## 1 Introduction  
The existing challenges in the construction industry mainly include increasing the speed of the construction process, increasing the useful lifetime of buildings, retrofitting, cost reduction, reducing thermal and acoustic conductivity, reducing the weight of the building, and environmental issues. Efforts to meet these needs led to the invention of autoclaved aerated concrete (AAC) products. AAC is a relatively modern material with a favorable strength-to-density ratio, thermal insulation properties, and other advantages such as lightness, fire resistance, and ease of cutting and application [1, 2, 3]. Today, AAC is widely used in the United States, Europe, and many other countries [4]. These materials are considered environmentally friendly construction materials [5]. AAC products are commonly made of cement, water, lime, silica-based materials (silica sand, ash, or silica fume), porosity-generating materials (aluminum powder), and additives [6]. During their service life, buildings may be exposed to several dynamic load conditions, such as earthquakes, explosions, impacts, and wind loads. Explosions caused by terrorist attacks or accidental incidents in urban areas can cause severe human and financial losses. Blast loading experiments and strengthening the structures to reduce the damage caused by explosions are among the most critical topics for researchers and structural engineers [7, 8, 9, 10]. In this regard, multiple studies have modeled the effect of blasts on various building materials and structures. Previous studies on the behavior of structural and nonstructural components made of AAC materials were limited to static loading conditions [11]. A small number of studieshave considered the seismic or impulse load conditions. [PERSON] and [PERSON] [12] tested AAC exterior walls under impact loading and evaluated the damages patterns [12]. [PERSON] et al. [13; 14] conducted extensive studies on shear walls made of AAC; many of the requirements of ACI regulations on AAC materials [15] are derived from their research. [PERSON] et al. [16] introduced a new type of sandwich panel using AAC and FRP composite materials. The behavior of the panel was evaluated under low-speed impulse tests [16]. According to the results, the failure patterns and energy absorption of AAC-FRP panels were improved compared to simple AAC units. Moreover, [PERSON] and [PERSON] [17] performed compressive, tensile, and shear strength tests on masonry walls made of AAC blocks. They also tested several reduced-scale structures with AAC walls on the shaking table [17]. In a study conducted by [PERSON] et al. [18], the behavior of AAC blocks under severe impulse loads was analyzed. They also investigated the ballistic limit velocity of AAC targets under the influence of rigid projectiles. The results showed that the introduced analytical model was in good agreement with the experimental results [18]. TM 5-855-1 [19] can be considered as one of the first instructions provided for nonatomic explosion-resistant structures. In addition, TM 5-1300 [20] instruction was widely used to design explosion-proof structures; TM 5-1300 was more comprehensive than TM 5-855-1 and based on many subsequent theoretical studies. Finally, UFC 3-340-02 [21] guidelines, as an updated version of TM 5-1300, were developed by the US Department of Defense (DOD) and have been widely used as the primary basis for design and research works in this area. Historically, some studies were conducted on the behavior of masonry building materials under blast loading. In a series of studies, [PERSON] and [PERSON] [22] and [PERSON] and [PERSON] [23] investigated the effect of infilled walls on RC building behavior under explosion loading. Using explicit finite element modeling in LS-DYNA hydrocode, [PERSON] and [PERSON] [24] reported that increasing the masonry wall thickness reduces the explosion damage to the buildings. In an experimental study, [PERSON] et al. [25] tested a cantilever masonry wall consisting of clay bricks under blast loads.