CN108341650A - A kind of novel dry-mixed plastering mortar and its application - Google Patents

A kind of novel dry-mixed plastering mortar and its application Download PDF

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Publication number
CN108341650A
CN108341650A CN201810169944.XA CN201810169944A CN108341650A CN 108341650 A CN108341650 A CN 108341650A CN 201810169944 A CN201810169944 A CN 201810169944A CN 108341650 A CN108341650 A CN 108341650A
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China
Prior art keywords
parts
plastering mortar
mixed
water
dry
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Chinese (zh)
Inventor
王雨利
贺航
何小芳
史才军
管学茂
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Henan University of Technology
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Henan University of Technology
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Priority to CN201810169944.XA priority Critical patent/CN108341650A/en
Publication of CN108341650A publication Critical patent/CN108341650A/en
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    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/14Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
    • C04B28/142Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements containing synthetic or waste calcium sulfate cements
    • C04B28/144Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements containing synthetic or waste calcium sulfate cements the synthetic calcium sulfate being a flue gas desulfurization product
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/20Mortars, concrete or artificial stone characterised by specific physical values for the density
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/50Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength

Abstract

The present invention provides a kind of novel dry-mixed plastering mortar, counts in parts by weight, the plastering mortar is formed by the following raw material component is dry-mixed:100 150 parts of cement;800 850 parts of sand;30 70 parts of flyash;79 parts of gypsum;0.2 0.6 parts of cellulose ether;1 14 parts of white lime;0.1 1 parts of aluminum sulfate;0.1 0.3 parts of air entraining agent;15 parts of water-reducing agent.In half from fluidised form, no bleeding can directly be built and smear construction wall dry-mixed plastering mortar of the present invention;With high-water performance, water retention >=90%;With good intensity, 7d compression strength >=5.1MPa, 28d compression strength >=10.3MPa, after the 1d that constructs can function and effect, ensure mortar and wall tight bond.Without cracking, picking, hollowing phenomenon.The levelling effect of dry-mixed plastering mortar of the present invention is good, and intensity is high, has excellent water-retaining property and crack resistance, ungauged regions are at low cost, harmless, radiationless.

Description

A kind of novel dry-mixed plastering mortar and its application
Technical field
The present invention relates to special construction material technical field, it is specifically related to a kind of novel dry-mixed plastering mortar and its answers With.
Background technology
Dry-mixed plastering mortar is a kind of cement base engineering material with certain fluidity, high-moisture-retention, has water-retaining property The features such as height, caking property is good.It is mainly used in concrete, air entrained concrete, brick mortar wall base plaster leveling, repairing etc. Engineering.
With the quickening of Development of China's Urbanization, requirement of the people to house quality is increasingly increased, and construction industry is grown rapidly, building Dosage of the mortar in engineering increases year by year, and performance requirement is also higher and higher.And existing dry-mixed plastering mortar generally existing is solidifying Tie the features such as time is very fast, and water-retaining property is unstable, and cost is higher.And plastering mortar is susceptible to bad adhesion when in use, with Wall base bonds insecure, peeling picking, hollowing, the technological deficiencies such as crackle.
Therefore, be badly in need of to the performance of existing plastering mortar be improved with it is perfect, develop dry-mixed the smearing of novel performance stabilization Lime and brick is imperative, and technical support is provided for more preferable widely application.
Invention content
It is above-mentioned insufficient in the prior art the purpose of the present invention is overcoming;It proposes a kind of novel dry-mixed plastering mortar and its answers With.
To achieve the goals above, the present invention provides the following technical solutions:
A kind of novel dry-mixed plastering mortar, is counted in parts by weight, and the plastering mortar is formed by the following raw material component is dry-mixed: 100-150 parts of cement;800-850 parts of sand;30-70 parts of flyash;7-9 parts of gypsum;0.2-0.6 parts of cellulose ether;White lime 1- 14 parts;0.1-1 parts of aluminum sulfate;0.1-0.3 parts of air entraining agent;1-5 parts of water-reducing agent.
Novel dry-mixed plastering mortar as described above, it is preferable that the cement is portland cement, and strength grade is 42.5 Grade or more.
Novel dry-mixed plastering mortar as described above, it is preferable that the sand is the Machine-made Sand mistake of fineness modulus 2.6-2.9 4.75mm sieve gained, content of stone powder 10 ± 1%.
Novel dry-mixed plastering mortar as described above, it is preferable that the grade of the flyash is II grades or more.
Novel dry-mixed plastering mortar as described above, it is preferable that the gypsum is industrially desulfurized gypsum, effective content >= 93%.
Novel dry-mixed plastering mortar as described above, it is preferable that the cellulose ether is hydroxypropyl methyl cellulose, molecular weight 20w。
Novel dry-mixed plastering mortar as described above, it is preferable that the white lime is industrial Ca (OH)2, effective content >= 90%.
Novel dry-mixed plastering mortar as described above, it is preferable that the aluminum sulfate is powdered commercial sulphuric acid aluminium, Al2O3≥ 15.6%.
Novel dry-mixed plastering mortar as described above, it is preferable that the air entraining agent is dodecyl sodium sulfate, alkyl benzene sulphonate One or more combinations in salt, triterpene soaps and natural nonionic Tea Saponin;Preferably, the air entraining agent is dodecyl Sodium sulfonate;Preferably, the water-reducing agent is high performance water reducing agent of polyocarboxy acid, water-reducing rate >=30%.
A kind of application of novel dry-mixed plastering mortar as described above, when the plastering mortar is applied in engineering, by institute All material components of plastering mortar are stated according to proportioning difference Weighing, all material components after then weighing are put into mixed Be stirred in material machine it is dry-mixed uniformly, obtain mixture, then in mixture be added water stir evenly, you can use;Water is added Amount be used plastering mortar mixture weight 16-18.5%.
Compared with the immediate prior art, technical solution provided by the invention has the advantages that:
1, primary raw material of the invention is construction material class versatile material, at low cost, is easily obtained, and industry metaplasia is suitble to Production.
2, in half from fluidised form, no bleeding can directly be built and smear construction wall dry-mixed plastering mortar of the present invention;With high-moisture-retention Can, water retention >=90%;With good intensity, 7d compression strength >=5.1MPa, 28d compression strength >=10.3MPa, construct 1d After can function and effect, ensure mortar and wall tight bond.Without cracking, picking, hollowing phenomenon.The dry-mixed plastering sand of the present invention It is good to starch levelling effect, intensity is high, has excellent water-retaining property and crack resistance, ungauged regions are at low cost, harmless, radiationless.
Specific implementation mode
The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described implementation Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is general The every other embodiment that logical technical staff is obtained, shall fall within the protection scope of the present invention.
Specific embodiments of the present invention provide the novel dry-mixed decorative mortar of one kind and its application.In the novel dry-mixed of the present invention Plastering mortar is counted in parts by weight, and plastering mortar is formed by the following raw material component is dry-mixed:100-150 parts of cement (such as 105 parts, 110 parts, 115 parts, 120 parts, 125 parts, 130 parts, 135 parts, 140 parts, 145 parts, 148 parts);800-850 parts of sand (such as 805 parts, 810 parts, 815 parts, 820 parts, 825 parts, 830 parts, 835 parts, 840 parts, 845 parts, 848 parts);30-70 parts of flyash (such as 35 Part, 40 parts, 45 parts, 50 parts, 55 parts, 60 parts, 61 parts, 64 parts, 66 parts, 68 parts);7-9 parts of gypsum (such as 7.2 parts, 7.4 parts, 7.6 parts, 7.8 parts, 8 parts, 8.2 parts, 8.4 parts, 8.8 parts, 8.6 parts, 8.9 parts);0.2-0.6 parts of cellulose ether (such as 0.25 part, 0.3 part, 0.33 part, 0.37 part, 0.4 part, 0.43 part, 0.45 part, 0.5 part, 0.55 part, 0.58 part);1-14 parts of (examples of white lime Such as 1 part, 2 parts, 3 parts, 4 parts, 5 parts, 6 parts, 7 parts, 8 parts, 9 parts, 10 parts, 11 parts, 12 parts, 13 parts);0.1-1 parts of aluminum sulfate (such as 0.2 part, 0.3 part, 0.4 part, 0.5 part, 0.6 part, 0.7 part, 0.8 part, 0.9 part);0.1-0.3 parts of air entraining agent (such as 0.12 part, 0.14 part, 0.16 part, 0.18 part, 0.2 part, 0.22 part, 0.24 part, 0.26 part, 0.28 part, 0.29 part);1-5 parts of (examples of water-reducing agent Such as 1.5 parts, 2 parts, 2.5 parts, 3 parts, 3.5 parts, 4 parts, 4.5 parts, 4.8 parts).
In a specific embodiment of the present invention, cement is portland cement, and strength grade is 42.5 grades or more, such as The grade of the portland cement is 42.5R, 52.5,52.5R, 62.5,62.5R.
Further preferably, sand be fineness modulus 2.6-2.9 (such as 2.64 parts, 2.68 parts, 2.7 parts, 2.75 parts, 2.78 parts, 2.8 parts, 2.85 parts, 2.89 parts) Machine-made Sand cross 4.75mm sieve gained, content of stone powder 10 ± 1%.
Further preferably, the grade of flyash is II grades or more.
Further preferably, gypsum is industrially desulfurized gypsum, effective content >=93%.
Cellulose ether is hydroxypropyl methyl cellulose (Hydroxypropyl methyl in specific embodiments of the present invention Cellulose, abbreviation HPMC), molecular weight 20w.White lime is industrial Ca (OH)2, effective content >=90%.Aluminum sulfate is powder Last shape commercial sulphuric acid aluminium, Al2O3>=15.6%.
Air entraining agent is dodecyl sodium sulfate, alkylbenzene sulfonate, triterpene soaps and day in specific embodiments of the present invention One or more combinations in right nonionic Tea Saponin;Preferably, the air entraining agent in specific embodiments of the present invention is 12 Sodium alkyl sulfonate.Preferably, water-reducing agent is high performance water reducing agent of polyocarboxy acid or naphthalene water reducer, naphthalene water reducer water-reducing rate 20- 30%, high performance water reducing agent of polyocarboxy acid water-reducing rate >=30%.More preferably, water-reducing agent is high performance water reducing agent of polyocarboxy acid, diminishing Rate >=30%
In addition, specific embodiments of the present invention also provide a kind of application of novel dry-mixed plastering mortar, plastering mortar application When in engineering, by all material components of plastering mortar according to proportioning difference Weighing, all originals after then weighing Material component be put into batch mixer be stirred it is dry-mixed uniformly, obtain mixture, then in mixture be added water stir evenly, you can It uses.The amount that water is added is the 16-18.5% of used plastering mortar mixture weight.
The possessed properties of each material component defined in aforementioned present invention may be used on following reality It applies in example.
Embodiment 1
A kind of novel dry-mixed plastering mortar, is counted in parts by weight, and plastering mortar is formed by the following raw material component is dry-mixed:
1) 130 parts of cement;Cement is portland cement, and strength grade is 42.5 grades.
2) 830 parts of sand;Sand is that the Machine-made Sand of fineness modulus 2.7 crosses 4.75mm sieve gained, content of stone powder 10.5%.
3) 50 parts of flyash;Flyash is II grades.
4) 7 parts of gypsum;Gypsum is industrially desulfurized gypsum, effective content >=93%.
5) 0.4 part of cellulose ether;Cellulose ether is HPMC, molecular weight 20w.
6) 3 parts of white lime;White lime is industrial Ca (OH)2, effective content >=90%.
7) 0.3 part of aluminum sulfate;Aluminum sulfate is powdered commercial sulphuric acid aluminium, Al2O3>=15.6%.
8) 0.2 part of air entraining agent;Air entraining agent is dodecyl sodium sulfate.
9) 1.5 parts of water-reducing agent;Water-reducing agent is high performance water reducing agent of polyocarboxy acid, water-reducing rate >=30%.
When plastering mortar is applied in engineering, all material components of plastering mortar are distinguished into Weighing according to proportioning, Then all material components after weighing be put into batch mixer be stirred it is dry-mixed uniformly, mixture is obtained, then in mixture Middle addition water stirs evenly, you can uses.The amount that water is added is the 17% of used plastering mortar mixture weight.
Embodiment 2
A kind of novel dry-mixed plastering mortar, is counted in parts by weight, and plastering mortar is formed by the following raw material component is dry-mixed:
1) 130 parts of cement;Cement is portland cement, and strength grade is 42.5 grades.
2) 830 parts of sand;Sand is that the Machine-made Sand of fineness modulus 2.7 crosses 4.75mm sieve gained, content of stone powder 10.5%.
3) 50 parts of flyash;Flyash is II grades.
4) 7 parts of gypsum;Gypsum is industrially desulfurized gypsum, effective content >=93%.
5) 0.4 part of cellulose ether;Cellulose ether is HPMC, molecular weight 20w.
6) 6 parts of white lime;White lime is industrial Ca (OH)2, effective content >=90%.
7) 0.6 part of aluminum sulfate;Aluminum sulfate is powdered commercial sulphuric acid aluminium, Al2O3>=15.6%.
8) 0.2 part of air entraining agent;Air entraining agent is dodecyl sodium sulfate.
9) 1.5 parts of water-reducing agent;Water-reducing agent is high performance water reducing agent of polyocarboxy acid, water-reducing rate >=30%.
When plastering mortar is applied in engineering, all material components of plastering mortar are distinguished into Weighing according to proportioning, Then all material components after weighing be put into batch mixer be stirred it is dry-mixed uniformly, mixture is obtained, then in mixture Middle addition water stirs evenly, you can uses.The amount that water is added is the 17% of used plastering mortar mixture weight.
Embodiment 3
A kind of novel dry-mixed plastering mortar, is counted in parts by weight, and plastering mortar is formed by the following raw material component is dry-mixed:
1) 130 parts of cement;Cement is portland cement, and strength grade is 42.5 grades.
2) 830 parts of sand;Sand is that the Machine-made Sand of fineness modulus 2.7 crosses 4.75mm sieve gained, content of stone powder 10.5%.
3) 50 parts of flyash;Flyash is II grades.
4) 7 parts of gypsum;Gypsum is industrially desulfurized gypsum, effective content >=93%.
5) 0.4 part of cellulose ether;Cellulose ether is HPMC, molecular weight 20w.
6) 9 parts of white lime;White lime is industrial Ca (OH)2, effective content >=90%.
7) 0.9 part of aluminum sulfate;Aluminum sulfate is powdered commercial sulphuric acid aluminium, Al2O3>=15.6%.
8) 0.2 part of air entraining agent;Air entraining agent is dodecyl sodium sulfate.
9) 1.5 parts of water-reducing agent;Water-reducing agent is high performance water reducing agent of polyocarboxy acid, water-reducing rate >=30%.
When plastering mortar is applied in engineering, all material components of plastering mortar are distinguished into Weighing according to proportioning, Then all material components after weighing be put into batch mixer be stirred it is dry-mixed uniformly, mixture is obtained, then in mixture Middle addition water stirs evenly, you can uses.The amount that water is added is the 17% of used plastering mortar mixture weight.
Embodiment 4
A kind of novel dry-mixed plastering mortar, is counted in parts by weight, and plastering mortar is formed by the following raw material component is dry-mixed:
1) 130 parts of cement;Cement is portland cement, and strength grade is 42.5 grades.
2) 830 parts of sand;Sand is that the Machine-made Sand of fineness modulus 2.7 crosses 4.75mm sieve gained, content of stone powder 10.5%.
3) 50 parts of flyash;Flyash is II grades.
4) 7 parts of gypsum;Gypsum is industrially desulfurized gypsum, effective content >=93%.
5) 0.4 part of cellulose ether;Cellulose ether is HPMC, molecular weight 20w.
6) 6 parts of white lime;White lime is industrial Ca (OH)2, effective content >=90%.
7) 0.6 part of aluminum sulfate;Aluminum sulfate is powdered commercial sulphuric acid aluminium, Al2O3>=15.6%.
8) 0.2 part of air entraining agent;Air entraining agent is dodecyl sodium sulfate.
9) 1.5 parts of water-reducing agent;Water-reducing agent is high performance water reducing agent of polyocarboxy acid, water-reducing rate >=30%.
When plastering mortar is applied in engineering, all material components of plastering mortar are distinguished into Weighing according to proportioning, Then all material components after weighing be put into batch mixer be stirred it is dry-mixed uniformly, mixture is obtained, then in mixture Middle addition water stirs evenly, you can uses.The amount that water is added is the 15.5% of used plastering mortar mixture weight.
Embodiment 5
A kind of novel dry-mixed plastering mortar, is counted in parts by weight, and plastering mortar is formed by the following raw material component is dry-mixed:
1) 130 parts of cement;Cement is portland cement, and strength grade is 42.5 grades.
2) 830 parts of sand;Sand is that the Machine-made Sand of fineness modulus 2.7 crosses 4.75mm sieve gained, content of stone powder 10.5%.
3) 50 parts of flyash;Flyash is II grades.
4) 7 parts of gypsum;Gypsum is industrially desulfurized gypsum, effective content >=93%.
5) 0.4 part of cellulose ether;Cellulose ether is HPMC, molecular weight 20w.
6) 6 parts of white lime;White lime is industrial Ca (OH)2, effective content >=90%.
7) 0.6 part of aluminum sulfate;Aluminum sulfate is powdered commercial sulphuric acid aluminium, Al2O3>=15.6%.
8) 0.2 part of air entraining agent;Air entraining agent is dodecyl sodium sulfate and alkylbenzene sulfonate.
9) 1.5 parts of water-reducing agent;Water-reducing agent is high performance water reducing agent of polyocarboxy acid, water-reducing rate >=30%.
When plastering mortar is applied in engineering, all material components of plastering mortar are distinguished into Weighing according to proportioning, Then all material components after weighing be put into batch mixer be stirred it is dry-mixed uniformly, mixture is obtained, then in mixture Middle addition water stirs evenly, you can uses.The amount that water is added is the 19% of used plastering mortar mixture weight.
Embodiment 6
A kind of novel dry-mixed plastering mortar, is counted in parts by weight, and plastering mortar is formed by the following raw material component is dry-mixed:
1) 130 parts of cement;Cement is portland cement, and strength grade is 42.5 grades.
2) 830 parts of sand;Sand is that the Machine-made Sand of fineness modulus 2.7 crosses 4.75mm sieve gained, content of stone powder 10.5%.
3) 50 parts of flyash;Flyash is I grades.
4) 7 parts of gypsum;Gypsum is industrially desulfurized gypsum, effective content >=93%.
5) 0.4 part of cellulose ether;Cellulose ether is HPMC, molecular weight 20w.
6) 6 parts of white lime;White lime is industrial Ca (OH)2, effective content >=90%.
7) 0.6 part of aluminum sulfate;Aluminum sulfate is powdered commercial sulphuric acid aluminium, Al2O3>=15.6%.
8) 0.2 part of air entraining agent;Air entraining agent is natural nonionic Tea Saponin.
9) 1.5 parts of water-reducing agent;Water-reducing agent is high performance water reducing agent of polyocarboxy acid, water-reducing rate >=30%.
When plastering mortar is applied in engineering, all material components of plastering mortar are distinguished into Weighing according to proportioning, Then all material components after weighing be put into batch mixer be stirred it is dry-mixed uniformly, mixture is obtained, then in mixture Middle addition water stirs evenly, you can uses.The amount that water is added is the 17% of used plastering mortar mixture weight.
Embodiment 7
A kind of novel dry-mixed plastering mortar, is counted in parts by weight, and plastering mortar is formed by the following raw material component is dry-mixed:
1) 130 parts of cement;Cement is portland cement, and strength grade is 42.5 grades.
2) 830 parts of sand;Sand is that the Machine-made Sand of fineness modulus 2.7 crosses 4.75mm sieve gained, content of stone powder 10.5%.
3) 50 parts of flyash;Flyash is II grades.
4) 7 parts of gypsum;Gypsum is industrially desulfurized gypsum, effective content >=93%.
5) 0.4 part of cellulose ether;Cellulose ether is HPMC, molecular weight 20w.
6) 6 parts of white lime;White lime is industrial Ca (OH)2, effective content >=90%.
7) 0.6 part of aluminum sulfate;Aluminum sulfate is powdered commercial sulphuric acid aluminium, Al2O3>=15.6%.
8) 0.2 part of air entraining agent;Air entraining agent is dodecyl sodium sulfate.
9) 1.5 parts of water-reducing agent;Water-reducing agent is naphthalene water reducer, water-reducing rate 20-30%.
When plastering mortar is applied in engineering, all material components of plastering mortar are distinguished into Weighing according to proportioning, Then all material components after weighing be put into batch mixer be stirred it is dry-mixed uniformly, mixture is obtained, then in mixture Middle addition water stirs evenly, you can uses.The amount that water is added is the 17% of used plastering mortar mixture weight.
Embodiment 8
A kind of novel dry-mixed plastering mortar, is counted in parts by weight, and plastering mortar is formed by the following raw material component is dry-mixed:
1) 130 parts of cement;Cement is portland cement, and strength grade is 42.5 grades.
2) 830 parts of sand;Sand is that the Machine-made Sand of fineness modulus 2.7 crosses 4.75mm sieve gained, content of stone powder 10.5%.
3) 50 parts of flyash;Flyash is II grades.
4) 7 parts of gypsum;Gypsum is industrially desulfurized gypsum, effective content >=93%.
5) 0.4 part of cellulose ether;Cellulose ether is HPMC, molecular weight 8000.
6) 6 parts of white lime;White lime is industrial Ca (OH)2, effective content >=90%.
7) 0.6 part of aluminum sulfate;Aluminum sulfate is powdered commercial sulphuric acid aluminium, Al2O3>=15.6%.
8) 0.2 part of air entraining agent;Air entraining agent is dodecyl sodium sulfate.
9) 1.5 parts of water-reducing agent;Water-reducing agent is high performance water reducing agent of polyocarboxy acid, water-reducing rate >=30%.
When plastering mortar is applied in engineering, all material components of plastering mortar are distinguished into Weighing according to proportioning, Then all material components after weighing be put into batch mixer be stirred it is dry-mixed uniformly, mixture is obtained, then in mixture Middle addition water stirs evenly, you can uses.The amount that water is added is the 17% of used plastering mortar mixture weight.
Comparative example
Current dry-mixed plastering mortar is counted in parts by weight by taking Henan factory product as an example, and plastering mortar is by the following raw material group Part is dry-mixed to be formed:
1) cement 100-150 parts;Cement is portland cement, and strength grade is 42.5 grades.
2) sand 800-850 parts;Sand is that the Machine-made Sand of fineness modulus 2.9 crosses 4.75mm sieve gained, content of stone powder 11%.
3) flyash 50-80 parts;Flyash is II grades.
4) gypsum 7-9 parts;Gypsum is industrially desulfurized gypsum, effective content >=93%.
5) cellulose ether 0.35-0.9 parts;Cellulose ether is hydroxypropyl methyl cellulose ether (HPMC), molecular weight 8000.
6) air entraining agent 0.1-0.2 parts;Air entraining agent is calcium lignosulfonate.
7) water-reducing agent 2-7 parts;Water-reducing agent is high performance water reducing agent of polyocarboxy acid, water-reducing rate >=35%.
When plastering mortar is applied in engineering, all material components of plastering mortar are distinguished into Weighing according to proportioning, Then all material components after weighing be put into batch mixer be stirred it is dry-mixed uniformly, mixture is obtained, then in mixture Middle addition water stirs evenly, you can uses.The amount that water is added is the 19.4% of used plastering mortar mixture weight.
The properties of prepared plastering mortar are listed in the table below 1 in above-mentioned each embodiment.
1 each embodiment performance indicator inspection result of table
In conclusion specific embodiments of the present invention have following advantageous effects:
Need to only water be added to stir when dry-mixed plastering mortar application provided by the invention, in partly from fluidised form, no bleeding, initial consistency Consistency >=85mm after >=90mm, 2h, can directly build and smear construction wall;With high-water performance, water retention >=90%;With good Intensity, 7d compression strength >=5.1MPa, 28d compression strength >=10.3MPa, construct 1d after can function and effect, ensure mortar With wall tight bond.It can be used for the engineerings such as concrete, air entrained concrete, brick mortar wall base plaster leveling, repairing.Nothing Cracking, picking, hollowing phenomenon.The levelling effect of dry-mixed plastering mortar of the present invention is good, and intensity is high, has excellent water-retaining property and resists Fragility, ungauged regions are at low cost, harmless, radiationless.The primary raw material of the present invention is construction material class versatile material, cost It is low, it is easily obtained, is suitble to industrialized production.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention God and principle within, any modification, equivalent replacement, improvement and so on, accompanying claims protection domain of the present invention it It is interior.

Claims (10)

1. a kind of novel dry-mixed plastering mortar, which is characterized in that count in parts by weight, the plastering mortar is by the following raw material component It is dry-mixed to form:100-150 parts of cement;800-850 parts of sand;30-70 parts of flyash;7-9 parts of gypsum;0.2-0.6 parts of cellulose ether; 1-14 parts of white lime;0.1-1 parts of aluminum sulfate;0.1-0.3 parts of air entraining agent;1-5 parts of water-reducing agent.
2. novel dry-mixed plastering mortar as described in claim 1, which is characterized in that the cement is portland cement, and strong It is 42.5 grades or more to spend grade.
3. novel dry-mixed plastering mortar as described in claim 1, which is characterized in that the sand is fineness modulus 2.6-2.9's Machine-made Sand crosses 4.75mm sieve gained, content of stone powder 10 ± 1%.
4. novel dry-mixed plastering mortar as described in claim 1, which is characterized in that the grade of the flyash be II grades and with On.
5. novel dry-mixed plastering mortar as described in claim 1, which is characterized in that the gypsum is industrially desulfurized gypsum, is had Imitate content >=93%.
6. novel dry-mixed plastering mortar as described in claim 1, which is characterized in that the cellulose ether is that hydroxypropyl methyl is fine Dimension element, molecular weight 20w.
7. novel dry-mixed plastering mortar as described in claim 1, which is characterized in that the white lime is industrial Ca (OH)2, Effective content >=90%.
8. novel dry-mixed plastering mortar as described in claim 1, which is characterized in that the aluminum sulfate is powdered industrial sulphur Sour aluminium, Al2O3>=15.6%.
9. novel dry-mixed plastering mortar as described in claim 1, which is characterized in that the air entraining agent is dodecyl sodium sulfonate One or more combinations in sodium, alkylbenzene sulfonate, triterpene soaps and natural nonionic Tea Saponin;Preferably, described to draw Gas agent is dodecyl sodium sulfate;
Preferably, the water-reducing agent is high performance water reducing agent of polyocarboxy acid, water-reducing rate >=30%.
10. a kind of application of such as novel dry-mixed plastering mortar of claim 1-9 any one of them, which is characterized in that
When the plastering mortar is applied in engineering, by all material components of the plastering mortar according to proportioning difference poidometer Amount, all material components after then weighing be put into batch mixer be stirred it is dry-mixed uniformly, obtain mixture, then mixing Water is added in material to stir evenly, you can use;
The amount that water is added is the 16-18.5% of used plastering mortar mixture weight.
CN201810169944.XA 2018-02-12 2018-02-12 A kind of novel dry-mixed plastering mortar and its application Pending CN108341650A (en)

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CN111087200A (en) * 2019-06-24 2020-05-01 广州六润建材有限公司 Mortar and preparation method thereof
CN111362654A (en) * 2020-03-19 2020-07-03 河南锦亿建材有限公司 Dry-mixed mortar for stair treads and preparation method thereof
CN111362653A (en) * 2020-03-19 2020-07-03 河南锦亿建材有限公司 Green and environment-friendly plastering dry-mixed mortar and preparation method thereof
CN112551999A (en) * 2020-12-04 2021-03-26 苏州娄城新材料科技有限公司 Special dry-mixed mortar of aggregate-free fly ash
CN113387657A (en) * 2021-07-13 2021-09-14 河南融之科建材有限公司 High-strength anti-cracking masonry dry-mixed mortar and production process thereof

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CN112551999A (en) * 2020-12-04 2021-03-26 苏州娄城新材料科技有限公司 Special dry-mixed mortar of aggregate-free fly ash
CN113387657A (en) * 2021-07-13 2021-09-14 河南融之科建材有限公司 High-strength anti-cracking masonry dry-mixed mortar and production process thereof

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