NCMA-SRW-H1
Cum. no. of points landing on
Cumulative
Volume fractions (%)
No. of inter-
Traverse
Fine
Cement
Total
total no.
Fine
Cement
Total
connected
no.
aggregate
paste
air
of points
aggregate
paste
air
air voids
1
28
14
1
43
65.1
32.6
2.3
6
2
57
27
3
87
65.5
31.0
3.4
14
3
85
39
4
128
66.4
30.5
3.1
21
4
111
52
6
169
65.7
30.8
3.6
27
5
141
60
9
210
67.1
28.6
4.3
36
6
174
67
13
254
68.5
26.4
5.1
48
7
198
82
15
295
67.1
27.8
5.1
56
8
229
92
15
336
68.2
27.4
4.5
60
9
255
105
17
377
67.6
27.9
4.5
66
10
282
118
19
419
67.3
28.2
4.5
71
Total length of traverse (T) = (Total no. of points No. of traverse lines) * Grid interval = 259.7 mm
Voids/mm = n = N/T = 0.27
Specific surface in mm2/mm3 = 4/l = 24.11
Average chord intercept (l) in mm = A/100 n = 0.17
Paste/air ratio (p/A) = 6.211 >4.342
If p/A >4.342, then spacing factor (L) = 212 m
If p/A <4.342, then spacing factor (L) = 258 m
Conclusion: Air content is low. Spacing factor is low (good). Based on air voids in the paste alone,
adequate F-T resistance is expected. The aggregate appears to be sound, well graded, well packed, and
angular. Paste/air ratio is low.
NCMA-SRW-I10
Cum. no. of points landing on
Cumulative
Volume fractions (%)
No. of inter-
Traverse
Fine
Cement
Total
total no.
Fine
Cement
Total
connected
no.
aggregate
paste
air
of points
aggregate
paste
air
air voids
1
29
8
4
41
70.7
19.5
9.8
11
2
54
19
9
82
65.9
23.2
11.0
30
3
70
37
17
124
56.5
29.8
13.7
47
4
93
49
23
165
56.4
29.7
13.9
67
5
116
63
27
206
56.3
30.6
13.1
77
6
138
78
31
247
55.9
31.6
12.6
88
7
155
87
45
287
54.0
30.3
15.7
110
8
175
106
47
328
53.4
32.3
14.3
126
9
196
121
52
369
53.1
32.8
14.1
140
10
224
132
54
410
54.6
32.2
13.2
154
Total length of traverse (T) = (Total no. of points No. of traverse lines) * Grid interval = 254 mm
Voids/mm = n = N/T = 0.61
Specific surface in mm2/mm3 = 4/l = 18.41
Average chord intercept (l) in mm = A/100 n = 0.22
Paste/air ratio (p/A) = 2.444 <4.342
If p/A >4.342, then spacing factor (L) = 182 m
If p/A <4.342, then spacing factor (L) = 133 m
Conclusion: Air content is low. Spacing factor is low (good). Based on air voids in the paste alone,
adequate F-T resistance is expected. However, abundance of very porous (large-pored) aggregates
may indicate questionable performance. Paste/air ratio is very low.
44
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