In this study, the possibility of using corn cobs as an organic aggregate
in producing lightweight concrete has been investigated. First, some important physical properties of corn cob
have been determined in the laboratory. These properties are as follows: weight
to volume ratio (unit weight), water absorption rate and granulometric
analysis. Later on, 4 concrete mixtures have been prepared according to the workability of concrete
and standards
specified in Turkey. After that, unit weight, heat transmissibility coefficient
and 28-day pressure strength of these 4 concrete samples have been determined
using machines measuring these properties. The 28-day pressure endurance value
has been found between 1.4 - 56.25 kgf/cm2,heat transmissibility coefficient has been found between 0.19 -
0.35 Kcal/m∙h∙˚C and unit weight of samples have been found between 800 - 1520
kg/m3. Lastly, these
properties of concrete samples have been compared with other lightweight
materials being used in the construction of buildings.
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