Roshazita Che AmatThis page provides access to scholarly publications by UniMAP Faculty members and researchers.http://dspace.unimap.edu.my:80/xmlui/handle/123456789/399132024-03-28T19:22:13Z2024-03-28T19:22:13ZStudy on Characteristics of Lightweight Aggregate Concrete Made From Foam and Ordinary Portland CementNorlia, Mohamad IbrahimK.N., IsmailShamshinar, SalehuddinRoshazita, Che AmatAbdul Rahim, Abdul RazakZaity Syazwani, Mohd Odlihttp://dspace.unimap.edu.my:80/xmlui/handle/123456789/685112020-10-26T05:00:08Z2016-01-01T00:00:00ZStudy on Characteristics of Lightweight Aggregate Concrete Made From Foam and Ordinary Portland Cement
Norlia, Mohamad Ibrahim; K.N., Ismail; Shamshinar, Salehuddin; Roshazita, Che Amat; Abdul Rahim, Abdul Razak; Zaity Syazwani, Mohd Odli
The production and characteristic of lightweight bubble aggregates (LBA) are presented in this paper. The LBA are produced by
mixing between the foam and ordinary Portland cement according to the composition which has been set. Then, the characteristics of LBA such as density, water absorption, specific gravity, compressive strength, aggregate impact value and microscopic analysis of the LBA are analyzed. Those characteristics are identified in order to ensure that the LBA are
successfully categorized into lightweight aggregate. The loose bulk density is obtained at 812.5 kg/m3 which can be categorized under lightweight aggregate group. For water absorption the value obtained is 9.7 % which is slightly higher compared to normal aggregate. Meanwhile the average specific gravity obtained for the samples of LBAis 1.75. Compressive strength for the aggregates was 17.76 MPa. The highest compressive strength for LBA foamed concrete was obtained at 25% replacement with
7.83MPa. Thus, the LBA have a significant features and characteristics that can be used as coarse aggregates in concrete.
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2016-01-01T00:00:00ZThe utilization of aluminum waste as sand replacement in concreteNur Liza, RahimNorlia, Mohamad IbrahimShamshinar, SalehuddinRoshazita, Che AmatSyakirah Afiza, MohammedCik Roziana, Hibadullahhttp://dspace.unimap.edu.my:80/xmlui/handle/123456789/414772016-05-06T09:09:08Z2014-01-01T00:00:00ZThe utilization of aluminum waste as sand replacement in concrete
Nur Liza, Rahim; Norlia, Mohamad Ibrahim; Shamshinar, Salehuddin; Roshazita, Che Amat; Syakirah Afiza, Mohammed; Cik Roziana, Hibadullah
Development activities in construction sector have caused serious problems throughout the world as the natural resource depletion and produce large amounts of waste. In Malaysia, the main problem appeared when most of the waste was abandoned and not recycling. Such conditions can cause serious problem such as environmental pollution. This research utilizes aluminum waste as sand replacement in concrete. The use of these materials not only helps in the natural resources such as sand, aggregate, cement and other building. However, it also helps in reducing the manufacturing cost of the concrete. In addition, the reduction in the cost of waste disposal, saving manpower and protect the environment from the effects of pollution are the benefits derived from the use of waste materials. A study was conducted on the use of recyclable aluminum materials, as sand replacement material in concrete mix with replacement of 1%, 2% and 5%. Lab tests, including slump tests, compressive strength and water absorption were conducted in this study. As a result, samples containing 1% aluminum waste has better performance in terms of strength and containing 5% aluminum waste has good resistance to water absorption. Using aluminum waste in concrete is an interesting way in recycling waste thus can reduce waste disposal on sites and also can conserve the natural resources.
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2014-01-01T00:00:00ZProperties of lightweight bubbles aggregate (LBA) for the replacement of coarse aggregates in concreteNorlia, Mohamad IbrahimLeong Qi, WenRoshazita, Che AmatTaksiah, Abdul MajidNur Liza, RahimShamshinar, Shamsuddinhttp://dspace.unimap.edu.my:80/xmlui/handle/123456789/414762016-05-06T08:59:46Z2015-01-01T00:00:00ZProperties of lightweight bubbles aggregate (LBA) for the replacement of coarse aggregates in concrete
Norlia, Mohamad Ibrahim; Leong Qi, Wen; Roshazita, Che Amat; Taksiah, Abdul Majid; Nur Liza, Rahim; Shamshinar, Shamsuddin
The depletion of natural resources in the production of coarse aggregate are very crucial. Construction materials are solely depends on natural granite in the making of cement composite. Therefore, there is an urgency need to develop new alternatives material that can replace the usage of granite in concrete production. In this study, LBA have been produced to cater this problem. It is made from a mixture of bubbles from foam and ordinary portland cement. The ratio of the raw materials used is 1 part of bubbles and 2 part of ordinary Portland cement. Its manufacturing process does not involving any sintering process so it will part help to reduce energy comsuption at about 30%. The properties and characteristics of the LBA such as density, specific gravity, water absorption, strength were investigated. Results shown that the specific gravity of LBA was 1.00, water absorption was 19.44%, dry bulk density was between 730-800 kg/m3 and dry loose bulk density was ranged from 700 to 730 kg/m3 and the strength of aggregates is 14.00 MPa. It is found that the LBA can be used as a partial replacement of granite in the production of concrete.
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2015-01-01T00:00:00ZUtilization of recycled glass waste as partial replacement of fine aggregate in concrete productionNur Liza, RahimRoshazita, Che AmatNorlia, Mohamad IbrahimShamshinar, SalehuddinSyakirah Afiza, MohammedMustaqqim, Abdul Rahimhttp://dspace.unimap.edu.my:80/xmlui/handle/123456789/414752016-05-06T08:47:30Z2015-01-01T00:00:00ZUtilization of recycled glass waste as partial replacement of fine aggregate in concrete production
Nur Liza, Rahim; Roshazita, Che Amat; Norlia, Mohamad Ibrahim; Shamshinar, Salehuddin; Syakirah Afiza, Mohammed; Mustaqqim, Abdul Rahim
Glass dust waste creates chronic environmental problems, mainly due to the inconsistency of waste glass streams. Glass is widely used in our lives through manufactured products such as sheet glass, bottles, glassware, and vacuum tubing. Glass is an ideal material for recycling. The use of recycled glass helps in energy saving. The increasing awareness of glass recycling speeds up inspections on the use of waste glass with different forms in various fields. One of its significant contributions is to the construction field where the waste glass was reused for concrete production. The properties of concretes containing glass dust waste as fine aggregate were investigated in this study. Glass dust waste was used as a partial replacement for sand at 10%, 20% and 50% of concrete mixes. Compression strength for 7, 14 and 28 days concrete of age were compared with those of concrete made with natural fine aggregates. The results proved that highest strength activity given by glass dust waste after 28 days. The compressive strength of specimens with 10% glass dust waste content were 32.9373 MPa, higher than the concrete control specimen at 28 days. Using glass dust waste in concrete is an interesting possibility for economy on waste disposal sites and conservation of natural resources.
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2015-01-01T00:00:00Z