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Deformation and Cracking Resistance of MgO-Incorporated Cementitious Material: A Review.

Authors :
Lu, Jinyuan
Feng, Pan
Li, Hua
Tian, Qian
Source :
Materials (1996-1944); Jan2023, Vol. 16 Issue 2, p500, 16p
Publication Year :
2023

Abstract

In China, MgO-based expansive agent (MEA) has been used for concrete shrinkage compensation and cracking control for over 40 years. The expansive behavior of MEA in cementitious materials could be manipulated to some extent by adjusting the calcination process of MEA and influenced by the restraint condition of the matrix. It is key to investigate the factors related to deformation and cracking resistance so that the desired performance of MEA in certain concrete structures could be achieved. This paper reviews the influence of key parameters such as hydration reactivity, dosage, and calcination conditions of MEA, the water-to-binder ratio, supplementary cementitious material, aggregates, and curing conditions on the deformation and cracking resistivity of cement paste, mortar, and concrete with an MEA addition. The numerical simulation methods and deformation prediction models are then summarized and analyzed for more reasonable estimations. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
19961944
Volume :
16
Issue :
2
Database :
Complementary Index
Journal :
Materials (1996-1944)
Publication Type :
Academic Journal
Accession number :
161477556
Full Text :
https://doi.org/10.3390/ma16020500