TABLE 5.2 Specifications for Modified Proctor Test (Based on ASTM Designation 1557) Item Method A Method B Method C Diameter of mold 101.6 mm (4 in.) 101.6 mm (4 in.) 152.4 mm (6 in.) Volume of mold 944 cm ( ft) 944 cm³ ( ft') 2124 cm' (0.075 ft') Mass (weight) 4.54 kg (10 lb) 4.54 kg (10 lb) 4.54 kg (10 lb) of hammer Height of hammer drop 457.2 mm (18 in.) 457.2 mm (18 in.) 457.2 mm (18 in.) Number of hammer 25 25 56 blows per layer of soil Number of layers of compaction 5 5 2700 kN-m/m (56,000 ft-lb/ft') 2700 kN-m/m (56,000 ft-lb/ft') 2700 kN-m/m (56,000 ft-lb/ft) Energy of compaction Portion passing No. 4 (4.75-mm) sieve. May be used if 20% or less by weight of material is Soil to be used Portion passing 9.5-mm (-in.) sieve. May be used if soil retained on No. 4 Portion passing 19.0-mm G-in.) sieve. May be used if more than 20% by weight of sieve is more than 20% and material is retained on 9.5-mm 20% or less by weight is retained on 9.5-mm -in.) -in.) sieve and less than 30% by weight is retained on 19-mm (-in.)sieve. retained on No. 4 sieve. sieve.

TABLE 5.2 Specifications for Modified Proctor Test (Based on ASTM Designation 1557) Item Method A Method B Method C Diameter of mold 101.6 mm (4 in.) 101.6 mm (4 in.) 152.4 mm (6 in.) Volume of mold 944 cm ( ft) 944 cm³ ( ft') 2124 cm' (0.075 ft') Mass (weight) 4.54 kg (10 lb) 4.54 kg (10 lb) 4.54 kg (10 lb) of hammer Height of hammer drop 457.2 mm (18 in.) 457.2 mm (18 in.) 457.2 mm (18 in.) Number of hammer 25 25 56 blows per layer of soil Number of layers of compaction 5 5 2700 kN-m/m (56,000 ft-lb/ft') 2700 kN-m/m (56,000 ft-lb/ft') 2700 kN-m/m (56,000 ft-lb/ft) Energy of compaction Portion passing No. 4 (4.75-mm) sieve. May be used if 20% or less by weight of material is Soil to be used Portion passing 9.5-mm (-in.) sieve. May be used if soil retained on No. 4 Portion passing 19.0-mm G-in.) sieve. May be used if more than 20% by weight of sieve is more than 20% and material is retained on 9.5-mm 20% or less by weight is retained on 9.5-mm -in.) -in.) sieve and less than 30% by weight is retained on 19-mm (-in.)sieve. retained on No. 4 sieve. sieve.

Solid Waste Engineering

3rd Edition

ISBN:9781305635203

Author:Worrell, William A.

Publisher:Worrell, William A.

Chapter5: Separation Processes

Section: Chapter Questions

Problem 5.18P

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