The effect of different water/solid (W/S) ratios on the properties of normal weight concrete/light fly ash and alkali-activated slag were studied. The relative performance of mixtures of AAC with limestone and lightweight fly ash aggregates as coarse aggregates was also compared with conventional concrete with ordinary Portland cement (OPC) in terms of strength, deformability, and fracture behavior. The results showed that AAC has higher tensile strength, brittleness, and lower modulus than its cement-based counterpart. As the W/S ratio decreases, the density, strength, and elastic modulus of AAC increase. However, the influence of the W/S ratio on the mechanical properties of LAAC with lightweight porous aggregates was less than that of heavy AAC [18; 19]. Physical properties of alkali-activated materials (AAMs) were investigated in [20; 21; 22; 23]. It has been found that the alkali content is often considered the main characteristic of alkali-activated materials. However, the SiO\({}_{2}\) content can also play an important role. The results of these works show that the strengths of AAMs are highly dependent on the type of hardening. For example, curing in an aqueous medium reduced the strength of the samples compared to the models covered with foil. Furthermore, physical properties depend on the curing method and the activator's composition; some concretes with high strength showed very low frost resistance [20; 21; 22; 23]. Mechanical properties and durability of alkali-activated carbon slag concrete were carried out in [24; 25; 26; 27]. In this case, the new geopolymer is recognized as a potential alternative cementitious material to OPC, which is used to reduce carbon emissions and efficiently treat waste. Therefore, work [21] mainly studies alkali-activated carbon-slag concrete (ACSC) prepared using coal and a complex activator Na\({}_{2}\)SiO\({}_{3}\) and NaOH. The results show that ACSC showed high compressive strength at an early age, and the degree of compactness and structure uniformity was better compared to OPC when the coal rock replacement ratio was less than 50% [24; 25; 26; 27]. In [28], the effect of water content on the mechanical strength and microstructure of alkali-activated FA/ground granulated blast furnace slag (GGBFS), solidifying in cold and polar regions, was investigated. The effect of water content on the properties of an alkali-activated binder solution cured at \(-5\,^{\circ}\mathrm{C}\) was investigated. FA and GGBFS were used as binders. The results showed that lower water content is beneficial for improving the early strength of the mortar at a curing temperature of \(-5\,^{\circ}\mathrm{C}\), while it has little effect on long-term strength. These results are relevant for the design and construction of geopolymer concretes in cold regions [28]. Characteristics of concrete, reinforced with steel fibers, activated with alkali, slag, and FA, containing secondary aggregates from recycled concrete and sand are given in [29]. This study evaluated the performance of alkali-activated slag and FA concrete made from recycled concrete aggregates (RCA) and reinforced with steel fibers [29]. In [30], the strength of a building material containing an alkali-activated lightweight aggregate based on fly ash, was calculated. In addition, this study examined the durability of a mortar consisting of LWA activated alkaline ash and LWA expanded clay (EC). The mortar used by FA 6M LWA has comparable water absorption capillary resistance of the chlorides to the EC LWA reference mortar [30]. The work [31] presents the ultrasonic strength of cement mixtures activated with alkalis. In this study, the change in setting time and strength of AAC blends was studied using the ultrasonic method. The effect of binder content, ratio of alkaline solid to binder (AS/B), ratio of sodium silicate to solid sodium hydroxide (SS/SH), and ratio of total water to total solid binder (TW/TS) on strength and setting time are also considered [31].