Application of bitumen slurry for capital construction facility repair

The necessity of research is determined by the high cost and short service life of materials for repair of roofs of capital construction objects. The research was carried out based on patent search and assessment of the achieved scientific and technical level of the topic development according to the directions of the selected patent codes of the international classification of inventions. The article shows that the effective material for roof repair is bitumen slurry. It was also found that the most effective way to repair the roof is the work execution during rain. Deep bulk failures were first filled with crushed stone of 5–10 mm fraction, which was soaked in cut-back bitumen slurry, then a layer of plastic slurry was applied with an applicator. Cracks up to 15 mm wide were filled by pouring liquefied bitumen slurry. The results of the roof repair of the road company after six months were successful. The roof of the road company is in a dried out condition. The cost of repair was 1 thousand rubles. It was confirmed that bitumen slurry in conditions excluding water removal from it (packed in hermetically sealed containers) for a long time (up to several decades) retains technological and functional properties, and can be applied to wet and dusty covering. Before use, bitumen slurry is mixed with water to the required consistency (from viscoplastic to fluid). Depending on the volume and availability of machinery, different mixing methods can be used. The arrangement of roof coverings on the basis of mastic waterproofing materials allows to exclude completely or partially the use of scarce roll materials, hot bituminous mastics, to mechanise roofing works, to reduce the labour intensity of works in 2,5–3 times and more, to increase the roofing works culture, to improve working conditions, to radically reduce fire hazard.