Page 86 - New Trends in Eco efficient and Recycled Concrete

Recycled plastic 61

Table 3.1 Properties of recycled PAs used in concrete
Type Particle size Specific References
(mm) gravity
HDPE 2.36 1.04 Naik et al. (1996); Elzafraney et al. (2005);
Kumar and Prakash (2006);
Thorneycroft et al. (2018)
LDPE 2.36 4.8 0.86 0.93 Galvao et al. (2011); Chaudhary et al.
(2014)
PVC 5 1.4 Elzafraney et al. (2005); Kou et al. (2009)
PP 9.5 10 0.9 1 Elzafraney et al. (2005); Yang et al.
(2015); Ozbakkaloglu et al. (2017)
PET 1.14 12.5 1.27 1.39 Choi et al. (2005, 2009); Marzouk et al.
(2007); Ismail and Al-Hashmi (2008);
Albano et al. (2009); Yesilata et al.
(2009); Remadnia et al. (2009);
Akcaozoglu et al. (2010); Frigione
(2010); Galvao et al. (2011); Ramadevi
and Manju (2012); Ferreira et al. (2012);
Silva et al. (2013); Ge et al. (2013);
Juki et al. (2013); Saikia and de
Brito (2013); (2014); Akcaozoglu
and Ulu (2014); Thorneycroft
et al. (2018)
EPS 1 16 0.22 0.34 Ravindrarajah and Tuck (1994); Lai et al.
(1996); Sabaa and Ravindrarajah (1999);
Babu and Babu (2003); Chen and Liu
(2004); Babu et al. (2005); (2006);
Haghi et al. (2006); Tang et al. (2008);
Kan and Demirboga (2009); Madandoust
et al. (2011); Xu et al. (2012); Herki
et al. (2013); Ferrandiz-Mas et al. (2014)
UEPS 8 1.02 Babu et al. (2006)
HIPS 4 1.04 Wang and Meyer (2012)
EVA 9.5 0.24 Lima et al. (2010)
PUR 20 0.045 Fraj et al. (2010)
Melamine 10 1.48 Panyakapo and Panyakapo (2008)
HDPE, High-density polyethylene; EVA, ethylene-vinyl acetate; PP, polypropylene; HIPS, high-impact polystyrene;
PVC, polyvinyl chloride; LDPE, low-density polyethylene; PET, polyethylene terephthalate; EPS, expanded
polystyrene; UEPS, un-expanded polystyrene; PUR, polyurethane.

3%. The preparation, casting and curing of PA and PF concrete are similar to
those of conventional concrete. However, because PAs and NAs have signifi-
cantly different specific gravities and PAs tend to float, the problem of segrega-
tion may occur in concretes containing PAs (Babu and Babu, 2003). To address
this issue, PAs can be treated with hydrophilic chemical coating to prevent the