Heating ground concrete packing layer

Abstract

The invention discloses a heating ground concrete packing layer which comprises 10-20% of 425#cement, 10-30% of sand with the particle size of 0.1-4 mm, 15-35% of pebble with the particle size of 5-12 mm, 3-15% of 100-mesh mica powder, 5-15% of flue gas desulfurization gypsum, 0.05-1% of medium-viscosity methyl cellulose ether, 1-5% of redispersible gelatin powder according to mass percent, and in addition, the additive quantity of water is 140-260 kg / m<3>. The concrete packing layer has the characteristics of light weight, high strength, uniform heat transfer, good electricity insulation, good temperature resistance, anti-permeability, water tightness, environmental protection, energy economization and the like.

Description

technical field [0001] The invention relates to a concrete floor, in particular to a concrete filling layer for a heating floor. Background technique [0002] With the development and progress of building materials and building construction technology, "building energy efficiency" has become a leading development direction in its field in recent years. Years of scientific research and practical experience have shown that the amount of concrete used in the concrete floor cushion is relatively large, and it is second only to the amount of structural concrete in buildings. Since the concrete ground cushion used to be only used as a transition layer for bearing pressure and leveling the ground base, it did not attract the attention of designers, construction personnel and users, and even cracked and collapsed the ground surface due to unreasonable ingredients or unqualified raw materials. Construction quality accidents. In the past ten years, due to the wide application of gro...

AI Technical Summary

Problems solved by technology

The thermal conductivity of concrete is 1.7~2.3w / M.K, which also easily leads to the rapid heat absorption and heat release of the filling layer. In order to maintain the indoor temperature requirements, the heat source needs to be continuously provided, resulting in a large workload of the heat source plant and waste of energy.

[0003] Therefore, the traditional concrete floor cushion and the use of C15 fine stone concrete obviously cannot meet the requirements of the new heating floor