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Water permeability of lightweight aggregate concrete

Sulaiman, Suhaizad and Lee, Yee Loon and Koh , Heng Boon and Leong Wu, Ting Water permeability of lightweight aggregate concrete. In: 8th International Conference on Concrete Engineering and Technology (CONCET 2004), 19-21 April 2004, Pulau Langkawi, Kedah.

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Abstract

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.

Item Type: Conference or Workshop Item (Paper)
Subjects: T Technology > TA Engineering (General). Civil engineering (General) > TA401-492 Materials of engineering and construction. Mechanics of materials
Depositing User: Normajihan Abd. Rahman
Date Deposited: 07 Nov 2012 04:32
Last Modified: 07 Nov 2012 04:32
URI: http://eprints.uthm.edu.my/id/eprint/2633
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