CN115140986A - Heat conduction self-leveling material for ground heating backfill and preparation method thereof - Google Patents
Heat conduction self-leveling material for ground heating backfill and preparation method thereof Download PDFInfo
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- CN115140986A CN115140986A CN202210964740.1A CN202210964740A CN115140986A CN 115140986 A CN115140986 A CN 115140986A CN 202210964740 A CN202210964740 A CN 202210964740A CN 115140986 A CN115140986 A CN 115140986A
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- portland cement
- ordinary portland
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- 239000000463 material Substances 0.000 title claims abstract description 52
- 238000010438 heat treatment Methods 0.000 title claims abstract description 45
- 238000002360 preparation method Methods 0.000 title claims abstract description 22
- 239000011398 Portland cement Substances 0.000 claims abstract description 61
- 239000007770 graphite material Substances 0.000 claims abstract description 51
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 45
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 42
- 229910001570 bauxite Inorganic materials 0.000 claims abstract description 42
- 239000004917 carbon fiber Substances 0.000 claims abstract description 42
- 239000001913 cellulose Substances 0.000 claims abstract description 41
- 229920002678 cellulose Polymers 0.000 claims abstract description 41
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 41
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 40
- 239000002994 raw material Substances 0.000 claims abstract description 29
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000002893 slag Substances 0.000 claims description 64
- 229910000831 Steel Inorganic materials 0.000 claims description 55
- 239000010959 steel Substances 0.000 claims description 55
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 46
- 238000005303 weighing Methods 0.000 claims description 26
- 238000000034 method Methods 0.000 claims description 25
- 239000002245 particle Substances 0.000 claims description 24
- 229910052742 iron Inorganic materials 0.000 claims description 23
- 238000007873 sieving Methods 0.000 claims description 16
- 238000002156 mixing Methods 0.000 claims description 15
- 238000003756 stirring Methods 0.000 claims description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 12
- 229910021389 graphene Inorganic materials 0.000 claims description 7
- 239000000843 powder Substances 0.000 claims description 7
- 238000012216 screening Methods 0.000 claims description 3
- 238000004134 energy conservation Methods 0.000 abstract description 2
- 238000005188 flotation Methods 0.000 description 7
- 230000005855 radiation Effects 0.000 description 3
- 238000005057 refrigeration Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000013530 defoamer Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- 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
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/38—Fibrous materials; Whiskers
- C04B14/386—Carbon
-
- 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
- C04B18/14—Waste materials; Refuse from metallurgical processes
- C04B18/141—Slags
- C04B18/142—Steelmaking slags, converter slags
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00663—Uses not provided for elsewhere in C04B2111/00 as filling material for cavities or the like
-
- 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
- C04B2201/30—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values
- C04B2201/32—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values for the thermal conductivity, e.g. K-factors
-
- 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
Abstract
The invention relates to the field of ground heating backfill materials, in particular to a heat conduction self-leveling material for ground heating backfill and a preparation method thereof, wherein the heat conduction self-leveling material comprises the following raw materials: 10-50 parts of ordinary portland cement, 20-60 parts of magnetic aggregate, 1-20 parts of bauxite, 1-4 parts of a water reducing agent, 0.3-5 parts of a defoaming agent, 1-5 parts of carbon fiber, 0.1-5 parts of cellulose and 1-30 parts of a graphite material; the material has good thermal conductivity, energy conservation and simple preparation process.
Description
Technical Field
The invention relates to the field of ground heating backfill materials, in particular to a heat conduction self-leveling material for ground heating backfill and a preparation method thereof.
Background
With the development of science and technology, the ground heating is the most basic facility in a building, can help people to warm, is a floor radiation material, takes the whole ground as a radiator, uniformly heats the whole ground through a heating medium in a floor radiation layer, supplies heat to the indoor through the ground in a radiation and convection heat transfer mode, and achieves the purpose of comfortable heating; and poor concrete fluidity leads to the low efficiency of construction, extravagant manpower and materials.
At present, a plurality of places utilize floor heating to implement centralized cooling, in hot summer, air conditioners are not used any more to make cool air, the floor heating cooling can be free of blowing and noise, and as a backfill material, common concrete has poor temperature conductivity and low cold conduction efficiency, so that the effect of floor heating refrigeration is reduced.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a heat conduction self-leveling material for ground heating backfill and a preparation method thereof, wherein the heat conduction self-leveling material has the advantages of good heat conduction performance, energy conservation and simple preparation process.
The aim of the invention is achieved by the following measures: a temperature conduction self-leveling material for ground heating backfill is composed of the following raw materials: 10-50 parts of ordinary portland cement, 20-60 parts of magnetic aggregate, 1-20 parts of bauxite, 1-4 parts of water reducing agent, 0.3-5 parts of defoaming agent, 1-5 parts of carbon fiber, 0.1-5 parts of cellulose and 1-30 parts of graphite material.
Preferably, the heat conduction self-leveling material for ground heating backfill consists of the following raw materials: 30 parts of ordinary portland cement, 40 parts of magnetic aggregate, 10 parts of bauxite, 2.5 parts of a water reducing agent, 2.7 parts of a defoaming agent, 3 parts of carbon fiber, 2.5 parts of cellulose and 15 parts of a graphite material.
Preferably, the magnetic aggregate is floated iron ore tailings, and the grade of the magnetic aggregate is 30-50%.
Preferably, the magnetic aggregate is steel slag treated by a hot slag smoldering process.
Preferably, the Portland cement is Portland cement No. 425.
Preferably, the graphite material is one of graphene powder or graphite powder.
A preparation method of a heat conduction self-leveling material for ground heating backfill comprises the following steps:
s1: preparing raw materials, weighing 10-50 parts of ordinary portland cement, 20-60 parts of magnetic aggregate, 1-20 parts of bauxite, 1-4 parts of water reducing agent, 0.3-5 parts of defoaming agent, 1-5 parts of carbon fiber, 0.1-5 parts of cellulose and 1-30 parts of graphite material;
s2: and (3) mixing, namely putting the ordinary portland cement prepared in the step (S1), magnetic aggregate, bauxite, a water reducing agent, a defoaming agent, carbon fiber, cellulose and a graphite material into a stirrer, and uniformly stirring to obtain a finished product.
Preferably, the preparation method of the heat conduction self-leveling material for ground heating backfill comprises the following steps:
s1: preparing raw materials, weighing 10-50 parts of ordinary portland cement, 1-20 parts of bauxite, 1-4 parts of a water reducing agent, 0.3-5 parts of a defoaming agent, 1-5 parts of carbon fibers, 0.1-5 parts of cellulose and 1-30 parts of a graphite material;
s2: preparing magnetic aggregate, weighing 20-60 parts of steel slag treated by the hot slag disintegrating process, putting the steel slag into a double-roller crusher, adjusting the gap between the double rollers to 1-5 cm, then sieving the steel slag by a sieve, and respectively obtaining the following particle sizes: 0.5-1 cm, 3-5 mm, 20-40 meshes and 60-80 meshes to obtain the magnetic aggregate;
s3: and (3) mixing, namely simultaneously putting the ordinary portland cement prepared in the step (S1), bauxite, a water reducing agent, a defoaming agent, carbon fibers, cellulose, a graphite material and the magnetic aggregate prepared in the step (S2) into a stirrer, and uniformly stirring to obtain a finished product.
Preferably, the preparation method of the heat conduction self-leveling material for ground heating backfill comprises the following steps:
s1: preparing raw materials, weighing 10-50 parts of ordinary portland cement, 1-20 parts of bauxite, 1-4 parts of a water reducing agent, 0.3-5 parts of a defoaming agent, 1-5 parts of carbon fibers, 0.1-5 parts of cellulose and 1-30 parts of a graphite material;
s2: preparing magnetic aggregate, weighing 20-60 parts of floated iron ore tailings, putting the iron ore tailings into a double-roller crusher, adjusting the gap between the double rollers to 1-5 cm, then sieving the iron ore tailings by a screen, and screening the iron ore tailings to obtain particles with the particle sizes respectively as follows: tailings with the grain size of 0.5-1 cm, 3-5 mm, 20-40 meshes and 60-80 meshes are obtained to obtain the magnetic aggregate;
s3: and (3) mixing, namely putting the ordinary portland cement prepared in the step (S1), bauxite, a water reducing agent, a defoaming agent, carbon fibers, cellulose, a graphite material and the magnetic aggregate prepared in the step (S2) into a stirrer at the same time, and uniformly stirring to obtain a finished product.
The magnetic aggregate is added in the formula because the magnetic material resists high temperature and does not expand at 80 ℃, resists low temperature and does not deform and contract at 60 ℃, and meanwhile, the magnetic material has quick heat conduction and cold conduction time, high heat conduction efficiency and minimum heat transfer or cold loss. The magnetic aggregate in the invention can be selected from iron ore tailings which are subjected to factory flotation (the flotation process is the prior art, and the iron ore factory generally adopts an environment-friendly flotation process), the grade is 30-50%, the crushed iron ore tailings are sieved by screens of different grades, and then the crushed iron ore tailings are mixed with all raw materials, namely, the materials of different grades (particle sizes) are sieved, in the process of mixing the raw materials, small particles fill gaps of large particles, and the gaps are filled, so that the overall strength of the materials is increased, and the materials are firmer and more durable.
The magnetic aggregate can also be selected as steel slag treated by a hot slag disintegrating process, because the steel slag has certain instability, but the steel slag treated by the hot slag disintegrating process eliminates the instability of the steel slag, the hot slag disintegrating process is a mature traditional process in various large steel mills, and the process is only described briefly here: the steel slag is put into a container with a cover, cold water is added into the container to enable the steel slag to become steam, slag and iron are separated through expansion and cold contraction, large steel slag is cracked automatically through the thermal reaction of water and the steel slag in the hot-disintegration process, free calcium oxide (active calcareous) of the steel slag is digested by water and undergoes volume expansion, the hydration reaction is accelerated, the steel slag is pulverized through self-decomposition, and the granularity of the steel slag after the expansion decomposition is smaller than 20mm. The granularity after hot slag smoldering is small, the property is stable, and the instability of the steel slag is eliminated. Through detection, the Mohs hardness of the common stone is 7, the Mohs hardness of the steel slag is 8, the grade of the steel slag is higher, the magnetic conductivity is better, the refractoriness is 1350 ℃, the steel slag is greatly superior to the common stone, the frost resistance and durability of the steel slag after hot smoldering treatment are two times of the service life of common concrete, and the thermal expansion and cold shrinkage rate of the common concrete is reduced. The steel slag is selected as the magnetic aggregate of the invention, so that the comprehensive utilization rate of the steel slag can be improved, the steel slag is easier to prepare, the cost is low, the resource is saved, and the waste can be recycled. The steel mills of the hot slag disintegrating process are as follows: shanxi dragon steel, jianlong steel, danyang steel, saddle steel, sand steel, economic steel, taiyuan steel and the like, wherein the steel slag is purchased from the above factories.
The carbon fiber can improve the thermal conductivity and resist cracking; bauxite increases heat resistance and increases strength.
The finished product of the invention is dry material, and is packaged in bags, and when in use, the dry material is added with water and stirred for backfilling.
The invention has the beneficial effects that: the heat-conducting self-leveling material prepared by the invention has good heat-conducting property, high heat-conducting and cold-conducting efficiency, simple preparation process, high construction efficiency and good fluidity, and the heat-conducting coefficient is detected to be 26.9W/(m.K), after the heat-conducting material is used for ground heating backfill, the indoor heat can be rapidly conducted and heated to the standard temperature within 2-3 hours during heating in winter; when refrigerating in summer, the indoor air can be rapidly cooled to the standard temperature within 4-6 hours, the refrigeration can be saved by 40% compared with the traditional air conditioner by adopting floor heating refrigeration and matching with the backfill material of the invention, the temperature is kept constant to 25-26 ℃, the energy is saved by more than 20% compared with the traditional concrete as the backfill material, and the energy consumption is reduced.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1: a temperature conduction self-leveling material for ground heating backfill is composed of the following raw materials: 10Kg of ordinary portland cement, 20Kg of magnetic aggregate, 1Kg of bauxite, 1Kg of water reducing agent, 0.3Kg of antifoaming agent, 1Kg of carbon fiber, 0.1Kg of cellulose, and 1Kg of graphite material.
The magnetic aggregate is steel slag treated by a hot slag disintegrating process.
The ordinary portland cement is No. 425 ordinary portland cement.
The graphite material is graphene powder.
The preparation method of the heat conduction self-leveling material for the ground heating backfill comprises the following steps:
s1: preparing raw materials, weighing 10Kg of ordinary portland cement, 1Kg of bauxite, 1Kg of water reducer, 0.3Kg of defoamer, 1Kg of carbon fiber, 0.1Kg of cellulose and 1Kg of graphite material;
s2: preparing magnetic aggregate, weighing 20Kg of steel slag treated by the hot slag disintegrating process, putting into a double-roller crusher, adjusting the gap between the double rollers to 1 cm, then sieving by a screen, and sieving into particles with the particle sizes respectively: 0.5 cm, 3 mm, 20 meshes and 60 meshes of steel slag to obtain magnetic aggregate;
s3: and (3) mixing, namely simultaneously putting the ordinary portland cement prepared in the step (S1), bauxite, a water reducing agent, a defoaming agent, carbon fibers, cellulose, a graphite material and the magnetic aggregate prepared in the step (S2) into a stirrer, and uniformly stirring to obtain a finished product.
Example 2: a temperature conduction self-leveling material for ground heating backfill is composed of the following raw materials: 50Kg of ordinary portland cement, 60Kg of magnetic aggregate, 20Kg of bauxite, 4Kg of water reducing agent, 5Kg of antifoaming agent, 5Kg of carbon fiber, 5Kg of cellulose, and 30Kg of graphite material.
The magnetic aggregate is steel slag treated by a hot slag disintegrating process.
The ordinary portland cement is No. 425 ordinary portland cement.
The graphite material is graphite powder.
The preparation method of the heat conduction self-leveling material for ground heating backfill comprises the following steps:
s1: preparing raw materials, namely weighing 50Kg of ordinary portland cement, 20Kg of bauxite, 4Kg of water reducing agent, 5Kg of defoaming agent, 5Kg of carbon fiber, 5Kg of cellulose and 30Kg of graphite material;
s2: preparing magnetic aggregate, weighing 60Kg of steel slag treated by the hot slag disintegrating process, putting the steel slag into a double-roller crusher, adjusting the gap between the double rollers to 5 cm, then sieving the steel slag by a sieve, and sieving the steel slag into particles with the particle sizes respectively as follows: 1 cm, 5 mm, 40 meshes and 80 meshes of steel slag to obtain magnetic aggregate;
s3: and (3) mixing, namely simultaneously putting the ordinary portland cement prepared in the step (S1), bauxite, a water reducing agent, a defoaming agent, carbon fibers, cellulose, a graphite material and the magnetic aggregate prepared in the step (S2) into a stirrer, and uniformly stirring to obtain a finished product.
Example 3: a temperature conduction self-leveling material for ground heating backfill is composed of the following raw materials: 30Kg of ordinary portland cement, 40Kg of magnetic aggregate, 10Kg of bauxite, 2.5Kg of water reducing agent, 2.7Kg of antifoaming agent, 3Kg of carbon fiber, 2.5Kg of cellulose, and 15Kg of graphite material.
The magnetic aggregate is steel slag treated by a hot slag disintegrating process.
The ordinary portland cement is No. 425 ordinary portland cement.
The graphite material is graphene powder.
The preparation method of the heat conduction self-leveling material for the ground heating backfill comprises the following steps:
s1: preparing raw materials, weighing 30Kg of ordinary portland cement, 10Kg of bauxite, 2.5Kg of water reducing agent, 2.7Kg of defoaming agent, 3Kg of carbon fiber, 2.5Kg of cellulose and 15Kg of graphite material;
s2: preparing magnetic aggregate, weighing 40Kg of steel slag treated by the hot slag disintegrating process, putting the steel slag into a double-roller crusher, adjusting the gap between the double rollers to 3 cm, then sieving the steel slag by a screen, and sieving the steel slag into particles with the particle sizes respectively as follows: 0.75 cm, 4 mm, 30 meshes and 70 meshes of steel slag to obtain magnetic aggregate;
s3: and (3) mixing, namely simultaneously putting the ordinary portland cement prepared in the step (S1), bauxite, a water reducing agent, a defoaming agent, carbon fibers, cellulose, a graphite material and the magnetic aggregate prepared in the step (S2) into a stirrer, and uniformly stirring to obtain a finished product.
Example 4: a temperature conduction self-leveling material for ground heating backfill is composed of the following raw materials: 10Kg of ordinary portland cement, 20Kg of magnetic aggregate, 1Kg of bauxite, 1Kg of water reducing agent, 0.3Kg of antifoaming agent, 1Kg of carbon fiber, 0.1Kg of cellulose, and 1Kg of graphite material.
The magnetic aggregate is the tailings of the iron ore which is subjected to flotation, and the grade is 30 percent.
The ordinary portland cement is No. 425 ordinary portland cement.
The graphite material is graphene powder.
The preparation method of the heat conduction self-leveling material for the ground heating backfill comprises the following steps:
s1: preparing raw materials, weighing 10Kg of ordinary portland cement, 1Kg of bauxite, 1Kg of water reducing agent, 0.3Kg of antifoaming agent, 1Kg of carbon fiber, 0.1Kg of cellulose and 1Kg of graphite material;
s2: preparing magnetic aggregate, weighing 20Kg of tailings of the floated iron ore, putting the tailings into a double-roller crusher, adjusting the gap between the double rollers to 1 cm, then sieving the tailings by a sieve to obtain particles with the particle sizes respectively as follows: tailings of 0.5 cm, 3 mm, 20 meshes and 60 meshes to obtain the magnetic aggregate;
s3: and (3) mixing, namely putting the ordinary portland cement prepared in the step (S1), bauxite, a water reducing agent, a defoaming agent, carbon fibers, cellulose, a graphite material and the magnetic aggregate prepared in the step (S2) into a stirrer at the same time, and uniformly stirring to obtain a finished product.
Example 5: a temperature conduction self-leveling material for ground heating backfill is composed of the following raw materials: 50Kg of ordinary portland cement, 60Kg of magnetic aggregate, 20Kg of bauxite, 4Kg of water reducing agent, 5Kg of antifoaming agent, 5Kg of carbon fiber, 5Kg of cellulose and 30Kg of graphite material.
The magnetic aggregate is the tailings of the iron ore subjected to flotation, and the grade of the magnetic aggregate is 50%.
The ordinary portland cement is No. 425 ordinary portland cement.
The graphite material is graphite powder.
The preparation method of the heat conduction self-leveling material for ground heating backfill comprises the following steps:
s1: preparing raw materials, namely weighing 50Kg of ordinary portland cement, 20Kg of bauxite, 4Kg of water reducing agent, 5Kg of defoaming agent, 5Kg of carbon fiber, 5Kg of cellulose and 30Kg of graphite material;
s2: preparing magnetic aggregate, weighing 60Kg of tailings of the floated iron ore, putting the tailings into a double-roller crusher, adjusting the gap between the double rollers to 5 cm, then sieving the tailings by a sieve to obtain particles with the particle sizes respectively as follows: tailings with the grain size of 1 cm, 5 mm, 40 meshes and 80 meshes are obtained to obtain the magnetic aggregate;
s3: and (3) mixing, namely putting the ordinary portland cement prepared in the step (S1), bauxite, a water reducing agent, a defoaming agent, carbon fibers, cellulose, a graphite material and the magnetic aggregate prepared in the step (S2) into a stirrer at the same time, and uniformly stirring to obtain a finished product.
Example 6: a temperature conduction self-leveling material for ground heating backfill is composed of the following raw materials: 30Kg of ordinary portland cement, 40Kg of magnetic aggregate, 10Kg of bauxite, 2.5Kg of water reducing agent, 2.7Kg of antifoaming agent, 3Kg of carbon fiber, 2.5Kg of cellulose, and 15Kg of graphite material.
The magnetic aggregate is the tailings of the iron ore subjected to flotation, and the grade of the magnetic aggregate is 40%.
The ordinary portland cement is No. 425 ordinary portland cement.
The graphite material is graphene powder.
The preparation method of the heat conduction self-leveling material for the ground heating backfill comprises the following steps:
s1: preparing raw materials, namely weighing 30Kg of ordinary portland cement, 10Kg of bauxite, 2.5Kg of water reducing agent, 2.7Kg of antifoaming agent, 3Kg of carbon fiber, 2.5Kg of cellulose and 15Kg of graphite material;
s2: preparing magnetic aggregate, weighing 40Kg of tailings of the floated iron ore, putting the tailings into a double-roller crusher, adjusting the gap between the double rollers to 3 cm, then sieving the tailings by a sieve to obtain particles with the particle sizes respectively as follows: tailings of 0.75 cm, 4 mm, 30 meshes and 70 meshes are obtained to obtain the magnetic aggregate;
s3: and (3) mixing, namely putting the ordinary portland cement prepared in the step (S1), bauxite, a water reducing agent, a defoaming agent, carbon fibers, cellulose, a graphite material and the magnetic aggregate prepared in the step (S2) into a stirrer at the same time, and uniformly stirring to obtain a finished product.
Example 7: a temperature conduction self-leveling material for ground heating backfill is composed of the following raw materials: 15Kg of ordinary portland cement, 20Kg of magnetic aggregate, 20Kg of bauxite, 2.5Kg of water reducing agent, 0.7Kg of antifoaming agent, 5Kg of carbon fiber, 1Kg of cellulose, and 15Kg of graphite material.
The magnetic aggregate is steel slag treated by a hot slag disintegrating process.
The ordinary portland cement is No. 425 ordinary portland cement.
The graphite material is graphene powder.
The preparation method of the heat conduction self-leveling material for ground heating backfill comprises the following steps:
s1: preparing raw materials, weighing 15Kg of ordinary portland cement, 20Kg of bauxite, 2.5Kg of water reducing agent, 0.7Kg of defoaming agent, 5Kg of carbon fiber, 1Kg of cellulose and 15Kg of graphite material;
s2: preparing magnetic aggregate, weighing 20Kg of steel slag treated by the hot slag disintegrating process, putting into a double-roller crusher, adjusting the gap between the double rollers to 2 cm, then sieving by a screen, and sieving into particles with the particle sizes respectively: steel slag of 0.5 cm, 5 mm, 35 meshes and 75 meshes to obtain magnetic aggregate;
s3: and (3) mixing, namely putting the ordinary portland cement prepared in the step (S1), bauxite, a water reducing agent, a defoaming agent, carbon fibers, cellulose, a graphite material and the magnetic aggregate prepared in the step (S2) into a stirrer at the same time, and uniformly stirring to obtain a finished product.
Example 8: a temperature conduction self-leveling material for ground heating backfill is composed of the following raw materials: 50Kg of ordinary portland cement, 20Kg of magnetic aggregate, 10Kg of bauxite, 3Kg of water reducing agent, 2.7Kg of antifoaming agent, 1Kg of carbon fiber, 4.5Kg of cellulose, 30Kg of graphite material.
The magnetic aggregate is the tailings of the iron ore subjected to flotation, and the grade of the magnetic aggregate is 50%.
The ordinary portland cement is No. 425 ordinary portland cement.
The graphite material is graphite powder.
The preparation method of the heat conduction self-leveling material for the ground heating backfill comprises the following steps:
s1: preparing raw materials, weighing 50Kg of ordinary portland cement, 10Kg of bauxite, 3Kg of water reducing agent, 2.7Kg of antifoaming agent, 1Kg of carbon fiber, 4.5Kg of cellulose and 30Kg of graphite material;
s2: preparing magnetic aggregate, weighing 20Kg of tailings of the floated iron ore, putting the tailings into a double-roller crusher, adjusting the gap between the double rollers to 5 cm, then sieving the tailings by a screen, and screening the tailings to obtain the magnetic aggregate with the particle size respectively: tailings of 0.75 cm, 3 mm, 40 meshes and 65 meshes are obtained to obtain the magnetic aggregate;
s3: and (3) mixing, namely putting the ordinary portland cement prepared in the step (S1), bauxite, a water reducing agent, a defoaming agent, carbon fibers, cellulose, a graphite material and the magnetic aggregate prepared in the step (S2) into a stirrer at the same time, and uniformly stirring to obtain a finished product.
The following table is an experimental test of the backfill material made by the present invention:
finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still make modifications to the technical solutions described in the foregoing embodiments, or make equivalent substitutions and improvements to part of the technical features of the foregoing embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The utility model provides a lead temperature from levelling material for ground warms up backfill which characterized in that: the feed consists of the following raw materials: 10-50 parts of ordinary portland cement, 20-60 parts of magnetic aggregate, 1-20 parts of bauxite, 1-4 parts of water reducing agent, 0.3-5 parts of defoaming agent, 1-5 parts of carbon fiber, 0.1-5 parts of cellulose and 1-30 parts of graphite material.
2. The heat conduction self-leveling material for ground heating backfill according to claim 1, characterized in that: the feed consists of the following raw materials: 30 parts of ordinary portland cement, 40 parts of magnetic aggregate, 10 parts of bauxite, 2.5 parts of a water reducing agent, 2.7 parts of a defoaming agent, 3 parts of carbon fiber, 2.5 parts of cellulose and 15 parts of a graphite material.
3. The temperature conduction self-leveling material for ground heating backfill according to the claim 1 or the claim 2, is characterized in that: the magnetic aggregate is steel slag treated by a hot slag smoldering process.
4. The temperature conduction self-leveling material for ground heating backfill according to the claim 1 or the claim 2, is characterized in that: the magnetic aggregate is floated iron ore tailings, and the grade of the magnetic aggregate is 30-50%.
5. The temperature conduction self-leveling material for ground heating backfill according to the claim 1 or the claim 2, is characterized in that: the ordinary portland cement is No. 425 ordinary portland cement.
6. The temperature conduction self-leveling material for ground heating backfill according to claim 1 or 2, characterized in that: the graphite material is graphene powder or graphite powder.
7. The preparation method of the temperature conduction self-leveling material for ground heating backfill according to any one of claims 1-6 is characterized in that: the method comprises the following steps:
s1: preparing raw materials, weighing 10-50 parts of ordinary portland cement, 20-60 parts of magnetic aggregate, 1-20 parts of bauxite, 1-4 parts of water reducing agent, 0.3-5 parts of defoaming agent, 1-5 parts of carbon fiber, 0.1-5 parts of cellulose and 1-30 parts of graphite material;
s2: and (3) mixing, namely putting the ordinary portland cement prepared in the step (S1), magnetic aggregate, bauxite, a water reducing agent, a defoaming agent, carbon fiber, cellulose and a graphite material into a stirrer, and uniformly stirring to obtain a finished product.
8. The preparation method of the heat conduction self-leveling material for ground heating backfill according to claim 7, is characterized in that: the method comprises the following steps:
s1: preparing raw materials, weighing 10-50 parts of ordinary portland cement, 1-20 parts of bauxite, 1-4 parts of a water reducing agent, 0.3-5 parts of a defoaming agent, 1-5 parts of carbon fibers, 0.1-5 parts of cellulose and 1-30 parts of a graphite material;
s2: preparing magnetic aggregate, weighing 20-60 parts of steel slag treated by the hot slag disintegrating process, putting the steel slag into a double-roller crusher, adjusting the gap between the double rollers to 1-5 cm, then sieving the steel slag by a sieve, and respectively obtaining the following particle sizes: 0.5-1 cm, 3-5 mm, 20-40 meshes and 60-80 meshes to obtain the magnetic aggregate;
s3: and (3) mixing, namely simultaneously putting the ordinary portland cement prepared in the step (S1), bauxite, a water reducing agent, a defoaming agent, carbon fibers, cellulose, a graphite material and the magnetic aggregate prepared in the step (S2) into a stirrer, and uniformly stirring to obtain a finished product.
9. The preparation method of the heat conduction self-leveling material for ground heating backfill according to claim 7, is characterized in that: the method comprises the following steps:
s1: preparing raw materials, weighing 10-50 parts of ordinary portland cement, 1-20 parts of bauxite, 1-4 parts of a water reducing agent, 0.3-5 parts of a defoaming agent, 1-5 parts of carbon fibers, 0.1-5 parts of cellulose and 1-30 parts of a graphite material;
s2: preparing magnetic aggregate, weighing 20-60 parts of floated iron ore tailings, putting the iron ore tailings into a double-roller crusher, adjusting the gap between double rollers to 1-5 cm, then sieving the iron ore tailings by a screen, and screening the iron ore tailings into particles with the particle sizes respectively as follows: tailings with the grain size of 0.5-1 cm, 3-5 mm, 20-40 meshes and 60-80 meshes are obtained to obtain the magnetic aggregate;
s3: and (3) mixing, namely simultaneously putting the ordinary portland cement prepared in the step (S1), bauxite, a water reducing agent, a defoaming agent, carbon fibers, cellulose, a graphite material and the magnetic aggregate prepared in the step (S2) into a stirrer, and uniformly stirring to obtain a finished product.
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| KR20060006366A (en) * | 2004-07-15 | 2006-01-19 | 박종진 | The composition of self-leveling mortar by using a magnetite powder |
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| CN107963850A (en) * | 2017-09-14 | 2018-04-27 | 杨智航 | A kind of cracking resistance high heat conduction mortar and its preparation method and application |
| CN108164217A (en) * | 2018-01-09 | 2018-06-15 | 郑州大学 | A kind of room temperature maintenance ultra-high performance concrete and preparation method thereof |
| WO2020220542A1 (en) * | 2019-04-29 | 2020-11-05 | 中建材创新科技研究院有限公司 | Ardealite self-leveling mortar, and preparation method therefor and application thereof |
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| KR20060006366A (en) * | 2004-07-15 | 2006-01-19 | 박종진 | The composition of self-leveling mortar by using a magnetite powder |
| CN1786200A (en) * | 2004-12-07 | 2006-06-14 | 中国京冶建设工程承包公司 | Thermal air tight treatment method of hot state steel slag |
| CN107963850A (en) * | 2017-09-14 | 2018-04-27 | 杨智航 | A kind of cracking resistance high heat conduction mortar and its preparation method and application |
| CN108164217A (en) * | 2018-01-09 | 2018-06-15 | 郑州大学 | A kind of room temperature maintenance ultra-high performance concrete and preparation method thereof |
| WO2020220542A1 (en) * | 2019-04-29 | 2020-11-05 | 中建材创新科技研究院有限公司 | Ardealite self-leveling mortar, and preparation method therefor and application thereof |
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