Why should winter construction mortar be thin?

The workability of mortar can be changed. In the winter construction stage, extreme weather such as low temperature, rain, snow and freezing will be encountered. In the construction process, the viscosity of mortar will become thinner, thus changing the workability of mortar. It's too thick to smooth. Mortar is a kind of binding substance used in building bricklaying, which is made of sand and cementitious materials in a certain proportion and added with water.