WATERPROOFING COMPOUND FOR PROTECTION OF CONCRETE STRUCTURES Russian patent published in 2020 - IPC C04B41/63 C04B41/65 C04B28/04 C04B111/27 

FIELD: construction.

SUBSTANCE: invention relates to construction, in particular to compositions for waterproofing surfaces of underground and ground parts of structures, buildings and structures with high cracking, subjected to settling and vibrations, prefabricated structures subjected to deformations, concrete structures, buildings and constructions subject to dynamic loads and high hydraulic pressure. Waterproofing composition for protection of concrete structures contains, wt. %: portland cement PPC 500D0N 20–25; alumina cement of grade GC-40 3–10; sand of quartz brand PB-150 40–60; Peshelansky gypsum G-16 1–2; microcalcite mineral filler 1–2; polymer additive in form of redispersible powder Vinnapas 7055E 5–25; powdered anti-foaming agent Vinapor 9010F 0.4–0.6; superplasticiser Melment F-10 0.1–0.2; polymer Mecellose FMC2070 0.1–0.2; modifying additive 0–3. Modifying additive used can be tartaric acid in amount of 0–0.02 wt. %, or polymer additive in form of re-dispersible powder Vinnapas 4042H in amount of 0–2 wt. %, or cellulose binder Technocel 1004-7N in amount of 0–3 wt. %.

EFFECT: technical result is high adhesion strength of waterproofing composition with concrete base, water-resistance, crack resistance, corrosion resistance of concrete and reinforced concrete structures to liquid and gaseous aggressive media, frost resistance of protected structures, longer durability of structures.

5 cl, 4 ex