The energy absorption of modified foamed concrete with rice husk ash subjected to impact loading
RiceHusk Ash (RHA) as sand replacement and filler of Foamed Concrete (FC) has contributed to increase the strength. FC with RHA has increased the slab resistant of impact loading. When RHA granulate filled the FC porous, it would delay the collapsing of cell porous due to the increasing strain of po...
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| Main Authors: | , , , , |
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| Format: | Article |
| Published: |
Asian Research Publishing Network (ARPN)
2016
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| Subjects: | |
| Online Access: | http://eprints.uthm.edu.my/8575/ |
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| Summary: | RiceHusk Ash (RHA) as sand replacement and filler of Foamed Concrete (FC) has contributed to increase the
strength. FC with RHA has increased the slab resistant of impact loading. When RHA granulate filled the FC porous, it
would delay the collapsing of cell porous due to the increasing strain of porous walls. The RHA granulate increased the
elasticity of the porous walls of FC. Other than that, the walls porous would be more plastic when it was subjected to
compressive stress that generated by impact loading. The impact test conducted an instrument drop-weight impact tower to
generate various impact velocities of non-deformable impactor on slab of FC and FC with RHA. Results show that FC with
RHA created the crater without fragments. Means while, FC clearly create radial crack and fragments within the crater
field. However, both slab materials did not generate spalling nor scabbing upon impact and the influence of porosity
produces only local damage due to the mechanism of brittle crushing effect of porous walls. This investigation observed
that the energy absorption between FC and FC with RHA produced minor differences. However, the results verify that FC
with RHA did not loss its ability to absorb energy upon impact. |
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