Effect of Phosphogypsum on the Properties of Over-Sulfur Phosphogypsum–Ground Granulate Blast-Furnace Slag Cement

Zhi Jiang Lv; Zong Shou Lin; Hao Jie Wang

doi:10.4028/www.scientific.net/AMM.638-640.1453

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 638-640Effect of Phosphogypsum on the Properties of...

Effect of Phosphogypsum on the Properties of Over-Sulfur Phosphogypsum–Ground Granulate Blast-Furnace Slag Cement

Abstract:

Over-sulfur phosphogypsum(PG)–ground granulate blast-furnace slag(GGBFS) cement paste is utilized by GGBFS, Portland cement clinker(PCC), additive, water and modificated phosphogypsum paste(MPG), produced by milling PG mixed with a certain proportion of steel slag(SS), GGBFS and water. The effect of PG on the properties of over-sulfur PG– GGBFS cement was investigated. The mechanical performances and hydration mechanism of the cement with different kinds, proportions and particle size of PG were analyzed based on setting time, volume stability, strength test, XRD and SEM analyses. The experimental results show that,the optimum mixture of PG amount in the binder was 45%. Overdose of PG may caused strength deterioration. The optimum grinding time of MPG in the binder was 20min. The soluble phosphorus content of PG in the binder was under 0.05%.

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Periodical:

Applied Mechanics and Materials (Volumes 638-640)

Pages:

1453-1459

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.638-640.1453

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Online since:

September 2014

Authors:

Zhi Jiang Lv*, Zong Shou Lin, Hao Jie Wang

Keywords:

Modificate, Phosphogypsum, Soluble Phosphorus

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