Civil Engineering Reference
In-Depth Information
Fig. 6.15 Ratio between
concrete abrasion losses of
mass versus ratio between
densities of aggregates in mix
(top), water absorptions of
aggregates in mix (middle)
and 7-day compressive
strengths (bottom) of concrete
1.10
1.05
y = -4.5726x + 1
R
2
= 0.8505
1.00
0.95
0.90
0.85
Evangelista
Matias
0.80
0.75
0.70
0.00
0.01
0.02
0.03
0.04
0.05
0.06
1-D
RAC
/D
RC
1.10
1.05
y = -0.0813x + 1
R
2
= 0.8001
1.00
0.95
0.90
0.85
0.80
Evangelista
Matias
0.75
0.70
0.00
0.50
1.00
1.50
2.00
2.50
3.00
wa
RAC
/wa
RC
-1
1.10
1.05
1.00
y = -2.3175x + 1
R
2
= 0.3473
0.95
0.90
0.85
Evangelista
Matias
0.80
0.75
0.70
0
0.02
0.04
0.06
0.08
0.1
0.12
1-f
c7RAC
/f
c7RC
between particles provided by the more porous surface of recycled aggregates. It is
the only property analysed where concrete with recycled aggregates behaves better
than conventional concrete.
6.4.2.8 Shrinkage
Figure
6.16
shows the relationship between the ratio between the shrinkages of the
hardened concrete and the ratio between the densities and the water absorptions of
the aggregates in the mix and the 7-day compressive strengths of concrete,
