CN113683368B - Mortar board and dry floor heating system - Google Patents

Mortar board and dry floor heating system Download PDF

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Publication number
CN113683368B
CN113683368B CN202111164923.7A CN202111164923A CN113683368B CN 113683368 B CN113683368 B CN 113683368B CN 202111164923 A CN202111164923 A CN 202111164923A CN 113683368 B CN113683368 B CN 113683368B
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China
Prior art keywords
parts
floor heating
layer
mortar
paved
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CN113683368A (en
Inventor
孟辉江
马国栋
郝建江
陈占虎
刘立朋
杨佳
李幸展
乔文静
石红娟
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Hebei Sunsky Deeply Developed Technology Co ltd
Hebei Jinduo Construction Engineering Co ltd
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Hebei Sunsky Deeply Developed Technology Co ltd
Hebei Jinduo Construction Engineering Co ltd
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
    • C04B28/04—Portland cements
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B18/04—Waste materials; Refuse
    • C04B18/06—Combustion residues, e.g. purification products of smoke, fumes or exhaust gases
    • C04B18/08—Flue dust, i.e. fly ash
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
    • C04B24/24—Macromolecular compounds
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/12—Flooring or floor layers made of masses in situ, e.g. seamless magnesite floors, terrazzo gypsum floors
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/18—Separately-laid insulating layers; Other additional insulating measures; Floating floors
    • E04F15/181—Insulating layers integrally formed with the flooring or the flooring elements
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/18—Separately-laid insulating layers; Other additional insulating measures; Floating floors
    • E04F15/182—Underlayers coated with adhesive or mortar to receive the flooring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00—Details
    • F24D19/008—Details related to central heating radiators
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Architecture (AREA)
  • Ceramic Engineering (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Road Paving Structures (AREA)

Abstract

The invention provides a mortar board and a dry floor heating system, which belong to the technical field of floor heating construction, wherein the dry floor heating system comprises: the support structures are paved on the reinforced concrete layer at intervals; the heat insulation layer is provided with a plurality of heat insulation boards; the heat insulation board is paved on the reinforced concrete layer floor slab; the insulation board is arranged around the supporting structure; a floor heating pipe caulking groove is embedded in the heat preservation layer; the mortar plate is paved on the upper surface of the supporting structure; the dry floor heating system has the advantages of high construction efficiency, small site pollution, good flatness, improved use space for users, convenient disassembly and replacement, continuous construction with the follow-up facing bricks and reduction of the whole construction period.

Description

Mortar board and dry floor heating system
Technical Field
The invention relates to the technical field of floor heating construction, in particular to a mortar board and a dry floor heating system.
Background
The floor heating is short for floor radiant heating, and takes the whole floor as a radiator, uniformly heats the whole floor through a heating medium in a floor radiant layer, and supplies heat to the indoor through the floor in a radiation and convection heat transfer mode so as to achieve the aim of comfortable heating. The floor heating system is divided into two types of water floor heating and electric floor heating according to different heat transfer mediums, and is mainly divided into two types of dry floor heating and wet floor heating according to different pavement structures.
Compared with dry floor heating, the conventional wet floor heating installation construction process comprises the steps of firstly carrying out foundation leveling on floor surfaces, paving extruded sheets, processing splice joints, paving reflecting films, placing floor heating pipes and fixing, pouring fine stone concrete for more than 50mm, and carrying out masonry mortar leveling on the fine stone concrete surfaces for 30-50 mm in subsequent room decoration, thereby having the defects of complicated working procedures, long period, reduction of floor height space and the like.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the defects of complicated working procedures, long period and reduced floor height space of the wet floor heating in the prior art, thereby providing a dry floor heating system.
The invention also provides a mortar board.
In order to solve the technical problems, the invention provides a mortar board which comprises the following components in parts by weight,
450-550 parts of cement;
450-660 parts of sand;
10-100 parts of mineral admixture;
1-60 parts of high molecular polymer material;
0-15 parts of additive.
Preferably, the high molecular polymer material includes: redispersible latex powder and polyvinyl alcohol;
optionally, the method comprises the following steps: 1-50 parts of redispersible emulsion powder and 1-10 parts of polyvinyl alcohol.
Preferably, the grain size of the sand is 20-140 meshes;
optionally, the method comprises the following steps: 75-125 parts of sand with the grain size of 20-40 meshes, 275-325 parts of sand with the grain size of 40-70 meshes and 125-210 parts of sand with the grain size of 70-140 meshes.
Preferably, the mineral admixture is at least one of mineral powder, silica fume and fly ash.
As a preferable scheme, the additive comprises 0-2 parts of temperature-sensitive glue, 0-5 parts of anti-shrinkage agent, 0-2 parts of water reducer, 0-2 parts of defoamer and 0-10 parts of retarder.
The invention also provides a dry floor heating system, which comprises:
the support structures are paved on the reinforced concrete layer at intervals;
the heat insulation layer is provided with a plurality of heat insulation boards; the heat insulation board is paved on the reinforced concrete layer; the insulation board is arranged around the supporting structure; a floor heating pipe is embedded in the heat preservation layer;
and the mortar plate is paved on the upper surface of the supporting structure.
Preferably, the mortar board is any one of the mortar boards described above.
As a preferable scheme, one side of the heat preservation layer far away from the reinforced concrete layer is provided with a reflecting film, and the reflecting film and the heat preservation layer are integrally arranged.
Preferably, the supporting structure is a wood keel, a graphite plate or a polyurethane plate.
Preferably, the method further comprises:
the first leveling layer is paved above the reinforced concrete layer and is self-leveling mortar; the self-leveling mortar is cement-based mortar;
the second leveling layer is paved on the upper surface of the mortar board;
and the facing layer is paved on the upper surface of the second leveling layer.
The technical scheme of the invention has the following advantages:
1. the invention provides a mortar board, which comprises the following components in parts by weight, 450-550 parts of cement; 450-660 parts of sand; 10-100 parts of mineral admixture; 1-60 parts of high molecular polymer material; 0-15 parts of additive. According to the invention, through the cooperation and dosage adjustment of the components, the compression resistance and the flexural strength of the mortar board can be improved, the shrinkage rate is reduced, and the warping and cracking of the mortar board can be effectively prevented.
The compression resistance and the flexural strength of the mortar board are changed by changing the mixing amount of the cement, and the shrinkage rate of the mortar board is changed by adopting anti-cracking double-quick cement;
by changing the blending amount of the mineral admixture, the strength can be improved and the warping and cracking of the mortar board can be effectively prevented due to the low activity of the mineral admixture and low hydration heat reaction.
2. According to the mortar board provided by the invention, the flexibility of mortar is greatly improved by adding the rubber powder, so that the 28-day flexural strength of the mortar board is more than or equal to 20MPA.
3. The invention provides a dry floor heating system, which comprises: the device comprises a supporting structure, a heat preservation layer and a mortar board; in the scheme, a floor heating system is formed by adopting a supporting structure to erect mortar boards, the dry construction operation is high in construction efficiency, small in site pollution and good in flatness, the use space of a user is improved, the assembly, disassembly and replacement are convenient, the continuous construction with the follow-up facing bricks can be realized, and the whole construction period is reduced;
and a certain space is reserved between the heat insulation layer and the floor heating pipe and the mortar plate, so that the direct stress of the finish layer and the finish layer is avoided, and the cracking resistance and the safety of the system are improved.
The floor heating pipes are embedded into the heat insulation layer, so that the thickness of the whole system is reduced, and the construction efficiency is improved.
4. According to the dry floor heating system provided by the invention, the reflecting film and the heat preservation layer are prefabricated into a whole, so that the construction efficiency is improved, and meanwhile, the heat of the floor heating pipe is prevented from radiating downwards through the arrangement of the reflecting film.
5. The dry floor heating system provided by the invention has the advantages that the prefabricated mortar board has high flatness and high strength, the mortar or the adhesive can be directly used for paving the wood floor and the ceramic tile, and the thickness of the leveling layer can be greatly reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic cross-sectional structure of a floor heating system according to the present invention.
Fig. 2 is a schematic top view of the floor heating system of the present invention.
Reference numerals illustrate:
1. a reinforced concrete layer; 2. a heat preservation layer; 3. a reflective film; 4. wood joists; 5. a floor heating pipe; 6. a second leveling layer; 7. a facing layer; 8. a mortar board; 9. a first screed layer.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In addition, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
Example 1
The mass ratio of water to mortar board dry material of the mortar board provided by the embodiment is 0.10; wherein, the composition of the mortar board drier is:
450 kg of cement (high belite anti-cracking double-speed 42.5 model), 660 kg of sand, 80kg of mineral admixture, 2kg of high polymer and 15kg of additive; wherein the sand with the grain size of 20-40 meshes is 125 kg, the sand with the grain size of 40-70 meshes is 325 kg, and the sand with the grain size of 70-140 meshes is 210 kg; the mineral admixture is fly ash; redispersible emulsion powder (model 5010N) in the high molecular polymer and polyvinyl alcohol (2488 cold-soluble type) with the mass ratio of 3:1, a step of; the additive is medium-temperature wheel glue (ft-765), an anti-shrinkage agent (P750), a water reducing agent (FOX-C900 model), a defoaming agent (352-B model) and a retarder (citric acid) in a mass ratio of 1:2:1:2:5.
And uniformly mixing the components of the mortar board dry material, and then uniformly mixing with water to obtain the mortar board dry material.
Example 2
The mass ratio of water to mortar board dry material of the mortar board provided by the embodiment is 0.15; wherein, the composition of the mortar board drier is:
550 kg of cement (42.5 model), 450 kg of sand, 10kg of mineral admixture, 60kg of high polymer and 1kg of additive; wherein, the grain size of the sand is 75 kg of 20-40 meshes, the grain size of the sand is 275 kg of 40-70 meshes, and the grain size of the sand is 200 kg of 70-140 meshes; the mineral admixture is fly ash; redispersible emulsion powder (5048H model) in high molecular polymer and polyvinyl alcohol (2488 cold-soluble type) with the mass ratio of 2:1, a step of; the additive is medium-temperature wheel glue (ft-765), an anti-shrinkage agent (P750), a water reducing agent (FOX-C900 model), a defoaming agent (352-B model) and a retarder (citric acid) in a mass ratio of 1:1:1:2:5.
And uniformly mixing the components of the mortar board dry material, and then uniformly mixing with water to obtain the mortar board dry material.
Example 3
The mass ratio of water to mortar board dry material of the mortar board provided by the embodiment is 0.2; wherein, the composition of the mortar board drier is:
500 kg of cement (42.5 model), 600 kg of sand, 50kg of mineral admixture, 30kg of high polymer and 8kg of additive; wherein the sand with the grain size of 20-40 meshes is 90 kg, the sand with the grain size of 40-70 meshes is 280 kg, and the sand with the grain size of 70-140 meshes is 130 kg; the mineral admixture is fly ash; redispersible emulsion powder (5048H model) in high molecular polymer and polyvinyl alcohol (2488 cold-soluble type) with the mass ratio of 5:1, a step of; the additive is medium-temperature wheel glue (ft-765), an anti-shrinkage agent (P750), a water reducing agent (FOX-C900 model), a defoaming agent (352-B model) and a retarder (white granulated sugar) in a mass ratio of 1:5:1:3:5.
And uniformly mixing the components of the mortar board dry material, and then uniformly mixing with water to obtain the mortar board dry material.
Example 4
The mass ratio of water to mortar board dry material of the mortar board provided by the embodiment is 0.18; wherein, the composition of the mortar board drier is:
470 kg of cement (42.5 model), 620 kg of sand, 70kg of mineral admixture, 20kg of high polymer and 3kg of additive; wherein the sand with the grain size of 20-40 meshes is 100 kg, the sand with the grain size of 40-70 meshes is 300 kg, and the sand with the grain size of 70-140 meshes is 170 kg; the mineral admixture is fly ash; redispersible emulsion powder (5048H model) in high molecular polymer and polyvinyl alcohol (2488 cold-soluble type) with mass ratio of 3:1, a step of; the additive is medium-temperature wheel glue (ft-765), an anti-shrinkage agent (P750), a water reducing agent (FOX-C900 model), a defoaming agent (352-B model) and a retarder (sodium gluconate) in a mass ratio of 2:5:1:3:3.
And uniformly mixing the components of the mortar board dry material, and then uniformly mixing with water to obtain the mortar board dry material.
Example 5
The mass ratio of water to mortar board dry material of the mortar board provided by the embodiment is 0.18; wherein, the composition of the mortar board drier is:
540 kg of cement (42.5 model), 620 kg of sand, 20kg of mineral admixture, 40kg of high polymer and 12kg of additive; wherein the sand with the grain size of 20-40 meshes is 110 kg, the sand with the grain size of 40-70 meshes is 280 kg, and the sand with the grain size of 70-140 meshes is 150 kg; the mineral admixture is fly ash; redispersible emulsion powder (5048H model) in high molecular polymer and polyvinyl alcohol (2488 cold-soluble type) with mass ratio of 3:2; the additive is medium-temperature wheel glue (ft-765), an anti-shrinkage agent (P750), a water reducing agent (FOX-C900 model), a defoaming agent (352-B model) and a retarder (sodium citrate) in a mass ratio of 2:5:1:2:8.
And uniformly mixing the components of the mortar board dry material, and then uniformly mixing with water to obtain the mortar board dry material.
Comparative example 1
The mass ratio of water to mortar board dry material of the mortar board provided by the embodiment is 0.1; wherein, the composition of the mortar board drier is:
300 kg of cement (42.5 model), 660 kg of sand, 80kg of mineral admixture, 2kg of high polymer and 15kg of additive; wherein the sand with the grain size of 20-40 meshes is 125 kg, the sand with the grain size of 40-70 meshes is 325 kg, and the sand with the grain size of 70-140 meshes is 210 kg; the mineral admixture is fly ash; redispersible emulsion powder (5048H model) in high molecular polymer and polyvinyl alcohol (2488 cold-soluble type) with mass ratio of 3:1, a step of; the additive is medium-temperature wheel glue (ft-765), an anti-shrinkage agent (P750), a water reducing agent (FOX-C900 model), a defoaming agent (352-B model) and a retarder (tartaric acid) in a mass ratio of 1:2:1:2:5.
And uniformly mixing the components of the mortar board dry material, and then uniformly mixing with water to obtain the mortar board dry material.
Comparative example 2
The mass ratio of water to mortar board dry material of the mortar board provided by the embodiment is 0.1; wherein, the composition of the mortar board drier is:
450 kg of cement (42.5 model), 660 kg of sand, 0kg of mineral admixture, 2kg of high polymer and 15kg of additive; wherein the sand with the grain size of 20-40 meshes is 125 kg, the sand with the grain size of 40-70 meshes is 325 kg, and the sand with the grain size of 70-140 meshes is 210 kg; the mineral admixture is fly ash; redispersible emulsion powder (5048H model) in high molecular polymer and polyvinyl alcohol (2488 cold-soluble type) with mass ratio of 3:1, a step of; the additive is medium-temperature wheel glue (ft-765), an anti-shrinkage agent (P750), a water reducing agent (FOX-C900 model), a defoaming agent (352-B model) and a retarder (citric acid) in a mass ratio of 1:2:1:2:5.
And uniformly mixing the components of the mortar board dry material, and then uniformly mixing with water to obtain the mortar board dry material.
Experimental example
The mortar boards of examples and comparative examples of the present invention were subjected to performance tests in which compressive strength, flexural strength, shrinkage, slump retention time. Wherein, the specific detection method of compressive strength and flexural strength refers to standard GB/T17671-1999, and the specific detection method of shrinkage refers to standard JGJ/T70-2009.
The slump loss prevention time concrete detection method comprises the following steps: the mortar expansion degree is more than or equal to 150mm in retention time, and the concrete detection reference standard GB/T2419-2017 for mortar expansion degree detection.
28d compressive strength, MPa 28d flexural strength, MPa Shrinkage percentage,% Slump retention time, min
Example 1 102.3 20.1 0.05 1h
Example 2 115 22.3 0.1 1h
Example 3 113.5 22.1 0.1 1h
Example 4 116 22.6 0.1 1h
Comparative example 1 75 10.3 0.12 45min
Comparative example 2 77 10.5 0.125 45min
In the using process, the mortar plate is prepared from mortar dry materials by adopting the following preparation process, wherein the preparation process comprises the following steps:
cleaning the template;
brushing a release agent;
paving a steel wire mesh, and supporting and fixing the steel wire mesh by a special fixing piece;
preparing high-fluidity mortar according to the proportion of water to mortar board dry material of 0.14-0.15;
pouring and stirring the mortar, curing, and removing the mold to obtain the dry floor heating mortar board.
Example 6
The embodiment provides a dry floor heating system, includes: a support structure; the supporting structure is a wood keel 4, a graphite plate or a polyurethane plate; if a graphite plate is adopted, a high-density graphite plate is adopted to ensure the strength;
in this embodiment, the wood joist 4 is selected, and at the same time, the wood joist 4 has a uniform height, the flatness is required to deviate within 1mm, and the wood joist 4 is wood subjected to corrosion prevention treatment.
The wood keels 4 are paved on the reinforced concrete layer 1 at intervals, and the height of the wood keels 4 is generally about 30 mm; in the installation process, the wood joist 4 is fixedly connected with the reinforced concrete layer 1 through expansion bolts, and the upper surface of the wood joist 4 is bonded with the mortar board 8 through structural adhesive.
Further, before the wood joist 4 is paved and fixed, a first leveling layer 9 is paved on the reinforced concrete layer 1, specifically, the first leveling layer 9 is leveled by self-leveling mortar, special self-leveling mortar is stirred, and 15-30 mm is constructed according to the flatness of the floor slab of the reinforced concrete layer 1.
An insulation layer 2 is paved on the upper surface of the first leveling layer 9, and the insulation layer 2 is formed by splicing a plurality of insulation boards; the heat insulation board is used for filling the space between the wood keels 4 and supporting the wood keels 4; specifically, in the process of installing the insulation board, the insulation board is cut according to the reserved space of the wood keels 4, and then the insulation board is paved.
The method comprises the steps that an embedding groove for installing the floor heating pipe 5 is preset in the heat-insulating plate, and the floor heating pipe 5 is embedded in the embedding groove of the heat-insulating plate after the heat-insulating plate is paved; by paving the floor heating pipes 5 inside the heat preservation layer 2, the thickness of the whole system is reduced, and the construction efficiency is improved.
A reflecting film 3 is integrally arranged on one side of the heat insulation board floor heating pipe 5, and the reflecting film 3 can be paved along the shape of the caulking groove; the reflecting film 3 and the heat insulation plate are prefabricated into a whole, so that the construction efficiency is improved; meanwhile, the reflecting film 3 is arranged on the heat-insulating plate, so that the heat of the floor heating pipe 5 can be prevented from radiating downwards, and the indoor temperature is ensured.
Paving a mortar board 8 on the upper surface of the wood joist 4, wherein the mortar board 8 is prefabricated by the method provided in any one of the embodiment 1 to the embodiment 5, and the thickness of the mortar board 8 is about 15mm; specific performance parameters are: the compressive strength is more than or equal to 100MPa, the flexural strength is more than or equal to 20MPa, the shrinkage rate is less than or equal to 0.05%, the slump retention time is more than or equal to 30min, and the consistency is 40-50mm.
The mortar board 8 is supported by the wood joist 4, so that a certain space is reserved among the heat preservation layer 2, the floor heating pipe 5 and the mortar board 8, stress between the upper structure and the upper structure is avoided, and the cracking resistance and the safety of the system are improved.
A second leveling layer 6 is paved on the upper surface of the mortar board 8, the second leveling layer 6 is paved by cement and sand, the thickness of the second leveling layer 6 is about 10mm, and a facing layer 7 is paved on the upper surface of the second leveling layer 6.
In this scheme, adopt the prefabricated mortar board 8 that wooden fossil fragments 4 set up to constitute ground warm system structural layer, whole process dry-type construction operation, the efficiency of construction is high, and on-the-spot pollution is little, and the roughness is good, improves user's usage space, and easy dismounting changes, can with follow-up finish coat 7 serialization construction, reduces whole system construction cycle.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.

Claims (4)

1. A dry floor heating system is characterized by comprising a mortar board, wherein the mortar board comprises the following components in parts by weight,
450-550 parts of cement;
450-660 parts of sand;
10-100 parts of mineral admixture;
1-60 parts of high molecular polymer material;
0-15 parts of an additive;
the admixture comprises 0-2 parts of hot-runner glue, 0-5 parts of anti-shrinkage agent, 0-2 parts of water reducer, 0-2 parts of defoamer and 0-10 parts of retarder;
the system comprises:
the support structures are paved on the reinforced concrete layer at intervals;
the heat insulation layer is provided with a plurality of heat insulation boards; the heat insulation board is paved on the reinforced concrete layer; the insulation board is arranged around the supporting structure; a floor heating pipe is embedded in the heat preservation layer;
the mortar plate is paved on the upper surface of the supporting structure; the mortar board is used;
the system further comprises:
the first leveling layer is paved above the reinforced concrete layer and is formed by self-leveling mortar;
the second leveling layer is paved on the upper surface of the mortar board;
the facing layer is paved on the upper surface of the second leveling layer;
the high molecular polymer material includes: redispersible latex powder and polyvinyl alcohol;
comprising the following steps: 1-50 parts of redispersible emulsion powder and 1-10 parts of polyvinyl alcohol;
a reflecting film is arranged on one side of the heat preservation layer far away from the reinforced concrete layer, and the reflecting film and the heat preservation layer are integrally arranged;
the addition amount of each raw material is not 0.
2. The dry floor heating system of claim 1, wherein the sand has a particle size of 20-140 mesh;
comprising the following steps: 75-125 parts of sand with the grain size of 20-40 meshes, 275-325 parts of sand with the grain size of 40-70 meshes and 125-210 parts of sand with the grain size of 70-140 meshes.
3. The dry floor heating system of claim 1, wherein the mineral admixture is at least one of mineral powder, silica fume, fly ash.
4. The dry floor heating system of claim 1, wherein the support structure is a wood joist, a graphite plate, or a polyurethane plate.
CN202111164923.7A 2021-09-30 2021-09-30 Mortar board and dry floor heating system Active CN113683368B (en)

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CN114319782A (en) * 2022-01-25 2022-04-12 中国建筑第五工程局有限公司 Dry-type ground construction method for assembled building kitchen

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