Steam Cleaning - technology used to clean Ngo Mon Gate of Hue Citadel

Ngo Mon Gate, Hue Citadel is cleaned by high-pressure steam cleaning technology (steam cleaning) to clean the moss layer and return almost the original color of the monument built from 186 years before.

Ngo Mon Gate was built in Hue Citadel in 1833, under the 14th King Minh Mang's time with fortress base wall made of bricks and limestone. Over 186 years of existence, this relic is in a state of harm due to dirt and pollution from the biological development of algae, moss, and loss of beauty of relics.

Hue Gate Gate is in the remodeling stage.

Recently, Hue Monuments Conservation Center - Thua Thien Hue province has cooperated with Karcher, the world's leading provider of cleaning technology to clean up Ngo Mon works in Hue Citadel.

It is known that this project is part of the chain of cultural sponsorship programs of Karcher Group (Germany) in coordination with Hue Monuments Conservation Center. This is the first time Ngo Mon Gate has been cleaned with new technology.

Employees are cleaning Ngo Mon Gate with new technology.

It is known that there have been more than 100 Karcher cleaning projects implemented worldwide. Among them is the project of cleaning the statue of the Redeemer in Rio De Janeiro (Brazil) and Mount Rushmore - National Memorial (USA), Column on St Peter Square - Vatican City, Nihonbashi bridge (Japan ) .

According to experts, to clean Ngo Mon Gate, the unit uses Steam cleaning technology by using a special nozzle to create 0.5-1 bar steam pressure on the limestone surface. .

Unit using technology Steam cleaning to create steam pressure on the limestone surface.

This heating system can produce steam with a maximum temperature of about 100 ° C,

Ngo Mon Hue is completing the final stages of the cleaning project with this new technique.

This heating system can generate steam with a maximum temperature of about 100 ° C, (average temperature of 155 ° C) to completely remove biological contaminants / contaminants as well as kill dirt in below the surface, deeper inside the rock holes due to the high temperature of hot water.

This will also help to slow down the growth of harmful biological layers. Ngo Mon Mon cleaning will be carried out by a team of 14 people, including 2 foreign experts and 6 experts from Hue Monuments Conservation Center.

Ngo Mon monument, the main entrance to the Royal Palace Hue is completing the final stages of the cleaning project by high pressure injection technique in hot steam mode.

The contrast and difference clearly before and after using steam cleaning technology.

The contrast and difference clearly before and after using steam cleaning technology. The surface of the wall retains its strength, clarity and undamaged. Ngo Mon Building has just been "color-dyed" to return the almost original colors of this monument built 186 years ago.

Mr. Phan Thanh Hai - Director of Thua Thien Hue Department of Culture and Information said that the project to clean Ngo Mon Gate is expected to last about 15 days. After completion, it not only contributes to embellishing the landscape and complete heritage space in Hue Citadel Complex, creating a new point to attract visitors, but also demonstrating Karcher's commitment to supporting the preservation of long-standing cultural heritage in Vietnam.