Work

Phosphogypsum resource utilization in road engineering (II): The cement-modified PG with gravel filler

Year: 2025

Type: conference-paper

Abstract: 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%).

Source: E3S Web of Conferences

DOI: 10.1051/e3sconf/202562503019

Authors: Yuan Yi, Zhu Hongming, Kang Lin, Shufan Cheng

Language: English

Topic: Geotechnical and construction materials studies

Subfield: Civil and Structural Engineering

Field: Engineering

Domain: Physical Sciences

SDGs: Industry, innovation and infrastructure, Responsible consumption and production

Open Access status: diamond

Funder: National Natural Science Foundation of China

Award: 落石重复碰撞损伤累积及破碎特征研究