Low-carbon saltpetering-resistant cement-based decorative mortar based on low cement dosage and preparation method thereof

The invention relates to the technical field of building materials, and discloses low-carbon saltpetering-resistant cement-based decorative mortar based on low cement consumption and a preparation method of the low-carbon saltpetering-resistant cement-based decorative mortar. The low-carbon saltpetering-resistant cement-based decorative mortar is prepared from the following raw material components in parts by weight: 70 to 150 parts of cement, 700 to 800 parts of sand, 50 to 130 parts of mineral powder, 0 to 50 parts of silica fume, 0.1 to 0.6 part of a water reducing agent, 0.1 to 0.5 part of cellulose ether, 2 to 6 parts of a waterproof component, 0 to 10 parts of a thickening component, 0 to 5 parts of pigment and 100 to 140 parts of water, and the ratio of the water to the material is 0.10 to 0.14. According to the low-carbon saltpetering-resistant cement-based decorative mortar disclosed by the invention, the mineral powder and other polymer admixtures are added, so that the mortar still meets the streng