Compaction: Lift Thickness

• By: Emily Adams
• On: 08/01/2016 13:21:31
• In: Technical Tips

Lift thickness effects ability to compact mat density. Use the following tips to help in compaction.

• Table 12 in Item 341 list minimum and maximum lift thickness
• The general rule of thumb 4 times the nominal maximum aggregate size

Thicker Lifts

• Thicker lifts are more difficult to achieve uniform density from top to bottom of the lift
• Try using higher amplitude

Thinner Lifts

• Thinner lifts are more difficult to achieve density
• Using rollers in vibratory mode may crush aggregate
• Try using static mode and lower amplitude