Civil Engineering Reference
In-Depth Information
Fig. 4.67 Autogenous shrinkage behaviour of concrete with ceramic waste aggregates (Suzuki
et al.
2009
)
observed increasing water absorption of concrete pavement blocks as the
replacement of natural coarse aggregates by ceramic hollow bricks aggregates
increased. The water absorption capacity of conventional concrete blocks and
blocks with 1/3, 2/3 and 3/3 (by mass) replacement of natural coarse aggregates by
ceramic aggregates were 17.05, 21.11, 23.97 and 27.64 %, respectively. Sentha-
marai et al. (
2011
) observed higher water absorption by capillarity and volume of
voids for concrete with coarse white porcelain waste aggregates than for con-
ventional concrete with granite coarse aggregate. The water absorption by capil-
larity of concrete with waste aggregates and conventional concrete were in the
ranges of 3.74-7.21 % and 3.10-6.52 %, respectively. Pacheco-Torgal and Jalali
(
2010
) found lower water and oxygen permeability for concrete with ceramic
waste as fine and coarse aggregates than for conventional concrete (Fig.
4.68
a);
however, the vacuum water permeability of conventional concrete waste was
negligibly lower than that of ceramic aggregates concrete (Fig.
4.68
b).
Binici (
2007
) observed lower depth of chloride permeation for concrete with
ceramic waste aggregates replacing 40, 50 and 60 % by volume of fine NA than
for conventional concrete. The depth of penetration for ceramic waste aggregates
concrete was 10-15 mm in comparison to about 45 mm in conventional concrete.
In the same study, the compressive strength of concrete with ceramic aggregates
was also higher than that of conventional concrete and strength increased with the
content of ceramic aggregates. Pacheco-Torgal and Jalali (
2010
) also observed
lower chloride diffusion through concrete with fine and coarse ceramic waste
aggregates than that through conventional concrete and best performance was
observed for concrete with fine ceramic aggregates (Fig.
4.69
a). Like in the Binici
(
2007
) study the results can be related with the compressive strength of concrete.
Senthamarai et al. (
2011
) observed higher electrical charge for concrete with
