Now showing items 41-54 of 54

    • Review of the characterization and processing of palm ash as a geopolymer composite 

      Zarina, Yahya; Mohd Mustafa Al-Bakri, Abdullah; Kamarudin, Hussin, Brig. Jen. Dato' Prof. Dr.; Khairul Nizar, Ismail, Assoc. Prof. Dr. (American Scientific Publishers, 2013-01)
      Malaysia is the world's largest producer and exporter of palm oil and it produces a million tons of palm oil waste annually. Palm ash is a by-product from the use of palm oil shells and palm oil bunches, which are used to ...
    • Comparison of original and sintered LUSI mud from East Java, Indonesia as raw material for making a geopolymer 

      Rafiza, Abdul Razak; Mohd Mustafa Al Bakri, Abdullah; Kamarudin, Hussin, Brig. Jen. Dato' Prof. Dr.; Djwantoro, Hardjito, Dr.; Khairul Nizar, Ismail, Assoc. Prof. Dr. (American Scientific Publishers, 2013-01)
      This paper presents the characterization of LUSI mud from East Java, Indonesia, as a potential raw material for making a geopolymer. Two types of LUSI mud were analyzed, i.e., original LUSI mud and LUSI mud that had been ...
    • Study on physical and chemical properties of fly ash from different area in Malaysia 

      Khairul Nizar, Ismail, Assoc. Prof. Dr.; Mohd Mustafa Al-Bakri, Abdullah; Rafiza, Abdul Razak; Kamarudin, Hussin, Brig. Jen. Dato' Prof. Dr.; Alida, Abdullah; Zarina, Yahya (Trans Tech Publications, 2013-12)
      Fly ash is residue from the combustion of coal which widely available in worldwide and lead to waste management proposal. Moreover, the use of fly ash is more environmental friendly and save cost compared to OPC. Fly ash ...
    • Chemical and physical characterization of boiler ash from palm oil industry waste for geopolymer composite 

      Zarina, Yahya; Mohd Mustafa, Al Bakri Abdullah; Kamarudin, Hussin; Khairul Nizar, Ismail; Andrei Victor, Sandu; Petricǎ, Vizureanu; Rafiza, Abdul Razak (Syscom 18 SRL/ SC BIBLIOTECA CHIMIEI SA, 2013-12)
      The characterizations of boiler ash waste from waste of palm oil industry were performed. The boiler ash was obtained from the boiler in the palm oil processing factory. The chemical and physical characterization has been ...
    • Fire resistance evaluation of lightweight geopolymer concrete system exposed to elevated temperatures of 100-800 °C 

      Omar A., Abdulkareem; Mohd Mustafa Al-Bakri, Abdullah; Kamarudin, Hussin, Brig. Jen. Dato' Prof. Dr.; Khairul Nizar, Ismail, Assoc. Prof. Dr. (Trans Tech Publications, 2014)
      This paper reports the fire resistance property of a lightweight aggregate geopolymer concrete (LWAGC) material synthesized by the alkali-activation of locally source fly ash (FA) after exposed to elevated temperatures ...
    • Physicochemical properties of pyrolitic carbon black from waste tyres 

      Umi Fazara, Md. Ali, Dr.; Ishak, Jainoo; Khairul Nizar, Ismail, Assoc. Prof. Dr.; Kamarudin, Hussin, Brig. Jen. Dato' Prof. Dr.; Fahmi, Muhammad Ridwan, Dr. (Trans Tech Publications, 2014)
      Waste tyres which are mainly generated from automotive industries have become a major environmental problem to the local authorities, the tyre industries and tyre dealer. When tyres are no longer usable due to worn-out, ...
    • Microstructure study on volcano ash geopolymer aggregate at different sintering temperature 

      Rafiza, Abdul Razak; Mohd Mustafa Al Bakri, Abdullah; Kamarudin, Hussin, Brig. Jen. Dato' Prof. Dr.; Khairul Nizar, Ismail, Assoc. Prof. Dr.; Djwantoro, Hardjito, Dr.; Wan Hamidon Wan Badaruzzaman, Ir. Dr.; Zarina, Yahya (Trans Tech Publications, 2014)
      Recent research shows that the by-product materials such as fly ash can be used as raw material in producing aggregates and lightweight aggregates. The usage of this material can improve the quality of the aggregates ...
    • Influence of dolomite on the mechanical properties of boiler ash geopolymer paste 

      Zarina, Yahya; Kamarudin, Hussin, Brig. Jen. Dato' Prof. Dr.; Mohd Mustafa Al-Bakri, Abdullah; Khairul Nizar, Ismail, Assoc. Prof. Dr.; Rafiza, Abdul Razak (Trans Tech Publications, 2014)
      The waste material from palm oil industry has been increasing since Malaysia was the world largest exported of palm oil mill. The waste such as palm fibers, nut shells, palm kernel and empty fruit bunches are the solid ...
    • Effects of elevated temperatures on the thermal behavior and mechanical performance of fly ash geopolymer paste, mortar and lightweight concrete 

      Omar A., Abdulkareem; Mohd Mustafa Al Bakri, Abdullah; Kamarudin, Hussin, Brig. Jen. Dato' Prof. Dr.; Khairul Nizar, Ismail, Dr.; Saif, Ala’eddin A. (Elsevier, 2014-01)
      This paper reports a comparative study of the influence of elevated temperature on geopolymer paste, mortars and lightweight aggregate geopolymer concrete (LWAGC) systems made by using fly ash (FA) as only source material. ...
    • Effect of NaOH concentration on microstructure of boiler ash based geopolymer 

      Zarina, Yahya; Mohd Mustafa, Al Bakri Abdullah; Kamarudin, Hussin; Khairul Nizar, Ismail; Abdul Rahim, Abdul Razak (Trans Tech Publications Ltd., 2015)
      Boiler ash is one of the waste material from palm oil processing industry and it was widely available. The role of alkaline activator in geopolymer is important for its mechanical properties. NaOH and sodium silicate ...
    • Effect of Solids-To-Liquids, Na2SiO3-To-NaOH and Curing Temperature on the Palm Oil Boiler Ash (Si + Ca) Geopolymerisation System 

      Zarina, Yahya; Mohd Mustafa Al Bakri, Abdullah; Kamarudin, Hussin; Khairul Nizar, Ismail; Rafiza, Abd Razak; Sandu, Andrei Victor (MDPI AG, 2015)
      This paper investigates the effect of the solids-to-liquids (S/L) and Na2SiO3/NaOH ratios on the production of palm oil boiler ash (POBA) based geopolymer. Sodium silicate and sodium hydroxide (NaOH) solution were used as ...
    • Optimization of NaOH Molarity, LUSI Mud/Alkaline Activator, and Na2SiO3/NaOH Ratio to Produce Lightweight Aggregate-Based Geopolymer 

      Rafiza, Abdul Razak; Mohd Mustafa Al Bakri, Abdullah; Kamarudin, Hussin; Khairul Nizar, Ismail; Djwantoro, Hardjito; Zarina, Yahya (MDPI AG, 2015-05-21)
      This paper presents the mechanical function and characterization of an artificial lightweight geopolymer aggregate (ALGA) using LUSI (Sidoarjo mud) and alkaline activator as source materials. LUSI stands for LU-Lumpur and ...
    • Properties of hooked steel fibers reinforced alkali activated material concrete 

      Meor Ahmad Faris, Meor Ahmad Tajudin; Mohd Mustafa Al Bakri, Abdullah; Khairul Nizar, Ismail; Ratnasamy, Muniandy; Aiman, Mahmad Nor; Ramadhansyah, Putra Jaya; Warid Wazien, Ahmad Zailani‬ (EDP Sciences, 2016)
      In this study, alkali activated material was produced by using Class F fly ash from Manjung power station, Lumut, Perak, Malaysia. Fly ash then was activated by alkaline activator which is consisting of sodium silicate ...
    • Strength, density and water absoprtion of Palm oil boiler ash (POBA) geopolymer brick/IBS brick 

      Zarina, Yahya; Kamarudin, Hussin; Mohd Mustafa Al Bakri, Abdullah; Khairul Nizar, Ismail; Rafiza, Abd Razak (Trans Tech Publications Ltd., 2016-01)
      Geopolymer or alkali-activated binder is produced by synthesizing aluminosilicate source materials with an alkaline activator solution. This study has been conducted to produce palm oil boiler ash (POBA) geopolymer brick/IBS ...