Characteristics and applications of Dauer sand concrete

Dauer sand concrete of the M-300 brand is an environmentally friendly building mixture, in a frozen state, harmless to human health. Working with the material has its own specifics, so you should first study the main characteristics and rules for using Dauer sand concrete. It is used not only for the construction of buildings and outdoor applications, but also for interior decoration of various surfaces.

The material is made in accordance with the norms and requirements of the state standard, regulated by the document GOST 7473-2010. Sand concrete is a homogeneous powdery substance of gray coarse-grained components.

The main constituent elements of the material are inorganic binder Portland cement and fractionated river sand. Various additives, additives and mineral fillers can also be used to increase a number of working properties. After mixing with water and preparing the working solution, it becomes mobile, transforms into a plastic, non-exfoliating composition.

The main technical characteristics of the material are shown in the table.

The ready-to-use solution must be used no more than 2 hours after mixing it, in winter at low temperatures the viability of the composition sharply decreases - up to 60 minutes. And also when working with a ready-made solution, certain conditions must be observed: when using the composition, the recommended temperature of the ambient air and the surface to be treated should be in the range from +5 to +30 degrees. If work is carried out in winter at temperatures below +5 degrees, you will need to add a special anti-freeze additive to the composition, which allows the solution to be used in conditions from -10 to -15 degrees Celsius.

Dauer M-300 sand concrete is used for various general construction works:

• pouring screeds;

• sealing seams, cracks or gouges;

• creation of concrete structures;

• erection of buildings from bricks, natural stone and blocks;

• plastering of walls;

• production of stairs, paving slabs and other concrete products;

• creating and pouring foundations;

• preparation of the base for the underfloor heating system;

• restoration work;

• elimination of defects and leveling of various surfaces.

The consumption of sand concrete directly depends on the type of work performed and conditions. When pouring a floor screed with a thickness of 10 millimeters per 1 square meter of area, at least 20 kilograms of material will be required. If the foundation is being poured or other similar reinforced concrete work, then about 1.5 kilograms of dry mixture is consumed per 1 cubic meter of the finished solution.For plastering walls or sealing cracks, as well as for restoration work, 18 kilograms of material will be enough per square meter (with a 10 mm layer).

Before applying the Dauer sand concrete mortar, it is necessary to thoroughly prepare and clean the surface to be treated - remove all dirt, paint residues, oils, remove the exfoliation of old material. It is also recommended to remove dust and slightly moisten the surface, and pre-treat bases made of highly absorbent materials (for example, gypsum or foam concrete) with a primer.

To prepare the solution, you will need to pour the required amount of the mixture into a metal container or concrete mixer and add a certain amount of water based on the calculations presented in the table. Stir well until a homogeneous elastic mass is formed. The volumes of water can be varied to create a consistency suitable for the job. Let the mixed composition brew a little (up to 5 minutes), and mix again.

If a concrete solution is being prepared, then it is necessary to add fine crushed stone, the proportions will depend on the type of construction work - approximate calculations are usually indicated by the manufacturer on the package. To improve the basic properties and technical characteristics of the material, various additives and fillers are added to the composition. They increase the frost resistance of the mortar, strength, reliability and durability of the manufactured structures, improve the heat and sound insulation of structures. The amount and type of additives will also depend on the type and conditions of construction work.

After preparation, the working solution must be applied to the prepared surface and evenly distributed using profile construction tools. During work, especially with frequent breaks, it is recommended to always monitor the condition of the mixture - to prevent drying, periodically add a small amount of water to the composition.

Dauer M-300 is safe for humans in a ready-made solid state, but dry mix and working solution can be harmful to health. Therefore, the material should be protected from children, while working with it, use gloves and safety glasses.