Hydration Characteristics and Hydration Products of Tricalcium Silicate Doped with Superplasticizer and Silica Fume

Qing Jun Ding; Yu Wang; Xiu Lin Huang

doi:10.4028/www.scientific.net/AMR.233-235.2589

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 233-235Hydration Characteristics and Hydration Products...

Hydration Characteristics and Hydration Products of Tricalcium Silicate Doped with Superplasticizer and Silica Fume

Abstract:

By using XRD, isothermal microcalorimetry, ESEM, EDS, NMR, the effects silica fume and polycarboxylate superplasticizer (PC) on the hydration behavior of tricalcium silicate (C₃S) paste were researched. The results show that: PC suppresses the hydration of C₃S while silica fume promotes the hydration of C₃S by consumption of generated Ca(OH)₂. Both PC and silica fume change the morphology of hydration products C-S-H gel from needle-bar-like to reunion-like, along with the polymerization state of silicon-oxygen tetrahedron varied greatly. Especially silica fume significantly affects Q¹, Q² percentage of silicon-oxygen tetrahedron.

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Periodical:

Advanced Materials Research (Volumes 233-235)

Pages:

2589-2594

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.233-235.2589

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Online since:

May 2011

Authors:

Qing Jun Ding, Yu Wang, Xiu Lin Huang

Keywords:

Hydration, Polycarboxylate Superplasticizer (PCE), Silica Fume (SF), Tricalcium Silicate

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