2.3.2. Squeeze Flow

The technological analysis using the squeeze flow methodology was carried out according to ABNT NM 15839 [25], using a universal testing machine EMIC 26–30 with a capacity of 30 kN. However, for the execution of this study, a maximum load of 1 kN was used, as recommended. After preparation, the mortars were spread and poured into a cylindrical metal mold with a diameter of 100 mm and a height of 10 mm on an inflexible base made of stainless steel. *Sustainability* **2022**, *14*, x FOR PEER REVIEW 6 of 26 The squeeze flow test basically consists of the dynamic analysis of a material compressed by two horizontally parallel plates, thus obtaining a radial expansion of the

> The squeeze flow test basically consists of the dynamic analysis of a material compressed by two horizontally parallel plates, thus obtaining a radial expansion of the compressed material. compressed material. The data obtained from the squeeze flow method can be interpreted according to the

> The data obtained from the squeeze flow method can be interpreted according to the 3 phases of behavior that the material can present. The first phase corresponds to the linear elastic behavior (I), the second describes the plastic behavior, also defined as viscous flow (II) and the third phase is known as hardening (III) [26]. The three aforementioned phases, when analyzed according to the force versus displacement relationship, present their behaviors described by exponential curves, as illustrated in Figure 3. 3 phases of behavior that the material can present. The first phase corresponds to the linear elastic behavior (I), the second describes the plastic behavior, also defined as viscous flow (II) and the third phase is known as hardening (III) [26]. The three aforementioned phases, when analyzed according to the force versus displacement relationship, present their behaviors described by exponential curves, as illustrated in Figure 3.

**Figure 3.** Observed phases according to the force versus displacement curve by the squeeze flow test [27]. **Figure 3.** Observed phases according to the force versus displacement curve by the squeeze flow test [27].
