Browsing Khairul Nizar Ismail, Associate Professor Dr. by Author "Luqman, Musa"

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    • Effect of curing profile on kaolin-based geopolymers 

      Heah, Cheng Yong; Kamarudin, Hussin; Mohd Mustafa, Al Bakri Abdullah; Mohammed Amjad, Hussain; Luqman, Musa; Khairul Nizar, Ismail; Che Mohd Ruzaidi, Ghazali; Liew Yun, Ming (Elsevier B.V., 2011)
      Depending on the processing conditions, geopolymers can exhibit a wide variety of properties and characteristics. Curing profile serves as a crucial parameter in synthesis of geopolymers. In this paper, the influence of ...

    • Effect of curing regimes on metakaolin geopolymer pastes produced from geopolymer powder 

      Liew, Yun Ming; Kamarudin, Hussin, Brig. Jen. Dato' Prof. Dr.; Mohd Mustafa Al Bakri, Abdullah; Mohammed, Bnhussain; Luqman, Musa; Khairul Nizar, Ismail, Prof. Madya Dr.; Che Mohd Ruzaidi, Ghazali, Prof. Madya; Cheng, Yong Heah (Scientific.Net/Trans Tech Publications, 2012-12)
      The properties of metakaolin geopolymer paste are affected by the alkali concentration, the initial raw materials, solidification process, and amount of mixing water as well as the curing conditions. This study aimed to ...

    • Strength and microstructural properties of mechanically-activated kaolin geopolymers 

      Cheng, Yong Heah; Kamarudin, Hussin, Brig. Jen. Dato' Prof. Dr.; Mohd Mustafa Al Bakri, Abdullah; Mohammed, Bnhussain; Luqman, Musa; Khairul Nizar, Ismail; Che Mohd Ruzaidi, Ghazali, Prof. Madya; Liew, Yun Ming (Trans Tech Publications, 2012-12)
      Kaolin geopolymers exhibit low strength properties due to its plate-like nature which contribute to smaller surface area for geopolymerization reactions. Layered kaolin structure only allows very little, if any, substitution ...

    • Study on solids-to-liquid and alkaline activator ratios on kaolin-based geopolymers 

      Cheng, Yong Heah; Kamarudin, Hussin, Brig. Gen. Dato' Prof. Dr.; Mohd Mustafa Al-Bakri, Abdullah; Mohammed, Hussain; Luqman, Musa; Khairul Nizar, Ismail, Assoc. Prof. Dr.; Che Mohd Ruzaidi, Ghazali; Liew, Yun Ming (Elsevier Ltd., 2012-10)
      Kaolin and alkali activator were mixed with the solids-to-liquid ratios in range of 0.60-1.20 (Al 2O 3/Na 2O molar ratio of 0.63-1.27). Sodium silicate and sodium hydroxide ranged between 0.16 and 0.36 (SiO 2/Na 2O molar ...