that of the control mix, whereas the flexural strength of the
mix MRA100-CFA20-CC20 is 12% higher.
4 Cost Analysis
Cost analysis was done for all mixes in Tables 2 and 3.
According to the market prices in Dubai (Dubai Statistics
Center 2018), the unit cost of each material was applied as
shown in Table 5. Because the readily damaged ceramic is
not recycled in the UAE, it was estimated to cost 10% of the
cost of RCA since a secondary crushing is only required.
Using Table 5, the total cost of each mix can be found in
Fig. 6, where the conventional concrete (M0) costs the
highest
(204
DHS/m
3 ).
The
mixes
MRA100,
MRA100-CFA20, and MRA100-CFA20-CWP20, cost 187,
185, and 160 DHS/m
3 , respectively. As a result, the mix
MRA100-CFA20-CC20 costs to lowest by 22% from the
Table 4 Tests on the hardened
concrete at 56 days
Mix-code
f cu (Mpa)
f c (Mpa)
E (Gpa)
f ct (Mpa)
M0
55
47
32
4.1
MRA100
46
44
28
4.3
MRA100-CFA20
57
54
28
4.1
MRA100-CFA20-CWP20
50
46
27
4.6
Fig. 3 The relative percentages
between each mix (Mi) and the
control mix (M0) regarding the
cylindrical compressive strength
Fig. 4 The relative percentages
between each mix (Mi) and the
control mix (M0) regarding the
elastic modulus
Fig. 5 The relative percentages
between each mix (Mi) and the
control mix (M0) regarding the
flexural tensile strength
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