[Engineering Version] Daily Question 20180311
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When the strength of concrete specimens is found to be unsatisfactory, the ( ) testing method can be employed to estimate the strength of the concrete in structural elements in accordance with the provisions of **current relevant standards**, which can then serve as a basis for taking action. a. No damage or only minor damage b. Recreate the specimens using the original mix ratio and raw materials c. Specimens cured under the same conditions on site d. Analysis of the material mix ratio for concrete specimens Answer: a
a. No damage or partial damage
c. On-site specimens cured under identical conditions