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常用材料强度等级的代号,以材料的代号(一个或两个大写正体拉丁字母)和规定的材料强度值(以牛/毫米~2或兆帕计)表示。1.混凝土:普通混凝土代号为 C,例如 C30,涵义为立方体抗压强度标准值为30兆帕的混凝土强度等级;轻骨料混凝土代号为 CL,例如 CL20,涵义为立方体抗压强度标准值为20兆帕的轻骨料混凝土强度等级。2.块体砂浆:块体代号为 MU,例如 MU10,涵义为抗压强度平均值为10兆帕的砖、石、
Codes for commonly used material strength grades, expressed as the code of the material (one or two uppercase letters in Latin) and the specified material strength values (in N/mm~2 or megapascal). 1. Concrete: Ordinary concrete code C, such as C30, meaning the concrete strength level of the cube compressive strength standard value of 30 MPa; light aggregate concrete code CL, such as CL20, the meaning is the cube compressive strength standard value 20 MPa light-weight aggregate concrete strength grade. 2. Bulk mortar: The block code is MU, such as MU10, meaning bricks, stones, and the average compressive strength of 10 MPa.