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Volume-IF - JantERmantER

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DCPL-K4A02<br />

4.75 mm - 10-30<br />

2.36 mm - 5-20<br />

75 micron 0-5 0-4<br />

__________________________________________________________________<br />

TABLE-VIII<br />

AGGREGATE GRADING FOR 50 MM COMPACTED THICKNESS<br />

OF BITUMINOUS MACADAM<br />

____________________________________________________<br />

Sieve<br />

Percent by weight passing the sieve<br />

Designation _________________________________<br />

Grading A Grading B<br />

____________________________________________________<br />

50 mm 100<br />

40 mm 90-100<br />

25 mm 50-80 100<br />

20 mm - 70-100<br />

12.5 mm 10-30 -<br />

10 mm - 35-60<br />

4.75 mm - 15-35<br />

2.36 mm - 5-20<br />

75 micron 0-5 0-4<br />

____________________________________________________<br />

3.6.2.3 Proportioning of Materials<br />

The binder content for premixing shall be 3.5 and 4.0 percent by weight of<br />

the total mix for aggregate grading A and B respectively, except when<br />

otherwise directed by the Engineer.<br />

The quantities of aggregates to be used shall be sufficient to yield the<br />

specified thickness after compaction.<br />

3.6.2.4 Variation in Proportioning of Materials<br />

The Contractor shall have the responsibility for ensuring proper proportioning<br />

of materials and producing a uniform mix. A variation in binder content of<br />

0.3 percent by weight of total mix shall, however, be permissible for<br />

individual specimens taken for quality control tests.<br />

3.6.3 Construction Operations<br />

(PCA.775.S034sca7) V.II-D2/S-VII : 16

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