Abstract
The aim of the paper is to present the state of the building erected in the OWT technology. The construction of the building has not been completed due to the financial problems of the late 90's of the XX century. As a result of the long-term environmental impact, the object was degraded due to the lack of a flat roof and windows. The impact of precipitation, wind and biological corrosion led to significant degradation and deterioration of structural elements and joints. The paper will present examples of damage caused by environmental impacts. Examples of damage of wall and floor elements as well the deeply corroded steel plate joints will be presented. Highly grown lichens, mosses or mold will be also presented as the examples of biological interactions onto the surface of constructional elements. Structural elements have been tested in a nondestructive manner using sclerometer tests. The results will be described and the conclusions will be presented. The analyzed object presents in an interesting manner that environmental influences could destructively affect the construction of precast RC structural elements, which constitute a significant percentage of the Polish construction market.
Highlights
World War II led to major damage of housing resources in most cities in Poland
The new systems were developed with the elimination of most of the disadvantages of previously used Large Panel System (LPS) technology [3]
When the first buildings made of precast concrete slab were built in Poland in the 1950’s, the Large Panel System was not a brand new technology
Summary
World War II led to major damage of housing resources in most cities in Poland. People had been looking for better living condition and moved to cities where the industry developed. This led to an increase in the percentage of urban population from 37% to 56% between 1950 and 1975 [1]. The popularity of large-panel housing, despite some of it disadvantages, led to the situation the more than 60% of dwellings in Poland in the 1990’s were located in buildings. After the change of the political system in Poland, the government was open to new technologies which allowed for greater diversification of housing construction systems. The new systems were developed with the elimination of most of the disadvantages of previously used LPS technology [3]
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