Zulkarnain, Fahrizal and Ramli, Mahyuddin (2008) Durability performance of lightweight aggregate concrete for housing construction. In: 2nd International Conference on Built Environment in Developing Countries., 3rd- 4th December 2008, Universiti Sains Malaysia, Pulau Pinang.
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Abstract
Durability can be defined as the ability of material to withstand the effects of its environment. In the building material its may be interpreted as chemical attack, water absorption and carbonation. Chemical attack usually encountered as aggressive groundwater, particularly sulphate, polluted air and spillage of reactive liquids. A chemical aspect of durability is the stability of the material itself, particularly in the presence of moisture. Concrete made with lightweight aggregate exhibit a higher moisture movement than is the case with normal weight concrete. Based on the a 24 hr absorption test, lightweight aggregate generally absorbs from 5 to 20 percent by weight of dry aggregate, depending on the pore structure of the aggregate. The important difference is that the moisture content in lightweight aggregates is largely absorbed into the interior of the particles whereas in normal weight aggregates it is largely surface moisture. Rate of absorption in lightweight aggregates is a factor which also has a bearing on mix proportioning, handling, and control of concrete, and depends on the aggregate particle surface pore characteristics plus other factors.
| Item Type: | Conference or Workshop Item (Paper) |
|---|---|
| Subjects: | T Technology > TH Building construction > TH1-9745 Building construction |
| Divisions: | Pusat Pengajian Perumahan, Bangunan & Perancangan (School of Housing, Building & Planning) > International Conference on Built Environment in Developing Countries Koleksi Penganjuran Persidangan (Conference Collection) > International Conference on Built Environment in Developing Countries |
| Depositing User: | Mr Noorazilan Noordin |
| Date Deposited: | 22 May 2017 08:12 |
| Last Modified: | 22 May 2017 08:12 |
| URI: | http://eprints.usm.my/id/eprint/34451 |
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