Study on the performance of steel slag-based CO2 sequestered fiber cement flat sheets under carbonation curing
ZHANG Cheng
LUO Jingjing
HE Keyao
ZHANG Yuyang
ZHANG Rui
LIU Songhui
Abstract：This study developed a CO2 sequestered fiber cement flat sheets using steel slag and pulp fiber as primary raw materials via carbonation curing.The influence of forming pressure,cement content,pulp fiber content,and water-solid ratio on its properties was investigated.The results demonstrated that under a forming pressure of 25 MPa,the CO2 sequestered fiber cement flat sheets achieved optimal CO2 uptake and water-saturated flexural strength.The results of the orthogonal experiment showed that the most critical influencing factors on CO2 absorption,saturated flexural strength,and water absorption were cement content,water to solid ratio,and pulp fiber content,respectively.The calcium carbonate generated from carbonation curing filled pores in the fiber cement flat sheets and strengthening interfacial bonding between pulp fibers and matrix.Additionally,carbonation curing consumed free calcium oxide in steel slag,effectively resolving the volume stability issues associated with steel slag.
Keywords：carbonation curingsteel slagfiber cement flat sheetsCO2 uptakeflexural strength
Publication Date：2025-11-25
Online Publishing Date：2025-12-15(First online date of this platform, not the publication date of the document)
Pages：6( 18-22,32 )