Answer :
Final answer:
An ASTM C138 lab report should include the experiment's objective, detailed procedure, apparatus, calculations and data, results and analysis, conclusions, and any recommendations for future testing, all based on the standard ASTM guidelines.
Explanation:
When conducting an experiment according to ASTM C138, which deals with the Unit Weight, Yield, and Air Content (Gravimetric) of Concrete, the lab report should comprehensively include several key components based on a provided template. These components typically encompass the objective of the experiment, a detailed procedure section that outlines the steps taken during the experiment, the apparatus used, calculations and data acquired, as well as a section for results and analysis. Moreover, the report should contain conclusions that discuss the findings and their implications, followed by any recommendations for future testing or potential improvements to the procedure. It is crucial that the report is detailed and follows the standard method outlined by ASTM C138 to ensure accuracy, reproducibility, and validity of the results.