Displaying 1 publication

Abstract:
Sort:
  1. Kamarul Aini Mohd Sar, Sohif Mat, Khairiah Haji Badri, Muhammad Fauzi Mohd Zain
    Sains Malaysiana, 2015;44:771-778.
    Research on the development of lightweight concrete (LWC) utilizing wastes and natural resources as lightweight
    aggregates (LWA) is increasingly gaining attention worldwide due to sustainable and environmental concerns. A new
    alternative is using palm kernel oil polyol (PKO-p)-based polyurethane (PU) as filler. Rigid PU is a block copolymer
    comprised of a monomeric PKO-p and 2, 4-methylene diphenyl diisocyanate (crude MDI). The property of PKO-p, its
    ratio with crude MDI and reaction time were determined. The reaction time showed the average of 60 s for cream
    time and 95 s for rise time with maximum hardening time of 8 min. The reaction between PKO-p to MDI at 1:1 ratio
    resulted in a very short hardening time (within 2 min). The compressive strength of the rigid PU was at 7.0 MPa at a
    density of 206 kg/m3
    . Further increase in the amount of PKO-p increased the density and compressive strength of the
    PU. PU aggregate in the concrete mixture was added at 1 to 5% (w/w) to obtain concrete with density of less than 1800
    kg/m3
    . The resulting concrete has excellent compressive strength (17.5 MPa) and thermal conductivity (0.24 W/m⋅K).
    The results showed that physical properties of PU played the most significant effect on the physical and mechanical
    properties of the lightweight concrete
Related Terms
Filters
Contact Us

Please provide feedback to Administrator (afdal@afpm.org.my)

External Links