【判断题】混凝土的抗渗等级以每组6个试件中3个试件未出现渗水时的最大水压力计算, 其结果应满足设计的抗渗等级。
【单选题】Westerners are familiar with the journalistic interview ______.
A.
but most of them wish to stay away from it
B.
and many of them hope to be interviewed some day
C.
and many of them would like to acquire a tree understanding of it
D.
but most of them may not have been interviewed in person
【单选题】混凝土的抗渗等级以分组6个试件中( )个出现渗水时的最大压力表示。
【单选题】Westerners are familiar with the journalistic interview ______.
A.
but most of them wish to stay away from it
B.
and many of them hope to be interviewed some day
C.
and many of them would like to acquire a true understanding of it
D.
but most of them may not have been interviewed in person
【单选题】混凝土的抗渗等级,以每组6个试件中( )个试件未出现渗水时的最大水压力计算出的P值进行评定。
【单选题】下列关于混凝土的耐久性的相关表述中,无误的是( )。
A.
抗渗等级是以28d龄期的标准试件,用标准试验方法进行试验,以每组8个试件,6个试件未出现渗水时,所能承受的最大静水压来确定
B.
主要包括抗渗性、抗冻性、耐久性、抗碳化、抗碱一骨料反应等方面
C.
抗冻等级是28d龄期的混凝土标准试件,在浸水饱和状态下,进行冻融循环试验,以抗压强度损失不超过20%,同时质量损失不超过10%时,所能承受的最大冻融循环次数来确定
D.
当工程所处环境存在侵蚀介质时,对混凝土必须提出耐久性要求