Research on the preparation of reversibly thermochromic cement at normal temperature and the effect of temperature-control intelligently

In this paper,the reversibly thermochromic cement at normal temperature was prepared out by adding reversibly thermochromic microencapsules in white portland cement.The research results showed that the color of the reversibly thermochromic cement added with B30 could be changed reversibly from blue at lower temperature to white at higher temperature,and the switching temperature was about 42℃.When added with R30 or G30,the color could be reversibly changed from red or green to white,and the switching temperature was about 58℃.When B30 was added in white portland cement,the water demand for the standard consistency of cement slurry increased,and the mechanical properties,such as flexural strength and compressive strength,decreased,but the setting time and the soundness of cement were not be affected.The researched reversibly thermochromic cement had the intelligent-temperature-control function for buildings.