Effects of Air-Entraining Agents and Glass Powder on the Electromagnetic Wave Transmission and Mechanical Performances of Sulfoaluminate Cement

This study prepared a sulfoaluminate cement with high electromagnetic wave transmission performance by adding air entraining agent and glass powder and revealed the related mechanism. The test results showed the air-entraining agents and glass powder cannot affect the type of hydration products of the sulfoaluminate cement. The addition of the air-entraining agents and glass powder reduced the dielectric constant of the SAC while increasing the magnetic permeability. The air-entraining agents and glass powder increased the transmittance with a maximum value of 60.2%, illustrating the electromagnetic wave transmission performance of the sulfoaluminate cement could be improved. The electrical resistivity of the sulfoaluminate cement with the air-entraining agents and glass powder did not change significantly because the air-entraining agents increased the electrical resistivity and the effect of the glass powder was the opposite. The strengths of the sulfoaluminate cement with the air-entraining agents and glass powder decreased.