【单选题】【消耗次数:1】
以下混凝土强度不适于用回弹法推定的是()。
8
18
28
38
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相关题目
【判断题】 混凝土强度检测目前常用方法有4种:回弹法、超声法、超声回弹综合法、钻芯法。
① 
② 
【单选题】 《回弹法检测混凝土抗压强度技术规程》规定,取一个结构或构件混凝土作为评定混凝土强度的最小单元,至少取()个测区。
①  1
②  5
③  8
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②  错误
【单选题】 以下不属于影响回弹法准确度的因素是:
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【单选题】 下列人员中,不适用回避的是( )。
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【判断题】 通常混凝土以28天龄期评定强度等级,也就是说,混凝土经过28天龄期后其强度便停止发展了( )。
①  正确
②  错误
【判断题】 通常混凝土以28天龄期评定强度等级,也就是说,混凝土经过28天龄期后其强度便停止发展了( )。
①  正确
②  错误
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