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  1. 1 Ochrona Zabytków

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  1. 1 Majdowski A.

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  1. 1 1983

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Zastosowanie metod iniekcyjnych w praktyce budowlano-konserwatorskiej

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Majdowski A.
Ochrona Zabytków
|
1983
|
issue 3-4
237-242
EN
Injection is a technique consisting in the forcing into the inside of the brick wall of special pastes or mortars (injects) which join delaminated surfaces and bond them permanently with the old brick and mortar. This technique may, in particular, be employed to repair craks and to fill up emply spaces in the wall. Tn comparison with re-erections traditionally used in such cases, injection is a more economic technique with regard to material and labour consumption. All problems connected with the strengthening of a building should be first worked out in technical documentation based on an examination of the wall structure and building consumption. Research works should establish causes of destruction and give a full description of structural changes in the wall. The drawing of a technical layout comes to the solution of the following problems: a) mode and order of introducing an inject, b) components, durability and consistence of the inject, c) pressure of the inject introduced, d) technique of cleansing scratches and filling up the outside face of cracks. A classification of injection techniques is based on the mode of introducing the paste and is divided into a) gravitional incjection, to) vacuum incjection, and c) pressure injection. A technique of pressure injection is most universal, and its most important advantages are: a) a possibility to have an unrestricted control of pressure, b) filling up of craks irrespective of the direction of their course and width, c) introduction of the inject both in the surface layers of the wall and inside its cross-section. From a technological point of view the work done in this way can be divided into the fallowing stages: a) preparation of pockets for injectors, b) cleansing of cracks, c) sealing of cracks on the facing surface of the wall, d) introduction of the inject.
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