基于(4)中立方体试块的试验结果，研究了不同来源再生混凝土抗拉强度的统计特征。
Based on experimental data in (4), the statistical characteristics for the tensile strength of rac with RCA from different origins were determined.
对经过0、25、50、75、100、125次冻融循环的四个不同等级的普通混凝土立方体试块和少部分棱柱体试块进行了试验研究。
The experimental study of plain concrete test cubes and a few prismoids, both of what classified to four ranks, suffering 0, 25, 50, 75,100 and 125 cycles of freezing and thawing were carried out.
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