| Issue |
E3S Web Conf.
Volume 625, 2025
5th International Conference on Environment Resources and Energy Engineering (ICEREE 2025)
|
|
|---|---|---|
| Article Number | 03019 | |
| Number of page(s) | 4 | |
| Section | Resource Management and Ecosystem Regulation | |
| DOI | https://doi.org/10.1051/e3sconf/202562503019 | |
| Published online | 17 April 2025 | |
Phosphogypsum resource utilization in road engineering (II): The cement-modified PG with gravel filler
Hubei Province Road and Bridge Co. Ltd., Wuhan, 430056, China
* Corresponding author: chengshufan@whu.edu.cn
Phosphogypsum (PG) is the major industrial waste emitted in the phosphate industry, which may lead to water and air pollution. To exploit a large-scale consumption method for the solid waste, a filler material was proposed, and engineering testing was carried out. Research and practice have shown that: (1) the strength of the cement-modified PG increased slowly, a 28d of curing is necessary for the cement-modified PG filler. (2) PG was generated by fine particles, and it is hard to compact. Adding 35%~60% gravel (particle size 9.5~19.0 mm) to the PG filler makes the cement-modified PG with gravel filler have good compressibility. (3) Compared with the cement-stabilized gravel, the PG filler has a lower cost (saving about 30%).
© The Authors, published by EDP Sciences, 2025
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