Water permeability of lightweight aggregate concrete
This paper reports the study of water permeability of self-compacting lightweight aggregate concrete. In this study, palm clinker (POC) is used to replace normal weight aggregates to produce lightweight concrete. There are two types of mix design in this project. The POC mix as the control mix and P...
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| Main Authors: | , , , |
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| Format: | Conference or Workshop Item |
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| Online Access: | http://eprints.uthm.edu.my/2633/ http://eprints.uthm.edu.my/2633/1/WATER_PERMEABILITY_OF_LIGHTWEIGHT_AGGREGATE.pdf |
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| Summary: | This paper reports the study of water permeability of self-compacting lightweight aggregate concrete.
In this study, palm clinker (POC) is used to replace normal weight aggregates to produce lightweight concrete. There
are two types of mix design in this project. The POC mix as the control mix and POC mix with 10 % Micronised
Silica (TIA 60) as the cement replacement material and superplasticizers (Rheobuild 1100) to produce the selfcompacting
lightweight concrete. The test cubes are 100 mm x 100 mm x 100 mm size and wet-cured. Slump test and
compacting factor test are carried out to measure the workability of the concrete. Durability of the concrete is
determined by the water permeability test based on ISO/DIS 7031, while the compressive strength of the hardened
concrete is measured based on BS 1881: Part 2. Water permeability test and compressive strength test are conducted
on the cubes of these two types of concrete mix at the age of 3 , 7 and 28 days. This self-compacting lightweight
concrete is exhibiting unique properties as low water / cement ratio below 0.5 exhibits high workability up to 150 mm
of slump. The self-compacting concrete requires minimal vibration to achieve high strength. The average coefficient
of water permeability is in the order of 10-11 m/s, which can be classified as an average quality concrete. The
reduction of density is approximately 11.2% compared with the OPC normal weight concrete. This concrete mix is
expected to be useful for the development of friction piles towards achieving technical, environmental and
economical advantages for the construction of soft soil foundation. |
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