某现浇楼面板，混凝土设计强度等级为C30，采用泵送混凝土浇筑，现场检测时选取了该楼面板10个测区，弹击楼板底面。回弹仪读数和碳化深度检测值如下表，试计算该构件的现龄期混凝土强度推定值。 构 测 回弹值 碳化深度-|||-件 区 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 (mm)-|||-1 44 42 40 43 42 42 44 46 38 41 43 41 40 42 43 38 1.0,0.5,1.0-|||-2 39 40 41 39 38 46 42 44 40 46 44 42 40 43 43 45-|||-3 42 40 44 42 40 44 38 40 46 39 38 37 41 45 36 37-|||-4 42 40 38 36 38 40 40 42 44 40 42 40 44 42 40 44-|||-5 38 46 45 39 42 40 40 40 36 37 44 43 41 37 44 42-|||-6 41 38 42 44 40 43 44 38 40 42 44 42 40 44 42 42 0.5,0.5,0.0-|||-7 42 41 41 46 42 42 40 40 42 40 40 42 40 42 40 42-|||-8 40 41 37 40 40 38 42 40 40 42 44 42 44 44 43 40-|||-9 44 45 38 44 46 41 40 40 42 37 41 43 41 47 40 39 0.5,0.0,0.0-|||-10 42 38 36 40 40 42 42 44 39 46 40 42 44 38 31 40