Akademik Veri Yönetim Sistemi
ICENS 2023, Sarajevo, Bosna-Hersek, 17 - 21 Mayıs 2023, cilt.1, ss.1-11
During the production process of
mortar many of additives can be used jointly to obtain efficient workability
properties. In this situation strenght of mortar depends on the correct ratio
of admixtures. This study focuses on analysing of mortar samples that have
three different doses of sodium lignosulphonate based plasticizer (%1 -1,5-3)
and calciumnitrate based set accelerator (%0,5-1-2) admixture combinations. The
water-cement ratio is selected as 0.50 for the mortar production. Various
effects in the strenght and durability are investigated by experimental
methods. Scanning electron microscope (SEM) images were obtained at the range
of magnification 500x to 4000x for observations. In the investigation unit
weight, ultrasonic pulse velocity, compressive strenght, setting time tests and
microstructure analysis tests were performed in three different dosage mixtures
and the obtained data were evaluated. As a result of the tests carried out, the
use of the admixtures in different dosages caused decreasement in compressive
strenght maximum 7,27 MPa in 28 day samples. It has been observed that %1
plasticizer and %0,5 accelerator combination which has the minimum doses reach
the highest compressive strenght for 28 days (39,8 MPa). Therefore, as a result
the coexistence of additives must be sensitively controlled and the required
dosage adjustments must be made in production.