Q: What is gypsum-based mortar? A: Gypsum-based mortar is mainly composed of hemihydrate gypsum coupled with corresponding auxiliary materials and chemical admixtures, made by uniform mixing. In terms of using performance, generally it can be divided into gypsum-based plastering mortar for wall plastering and gypsum-based self-leveling mortar for ground leveling. Q: What is.. read more →
Gypsum putty is also known as wall scraping putty, a powdery material with building gypsum powder and talcum powder as main materials, mixed with a small amount of gypsum modifier. When using it, add water to stir evenly and level the wall by blade coating. It is the ideal base material for spraying coating and.. read more →
(1) Building Gypsum Powder Building gypsum powder is the main material of gypsum putty and the basic material to ensure the bond strength and impact strength, so there are stricter requirements for its quality. Physical Properties Fineness: all through 120-mesh sieve; Initial Setting Time: no less than 6min Final Setting Time: Less than 30min 2h.. read more →
Plastering mortar is a functional material rather than a structural material, and mainly plays the role of protecting the wall, in addition to leveling the wall. The quality of plastering mortar is ultimately reflected in its project quality. The main problems existing in plastering mortar are cracking, hollowing and shedding, for which a major reason.. read more →
The properties of plastering mortar after hardening include the compressive strength, bond tensile strength, contraction, permeability resistance and frost resistance. Plastering mortar has requirements for appropriate compressive strength, high bond tensile strength and low contraction, as well as good permeability and frost resistance if used for exterior walls. The compressive strength should try to match.. read more →
Plastering mortar refers to the mortar plastered onto the surface of buildings or components. According to the construction site, it is divided into indoor plastering and outdoor plastering. The former includes the inner wall, ceiling, dado, floors and stairs, etc.; while the latter includes the outer wall, parapet wall, windowsill and balcony, etc. By functions,.. read more →
The use of plastering mortar should be determined by the facade dimensional precision and wall structure of buildings. For example, since the brick structure wall has many mortar joints between blocks and large dimensional deviation of blocks, ordinary plastering mortar is usually used. As for reinforced concrete structure, if the dimensional accuracy deviation of template.. read more →
The performance of mortar before hardening is the operability of mortar, specifically manifested in the consistency, layering degree, water retention, density and setting time. The consistency index reflects the softness of mortar. If the consistency is great, mortar will be soft and easy for spreading; if the consistency is small, mortar will be relatively.. read more →
Q: What are the varieties of cement? And its characteristics? A: According to the composition, cement can be divided into Portland cement, aluminate cement and sulphoaluminate cement, etc. Portland cement is the most consumable and most widely used category of cement in civil and architectural engineering, with Portland cement clinker as the major component. According.. read more →
The cellulose ether is also known the rheology modifier, i.e., an additive used to adjust the rheological properties of fresh mortar. The main functions are as follows: (1). It enables the fresh mortar to thicken, thus prevents segregation and obtains uniform plasticizers; (2). It has air entraining effect itself, and can also stabilize the introduced.. read more →