The present experiment aimed to investigate the impact of common cations found in seawater on the properties of sulfoaluminate cement(SAC),with the objective of providing valuable insights for both research and practical applications in Marine concrete engineering.Acetate solutions were prepared with concentrations equivalent to 1x,1.5x,2x,and 2.5x the cation concentration in seawater,serving as mixing water for the investigation.This study focuses on examining the influence of sea salt cations on sulfoaluminate cement mortars,considering their impact on workability,physical properties,mechanical properties,and setting time.The goal is to comprehensively understand how the type and concentration of sea salt cations affect various aspects of SAC mortar performance.Additionally,microscopic tests were conducted to analyze the hydration products of cement and its microstructure.The results indicated that the inclusion of sodium and calcium ions reduced the setting time of SAC,while potassium ions had little effect on the setting time.Magnesium ions significantly extended the setting time and worsened flowability.The incorporation of cations reduced the porosity and water absorption rate of the cement paste.The addition of cations at higher concentration multipliers adversely affected the flexural strength of the cement mortar but was beneficial for its compressive strength.
sulfoaluminate cementsea salt cationsetting timephysical propertiesporosity
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