ASTM C31 Standard Practice for Making and Curing Concrete Test Specimens in the Field

Heidelberg Materials North America2 minutes read

Fill a cylinder mold in three equal layers with concrete, rod each layer, tap the outside to close voids, and place a lid on top for initial curing.

Insights

  • The process of creating a concrete test cylinder according to asmc 31 involves meticulous layering, compacting, and finishing techniques, emphasizing precision and attention to detail in each step.
  • Essential tools for this task include a cylinder mold, scoop, tamping rod, mallet, and lid, each serving a specific function in ensuring the quality and integrity of the test cylinder, highlighting the importance of using the right equipment for the job.

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Recent questions

  • How do I make a concrete test cylinder?

    By using a cylinder mold, scoop, tamping rod, and mallet, fill the mold in three layers, rod each layer, tap the mold, and cure it.

  • What tools are needed for a concrete test cylinder?

    Cylinder mold, scoop, tamping rod, mallet, and lid are required.

  • How many times should I rod each layer?

    Rod each layer 25 times for proper compaction.

  • How many layers are needed for a concrete test cylinder?

    Fill the mold in three equal layers for a test cylinder.

  • What is the final step after making a concrete test cylinder?

    Place the lid on the mold, label it, and move it to its curing location.

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Summary

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Creating Concrete Test Cylinders According to ASMC

  • To make a concrete test cylinder according to asmc 31, you will need a cylinder mold, a scoop, a mallet, a 5/8 inch diameter tamping rod with a hemispherical end, and a lid. Fill the mold in three equal layers, using a scoop to place concrete in the mold and rod each layer 25 times. Tap the outside of the mold 10 to 15 times with a mallet to close voids. For the second layer, fill the mold another third, rod it 25 times, tap the outside, and slightly overfill. Rod the last layer, tap the outside, strike off excess concrete, clean the top edge, place the lid on the mold, label it, and move it to its initial curing location.
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