Preparation and Performance Analysis of Magnesium Oxychloride Cement Stabilized Crushed Macadam Mixture

Sijie Li; Yi Sun

doi:10.6911/WSRJ.202504_11(4).0008

Authors

Sijie Li
Yi Sun

DOI:

https://doi.org/10.6911/WSRJ.202504_11(4).0008

Keywords:

Cement stabilized macadam, magnesium oxychloride cement, water resistance, impermeability.

Abstract

An experimental study evaluated the effect of magnesium oxychloride cement- stabilized macadam as an alternative to conventional cement-stabilized macadam, which is commonly used in semi-rigid road bases due to its good integrity and moderate stiffness. Conventional cement stabilized macadam requires a curing period of 7 days and has slow strength development. Magnesium oxychloride cement was tested to address these issues. The optimum mix composition was determined through aggregate gradation design and orthog- onal tests, and the mechanical properties and durability were evaluated. The results of the study showed that a 5% magnesium oxychloride cement con- tent achieved rapid early strength development under natural curing condi- tions without the need for water curing. Strength values reached 4-8 MPa within the first 1 to 2 days and stabilized thereafter, making it suitable for further construction. To prevent strength loss due to contact with water, a waterproof seal coating was used, enhancing the practical application of magnesium oxychloride cement stabilized macadam in road construction.

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