CN114105560A - Dry-mixed bonding mortar prepared from coal gangue and fly ash and preparation method thereof - Google Patents
Dry-mixed bonding mortar prepared from coal gangue and fly ash and preparation method thereof Download PDFInfo
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- CN114105560A CN114105560A CN202111408034.0A CN202111408034A CN114105560A CN 114105560 A CN114105560 A CN 114105560A CN 202111408034 A CN202111408034 A CN 202111408034A CN 114105560 A CN114105560 A CN 114105560A
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- coal gangue
- aggregate
- fly ash
- dry
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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
- 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
- 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
- C04B18/12—Waste materials; Refuse from quarries, mining 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
- 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
- C04B2111/00637—Uses not provided for elsewhere in C04B2111/00 as glue or binder for uniting building or structural materials
-
- 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 technical field of building materials, in particular to dry-mixed bonding mortar prepared from coal gangue and fly ash and a preparation method thereof. The dry-mixed bonding mortar prepared from the coal gangue and the fly ash is prepared by mixing coal gangue aggregate, stone powder, ordinary portland cement, slaked lime, fly ash, redispersible latex powder, cellulose and starch ether. The invention not only makes full use of the physical characteristics of coal-based solid wastes such as coal gangue, fly ash and the like to realize the resource utilization of the coal-based solid wastes, but also the prepared dry-mixed bonding mortar meets the national standard, has the characteristics of high compressive strength, high bonding strength and the like, and has important economic benefit and environmental benefit.
Description
Technical Field
The invention relates to the technical field of building materials, in particular to dry-mixed bonding mortar prepared from coal gangue and fly ash and a preparation method thereof.
Background
The coal gangue is solid waste discharged in the coal mining process and the coal washing process, and is a black and gray rock which has lower carbon content and is harder than coal and is associated with a coal bed in the coal forming process. As a byproduct of coal mining and selecting, the calorific value of coal gangue is low, and the yield accounts for about 10-15% of the coal yield. The coal gangue is one of the most discharged industrial solid wastes in China, and the accumulated accumulation amount reaches more than 60 hundred million tons. The accumulation of the coal gangue not only occupies land and pollutes air, but also part of the coal gangue can generate spontaneous combustion phenomenon, and a large amount of toxic and harmful gas is generated in the spontaneous combustion process, so that the harm of acid rain and the like is further caused, and extremely bad influence is caused on the ecological environment. At present, the coal gangue is mainly applied to brick making, cement admixture, concrete aggregate and the like, and for some resource utilization processes, such as extraction of alumina, preparation of polyaluminium chloride water purifying agent and the like, large-scale popularization and application are not yet realized due to the preparation cost, market and other reasons, so a new method for high-value and large-scale consumption and utilization of the coal gangue is urgently needed to be provided.
The dry-mixed bonding mortar is prepared by specialized manufacturers, is used for bonding various building materials in construction engineering, and is mainly used for bonding polystyrene boards, ceramic boards, rock wool boards, extruded sheets, suspended ceilings and the like. The existing bonding mortar has the main aggregate raw material of machine-made sand which is prepared by processing river sand or limestone through equipment, the collection of the river sand easily causes ecological problems such as river bed collapse and the like, at present, China gradually limits the exploitation, the exploitation of limestone ore also faces the ecological and geological problems, and the formed goaf needs further landfill, repair and the like, so that a substitute of the traditional mortar aggregate is searched, and the method has important significance for reducing the cost of mortar preparation and expanding the market application.
In the research of preparing mortar by using coal gangue, patent 201410296278.8 discloses a method for preparing cement mortar by using coal gangue, on one hand, the added value of the conventional cement mortar is low, and a large amount of machine-made sand is still used as aggregate, so that the cost is increased, and the pressure performance is limited. Patent 201210341793.4 discloses a method for preparing ready-mixed mortar from coal gangue, wherein the synthesized mortar has strong strength performance, but still uses a large amount of standard quartz sand, so that the usage amount of coal gangue is limited.
Disclosure of Invention
In order to overcome the problems in the preparation process of the mortar, the dry-mixed bonding mortar prepared from coal gangue and fly ash and the preparation method thereof are provided.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides dry-mixed bonding mortar prepared from coal gangue and fly ash, which comprises the following components in parts by weight: 53.7-74.7 parts of coal gangue aggregate, 3.7-4.7 parts of stone powder, 25-35 parts of ordinary portland cement, 1-5 parts of slaked lime, 3-3.5 parts of fly ash, 0.5-3 parts of redispersible latex powder, 0.2-0.6 part of cellulose and 0.01-0.05 part of starch ether.
Preferably, the coal gangue aggregate comprises a first aggregate and a second aggregate, wherein the particle size of the first aggregate is smaller than or equal to 40 meshes and larger than 70 meshes, and the particle size of the second aggregate is smaller than or equal to 70 meshes and larger than or equal to 140 meshes.
Preferably, the mass ratio of the aggregate I to the aggregate II is 1: 0.8-1.3.
Preferably, the particle size of the coal gangue powder is smaller than 140 meshes.
Preferably, the carbon content of the coal gangue aggregate and the carbon content of the stone powder are independent and are less than or equal to 6 percent.
Preferably, the ordinary portland cement is 325 or 425 in type.
Preferably, the cellulose is one or more of hydroxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose and hydroxypropyl methyl cellulose.
The invention also provides a preparation method of the dry-mixed bonding mortar, which comprises the following steps:
mixing the coal gangue aggregate, the stone powder, the ordinary portland cement, the slaked lime, the fly ash, the redispersible latex powder, the cellulose and the starch ether to obtain the dry-mixed bonding mortar prepared from the coal gangue and the fly ash.
Compared with the prior art, the technical scheme of the invention has the following beneficial effects:
(1) according to the invention, bulk industrial solid waste coal gangue is used as mortar aggregate to replace river sand and limestone machine-made sand which gradually limit exploitation, so that the usage amount and exploitation steps of primary minerals are reduced, the preparation cost of mortar is reduced, solid waste is changed into valuable, and the mortar aggregate has important environmental protection significance;
(2) the special kaolinite structure in the coal gangue is fully utilized, the physical characteristics of mortar aggregate are enhanced, the compression resistance of finished mortar is improved, and the cement gelling property is enhanced by adopting the fly ash, so that the tensile resistance of the finished mortar is improved;
(3) compared with the conventional plastering mortar, the mortar has higher and stronger tensile bonding strength, high added value and good economical efficiency;
(4) the invention not only has better economic benefit, but also can solve various environmental problems caused by stacking the coal gangue, and has important ecological environmental benefit.
Drawings
FIG. 1 is a process flow diagram of example 1 of the present invention.
Detailed Description
The invention provides dry-mixed bonding mortar prepared from coal gangue and fly ash, which comprises the following components in parts by weight: 53.7-74.7 parts of coal gangue aggregate, 25-35 parts of ordinary portland cement, 1-5 parts of slaked lime, 3-3.5 parts of fly ash, 0.5-3 parts of redispersible latex powder, 0.2-0.6 part of cellulose and 0.01-0.05 part of starch ether.
In the invention, the coal gangue aggregate comprises an aggregate I and an aggregate II, wherein the particle size of the aggregate I is less than or equal to 40 meshes and more than 70 meshes, preferably less than or equal to 50 meshes and more than 60 meshes; the second aggregate has a particle size of 70 mesh or less and 140 mesh or more, preferably 80 mesh or less and 110 mesh or more.
In the invention, the mass ratio of the first aggregate to the second aggregate is preferably 1: 0.8-1.3, and more preferably 1: 0.9-1.1.
In the invention, the carbon content of the coal gangue aggregate and the carbon content of the stone powder are respectively independent and preferably less than or equal to 6 percent, and further preferably less than or equal to 5 percent.
In the present invention, the portland cement is preferably 325 or 425 in type, and more preferably 325 type.
In the present invention, the cellulose is preferably one or more of hydroxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose and hydroxypropyl methyl cellulose, and more preferably one or more of hydroxymethyl cellulose, hydroxyethyl cellulose and hydroxypropyl cellulose.
In the present invention, when the cellulose is preferably a plurality of kinds of hydroxymethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose and hydroxypropylmethylcellulose, each cellulose is preferably mixed in an equal mass ratio.
The invention also provides a preparation method of the dry-mixed bonding mortar, which comprises the following steps:
mixing the coal gangue aggregate, the stone powder, the ordinary portland cement, the slaked lime, the fly ash, the redispersible latex powder, the cellulose and the starch ether to obtain the dry-mixed bonding mortar prepared from the coal gangue and the fly ash.
The technical solutions provided by the present invention are described in detail below with reference to examples, but they should not be construed as limiting the scope of the present invention.
Example 1
Crushing the coal gangue by using an impact crusher, and screening and grading by using square-hole screens of 40 meshes, 70 meshes and 140 meshes, wherein the particle size of the first aggregate is less than or equal to 40 meshes and larger than 70 meshes, the particle size of the second aggregate is less than or equal to 70 meshes and larger than or equal to 140 meshes, and the particle size below 140 meshes is stone powder. Mixing the aggregate I, the aggregate II, ordinary portland cement, slaked lime, fly ash, stone powder, redispersible latex powder, cellulose and starch ether according to the parts by weight in the table 1 respectively.
Table 1 example 1 parts by weight of each material added
The measurement of each property was carried out according to JGJ/T70-2009 Standard test method for basic Performance of building mortar, and the results are shown in Table 2.
Table 2 example 1 mortar performance test results
Example 2
Crushing the coal gangue by using an impact crusher, and screening and grading by using square-hole screens of 40 meshes, 70 meshes and 140 meshes, wherein the particle size of the first aggregate is less than or equal to 40 meshes and larger than 70 meshes, the particle size of the second aggregate is less than or equal to 70 meshes and larger than or equal to 140 meshes, and the particle size below 140 meshes is stone powder. The aggregate I, the aggregate II, the ordinary portland cement, the slaked lime, the fly ash, the stone powder, the redispersible latex powder, the cellulose and the starch ether are respectively mixed according to the parts by weight in the table 3.
Table 3 example 2 materials addition parts by weight
The measurement of each property was carried out according to JGJ/T70-2009 Standard test method for basic Performance of building mortar, and the results are shown in Table 4.
Table 4 example 2 mortar performance test results
Example 3
Crushing the coal gangue by using an impact crusher, and screening and grading by using square-hole screens of 40 meshes, 70 meshes and 140 meshes, wherein the particle size of the first aggregate is less than or equal to 40 meshes and larger than 70 meshes, the particle size of the second aggregate is less than or equal to 70 meshes and larger than or equal to 140 meshes, and the particle size below 140 meshes is stone powder. The aggregate I, the aggregate II, the ordinary portland cement, the slaked lime, the fly ash, the stone powder, the redispersible latex powder, the cellulose and the starch ether are respectively mixed according to the parts by weight in the table 5.
Table 5 example 3 parts by weight of each material added
The measurement of each property was carried out according to JGJ/T70-2009 Standard test method for basic Performance of building mortar, and the results are shown in Table 2.
TABLE 6 example 3 materials addition parts by weight
Example 4
The coal gangue and the oversize material of the 40-mesh vibrating screen in the example 1 are mixed, crushed by an impact crusher, and then screened and classified by using 40-mesh, 70-mesh and 140-mesh square-hole screens, wherein the particle size of the first aggregate is less than or equal to 40 meshes and greater than 70 meshes, the particle size of the second aggregate is less than or equal to 70 meshes and greater than or equal to 140 meshes, and the aggregate below 140 meshes is stone powder. The aggregate I, the aggregate II, the ordinary portland cement, the slaked lime, the fly ash, the stone powder, the redispersible latex powder, the cellulose and the starch ether are respectively mixed according to the parts by weight in the table 7.
Table 7 example 4 materials addition parts by weight
The measurement of each property was carried out according to JGJ/T70-2009 Standard test method for basic Performance of building mortar, and the results are shown in Table 2.
Table 8 example 4 mortar performance test results
Example 5
Crushing the coal gangue by using an impact crusher, and screening and grading by using square-hole screens of 40 meshes, 70 meshes and 140 meshes, wherein the particle size of the first aggregate is less than or equal to 40 meshes and larger than 70 meshes, the particle size of the second aggregate is less than or equal to 70 meshes and larger than or equal to 140 meshes, and the particle size below 140 meshes is stone powder. The aggregate I, the aggregate II, the ordinary portland cement, the slaked lime, the fly ash, the stone powder, the redispersible latex powder, the cellulose and the starch ether are respectively mixed according to the parts by weight in the table 9.
TABLE 9 example 5 materials addition parts by weight
Each performance was measured according to JGJ/T70-2009 Standard test method for basic Performance of building mortar, and the results are shown in Table 10.
Table 10 example 5 mortar performance test results
The embodiment can show that the method for preparing the dry-mixed bonding mortar by using the coal gangue and the fly ash as raw materials has large using amount of the coal gangue, fully utilizes the high-strength physical property of the kaolinite component in the coal gangue, and simultaneously utilizes the fly ash to assist the cement to strengthen the gelatinization property of the mortar, so that the strength, consistency, water retention, setting time and the like of the prepared mortar meet the standard requirements of the building industry, and the prepared mortar has strong tensile bonding strength and can meet the requirements of bonding construction engineering such as insulating bricks, ceramic bricks and the like.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (8)
1. The dry-mixed bonding mortar prepared from coal gangue and fly ash is characterized by comprising the following components in parts by weight: 50-70 parts of coal gangue aggregate, 3.7-4.7 parts of mountain flour, 25-35 parts of ordinary portland cement, 1-5 parts of slaked lime, 3-3.5 parts of fly ash, 0.5-3 parts of redispersible latex powder, 0.2-0.6 part of cellulose and 0.01-0.05 part of starch ether.
2. The dry-mixed bonding mortar prepared from the coal gangue and the fly ash as claimed in claim 1, wherein the coal gangue aggregate comprises a first aggregate and a second aggregate, the particle size of the first aggregate is not more than 40 meshes and not more than 70 meshes, and the particle size of the second aggregate is not more than 70 meshes and not more than 140 meshes.
3. The dry-mixed bonding mortar prepared from the coal gangue and the fly ash as claimed in claim 2, wherein the mass ratio of the first aggregate to the second aggregate is 1: 0.8-1.3.
4. The dry-mixed bonding mortar prepared from the coal gangue and the fly ash as claimed in any one of claims 1 to 3, wherein the particle size of the stone powder is less than 140 meshes.
5. The dry-mixed bonding mortar prepared from the coal gangue and the fly ash as claimed in claim 4, wherein the carbon content of the coal gangue aggregate and the carbon content of the stone powder are independently less than or equal to 6%.
6. The dry-mixed bonding mortar prepared from the coal gangue and the fly ash as claimed in claim 1 or 5, wherein the ordinary portland cement is 325 or 425 in type.
7. The dry-mixed bonding mortar prepared from the coal gangue and the fly ash as claimed in claim 6, wherein the cellulose is one or more of hydroxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose and hydroxypropyl methyl cellulose.
8. A method for preparing the dry-mixed bonding mortar of any one of claims 1 to 7, comprising the steps of:
mixing the coal gangue aggregate, the stone powder, the ordinary portland cement, the slaked lime, the fly ash, the redispersible latex powder, the cellulose and the starch ether to obtain the dry-mixed bonding mortar prepared from the coal gangue and the fly ash.
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1051720A (en) * | 1989-11-16 | 1991-05-29 | 李敏 | Natural gangue mortar |
| CN101575192A (en) * | 2009-06-03 | 2009-11-11 | 朝阳华龙科建股份有限公司 | Coal gangue cement mortar |
| CN102815909A (en) * | 2012-09-17 | 2012-12-12 | 河南城建学院 | Gangue ready mixed mortar and preparation method thereof |
| CN103880312A (en) * | 2014-02-17 | 2014-06-25 | 李荣怀 | Light-weight aggregate produced by using coal gangue |
| CN105294003A (en) * | 2014-06-27 | 2016-02-03 | 贵州中建建筑科研设计院有限公司 | Method for preparing cement mortar with gangue particles |
| CN105859221A (en) * | 2016-04-18 | 2016-08-17 | 浙江正裕科技股份有限公司 | Dry-blended plastering mortar |
| CN106977151A (en) * | 2017-05-22 | 2017-07-25 | 山西大学 | A kind of solid waste light-weight aggregate dry-mixed mortar and preparation method thereof |
| KR101766316B1 (en) * | 2016-10-19 | 2017-08-08 | 화인미셀공업(주) | Nonflammability corting mortar and method using them thereof |
| CN112960954A (en) * | 2021-03-05 | 2021-06-15 | 安徽建筑大学 | High-strength low-drying-shrinkage all-coal gangue aggregate cement mortar and preparation method thereof |
-
2021
- 2021-11-24 CN CN202111408034.0A patent/CN114105560A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1051720A (en) * | 1989-11-16 | 1991-05-29 | 李敏 | Natural gangue mortar |
| CN101575192A (en) * | 2009-06-03 | 2009-11-11 | 朝阳华龙科建股份有限公司 | Coal gangue cement mortar |
| CN102815909A (en) * | 2012-09-17 | 2012-12-12 | 河南城建学院 | Gangue ready mixed mortar and preparation method thereof |
| CN103880312A (en) * | 2014-02-17 | 2014-06-25 | 李荣怀 | Light-weight aggregate produced by using coal gangue |
| CN105294003A (en) * | 2014-06-27 | 2016-02-03 | 贵州中建建筑科研设计院有限公司 | Method for preparing cement mortar with gangue particles |
| CN105859221A (en) * | 2016-04-18 | 2016-08-17 | 浙江正裕科技股份有限公司 | Dry-blended plastering mortar |
| KR101766316B1 (en) * | 2016-10-19 | 2017-08-08 | 화인미셀공업(주) | Nonflammability corting mortar and method using them thereof |
| CN106977151A (en) * | 2017-05-22 | 2017-07-25 | 山西大学 | A kind of solid waste light-weight aggregate dry-mixed mortar and preparation method thereof |
| CN112960954A (en) * | 2021-03-05 | 2021-06-15 | 安徽建筑大学 | High-strength low-drying-shrinkage all-coal gangue aggregate cement mortar and preparation method thereof |
Non-Patent Citations (4)
| Title |
|---|
| 朱愿愿等: "煅烧煤矸石细骨料特性及其对砂浆性能的提升作用", 《煤炭学报》 * |
| 沈春林: "《预拌砂浆的生产与施工》", 31 August 2015, 中国建材工业出版社 * |
| 王悦汉等: "《巷道支架壁后充填技术》", 31 August 1995, 煤炭工业出版社 * |
| 王霞等: "新型粉煤灰用于干混粘结砂浆的试验研究", 《新型建筑材料》 * |
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