ETL 1110-3-496
15 Dec 98
The unit weights and 28-day strengths listed in the table were determined independently from
three CLSM cylinders provided by the Contractor. ASTM D 6023 and 4832 were followed.
Mixes 6-8, 10, 13-17, 19, 21, and 22 met the compressive strength specification; the remaining
mixes did not.
Average2
Average2 28-
Air-entraining agent
Water
Cement
Mix
Aggregate
(lb/yd3)
(lb/yd3)
(lb/yd3)
(oz)
unit weight
day strength
#
sand1
(lb/ft3)
bottom ash
fly ash
DaraFillTM
DX
(psi)
IITM
1
1474
75
880
64
86
11
2
1423
100
975
91
86
14
3
1390
150
934
183
85
28
4
1391
150
818
62
75
13
5
1358
200
880
456
82
39
6
1069
200
705
64
84
84
7
1121
400
791
546
85
153
8
1150
400
678
60
80
162
9
(w) 2600
100
400
10
110
34
10
(w) 2160
100
400
3
113
59
11
(f) 2500
100
400
10
105
29
12
(f) 2080
100
400
3
99
34
13
(w) 2560
150
400
10
111
80
14
(w) 2518
200
400
3
118
185
15
(w) 2080
200
400
10
120
201
16
(f) 2420
200
400
10
106
272
17
(w) 2480
150
50
400
10
118
48
18
(f) 2385
150
50
400
10
114
26
19
(w) 2050
100
100
400
3
109
72
20
(w) 2230
100
100
500
10
121
473
21
(w) 2380
200
100
400
10
124
188
22
(w) 1945
200
100
400
3
117
178
23
(w) 1910
400
100
500
10
132
1137
24
(f) 1835
400
100
500
10
102
770
1
(w) = washed concrete sand; (f) = unwashed fill sand
2
Average of three cylinders/strength tests
c. Comments by Contractor. The contractor documented several comments after preparing the
mix designs. Some of the comments may be applicable to the industry as a whole. Others
represent concerns that are specific to the operation and geographic region of the contractor.
They are presented here as a single example of what a user of this ETL may encounter when
working with a contractor. The comments are listed according to the aggregate used.
Comments regarding bottom ash mix designs (Mix #s 1-8):
"There are quite a few problems with using bottom ash as an aggregate for flowable fill.
Bottom ash is a waste material; we would not even be willing to load it into the batch plant for
fear of getting it mixed into other aggregates and contaminating a concrete mix. A separate batch
plant to load and weigh the bottom ash would be required."
A-9
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