CN108238737A - A kind of high crack-resisting swelling agent - Google Patents
A kind of high crack-resisting swelling agent Download PDFInfo
- Publication number
- CN108238737A CN108238737A CN201611225575.9A CN201611225575A CN108238737A CN 108238737 A CN108238737 A CN 108238737A CN 201611225575 A CN201611225575 A CN 201611225575A CN 108238737 A CN108238737 A CN 108238737A
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- Prior art keywords
- weight
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- swelling agent
- land plaster
- high crack
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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
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/34—Non-shrinking or non-cracking materials
- C04B2111/343—Crack resistant materials
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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 present invention a kind of high crack-resisting swelling agent is disclosed, mixed according to a certain percentage by raw materials such as the mixture of land plaster and dephosphorization land plaster, silica, calcium oxide, alum acid iron cement, calcining coal gangues grind it is obtained.7d free swelling rate %, 28d free swelling rate %, 7d compression strength/MPa, 28d compression strength/MPa detections are finally carried out to it, its testing result is shown, the swelling agent that the method for the invention prepares, with higher free swelling rate, and requirement is used in combination in the duration of its expansion effect and the stability of dilation very much, concrete overall target evaluation after hardening, well.The expansion rate of swelling agent is consistent with concrete strength development, and the concrete quality after hardening is good.
Description
Technical field
The invention belongs to civil construction field of material technology, and in particular to auxiliary agent technology, especially a kind of high cracking resistance coagulation
Soil expansion agent.
Background technology
Normal concrete is mainly by cement, water, sand, stone and additive (can contain additive and admixture) by certain ratio
Example cooperation, it is agitated obtained by cement concrete, also referred to as normal concrete, with the development of building trade, extensively should already
For in civil engineering.
Cement expansive material generates the crystallization that volume becomes larger by being reacted with cement, the water hydratable in concrete, so as to
Volume of concrete is caused to expand, generates certain prestressing force, helps to control Shrinkage Cracking of Concrete.Cement expansive material extensively should
Use room build, multiple branch fields such as water conservancy, road traffic, nuclear power, and bring good economic benefits for national production and construction.
To improve certain properties of concrete, generally by adding in additive.There is apparent techno-economic effect due to mixing additive,
It has become the indispensable component of concrete.In addition, for concrete after the workability of improvement concrete mix or hardening
Performance, save cement, can also mix levigate mineral admixture when concrete stirs, so as to influence the intensity of concrete,
Deformation, the heat of hydration, impermeability and color etc..It is (anti-can to be divided into low-strength concrete according to compression strength for classification for concrete
Compressive Strength is less than 30MPa), middle strength concrete (compression strength 30-60Mpa) and strong concrete (compression strength more than etc.
In 60MPa)；Its practicality and different use environments.
For the reliable concrete of preparation performance good quality, its every characteristic of the considerations of comprehensive is needed, is being coordinated
During than design, it is necessary to reasonably meet other various performance requirements for adapting to various application scenarios.
Invention content
Genetic defects in concrete are reduced in order to preferably reach, the purpose that micro-property is improved, present invention head
First propose a kind of high crack-resisting swelling agent, swelling agent component includes：
By following weight ratio, each raw material is weighed：
The mixture 20-30 parts by weight of land plaster and dephosphorization land plaster, silica 1 5-20 parts by weight, calcium oxide 30-40
Parts by weight, alum acid iron cement 3-6 parts by weight, calcining coal gangue 6-12 parts by weight, calcium stearate 6-10 parts by weight, nano barium titanate aluminium are fine
Tie up 3-8 parts by weight, polypropylene fibre 1-3 parts by weight, flyash 8-10 parts by weight, magnesia 5-10 parts by weight；
For above-mentioned technical proposal, in the case of preferred, phenol 1-3 parts by weight, ethyl alcohol 1-3 parts by weight are further included.
For above-mentioned technical proposal, in the case of preferred, the mixture of land plaster and dephosphorization land plaster, mass ratio 1:
1.5, fineness is less than 300 μm；
For above-mentioned technical proposal, in the case of preferred, the calcium stearate is by calcium chloride and stearic acid and sodium palmitate
The mixture reaction generation of salt is washed with water removal sodium chloride and obtains.
The invention also discloses a kind of application methods of the high crack-resisting swelling agent according to above-mentioned technical proposal：
Mixing after each raw material is crushed, wherein, the particle diameter that the raw material crushes is respectively less than 300 μm；
500~800 parts by weight of cement；
40~50 parts by weight of metakaolin and SILICA FUME silicon ash equal proportion mixture；
1000~1400 parts by weight of silicon carbide sand activated carbon or ground blast furnace slag；
40~60 parts by weight of swelling agent being mixed with using above-mentioned raw materials；
250~350 parts by weight of water；
For above-mentioned technical proposal, in the case of preferred, each raw material is preferably in a proportion of in the swelling agent component：Stone
The mixture 20-25 parts by weight of cream powder and dephosphorization land plaster, silica 1 5-20 parts by weight, 35 parts by weight of calcium oxide, alum acid iron
5 parts by weight of mud, calcining coal gangue 6-8 parts by weight, calcium stearate 6-8 parts by weight, 6 parts by weight of nano barium titanate aluminum fiber, polypropylene
2 parts by weight of fiber, 8 parts by weight of flyash, 7 parts by weight of magnesia；
For above-mentioned technical proposal, in the case of preferred, expansive agent dosage is 50 parts by weight；
For above-mentioned technical proposal, in the case of preferred, the larger raw material of various granularities described above carries out grinding, slightly
It is less than 300 μm to be milled to fineness；, then, it is stirred uniformly with other mixtures.
Testing result proves that the product expansion rate prepared by the method for the present invention is high, and expansion effect is lasting, stablizes, Ke Yiyou
It imitates and is shunk caused by compensating concrete each age, and reduce the bleed of concrete surface and the isolation to gather materials, so as to have
Effect improves the impermeability of concrete, is impervious good and long lifespan concrete additives.
Specific embodiment
Following non-limiting examples can make those of ordinary skill in the art be more fully understood the present invention, but not with
Any mode limits the present invention.Any one skilled in the art in the technical scope of present disclosure, according to
Technical scheme of the present invention and its inventive concept carry out equivalent substitution or change and belong to protection category of the present invention.
Embodiment 1
Mixing is spare after each raw material is crushed
800 parts by weight of cement；
50 parts by weight of metakaolin and SILICA FUME silicon ash equal proportion mixture；
1000 parts by weight of silicon carbide sand activated carbon or ground blast furnace slag；
40 parts by weight of swelling agent being mixed with using above-mentioned raw materials；
250 parts by weight of water；
Wherein, the swelling agent component includes：
The ratio of each raw material is in swelling agent component：The mixture 20-25 parts by weight of land plaster and dephosphorization land plaster, dioxy
SiClx 15-20 parts by weight, 35 parts by weight of calcium oxide, 5 parts by weight of alum acid iron cement, calcining coal gangue 6-8 parts by weight, calcium stearate 6-
8 parts by weight, 6 parts by weight of nano barium titanate aluminum fiber, 2 parts by weight of polypropylene fibre, 8 parts by weight of flyash, 7 parts by weight of magnesia；
Wherein, the mass ratio of land plaster and dephosphorization land plaster is 1 in land plaster and dephosphorization gypsum powder mixture:1.5, fineness
To be less than 300 μm；The calcium stearate is reacted generation with the mixture of stearic acid and palmitic acid sodium salt by calcium chloride and is washed with water
Removal sodium chloride obtains.
The raw material larger to various granularities described above carries out grinding, and it is less than 300 μm to roughly grind to fineness；, then, with
Other mixtures are stirred uniformly.
It is detected, testing result and is analyzed as follows：
By to this product 7d free swelling rate %, 28d free swelling rate %, 7d compression strength/MPa, 28d pressure resistances
Degree/MPa detections, testing result respectively reach：7d free swelling rates are 0.31,28d free swelling rates 0.32,7d compression strength
49.3MPa, 28d compression strength 59.8MPa.Thus data are it is found that the swelling agent that the method for the invention prepares, have compared with
High free swelling rate, and requirement is used in combination in the stability of the duration of its expansion effect and dilation very much, after hardening
Concrete overall target evaluation, well.The expansion rate of swelling agent is consistent with concrete strength development, the concrete after hardening
It is high-quality.
Embodiment 2
Mixing is spare after each raw material is crushed
800 parts by weight of cement；
50 parts by weight of metakaolin and SILICA FUME silicon ash equal proportion mixture；
1000 parts by weight of silicon carbide sand activated carbon or ground blast furnace slag；
60 parts by weight of swelling agent being mixed with using above-mentioned raw materials；
250 parts by weight of water；
Wherein, the swelling agent component includes：
The ratio of each raw material is in swelling agent component：The mixture 20-25 parts by weight of land plaster and dephosphorization land plaster, dioxy
SiClx 15-20 parts by weight, 35 parts by weight of calcium oxide, 5 parts by weight of alum acid iron cement, calcining coal gangue 6-8 parts by weight, calcium stearate 6-
8 parts by weight, 6 parts by weight of nano barium titanate aluminum fiber, 2 parts by weight of polypropylene fibre, 8 parts by weight of flyash, 7 parts by weight of magnesia；
Wherein, the mass ratio of land plaster and dephosphorization land plaster is 1 in land plaster and dephosphorization gypsum powder mixture:1.5, fineness
To be less than 300 μm；The calcium stearate is reacted generation with the mixture of stearic acid and palmitic acid sodium salt by calcium chloride and is washed with water
Removal sodium chloride obtains.
The raw material larger to various granularities described above carries out grinding, and it is less than 300 μm to roughly grind to fineness；, then, with
Other mixtures are stirred uniformly.
It is detected, testing result and is analyzed as follows：
By to this product 7d free swelling rate %, 28d free swelling rate %, 7d compression strength/MPa, 28d pressure resistances
Degree/MPa detections, testing result respectively reach：7d free swelling rates are 0.31,28d free swelling rates 0.32,7d compression strength
49.3MPa, 28d compression strength 59.8MPa.Thus data are it is found that the swelling agent that the method for the invention prepares, have compared with
High free swelling rate, and requirement is used in combination in the stability of the duration of its expansion effect and dilation very much, after hardening
Concrete overall target evaluation, well.The expansion rate of swelling agent is consistent with concrete strength development, the concrete after hardening
It is high-quality.
Embodiment 3
Mixing is spare after each raw material is crushed
800 parts by weight of cement；
50 parts by weight of metakaolin and SILICA FUME silicon ash equal proportion mixture；
1000 parts by weight of silicon carbide sand activated carbon or ground blast furnace slag；
60 parts by weight of swelling agent being mixed with using above-mentioned raw materials；
250 parts by weight of water；
Wherein, the swelling agent component includes：
The ratio of each raw material is in swelling agent component：The mixture 20-25 parts by weight of land plaster and dephosphorization land plaster, dioxy
SiClx 15-20 parts by weight, 35 parts by weight of calcium oxide, 5 parts by weight of alum acid iron cement, calcining coal gangue 6-8 parts by weight, calcium stearate 6-
8 parts by weight, 6 parts by weight of nano barium titanate aluminum fiber, 2 parts by weight of polypropylene fibre, 8 parts by weight of flyash, 7 parts by weight of magnesia；
3 parts by weight of phenol, 2 parts by weight of ethyl alcohol.
Wherein, the mass ratio of land plaster and dephosphorization land plaster is 1 in land plaster and dephosphorization gypsum powder mixture:1.5, fineness
To be less than 300 μm；The calcium stearate is reacted generation with the mixture of stearic acid and palmitic acid sodium salt by calcium chloride and is washed with water
Removal sodium chloride obtains.
The raw material larger to various granularities described above carries out grinding, and it is less than 300 μm to roughly grind to fineness；, then, with
Other mixtures are stirred uniformly.
It is detected, testing result and is analyzed as follows：
By to this product 7d free swelling rate %, 28d free swelling rate %, 7d compression strength/MPa, 28d pressure resistances
Degree/MPa detections, testing result respectively reach：7d free swelling rates are 0.31,28d free swelling rates 0.32,7d compression strength
49.3MPa, 28d compression strength 59.8MPa.Thus data are it is found that the swelling agent that the method for the invention prepares, have compared with
High free swelling rate, and requirement is used in combination in the stability of the duration of its expansion effect and dilation very much, after hardening
Concrete overall target evaluation, well.The expansion rate of swelling agent is consistent with concrete strength development, the concrete after hardening
It is high-quality.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (7)
1. a kind of high crack-resisting swelling agent, it is characterised in that：Swelling agent component includes：
By following weight ratio, each raw material is weighed：
The mixture 20-30 parts by weight of land plaster and dephosphorization land plaster, silica 1 5-20 parts by weight, calcium oxide 30-40 weight
Part, alum acid iron cement 3-6 parts by weight, calcining coal gangue 6-12 parts by weight, calcium stearate 6-10 parts by weight, nano barium titanate aluminum fiber 3-
8 parts by weight, polypropylene fibre 1-3 parts by weight, flyash 8-10 parts by weight, magnesia 5-10 parts by weight.
2. high crack-resisting swelling agent according to claim 1, it is characterised in that：Further include phenol 1-3 parts by weight, second
Alcohol 1-3 parts by weight.
3. high crack-resisting swelling agent according to claim 1, it is characterised in that：The land plaster and dephosphorization land plaster
Mixture, mass ratio 1:1.5, fineness is less than 300 μm.
4. high crack-resisting swelling agent according to claim 1, it is characterised in that：The calcium stearate by calcium chloride with
The reaction generation of the mixture of stearic acid and palmitic acid sodium salt is washed with water removal sodium chloride and obtains.
5. high crack-resisting swelling agent according to claim 1, it is characterised in that：Its application method includes：
Mixing after each raw material is crushed, wherein, the particle diameter that the raw material crushes is respectively less than 300 μm；
500~800 parts by weight of cement；
40~50 parts by weight of metakaolin and SILICA FUME silicon ash equal proportion mixture；
1000~1400 parts by weight of silicon carbide sand activated carbon or ground blast furnace slag；
40~60 parts by weight of swelling agent being mixed with using above-mentioned raw materials；
250~350 parts by weight of water.
6. high crack-resisting swelling agent according to claim 1, it is characterised in that：Each original in the swelling agent component
Material is preferably in a proportion of：The mixture 20-25 parts by weight of land plaster and dephosphorization land plaster, silica 1 5-20 parts by weight, oxidation
35 parts by weight of calcium, 5 parts by weight of alum acid iron cement, calcining coal gangue 6-8 parts by weight, calcium stearate 6-8 parts by weight, nano barium titanate aluminium
6 parts by weight of fiber, 2 parts by weight of polypropylene fibre, 8 parts by weight of flyash, 7 parts by weight of magnesia.
7. high crack-resisting swelling agent according to claim 1, it is characterised in that：The expansive agent dosage is 50 weight
Part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611225575.9A CN108238737A (en) | 2016-12-27 | 2016-12-27 | A kind of high crack-resisting swelling agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611225575.9A CN108238737A (en) | 2016-12-27 | 2016-12-27 | A kind of high crack-resisting swelling agent |
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| Publication Number | Publication Date |
|---|---|
| CN108238737A true CN108238737A (en) | 2018-07-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611225575.9A Pending CN108238737A (en) | 2016-12-27 | 2016-12-27 | A kind of high crack-resisting swelling agent |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110204242A (en) * | 2019-06-14 | 2019-09-06 | 云南鼎工建筑材料制造有限公司 | Enhanced expansion antimitotic agent of one kind and preparation method thereof |
-
2016
- 2016-12-27 CN CN201611225575.9A patent/CN108238737A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110204242A (en) * | 2019-06-14 | 2019-09-06 | 云南鼎工建筑材料制造有限公司 | Enhanced expansion antimitotic agent of one kind and preparation method thereof |
| CN110204242B (en) * | 2019-06-14 | 2021-08-10 | 云南鼎工建筑材料制造有限公司 | Enhanced expansion anti-cracking agent and preparation method thereof |
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Application publication date: 20180703 |