Explanipedia

Turning waste into strength: Enhancing geopolymer composites with Oil Palm Frond Fibers (OPF) Open

Ng Hui-Teng, Liew Yun-Ming, Heah Cheng-Yong, Tan Jin, Tan You How , et al. · 2024

Geopolymers are alternatives to ordinary Portland cement as construction materials. The increasing demand for sustainable construction materials has driven the utilization of industrial by-products and agricultural waste. The disposal of o…

Improvements of Flexural Properties and Thermal Performance in Thin Geopolymer Based on Fly Ash and Ladle Furnace Slag Using Borax Decahydrates Open

Ng Yong-Sing, Liew Yun-Ming, Heah Cheng-Yong, Mohd Mustafa Al Bakri Abdullah, Phakkhananan Pakawanit , et al. · 2022

This paper elucidates the influence of borax decahydrate addition on the flexural and thermal properties of 10 mm thin fly ash/ladle furnace slag (FAS) geopolymers. The borax decahydrate (2, 4, 6, and 8 wt.%) was incorporated to produce FA…

Preparation of Fly Ash-Ladle Furnace Slag Blended Geopolymer Foam via Pre-Foaming Method with Polyoxyethylene Alkyether Sulphate Incorporation Open

Ng Hui-Teng, Heah Cheng-Yong, Liew Yun-Ming, Mohd Mustafa Al Bakri Abdullah, Catleya Rojviriya , et al. · 2022

This paper uses polyoxyethylene alkyether sulphate (PAS) to form foam via pre-foaming method, which is then incorporated into geopolymer based on fly ash and ladle furnace slag. In the literature, only PAS-geopolymer foams made with single…

Comparative mechanical and microstructural properties of high calcium fly ash one-part geopolymers activated with Na2SiO3-anhydrous and NaAlO2 Open

Ooi Wan-En, Liew Yun-Ming, Heah Cheng-Yong, Mohd Mustafa Al Bakri Abdullah, Long-yuan Li , et al. · 2021

This paper investigates the effect of varying solid alkali activators on the fresh and hardened properties and microstructural changes of one-part geopolymers (OPGs). Single and binary solid alkali activators were used to activate high cal…

Cold-pressed fly ash geopolymers: effect of formulation on mechanical and morphological characteristics Open

Ong Shee-Ween, Heah Cheng-Yong, Liew Yun-Ming, Mohd Mustafa Al Bakri Abdullah, Li‐Ngee Ho , et al. · 2021

This research uses low alkali activator content and cold pressing technique for fly ash-based geopolymers formation under room temperature condition. The geopolymers were prepared using four different parameters: fly ash/alkali activator r…

Evaluation of flexural properties and characterisation of 10-mm thin geopolymer based on fly ash and ladle furnace slag Open

Ng Yong-Sing, Liew Yun-Ming, Heah Cheng-Yong, Mohd Mustafa Al Bakri Abdullah, Lynette Wei Ling Chan , et al. · 2021

Effect of Silica Fume and Alumina Addition on the Mechanical and Microstructure of Fly Ash Geopolymer Concrete Open

Fong Sue Min, Heah Cheng-Yong, Liew Yun-Ming, Mohd Mustafa Al Bakri Abdullah, Hasniyati Md Razi , et al. · 2021

This paper discussed the effect of the addition of silica fume (2 wt.% and 4 wt.%) and alumina (2 wt.% and 4 wt.%) on the properties of fly ash geopolymer concrete. The fly ash geopolymer concrete achieved the highest 28-day compressive st…

Formulation, mechanical properties and phase analysis of fly ash geopolymer with ladle furnace slag replacement Open

Ng Hui-Teng, Heah Cheng-Yong, Liew Yun-Ming, Mohd Mustafa Al Bakri Abdullah, Kong Ern Hun , et al. · 2021

Evaluation of the Effect of Silica Fume on Amorphous Fly Ash Geopolymers Exposed to Elevated Temperature Open

Ong Huey Li, Liew Yun-Ming, Heah Cheng-Yong, Ridho Bayuaji, Mohd Mustafa Al Bakri Abdullah , et al. · 2021

The properties of amorphous geopolymer with silica fume addition after heat treatment was rarely reported in the geopolymer field. Geopolymer was prepared by mixing fly ash and alkali activator. The silica fume was added in 2% and 4% by we…

STUDY OF FLY ASH GEOPOLYMER AND FLY ASH/SLAG GEOPOLYMER IN TERM OF PHYSICAL AND MECHANICAL PROPERTIES Open

Ng Hui-Teng, Heah Cheng-Yong, M. M. A. Abdullah, Ng Yong-Sing, Ridho Bayuaji · 2020

This article presents the mixing parameters of fly ash geopolymer based on NaOH concentration (6M - 14M), S/L ratio (1.0 - 3.5), Na2SiO3/NaOH ratio (1.0 - 3.0) and ladle furnace slag replacement (10% -40%). Additionally, a comparative stud…

Effect of Solid-to-Liquid Ratio on Thin Fly Ash Geopolymer Open

Ng Yong-Sing, Liew Yun-Ming, Mohd Mustafa Al Bakri Abdullah, Ng Hui-Teng, Hussin Kamarudin , et al. · 2020

The present work studies the effect of solid-to-liquid (S/L) ratio on the properties of thin fly ash-based geopolymer. The fly ash geopolymers with dimension of 160 mm × 40 mm × 10 mm were synthesised by using various S/L ratios (1.5, 2.0,…

Microstructural Analysis of Fly Ash-based Geopolymers with various Alkali Concentration Open

Ng Hui-Teng, Heah Cheng-Yong, Liew Yun-Ming, Mohd Mustafa Al Bakri Abdullah, Ng Yong-Sing · 2019

In the present work, a comparative study on the effect of different concentration of sodium hydroxide (NaOH) on fly ash-based geopolymer was investigated. The geopolymer synthesis by mixing fly ash with alkali activator (a mixture of NaOH …

Correlation of Microstructure and Flexural Strength of Fly Ash Geopolymer of Varying Molarities Open

Ng Yong-Sing, Liew Yun-Ming, Heah Cheng-Yong, Mohd Mustafa Al Bakri Abdullah, Ng Hui-Teng , et al. · 2019

The present work studies and compares the flexural properties of fly ash geopolymer with varying molarity of sodium hydroxide (NaOH). Different molarities of NaOH solution (6M, 8M, 10M, 12M and 14M) are used to prepare the alkali activator…

Effect of molarity of sodium hydroxide on fly ash geopolymer tiles Open

Ng Yong-Sing, Liew Yun-Ming, Heah Cheng-Yong, Mohd Mustafa Al Bakri Abdullah · 2018

The present work investigates the physical and mechanical properties of fly ash geopolymer tiles with varying molarity of sodium hydroxide. The alkali activator used in this study is the mixture of sodium hydroxide (NaOH) and sodium silica…

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