Environmental Engineering Reference
In-Depth Information
Table 10. coefficient of thermal conductivity results in
the batches by weight (30 × 30 × 5 cm specimens).
4,00
3,00
2,00
λ Thermal
conductivity
(W/m ⋅k)
1,00
Batch by weight
0,00
ABSORPTION COEFF.
DENSITY 28 DAYS (kg/dm
3
)
ReFeRence MiXTURe
0.460
PARAMETERS
0.425
100%aeV 0-12 mm (a/c = 1.2)
0.420
100%aeV 0-12 mm (a/c = 1.1)
REFERENCE MIXTURE
100%AEV 0-12 mm (A/C=1,2)
100%AEV 0-12 mm (A/C=1,1)
100%AEV 0-8 mm
100%aeV 0-8 mm
0.410
90%CEM,10%APN 0-5 mm
+10%APE 0-6 mm
90%ceM 10%aPn 0-5 mm
0.420
0.365
+10 aPe 0-6 mm
Figure 6. absorption coefficient ratio—Density ratio in
28 days in batches by weight (30 × 30 × 5 cm specimens).
Table 11. coefficient of thermal conductivity results in
the batches by volume (30 × 30 × 5 cm specimens).
4,00
λ Thermal
conductivity
(W/m ⋅k)
3,00
Batch by weight
2,00
1,00
ReFeRence MiXTURe
0.460
0,00
100%aeV 0-8 mm
0.305
ABSORPTION COEFF.
DENSITY 28 DAYS (kg/dm
3
)
PARÁMETERS
REFERENCE MIXTURE
90%ceM 10%aPn 0-5 mm
0.260
90%ceM 10%aPe 0-6 mm
0.325
+10 aPe 0-6 mm
0.255
100%AEV 0-12 mm
0.265
100%AEV 0-8 mm
90%CEM 10%APN 0-5 mm
+20 aPe 0-6 mm
90%CEM 10%APE 0-6 mm
+10%APE 0-6 mm
0.275
+30 aPe 0-6 mm
+20%APE 0-6 mm
+30%APE 0-6 mm
90%ceM 10%TheR
0.295
90%CEM 10%THER
80%CEM 20%THER
80%ceM 20%TheR
0.260
70%CEM 30%THER
70%ceM 30%TheR
0.310
Figure 7. absorption coefficient ratio—Density ratio in
28 days in batches by volume (4 × 4 × 16 cm specimens).
of 16% as compared to the Reference Batch. if
we compare the results of the 100%aeV 0-12 mm
(W/c = 1.2) batches with the 100%aeV 0-8 mm
batch, we observe that the replacement of 100% of
the thick aggregate by volume with a finer fraction
does not produce a significant improvement in the
the highest percent reduction in the coefficient
of thermal conductivity λ were the +10%aPe
0-6 mm, with a reduction of 43.33%, the 80%ceM
20%TheR and the 90%ceM 10%aPn 0-5 mm,
with a reduction of 42.22%. on the other hand,
although the addition of these materials results in
an improvement in the coefficient of conductivity
in all batches, the aPe 0-6 mm is the material that
presents a greater influence in this parameter, as
the optimum percentage is 10% by volume.
4,00
3,00
2,00
1,00
0,00
ABSORPTION COEFF.
DENSITY 28 DAYS (kg/dm
3
)
PARÁMETERS
REFERENCE MIXTURE
100%AEV 0-12 mm
100%AEV 0-8 mm
90%CEM 10%APN 0-5 mm
90%CEM 10%APE 0-6 mm
+10%APE 0-6 mm
+20%APE 0-6 mm
+30%APE 0-6 mm
90%CEM 10%THER
80%CEM 20%THER
70%CEM 30%THER
Figure 8. absorption coefficient ratio—Density ratio in
28 days in batches by volume (30 × 30 × 5 cm specimens).
4
conclUsions
3.3
Coefficient of thermal conductivity
With regard to the coefficient of thermal conduc-
tivity tests, the +10%aPe 0-6 mm obtained the
lowest λ coefficient of thermal conductivity in
the batches by weight, with a percent reduction
Tables 12 to 14 show a summary chart with the con-
clusions of the physical tests obtained in stage 2,
which have been explained in the results and dis-
cussion section. The chart displays the analyzed
