1. General plastering mortar
The function of plastering mortar is to protect the main body of the structure from all kinds of damage, improve the durability of the structure and improve the appearance of the structure. Commonly used plastering mortars are lime mortar, cement mortar, cement mixed mortar, hemp knife lime mortar or paper reinforced lime mortar. In order to improve the water retention and cohesion of plastering mortar, cementitious materials should be more than masonry mortar, and a small amount of 107 gum can be added when necessary to enhance its cohesive force. In order to improve the tensile strength and prevent the cracking of plastering mortar, some fibre materials such as hemp knives are often added.
2. Decorative mortar
The plastering mortar, which can be applied on the surface of the inner and outer walls of buildings and have beautiful decorative effect, is commonly called decorative mortar. Cementitious materials and aggregates with certain colours should be selected and special operation technology should be adopted to make the surface show various decorative effects such as colours, lines and patterns. The cementitious materials used in decorative mortar are ordinary cement, slag cement, pozzolanic cement, white cement, color cement, or color cement mixed with alkali-resistant mineral pigments, lime and gypsum.
3. Waterproof mortar
The mortar that makes the waterproof layer is called waterproof mortar. Mortar waterproof layer is also called rigid waterproof layer. This waterproof layer is only suitable for concrete or masonry works which are not subject to vibration and have a certain stiffness. Rigid waterproof layer is not suitable for structures with large deformation or uneven subsidence. Waterproof mortar can be made with ordinary cement mortar, or waterproof agent can be added into cement mortar to improve the impermeability of mortar.
4. Other Special Mortars
Insulation mortar: Insulation mortar is also known as insulation mortar. It has the properties of insulation, heat insulation, sound absorption and so on. It mainly uses the insulation layer in the intentional house or the insulation layer of the building.
Decorative mortar: Decorative mortar, as its name implies, is a kind of mortar which mainly plays an decorative role. It is one of the common decorative means. This kind of mortar uses different colors of cementitious materials and aggregates through some operation techniques, which can make this kind of mortar show a certain decorative effect.
Waterproof mortar: Waterproof mortar has very high impermeability, but this kind of waterproof mortar is not suitable for masonry surface which can not withstand strong vibration and has certain rigidity. Moreover, this kind of mortar is highly operable for construction, otherwise it will not have the best waterproof effect.
Sound Absorbing Mortar: Sound Absorbing Mortar is usually made of lighter and porous aggregate, which has better performance. Sound-absorbing mortar is mainly used in indoor walls and so on.
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