Research progress on modification of magnesium phosphate cement-based materials
XIE Jian
JIN Lingyi
LI Wei
Abstract：Significance Magnesium phosphate cement(MPC)is an advanced cementitious material renowned for its ceramic-like proper-ties,making it a promising candidate for structural repair and reinforcement applications.Its rapid hardening characteristics and early-age strength development allow for efficient construction in time-sensitive projects,while its exceptional dimensional sta-bility ensures long-term structural integrity.Despite these advantages,practical challenges such as excessively short setting times and inherent brittleness have hindered its widespread adoption.To overcome these limitations,researchers have focused on modifying MPC through the strategic incorporation of mineral admixtures and high-performance fibers.These modifications aim to optimize the material's fresh-state workability,enhance its mechanical performance such as flexural and compressive strength,and improve its fracture toughness,ultimately transforming MPC into a more versatile and durable construction mate-rial suitable for diverse engineering scenarios.
Progress The modification of MPC has been extensively studied through the integration of various mineral admixtures and fiber reinforcements.Mineral admixtures such as fly ash(FA),metakaolin(MK),and industrial waste slag play pivotal roles in refining the material's microstructure and enhancing its performance.For instance,FA acts as a micro-aggregate that fills the voids between MPC particles,thereby improving paste fluidity,reducing hydration heat,and mitigating the risk of thermal cracking.Its pozzolanic reactivity further contributes to long-term strength development.MK,a highly reactive aluminosilicate,accelerates the formation of stable hydration products,balancing early strength development with controllable setting times.Industrial waste slag,on the other hand,reduces production costs and promotes sustainable construction practices.
Conclusions and Prospects The incorporation of mineral admixtures and fibers has profoundly influenced MPC performance,though their effects differ in scope.Mineral admixtures primarily enhance fresh-state properties,such as extending setting time,while refining the microstructure to boost mechanical strength and durability.Fibers,conversely,contribute mainly to toughen-ing mechanisms,elevating energy absorption capacity compared to plain MPC,even though they have limited influence on com-pressive strength.
Keywords：magnesium phosphate cementmineral additivefibermodification
Publication Date：2026-01-01
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：11( 107-117 )