UC知道混凝土强度等级，翻译
来源：百度知道 编辑：UC知道 时间：2024/05/01 20:28:15
采用标准试块(规范规定边长为150mm 的混凝土立方体)，在标准条件下(温度为20℃±3℃，相对湿度在90%以上)养护28天，按规定的标准试验方法(中心加载，平均速度为0.3～0.8MPa/s，试件上下表面不涂润滑剂)测得的具有95%保证率的抗压强度称为混凝土立方体抗压强度。，混凝土强度等级按立方体抗压强度标准值确定，用符号fcuk 表示，共14 个等级，其中，C50及C50 以上为高强混凝土。
急！！！
The use of standard test block (normative provisions of the edge length of 150mm concrete cube), in standard conditions (temperature of 20 ℃ ± 3 ℃, relative humidity of 90% or more) the conservation of 28 days, according to the provisions of the standard test method (load center , average speed of 0.3 ~ 0.8MPa / s, sample lubricant coated surface from top to bottom) measured with a 95% guarantee that the rate of compressive strength as the compressive strength of concrete cube. , Concrete strength grade in accordance with standard values to determine the cube compressive strength, using symbols fcuk said that a total of 14 levels, of which, C50 and C50 high-strength concrete above.
By cubic compressive strength here we mean a term for a compressive strength value with 95% of guarantee rate measured by standard test method ( loaded in center at loading speed of 0.3～0.8MPa/s,with no lubricant on the top surface or under the bottom surface of specimen) which uses standard blocks