Rational mix design of lightweight concrete for optimum strength
In this study, structural lightweight concretes produced by Coarse lightweight Crushed brick and Fine light weight crushed brick (CLWA & FLWA) were investigated. Compressive strength and Density of the concretes were determined in order to make some procedures for mix design of lightweight c...
| Main Authors: | , |
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| Format: | Conference or Workshop Item |
| Language: | English |
| Published: |
2008
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| Subjects: | |
| Online Access: | http://eprints.usm.my/34443/ http://eprints.usm.my/34443/1/HBP11.pdf |
| Summary: | In this study, structural lightweight concretes produced by Coarse
lightweight Crushed brick and Fine light weight crushed brick (CLWA &
FLWA) were investigated. Compressive strength and Density of the
concretes were determined in order to make some procedures for mix design
of lightweight concrete. In producing the mixtures, superplasticizer (SP) was
used in 1% of cement weight to improve the workability. In conclusion, the
fresh density of lightweight concrete with fully replacement of sand by FLWA
was decreased by about 200 kg/m3 compared with the mix of fully sand as
fine aggregate with no reduction for the compressive strength. It was
concluded also that the voids between fine aggregate particles (sand +
FLWA) affect on the compressive strength of the mix especially at 28 days.
This study suggests inclusion of the voids between fine aggregate particles
as a significant factor affects on the compressive strength of lightweight
concrete. |
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