TY  - JOUR
Y1  - 2018///
UR  - https://www.scopus.com/inward/record.uri?eid=2-s2.0-85050767650&doi=10.1016%2fj.conbuildmat.2018.07.195&partnerID=40&md5=0f9ae8b38482a33ed16fa19506676d9d
JF  - Construction and Building Materials
A1  - Shafiq, N.
A1  - Choo, C.S.
A1  - Isa, M.H.
VL  - 187
N2  - Used engine oil (UEO) is recognized as a hazardous waste produced during engine servicing. Its disposal in an environmentally friendly manner is a big challenge. This paper presents the experimental results of an investigation of the effects of UEO on slump and hardened concrete properties. Three concrete groups; 100 cement (OPC) concrete, concrete with 60 OPC + 40 fly ash and concrete with 80 OPC + 20 rice husk ash were prepared. Each of the groups composed of a control mix and a mix with 0.15 dosage of UEO (this dosage was selected from previous studies). Slump measurement of fresh concrete confirmed that a small dosage of UEO reasonably improves the slump of concrete. Lignosulfonate molecule (a common class of water reducing admixture) consists of aromatic rings containing one of the ionic groups viz., OHâ??, COOâ??, SO3 2â??. The chemical composition of used engine oil showed the presence of 37 SO3 content that may be the reason for the plasticizing effect. Used engine oil caused variation in the compressive strength in the range of ±20 as compared to the control mix. The compressive strength at 28, 56, and 180 days of 100 OPC concrete with UEO reduced by about 17. In general, a small dosage of used engine oil caused a substantial reduction in coefficient of oxygen permeability and porosity of all concrete mixes, which is an indicator of enhanced long-term durability. © 2018 Elsevier Ltd
KW  - Cements; Concretes; Engines; Fly ash; Lubricating oils; Oxygen; Oxygen permeable membranes
KW  -  Air content; Chemical compositions; Hardened concrete properties; Oxygen permeability; Rice husk ash; Substantial reduction; Used engine oil; Water reducing admixtures
KW  -  Compressive strength
ID  - scholars9835
SN  - 09500618
PB  - Elsevier Ltd
EP  - 184
AV  - none
N1  - cited By 15
TI  - Effects of used engine oil on slump, compressive strength and oxygen permeability of normal and blended cement concrete
SP  - 178
ER  -