CN113603425B - Wet-mixed mortar and preparation method and application thereof - Google Patents
Wet-mixed mortar and preparation method and application thereof Download PDFInfo
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- CN113603425B CN113603425B CN202110977831.4A CN202110977831A CN113603425B CN 113603425 B CN113603425 B CN 113603425B CN 202110977831 A CN202110977831 A CN 202110977831A CN 113603425 B CN113603425 B CN 113603425B
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- 239000004570 mortar (masonry) Substances 0.000 title claims abstract description 146
- 238000002360 preparation method Methods 0.000 title claims abstract description 63
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 83
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 57
- 239000002956 ash Substances 0.000 claims abstract description 55
- 239000004568 cement Substances 0.000 claims abstract description 51
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 50
- 239000010881 fly ash Substances 0.000 claims abstract description 50
- 239000004576 sand Substances 0.000 claims abstract description 50
- 239000003651 drinking water Substances 0.000 claims abstract description 48
- 235000020188 drinking water Nutrition 0.000 claims abstract description 48
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 38
- 239000011593 sulfur Substances 0.000 claims abstract description 35
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 35
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000002994 raw material Substances 0.000 claims abstract description 13
- 238000002156 mixing Methods 0.000 claims description 30
- 238000003756 stirring Methods 0.000 claims description 30
- 229920003086 cellulose ether Polymers 0.000 claims description 16
- 239000003518 caustics Substances 0.000 claims description 13
- 239000010802 sludge Substances 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 3
- 239000003513 alkali Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- 239000004567 concrete Substances 0.000 abstract description 10
- 239000004566 building material Substances 0.000 abstract description 2
- 238000005336 cracking Methods 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 22
- 239000007787 solid Substances 0.000 description 18
- 238000005303 weighing Methods 0.000 description 10
- 206010016807 Fluid retention Diseases 0.000 description 9
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 6
- 238000006703 hydration reaction Methods 0.000 description 5
- 238000006298 dechlorination reaction Methods 0.000 description 4
- 239000005864 Sulphur Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 239000011398 Portland cement Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000004964 aerogel Substances 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 229910001653 ettringite Inorganic materials 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000001866 hydroxypropyl methyl cellulose Substances 0.000 description 1
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 description 1
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 description 1
- UFVKGYZPFZQRLF-UHFFFAOYSA-N hydroxypropyl methyl cellulose Chemical group OC1C(O)C(OC)OC(CO)C1OC1C(O)C(O)C(OC2C(C(O)C(OC3C(C(O)C(O)C(CO)O3)O)C(CO)O2)O)C(CO)O1 UFVKGYZPFZQRLF-UHFFFAOYSA-N 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011895 specific detection Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000008719 thickening Effects 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
- 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
- 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
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
-
- 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
- C04B2103/46—Water-loss or fluid-loss reducers, hygroscopic or hydrophilic agents, water retention agents
- C04B2103/465—Water-sorbing agents, hygroscopic or hydrophilic agents
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The application relates to the field of building materials, and particularly discloses wet-mixed mortar and a preparation method and application thereof. The wet-mixed mortar comprises the following raw materials in parts by weight: 280-320 parts of cement, 70-90 parts of fly ash, 1320-1480 parts of river sand, 140-180 parts of drinking water, 5-15 parts of mortar water reducing agent and 315-715 parts of water-retaining agent, wherein the water-retaining agent comprises butyl acrylate, industrial alkaline residue and sulfur fixation ash, and the weight ratio of the three is 1: (4-6): (2-4). The wet-mixed mortar can be used for plastering indoor walls or outdoor walls, and has the advantages of improving the water retention rate of the mortar, reducing the water absorbed by aerated concrete blocks, reducing the cracking of a plastering layer and improving the quality of the plastering layer.
Description
Technical Field
The application relates to the field of building materials, in particular to wet-mixed mortar and a preparation method and application thereof.
Background
The wet-mixed mortar is a mortar mixture which is prepared by metering and mixing cement, sand, a water-retaining thickening material, fly ash or other mineral admixtures, an additive, water and the like in a centralized stirring station according to a certain proportion, then transporting the mixture to a use place by using a stirring transport vehicle, storing the mixture in a sealed container and needing to be used within a specified time.
In the related art, the chinese patent application with publication number CB105776989A discloses a novel wet-mixed mortar, comprising the following components in weight percent: 150kg/m of aerogel hydraulic portland cement3～250kg/m3(ii) a 40kg/m of fly ash3～150kg/m3(ii) a 1280kg/m machine-made sand3～1300kg/m3(ii) a 184kg/m of water3～276kg/m3。
In modern buildings, aerated concrete blocks are important components of various energy-saving building envelopes. After the aerated concrete blocks are used for enclosing a wall body, the wet-mixed mortar is smeared on the wall surface to form a plastering layer.
With respect to the above-described related art, the inventors consider that: because the moisture of mortar is easily absorbed by aerated concrete blocks, the mortar of the plastering layer is not condensed, and the tensile stress generated by volume shrinkage can not be resisted, so that the plastering layer is cracked, and the quality of the plastering layer is reduced.
Disclosure of Invention
In order to improve the water retention rate of the wet-mixed mortar, reduce the water absorbed by the aerated concrete blocks, reduce the cracking of a plastering layer and improve the quality of the plastering layer, the application provides the wet-mixed mortar and a preparation method and application thereof.
In a first aspect, the application provides a wet-mixed mortar, which adopts the following technical scheme:
the wet-mixed mortar comprises the following raw materials in parts by weight: 280-320 parts of cement, 70-90 parts of fly ash, 1320-1480 parts of river sand, 140-180 parts of drinking water, 5-15 parts of mortar water reducing agent and 315-715 parts of water-retaining agent, wherein the water-retaining agent comprises butyl acrylate, industrial alkaline residue and sulfur fixation ash, and the weight ratio of the butyl acrylate to the industrial alkaline residue to the sulfur fixation ash is 1: (4-6): (2-4).
By adopting the technical scheme, after the solid sulfur ash and the industrial alkaline residue absorb water, the butyl acrylate improves the plasticizing performance of the industrial alkaline residue and the solid sulfur ash, so that the stability of the solid sulfur ash and the industrial alkaline residue in the wet-mixed mortar is improved, the water retention performance of the wet-mixed mortar is further improved, the industrial alkaline residue neutralizes and consumes carboxyl in the butyl acrylate, the situation that the water retention performance of the solid sulfur ash and the industrial alkaline residue is reduced due to the increase of the carboxyl is effectively reduced, the water retention performance of the wet-mixed mortar is further improved, the water absorbed by aerated concrete blocks is further reduced, the situation that a plastering layer cracks is effectively reduced, and the quality of the plastering layer is improved.
Preferably, the preparation method of the water-retaining agent comprises the following steps of mixing and stirring the industrial caustic sludge and the solid sulfur ash uniformly, adding the butyl acrylate, and stirring and mixing uniformly again.
By adopting the technical scheme, the butyl acrylate is added after the industrial alkaline residue and the solid sulfur ash are uniformly mixed, so that the dispersion uniformity of the industrial alkaline residue and the solid sulfur ash is effectively improved, the agglomeration condition of the industrial alkaline residue and the solid sulfur ash is reduced, and the influence on the performance of the water-retaining agent is reduced.
Preferably, the industrial caustic sludge is subjected to dechlorination treatment.
By adopting the technical scheme, the content of chloride ions in the industrial alkaline residue is reduced, so that the chloride ions permeating into the aerated concrete blocks from the wet-mixed mortar are reduced, and the damage to the aerated concrete blocks is reduced; the industrial alkaline residue after dechlorination accelerates the hydration reaction rate through the ettringite crystal contained in the industrial alkaline residue, absorbs the water released in the sulfur fixation ash, releases the water at the later stage and effectively reduces the water permeating into the aerated concrete building block.
Preferably, the fineness of the sulfur fixation ash is 325-500 meshes.
By adopting the technical scheme, the fineness of the solid sulfur ash is selected, so that the activity of the solid sulfur ash is improved, and the bonded performance of the water-retaining agent is improved.
Preferably, the fabric also comprises 30-50 parts of cellulose ether.
By adopting the technical scheme, the cellulose ether further improves the plasticizing performance of the wet-mixed mortar, so that the water retention rate of the wet-mixed mortar is further improved.
Preferably, the mortar comprises the following raw materials, by weight, 300 parts of cement, 80 parts of fly ash, 1400 parts of river sand, 160 parts of drinking water, 10 parts of a mortar water reducing agent, 55 parts of butyl acrylate, 275 parts of industrial alkali residue, 165 parts of sulfur fixation ash and 40 parts of cellulose ether.
By adopting the technical scheme, the adding amount of each raw material is limited, so that the proportioning is more accurate, and the performance of the wet-mixed mortar is further improved.
In a second aspect, the application provides a preparation method of wet-mixed mortar, which adopts the following technical scheme:
a preparation method of wet-mixed mortar comprises the following steps of mixing raw materials, and uniformly mixing the raw materials by stirring to obtain the wet-mixed mortar.
By adopting the technical scheme, the wet-mixed mortar can be prepared by uniformly mixing and stirring the raw materials, and the operation is simple and convenient.
In a third aspect, the application provides a use of wet-mixed mortar, which adopts the following technical scheme:
use of a wet-mixed mortar for finishing an indoor wall or an outdoor wall.
In summary, the present application has the following beneficial effects:
1. butyl acrylate improves the plastifying ability of solid sulphur ash and industry alkaline residue in this application, improves the water-retaining rate of wet-mixed mortar, and solid sulphur ash outwards releases water earlier stage, absorbs the water of partial solid sulphur ash release when industry alkaline residue promotes hydration reaction to protect the moisture in the wet-mixed mortar, reduce the moisture loss, thereby later stage industry alkaline residue release water provides moisture for later stage hydration reaction, reduces the condition of plastering layer fracture.
2. This application industry alkaline residue is through dechlorination processing back, and industry alkaline residue absorbs water the back, effectively reduces the water-soluble chloride ion who dissolves in aquatic, reduces the chloride ion that permeates into in the concrete building block, reduces the damage to the wall body.
3. According to the method, the wet-mixed mortar can be obtained by uniformly stirring and mixing the raw materials, and the operation is simple and convenient.
Detailed Description
The cement is P.II42.5 cement, the mortar water reducing agent is a polycarboxylic acid water reducing agent, the butyl acrylate is industrial grade, and the cellulose is hydroxypropyl methyl cellulose, which are purchased from the market.
The present application will be described in further detail with reference to examples.
Preparation example
Preparation example 1
Weighing 400kg of industrial caustic sludge and 200kg of sulfur fixation ash, stirring and mixing uniformly, wherein the fineness of the sulfur fixation ash is 400 meshes, and then adding 100kg of butyl acrylate, stirring and mixing uniformly to obtain the water-retaining agent.
Preparation example 2
Weighing 500kg of industrial caustic sludge and 200kg of sulfur fixation ash, stirring and mixing uniformly, wherein the fineness of the sulfur fixation ash is 400 meshes, and then adding 100kg of butyl acrylate, stirring and mixing uniformly to obtain the water-retaining agent.
Preparation example 3
Weighing 600kg of industrial caustic sludge and 200kg of sulfur fixation ash, stirring and mixing uniformly, wherein the fineness of the sulfur fixation ash is 400 meshes, and then adding 100kg of butyl acrylate, stirring and mixing uniformly to obtain the water-retaining agent.
Preparation example 4
Weighing 400kg of industrial caustic sludge and 300kg of sulfur-fixing ash, stirring and mixing uniformly, wherein the fineness of the sulfur-fixing ash is 400 meshes, and then adding 100kg of butyl acrylate, stirring and mixing uniformly to obtain the water-retaining agent.
Preparation example 5
Weighing 500kg of industrial caustic sludge and 300kg of sulfur-fixing ash, stirring and mixing uniformly, wherein the fineness of the sulfur-fixing ash is 400 meshes, and then adding 100kg of butyl acrylate, stirring and mixing uniformly to obtain the water-retaining agent.
Preparation example 6
Weighing 600kg of industrial caustic sludge and 300kg of sulfur-fixing ash, stirring and mixing uniformly, wherein the fineness of the sulfur-fixing ash is 400 meshes, and then adding 100kg of butyl acrylate, stirring and mixing uniformly to obtain the water-retaining agent.
Preparation example 7
Weighing 400kg of industrial caustic sludge and 400kg of sulfur-fixing ash, stirring and mixing uniformly, wherein the fineness of the sulfur-fixing ash is 400 meshes, and then adding 100kg of butyl acrylate, stirring and mixing uniformly to obtain the water-retaining agent.
Preparation example 8
Weighing 500kg of industrial caustic sludge and 400kg of sulfur-fixing ash, stirring and mixing uniformly, wherein the fineness of the sulfur-fixing ash is 400 meshes, and then adding 100kg of butyl acrylate, stirring and mixing uniformly to obtain the water-retaining agent.
Preparation example 9
Weighing 600kg of industrial caustic sludge and 400kg of sulfur-fixing ash, stirring and mixing uniformly, wherein the fineness of the sulfur-fixing ash is 400 meshes, and then adding 100kg of butyl acrylate, stirring and mixing uniformly to obtain the water-retaining agent.
Preparation example 10
And (3) washing the industrial alkaline residue with water to discharge water-soluble chloride ions, and then separating, washing and drying solid and liquid to obtain the modified alkaline residue.
Weighing 500kg of modified caustic sludge and 300kg of sulfur fixation ash, stirring and mixing uniformly, adding 100kg of butyl acrylate, stirring and mixing uniformly to obtain the water-retaining agent.
Preparation example 11
The difference from preparation example 10 is that the fineness of the sulfur-fixing ash is 150 mesh.
Preparation example 12
The difference from preparation example 10 is that the fineness of the sulfur-fixing ash is 800 meshes.
Preparation example 13
The difference from preparation example 10 is that the fineness of the sulfur-fixing ash is 325 mesh.
Preparation example 14
The difference from preparation example 10 is that the fineness of the sulfur-fixing ash is 500 mesh.
Examples
Example 1
280kg of cement, 70kg of fly ash, 1320kg of river sand, 140kg of drinking water, 5kg of mortar water reducing agent and 315kg of water-retaining agent prepared in preparation example 1 are weighed, mixed and stirred uniformly to prepare wet-mixed mortar.
Example 2
280kg of cement, 70kg of fly ash, 1320kg of river sand, 140kg of drinking water, 5kg of mortar water reducing agent and 495kg of the water-retaining agent prepared in preparation example 1 are weighed, mixed and stirred uniformly to prepare wet-mixed mortar.
Example 3
300kg of cement, 70kg of fly ash, 1320kg of river sand, 140kg of drinking water, 5kg of mortar water reducing agent and 495kg of the water-retaining agent prepared in preparation example 5 are weighed, mixed and stirred uniformly to prepare wet-mixed mortar.
Example 4
320kg of cement, 70kg of fly ash, 1320kg of river sand, 140kg of drinking water, 5kg of mortar water reducing agent and 495kg of the water-retaining agent prepared in preparation example 5 are weighed, mixed and stirred uniformly to prepare wet-mixed mortar.
Example 5
300kg of cement, 80kg of fly ash, 1320kg of river sand, 140kg of drinking water, 5kg of mortar water reducing agent and 495kg of the water-retaining agent prepared in preparation example 5 are weighed, mixed and stirred uniformly to prepare wet-mixed mortar.
Example 6
300kg of cement, 90kg of fly ash, 1320kg of river sand, 140kg of drinking water, 5kg of mortar water reducing agent and 495kg of the water-retaining agent prepared in preparation example 5 are weighed, mixed and stirred uniformly to prepare wet-mixed mortar.
Example 7
300kg of cement, 80kg of fly ash, 1400kg of river sand, 140kg of drinking water, 5kg of mortar water reducing agent and 495kg of the water-retaining agent prepared in preparation example 5 are weighed, mixed and stirred uniformly to prepare wet-mixed mortar.
Example 8
300kg of cement, 80kg of fly ash, 1480kg of river sand, 140kg of drinking water, 5kg of mortar water reducing agent and 495kg of the water-retaining agent prepared in preparation example 5 are weighed, mixed and stirred uniformly to prepare wet-mixed mortar.
Example 9
300kg of cement, 80kg of fly ash, 1400kg of river sand, 160kg of drinking water, 5kg of mortar water reducing agent and 495kg of the water-retaining agent prepared in preparation example 5 are weighed, mixed and stirred uniformly to prepare wet-mixed mortar.
Example 10
300kg of cement, 80kg of fly ash, 1400kg of river sand, 180kg of drinking water, 5kg of mortar water reducing agent and 495kg of the water-retaining agent prepared in preparation example 5 are weighed, mixed and stirred uniformly to prepare wet-mixed mortar.
Example 11
300kg of cement, 80kg of fly ash, 1400kg of river sand, 160kg of drinking water, 10kg of mortar water reducing agent and 495kg of the water-retaining agent prepared in preparation example 5 are weighed, mixed and stirred uniformly to prepare wet-mixed mortar.
Example 12
300kg of cement, 80kg of fly ash, 1400kg of river sand, 160kg of drinking water, 15kg of mortar water reducing agent and 495kg of the water-retaining agent prepared in preparation example 5 are weighed, mixed and stirred uniformly to prepare wet-mixed mortar.
Example 13
300kg of cement, 80kg of fly ash, 1400kg of river sand, 160kg of drinking water, 10kg of mortar water reducing agent and 315kg of water-retaining agent prepared in preparation example 5 are weighed, mixed and stirred uniformly to prepare wet-mixed mortar.
Example 14
300kg of cement, 80kg of fly ash, 1400kg of river sand, 160kg of drinking water, 10kg of mortar water reducing agent and 715kg of the water-retaining agent prepared in preparation example 5 are weighed, mixed and stirred uniformly to prepare wet-mixed mortar.
Example 15
300kg of cement, 80kg of fly ash, 1400kg of river sand, 160kg of drinking water, 10kg of mortar water reducing agent and 495kg of the water-retaining agent prepared in preparation example 1 are weighed, mixed and stirred uniformly to prepare wet-mixed mortar.
Example 16
300kg of cement, 80kg of fly ash, 1400kg of river sand, 160kg of drinking water, 10kg of mortar water reducing agent and 495kg of the water-retaining agent prepared in preparation example 2 are weighed, mixed and stirred uniformly to prepare wet-mixed mortar.
Example 17
300kg of cement, 80kg of fly ash, 1400kg of river sand, 160kg of drinking water, 10kg of mortar water reducing agent and 495kg of the water-retaining agent prepared in preparation example 3 are weighed, mixed and stirred uniformly to prepare wet-mixed mortar.
Example 18
300kg of cement, 80kg of fly ash, 1400kg of river sand, 160kg of drinking water, 10kg of mortar water reducing agent and 495kg of the water-retaining agent prepared in preparation example 4 are weighed, mixed and stirred uniformly to prepare wet-mixed mortar.
Example 19
300kg of cement, 80kg of fly ash, 1400kg of river sand, 160kg of drinking water, 10kg of mortar water reducing agent and 495kg of the water-retaining agent prepared in preparation example 6 are weighed, mixed and stirred uniformly to prepare wet-mixed mortar.
Example 20
300kg of cement, 80kg of fly ash, 1400kg of river sand, 160kg of drinking water, 10kg of mortar water reducing agent and 495kg of the water-retaining agent prepared in preparation example 7 are weighed, mixed and stirred uniformly to prepare wet-mixed mortar.
Example 21
300kg of cement, 80kg of fly ash, 1400kg of river sand, 160kg of drinking water, 10kg of mortar water reducing agent and 495kg of the water-retaining agent prepared in preparation example 8 are weighed, mixed and stirred uniformly to prepare wet-mixed mortar.
Example 22
300kg of cement, 80kg of fly ash, 1400kg of river sand, 160kg of drinking water, 10kg of mortar water reducing agent and 495kg of the water-retaining agent prepared in preparation example 9 are weighed, mixed and stirred uniformly to prepare wet-mixed mortar.
Example 23
300kg of cement, 80kg of fly ash, 1400kg of river sand, 160kg of drinking water, 10kg of mortar water reducing agent, 495kg of water retaining agent prepared in preparation example 5 and kg of cellulose ether are weighed, mixed and stirred uniformly to prepare wet-mixed mortar.
Example 24
300kg of cement, 80kg of fly ash, 1400kg of river sand, 160kg of drinking water, 10kg of mortar water reducing agent, 495kg of water retaining agent prepared in preparation example 5 and kg of cellulose ether are weighed, mixed and stirred uniformly to prepare wet-mixed mortar.
Example 25
300kg of cement, 80kg of fly ash, 1400kg of river sand, 160kg of drinking water, 10kg of mortar water reducing agent, 495kg of water retaining agent prepared in preparation example 5 and kg of cellulose ether are weighed, mixed and stirred uniformly to prepare wet-mixed mortar.
Example 26
300kg of cement, 80kg of fly ash, 1400kg of river sand, 160kg of drinking water, 10kg of mortar water reducing agent, 495kg of water retaining agent prepared in preparation example 5 and kg of cellulose ether are weighed, mixed and stirred uniformly to prepare wet-mixed mortar.
Example 27
300kg of cement, 80kg of fly ash, 1400kg of river sand, 160kg of drinking water, 10kg of mortar water reducing agent, 495kg of water retaining agent prepared in preparation example 5 and kg of cellulose ether are weighed, mixed and stirred uniformly to prepare wet-mixed mortar.
Example 28
300kg of cement, 80kg of fly ash, 1400kg of river sand, 160kg of drinking water, 10kg of mortar water reducing agent, 495kg of water retaining agent prepared in preparation example 10 and kg of cellulose ether are weighed, mixed and stirred uniformly to prepare wet-mixed mortar.
Example 29
300kg of cement, 80kg of fly ash, 1400kg of river sand, 160kg of drinking water, 10kg of mortar water reducing agent, 495kg of water retaining agent prepared in preparation example 11 and kg of cellulose ether are weighed, mixed and stirred uniformly to prepare wet-mixed mortar.
Example 30
300kg of cement, 80kg of fly ash, 1400kg of river sand, 160kg of drinking water, 10kg of mortar water reducing agent, 495kg of water retaining agent prepared in preparation example 12 and kg of cellulose ether are weighed, mixed and stirred uniformly to prepare wet-mixed mortar.
Example 31
300kg of cement, 80kg of fly ash, 1400kg of river sand, 160kg of drinking water, 10kg of mortar water reducing agent, 495kg of water retaining agent prepared in preparation example 13 and kg of cellulose ether are weighed, mixed and stirred uniformly to prepare wet-mixed mortar.
Example 32
300kg of cement, 80kg of fly ash, 1400kg of river sand, 160kg of drinking water, 10kg of mortar water reducing agent, 495kg of water retaining agent prepared in preparation example 14 and kg of cellulose ether are weighed, mixed and stirred uniformly to prepare wet-mixed mortar.
Example 33
320kg of cement, 90kg of fly ash, 1480kg of river sand, 180kg of drinking water, 15kg of mortar water reducing agent and 715kg of the water-retaining agent prepared in preparation example 9 are weighed, mixed and stirred uniformly to prepare wet-mixed mortar.
Comparative example
Comparative example 1
300kg of cement, 80kg of fly ash, 1400kg of river sand, 160kg of drinking water, 10kg of mortar water reducing agent, 55kg of butyl acrylate and 275kg of industrial alkaline residue are weighed, mixed and stirred uniformly to prepare wet-mixed mortar.
Comparative example 2
300kg of cement, 80kg of fly ash, 1400kg of river sand, 160kg of drinking water, 10kg of mortar water reducing agent, 55kg of butyl acrylate and 165kg of sulfur fixation ash are weighed, mixed and stirred uniformly to prepare wet-mixed mortar.
Comparative example 3
300kg of cement, 80kg of fly ash, 1400kg of river sand, 160kg of drinking water, 10kg of mortar water reducing agent, 275kg of industrial alkaline residue and 165kg of sulfur fixation ash are weighed, mixed and stirred uniformly to prepare wet-mixed mortar.
Comparative example 4
300kg of cement, 80kg of fly ash, 1400kg of river sand, 160kg of drinking water, 10kg of mortar water reducing agent and 55kg of butyl acrylate are weighed, mixed and stirred uniformly to prepare the wet-mixed mortar.
Comparative example 5
300kg of cement, 80kg of fly ash, 1400kg of river sand, 160kg of drinking water, 10kg of mortar water reducing agent and 275kg of industrial alkaline residue are weighed, mixed and stirred uniformly to prepare wet-mixed mortar.
Comparative example 6
300kg of cement, 80kg of fly ash, 1400kg of river sand, 160kg of drinking water, 10kg of mortar water reducing agent and 165kg of sulfur fixation ash are weighed, mixed and stirred uniformly to prepare the wet-mixed mortar.
Comparative example 7
300kg of cement, 80kg of fly ash, 1400kg of river sand, 160kg of drinking water, 10kg of mortar water reducing agent and 100kg of the water-retaining agent prepared in preparation example 5 are weighed, mixed and stirred uniformly to prepare wet-mixed mortar.
Comparative example 8
300kg of cement, 80kg of fly ash, 1400kg of river sand, 160kg of drinking water, 10kg of mortar water reducing agent and 800kg of water retaining agent prepared in preparation example 5 are weighed, mixed and stirred uniformly to prepare wet-mixed mortar.
TABLE 1 EXAMPLES 1 TO 33 AND COMPARATIVE EXAMPLES 1 TO 8 raw material tables (kg)
| Cement | Fly ash | River sand | Drinking water | Mortar water reducing agent | |
| Example 1 | 280 | 70 | 1320 | 140 | 5 |
| Example 2 | 280 | 70 | 1320 | 140 | 5 |
| Example 3 | 300 | 70 | 1320 | 140 | 5 |
| Example 4 | 320 | 70 | 1320 | 140 | 5 |
| Example 5 | 300 | 80 | 1320 | 140 | 5 |
| Example 6 | 300 | 90 | 1320 | 140 | 5 |
| Example 7 | 300 | 80 | 1400 | 140 | 5 |
| Example 8 | 300 | 80 | 1480 | 140 | 5 |
| Example 9 | 300 | 80 | 1400 | 160 | 5 |
| Example 10 | 300 | 80 | 1400 | 180 | 5 |
| Example 11 | 300 | 80 | 1400 | 160 | 10 |
| Example 12 | 300 | 80 | 1400 | 160 | 15 |
| Example 13 | 300 | 80 | 1400 | 160 | 10 |
| Practice ofExample 14 | 300 | 80 | 1400 | 160 | 10 |
| Example 15 | 300 | 80 | 1400 | 160 | 10 |
| Example 16 | 300 | 80 | 1400 | 160 | 10 |
| Example 17 | 300 | 80 | 1400 | 160 | 10 |
| Example 18 | 300 | 80 | 1400 | 160 | 10 |
| Example 19 | 300 | 80 | 1400 | 160 | 10 |
| Example 20 | 300 | 80 | 1400 | 160 | 10 |
| Example 21 | 300 | 80 | 1400 | 160 | 10 |
| Example 22 | 300 | 80 | 1400 | 160 | 10 |
| Example 23 | 300 | 80 | 1400 | 160 | 10 |
| Example 24 | 300 | 80 | 1400 | 160 | 10 |
| Example 25 | 300 | 80 | 1400 | 160 | 10 |
| Example 26 | 300 | 80 | 1400 | 160 | 10 |
| Example 27 | 300 | 80 | 1400 | 160 | 10 |
| Example 28 | 300 | 80 | 1400 | 160 | 10 |
| Example 29 | 300 | 80 | 1400 | 160 | 10 |
| Example 30 | 300 | 80 | 1400 | 160 | 10 |
| Example 31 | 300 | 80 | 1400 | 160 | 10 |
| Example 32 | 300 | 80 | 1400 | 160 | 10 |
| Example 33 | 320 | 90 | 1480 | 180 | 15 |
| Comparative example 1 | 300 | 80 | 1400 | 160 | 10 |
| Comparative example 2 | 300 | 80 | 1400 | 160 | 10 |
| Comparative example 3 | 300 | 80 | 1400 | 160 | 10 |
| Comparative example 4 | 300 | 80 | 1400 | 160 | 10 |
| Comparative example 5 | 300 | 80 | 1400 | 160 | 10 |
| Comparative example 6 | 300 | 80 | 1400 | 160 | 10 |
| Comparative example 7 | 300 | 80 | 1400 | 160 | 10 |
| Comparative example 8 | 300 | 80 | 1400 | 160 | 10 |
Performance test
The water retention rate, the 28d compressive strength and the 28d shrinkage rate are respectively determined by referring to GB/T25181-2010 premixed mortar and JGJ/T70-2009 building mortar basic performance test method standard, and specific detection data are shown in the following table.
Table 2 table of performance testing data
By combining example 11, example 13 and example 14 and combining table 2, it can be seen that the performance of the wet-mixed mortar is effectively improved by adjusting the addition amount of the water retaining agent.
By combining example 2, example 3, example 4, example 5, example 6, example 7, example 8, example 9, example 10, example 11 and example 12 with table 2, it can be seen that the wet-mixed mortar performance can be improved by selecting the amount of cement, fly ash, river sand, drinking water and mortar water reducing agent to be added.
By combining example 11, example 15, example 16, example 17, example 18, example 19, example 20, example 21 and example 22 and table 2, it can be seen that the performance of the wet-mixed mortar is effectively improved by adjusting the water-retaining agent ratio.
In combination with example 11, example 23, example 24, example 25, example 26 and example 27 and in combination with table 2, it can be seen that the plasticizing performance and thus the water retention of the wet-mixed mortar are improved by adding cellulose ether.
By combining the example 11 and the example 28 and combining the table 2, it can be seen that the compressive property of the wet-mixed mortar is effectively improved and the damage of water-soluble chloride ions to the plastering layer is reduced by carrying out dechlorination treatment on the industrial alkaline residue.
By combining example 28, example 29, example 30, example 31 and example 32 and combining table 2, it can be seen that the wet-mixed mortar performance is improved while the grinding energy consumption is reduced by selecting the fineness of the solid sulfur ash.
By combining the example 11, the comparative example 1, the comparative example 4, the comparative example 5 and the comparative example 6 and combining the table 2, the water retention rate of the wet-mixed mortar is effectively improved and the dry shrinkage rate of the wet-mixed mortar is reduced by combining the butyl acrylate, the industrial alkaline residue and the sulfur fixation ash. The reason is that the early-stage solid sulfur ash releases water outwards, the industrial alkaline residue promotes hydration reaction and absorbs part of water released by the solid sulfur ash at the same time, so that water in the wet-mixed mortar is protected, water loss is reduced, the later-stage industrial alkaline residue releases water to provide water for later-stage hydration reaction, butyl acrylate improves the plasticizing performance of the solid sulfur ash and the industrial alkaline residue, the water retention rate of the wet-mixed mortar is improved, and the situation that water is secreted due to the fact that the plasticizing performance of the wet-mixed mortar is crossed due to the increase of carboxylic acid in the butyl acrylate is reduced.
The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.
Claims (7)
1. The wet-mixed mortar is characterized by comprising the following raw materials in parts by weight: 280-320 parts of cement, 70-90 parts of fly ash, 1320-1480 parts of river sand, 140-180 parts of drinking water, 5-15 parts of mortar water reducing agent and 315-715 parts of water-retaining agent, wherein the water-retaining agent comprises butyl acrylate, industrial alkaline residue and sulfur fixation ash, and the weight ratio of the butyl acrylate to the industrial alkaline residue to the sulfur fixation ash is 1: (4-6): (2-4); the preparation method of the water-retaining agent comprises the following steps of mixing and stirring the industrial alkaline residue and the sulfur fixation ash uniformly, adding the butyl acrylate, and stirring and mixing uniformly again.
2. The wet-mixed mortar of claim 1, wherein the industrial caustic sludge is dechlorinated.
3. The wet-mixed mortar of claim 2, wherein the fineness of the sulfur fixation ash is 325-500 meshes.
4. The wet-mixed mortar of claim 1, further comprising 30-50 parts of cellulose ether.
5. The wet-mixed mortar of claim 4, which comprises the following raw materials, by weight, 300 parts of cement, 80 parts of fly ash, 1400 parts of river sand, 160 parts of drinking water, 10 parts of mortar water reducing agent, 55 parts of butyl acrylate, 275 parts of industrial alkali residue, 165 parts of sulfur-fixing ash and 40 parts of cellulose ether.
6. The method for producing a wet-mixed mortar according to any one of claims 1 to 5, wherein the method comprises the steps of: the wet-mixed mortar is prepared by mixing the raw materials and stirring the raw materials uniformly.
7. Use of a wet-mixed mortar according to any one of claims 1 to 5, wherein: the wet-mixed mortar is used for plastering indoor walls or outdoor walls.
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| CN109485333A (en) * | 2018-11-09 | 2019-03-19 | 成都宏基建材股份有限公司 | A kind of common dry-mix of M20 and its preparation and application |
| CN111892325A (en) * | 2020-08-07 | 2020-11-06 | 湖北工业大学 | Preparation method of wet-milling dechlorination nano-alkali residue inorganic salt early strength agent |
| CN113060970A (en) * | 2021-05-12 | 2021-07-02 | 北京金隅水泥节能科技有限公司 | Concrete water-retaining agent, preparation method thereof and concrete using concrete water-retaining agent |
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| CN109485333A (en) * | 2018-11-09 | 2019-03-19 | 成都宏基建材股份有限公司 | A kind of common dry-mix of M20 and its preparation and application |
| CN111892325A (en) * | 2020-08-07 | 2020-11-06 | 湖北工业大学 | Preparation method of wet-milling dechlorination nano-alkali residue inorganic salt early strength agent |
| CN113060970A (en) * | 2021-05-12 | 2021-07-02 | 北京金隅水泥节能科技有限公司 | Concrete water-retaining agent, preparation method thereof and concrete using concrete water-retaining agent |
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