Influence of secondary aluminum dross (SAD) on compressive strength and water absorption capacity properties of sandcrete block
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Cogent Engineering
Abstract
Description
Secondary aluminum dross (SAD) is a hazardous by-product of the
aluminum smelting industry. Among various recycling options of this waste, construction
and building materials applications is one of the value-added options to
end dumping. The present study, thereby, investigates the influence of SAD on the
mechanical and durability properties of sandcrete blocks (SBs). Five partial replacements
0%, 10%, 20%, 30% and 40% of river sand with SAD were experimented at
constant water–cement ratio of 0.45. Sixty-three SB samples of size 150 mm ×
225 mm × 450 mm were molded and cured at different ages of 7, 14 and 28 days
before the hardened blocks were subjected to water absorption and compressive
crushing tests. The study results revealed that the water absorption of SAD-blended
samples was found to rise with increasing percentage replacement with SAD. Also,
the study revealed that beyond 10% replacement with SAD, the investigated properties
fall below the required limits as stated in relevant standards. SBs blended
Keywords
Q Science (General), TH Building construction