What are the advantages of thick layer self leveling cement in floor heating backfill

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New Earth Group


What are the advantages of thick layer self leveling cement in floor heating backfill

Change the traditional construction technology of floor heating, self-leveling mortar once backfilling, smooth and flat ground, and direct pavement surface material.
The use of light materials: the filling layer from the original 50mm thick pea stone concrete to 15mm-30mm cement self-leveling mortar layer. Self leveling cement mortar layer can solve the ground cracking, ground flatness is not enough in the construction of the two major problems. This change can greatly reduce the load on the structure, reduce the cross-section of beams, columns and foundations, and increase the height of the building space with the same floor height, or reduce the low floor height when reaching the same indoor net height, thus saving considerable building materials and reducing the overall construction cost. On the other hand, when these old buildings are demolished, the construction waste will be reduced. There is no doubt that these characteristics will have a positive impact on the construction, use and demolition process of the building, with obvious economic, social and environmental benefits.
System characteristics
Light, thin-to meet the needs of architectural design
The thickness is 15-30mm self-leveling cement mortar, while the traditional process uses 50mm thick pea stone concrete. This change can greatly reduce the load on the structure, reduce the cross section of beams, columns and foundations, and make the foundation stress much lighter. Moreover, the height of the building space can be increased under the condition of the same floor height, or the low floor height can be reduced under the condition of reaching the same indoor clear height, which is especially suitable for the renovation of the heating system of old buildings.
Solve the problem of ground cracking after ground mortar layer
Ground cracking mainly depends on the ground temperature difference and temperature. Because our conventional floor heating condition is 60 ° water supply/50 ° return water design, the ground temperature requirements are relatively high, the temperature difference is very large, so it is easy to cause the ground heat expansion and contraction, easy to crack and deformation. The efficient end in the radiation surface increased, can greatly reduce the water temperature, and reduce the temperature difference. At this time, the ground temperature is basically the same as the heating mode in summer. When the heating mode is in summer, the ground will not crack and the floor will not expand and contract with heat. The high-efficiency floor heating end can greatly reduce the thickness of the backfill layer, and achieve the purpose of fast heating, heat storage and energy saving at the high-efficiency end. (Note: The combined application of ultra-flat fast-hardening self-leveling cement in floor heating system is still in the exploratory stage, and the test results need to be seen after at least one heating season of recycling. In order to ensure the effect of the backfill layer of the floor heating system, the thickness of the self leveling cement can reach the lowest, but also according to the different paving methods of the floor heating system. Because of its characteristics, the high-efficiency end determines the ground temperature is not high, the compressive ability is strong, and the temperature rises quickly. Under the condition of ensuring the effect, the minimum self-leveling backfill thickness can be tested to achieve a win-win situation of the use effect and economic benefits.)
One-time molding to solve the flatness problem
Application Advantages of Self-leveling in Natural House for Floor Heating Backfill
1. The product has the fluidity, can be artificial or mechanical pumping construction
2. The construction thickness of more than 30mm without cracking phenomenon, is the best floor heating backfill mortar
3. Compressive strength of material shall not be less than C20
4. The flatness reaches 3 meters, and the height difference is less than or equal to 2mm.
5. Without the traditional method of maintenance, in the construction of 24 hours after the construction of other built-in construction
(2 hours after the summer construction/winter construction after 6 hours, Shore hardness reached 60, can walk)
6. After construction, there is no need to carry out the construction of the ground layer and its leveling layer, and other ground paving materials can be directly paved on the surface layer to shorten the construction period and reduce labor costs.

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