Wyniki wyszukiwania - BazTech

Ograniczanie wyników

1 2020

Znaleziono wyników: 1

Liczba wyników na stronie

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: dodatki rozszerzające

Sortuj według:

Ogranicz wyniki do:

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.