Thesis supervisor: Annamária Dudás
Location of studies (in Hungarian): BME Építőanyagok és MagasépítésiTanszék Abbreviation of location of studies: BMEEM
Description of the research topic:
Buildings needed renovation typically have substructural damages at walls and floor sections in contact with the ground, which is a consequence of insufficient waterproofing. Current literature indicates that the estimated average lifetime of sealing and waterproofing is 15-30 years. Given that 90% of the buildings in Hungary are built before 1989, the estimated life cycle of waterproofing has expired, and the majority of buildings are in need of renovation in terms of waterproofing.
The aging, the inappropriate application of waterproofing and the construction defects or changes during the lifetime of a building often cause together the damage in building structures. Heating energy consumption of a building with old structure may be multiple compared to consumption of recent/modern facilities, which can also be a consequence of the higher thermal conductivity values in wet building structures. Energy consumption of construction and operation of buildings is 40 % of the total energy consumption in Hungary. Since the total building stock replacement rate is less than 1 %, reconstruction should be a high rate of construction activity. In case of ground connected structures previously the measurements of moisture content should be made, and based on these data posterior waterproofing system should be designed. After the drying of residual moisture posterior thermal insulation could be constructed.
Main parts and tasks of the topic:
• summarizing of posterior waterproofing techniques, application requirements
• analysis of structural and building constructional damages
• reconstruction versions of the skirting area of typical building constructions, technological and thermal analysis
• hygrothermal analysis of reconstruction variants
• assessments and conclusions based on measurements and thermal simulations
• building energetics calculations
• detailed design of reconstruction methods belongs to the general building modells (residential houses, single standing familiar houses, block of flats).
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