Unlike traditional mortar, ready-mixed mortar not only requires certain strength, but more importantly requires good water retention, adhesion, workability and so on. In order to ensure good workability of mortar, it is necessary to add water retention thickening materials into mortar, such as cellulose ethers, thickening powder, plasticizers, etc. Since wet-mixed mortar is transported to.. read more →

Building mortar is a functional material and usually constitutes a whole together with the substrate. For example, masonry mortar makes brick, building block and other bulk materials bonded as a whole to bear the load together; plastering mortar is painted on the surface of substrate, playing a role in protecting the substrate and resisting external.. read more →

The mud content refers to the content of particles with a nominal particle size of less than 80μm in the aggregate.   The clay lump content refers to the content of particles with a nominal particle size of greater than 1.25mm in sand but less than 630μm after washed and pinched.   The mud particles.. read more →

The fine aggregates used for building mortar include natural sand and artificial sand. Natural sand refers to the rock particles with a nominal particle size less than 5. 00mm formed under the natural conditions, and is divided into river sand, sea sand and mountain sand according to different sources. Artificial sand refers to the rock.. read more →

The aggregate is a component in the mortar with the largest dosage and the lowest cost. It has relatively good volume stability and high strength. Some aggregates also have good thermal insulation properties. The performance of aggregate can affect the effects of other components. Therefore, the rational use and giving full play to aggregate are.. read more →

The air-entraining agent can bring in a lot of evenly distributed, stable and closed tiny bubbles in the process of mortar mixing and stirring. The addition of air-entraining agent into mortar can significantly improve the workability of slurry and enhance the impermeability and frost resistance of hardened mortar. Although the dosage of air-entraining is small,.. read more →

The air-entraining agents are surfactants and can be divided into anionic, cationic, nonionic and amphionic types. The more widely used are anionic surfactants. The commonly used are the following categories:   . Rosin-based Air-entraining Agents Rosin-based air-entraining agents are produced by the reaction and polycondensation of rosin or the saponified product of rosin acid with.. read more →

A defoamer or an anti-foaming agent is a surfactant that suppresses or eliminates foam, with good chemical stability. It should have lower surface tension than the medium to be defoamed, a certain compatibility with the medium to be defoamed, and good dispersion. An effective defoamer can not only quickly break foams, but also can prevent.. read more →

What are the varieties of retarders? According to the chemical compositions, retarders can be divided into two categories, organic retarders and inorganic salt retarders. The organic retarder is a more widely used category of retarder. Common varieties are hydroxyl carboxylic acids and their salts (such as tartaric acid, sodium tartrate, potassium tartrate, citric acid, etc.,.. read more →

Some mortar also requires to have various functions. For example, the self-leveling mortar also requires high early strength, small shrinkage and wear resistance, in addition to the requirements for good flow properties, automatic flowing and leveling, which then which requires the addition of different additives to meet its requirements.   For wet-mixed mortar, the manufacturing.. read more →