrounding the worldly that resembled liquid cement and flooded streets successful Kypseli has been resolved by Elliniko Metro S.A., clarifying that it is ungraded slurry related to the operation works of Metro Line 4 and not a cement leak.

According to the company, during passageway excavation utilizing a TBM (tunnel boring machine), a peculiar foam with chemic additives is injected nether controlled pressure. This foam is utilized to equilibrium crushed unit and support overlying structures.

In the lawsuit of Kypseli, the substance of excavated worldly and foam escaped done an aged sewage pipe. It initially ended up successful the gait of an abandoned gathering and past spilled into surrounding streets, creating an representation that alarmed residents.

Disruption and postulation interruption

The incidental occurred connected Wednesday day (15/04), astir 16:00, erstwhile residents of the country saw the worldly continuously flowing retired from the gait of the building.

Within a abbreviated time, the slurry dispersed onto the roadway, covering parts of streets and causing superior postulation disruptions.

The Traffic Police proceeded to adjacent postulation connected Sofadon, Skyrou, and Evias streets, arsenic the measurement of the worldly made conveyance transition impossible. In immoderate places, the slurry tallness exceeded 60 centimeters, adjacent covering the wheels of parked motorcycles.

The contractor consortium of the task instantly carried retired removal and cleaning operations successful the area.

As stated successful the Elliniko Metro announcement, the improvement is not linked to immoderate information contented nor does it origin imperishable pollution.

At the aforesaid time, it is clarified that the passageway excavation successful this conception of Line 4 has already been completed, with nary subsidence oregon different structural issues recorded successful the area.

The authoritative mentation by the institution comes to reassure residents aft the beardown interest caused by the incident.

Statement by Elliniko Metro S.A.

Regarding the leakage of ungraded slurry successful streets of Kypseli, Elliniko Metro S.A. issues the pursuing update:

“During excavation works with a TBM (tunnel boring machine) for the operation of the Line 4 tunnel, astatine the excavation face, foam composed of peculiar chemic additives is injected nether controlled pressure, chiefly for information reasons regarding overlying structures, successful bid to equilibrium crushed pressure. In this way, and without immoderate subsidence occurring, the tunneling of the conception betwixt Katechaki and Evangelismos stations has already been completed.

In the Kypseli area, earlier today, leakage was observed done an aged sewage tube of ungraded slurry, meaning a substance of the excavated worldly itself with injected pressurized foam, which ended up successful the gait of an abandoned gathering and subsequently successful adjacent streets.

The contractor consortium has already proceeded with removal of the worldly and cleaning of the area. This incidental does not make immoderate information contented oregon imperishable pollution.”