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The manual, moisture/density compaction hammer incorporates a 5.5 lb weight and a drop of 12″ with a 2″ face. Its guide sleeve has four vent holes in each end to release built up air pressure. ASTM D558, D698; AASHTO T99
The manual, moisture/density compaction hammer incorporates a 5.5 lb weight and a drop of 12″ with a 2″ face. Its guide sleeve has four vent holes in each end to release built up air pressure.
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