CN112094081B - Mortar and preparation method thereof - Google Patents
Mortar and preparation method thereof Download PDFInfo
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- CN112094081B CN112094081B CN202010986671.5A CN202010986671A CN112094081B CN 112094081 B CN112094081 B CN 112094081B CN 202010986671 A CN202010986671 A CN 202010986671A CN 112094081 B CN112094081 B CN 112094081B
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- slag powder
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- 239000004570 mortar (masonry) Substances 0.000 title claims abstract description 91
- 238000002360 preparation method Methods 0.000 title claims description 15
- 239000002893 slag Substances 0.000 claims abstract description 123
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 105
- 239000010959 steel Substances 0.000 claims abstract description 105
- 239000000843 powder Substances 0.000 claims abstract description 102
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 54
- 239000002245 particle Substances 0.000 claims abstract description 33
- 239000004568 cement Substances 0.000 claims abstract description 29
- 239000002994 raw material Substances 0.000 claims abstract description 17
- 239000010440 gypsum Substances 0.000 claims description 26
- 229910052602 gypsum Inorganic materials 0.000 claims description 26
- 239000002699 waste material Substances 0.000 claims description 23
- 239000000463 material Substances 0.000 claims description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- 239000003513 alkali Substances 0.000 claims description 18
- 238000000227 grinding Methods 0.000 claims description 16
- 239000000654 additive Substances 0.000 claims description 13
- 230000000996 additive effect Effects 0.000 claims description 13
- 239000001913 cellulose Substances 0.000 claims description 10
- 229920002678 cellulose Polymers 0.000 claims description 10
- 238000007873 sieving Methods 0.000 claims description 6
- 239000012744 reinforcing agent Substances 0.000 claims description 5
- 239000002910 solid waste Substances 0.000 abstract description 10
- 238000007710 freezing Methods 0.000 abstract description 5
- 230000008014 freezing Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 235000013339 cereals Nutrition 0.000 description 10
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 9
- 235000011941 Tilia x europaea Nutrition 0.000 description 9
- 239000004571 lime Substances 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 8
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Inorganic materials [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 5
- 238000005336 cracking Methods 0.000 description 5
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- 239000004927 clay Substances 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 244000025254 Cannabis sativa Species 0.000 description 2
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 description 2
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 description 2
- 239000004566 building material Substances 0.000 description 2
- 235000009120 camo Nutrition 0.000 description 2
- 235000005607 chanvre indien Nutrition 0.000 description 2
- 230000032798 delamination Effects 0.000 description 2
- 239000011487 hemp Substances 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- 235000017550 sodium carbonate Nutrition 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 239000010902 straw Substances 0.000 description 2
- 235000019738 Limestone Nutrition 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- 238000009621 Solvay process Methods 0.000 description 1
- 241000209140 Triticum Species 0.000 description 1
- 235000021307 Triticum Nutrition 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000003674 animal food additive Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 239000011469 building brick Substances 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- ZOMBKNNSYQHRCA-UHFFFAOYSA-J calcium sulfate hemihydrate Chemical compound O.[Ca+2].[Ca+2].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O ZOMBKNNSYQHRCA-UHFFFAOYSA-J 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- -1 etc.) Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 235000019580 granularity Nutrition 0.000 description 1
- 239000011426 gypsum mortar Substances 0.000 description 1
- 239000011507 gypsum plaster Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 1
- 239000011431 lime mortar Substances 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 description 1
- 239000011505 plaster Substances 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
-
- 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
-
- 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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
-
- 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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/10—Accelerators; Activators
- C04B2103/12—Set accelerators
-
- 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
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/29—Frost-thaw resistance
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Civil Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention provides mortar, which takes industrial solid waste steel slag powder with different particle sizes and an aggregate forming agent consisting of industrial solid waste as main raw materials, wherein the steel slag with the particle size of about 1mm can play a skeleton role, so that the strength of the mortar is improved, the heat resistance of the mortar is improved, the mortar is ensured to have higher strength in the use process, various stress effects can be borne, and cracks are avoided; the steel slag with the grain size of 150 mu m can be filled in the gaps of the steel slag with the grain size of 1mm, so that the density of the mortar is increased, and the strength of the mortar is further enhanced; the steel slag with the grain size of 100 mu m improves the uniform stability of the mortar. The mortar provided by the invention does not contain cement, the dependence of the mortar on the cement is reduced, the burden of industrial solid waste on the environment is solved, and the obtained mortar has the characteristics of uniformity and stability, small layering degree, high bonding strength, excellent freezing resistance and low shrinkage value.
Description
Technical Field
The invention belongs to the technical field of building materials, and particularly relates to mortar and a preparation method thereof.
Background
The mortar is a bonding substance used for building bricks on buildings and is prepared by adding water into sand and cementing materials such as cement, lime paste, clay and the like according to a certain proportion. Common mortars are cement mortar, mixed mortar, lime mortar and clay mortar. The mortar is used for masonry and plastering engineering and can be divided into masonry mortar and plastering mortar, wherein the masonry mortar is used for masonry of bricks, stones, building blocks and the like and installation of members; the latter is used for plastering the surfaces of wall surfaces, ground surfaces, roof surfaces, beam-column structures and the like so as to meet the requirements of protection, decoration and the like. In the common mortar material, gypsum, lime paste or clay is mixed with fibrous reinforcing material and water to prepare paste, which is called as ash, paste, mud or cement gum. Common examples include hemp cut lime (lime paste mixed with hemp cut), paper fiber lime (lime paste mixed with paper fiber), gypsum lime (lime paste mixed with plaster of paris, paper fiber or glass fiber, etc.), and plaster (clay mixed with a small amount of lime and wheat straw or rice straw). In the prior art, the mortar is prepared by taking cement as a cementing material, the strength of the mortar is mainly determined by cement grade and cement dosage, and the over-high grade of the cement causes poor water retention due to insufficient cement dosage, so that the mortar has strong dependence on the cement.
Disclosure of Invention
In order to solve the technical problems, the invention provides mortar which takes industrial solid wastes as main raw materials, does not use cement and has good service performance, and a preparation method thereof.
The invention aims to provide a mortar without cement.
The invention also aims to provide a preparation method of the mortar.
The mortar provided by the invention is prepared from the following raw materials in parts by weight:
8-10 parts of steel slag powder, 2-5 parts of aggregate forming agent and 1.5-6 parts of water.
Preferably, the feed additive is prepared from the following raw materials in parts by weight:
10 parts of steel slag powder, 3 parts of aggregate forming agent and 2 parts of water.
Preferably, the particle size of the steel slag powder is 100-1000 μm.
Preferably, the steel slag powder comprises 3 parts of steel slag powder with the particle size of 1mm, 2 parts of steel slag powder with the particle size of 150 microns and 1 part of steel slag powder with the particle size of 100 microns in parts by weight.
Preferably, the aggregate forming agent comprises the following components in parts by weight:
15-25 parts of alkaline residue,
35-45 parts of steel slag,
3-6 parts of a waste gypsum mould,
30-35 parts of a cementing material,
0-1.5 parts of additive.
Preferably, the cementitious material is cement clinker. The cement clinker is used as the cementing material mud, and the main components of the cement clinker are calcium oxide, silicon dioxide, aluminum oxide, ferric oxide and the like.
Preferably, the additive is a reinforcing agent or a grinding aid. Both reinforcing agents and grinding aids are commercially available.
The alkaline residue adopted by the invention is obtained by centrifugally dewatering white solid waste generated by producing soda ash by an ammonia-soda process.
The mortar provided by the invention takes the steel slag and the aggregate forming agent as main raw materials, does not contain cement, solves the problem of the dependence of the mortar on the cement, has excellent performances and meets the requirements of national standards on the mortar. According to the invention, the steel slag powder is obtained by mixing the steel slag with different granularities, the steel slag with the grain size of about 1mm can play a skeleton role, the strength of the mortar is improved, the heat resistance of the mortar is improved, the mortar has higher strength in the use process, various stress effects can be borne, and the generation of cracks is avoided; the steel slag with the grain diameter of 150 mu m can be filled in the gap of the steel slag with the grain diameter of 1mm, so that the density of the mortar is increased, and the strength of the mortar is further enhanced; the steel slag with the grain size of 100 mu m improves the uniform stability of the mortar, and the steel slag powder obtained from the steel slag with different grain sizes interacts with the aggregate forming agent, so that the obtained mortar is uniform and stable, small in layering degree, high in bonding strength, excellent in anti-freezing performance and low in shrinkage value.
The mortar provided by the invention preferably further comprises 3-5 parts of cellulose and 0.04-1.5 parts of an accelerator according to parts by weight. The mortar provided by the invention can be added with cellulose and an accelerator to improve the solidification speed, and is used for outer wall crack resistance. The cellulose and the accelerating agent adopted by the invention are commercially available. The accelerator in the invention is specifically an accelerator which takes alumina, soda ash and limestone as raw materials. The accelerator generates sodium hydroxide, sodium sulfate is generated by the accelerator and the gypsum, the concentration of calcium sulfate in the slurry is reduced, the delayed coagulation of the calcium sulfate is reduced, and the solidification of the mortar is promoted.
The preparation method of the mortar provided by the invention comprises the following steps:
(1) taking steel slag, grinding and sorting to obtain steel slag powder;
(2) preparing an aggregate forming agent: respectively taking the alkali slag, the steel slag, the waste gypsum mold and the cementing material, crushing, grinding and sieving to obtain alkali slag powder, steel slag powder, waste gypsum mold powder and cementing powder, and then uniformly mixing the alkali slag powder, the steel slag powder, the waste gypsum mold powder, the cementing powder and the additive to obtain an aggregate forming agent;
(3) and (3) mixing the steel slag powder obtained in the step (1) with the aggregate forming agent obtained in the step (2), then adding water, and uniformly mixing to obtain the mortar.
Preferably, in the step (2), the particle size of the aggregate forming agent is 40-80 μm.
The preparation method of the mortar provided by the invention is simple, convenient to operate, convenient for industrial production and wide in application prospect.
The invention has the beneficial effects that:
1. the mortar provided by the invention takes the industrial solid waste steel slag powder and the aggregate forming agent consisting of the industrial solid waste as main raw materials, the obtained mortar does not contain cement, the burden of the industrial solid waste on the environment is solved, and the obtained mortar has the characteristics of uniformity and stability, small layering degree, high bonding strength, excellent freezing resistance and low shrinkage value.
2. The mortar provided by the invention has the combined action of the steel slag powder with different particle sizes and the aggregate forming agent, and the steel slag with the particle size of about 1mm can play a skeleton role, so that the strength of the mortar is improved, the heat resistance of the mortar is improved, the mortar is ensured to have higher strength in the use process, various stress effects can be borne, and cracks are avoided; the steel slag with the grain diameter of 150 mu m can be filled in the gap of the steel slag with the grain diameter of 1mm, so that the density of the mortar is increased, and the strength of the mortar is further enhanced; the steel slag with the grain diameter of 100 mu m improves the uniform stability of the mortar. The steel slag powder obtained from the steel slag with different grain diameters interacts with the aggregate forming agent, so that the obtained mortar has excellent performance, and meets various national standard requirements on the premise of not using cement.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
In the present invention, 1 part by weight is 1 kg. The grinding aid and the reinforcing agent adopted by the invention are from Tianjin building materials science research institute.
Example 1
The masonry mortar comprises the following raw materials in parts by weight:
8 parts of steel slag powder, 2 parts of aggregate forming agent and 1.5 parts of water;
the steel slag powder comprises 4 parts of steel slag powder with the particle size of 1mm, 2.67 parts of steel slag powder with the particle size of 150 mu m and 1.33 parts of steel slag powder with the particle size of 100 mu m in parts by weight;
the aggregate forming agent comprises the following components in parts by weight:
15 parts of alkaline residues, namely, 15 parts of alkaline residues,
35 parts of steel slag, namely, a steel slag,
3 parts of a waste gypsum mould, namely,
30 parts of cement clinker.
The preparation method of the masonry mortar comprises the following steps:
(1) taking steel slag, grinding and sorting to obtain steel slag powder;
(2) preparing an aggregate forming agent: respectively taking the alkali slag, the steel slag, the waste gypsum mold and the cementing material, crushing, grinding and sieving to obtain alkali slag powder, steel slag powder, waste gypsum mold powder and cementing powder, and then uniformly mixing the alkali slag powder, the steel slag powder, the waste gypsum mold powder and cement clinker to obtain an aggregate forming agent, wherein the particle size of the aggregate forming agent is 40-80 mu m;
(3) and (3) mixing the steel slag powder obtained in the step (1) with the aggregate forming agent obtained in the step (2), then adding water, and uniformly mixing to obtain the masonry mortar.
Example 2
The masonry mortar comprises the following raw materials in parts by weight:
10 parts of steel slag powder, 5 parts of aggregate forming agent and 6 parts of water;
the steel slag powder comprises 5 parts of steel slag powder with the particle size of 1mm, 3.33 parts of steel slag powder with the particle size of 150 mu m and 1.67 parts of steel slag powder with the particle size of 100 mu m in parts by weight;
the aggregate forming agent comprises the following components in parts by weight:
25 parts of alkaline residue, namely 25 parts of alkaline residue,
45 parts of steel slag, namely, 45 parts of steel slag,
6 parts of a waste gypsum mould, namely,
35 parts of a cementing material, namely a cement,
1.5 parts of an additive;
the cementing material is clinker cement,
the additive is a reinforcing agent.
The preparation method of the masonry mortar comprises the following steps:
(1) taking steel slag, grinding and sorting to obtain steel slag powder;
(2) preparing an aggregate forming agent: respectively taking alkali slag, steel slag, waste gypsum mold and a cementing material, crushing, grinding and sieving to obtain alkali slag powder, steel slag powder, waste gypsum mold powder and cementing powder, and then uniformly mixing the alkali slag powder, the steel slag powder, the waste gypsum mold powder, the cementing material and an additive to obtain an aggregate forming agent, wherein the particle size of the aggregate forming agent is 40-80 mu m;
(3) and (3) mixing the steel slag powder obtained in the step (1) with the aggregate forming agent obtained in the step (2), then adding water, and uniformly mixing to obtain the masonry mortar.
Example 3
The masonry mortar comprises the following raw materials in parts by weight:
10 parts of steel slag powder, 3 parts of aggregate forming agent and 2 parts of water;
the steel slag powder comprises 5 parts of steel slag powder with the particle size of 1mm, 3.33 parts of steel slag powder with the particle size of 150 mu m and 1.67 parts of steel slag powder with the particle size of 100 mu m in parts by weight;
the aggregate forming agent comprises the following components in parts by weight:
20 parts of alkaline residues, namely 20 parts of alkaline residues,
40 parts of steel slag, namely 40 parts of steel slag,
5 parts of a waste gypsum mould, namely,
34 parts of a cementing material, namely,
1 part of an additive;
the cementing material is cement clinker;
the additive is a grinding aid.
The preparation method of the masonry mortar comprises the following steps:
(1) taking steel slag, grinding and sorting to obtain steel slag powder;
(2) preparing an aggregate forming agent: respectively taking alkali slag, steel slag, waste gypsum mold and a cementing material, crushing, grinding and sieving to obtain alkali slag powder, steel slag powder, waste gypsum mold powder and cementing powder, and then uniformly mixing the alkali slag powder, the steel slag powder, the waste gypsum mold powder, the cementing material and an additive to obtain an aggregate forming agent, wherein the particle size of the aggregate forming agent is 40-80 mu m;
(3) and (3) mixing the steel slag powder obtained in the step (1) with the aggregate forming agent obtained in the step (2), then adding water, and uniformly mixing to obtain the masonry mortar.
Example 4
The outer wall anti-cracking mortar comprises the following raw materials in parts by weight:
8 parts of steel slag powder, 2 parts of aggregate forming agent, 3 parts of cellulose, 0.04 part of accelerator and 2 parts of water;
the steel slag powder comprises 4 parts of steel slag powder with the particle size of 1mm, 2.67 parts of steel slag powder with the particle size of 150 mu m and 1.33 parts of steel slag powder with the particle size of 100 mu m in parts by weight;
the aggregate forming agent was the same as in example 1.
The preparation method of the external wall anti-cracking mortar is the same as the embodiment 1, except that the step (3) is as follows: and (3) mixing the steel slag powder obtained in the step (1) with the aggregate forming agent obtained in the step (2), cellulose and an accelerating agent, then adding water, and uniformly mixing to obtain the outer wall anti-cracking mortar.
Example 5
The anti-crack mortar for the outer wall comprises the following raw materials in parts by weight:
10 parts of steel slag powder, 5 parts of aggregate forming agent, 5 parts of cellulose, 1.5 parts of accelerator and 2 parts of water;
the steel slag powder comprises 5 parts of steel slag powder with the particle size of 1mm, 3.33 parts of steel slag powder with the particle size of 150 mu m and 1.67 parts of steel slag powder with the particle size of 100 mu m in parts by weight;
the aggregate forming agent was the same as in example 3.
The preparation method of the external wall anti-cracking mortar is the same as that of the embodiment 4.
Comparative example 1
The masonry mortar comprises the following raw materials in parts by weight:
10 parts of steel slag powder, 3 parts of aggregate forming agent and 2 parts of water;
the grain size of the steel slag powder is 1-2 mm; the aggregate forming agent was the same as in example 3. The preparation method of the masonry mortar is the same as that of example 3.
Comparative example 2
Masonry mortar is commercially available.
Comparative example 3
The anti-crack mortar for the outer wall comprises the following raw materials in parts by weight:
10 parts of cement, 5 parts of aggregate forming agent, 5 parts of cellulose, 1.5 parts of accelerator and 2 parts of water;
the preparation method of the masonry mortar comprises the following steps:
(1) preparing an aggregate forming agent: respectively taking alkali slag, steel slag, waste gypsum mold and a cementing material, crushing, grinding and sieving to obtain alkali slag powder, steel slag powder, waste gypsum mold powder and cementing powder, and then uniformly mixing the alkali slag powder, the steel slag powder, the waste gypsum mold powder, the cementing material and an additive to obtain an aggregate forming agent, wherein the particle size of the aggregate forming agent is 40-80 mu m;
(2) and (3) mixing the cement with the aggregate forming agent obtained in the step (2), cellulose and an accelerator, then adding water, and uniformly mixing to obtain the outer wall anti-cracking mortar.
Test examples
1. The masonry mortar obtained in examples 1 to 3 and comparative examples 1 to 2 was examined according to JC890 to 2001, and the results of the examination are shown in Table 1.
TABLE 1 masonry mortar test results
As can be seen from the results in Table 1, the mortar obtained in comparative example 1 has a degree of delamination of 20mm, and the structure is unstable as compared with examples 1 to 3, and the degree of delamination of the mortar on the market is much higher than that of the mortar of the present invention. The setting time of the comparative examples 1 and 2 is too long or too short, and the problems of low compressive strength, insufficient bonding strength and poor freezing resistance also exist, but the masonry mortar improved by the examples 1-3 of the invention has the advantages of low layering degree, moderate setting time, high compressive strength, high bonding strength, excellent freezing resistance, small shrinkage value, excellent performance and wide application prospect.
2. The exterior wall anti-crack mortar obtained in examples 4 to 5 and comparative example 3 was tested according to JC890 to 2001 (conducted with reference to the test standard for gypsum mortar), and the test results are shown in Table 2.
TABLE 2 detection results of anti-crack mortar for exterior wall
As can be seen from the results in Table 2, the fracture-resistant mortar for exterior walls, which does not contain cement, provided by the invention has the advantages that the flexural strength, the compressive strength and the bonding strength are higher than the national standard requirements, wherein the flexural strength is more than 3.9MPa, the compressive strength is more than 4.9MPa, the bonding strength is more than 1.3MPa, the shrinkage rate is 0.01%, and various performances are excellent. Compared with the mortar adopting cement in the comparative example 3, the mortar adopting the industrial solid waste as the main raw material provided by the invention not only realizes the effective utilization of the industrial solid waste, but also has excellent performances and good service performance.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and shall cover the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (2)
1. The mortar is characterized by being prepared from the following raw materials in parts by weight:
8-10 parts of steel slag powder, 2-5 parts of aggregate forming agent, 1.5-6 parts of water, 3-5 parts of cellulose and 0.04-1.5 parts of accelerating agent;
the aggregate forming agent comprises the following components in parts by weight:
15-25 parts of alkaline residue, namely,
35-45 parts of steel slag,
3-6 parts of a waste gypsum mould,
30-35 parts of a cementing material,
0-1.5 parts of an additive;
the cementing material is cement clinker, and the additive is a reinforcing agent or a grinding aid;
the particle size of the steel slag powder is 100-1000 mu m; the steel slag powder comprises 3 parts of steel slag powder with the particle size of 1mm, 2 parts of steel slag powder with the particle size of 150 mu m and 1 part of steel slag powder with the particle size of 100 mu m in parts by weight;
the preparation method of the mortar comprises the following steps:
(1) taking steel slag, grinding and sorting to obtain steel slag powder;
(2) preparing an aggregate forming agent: respectively taking the alkali slag, the steel slag, the waste gypsum mold and the cementing material, crushing, grinding and sieving to obtain alkali slag powder, steel slag powder, waste gypsum mold powder and cementing powder, and then uniformly mixing the alkali slag powder, the steel slag powder, the waste gypsum mold powder, the cementing powder and the additive to obtain an aggregate forming agent; wherein: the particle size of the aggregate forming agent is 40-80 μm;
(3) and (3) mixing the steel slag powder obtained in the step (1) with the aggregate forming agent obtained in the step (2), cellulose and an accelerating agent, then adding water, and uniformly mixing to obtain the mortar.
2. The mortar of claim 1, which is prepared from the following raw materials in parts by weight:
10 parts of steel slag powder, 3 parts of aggregate forming agent and 2 parts of water.
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| CN101081727A (en) * | 2006-05-31 | 2007-12-05 | 上海宝钢综合开发公司 | Steel slag sand dry powder mortar and production technique thereof |
| JP2012006801A (en) * | 2010-06-25 | 2012-01-12 | Taisei Corp | Method for estimating mortar strength |
| CN102745970A (en) * | 2012-06-12 | 2012-10-24 | 周青生 | Composition for preparing dry-mixed mortar |
| JP2013227185A (en) * | 2012-03-29 | 2013-11-07 | Landes Co Ltd | Composition for mortar or concrete and molding produced by molding the composition |
| CN103723975A (en) * | 2013-12-31 | 2014-04-16 | 宝钢建筑***集成有限公司 | Rapid-hardening steel slag mortar capable of being constructed by spraying |
| CN104193202A (en) * | 2014-08-06 | 2014-12-10 | 华南理工大学 | Cement with high water-retaining property |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101081727A (en) * | 2006-05-31 | 2007-12-05 | 上海宝钢综合开发公司 | Steel slag sand dry powder mortar and production technique thereof |
| JP2012006801A (en) * | 2010-06-25 | 2012-01-12 | Taisei Corp | Method for estimating mortar strength |
| JP2013227185A (en) * | 2012-03-29 | 2013-11-07 | Landes Co Ltd | Composition for mortar or concrete and molding produced by molding the composition |
| CN102745970A (en) * | 2012-06-12 | 2012-10-24 | 周青生 | Composition for preparing dry-mixed mortar |
| CN103723975A (en) * | 2013-12-31 | 2014-04-16 | 宝钢建筑***集成有限公司 | Rapid-hardening steel slag mortar capable of being constructed by spraying |
| CN104193202A (en) * | 2014-08-06 | 2014-12-10 | 华南理工大学 | Cement with high water-retaining property |
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Denomination of invention: A mortar and its preparation method Granted publication date: 20220628 Pledgee: Tangshan Huayan Road Branch of China Postal Savings Bank Co.,Ltd. Pledgor: TANGSHAN ZHONGTAO JIYUAN ENGINEERING DESIGN Co.,Ltd. Registration number: Y2024980012509 |
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