en.Wedoany.com Reported - Spanish building materials company Molins has supplied over 7 million kilograms of mortar for the structural renovation of Madrid Metro Line 6, used to reinforce track infrastructure and improve line performance under continuous operating conditions. The project is part of a comprehensive line modernization program, focusing on renewing track supports—key components that ensure proper load transfer between rails and tunnel structures. The upgrade will enhance system stability, reduce vibrations, and minimize deformation caused by high-intensity use.
Madrid Metro Line 6 is one of the busiest lines in the entire network. The project implementation faces extremely high operational complexity, as work must be carried out in an underground environment during active service. The contractor must combine planned service interruptions with limited nighttime construction hours. This approach balances infrastructure renovation with operational continuity, minimizing impact on daily commutes.
To meet project requirements, Molins supplied two types of fluid structural mortars—Propam Grout 140 HP and Propam Grout 140R—for renewing and anchoring track supports. Propam Grout 140 HP is suitable for operations requiring line interruptions and high mechanical strength; Propam Grout 140R, with its rapid hardening properties, can be applied during maintenance windows, helping ensure infrastructure stability and durability. These materials are transported from the production center to various storage points on site, selected for their performance in scenarios of extremely high operational complexity, contributing to system stability and proper load transfer between track structural components.
Claudio Moral, Director of Engineering Channel Business Development at Molins Building Solutions, stated that participating in a project like the Line 6 renovation allows the company to apply its experience to critical urban transport infrastructure and continue strengthening its presence in high-complexity civil engineering projects. The project is part of the modernization plan promoted by Metro de Madrid, with a total investment of 800 million euros for the comprehensive renovation of Line 6. The program includes installing platform doors, upgrading signaling and communication systems, and deploying 40 new trains. The goal is to prepare the line for future automation, expected to be achieved by 2027, when Line 6 will become the first fully automated line in the network.
