CN111217579A - Light sand-free backfill material for ground heating backfill and preparation method thereof - Google Patents
Light sand-free backfill material for ground heating backfill and preparation method thereof Download PDFInfo
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- CN111217579A CN111217579A CN202010122523.9A CN202010122523A CN111217579A CN 111217579 A CN111217579 A CN 111217579A CN 202010122523 A CN202010122523 A CN 202010122523A CN 111217579 A CN111217579 A CN 111217579A
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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
- C04B28/14—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 calcium sulfate cements
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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
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/02—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by adding chemical blowing agents
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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
- 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
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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
- 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
- C04B2111/00706—Uses not provided for elsewhere in C04B2111/00 as filling material for cavities or the like around pipelines or the like
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/40—Porous or lightweight materials
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention relates to the field of building materials, in particular to a light sand-free backfill material for ground heating backfill and a preparation method thereof, wherein the light sand-free backfill material comprises the following raw materials of 2.5-3.5 parts of ordinary portland cement, 1.5-2.5 parts of sulphoaluminate cement, 0.8-1.3 parts of gypsum, 0.01-0.02 part of polycarboxylic acid water reducing agent, 0.01-0.03 part of cellulose ether, 0.008-0.013 part of PP fiber, 0.008-0.013 part of early strength agent, 0.03-0.05 part of manganese dioxide, 0.3-0.5 part of hydrogen peroxide and 3-4 parts of water; the invention has simple process, the backfill material is composed of the raw materials and is used for floor heating filling, the quality is stable, and the cost is low.
Description
Technical Field
The invention relates to the field of building materials, in particular to a light sand-free backfill material for ground heating backfill and a preparation method thereof.
Background
With the large-area popularization of floor heating, the market capacity of floor heating backfill materials is also increasing, the backfill materials which are most widely applied at present are common pea-stone concrete and thick-layer self-leveling mortar, the pea-stone concrete is backfilled, the quality is difficult to control, the construction efficiency is low, the backfill materials are the initial backfill mode and are gradually replaced by the thick-layer self-leveling mortar, the thick-layer self-leveling mortar can be mechanically constructed, the materials are designed by accurate matching ratio of a factory, the construction efficiency is high, the quality is easy to control, the risks of cracking, hollowing and the like can be reduced, the flatness of the backfill materials is incomparable to manual leveling, but the material consumption of the first two types of mortar is huge in backfill construction, and particularly the consumption of gravels is reduced; with the increase of environmental protection pressure, the production capacity of the mortar is continuously reduced no matter the sand is mined or other raw materials are produced, and how to save the raw materials and meet the performance requirement of the mortar becomes a problem which has to be considered by the industry.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, avoid low working efficiency of ground heating during backfilling and poor quality control of backfilling materials, and provides a light sand-free backfilling material for ground heating backfilling and a preparation method thereof.
The aim of the invention is achieved by the following measures: a light sand-free backfill material for ground heating backfill is composed of the following raw materials, 2.5-3.5 parts of ordinary portland cement, 1.5-2.5 parts of sulpho-aluminum cement, 0.8-1.3 parts of gypsum, 0.01-0.02 part of a polycarboxylic acid water reducing agent, 0.01-0.03 part of cellulose ether, 0.008-0.013 part of PP fiber, 0.008-0.013 part of an early strength agent, 0.03-0.05 part of manganese dioxide, 0.3-0.5 part of hydrogen peroxide and 3-4 parts of water.
The light sand-free backfill material for ground heating backfill comprises the following raw materials of 3 parts of ordinary portland cement, 2 parts of sulpho-aluminum cement, 1 part of gypsum, 0.015 part of polycarboxylic acid water reducing agent, 0.02 part of cellulose ether, 0.01 part of PP fiber, 0.01 part of early strength agent, 0.04 part of manganese dioxide, 0.4 part of hydrogen peroxide and 3.5 parts of water.
The light sand-free backfill material for ground heating backfill is characterized in that the PP fibers are 6mm long.
The light sand-free backfill material for ground heating backfill is characterized in that the hydrogen peroxide is 50% hydrogen peroxide.
The preparation method of the light sand-free backfill material for ground heating backfill comprises the following steps:
s1: preparing materials, namely weighing 2.5-3.5 parts of ordinary portland cement, 1.5-2.5 parts of sulphoaluminate cement, 0.8-1.3 parts of gypsum, 0.01-0.02 part of polycarboxylic acid water reducing agent, 0.01-0.03 part of cellulose ether, 0.008-0.013 part of PP fiber, 0.008-0.013 part of early strength agent, 0.03-0.05 part of manganese dioxide, 0.3-0.5 part of hydrogen peroxide and 3-4 parts of water for later use;
s2: pulping, namely putting the ordinary portland cement, the sulphoaluminate cement, the gypsum, the polycarboxylic acid water reducer, the cellulose ether, the PP fiber and the early strength agent prepared in the step S1 into a mixer, adding the water prepared in the step S1, stirring for 2min at the stirring speed of 50-60 rpm, and preparing slurry to obtain slurry;
s3: and mixing, namely adding the manganese dioxide prepared in the step S1 and hydrogen peroxide into the slurry prepared in the step S2, and continuously stirring for 2min at the stirring speed of 30-40 r/min to obtain a finished product.
The ordinary portland cement is a hydraulic cementing material prepared by grinding portland cement clinker, 5-20% of mixed material and a proper amount of gypsum, and has the characteristics of high strength, large hydration heat, good frost resistance, small dry shrinkage, good wear resistance and good carbonization resistance. The sulpho-aluminous cement is purchased from Gansu Sanjie New materials Co. The gypsum is monoclinic mineral, is hydrate of calcium sulfate (CaSO4) as main chemical component, is an industrial material and building material with wide application, can be used for cement retarder, gypsum building product, model making and the like, and has excellent sound insulation, heat insulation and fire resistance due to the microporous structure and the heating dehydration property of the gypsum and the product thereof. The polycarboxylate water reducing agent is a high-performance water reducing agent, and is a cement dispersing agent in the application of cement concrete. The cellulose ether has thickening and suspending effects in the slurry, can effectively prevent the slurry from being separated, and can stably disperse air bubbles in the prepared slurry. The PP fiber has good chemical stability, no water absorption, light weight and higher tensile strength, and has crack resistance when being used as a building materialThe effect, the thinning crack and the effective inhibition of the plastic shrinkage of the concrete, and the 6mmPP fiber is purchased from Tianyi engineering fiber company Limited in Changzhou city. The early strength agent is one of concrete additives, the concrete early strength agent is an additive which can improve the early strength of concrete and has no obvious influence on the later strength, and the early strength agent mainly plays a role in accelerating the hydration speed of cement. Physical properties of manganese dioxide: black amorphous powder, or black orthorhombic crystals. Solubility: the manganese dioxide in the invention is used as a catalyst, and the hydrogen peroxide generates water and oxygen under the action of the catalyst, namely the hydrogen peroxide is used for generating oxygen gas, namely
The generated oxygen, namely the stable bubbles, is used as a skeleton structure, so that the volume weight of the material can be reduced, and about half of the use amount of the backfill material can be reduced in the same backfill construction.
The invention has the beneficial effects that: the light sand-free backfill material for ground heating backfill has high early strength, can reach about half of the designed strength after 1d of construction, simultaneously gets rid of the constraint of gravels, utilizes uniform and stable bubbles as a framework structure, greatly reduces the volume weight of the material, can reduce about half of the use amount of the backfill material in the same backfill construction, reduces the consumption of raw materials, is an energy-saving and emission-reducing backfill mode, has quite good fluidity, can be automatically leveled on the ground by mechanical pouring and slight assistance, improves the construction efficiency of ground heating backfill, can use light sand-free ground heating backfill materials with different dry densities, simultaneously serves as a heat insulation layer and a ground heating backfill layer, has good binding property with a base material and the heat insulation layer, and reduces the risk of later-stage hollow bulging cracking. The material has the advantages of light weight and multiple pores, can effectively reduce the dead weight of a high-rise building and improve the safety and stability, has good heat storage performance, can maximally ensure the utilization of floor heating heat energy, and reduces energy waste caused by heat dissipation.
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: the light sand-free backfilling material for floor heating backfilling is made up by using (by weight portion) 2.5Kg of ordinary portland cement, 1.5Kg of sulpho-aluminium cement, 0.8Kg of gypsum, 0.01Kg of polycarboxylic acid water-reducing agent, 0.01Kg of cellulose ether, 0.008Kg of PP fibre, 0.008Kg of early strength agent, 0.03Kg of manganese dioxide, 0.3Kg of hydrogen peroxide and 3Kg of water.
The light sand-free backfill material for ground heating backfill is characterized in that the PP fibers are 6mm long.
The light sand-free backfill material for ground heating backfill is characterized in that the hydrogen peroxide is 50% hydrogen peroxide.
The preparation method of the light sand-free backfill material for ground heating backfill comprises the following steps:
s1: preparing materials, namely weighing 2.5Kg of ordinary portland cement, 1.5Kg of sulphoaluminate cement, 0.8Kg of gypsum, 0.01Kg of polycarboxylic acid water reducing agent, 0.01Kg of cellulose ether, 0.008Kg of PP fiber, 0.008Kg of early strength agent, 0.03Kg of manganese dioxide, 0.3Kg of hydrogen peroxide and 3Kg of water for later use;
s2: pulping, namely putting the ordinary Portland cement, the sulphoaluminate cement, the gypsum, the polycarboxylic acid water reducing agent, the cellulose ether, the PP fiber and the early strength agent prepared in the step S1 into a mixer, adding the water prepared in the step S1, and stirring for 2min at the stirring speed of 50 revolutions per minute to prepare slurry, thus obtaining slurry;
s3: and mixing, namely adding the manganese dioxide prepared in the step S1 and hydrogen peroxide into the slurry prepared in the step S2, and continuously stirring for 2min at the stirring speed of 30 revolutions per minute to obtain a finished product.
Example 2: a light sand-free backfill material for ground heating backfill is composed of 3.5Kg of ordinary portland cement, 2.5Kg of sulpho-alumina cement, 1.3Kg of gypsum, 0.02Kg of polycarboxylic acid water reducing agent, 0.03Kg of cellulose ether, 0.013Kg of PP fiber, 0.013Kg of early strength agent, 0.05Kg of manganese dioxide, 0.5Kg of hydrogen peroxide and 4Kg of water.
The light sand-free backfill material for ground heating backfill is characterized in that the PP fibers are 6mm long.
The light sand-free backfill material for ground heating backfill is characterized in that the hydrogen peroxide is 50% hydrogen peroxide.
The preparation method of the light sand-free backfill material for ground heating backfill comprises the following steps:
s1: preparing materials, namely weighing 3.5Kg of ordinary portland cement, 2.5Kg of sulphoaluminate cement, 1.3Kg of gypsum, 0.02Kg of polycarboxylic acid water reducing agent, 0.03Kg of cellulose ether, 0.013Kg of PP fiber, 0.013Kg of early strength agent, 0.05Kg of manganese dioxide, 0.5Kg of hydrogen peroxide and 4Kg of water for later use;
s2: pulping, namely putting the ordinary Portland cement, the sulphoaluminate cement, the gypsum, the polycarboxylic acid water reducing agent, the cellulose ether, the PP fiber and the early strength agent prepared in the step S1 into a mixer, adding the water prepared in the step S1, and stirring for 2min at the stirring speed of 60 revolutions per minute to prepare slurry so as to obtain slurry;
s3: and mixing, namely adding the manganese dioxide prepared in the step S1 and hydrogen peroxide into the slurry prepared in the step S2, and continuously stirring for 2min at the stirring speed of 40 revolutions per minute to obtain a finished product.
Example 3: the light sand-free backfilling material for floor heating backfilling is prepared from 3Kg of ordinary portland cement, 2Kg of sulphoaluminate cement, 1Kg of gypsum, 0.015Kg of polycarboxylic acid water reducing agent, 0.02Kg of cellulose ether, 0.01Kg of PP fiber, 0.01Kg of early strength agent, 0.04Kg of manganese dioxide, 0.4Kg of hydrogen peroxide and 3.5Kg of water.
The light sand-free backfill material for ground heating backfill is characterized in that the PP fibers are 6mm long.
The light sand-free backfill material for ground heating backfill is characterized in that the hydrogen peroxide is 50% hydrogen peroxide.
The preparation method of the light sand-free backfill material for ground heating backfill comprises the following steps:
s1: preparing materials, namely weighing 3Kg of ordinary portland cement, 2Kg of sulphoaluminate cement, 1Kg of gypsum, 0.015Kg of polycarboxylic acid water reducing agent, 0.02Kg of cellulose ether, 0.01Kg of PP fiber, 0.01Kg of early strength agent, 0.04Kg of manganese dioxide, 0.4Kg of hydrogen peroxide and 3.5Kg of water for later use;
s2: pulping, namely putting the ordinary Portland cement, the sulphoaluminate cement, the gypsum, the polycarboxylic acid water reducing agent, the cellulose ether, the PP fiber and the early strength agent prepared in the step S1 into a mixer, adding the water prepared in the step S1, and stirring for 2min at the stirring speed of 55 revolutions per minute to prepare slurry, thus obtaining slurry;
s3: and mixing, namely adding the manganese dioxide prepared in the step S1 and hydrogen peroxide into the slurry prepared in the step S2, and continuously stirring for 2min at the stirring speed of 35 revolutions per minute to obtain a finished product.
Example 4: the light sand-free backfilling material for floor heating backfilling is made up by using 2.5Kg of ordinary portland cement, 2.5Kg of sulphoaluminate cement, 1Kg of gypsum, 0.02Kg of polycarboxylic acid water-reducing agent, 0.02Kg of cellulose ether, 0.01Kg of PP fibre, 0.011Kg of early strength agent, 0.03Kg of manganese dioxide, 0.4Kg of hydrogen peroxide and 3Kg of water.
The light sand-free backfill material for ground heating backfill is characterized in that the PP fibers are 6mm long.
The light sand-free backfill material for ground heating backfill is characterized in that the hydrogen peroxide is 50% hydrogen peroxide.
The preparation method of the light sand-free backfill material for ground heating backfill comprises the following steps:
s1: preparing materials, namely weighing 2.5Kg of ordinary portland cement, 2.5Kg of sulphoaluminate cement, 1Kg of gypsum, 0.02Kg of polycarboxylic acid water reducing agent, 0.02Kg of cellulose ether, 0.01Kg of PP fiber, 0.011Kg of early strength agent, 0.03Kg of manganese dioxide, 0.4Kg of hydrogen peroxide and 3Kg of water for later use;
s2: pulping, namely putting the ordinary portland cement, the sulphoaluminate cement, the gypsum, the polycarboxylic acid water reducer, the cellulose ether, the PP fiber and the early strength agent prepared in the step S1 into a mixer, adding the water prepared in the step S1, and stirring for 2min at the stirring speed of 53 revolutions per minute to prepare slurry, thus obtaining slurry;
s3: and mixing, namely adding the manganese dioxide prepared in the step S1 and hydrogen peroxide into the slurry prepared in the step S2, and continuously stirring for 2min at the stirring speed of 40 revolutions per minute to obtain a finished product.
Example 5: the light sand-free backfilling material for floor heating backfilling is made up by using (by weight portion) 2.8Kg of ordinary portland cement, 2.5Kg of sulphoaluminate cement, 1.2Kg of gypsum, 0.015Kg of polycarboxylic acid water-reducing agent, 0.02Kg of cellulose ether, 0.009Kg of PP fibre, 0.008Kg of early strength agent, 0.05Kg of manganese dioxide, 0.4Kg of hydrogen peroxide and 3Kg of water.
The light sand-free backfill material for ground heating backfill is characterized in that the PP fibers are 6mm long.
The light sand-free backfill material for ground heating backfill is characterized in that the hydrogen peroxide is 50% hydrogen peroxide.
The preparation method of the light sand-free backfill material for ground heating backfill comprises the following steps:
s1: preparing materials, namely weighing 2.8Kg of ordinary portland cement, 2.5Kg of sulphoaluminate cement, 1.2Kg of gypsum, 0.015Kg of polycarboxylic acid water reducing agent, 0.02Kg of cellulose ether, 0.009Kg of PP fiber, 0.008Kg of early strength agent, 0.05Kg of manganese dioxide, 0.4Kg of hydrogen peroxide and 3Kg of water for later use;
s2: pulping, namely putting the ordinary Portland cement, the sulphoaluminate cement, the gypsum, the polycarboxylic acid water reducing agent, the cellulose ether, the PP fiber and the early strength agent prepared in the step S1 into a mixer, adding the water prepared in the step S1, and stirring for 2min at the stirring speed of 60 revolutions per minute to prepare slurry so as to obtain slurry;
s3: and mixing, namely adding the manganese dioxide prepared in the step S1 and hydrogen peroxide into the slurry prepared in the step S2, and continuously stirring for 2min at the stirring speed of 37 revolutions per minute to obtain a finished product.
The backfill material prepared by the method can also be used as a heat insulation layer, namely before the ground heating pipe is laid, the light sand-free ground heating backfill material can be used for heat insulation to replace the traditional polyphenyl board as the heat insulation layer, and the material properties are as follows: dry density 400kg/m3About 0.08 (m.K) in thermal conductivity and about 0.8MPa in compressive strength. Paving on the ground by mechanical pouring, coating a layer of fireproof heat-insulating coating on the surface of the heat-insulating layer after 1d, and paving the floor heating pipeline after the surface of the heat-insulating layer is dried. After the pressure test is finished, the pressure testing device is used,the ground heating backfill is prepared, and the light sand-free backfill material prepared by the invention is backfilled at the moment, and has the following material properties: dry density 1000kg/m3About 0.14 (m.K) in thermal conductivity and about 8MPa in compressive strength. After 1d, subsequent veneers such as wood floors and ceramic tiles can be laid.
Claims (5)
1. The utility model provides a no sand backfill material of light for ground warms up backfill which characterized in that: the cement mortar is prepared from 2.5-3.5 parts of ordinary portland cement, 1.5-2.5 parts of sulphoaluminate cement, 0.8-1.3 parts of gypsum, 0.01-0.02 part of polycarboxylic acid water reducing agent, 0.01-0.03 part of cellulose ether, 0.008-0.013 part of PP fiber, 0.008-0.013 part of early strength agent, 0.03-0.05 part of manganese dioxide, 0.3-0.5 part of hydrogen peroxide and 3-4 parts of water.
2. The light sand-free backfill material for floor heating backfill according to claim 1, characterized in that: the cement mortar is composed of 3 parts of ordinary portland cement, 2 parts of sulphoaluminate cement, 1 part of gypsum, 0.015 part of polycarboxylic acid water reducing agent, 0.02 part of cellulose ether, 0.01 part of PP fiber, 0.01 part of early strength agent, 0.04 part of manganese dioxide, 0.4 part of hydrogen peroxide and 3.5 parts of water.
3. The light sand-free backfill material for floor heating backfill according to claim 2, characterized in that: the PP fiber is 6mm long.
4. The light sand-free backfill material for floor heating backfill according to claim 3, characterized in that: the hydrogen peroxide is 50% hydrogen peroxide.
5. The preparation method of the light sand-free backfill material for ground heating backfill according to claim 1, characterized by comprising the following steps of: the method comprises the following steps:
s1: preparing materials, namely weighing 2.5-3.5 parts of ordinary portland cement, 1.5-2.5 parts of sulphoaluminate cement, 0.8-1.3 parts of gypsum, 0.01-0.02 part of polycarboxylic acid water reducing agent, 0.01-0.03 part of cellulose ether, 0.008-0.013 part of PP fiber, 0.008-0.013 part of early strength agent, 0.03-0.05 part of manganese dioxide, 0.3-0.5 part of hydrogen peroxide and 3-4 parts of water for later use;
s2: pulping, namely putting the ordinary portland cement, the sulphoaluminate cement, the gypsum, the polycarboxylic acid water reducer, the cellulose ether, the PP fiber and the early strength agent prepared in the step S1 into a mixer, adding the water prepared in the step S1, stirring for 2min at the stirring speed of 50-60 rpm, and preparing slurry to obtain slurry;
s3: and mixing, namely adding the manganese dioxide prepared in the step S1 and hydrogen peroxide into the slurry prepared in the step S2, and continuously stirring for 2min at the stirring speed of 30-40 r/min to obtain a finished product.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113185255A (en) * | 2021-05-19 | 2021-07-30 | 上海三棵树防水技术有限公司 | Special cement-based self-leveling mortar for indoor floor heating and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104130006A (en) * | 2014-08-04 | 2014-11-05 | 马鞍山十七冶工程科技有限责任公司 | Straw fiber reinforced foam concrete and preparation method thereof |
| CN106007504A (en) * | 2016-05-20 | 2016-10-12 | 广西科技大学 | Light micropore energy-saving and environment-friendly concrete block and preparation method thereof |
| CN107324735A (en) * | 2017-07-13 | 2017-11-07 | 重庆大学 | A kind of ultralight foam concrete and preparation method thereof |
| CN109516755A (en) * | 2018-12-27 | 2019-03-26 | 河南强耐新材股份有限公司 | A kind of dedicated gypsum based self-leveling mortar of floor heating backfill |
-
2020
- 2020-02-27 CN CN202010122523.9A patent/CN111217579A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104130006A (en) * | 2014-08-04 | 2014-11-05 | 马鞍山十七冶工程科技有限责任公司 | Straw fiber reinforced foam concrete and preparation method thereof |
| CN106007504A (en) * | 2016-05-20 | 2016-10-12 | 广西科技大学 | Light micropore energy-saving and environment-friendly concrete block and preparation method thereof |
| CN107324735A (en) * | 2017-07-13 | 2017-11-07 | 重庆大学 | A kind of ultralight foam concrete and preparation method thereof |
| CN109516755A (en) * | 2018-12-27 | 2019-03-26 | 河南强耐新材股份有限公司 | A kind of dedicated gypsum based self-leveling mortar of floor heating backfill |
Non-Patent Citations (2)
| Title |
|---|
| 李应权等: "《泡沫混凝土的研究与应用》", 31 December 2018, 中国建材工业出版社 * |
| 李晓生等: "泡沫混凝土的制备与性能研究", 《试验研究》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113185255A (en) * | 2021-05-19 | 2021-07-30 | 上海三棵树防水技术有限公司 | Special cement-based self-leveling mortar for indoor floor heating and preparation method thereof |
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