*3.1. Workability*

Figure 6 shows the flow table test and the flow table test results are presented in Table 4. The flow table test values were determined by averaging the diameters of each mixes test. All mixes showed flow values in the range of 140–215 mm, without segregation or bleeding. The results revealed that addition of EGA increased the workability of cement mortar up to 26.6% and 41.25% for the E50 and E100 mixes respectively compared to the control mix (CS). The increment trend in workability despite the decreasing on the amount of superplasticizer in E50 and E100 mixes is contributed to the smooth surface and spherical shape of EGA [40–42]. Adding to this, the increase in the flow values can be due to the increase in the amount of entrapped air voids. Furthermore, the workability of CT, E50T, and E100T mixes increased by 5.35%, 30.4%, and 53.7% respectively in comparison to the CS, E50, and E100 mixes respectively, which is attributed to the induction of the microbubble in the water solution during the sonication process and consequently increased in small air voids in the mixes.


**Table 4.** Flow results of mixes.

**Figure 6.** Flow table test.
