The bottom ground of floor heating can prevent warmth from transferring down, and make heat transfer up in a single direction, that could save heat. Consequently, the insulation layer should have a remarkable insulation impact. Floor heating insulation must additionally have a specific strength to face up to the upper load, and similarly, the floor heating insulation layer also plays a role in solving water pipes. The great of the thermal insulation layer without delay affects the high-quality of the complete thermal engineering. So, the material of the floor heating insulation layer is taken seriously by the increasingly professional personage internal course of study. There are two number one materials inside the marketplace, one is polystyrene foam board, and the opposite is foam concrete.
1. The benzene board
The thermal conductivity of the benzene plate is zero.041/w(m.ok), which has a tremendous thermal insulation effect and is an excellent thermal insulation fabric for ground heating. but, the benzene plate has subsequent disadvantages :
(1) It is simple to be compressed and deformed. Underneath the motion of concrete useless weight and static and dynamic load, the benzene plate is straightforward to be compressed and distorted.
(2) Deformation caused by fatigue energy. The designed provider lifestyles of floor heating are several a long time. Inside the long-time period use technique, the dynamic load of the ground will produce fatigue energy to the benzene plate. The bearing potential of the benzene plate decreases, the deformation is similarly elevated, and the floor will sag hence.
(three) increase in thermal conductivity. Due to the compression deformation of the benzene plate, its density will increase, so the thermal conductivity will also rise. Insulation will even decrease.
2.Foam concrete insulation layer
Foam concrete is some other insulation cloth after the benzene board. Foaming cement utilized in-ground heating, widespread bulk weight 350 ~ 450kg/m3, thermal conductivity 0.087w /m.okay, the content material now not most effective has the blessings of high compressive power, low thermal conductivity, strong chemical overall performance, environmental protection, no deformation, and leveling layer and thermal insulation layer in a single, rapid production, low fee, is one of the exceptional desire of ground heating insulation layer. In evaluation, foam concrete has greater advantages than the benzene board. This paper will pay attention to the overall performance traits and creation application of foam concrete.
(1) warmth insulation
The thermal conductivity was between 0.05 and zero.15Kcal/mh℃. Heating insulation way that the warmth pipe actions up to facilitate the discharge of warmth in the specific direction.
The density is 350 ~ 450kg/m3, which can reduce the weight of the construction.
(3) Sound insulation
Because the frequency of the benzene board is just too low, a person at the surface will produce a hole sound foam cement because of the numerous independent bubbles formed with the aid of the porous, so the sound absorption effect is five instances better than the overall concrete and proof against vibration.
(4) handy construction, excessive-performance
Foam concrete is a liquid transported by using excessive strain mechanical, foam concrete slurry dispersion; mobility is best, appropriate for improvement and irrigation, construction saves manpower and cloth assets, the surface after solidification is easy and easy, creation pace is speedy: every shift maybe construction 3000 ~ 4000 rectangular meters, saving construction length. The benzene plate laying generation is bulky, fixed pipe u-shaped nail smooth to pop out, want PE aluminum film, and wire mesh.
(5) It has a particular compressive energy
foam concrete has terrific compressive energy: while the density is 350kg/m3, the 7-day compressive energy is 6kg/cm2. Oneself have sure intensity, have the bearing impact that supports ground heating tube fabric and floor, due to it has a sure intensity, now not easy be out of shape, the sphere which can avoid the use of benzene board to shape cracks, make indoor floor level, clean and smooth.
(6) right integrity
Foam concrete, ground structure layer, and heating filling layer are all concrete merchandise on the material, with great usual overall performance, and conquer the empty drum phenomenon of the ground heating insulation layer of the benzene board. However, the benzene plate fabric in the long-time period use (which includes after heating) easy deformation affects the integrity of the structure.
(7) Environmental safety
Conventional benzene board materials have an unusual smell, containing dangerous, unstable health, clean to provide chemical pollutants; the excessive temperature is relaxed to decompose poisonous additives; terms used inside the concrete foaming agent for concrete for plant sex protein fibers and animal protein, non-toxic harmless completely overcomes the drawback of this aspect.
(8) exact adhesion
Foam concrete and the floor structure layer are concrete merchandise that has extremely good adhesion with the floor and can also leveling the floor. But, the benzene board and the story are two substances that can not be well mixed, so the structure layer is affected, and the ground structure layer wishes to be leveled before laying the benzene board.
Because of the development of the use of mechanical pipeline delivery effectively keep the workforce, materials simplest water, cement, bubble agent, significantly saves the value of the task.
(10) long-term effect
Benzene plate herbal getting older, the shelf life of 6 years, commonly after one-12 months deformation, ground subsidence or cracks, deformation at 60℃ straight away getting old; Foam concrete insulation has high balance and anti-getting older performance, which can effectively assure the leveling of indoor ground and no cracking.
Its service life is 5 ~ 10 instances of benzene board, it and concrete have the same carrier existence.
(11) fire resistance
Benzene plate smooth to burn, heart-melting, and burning to release toxic gadgets; Foam concrete is an inorganic material, a good way to now not burn and has the right quantity of fireplace resistance. It could be used on buildings to improve the overall fireproof performance of buildings.
(12) Water absorption and moisture resistance
Foam concrete has poor water absorption, because it’s miles a closed-hollow structure, within the moist country in the center of the plate, after a few months is still completely dry and hold its dry country of electricity, than the everyday floor anti-seepage enhancement of extra than six times.
(13) necessities for filling layer
Because the benzene plate is gentle and easy to compression deformation, so the filling layer needs to be thickened, greater than 40mm. Otherwise, it’ll fracture; Foam concrete is incorporated with the filling layer, which has typical high electricity. Consequently, the thickness of the filling layer most effective wishes 30 ~ 40mm.
Foam concrete indicates exquisite blessings in destiny market opposition with its particular performance. Particularly with the strengthening and implementation of strength conservation and environmental protection rules, its advantages are extra outstanding in ecological protection and strength conservation. foam concrete will expand closer to excessive electricity, light-weight, composite, and electricity saving.