Don’t Trust Soil Density Tests Until You Do This… (Check Plug Explained)

Описание: What is a Check Plug — and why is it one of the most important (and misunderstood) tests in soil compaction?

A Check Plug is not just another density test. It verifies that the soil being compacted in the field actually matches the material used to create the original laboratory Proctor curve. If the soil changes, your percent compaction calculations may be completely invalid — even if your density tests are passing.

In this video, we cover:

• What a Check Plug actually verifies
• When you should require one
• Why they are run on the dry side of optimum
• How wet-side plotting can mislead you
• What happens when the material doesn’t match
• How Check Plugs protect contractors, engineers, and owners

If the borrow source changes, compaction results seem inconsistent, or the soil looks different, a Check Plug can catch problems before they turn into settlement, cracking, or structural failure.

This test validates the moisture-density relationship — not just the number on the report.

If you work in geotechnical testing, construction inspection, or earthwork, this is a must-know topic.

#checkplug #soilcompaction #proctortest #fielddensitytest #compactiontesting #ASTMD698 #ASTMD1557 #geotechnicalengineering
#constructioninspection #earthworktesting