? What is dry-mixed mortar?
Dry mortar is a general term, not a single product. According to different products, their dry density is different, and some products are divided into sandy and non-sandy, and their density is quite different.
Dry-mixed mortar is one of the emerging dry-mixed materials in the field of building materials. According to Guangdong provincial standard "Technical Specification for Application of Dry-mixed Mortar" DBJ/T? The definition of "15-36-2004" is: Dry-mixed mortar is a mixture produced by a professional manufacturer, with cement as the main binder, fine aggregate, mineral admixture, reinforcing material and additives after drying and sieving in a certain proportion.
Density standard of dry-mixed mortar
Is the density of dry-mixed masonry mortar ≥ 1800? kilogram
There is no standard requirement for the density of dry-mixed plastering mortar, which is probably? 1700? About kilograms
There is no standard requirement for the density of dry-mixed ground mortar, which is probably? 1900? About kilograms
There is no standard requirement for the density of dry-mixed ordinary waterproof mortar, which is about 1750? About kilograms
data
Cement mortar:1800kg/m3 (wet density)
Crack-resistant mortar: 1600kg/m3 (wet density), 1250- 1400kg/m3 (loose density).
Exterior wall putty: 1400kg/m3 (wet density), 900- 1200kg/m3 (loose density).
Density in dry mortar is very important and is a necessary data. Density can reflect a lot of information about the formula.
Advantages of dry-mixed mortar
1, and the production quality is guaranteed.
Dry-mixed mortar is produced by professional manufacturers, with fixed place, complete equipment and accurate measurement.
There is a perfect quality control system. Such as perfect computer control system, to ensure the accuracy and stability of the whole production process. River sand drying controls the water content of sand (generally ≤0.5%), dust removal controls the silt content of sand (generally ≤0.5%), and screening controls grading (generally, the grain size of sand required for production is less than 2.5mm, which is stored separately in several intervals, and then graded reasonably according to product requirements during production). Accurate computer-controlled measurement ensures the accuracy of raw material weighing. Forced mechanical mixing ensures uniform mixing of all materials. Strict quality inspection balances the quality of products. So many measures have fully guaranteed the product quality.
2. Excellent construction performance and quality
Dry-mixed mortar is specially designed according to product types and performance requirements, and various additives are added.
Used for modification, such as cellulose ether, redispersible latex powder, thixotropic lubricant, defoamer, air entraining agent, coagulant, waterproof agent, etc. Modified mortar has excellent construction performance and quality, good workability, convenient masonry, plastering and pumping, and improves construction efficiency, such as manual plastering 65438+ 100m2/h and mechanized construction 40 m2/h; When laying, the length of slurry laying at one time is greatly increased. Because of its excellent construction performance and quality, it improves the construction quality, reduces the thickness of construction layer and saves materials. With the improvement of construction quality, the chances of maintenance and rework are greatly reduced, and the long-term maintenance cost of buildings can also be reduced.
3. The product range is complete, which can meet various engineering requirements.
Dry-mixed mortar manufacturers can design formulas according to different matrix materials and functional requirements, such as
High water retention masonry and plastering mortar designed by using aerated concrete block, lime-sand brick, ceramsite concrete hollow block, super absorbent fly ash brick and other wall materials; Self-leveling platform mortar for high ground flatness. It can also meet various functional requirements such as heat preservation, impermeability, grouting, repair and decoration. According to incomplete statistics, there are more than 50 kinds of dry mortar.
To understand dry-mixed mortar, you must know some basic knowledge, such as the density of dry-mixed mortar. The density set according to different standards is also different data, so when using dry-mixed mortar as building supplies, we must choose a good density. The building materials made by this method are safe and reliable. At the same time, the use of dry-mixed mortar can greatly improve the work efficiency of workers and avoid the physical injury caused by traditional mortar. Because it is an environmentally friendly product, it will not cause great problems to the health of many people.
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