AutoCAD Certification Practice Test

Which concrete is most suitable for air-content testing by the ASTM C231/C231M pressure method?

Concrete made with relatively dense normal-weight aggregate Concrete made with highly porous lightweight aggregate Concrete made with air-cooled blast-furnace slag aggregate Concrete in which aggregate particles contain substantial internal air voids

Correct Answer:

Concrete made with relatively dense normal-weight aggregate

Explanation:

The pressure method is intended for concrete made with relatively dense aggregate. Highly porous, lightweight, or similar aggregates can contain internal air that makes the pressure method unsuitable; the volumetric method is used instead.

Access more questions from this quiz

Continue to AutoCAD Certification Practice Test for more practice questions and the full quiz experience.

Access More Questions