Work

Study on the corrosion resistance of early-strength coal gangue-based sprayed composite materials

Year: 2025

Type: article

Abstract: On the basis of the basic performance research of gangue aggregate, the early strength sprayed composite material was prepared by using gangue to completely replace the aggregate and sulphoaluminate cement as the cementitious material, and its corrosion resistance was studied. The research results show that the early strength gangue-based sprayed composite material (RSCG) has good working performance. With the increase of corrosion time, the strength of RSCG gradually decreases. The main corrosion components are gypsum (CaSO4?2H2O) and calcium sulfonate. The expansion products are generated and expanded in smaller capillaries, which is the main reason for the generation and expansion of cracks. Based on the experimental research, the equation of the corrosion reaction of gangue-based sprayed composite material and the surface sulfate ion concentration equation are given.

Source: Thermal Science

DOI: 10.2298/tsci2502497b

Authors: Xiao-Xi Bi, Jun-Wu Xia, Pei-Tao Qiu, Zhi-Jun Zhang, Yan-Mei Ma

Institutions: Xuzhou University of Technology, China University of Mining and Technology

Language: English

Topic: Concrete and Cement Materials Research

Subfield: Civil and Structural Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $161

Funders: Government of Jiangsu Province, Natural Science Foundation of Jiangsu Province