METHOD FOR TESTING SELF-DRYING EFFECT OF CEMENT-BASED MATERIAL

摘要

The present invention discloses a testing method for self-desiccation effect on cement-based material. This method is able to test the humidity change of the cement-based material from final set to water being added for 1d so as to show the water consumption and self-desiccation process inside the cement-based material. The testing method for self-desiccation effect on cement-based material is to test the internal dew-point temperature of the cement-based material from final set to water being added for 1d, and afterwards to calculate the internal relative humidity of the cement-based material according to the equation (3). The testing method provided by the invention can test the humidity change of the cement-based material from final set to water being added for 1d so as to represent the water consumption and self-desiccation process inside the cement-based material. In addition, a testing method with different stages and covering the whole process is further provided to test the whole process of the relative humidity gradually falling from 100% when the cement-based material is shaped after addition of water under an enclosed condition. Consequently, it provides a theoretical basis for quantitative calculation of self-desiccation of the cement-based material.