Study on the Mechanical Properties and Microstructure of Concrete with Ultra-Lean Iron Ore

Wang Wenli; Long Yifei; Pan Chan; Guo Xiaoqin; Li Yangwei

doi:10.3969/j.issn.1000-6532.2023.03.012

2023 No. 3

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Article navigation > Multipurpose Utilization of Mineral Resources > 2023 > 44(3): 70-77

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Wang Wenli, Long Yifei, Pan Chan, Guo Xiaoqin, Li Yangwei. Study on the Mechanical Properties and Microstructure of Concrete with Ultra-Lean Iron Ore[J]. Multipurpose Utilization of Mineral Resources, 2023, 44(3): 70-77. doi: 10.3969/j.issn.1000-6532.2023.03.012

Citation:

Wang Wenli, Long Yifei, Pan Chan, Guo Xiaoqin, Li Yangwei. Study on the Mechanical Properties and Microstructure of Concrete with Ultra-Lean Iron Ore[J]. Multipurpose Utilization of Mineral Resources, 2023, 44(3): 70-77. doi: 10.3969/j.issn.1000-6532.2023.03.012

Study on the Mechanical Properties and Microstructure of Concrete with Ultra-Lean Iron Ore

1.
Wuhan Transportation Vocational College, Wuhan, Hubei, China
2.
Wuhan City College Urban Construction Department, Wuhan, Hubei, China

Received Date: 23 August 2021

Publish Date: 25 June 2023

Abstract

Abstract

This is a paper in the field of ceramics and composites. Ultra-lean iron ore was processed, and the ultra-lean iron ore with a good gradation was used as aggregate to prepare a new type of autoclaved aerated concrete block. Furthermore, the effects of different aggregate content, water-cement ratio and autoclave time on the performance and microstructure of autoclaved aerated concrete were studied. The results showed that with the increase of water-cement ratio, lime content, aggregate replacement rate and autoclave time, the compressive strength of concrete showed a trend of first increasing and then decreasing. When the replacement rate of ultra-lean iron ore aggregate was 40%, the amount of fly ash was 10%, the amount of lime was 18%, the amount of cement was 60%, the water-cement ratio was 0.45 and the autoclave time was 5h,the performance of concrete was at its best. At the same time, the incorporation of ultra-lean iron ore had a great impact on the generation of new phases, the concrete itself and the pore structure.
- Ultra-lean iron ore /
- Ceramics and composites. /
- Water-cement ratio /
- Lime content /
- Aggregate replacement rate /
- Pore structure

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References

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