CN107056214B - A kind of fluorite cream base mending mortar - Google Patents
A kind of fluorite cream base mending mortar Download PDFInfo
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- CN107056214B CN107056214B CN201710373904.2A CN201710373904A CN107056214B CN 107056214 B CN107056214 B CN 107056214B CN 201710373904 A CN201710373904 A CN 201710373904A CN 107056214 B CN107056214 B CN 107056214B
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- mending mortar
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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
- C04B28/14—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 calcium sulfate cements
- C04B28/142—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 calcium sulfate cements containing synthetic or waste calcium sulfate 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00017—Aspects relating to the protection of the environment
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a kind of fluorite cream base mending mortars, belong to building material technical field.The fluorite cream base mending mortar includes major ingredient and additive, and in terms of mass fraction, the major ingredient includes following component: 15~80 parts of fluorgypsum, gathers materials 20~75 parts at 1~10 part of active mineral admixture；The additive includes following component: 0.5~3 part of exciting agent, 0.5~3 part of adjustable solidification agent, 0.1~1 part of water-reducing agent, 0.05~0.5 part of water-retaining admixture, 0.1~1 part of Redispersable latex agent, 0.05~0.5 part of waterproofing agent.The fluorite cream base mending mortar while fast and safely exciting II type anhydrous gypsum, increases the alumino-silicate three dimensional network of some densifications using II type anhydrous gypsum, adjustable solidification agent and active mineral admixture combination in gypsum crystal.While remaining the advantages that gypsum volume stability is good, tensile bond strength is high, and the shortcomings that overcome low common building gypsum material intensity, poor water resistance.It uses the waste residue of fluorine chemical industry as main raw material(s), not only environmental protection and waste utilization, but also reduces the production cost of construction material.
Description
Technical field
The present invention relates to building material technical fields, particularly relate to a kind of fluorite cream base mending mortar.
Background technique
Fluorgypsum is the by-product during sulfuric acid solution fluorite production hydrofluoric acid, belongs to II type anhydrous gypsum, is in strong acid
Property annual emissions are more than 3,000,000 tons.Currently, most domestic fluorgypsum is just directly stored up as solid waste, do not only take up
Land resource, and pollute environment.In today that natural resources increasingly consumes, being produced using discarded fluorgypsum has high add
The wall-surface patching mortar of value, can not only make waste resource be fully used, but also can protect soil and groundwater environment.
Major part is gone along with sb. to guard him using light materials such as steam-pressing aero-concrete, shale bricks, with floor and beam column in existing house
The deformation that can be generated by air humidity and temperature change between equal components causes surface layer screed cracking occur, fall off.It is existing
Cement base or mix plastering gupsum water-retaining property and adhesion strength it is poor, it is more difficult to the light-weight wall material phase with existing large-scale popularization
Matching, it is easy to the problems such as ash is played on hollowing, cracking and surface occur.Existing common cement mortar is because adhesion strength is low, drying shrinkage
Greatly, it is more difficult to realize disposable repairing, need repeatedly to construct, while increasing difficulty of construction, increase construction cost.It is existing live
Assembly concrete house used by residence industrialization never has suitable splicing seams gap filler.Organic gap filler weatherability
Difference, service life are short, while not fire resisting；And cement mortar is because adhesion strength is low, it is flexible poor and the usage scenario is not achieved
Requirement.The joint filling in existing house is low with used half water base gypsum intensity is repaired, poor water resistance, and use scope is narrow；Cement
The contraction of sill is big, and adhesion strength is low, is easy to appear crack hollowing；And cement mortar need to be filled up repeatedly just when thickness is larger
Effect can be reached.
Summary of the invention
In view of this, being made it is an object of the invention to propose a kind of fluorite cream base mending mortar using discarded fluorgypsum
For substrate, one kind has early strong, rapid hardening, compression strength and adhesion strength are high, volume stability and water resistance are preferable etc. is produced
The mending mortar of feature realizes the comprehensive utilization of solid waste fluorgypsum.
Based on a kind of above-mentioned purpose fluorite cream base mending mortar provided by the invention, including major ingredient and additive, with quality
Number meter, the major ingredient include following component: 15~80 parts of fluorgypsum, 1~10 part of active mineral admixture gather materials 20~75
Part；The additive includes following component: 0.5~3 part of exciting agent, 0.5~3 part of adjustable solidification agent, 0.1~1 part of water-reducing agent, water conservation increase
Thick dose 0.05~0.5 part, 0.1~1 part of Redispersable latex agent, 0.05~0.5 part of waterproofing agent.
A kind of fluorite cream base mending mortar according to the present invention, the fluorgypsum are that sulfuric acid solution Fluorspar Powder produces hydrofluoric acid
When by-product, drying, grinding processing after its adhere to water content < 0.5%, residual acidity content < 0.5%, fineness control
In 200 mesh standard sieve screen over-size < 10%.
A kind of fluorite cream base mending mortar according to the present invention, the active mineral admixture be silicon ash, ground granulated blast furnace slag,
One of portland cement is a variety of.
A kind of fluorite cream base mending mortar according to the present invention, described to gather materials be quartz sand, and fineness is controlled 40~325
Mesh standard sieve.
A kind of fluorite cream base mending mortar according to the present invention, the exciting agent are sodium sulphate, in potassium sulfate, aluminum aluminum sulfate
It is one or more.
A kind of fluorite cream base mending mortar according to the present invention, the adjustable solidification agent are alkaline earth oxide, carbonation
Close one of object or a variety of.
A kind of fluorite cream base mending mortar according to the present invention, the water-reducing agent are that polycarboxylic acids, Melamine and naphthalene system subtract
One of aqua.
A kind of fluorite cream base mending mortar according to the present invention, the water-retaining admixture are polyvinyl alcohol, hydroxymethylpropyl
One of cellulose is a variety of.
A kind of fluorite cream base mending mortar according to the present invention, the waterproofing agent is silicates protective agent, organosilicon is low
One or more of polymers class protective agent, acrylic compounds protective agent, organic fluorinated silicone class protective agent and organic fluorine carbon protective agent.
Fluorgypsum is the by-product that fluorine chemical company sulfuric acid solution Fluorspar Powder produces hydrofluoric acid generation in the present invention.After discharge
Fluorgypsum suitable adjustable solidification agent and active mineral admixture is added, grinding machine grinding, the attached water of the fluorgypsum after grinding is added
Content is lower than 0.5%, and residual acidity content is lower than 0.5%, and fineness control is in 200 mesh screen surpluses less than 10%.Fluorgypsum is institute
The major gelled material for stating fluorite cream base mending mortar, compared with conventional building gypsum, fluorgypsum hydration rate is slow, needs to make
Accelerate its hydration rate with exciting agent and adjustable solidification agent.Its water requirement is small simultaneously, and compression strength and coefficient of softing are more compared with building gypsum
It is excellent.Control fluorgypsum attached water < 0.5% is conducive to grind fluorgypsum, if attached water too high levels will lead to appearance
Ramming material phenomenon, while adhering to dilutional hyponatremia and will lead to fluorgypsum mending mortar and reacting in storage and generate clustering phenomena.Control
Fluorgypsum fineness is in 200 mesh standard sieve screen over-size < 10%, and fluorgypsum particle size is small, and specific surface area is then big, is able to ascend its water
Change the rate of reaction；But too small particle size will increase its water requirement, influence setting time, reduce later strength.Control
Fluorgypsum residual acidity content is lower than 0.5%, and the excessively high effect that will affect exciting agent and adjustable solidification agent of residual acidity content influences to repair sand
The setting time of slurry and physical property.
Active mineral admixture can be reacted with fluorgypsum, exciting agent and adjustable solidification agent etc. in the present invention, in fluorgypsum hardenite
Fine and close silicon aluminate crystal network structure is formed, the mechanical property and coefficient of softing of the fluorite cream base mending mortar are improved,
The anti-alkali phenomenon of the fluorite cream base mending mortar appearance can be prevented by adding suitable active mineral admixture simultaneously.
The main function to gather materials in the present invention is to increase the fluorgypsum as the skeleton of the fluorite cream base mending mortar
The volume stability of base mending mortar, reduces cost.
The main function of exciting agent is to promote the early hydration rate of the fluorite cream base mending mortar and add in the present invention
Quick setting still easily causes the anti-alkali phenomenon of the fluorite cream base mending mortar when exciting agent is added and is more than a certain amount of.
The main function of adjustable solidification agent is the reaction speed for controlling fluorgypsum in the present invention, makes the fluorite cream base mending mortar
Setting time can satisfy construction requirement.
The main function of water-reducing agent is watering quantity when reducing fluorite cream base mending mortar stirring in the present invention, is improved
The performance of the fluorite cream base mending mortar.
The effect of water-retaining admixture mainly promotes the water retention property of the fluorite cream base mending mortar and applies in the present invention
Work performance.
The effect of redispersable latex powder mainly increases the stretch-bonded of the fluorite cream base mending mortar in the present invention
Intensity promotes the adhesion strength and coefficient of softing of material.
The main function of waterproofing agent is the coefficient of softing for improving the fluorite cream base mending mortar, reinforcing material in the present invention
Water resistance.
From the above it can be seen that the advantages of the present invention are:
(1) heretofore described fluorite cream base mending mortar is blended using II type anhydrous gypsum, adjustable solidification agent and active mineral
Material combination increases the alumino-silicate three dimensional network of some densifications while quickly II type anhydrous gypsum of excitation in gypsum crystal.
While remaining the advantages that gypsum volume stability is good, tensile bond strength is high, and overcome common building gypsum material
The shortcomings that intensity is low, poor water resistance.
(2) by adding active mineral admixture and waterproofing agent into the fluorite cream base mending mortar in the present invention,
The coefficient of softing for improving fluorite cream base improves the water resistance of fluorite cream base.
(3) in the present invention by into the fluorite cream base mending mortar adjustable solidification agent, exciting agent and mineral admixture match
Set uses, and has carried out safe excitation to fluorite cream base, avoids the anti-alkali being easy to appear in fluorgypsum utilization and surface yellowing
Etc. endurance issues.
(4) fluorgypsum volume stability is good, stretch-bonded is strong maintaining for heretofore described fluorite cream base mending mortar
It spends on the basis of the advantages that high, the performances such as compression strength and flexural strength and cement base mending mortar are substantially equivalent, more general
Logical building gypsum properties of product are more excellent.
(5) present invention is used as substrate using discarded fluorgypsum, produced it is a kind of have it is early by force, rapid hardening, compression strength and
The mending mortar for the features such as adhesion strength is high, volume stability and water resistance are preferable not only environmental protection and waste utilization but also had reduced construction material
Production cost realizes utilization efficient to fluorgypsum, high added value, has preferable market prospects.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with specific embodiment, to this hair
Bright further description.
Embodiment 1
A kind of fluorite cream base mending mortar, including major ingredient and additive, in terms of mass fraction, the major ingredient includes such as the following group
Part: 70 parts of fluorgypsum, gathers materials 25 parts at 5 parts of portland cement；The additive includes following component: 0.5 part of sodium sulphate, alkaline earth
2 parts of metal oxide, 0.5 part of polycarboxylic acids, 0.1 part of polyvinyl alcohol, 0.5 part of Redispersable latex agent, organic fluorinated silicone class protective agent
0.4 part.
Wherein, portland cement is Portland fly ash cement, is the active mineral admixture；It is described that gather materials be 10 parts
80 mesh quartz sands, 10 part of 160 mesh quartz sand and 5 part of 200 mesh quartz sand；Sodium sulphate is the exciting agent；Alkaline earth oxide
For the adjustable solidification agent；Polycarboxylic acids is the water-reducing agent；Polyvinyl alcohol is the water-retaining admixture；The waterproofing agent is organic fluorinated silicone
Class protective agent.
When preparation, fluorgypsum, portland cement, sodium sulphate and alkaline earth oxide are added in ball mill and carry out grinding
2h, fluorgypsum attachment water content is 0.48%, residual acidity content 0.49%, fineness are 200 mesh standard sieve screen over-sizes 9.8%,
Then quartz sand, redispersable latex powder, polycarboxylic acids, polyvinyl alcohol and organic fluorinated silicone class are added into the fluorine gypsum powder after grinding
Protective agent is stirred evenly using double-shaft weightless stirring machine.Above-mentioned mending mortar material is added into water according to the ratio of mud for 0.2, is used
Electric hand drill blender, which stirs evenly, can be used.Its technical performance test result is as shown in table 1.
Table 1.
There is no the national standards about mending mortar in existing standard, therefore to the fluorite cream base in the embodiment of the present invention
Mending mortar measured when technical performance test with the technical standard of enterprise of certain cement base mending mortar enterprise, and with this
The cement base mending mortar sample of enterprise carries out technical performance test as control and compares.
Flexural strength of the fluorite cream base mending mortar at the 7th day it can be seen from above-mentioned technical performance test result
And compression strength has basically reached flexural strength and compression strength of the cement base mending mortar at the 28th day, therefore, the fluorine
Gypsum base mending mortar has the characteristics that early strong, rate of set is fast relative to cement base mending mortar, and its 28d flexural strength
It is substantially suitable with compression strength and cement base mending mortar.The 14d drying shrinkage of the fluorite cream base mending mortar is lower than water
Mud base mending mortar, therefore the volume stability of the fluorite cream base mending mortar is higher than the volume stability of cement base mending mortar
Property.The coefficient of softing of the fluorite cream base mending mortar is higher than the coefficient of softing of cement base mending mortar, therefore the fluorgypsum
The water resistance of base mending mortar is better than the water resistance of cement base mending mortar.The 14d of the fluorite cream base mending mortar stretches viscous
Knotting strength is higher than the 14d tensile bond strength of cement base mending mortar, therefore the fluorite cream base mending mortar is repaired than cement base
Stop-off slurry caking property is higher, and repair efficiency is more preferable.To sum up, the performance of the fluorite cream base mending mortar is far superior to cement base and repairs
The performance of stop-off slurry.
Embodiment 2
A kind of fluorite cream base mending mortar, including major ingredient and additive, in terms of mass fraction, the major ingredient includes such as the following group
Part: 50 parts of fluorgypsum, gathers materials 35 parts at 5 parts and 5 parts ground granulated blast furnace slags of portland cement；The additive includes following component: sulphur
3 parts of sour potassium, 1 part of carbonate compound, 0.5 part of Melamine, 0.5 part of polycarboxylic acids, 0.5 part of hydroxymethyl-propyl cellulose, can be again
1 part of dispersed latex agent, 0.2 part of silicates protective agent.
Wherein, portland cement is Portland fly ash cement, and portland cement and ground granulated blast furnace slag are the active mine
Polymer blends material；It is described that gather materials be 20 part of 80 mesh quartz sand, 10 part of 160 mesh quartz sand and 5 part of 200 mesh quartz sand；Potassium sulfate is institute
State exciting agent；Carbonate compound is the adjustable solidification agent；Melamine and polycarboxylic acids are the water-reducing agent；Hydroxymethylpropyl fiber
Element is the water-retaining admixture；Silicates protective agent is the waterproofing agent.
When preparation, Raymond mill is added in fluorgypsum, portland cement, ground granulated blast furnace slag, potassium sulfate and carbonate compound
Grinding in machine, fluorgypsum attachment water content is 0.46%, residual acidity content 0.47%, fineness are 200 mesh standard sieve screen over-sizes
9.3%, quartz sand, redispersable latex powder, Melamine, polycarboxylic acids, hydroxyl first are then added into the fluorine gypsum powder after grinding
Base propyl cellulose and silicates protective agent are stirred evenly using double-shaft weightless stirring machine.By above-mentioned mending mortar material
It is 0.25 plus water according to the ratio of mud, being stirred evenly using electric hand drill blender can be used.Its technical performance test result such as table 2
It is shown.
Table 2.
There is no the national standards about mending mortar in existing standard, therefore to the fluorite cream base in the embodiment of the present invention
Mending mortar measured when technical performance test with the technical standard of enterprise of certain cement base mending mortar enterprise, and with this
The cement base mending mortar sample of enterprise carries out technical performance test as control and compares.
Flexural strength of the fluorite cream base mending mortar at the 7th day it can be seen from above-mentioned technical performance test result
And compression strength has basically reached flexural strength and compression strength of the cement base mending mortar at the 28th day, therefore, the fluorine
Gypsum base mending mortar has the characteristics that early strong, rate of set is fast relative to cement base mending mortar, and its 28d flexural strength
It is substantially suitable with compression strength and cement base mending mortar.The 14d drying shrinkage of the fluorite cream base mending mortar is lower than water
Mud base mending mortar, therefore the volume stability of the fluorite cream base mending mortar is higher than the volume stability of cement base mending mortar
Property.The coefficient of softing of the fluorite cream base mending mortar is higher than the coefficient of softing of cement base mending mortar, therefore the fluorgypsum
The water resistance of base mending mortar is better than the water resistance of cement base mending mortar.The 14d of the fluorite cream base mending mortar stretches viscous
Knotting strength is higher than the 14d tensile bond strength of cement base mending mortar, therefore the fluorite cream base mending mortar is repaired than cement base
Stop-off slurry caking property is higher, and repair efficiency is more preferable.To sum up, the performance of the fluorite cream base mending mortar is far superior to cement base and repairs
The performance of stop-off slurry.
Embodiment 3
A kind of fluorite cream base mending mortar, including major ingredient and additive, in terms of mass fraction, the major ingredient includes such as the following group
Part: 25 parts of fluorgypsum, 1 part of silicon ash, 7 parts of ground granulated blast furnace slag, gathers materials 65 parts at 2 parts of portland cement；The additive includes as follows
Component: 1 part of aluminum aluminum sulfate, 2 parts of alkaline earth oxide, 1 part of carbonate compound, 0.5 part of benzene series water-reducing agent, polyvinyl alcohol
0.4 part, 0.1 part of hydroxymethyl-propyl cellulose, 1 part of Redispersable latex agent, 0.3 part of organic fluorine carbon protective agent.
Wherein, portland cement is Portland fly ash cement, and portland cement, silicon ash and ground granulated blast furnace slag are the work
Property mineral admixture；It is described that gather materials be 20 part of 80 mesh quartz sand, 20 part of 160 mesh quartz sand and 15 part of 200 mesh quartz sand；Aluminum sulfate
Potassium is the exciting agent；Alkaline earth oxide and carbonate compound are the adjustable solidification agent；Benzene series water-reducing agent is the diminishing
Agent；Polyvinyl alcohol and hydroxymethyl-propyl cellulose are the water-retaining admixture；The waterproofing agent is organic fluorine carbon protective agent.
When preparation, by fluorgypsum, portland cement, silicon ash, ground granulated blast furnace slag, aluminum aluminum sulfate, carbonate compound and alkali
Soil metal oxide, which is added in ball mill, carries out grinding 2h, and fluorgypsum attachment water content is 0.43%, residual acidity content is
0.45%, fineness is 200 mesh standard sieve screen over-sizes 9.1%, and quartz sand is then added into the fluorine gypsum powder after grinding, can divide again
It dissipates latex powder, benzene series water-reducing agent, polyvinyl alcohol, hydroxymethyl-propyl cellulose and organic fluorine carbon protective agent and uses double-shaft weightless
Blender stirs evenly.Above-mentioned mending mortar material is added into water according to the ratio of mud for 0.22, is stirred using electric hand drill blender equal
It is even to can be used.Its technical performance test result is as shown in table 3.
Table 3.
There is no the national standards about mending mortar in existing standard, therefore to the fluorite cream base in the embodiment of the present invention
Mending mortar measured when technical performance test with the technical standard of enterprise of certain cement base mending mortar enterprise, and with this
The cement base mending mortar sample of enterprise carries out technical performance test as control and compares.
Flexural strength of the fluorite cream base mending mortar at the 7th day it can be seen from above-mentioned technical performance test result
And compression strength has basically reached flexural strength and compression strength of the cement base mending mortar at the 28th day, therefore, the fluorine
Gypsum base mending mortar has the characteristics that early strong, rate of set is fast relative to cement base mending mortar, and its 28d flexural strength
It is substantially suitable with compression strength and cement base mending mortar.The 14d drying shrinkage of the fluorite cream base mending mortar is lower than water
Mud base mending mortar, therefore the volume stability of the fluorite cream base mending mortar is higher than the volume stability of cement base mending mortar
Property.The coefficient of softing of the fluorite cream base mending mortar is higher than the coefficient of softing of cement base mending mortar, therefore the fluorgypsum
The water resistance of base mending mortar is better than the water resistance of cement base mending mortar.The 14d of the fluorite cream base mending mortar stretches viscous
Knotting strength is higher than the 14d tensile bond strength of cement base mending mortar, therefore the fluorite cream base mending mortar is repaired than cement base
Stop-off slurry caking property is higher, and repair efficiency is more preferable.To sum up, the performance of the fluorite cream base mending mortar is far superior to cement base and repairs
The performance of stop-off slurry.
Embodiment 4
A kind of fluorite cream base mending mortar, including major ingredient and additive, in terms of mass fraction, the major ingredient includes such as the following group
Part: 15 parts of fluorgypsum, gathers materials 75 parts at 1 part of ground granulated blast furnace slag；The additive includes following component: 1 part of sodium sulphate, potassium sulfate 1
Part, 0.5 part of carbonate compound, 1 part of melamine, 0.3 part of polyvinyl alcohol, 0.1 part of Redispersable latex agent, organosilicon are oligomeric
0.5 part of species protective agent.
Wherein, ground granulated blast furnace slag is the active mineral admixture；It is described that gather materials be 35 part of 80 mesh quartz sand, 25 part 160
Mesh quartz sand and 15 part of 200 mesh quartz sand；Sodium sulphate and potassium sulfate are the exciting agent；Carbonate compound is that described adjust is coagulated
Agent；Melamine is the water-reducing agent；Polyvinyl alcohol is the water-retaining admixture；Silicone oligomer class protective agent is described anti-
Aqua.
When preparation, by fluorgypsum, ground granulated blast furnace slag, carbonate compound, sodium sulphate and potassium sulfate be added ball mill in into
Row grinding, fluorgypsum attachment water content is 0.42%, residual acidity content 0.43%, fineness are 200 mesh standard sieve screen over-sizes
8.8%, quartz sand, melamine, polyvinyl alcohol, redispersable latex powder are then added into the fluorine gypsum powder after grinding and has
The oligomeric species protective agent of machine silicon is stirred evenly using double-shaft weightless stirring machine.It is according to the ratio of mud by above-mentioned mending mortar material
0.23 adds water, and being stirred evenly using electric hand drill blender can be used.Its technical performance test result is as shown in table 4.
Table 4.
There is no the national standards about mending mortar in existing standard, therefore to the fluorite cream base in the embodiment of the present invention
Mending mortar measured when technical performance test with the technical standard of enterprise of certain cement base mending mortar enterprise, and with this
The cement base mending mortar sample of enterprise carries out technical performance test as control and compares.
Flexural strength of the fluorite cream base mending mortar at the 7th day it can be seen from above-mentioned technical performance test result
And compression strength has basically reached flexural strength and compression strength of the cement base mending mortar at the 28th day, therefore, the fluorine
Gypsum base mending mortar has the characteristics that early strong, rate of set is fast relative to cement base mending mortar, and its 28d flexural strength
It is substantially suitable with compression strength and cement base mending mortar.The 14d drying shrinkage of the fluorite cream base mending mortar is lower than water
Mud base mending mortar, therefore the volume stability of the fluorite cream base mending mortar is higher than the volume stability of cement base mending mortar
Property.The coefficient of softing of the fluorite cream base mending mortar is higher than the coefficient of softing of cement base mending mortar, therefore the fluorgypsum
The water resistance of base mending mortar is better than the water resistance of cement base mending mortar.The 14d of the fluorite cream base mending mortar stretches viscous
Knotting strength is higher than the 14d tensile bond strength of cement base mending mortar, therefore the fluorite cream base mending mortar is repaired than cement base
Stop-off slurry caking property is higher, and repair efficiency is more preferable.To sum up, the performance of the fluorite cream base mending mortar is far superior to cement base and repairs
The performance of stop-off slurry.
Embodiment 5
A kind of fluorite cream base mending mortar, including major ingredient and additive, in terms of mass fraction, the major ingredient includes such as the following group
Part: 80 parts of fluorgypsum, 2 parts of silicon ash, gathers materials 55 parts at 5 parts of portland cement；The additive includes following component: sodium sulphate 0.5
Part, 1 part of aluminum aluminum sulfate, 1 part of alkaline earth oxide, 2 parts of carbonate compound, 0.1 part of polycarboxylic acids, hydroxymethyl-propyl cellulose
0.05 part, 0.1 part of Redispersable latex agent, 0.05 part of acrylic compounds protective agent.
Wherein, portland cement is that Portland fly ash cement, portland cement and silicon ash blend for the active mineral
Material；It is described that gather materials be 30 part of 80 mesh quartz sand, 15 part of 160 mesh quartz sand and 10 part of 200 mesh quartz sand；Sodium sulphate and aluminum aluminum sulfate
For the exciting agent；Alkaline earth oxide and carbonate compound are the adjustable solidification agent；Polycarboxylic acids is the water-reducing agent；Hydroxyl first
Base propyl cellulose is the water-retaining admixture；Acrylic compounds protective agent is the waterproofing agent.
When preparation, by fluorgypsum, portland cement, silicon ash, sodium sulphate, aluminum aluminum sulfate carbonate compound and alkaline-earth metal
Oxide be added ball mill in carry out grinding 2h, fluorgypsum adhere to water content be 0.42%, residual acidity content 0.46%, fineness
For 200 mesh standard sieve screen over-sizes 8.7%, quartz sand, polycarboxylic acids, hydroxymethylpropyl are then added into the fluorine gypsum powder after grinding
Cellulose, redispersable latex powder and acrylic compounds protective agent are stirred evenly using double-shaft weightless stirring machine.By above-mentioned repairing
Mortar material is 0.24 plus water according to the ratio of mud, and being stirred evenly using electric hand drill blender can be used.The test of its technical performance
The results are shown in Table 5.
Table 5.
There is no the national standards about mending mortar in existing standard, therefore to the fluorite cream base in the embodiment of the present invention
Mending mortar measured when technical performance test with the technical standard of enterprise of certain cement base mending mortar enterprise, and with this
The cement base mending mortar sample of enterprise carries out technical performance test as control and compares.
Flexural strength of the fluorite cream base mending mortar at the 7th day it can be seen from above-mentioned technical performance test result
And compression strength has basically reached flexural strength and compression strength of the cement base mending mortar at the 28th day, therefore, the fluorine
Gypsum base mending mortar has the characteristics that early strong, rate of set is fast relative to cement base mending mortar, and its 28d flexural strength
It is substantially suitable with compression strength and cement base mending mortar.The 14d drying shrinkage of the fluorite cream base mending mortar is lower than water
Mud base mending mortar, therefore the volume stability of the fluorite cream base mending mortar is higher than the volume stability of cement base mending mortar
Property.The coefficient of softing of the fluorite cream base mending mortar is higher than the coefficient of softing of cement base mending mortar, therefore the fluorgypsum
The water resistance of base mending mortar is better than the water resistance of cement base mending mortar.The 14d of the fluorite cream base mending mortar stretches viscous
Knotting strength is higher than the 14d tensile bond strength of cement base mending mortar, therefore the fluorite cream base mending mortar is repaired than cement base
Stop-off slurry caking property is higher, and repair efficiency is more preferable.To sum up, the performance of the fluorite cream base mending mortar is far superior to cement base and repairs
The performance of stop-off slurry.
Comparative example 1
A kind of fluorite cream base mending mortar, including major ingredient and additive, in terms of mass fraction, the major ingredient includes such as the following group
Part: 75 parts of fluorgypsum gathers materials 50 parts；The additive includes following component: 1 part of potassium sulfate, 0.5 part of polycarboxylic acids, methylol third
0.1 part of base cellulose, 0.5 part of Redispersable latex agent.
It is wherein, described that gather materials be 25 part of 80 mesh quartz sand, 15 part of 160 mesh quartz sand and 10 part of 200 mesh quartz sand；Potassium sulfate
For the exciting agent；Polycarboxylic acids is the water-reducing agent；Hydroxymethyl-propyl cellulose is the water-retaining admixture.
When preparation, fluorgypsum and potassium sulfate are added in ball mill and carry out grinding 2h, fluorgypsum attachment water content is
0.45%, residual acidity content 0.44%, fineness are 200 mesh standard sieve screen over-sizes 9.5%, then to the fluorine gypsum powder after grinding
Middle addition quartz sand, polycarboxylic acids, hydroxymethyl-propyl cellulose and redispersable latex powder are stirred using double-shaft weightless stirring machine
Uniformly.Above-mentioned mending mortar material is added into water according to the ratio of mud for 0.24, being stirred evenly using electric hand drill blender can be used.
Its technical performance test result is as shown in table 6.
Table 6.
The fluorite cream base mending mortar flexural strength described in comparative example 1 it can be seen from above-mentioned technical performance test result
It is lower than cement base mending mortar with compressive strength determination value, drying shrinkage (14d) measured value is higher than cement base mending mortar,
Its coefficient of softing measured value is lower than cement base mending mortar, and tensile bond strength (14d) measured value repairs sand lower than cement base
Slurry.Therefore, fluorite cream base mending mortar volume stability described in comparative example 1 is poor, tensile bond strength is low, resistance to compression and anti-folding are strong
Low, poor water resistance is spent, performance is lower than cement base mending mortar, and repairs sand lower than the fluorite cream base in Examples 1 to 5
Slurry.
By above embodiments 1~5 and comparative example 1 it is found that firstly, heretofore described fluorite cream base mending mortar uses II
Type anhydrous gypsum, adjustable solidification agent and active mineral admixture combination, while quickly II type anhydrous gypsum of excitation, in gypsum crystal
The middle alumino-silicate three dimensional network for increasing some densifications；Remaining the advantages that gypsum volume stability is good, tensile bond strength is high
While, and the shortcomings that overcome low common building gypsum material intensity, poor water resistance.Secondly, by the fluorite cream base
Active mineral admixture and waterproofing agent are added in mending mortar, are improved the coefficient of softing of fluorite cream base, are improved fluorgypsum
The water resistance of base.By into the fluorite cream base mending mortar adjustable solidification agent, exciting agent and mineral admixture match, it is right
Fluorite cream base has carried out safe excitation, avoids the durabilities such as the anti-alkali being easy to appear in fluorgypsum utilization and surface yellowing and asks
Topic.Again, fluorgypsum volume stability is good, tensile bond strength is high maintaining for heretofore described fluorite cream base mending mortar
The advantages that on the basis of, the performances such as compression strength and flexural strength and cement base mending mortar are substantially equivalent, more commonly build
It is more excellent to build gypsum product performance；And using discarded fluorgypsum as substrate, not only environmental protection and waste utilization but also the life of construction material had been reduced
Cost is produced, utilization efficient to fluorgypsum, high added value is realized, there are preferable market prospects.
It should be understood by those ordinary skilled in the art that: the discussion of any of the above embodiment is exemplary only, not
It is intended to imply that the scope of the present disclosure (including claim) is limited to these examples；Under thinking of the invention, above embodiments
Or it can also be combined between the technical characteristic in different embodiments, and there are different aspects present invention as described above
Many other variations, in order to it is concise they do not provided in details.Therefore, all within the spirits and principles of the present invention,
Any omission, modification, equivalent replacement, improvement for being made etc., should all be included in the protection scope of the present invention.
Claims (6)
1. a kind of fluorite cream base mending mortar, which is characterized in that including major ingredient and additive, in terms of mass fraction, the major ingredient
Consist of the following components: 15~80 parts of fluorgypsum, gathers materials 20~75 parts at 1~10 part of active mineral admixture；The additive packet
Include following component: 0.5~3 part of exciting agent, 0.5~3 part of adjustable solidification agent, 0.1~1 part of water-reducing agent, water-retaining admixture 0.05~0.5
Part, 0.1~1 part of Redispersable latex agent, 0.05~0.5 part of waterproofing agent；
The exciting agent is one of sodium sulphate, potassium sulfate, aluminum aluminum sulfate or a variety of；
The adjustable solidification agent is one of alkaline earth oxide, carbonate compound or a variety of.
2. fluorite cream base mending mortar as described in claim 1, which is characterized in that the fluorgypsum is sulfuric acid solution Fluorspar Powder
By-product when hydrofluoric acid is produced, its attachment water content < 0.5% after drying, grinding processing, residual acidity content < 0.5%,
It is silicon ash, ground granulated blast furnace slag, silicate that its fineness, which controls the active mineral admixture described in 200 mesh standard sieve screen over-size < 10%,
One of cement is a variety of.
3. fluorite cream base mending mortar as described in claim 1, which is characterized in that described to gather materials be quartz sand, fineness control
System is in 40~325 mesh standard sieves.
4. fluorite cream base mending mortar as described in claim 1, which is characterized in that the water-reducing agent is polycarboxylic acids, melamine
One of amine and naphthalene water reducer.
5. fluorite cream base mending mortar as described in claim 1, which is characterized in that the water-retaining admixture be polyvinyl alcohol,
One of hydroxymethyl-propyl cellulose is a variety of.
6. fluorite cream base mending mortar as described in claim 1, which is characterized in that the waterproofing agent is silicates protection
In agent, silicone oligomer class protective agent, acrylic compounds protective agent, organic fluorinated silicone class protective agent and organic fluorine carbon protective agent
It is one or more of.
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| WO2021172974A1 (en) * | 2020-02-24 | 2021-09-02 | Daniel Davila Barrientos | Enhanced stable compositions based on synthetic anhydrite type ii, for the manufacture of construction units and mortars, methods for manufacturing same and uses thereof |
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| CN112250405A (en) * | 2020-10-15 | 2021-01-22 | 江苏一夫科技股份有限公司 | Fluorgypsum-based plastering material and preparation method and application thereof |
| CN116283178A (en) * | 2022-08-16 | 2023-06-23 | 锦洋高新材料股份有限公司 | Fluorine gypsum self-leveling mortar and preparation method thereof |
| CN115594476B (en) * | 2022-10-12 | 2023-09-05 | 北科蕴宏环保科技(北京)有限公司 | Cement-free high-performance concrete repair material and preparation method thereof |
| GB2624647A (en) * | 2022-11-23 | 2024-05-29 | Forticrete Ltd | A concrete composition |
| CN116003088B (en) * | 2022-12-28 | 2024-05-14 | 河南理工大学 | Method for exciting activity of fluorogypsum |
| CN116730693A (en) * | 2023-04-10 | 2023-09-12 | 东南大学 | Low-shrinkage high-adhesion alkali slag cement-based repair material and preparation method thereof |
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