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COMPACTION STANDARDS AND CONTROL
J J Farrington
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Abstract
The paper examines the difficulties found in achieving both relatively high compacted densities and closer surface tolerances on dense bitumen macadam road base material on large, fast-moving sites, and also recent progress in measuring these densities. The lack of any specific compaction requirements for wearing course materials is questioned, particularly in respect of the higher stability mixes now being used, some of which have low workability at laying stage. Support is given to the concept of measuring coated stone by weight rather than by volume. (TRRL)