Z
Zarina Yahya
Researcher at Universiti Malaysia Perlis
Publications - 49
Citations - 629
Zarina Yahya is an academic researcher from Universiti Malaysia Perlis. The author has contributed to research in topics: Geopolymer & Fly ash. The author has an hindex of 8, co-authored 42 publications receiving 398 citations.
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Journal ArticleDOI
Fly Ash-based Geopolymer Lightweight Concrete Using Foaming Agent
Mohd Mustafa Al Bakri Abdullah,Kamarudin Hussin,Mohamed Bnhussain,Khairul Nizar Ismail,Zarina Yahya,Rafiza Abdul Razak +5 more
TL;DR: The results showed that the sample which was cured at 60 °C (LW2) produced the maximum compressive strength for all tests, and the LW2 sample had a denser matrix than LW1, which was because LW2 was heat cured, which caused the geopolymerization rate to increase, producing a densing matrix.
Journal ArticleDOI
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,Andrei Victor Sandu +5 more
TL;DR: In this article, the effect of solids-to-liquids (S/L) and Na2SiO3/NaOH ratios on the production of palm oil boiler ash (POBA) based geopolymer was investigated.
Journal ArticleDOI
Geopolymer as underwater concreting material: A review
Fakhryna Hannanee Ahmad Zaidi,Romisuhani Ahmad,Mohd Mustafa Al Bakri Abdullah,Shayfull Zamree Abd Rahim,Zarina Yahya,Long-yuan Li,Ratna Ediati +6 more
TL;DR: In this paper, a review of the use of geopolymer as an underwater concreting material is presented, highlighting that the requirements for underwater concrete should include washout resistivity, workability and durability in addition to high strength.
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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 +5 more
TL;DR: The results show that the optimum NaOH molarity found in this study is 12 M due to the highest strength (lowest AIV value) of 15.79% with lower water absorption and specific gravity, which contributes to highest strength of ALGA produced.
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Influence of Kaolin in Fly Ash Based Geopolymer Concrete: Destructive and Non-Destructive Testing
TL;DR: In this paper, the feasibility of fly ash-based geopolymer concrete to which kaolin has been added was investigated and compressive strength, flexural strength, rebound hammer and ultrasonic pulse velocity (UPV) result have been obtained.