In contrast to job-site mortars, dry mortar is also called pre-mixed mortar, which is produced in the factory with dedicated facilities on batching and blending of ingredients in highly-controlled process. It can be used directly just by adding water in job site. It has advantages of consistent quality, controlled inventory, saving time and labour costs. By adding different chemical additives, it has fine properties of bond, thermal and acoustic insulation, crack-resistance, workability, water-retention, wear-proof, anti-corrosion, etc. Dry mortar can match different kinds of new construction materials by improving formulation. These good properties not only improve building's quality and life greatly, but also decrease the usage of mortar in a large degree. The demand for dry mortar has increased rapidly due to its outstanding merit comparing with the mortar made in job-site. Type of Dry Mortar 1. Bonding mortar: Masonry mortar, wall and floor tile adhesive mortar, anchorage mortar etc. 2. Decoration mortar: Decorative plaster, inner and outer wall putty, colorful decoration mortar etc. 3. Protection mortar: Water-proof mortar, anti-corrosion mortar, self-leveling mortar, wear resistance mortar, thermal insulation mortar, sound insulation mortar, repair mortar, mildewproof mortar, shielding mortar etc. Raw Materials: 1. Binders: Cement, hydrated lime, anhydrite, gypsum. 2. Filler: Silica sand, quartz sand, limestone, dolomite, expanded perlite etc. 3. Mineral admixture: Ground granulated blast furnace slag, fly ash, pozzolana, fine silica powder etc. 4. Water-retention and thickening material. 5. Chemical additives: Cellulose esters, superplasticizer, air entraining agents, accelerating agents, retarding agents, defoaming agents, hydrophobic agents, and etc.