TY - JOUR
T1 - Sustainable lightweight self-compacting concrete using oil palm shell and fly ash
AU - Ting, Timothy Zhi Hong
AU - Rahman, Muhammad Ekhlasur
AU - Lau, Hieng Ho
N1 - Funding Information:
The authors would like to acknowledge full research funding provided by Curtin Malaysia Research Institute (CMRI 6020) and laboratory support provided by Curtin University Malaysia.
PY - 2020/12/20
Y1 - 2020/12/20
N2 - This research investigated fresh and hardened properties of lightweight self-compacting concrete (LWSCC) incorporated with oil palm shell (OPS) and fly ash (FA). Fresh concrete properties including passing ability, filling ability and segregation resistance were assessed. The properties fulfilled EFNARC guidelines. Incorporation of FA improved fresh properties, particularly filling ability, with the slump flow value increased from 665 mm to 730 mm. As for hardened properties, OPS-aggregate based LWSCC mixes achieved compressive strength of range 18–38 MPa at 28-day age while the splitting tensile strength was in the range of 1.6 to 2.8 MPa. SEM analyses showed good bonding in the interfacial transition zones (ITZ). Micro-pores of OPS were filled by cement hydration products and thus ITZ was enhanced. LWSCC incorporated with OPS, a renewable resource from agricultural waste, and with partial FA replacement, is potentially a sustainable alternative construction material.
AB - This research investigated fresh and hardened properties of lightweight self-compacting concrete (LWSCC) incorporated with oil palm shell (OPS) and fly ash (FA). Fresh concrete properties including passing ability, filling ability and segregation resistance were assessed. The properties fulfilled EFNARC guidelines. Incorporation of FA improved fresh properties, particularly filling ability, with the slump flow value increased from 665 mm to 730 mm. As for hardened properties, OPS-aggregate based LWSCC mixes achieved compressive strength of range 18–38 MPa at 28-day age while the splitting tensile strength was in the range of 1.6 to 2.8 MPa. SEM analyses showed good bonding in the interfacial transition zones (ITZ). Micro-pores of OPS were filled by cement hydration products and thus ITZ was enhanced. LWSCC incorporated with OPS, a renewable resource from agricultural waste, and with partial FA replacement, is potentially a sustainable alternative construction material.
KW - Compressive strength
KW - Fly ash
KW - Fresh properties
KW - Interfacial transition zone
KW - Oil palm shell
KW - Splitting tensile strength
KW - Water absorption
UR - http://www.scopus.com/inward/record.url?scp=85090334846&partnerID=8YFLogxK
U2 - 10.1016/j.conbuildmat.2020.120590
DO - 10.1016/j.conbuildmat.2020.120590
M3 - Article
AN - SCOPUS:85090334846
SN - 0950-0618
VL - 264
JO - Construction and Building Materials
JF - Construction and Building Materials
M1 - 120590
ER -
