Work

Enhanced hydration reaction of synthesized C4A0.81F1.19 with the use of different grinding agents

Year: 2024

Type: article

Abstract: Tetracalcium aluminoferrite (C4AF) presents in ordinary Portland cement (OPC) as a solid solution phase, as C4AxF2−x (0.7 ≤ x ≤ 1.1). There is a limited understanding of the hydration reactions of C4AF, particularly regarding the influence of alkanolamines (AA) on C4AF, which can substantially alter OPC hydration. In this study, synthesized C4A0.81F1.19 was subjected to grinding, using three different AA (triisopropanolamine, ethanol diisopropanolamine, and diethanol isopropanolamine) at dosages of 0, 0.1, and 0.3%. It was experimentally confirmed that the crystal structure of unhydrated C4AF was partially changed during the grinding process, and the hydration properties of C4AF were modified. From these results, the compressive strength improved significantly, and the rate of strength enhancement was the highest with 0.1% of diethanol isopropanolamine. More specifically, it was revealed that both Fe and Al sources were proficiently activated, leading to the production of Al/Fe-containing AFm phases and efficiently enhanced mechanical properties.

Source: Materials and Structures

DOI: 10.1617/s11527-024-02476-x

Authors: Hyunuk Kang, Yangwoo Lee, Sungjin Jung, Juhyuk Moon

Institutions: Seoul National University, Institute of Construction and Environmental Engineering

Language: English

Topic: Concrete and Cement Materials Research

Subfield: Civil and Structural Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $3,290