Mohd Badrul Hisyam Ab Manaf
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Preferred name
Mohd Badrul Hisyam Ab Manaf
Official Name
Mohd Badrul Hisyam , Ab Manaf
Alternative Name
Ab Manaf, M. B.H.
Manaf, M. B.H.A.
Main Affiliation
Scopus Author ID
57432088400
57186594500
Researcher ID
R-6202-2019

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A study on the potential of geopolymer artificial aggregate as substitute for granite and limestone aggregate

2020-06-10 , Mohd Badrul Hisyam Ab Manaf , Abdul Razak R. , Muhamad K. , Mustaqqim Abdul Rahim , Ahmad M.M. , Hao T.P.

The aim of this research is to determine the potential of geopolymer artificial aggregate as substitute for granite and limestone aggregates. Several aggregate property test such as aggregate impact test, aggregate crushing test, specific gravity test, water absorption test and the Los Angeles Abrasion test are done on the aggregates. The fly ash-based geopolymer artificial aggregate is produced through geopolymerisation by mixing fly ash with alkaline solution. The results show that the fly ash-based geopolymer artificial aggregate is lighter than natural aggregate in term of its specific gravity. The impact value and crushing value for fly ash-based geopolymer artificial aggregate are slightly higher compared to natural aggregate while the water absorption value is much higher compared to natural aggregate. Furthermore, the fly ash-based geopolymer artificial aggregate has higher value in the Los Angeles Abrasion. Overall, the fly ash-based geopolymer artificial aggregate can be considered as one of the construction materials in the roadwork pavement and in concrete as an alternative for coarse aggregate besides natural aggregate with more lightweight properties.

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Substitution of Fly Ash as Mineral Filler in Wearing Course of Hot Mix Asphalt

2021-12-14 , Mohd Badrul Hisyam Ab Manaf , Mohd. Mustafa Al Bakri Abdullah , Razak R.A. , Ahmad M.M. , Rahim M.A. , Muda S.N.T.

Fly Ash (FA) is one of the sustainable materials to substitute Ordinary Portland Cement (OPC) was found commercialized in construction field but the usage in HMA pavement is limited. Thus, this study is important to promote FA as a sustainable filler instead of using OPC to reduce greenhouse gases. The primary aim is to investigate the Marshall Stability of HMA that incorporating of OPC and FA as filler. In addition, Optimum Bitumen Content (OBC) determination also conducted in this study. Marshall Stability test was conducted based on ASTM 2006 for both mixtures. The parameters gained from the test are the stability, flow, air void in mix (VIM), void filled bitumen (VFB) and stiffness being used to OBC. The OBC for HMA with OPC filler obtained is 5.06% meanwhile for HMA with FA is 4.79%. All Marshall Parameters was complied with of Malaysia Public Work Department (PWD) Standard for both mixtures. The HMA with FA filler give better results for all parameters. Based on OBC percentage, usage of asphalt binder was reduced at 0.29%. Thus, it was more economical if using FA compared with OPC as a filler. Furthermore, HMA with FA filler have better stability and strength as well as lesser deformation with HMA with OPC filler. For the overall, FA have huge potential in substituting other mineral filler to produce better quality of asphalt pavement.

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APPLICATION OF NATURAL FIBER FOR SHORT TERM STABILIZATION OF MARINE CLAY SLOPE

2020-01-01 , Ahmad M.M. , Zainol N.Z. , Mohd Badrul Hisyam Ab Manaf , Faisal A. , Mohd Zulham Affandi Mohd Zahid

Existence of marine clay in civil engineering field leading to further investigation on the properties as well as the method of stabilization. The aim of this study is to investigate the shear strength parameter of marine clay slope stabilized with kenaf fiber. Laboratory testing has been conducted to determine the marine clay and stabilized marine clay properties and its characteristic by using soil classification of particle size distribution, specific gravity, Atterberg limit and unconfined compression test. The result shows that the shear strength of marine clay reinforced with kenaf fiber is improved by increasing the percentage of kenaf fiber mixed into marine clay soil. The safety factor obtained from slope stability analysis shows that addition of kenaf fiber to the marine clay soil improves the marine clay slope stability. By adding 5% and 10% of kenaf fiber improves safety factor to more than 1.2 as required for most of temporary slope construction.

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