Effect of various commercial of Na2SiO3 on compressive strength of Fly ash-based alkaline activated mortar

被引：0
|
作者：
Elbasir, Otman M. M. [1 ]
Mijarsh, M. J. A. [2 ]
Johari, Megat Azmi Megat [3 ]
Mashri, Mohamed O. M. [3 ]
Karolina, Rahmi [4 ]
Ahmad, Zainal Arifin [5 ]
机构：
[1] High Inst Sci & Technol, Dept Civil Engn, Qaser Bin Gashear, Libya
[2] Elmergib Univ, Dept Civil Engn, Fac Engn, Al Khums, Libya
[3] Univ Sains Malaysia, Sch Civil Engn, Engn Campus, Nibongtebal 14300, Penang, Malaysia
[4] Univ Sumatera Utara, Doctoral Program, Civil Engn Dept, Medan, Indonesia
[5] Univ Sains Malaysia, Sch Mat & Mineral Resources Engn, Struct Mat Niche Area, Nibongtebal 14300, Penang, Malaysia
来源：
2ND TALENTA CONFERENCE ON ENGINEERING, SCIENCE AND TECHNOLOGY | 2020年 / 801卷
关键词：
GEOPOLYMER MORTAR; SIO2/NA2O RATIO; POWDER; TEMPERATURE; REACTIVITY;
D O I：
10.1088/1757-899X/801/1/012078
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This study aimed to assesses the effect of various commercial Na2SiO3 on the compressive strength (CS) of alkaline activated fly ash mortar (AAFM). The three mixture of alkaline activated mortar (AAM) C1, C2 and C3 were prepared from the source material of fly ash and alkaline activator solution (AAS). The initial AAS was comprised of NaOH (10M) and various grade of Na2SiO3. The various grades of Na2SiO3 were characterized by their SiO2/Na2O molar ratio of 2.0, 2.2, and 3.3, respectively. The sample from each mixture was characterized based on the CS and microstructure changes using useful tools of XRD and FTIR analysis. The results obtained indicated that the highest CS achieved among the three mixtures were 48.23MPa of mixture C2 prepared with SiO2/Na2O molar ratio of 2.2. This was mainly due to higher binder formation (N-A-S-H gel type) and a higher rate of reaction of the main source material. This result is in line with XRD and FTIR analysis results finding.
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页数：8
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