兑水 发表于 2009-9-16 19:42:11

ASTM C 341-2006 水泥灰浆或混凝土的钻取试样和锯取试样长度...

C341/C341M-03a Standard Practice for Length Change of Cast, Drilled, or Sawed Specimens of Hydraulic-Cement Mortar and Concrete
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