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Multivariate façade strengthening systems of textured layers in large slab panel buildings

Tomaszewicz Dariusz, Budrevich Neli

Inżynieria Bezpieczeństwa Obiektów Antropogenicznych

2021

Nr 3

21--36

This article presents the solutions of bonded anchors used to strengthen façade textured layers in the walls of three-layer large slab panel buildings in Poland. Large slab panel building systems that are found in Poland have been characterized. The use of new bonded anchors is preceded by diagnostics of the walls of three-layer large slab panel buildings. The author presents two-stage diagnostics: non-destructive methods, measurement of reinforcement parameters and its condition using a Profometer type device, and destructive methods by performing an opencast with a drilling rig. A review of previously used bonded anchorages in Poland was carried out. Proposals for the use of anchor groups in various configurations with different angles of inclination of the diagonal anchors were also presented in order to achieve the most durable effect possible.

Effect of calcium sulfoaluminate additive on linear deformation at different humidity and strength of cement mortars

Abdulwahid Al-Musawi Kadhim, Bindhu Abraham Kottayil, Potses Tatsiana, Leonovich Sergey, Kalinouskaya Natallia, Beulah M., Budrevich Neli

Inżynieria Bezpieczeństwa Obiektów Antropogenicznych

2020

Nr 2

1--9

The effect of calcium sulfoaluminate additives (CSA) on the compression and bending strength of mortar, as well as linear deformation of prism samples at different environmental humidity was studied. Test results indicate that bending strength of mortars with CSA and the referent at the age of 28 days are practically equal. Compressive strength of mortars with CSA reduced by 20 ... 23% for all dosages of CSA. Relative linear deformations depend on the humidity of the environment. At a humidity of 100%, the relative linear deformations are positive and the expansion increases with increasing dosage of the expanding additive. When hardening in dry air at a humidity of 55%, the greatest shrinkage deformations were for mortars with CSA. We can conclude that the expanding effect of CSA is fully manifested at high humidity, i.e. under construction conditions, this means very high-quality moisture care for concrete structures.