Mydin, M.A.O. and Md. Sani, N. and Mohd Yusoff, M.A. and Ganesan, S.
(2014)
Determining the Compressive, Flexural and Splitting Tensile
Strength of Silica Fume Reinforced Lightweight Foamed
Concrete.
MATEC Web of Conferences, 17 (01008).
pp. 1-6.
ISSN 2261-236X
Abstract
This study investigated the performance of the properties of foamed concrete
in replacing volumes of cement of 10%, 15% and 20% by weight. A control unit of
foamed concrete mixture made with ordinary Portland cement (OPC) and 10%, 15% and
20% silica fume was prepared. Three mechanical property parameters were studied such
as compressive strength, flexural strength and splitting tensile of foamed concrete with
different percentages of silica fume. Silica fume is commonly used to increase the
mechanical properties of concrete materials and it is also chosen due to certain economic
reasons. The foamed concrete used in this study was cured at a relative humidity of 70%
and a temperature of ±28°C. The improvement of mechanical properties was due to a
significant densification in the microstructure of the cement paste matrix in the presence
of silica fume hybrid supplementary binder as observed from micrographs obtained in the
study. The overall results showed that there is a potential to utilize silica fume in foamed
concrete, as there was a noticeable enhancement of thermal and mechanical properties
with the addition of silica fume.
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