Technoblog

RESTORATION OF HISTORICAL OBJECTS

19.02.2020
297

Palaces, estates, fortresses, castles, churches and other architectural monuments with high historical value are destroyed over time. At the same time, the procedure for their reconstruction and restoration should cause minimal damage to the structure, which is especially difficult to do when it comes to repairing the floor and raising the foundation.

The condition of architectural monuments worsens over time. The appearance of facades and interiors of historical buildings and structures is affected by changes in temperature and humidity of the environment, an increase in air pollution and the natural destruction of materials under the influence of time. Valuable objects of historical and cultural heritage have to be restored and reconstructed regularly, if possible, using modern materials and technologies.

One of the most difficult tasks related to the restoration of historical buildings is the need to repair and raise the foundation and floor of architectural monuments. Over time, the foundations of historical buildings may experience a gradual subsidence, and under the floor, the formation of voids is possible, which lead to the lowering of its individual sections. Such damage threatens not only the emergency condition of the object and its withdrawal from the register of historical heritage structures, but also the complete destruction of the monument. After all, the subsidence of the foundation leads to the appearance of cracks in the walls, and to damage and even destruction of the supporting structures.

Foundation repair and soil reinforcement

Often, it is not possible to complete the elevation of the foundation and floor, as well as to strengthen the soil under the architectural monument without damaging the historical value of the object. First of all, this concerns the traditional technologies of repairing the foundation and raising the floor, where it is envisaged to use heavy construction equipment and carry out excavation and concrete work.

If both the building and the floor of the structure are of historical value and its damage is unacceptable, it is better to use URETEK for the restoration of geopolymer injection technology. The latter not only minimize damage to the historical value of the object, but also save finances compared to traditional restoration methods.

URETEK recovery methodology

To strengthen the soil under the foundation of the architectural monument, as well as to raise the foundation and level the floor, two injection technologies using URETEK geopolymer resins are used. The Deep Injection technique involves making injections to a considerable depth to strengthen the soil and raise the foundation, and Slab Lifting technology involves the introduction of a geopolymer directly under the floor of the lower floor of the building to level it.

Injection is performed by drilling small wells in the soil or pavement along the perimeter of the structure or by making similar holes with a diameter of 8-16 mm in the floor of the first floor. At the same time, the URETEK geopolymer resin injection technique is mobile, compact and does not damage the historical value of the object. Technological openings in the floor are not difficult to close up.

The reconstruction procedure itself is carried out in a short time: URETEK geopolymer material expands and gains strength within 15 minutes after injection. And the movement of the constituent parts of the foundation and floor, which contributes, among other things, to the restoration of cracks in the walls, is controlled in real time using ultra-precise laser levels.

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29-07-2020
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