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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/50369

Title: Mechanical and Microstructural Characterization of Alkali-Activated Materials Based on Fly Ash and Slag
Authors: Maochieh Chi
Yenchun Liu
Ran Huang
Contributors: 國立臺灣海洋大學:河海工程學系
Date: 2015-02
Issue Date: 2018-10-05T08:00:47Z
Publisher: IACSIT International Journal of Engineering and Technology
Abstract: Abstract: This study investigates the mechanical and microstructural characterization of alkali-activated fly ash/slag (AAFS) mortars with various ratios of fly ash to slag. The liquid/binder ratios of 0.35, 0.5 and 0.65 are considered for the AAFS mortars. 4% Sodium oxide (Na 2 O) concentration of cementitious material weight in mixture and liquid sodium silicate with modulus ratio (mass ratio of SiO 2 to Na 2 O) of 1 were used as alkaline activators to alkali-activate various fly ash/slag ratios. Compressive strength test, water absorption test, drying shrinkage test, scanning electron microscopy (SEM) and X-ray diffraction (XRD) analysis were conducted. Test results reveal that both fly ash/slag ratio and the liquid/binder ratio are two significant factors influencing the mechanical and microstructural characterization of AAFS mortars. The hydration products of AAFS mortars are mainly amorphous alkaline aluminosilicate and low-crystalline calcium silicate hydrate gel. Index Terms—Alkali-activated fly ash/slag, liquid/binder ratio, scanning electron microscopy (SEM), X-ray diffraction (XRD).
Relation: 7(1)
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/50369
Appears in Collections:[河海工程學系] 期刊論文

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