Work

Durability and CO2 sequestration capacity of carbon sequestration foamed concrete under magnesium and sodium sulfate attacks

Year: 2026

Type: article

Abstract: Carbon sequestration foamed concrete (CFC) is primarily composed of MgO, serpentine, silty clay, water and carbon dioxide (CO 2 ) foam. CFC has been extensively studied in previous literature for its exceptional performance in CO 2 sequestration. However, the lack of studies on the durability of CFC under sulfate attack remains a significant challenge for its large-scale application as a building material. This study investigated the durability and CO 2 sequestration of CFC under chemical sulfate attack by evaluating the changes in specimen volume, mass, phase identification and CO 2 sequestration capacity. The CFC specimens were exposed to magnesium sulfate (MgSO 4 ) and sodium sulfate (Na 2 SO 4 ) solutions for 10, 20 and 30 days, respectively, after which a series of tests were conducted. The results indicate that CFC exhibits enhanced sulfate resistance when exposed to MgSO 4 and Na 2 SO 4 solutions. The findings provide a foundation for improving the durability of foamed concrete under harsh environmental conditions.

Source: Construction and Building Materials

DOI: 10.1016/j.conbuildmat.2026.145506

Authors: Xiang Zhang, Songyu Liu, Kai Wu, Zhenyang Yuan, Zengfeng Zhao, Guojun Cai

Institutions: China Construction Eighth Engineering Division (China), Southeast University, Tongji University, Anhui Jianzhu University

Language: English

Topic: Concrete and Cement Materials Research

Subfield: Civil and Structural Engineering

Field: Engineering

Domain: Physical Sciences

SDGs: Climate action, Responsible consumption and production

Open Access status: hybrid

Estimated APC paid: $4,540