各標號混凝土強度合格所需回彈值

混凝土標號合格所需回彈值

平均炭化深度(mm)

0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5

C15 22.9 23.2 23.4 23.6 23.9 24.1 24.4 24.6

C20 26.6 26.9 27.1 27.4 27.7 28.0 28.1 28.5

C25 29.8 30.1 30.4 30.7 31.1 31.4 31.7 32.0

C30 32.8 33.1 33.4 33.8 34.1 34.5 34.8 35.2

C35 35.5 35.8 36.2 36.6 37.0 37.3 37.7 38.1

C40 38.0 38.4 38.8 39.2 39.6 40.0 40.4 40.8

C45 40.4 40.8 41.2 41.6 42.1 42.5 42.9 43.4

4.0 4.5 5.0 5.5 》6

24.9 25.1 25.4 25.7 25.9

28.9 29.1 29.5 29.7 30.1

32.3 32.7 33.0 33.4 33.7

35.5 35.9 36.3 36.7 37.1

38.5 38.9 39.3 39.7 40.1

41.3 41.7 42.1 42.5 43.0

43.8 44.3 44.7 45.2 45.7