Work

Effect of boron oxide on stability of high-ferrite Portland cement clinker in low-temperature calcination

Year: 2024

Type: article

Abstract: This study delves into the challenges posed by the low-temperature calcination of high-ferrite Portland cement (HFPC) clinker and explores the potential of boron oxide (B 2 O 3 ) as a stabilizing agent. Clinker production is a major contributor to global carbon dioxide emissions, and finding sustainable solutions is paramount. At 1350 °C, the HFPC clinker exhibits severe pulverization due to the metastable nature of the C 2 S phase formed at low temperature. To address these challenges, various stabilizing agents, including K 2 O + Na 2 O, barium carbonate (BaCO 3 ), calcium fluoride (CaF 2 ), and B 2 O 3 , were investigated. K 2 O + Na 2 O, BaCO 3 , and B 2 O 3 exhibited promising stabilization effects, although K 2 O + Na 2 O negatively impacted the stability, and BaCO 3 resulted in significant retardation. Consequently, B 2 O 3 was chosen as the preferred stabilizing agent for the low-temperature calcination of HFPC clinker. However, it was observed that the B 2 O 3 content should not exceed 1% to prevent destabilization of the C 3 S phase, which affects early-stage strength development. This research contributes to the understanding of HFPC clinker stability under low-temperature conditions and provides a potential avenue for reducing energy consumption and carbon emissions in HFPC clinker production.

Source: Scientific Reports

DOI: 10.1038/s41598-024-83179-9

Authors: Xiao Huang, Jinfang Zhang, Kechang Zhang

Institution: Guangxi 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, Industry, innovation and infrastructure

Open Access status: gold

Estimated APC paid: $2,590