## 1 Introduction  
One of the most important properties required of materials used in the civil and construction industries is durability [1]. Durability is defined as the ability of a material to endure environmental loads without deformation of form or alteration of characteristics. Because of the high early durability of polymer concrete--which is a result of its fast curing properties--as well as its high strength and chemical resistance, it is used in a wide variety of industries beyond just the construction industry [2; 3; 4]. The polysulfide epoxy resin-based concrete used in this study (hereinafter referred to as \"polysulfide polymer concrete\") has a high strength and good resistance to wear, sliding, and UV rays [5; 6; 7; 8]. It is frequently used for restoring bridge decks, constructing floors, and paving roads; in such overlay applications, this material is useful because it prevents the permeation of moisture, chlorides, and corrosive materials through the overlays [9; 10]. Furthermore, the wide surface areas of the aggregates used in polymer concrete result in an increase in sliding friction, which, in turn, enhances the safety of vehicles and their passengers when it is used as a pavement [11; 12]. Polysulfide polymer concrete is also known to exhibit high resistance to oxidation, a property to which its stability under long-term exposure to UV rays and resistance to unexpected (premature) material failure is attributed [13; 14; 15]. As with any other chemical reaction, the processes determining the mechanical properties of polymer concrete systems are dependent on temperature [16; 17]. When such systems are heated to high temperatures, the reaction elements do not have time to mix properly and the reaction occurs too rapidly to be of any practical use. Conversely, at low temperatures, the reaction occurs too gradually, which also inhibits proper curing of the systems. Therefore, the temperatures to which polymer concrete systems are exposed during the curing process are the key factors governing their behaviors and lifespans [18]. Newly laid polymer concrete is exposed to various outdoor conditions during its curing period, depending on the season and environmental conditions [19; 20; 21]. During all seasons except winter, the temperature on the surface of a material may fluctuate between values below the freezing temperature up to 80 \({}^{\circ}\)C, depending on the location, extent of exposure to direct sunlight, and color of the material. A major drawback of polymeric materials is that they are extremely sensitive to curing temperature [22]. In other words, the mechanical properties of polymers can change considerably depending on the temperature in which they are cured. If the temperature of polymer concrete during curing is within the range of its glass transition temperature, its mechanical properties will be more strongly influenced by the applied temperature [23]. Thus, it can be expected that polysulfide polymer concrete, which is a type of polymer concrete, would have a high sensitivity to curing temperature. Extensive research has been conducted to determine the effects of curing conditions on the material properties of other types of polymer concrete [24; 25; 26; 27; 28]; however, few studies have investigated the effects of curing conditions on the mechanical properties of polysulfide polymer concrete. In the present study, a polysulfide polymer concrete composed of a bisphenol A-type epoxy resin and polysulfide liquid polymer as binders and an amine hardener as a curing agent was developed and tested. The effects of curing temperature and curing time on the mechanical properties of the polysulfide polymer concrete specimens, measured as the compressive, flexural, and bond strengths, were then examined. The ranges of curing temperature and curing time considered were \(-\)10-60 \({}^{\circ}\)C and 3-672 h (28 days), respectively.