A plastic concrete test mold is a precision mold specially designed for producing standard test blocks of construction materials such as concrete and mortar. It is widely used in engineering construction tests—including those conducted on highways, railways, construction sites, and commercial concrete mixing plants—as well as in fields such as construction quality supervision, scientific research at colleges and universities, and water conservancy projects. Its primary function is to detect key physical properties of materials, including compressive strength, flexural performance, and impermeability, through the formation of standardized test blocks, thereby evaluating the safety and durability of engineering structures. Compared with traditional cast iron test molds, plastic test molds offer advantages such as lightweight design, elimination of complex mold assembly and disassembly procedures, resistance to resistant to high and low temperatures.