Whether the satisfactory effect can be achieved in the later stage of floor heating depends on many factors, such as the selection of products in the early stage and the scheme design of matters needing attention in the later stage of installation and operation. What I recommend to you today is the basic knowledge about floor heating backfill, including the comparison of materials, the analysis of concepts and definitions, from which we can know that floor heating backfill, that is, the backfill layer of floor heating system, can be used to protect floor heating pipelines. To achieve the effect of storing heat energy and make the use of floor heating more efficient, then interested friends can refer to the following to understand the selection of backfill materials for floor heating and matters needing attention in design and construction.

First, what is floor heating backfill?

Backfill of floor heating, that is, the backfill layer of floor heating system-heat storage layer, is used to protect the floor heating pipeline and heat storage effect, so that the use efficiency of floor heating is higher. After the floor heating system is laid according to the design and construction requirements and passed the pressure test according to the specifications, it will be accepted and signed by the construction leader, the owner or the owner's agent. If it is a project, Party A, the civil engineering or decoration contractor shall sign the project acceptance form for confirmation; The qualified heating system shall be handed over to the concrete pouring construction unit, and the handover form shall be signed and approved by the corresponding unit, and the receiving unit shall be responsible for the protection of the finished products of the heating system; When pouring concrete, the heating system needs to maintain pressure, and the pressure should not be lower than 0.4MPa. What materials are used for floor heating backfill, construction intensity and machines are ready to ensure normal construction.

Second, what materials are used for floor heating backfill?

What material is good for floor heating backfill? In fact, C20 pisolite concrete should be used for the floor heating filling layer, and ordinary portland cement with a label of not less than 32.5 should be used for the cement. The material has high early strength and small drying shrinkage during setting and hardening, which is beneficial to control and prevent drying shrinkage cracking of concrete. Sand should be medium sand or coarse sand, with silt content not more than 5%, and its quality should conform to the current industry standard "Quality Standard and Inspection Method of Sand for Ordinary Concrete".

The particle size of pisolite should be 5- 15 mm, the thickness of filling layer of heating pipe should not be less than 30 mm, and when the ground load is more than 20KN/m2, reinforcement measures should be taken. Because the thickness of the floor heating filling layer directly affects the indoor clear height, structural load and initial investment cost of the building, the thickness of the filling layer should not be too thick. The thickness of backfill concrete should be between 30 and 40 mm, and the next working procedure can be directly constructed after the drying period.

Through the above example, we can know that this effect in the later stage of floor heating depends not only on the choice of product materials, but also on the design of floor heating backfill and other schemes. Generally speaking, the backfill soil of floor heating determines the efficiency of floor heating and the effect of heat storage to a certain extent, and they require us to design and construct reasonably according to the different structures and areas. In the process of selecting materials suitable for floor heating backfill, ordinary portland cement is more common, with higher strength and better cost performance. In addition, ordinary portland cement. You can come up with a reliable plan according to the actual situation.

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