European Journal of Scientific Research - EuroJournals

Blast-Hole Cuttings: An Indicator of Drill Bit Wear in Quarries 730
Table 22: Sieve Analysis of Drill Cuttings from Blast-hole Six (Johnson Construction Ltd, Quarry, Akure)
Sieve Size (µm) MeanSieve
Size (µm)
Wt
Retained(g)
%Wt
Retained%
Cum Wt
Retained(g)
Cum Wt
Passing(g)
Cum %
Retained
Cum %
Passing
850 850 121.20 30.30 400.00 0 100.00 0
-850 + 600 600 32.40 8.10 278.80 121.20 69.70 30.30
-600 + 425 425 32.00 8.00 246.40 153.60 61.60 38.40
-425 + 300 300 40.96 10.24 214.40 185.60 53.60 46.40
-300 + 212 212 41.04 10.26 173.44 226.56 43.36 56.64
-212 + 150 150 43.20 10.80 132.40 267.60 33.10 66.90
-150 + 75 75 89.20 22.30 89.20 310.80 22.30 77.70
-75 + 63 63 0 0 0 400.00 0 100.00
Table 23: Sieve Analysis of Drill Cuttings from Blast-hole Seven (Johnson Construction Ltd, Quarry, Akure)
Sieve Size (µm) MeanSieve
Size (µm)
Wt
Retained(g)
%Wt
Retained%
Cum Wt
Retained(g)
Cum Wt
Passing(g)
Cum %
Retained
Cum %
Passing
850 850 116.80 29.20 400.00 0 100.00 0
-850 + 600 600 30.40 7.60 383.20 116.80 70.80 29.20
-600 + 425 425 31.68 7.92 252.80 147.20 63.20 36.80
-425 + 300 300 40.64 10.16 221.12 178.86 55.28 44.72
-300 + 212 212 41.84 10.46 180.48 219.52 45.12 54.88
-212 + 150 150 44.40 11.10 138.64 261.36 34.66 65.34
-150 + 75 75 94.24 23.56 94.24 305.76 23.56 76.44
-75 + 63 63 0 0 0 400.00 0 100.00
Table 24: Sieve Analysis of Drill Cuttings from Blast-hole Eight (Johnson Construction Ltd, Quarry, Akure)
Sieve Size (µm) MeanSieve
Size (µm)
Wt
Retained(g)
%Wt
Retained%
Cum Wt
Retained(g)
Cum Wt
Passing(g)
Cum %
Retained
Cum %
Passing
850 850 112.60 28.15 400.00 0 100.00 0
-850 + 600 600 29.60 7.40 287.40 112.60 71.85 28.15
-600 + 425 425 30.08 7.52 257.80 142.20 64.45 35.55
-425 + 300 300 39.28 9.82 227.72 172.26 56.93 43.07
-300 + 212 212 43.44 10.86 188.44 211.56 47.11 52.89
-212 + 150 150 47.36 11.84 145.00 255.00 36.25 63.75
-150 + 75 75 97.64 24.41 97.64 302.36 24.41 75.59
-75 + 63 63 0 0 0 400.00 0 100.00
Table 25: Sieve Analysis of Drill Cuttings from Blast-hole Nine (Johnson Construction Ltd, Quarry, Akure)
Sieve Size(µm)
MeanSieve
Size (µm)
Wt
Retained(g)
%Wt
Retained%
Cum Wt
Retained(g)
Cum Wt
Passing(g)
Cum %
Retained
Cum %
Passing
850 850 106.40 26.60 400.00 0 100.00 0
-850 + 600 600 28.60 7.15 293.60 106.40 73.40 26.60
-600 + 425 425 29.28 7.32 265.00 135.00 66.25 33.75
-425 + 300 300 42.20 10.55 235.72 164.28 58.93 41.07
-300 + 212 212 45.04 11.26 193.52 206.48 48.38 51.62
-212 + 150 150 47.44 11.86 148.48 251.52 37.12 62.88
-150 + 75 75 101.04 25.26 101.04 298.96 25.26 74.74
-75 + 63 63 0 0 0 400.00 0 100