Webindicate unsatisfactory work, the necessary reworking, compaction, replacement, re-testing and new proof roll will be required prior to continuation of the paving process. The testing and proof rolling are valid for 24 hours. Changes in weather such as freezing, or precipitation will require re-testing and proof roll of the subgrade. WebThis item shall govern the preparation and treatment of the subgrade, existing subbase or existing base by pulverizing the existing materials; furnishing and applying lime; mixing; mellowing for a minimum of 12 hours and compacting the mixed material to the required depth and density.
Compaction - West Virginia
WebJun 8, 2009 · You can achieve nearly 100% compaction, enough that tire prints from a ready-mix truck are hardly noticeable. MacDonald says that closed-graded material should be graded and compacted to a “slip-sheet” surface with no abrupt elevation changes or ruts so that concrete can easily move on the subgrade as it shrinks. The result is minimal cracking. WebProof Rolling Once the embankment is completed and immediately prior to subbase placement (or Immediately prior to final trimming of the subgrade surface and placement of subbase materials in cut sections), the subgrade surface must be proof rolled. The proof roller is a large box supported by four (4) pneumatic tires one axle. gantan multihead weigher
Item 132 Embankment - Texas Department of Transportation
WebMay 1, 2005 · a) Have a minimum IBV of 6.0, if untreated, and 10.0 if treated. b) Limit the maximum rut depth to 0.5 inch (12.5 mm) under all construction traffic, prior to pavement construction. c) Provide good support for placement and compaction of pavement layers. Webperformed uniformly during compaction. Compaction of each reclaimed asphalt pavement aggregate layer shall continue until a wet density of at least 95 percent of the maximum … Web2 hours ago · But specialists say that this is the result of compaction, disturbance and dry summers - and measures can be put in place to 'revive the tree's vigour'. ... with before and after pictures as proof ... gant archive shield