CN110407508A - A kind of wet mixing mortar additive - Google Patents
A kind of wet mixing mortar additive Download PDFInfo
- Publication number
- CN110407508A CN110407508A CN201810526144.9A CN201810526144A CN110407508A CN 110407508 A CN110407508 A CN 110407508A CN 201810526144 A CN201810526144 A CN 201810526144A CN 110407508 A CN110407508 A CN 110407508A
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- Prior art keywords
- wet mixing
- mixing mortar
- mortar
- water
- additive
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Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention belongs to building mortar material fields, more particularly to a kind of wet mixing mortar additive, be made of following constituent mass percentage: 2- acrylamide-2-methyl propane sulfonic sodium 5%-15%, Arabic gum 10%-20%, acrylic acid and acrylate copolymer 3%-5%, water-soluble polysaccharide 2%-5%, polyethylene glycol oxide (PEO) 3%-10%, xanthan gum 3%-8%, retarder 5%-20%, defoaming agent 0.1%-0.3%, stabilizer 0.05%-0.1%, surplus is maltodextrin.Have the advantages that good water-retaining property, the coursing degree of mortar coursing degree of mortar within the open hour lose that small, bonding force is higher, construction workability is good using the wet mixing mortar of product of the present invention.
Description
Technical field
The invention belongs to building mortar material fields, and in particular to a kind of wet mixing mortar additive.
Background technique
Building mortar includes masonry mortar and decorative mortar, and according to the production method of mortar, premixing mortar can be divided into wet
Sand cutting slurry and dry-mixed mortar two major classes.Wherein wet mixing mortar be by cement, mineral admixture, fine aggregate, additive and water and
According to the various components that workability determines, according to the difference of grade of mortar, by a certain percentage, in mixing plant through metering, mixing
Afterwards, place to use is transported to using agitator truck, is put into the storage of special container pond, and at the appointed time using the mix finished
Object.
The most important technical characteristic of construction requirement wet mixing mortar is good water-retaining property, higher bonding force and good applies
Work workability.The holding capacity of the workability (referring mainly to consistency, delamination degree, water retention) of wet mixing mortar is particularly important, and characterizes
Wet mixing mortar can be referred to as the mortar open hour with the index of the ability of smooth construction (workability holding).
Wet mixing mortar has following remarkable advantage: 1) wet mixing mortar is transported to after Concrete Mixing Station directly produces
Building site can be used directly, and be not required to reprocess, but mortar should be stored in closed mortar container cell；2) wet mixing mortar is in profession
Factory's preparation is completed, and the control and guarantee of mortar quality are conducive to；3) raw material choice is larger, and the fine sand that gathers materials can be adopted
With siccative, wet feed can also be used, and be not required to dry, atmosphere pollution had not only been reduced compared to dry-mixed mortar but also cost can be reduced；It can be big
Amount mixes the industrial residues such as flyash, agstone, and is manufactured using the general industries solid waste such as steel slag, industrial tailings
Machine-made sand, can economize on resources, and mortar cost can be reduced；4) construction site environment is good, without dust pollution.It is positive because
For the above-mentioned so significant advantage of wet mixing mortar, from the point of view of environmental angle, wet mixing mortar may replace most routine and build, smear
Face dry mixing cement mortar.
Currently, what additives for Dry-Mixed Mortar generallyd use is that polymer dispersion powder, all kinds of methyl or cellulose ether are (logical
It is fine to be often used methylcellulose (MC), hydroxypropyl methyl cellulose (HPMC), hydroxyethylmethylcellulose (HEMC) or ethoxy
Tie up plain (HEC)), starch and the trunks material such as modified starch ether, polycarboxylic acid salt and naphthalene water reducer, organic-inorganic reinforcing agent
Composition.It is other such as rubber powder and cellulose ethers thickening water conservation component other than conventional polycarboxylic acid salt and naphthalene water reducer
Its solubility in light water is all very low, and generally less than 2%, difficulty is dissolved in water.It is quick with commodity premixing wet mortar
Development, mixing plant are convenient for production in order to automatic gauge, it is desirable that wet mixing mortar additive is the liquid for being relatively easily soluble in water
Product, presently commercially available liquid product, generally comprise two kinds: one is diminishing water-retaining admixture, and volume is usually glue
(gel material content of common buildings mortar is 350kg/m to gel material3Left and right) dosage 2%-4%, be equivalent to 7-14kg/m3；
Another is mortar coagulation time regulator, and liquid, volume is usually that cementitious material (use by the cementitious material of common buildings mortar
Amount is 350kg/m3Left and right) dosage 0.4%-1.4%, be equivalent to 1.5-5kg/m3.In mixing plant, the two successively metering is needed
It is added in mortar mixer and stirs, then expects agitator truck, logistics to construction site down.Currently, liquid mortar is additional
Agent has the disadvantage that: first is that the water-keeping thickening effect of using effect especially mortar is to be improved；Second is that there is secondary
It measures pretty troublesome.In consideration of it, finding compared with being easily soluble in water and water-keeping thickening effect and the good water-keeping thickening mortar of retarding effect
Additive just becomes certainty.
Summary of the invention
The object of the present invention is to provide a kind of wet mixing mortar additives, stir for wet mixing mortar, liquid product is in volume
When 3%-5%, wet mixing mortar has good water-retaining property, (generally for 24 hours), delamination degree loses small, bonding force within the open hour
Advantage higher, construction workability is good.
In order to achieve the above objectives, the present invention provides a kind of wet mixing mortar additive, powder each component mass percent groups
At as follows: 2- acrylamide-2-methyl propane sulfonic sodium 5%-15%, Arabic gum 10%-20%, acrylic acid and acrylate are total
Polymers 3%-5%, water-soluble polysaccharide 2%-5%, polyethylene glycol oxide (PEO) 3%-10%, xanthan gum 3%-8%, retarder
5%-20%, defoaming agent 0.1%-0.3%, stabilizer 0.05%-0.1%, surplus are maltodextrin.
Preferably, the mass percentage composition of the powder wet mixing mortar additive are as follows: 2- acrylamide -2- methyl-prop sulphur
Sour sodium 10%-15%, Arabic gum 15%-20%, acrylic acid and acrylate copolymer 3%-5%, water-soluble polysaccharide 2%-
5%, polyethylene glycol oxide (PEO) 5%-10%, retarder 5%-20%, xanthan gum 5%-8%, defoaming agent 0.1%-0.3%, steady
Determine agent 0.05%-0.08%, surplus is maltodextrin.
Preferably, the molecular weight of the polyethylene glycol oxide is greater than 2,500,000.
Preferably, the water-soluble polysaccharide is guar hydroxypropyltrimonium ammonium chloride.
The retarder selects this field to be routinely used as the substance of retarder.
Preferably, the retarder is white sugar, in molasses, sodium citrate, sodium gluconate, hydroxy ethylene diphosphonic acid
It is at least one.
It is furthermore preferred that the mass ratio that the retarder is white sugar, sodium gluconate and hydroxy ethylene diphosphonic acid is (2-
5): (1-3): 1 mixture.
The defoaming agent is one of organosiloxane defoaming agent, perfluoro octyl sulfonic acid tetraethyl amine.
The stabilizer is one of cocamidopropyl propyl amide hydroxy sulfo lycine, alkyl amidopropyldimethyl amine oxide
Or two kinds.
The preparation method of the above-mentioned additional agent solution of wet mixing mortar: by cosolvent Tween-80 and water (1-2) in mass ratio: 100
It is uniformly mixed, is slowly stirred, when being heated to 60-80 DEG C, above-mentioned wet mixing mortar additive (powder) is added, stirs evenly, is down to
Room temperature is to get the additional agent solution of the wet mixing mortar.
Preferably, the concentration of the additional agent solution of above-mentioned wet mixing mortar is 5%-15%.
It is furthermore preferred that the concentration of the above-mentioned additional agent solution of wet mixing mortar is 8%-12%.
Preferably, outside above-mentioned wet mixing mortar plus in the process for preparation of agent solution, addition accounts for wet mixing mortar additive gross weight
The polymerization inhibitor of the 0.01%-0.2% of amount.
It is furthermore preferred that the polymerization inhibitor is 1,4-benzoquinone.
In the present invention, 2- acrylamide-2-methyl propane sulfonic sodium has the function of certain water-keeping thickening；Acrylic acid and third
Olefin(e) acid ester copolymer is under acidic environment, and molecule is in rolled state, and viscosity is lower, after being added in mortar, because of water in mortar
Muddy water is in alkaline environment, and the carboxylic acid group in copolymer chain forms the carboxylic acid ion for having negative electricity, and main chain stretches,
Colloidal volume is constantly swollen increase, plays water conservation, thickening power；Arabic gum has preferable viscosity, can increase mortar viscosity；Water
Soluble polysaccharide, xanthan gum and maltodextrin can also supply good water-retaining property for mortar lifting, and maltodextrin is easily soluble in water with one
Fixed complementary slow setting and water retention, while the compounding carrier as powder mortar additive product；Retarder delays mortar
Setting time, for guaranteeing enough mortar open hour, convenient for constructing and guaranteeing mortar workability, specific type and dosage can
It is determined and adjusts according to the requirement of temperature and mortar open hour.Cocamidopropyl propyl amide hydroxy sulfo lycine, alkylamide
Dimethylamine oxide has good surface-active can when can make the more uniform stabilization of additional agent solution, act on mortar
Keep mortar more soft.The aqueous solution of the substances such as 2- acrylamide-2-methyl propane sulfonic sodium, Arabic gum is in acid in the present invention
Property and acrylic acid and acrylate copolymer there is preferable compatibility, various substances synergistic effects have wet mixing mortar and protect
It is aqueous it is good, the loss of (generally for 24 hours in) delamination degree is small, bonding force is higher, construction workability is good within the open hour
Advantage.
The wet mixing mortar additive preparation method is simple, and each component is by powder product after mixing according to a conventional method
It can.Liquid is needed in use, being slowly stirred powder product in 60-80 DEG C of hot water, most under the effect of cosolvent Tween-80
It is configured to uniform and stable liquid mortar additive afterwards, it should be noted that when being formulated as liquid solution, be preferably added
Certain polymerization inhibitor can prevent generable polymerization reaction in aqueous solution between each substance, improve the storage time of solution.
When wet mixing mortar additive of the present invention is powder, volume is the 0.3%-0.5% of mortar gel material dosage；
When wet mixing mortar additive of the present invention is liquid solution, volume is the 3%-5% of mortar gel material dosage, commodity (sand
Slurry or concrete) mixing plant can realize that automatic gauge adds additive, convenient for production, be not necessarily to secondary addition, it is safe and reliable, use
It is convenient.Have good water-retaining property, coursing degree of mortar mortar laminated within the open hour using the wet mixing mortar of the additive
The advantage that degree loss is small, bonding force is higher, construction workability is good.
Specific embodiment
It explains in conjunction with the embodiments below.
Raw material used in following embodiment are as follows:
2- acrylamide-2-methyl propane sulfonic sodium, powder, the production of Shouguang City, Shandong Province Song Chuan commercial auxiliaries Co., Ltd.
Arabic gum, powder, the production of Shandong Ya Heng Biotechnology Co., Ltd.
Acrylic acid and acrylate copolymer, liquid, the production of Shenzhen Haichuan Chemical Co., Ltd.
Guar hydroxypropyltrimonium ammonium chloride, powder, the production of Dow Chemical group.
Polyethylene glycol oxide (PEO), molecular weight are greater than 2,500,000, and powder, Shanghai Hui Jin Chemical Co., Ltd. produces.
White sugar, powder, the production of Guangxi land reclamation and cultivation candy companies.
Sodium gluconate, powder, the production of Jiangxi Province Shanggao County Jin Yang food science and technology Co., Ltd.
Xanthan gum, powder, the production of Fu Feng group, Junan, Shandong Province county.
Hydroxy ethylene diphosphonic acid, powder, the production of Guangzhou Hua Zhiwang Chemical Co., Ltd..
Organosiloxane defoaming agent, YB-820, liquid, the production of Shanghai Bi Lang Environmental Protection Technology Co., Ltd.
Perfluoro octyl sulfonic acid tetraethyl amine, powder, Hubei Hengxin Chemical Co., Ltd.'s production.
Maltodextrin, powder, the production of Zhucheng Dongxiao Biotechnology Co., Ltd., Shandong Province.
Polymeric retention aid solvent: Tween-80, liquid, Jiangsu Hai'an Petrochemical Plant.
Cocamidopropyl propyl amide hydroxy sulfo lycine, liquid, Suzhou Yuan Tairun Chemical Co., Ltd..
Alkyl amidopropyldimethyl amine oxide, liquid, Linyi Lv Sen Chemical Co., Ltd..
Mass percent (powder) composition of wet mixing mortar additive described in embodiment 1-6 is as shown in table 1.
The mass percentage composition of 1 embodiment 1-6 wet mixing mortar additive of table
Note 1: water-soluble polysaccharide used in embodiment 1,4 is guar hydroxypropyltrimonium ammonium chloride.
Note 2: defoaming agent used in embodiment 3,5 is perfluoro octyl sulfonic acid tetraethyl amine.
Note 3: 1 retarder of embodiment is that the mass ratio of white sugar, sodium gluconate and hydroxy ethylene diphosphonic acid is 2:3:1's
Mixture；3 retarder of embodiment is the mixing that the mass ratio of white sugar, sodium gluconate and hydroxy ethylene diphosphonic acid is 4:2:1
Object；6 retarder of embodiment is the mixture that the mass ratio of white sugar, sodium gluconate and hydroxy ethylene diphosphonic acid is 5:1:1.
Note 4: stabilizer used in embodiment 1 is alkyl amidopropyldimethyl amine oxide；Stabilizer used in embodiment 3 is coconut palm
Oleamide hydroxysultaine；Stabilizer used in embodiment 5 is alkyl amidopropyldimethyl amine oxide and coconut oleoyl amine
Hydroxysultaine mass ratio is the mixture of 1:1.
The mortar mix ratio of following Application Example 1-3 is shown in Table 2.Wherein, cement is 42.5 grades of ordinary portland cements, river
The production of Nan Tongli Cement Group；Flyash is second-level ash, the production of Henan Xinxiang Thermal Power Plant；Middle sand, fineness modulus Mx are 2.3-
2.5, sand maximum particle diameter is no more than 4.75mm, and water is clean underground water.Units/kg/m3。
2 mortar mix ratio of table
Remarks: sand in cement mortar ratio is surface drying sand, if containing moisture, when production should deduct surface moisture in sand.
The fine-tuning 10-20kg/m of mortar water consumption3, make consistency of mortar factory in 70-90mm.Since factory wet mixing mortar is transported in mixer truck
It during defeated, can constantly mix slowly, when the consistency of mortar can be transported with stirring when bringing extra air into, therefore arriving construction site
Between extension slightly increase 10-20mm.
Application Example 1
According to premixing mortar standard GB/T/T25181-2010, building mortar basic performance tests method standard JGJ/
T70-2009 and premixing mortar application technology regulation JGJ/T223-2010, gained additive of the embodiment of the present invention are diluted to 10%
Concentration, according to 10.5kg/m3Volume, commercially available wet mixing mortar additive liquid product (including the water-retaining admixture+solidifying as control
Tie time adjustment agent), volume is also 10.5kg/m3, wet mixing mortar is tested for the property.Testing result is shown in Table 3.
3 wet mixing mortar of table is tested for the property result
Application Example 2
According to premixing mortar standard GB/T/T25181-2010, building mortar basic performance tests method standard JGJ/
T70-2009 and premixing mortar application technology regulation JGJ/T223-2010, additive of the present invention is according to 14kg/m3Volume, as
The commercially available wet mixing mortar additive liquid product (including water-retaining admixture+setting time regulator) of control, volume 14kg/m3,
Test performance is carried out to wet mixing mortar.Testing result is shown in Table 4.
4 wet mixing mortar of table is tested for the property result
Application Example 3
According to premixing mortar standard GB/T/T25181-2010, building mortar basic performance tests method standard JGJ/
T70-2009 and premixing mortar application technology regulation JGJ/T223-2010, additive of the present invention is according to 17.5kg/m3Volume is made
For the commercially available wet mixing mortar additive liquid product (including water-retaining admixture+setting time regulator) of control, volume 17.5kg/
m3, test performance is carried out to wet mixing mortar.Testing result is shown in Table 5.
5 wet mixing mortar of table is tested for the property result
By above data, it can also be seen that, wet mixing mortar additive of the present invention has preferable performance, can satisfy work
The needs of Cheng Jianshe.Due to being singly to mix additive, use is very easy, it is only necessary to which powder additive is diluted to 10% or so
Automatic gauge can be realized in aqueous solution, securely and reliably, uses simplicity.
Claims (9)
1. a kind of wet mixing mortar additive, each component mass percentage composition are as follows: 2- acrylamide-2-methyl propane sulfonic sodium
5%-15%, Arabic gum 10%-20%, acrylic acid and acrylate copolymer 3%-5%, water-soluble polysaccharide 2%-5%, gather
Ethylene oxide (PEO) 3%-10%, xanthan gum 3%-8%, retarder 5%-20%, defoaming agent 0.1%-0.3%, stabilizer
0.05%-0.1%, surplus are maltodextrin.
2. wet mixing mortar additive according to claim 1, which is characterized in that the water-soluble polysaccharide is guar gum hydroxypropyl
Base trimethyl ammonium chloride.
3. wet mixing mortar additive according to claim 1, which is characterized in that the retarder is white sugar, molasses, lemon
At least one of sour sodium, sodium gluconate, hydroxy ethylene diphosphonic acid.
4. wet mixing mortar additive according to claim 1, which is characterized in that the defoaming agent is organosiloxane defoaming
One of agent, perfluoro octyl sulfonic acid tetraethyl amine.
5. wet mixing mortar additive according to claim 1, which is characterized in that the stabilizer is cocamidopropyl propyl amide hydroxyl
One or both of sulfobetaines, alkyl amidopropyldimethyl amine oxide.
6. any wet mixing mortar additive of claim 1-5, which is characterized in that the preparation method of its solution includes following
Step: by cosolvent Tween-80 and water (1-2) in mass ratio: 100 are uniformly mixed, and are slowly stirred, and when being heated to 60-80 DEG C, add
Enter above-mentioned wet mixing mortar additive (powder), stir evenly, is down to room temperature to get the additional agent solution of the wet mixing mortar.
7. the preparation method of the additional agent solution of wet mixing mortar according to claim 6, which is characterized in that above-mentioned wet mixing mortar
The concentration of additional agent solution is 5%-15%.
8. the preparation method of the additional agent solution of wet mixing mortar according to claim 6, which is characterized in that in above-mentioned solution
In process for preparation, the polymerization inhibitor for accounting for the 0.01%-0.2% of wet mixing mortar additive total weight is added.
9. the preparation method of the additional agent solution of wet mixing mortar according to claim 8, which is characterized in that the polymerization inhibitor is
1,4-benzoquinone.
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| CN201810526144.9A CN110407508A (en) | 2018-05-29 | 2018-05-29 | A kind of wet mixing mortar additive |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111187026A (en) * | 2020-01-14 | 2020-05-22 | 云南森博混凝土外加剂有限公司 | Machine-made sand wet-mixed mortar additive and preparation method thereof |
| CN113735543A (en) * | 2021-08-26 | 2021-12-03 | 苏州弗克技术股份有限公司 | Lightweight plastering gypsum mortar and preparation method thereof |
| CN113955966A (en) * | 2021-12-10 | 2022-01-21 | 广东龙湖科技股份有限公司 | Multifunctional auxiliary agent for mortar, preparation method and gypsum-based light plastering mortar composition |
| CN113955967A (en) * | 2021-12-03 | 2022-01-21 | 山西科腾环保新材料股份有限公司 | Nano tackifying additive and preparation method thereof |
| CN115353319A (en) * | 2022-07-05 | 2022-11-18 | 湖南中岩建材科技有限公司 | Water-retaining agent and preparation method and application thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111187026A (en) * | 2020-01-14 | 2020-05-22 | 云南森博混凝土外加剂有限公司 | Machine-made sand wet-mixed mortar additive and preparation method thereof |
| CN113735543A (en) * | 2021-08-26 | 2021-12-03 | 苏州弗克技术股份有限公司 | Lightweight plastering gypsum mortar and preparation method thereof |
| CN113955967A (en) * | 2021-12-03 | 2022-01-21 | 山西科腾环保新材料股份有限公司 | Nano tackifying additive and preparation method thereof |
| CN113955966A (en) * | 2021-12-10 | 2022-01-21 | 广东龙湖科技股份有限公司 | Multifunctional auxiliary agent for mortar, preparation method and gypsum-based light plastering mortar composition |
| CN115353319A (en) * | 2022-07-05 | 2022-11-18 | 湖南中岩建材科技有限公司 | Water-retaining agent and preparation method and application thereof |
| CN115353319B (en) * | 2022-07-05 | 2023-10-13 | 湖南中岩建材科技有限公司 | Water-retaining agent and preparation method and application thereof |
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