Study on Performance of Alkali-Activated Flyash-Based Geopolymer Reinforced by Silica Fume and Styrene-Acrylic Emulsion

Abstract:

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In order to improve the inherent fragility of alkali-activated fly ash-based geopolymer, the silica fume and styrene-acrylic emulsion were used to reinforce and toughen the geopolymer. The phase structure, morphology and chemical composition were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM) and X-ray fluorescence (XRF). The results showed that the mechanical properties of alkali-activated fly ash-based geopolymer were dramaticlly improved and the specimen with doping content of 10 wt% silica fume, 1wt% styrene-acrylic emulsion and 15wt% the alkaline excitation agent Na2SiO39H2O showed the highest compressive and flexural strengths of 42.11MPa and 5.30MPa in the ambient temperature curing 28d, respectively. SEM results indicated that doped silica fume and styrene-acrylic emulsion were embedded within the matrix of fly ash-based geopolymer. XRD results demonstrated that the mineral structures did not change obviously when silica fume and styrene-acrylic emulsion were added to the geopolymer

Info:

Periodical:

Advanced Materials Research (Volumes 374-377)

Edited by:

Hui Li, Yan Feng Liu, Ming Guo, Rui Zhang and Jing Du

Pages:

1632-1636

DOI:

10.4028/www.scientific.net/AMR.374-377.1632

Citation:

Y. C. Wang et al., "Study on Performance of Alkali-Activated Flyash-Based Geopolymer Reinforced by Silica Fume and Styrene-Acrylic Emulsion", Advanced Materials Research, Vols. 374-377, pp. 1632-1636, 2012

Online since:

October 2011

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$35.00

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