Reference Specifications for Civil Engineering Work 2001


Junctions with Existing Pavements



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3.3Junctions with Existing Pavements


Trimming: Where the pavement is to be joined to an existing pavement, remove a strip of the existing pavement at least 300 mm wide for its full depth and trim the edge to an angle of approximately 45o in steps of maximum height 150 mm before placing new pavement material.

3.4Sub Base and Base Compaction


Compaction

Modified maximum dry density: To AS 1289.5.2.1.

Desirable minimum relative compaction: 95% of modified maximum dry density, to AS 1289.5.4.1. Refer annexure.

Conformance criteria: Refer to S120-Quality Clause 6.2.

Field dry density: To AS 1289.5.3.1, AS 1289.5.3.5 or AS 1289.5.8.1. If using AS 1289.5.8.1, calibrate the surface moisture-density gauge in accordance with AS 1289.5.8.4 before use on site.

Moisture content

General: During spreading and compaction, maintain materials within the range of - 2% to + 1% from the optimum moisture content (modified compaction) appropriate to each material.

Rectification

If a section of pavement material fails to meet the required conformance criteria as specified in S120 Quality Clause 6.2, remove the non-complying material, replace with new pavement material, and recompact.



Level corrections

High areas: Grade off.

Low areas: Remove to a minimum depth of 75 mm, replace with new material and recompact.

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