Paper Title:
Research on the Strengthening Effect of Phosphorus Slag Powder on Cement-Based Materials
  Abstract

The strengthening effect of phosphorus slag powder (PSP) in cement-based materials was researched by model of strengthening effect of mineral admixes, and the mechanism of strengthening effect of PSP was also studied by SEM. The results indicate that, in early hydration period, the strengthening effect of PSP on strength of cement mortars is zero. At 90 days, strengthening effect has been exerted, and increases with the amount of PSP when that is no more than 40%, but decreases with larger content of PSP. At 180 days, the strengthening effect was further enhanced, the greater the amount of PSP, the greater its effect. For compressive strength of cement mortars, the strengthening effect of PSP is more than that of PSP on flexural strength. The results analyses of SEM show that, strengthening effect of PSP mainly come from its pozzolana reaction. With double excitation of cement hydration product hydroxide and gypsum, the low alkalinity C-S-H was produced.

  Info
Periodical
Key Engineering Materials (Volumes 405-406)
Edited by
Hao-Wen YE and Gai-Fei PENG
Pages
356-360
DOI
10.4028/www.scientific.net/KEM.405-406.356
Citation
D. M. Liu, K. H. Fang, H. S. Yang, "Research on the Strengthening Effect of Phosphorus Slag Powder on Cement-Based Materials", Key Engineering Materials, Vols. 405-406, pp. 356-360, 2009
Online since
January 2009
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Price
$32.00
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