Study on Utilization of Silica-Calcium Tailings in Concrete

Xiao Wu Tian; Wei Guo Shen; Lai Shan; Liang Hong Cao; Qing Lan; Zi Li Lu

doi:10.4028/www.scientific.net/KEM.599.93

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Study on Mechanical and Thermal Properties of Graphite Modified Cement Concrete
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Study on Preparation of Low-Thermal Expansion Coefficient Concrete with Fly Ash
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Study on Utilization of Silica-Calcium Tailings in Concrete
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HomeKey Engineering MaterialsKey Engineering Materials Vol. 599Study on Utilization of Silica-Calcium Tailings in...

Study on Utilization of Silica-Calcium Tailings in Concrete

Abstract:

The large production of tailings has caused soil, water and air pollution and serious potential safety hazard. The composition, particle morphology, particle size distribution of the silica-calcium tailings are investigated to assess the feasibility of using it in concrete in this paper. The silica-calcium tailings are mainly composed of quartz, calcite and dolomite. The results show that the tailings powder can stimulate the hydration of cement and fill the gradation gap between fine aggregate and cementitious materials in concrete as micronized sand to meet the requirements of concrete. The incorporation of silica-calcium tailings in concrete reduces the ultimate total shrinkage, autogenous shrinkage and drying shrinkage at early age.

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Periodical:

Key Engineering Materials (Volume 599)

Pages:

93-97

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.599.93

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Online since:

February 2014

Authors:

Xiao Wu Tian, Wei Guo Shen*, Lai Shan, Liang Hong Cao, Qing Lan, Zi Li Lu

Keywords:

Concrete, Filler, Micronized Sand, Silica-Calcium, Tailings

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* - Corresponding Author

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