CN106186793A - A kind of cement expansive material - Google Patents
A kind of cement expansive material Download PDFInfo
- Publication number
- CN106186793A CN106186793A CN201610521223.1A CN201610521223A CN106186793A CN 106186793 A CN106186793 A CN 106186793A CN 201610521223 A CN201610521223 A CN 201610521223A CN 106186793 A CN106186793 A CN 106186793A
- Authority
- CN
- China
- Prior art keywords
- parts
- expansive material
- cement expansive
- powder
- gypsum fibrosum
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The present invention relates to concrete additives technical field, especially a kind of cement expansive material；The mass parts composition of this cement expansive material is as follows: 12 25 parts of pitchstone ore in sand form powder, meerschaum 46 parts, gangue 6 12 parts, Gypsum Fibrosum powder 20 30 parts, calcium stearate 6 10 parts, nano barium titanate aluminum fiber 38 parts, polyvinyl alcohol 6 10 parts, hydroxypropylcelluloether ether 35 parts, potassium sulfate 18 parts, 24 parts of ammonium sulfate；The cement expansive material of the present invention have raw material be easy to get, the feature such as with low cost and function admirable, reasonably combined, with high admixture usage ratio, low-cementitious material usage ratio as principal character by each component；Ultimately form that workability is good, intensity is high, crack resistance is good, impervious good and life-span long concrete auxiliary agent.
Description
Technical field
The present invention relates to concrete additives technical field, especially a kind of cement expansive material.
Background technology
It is known that the construction of seabed tunnel is the project under construction the most complicated in current transport development, standard is the highest；Tunnel
Road concrete does not allows hazardness crack occur, and its maximum length of embedment is at about-40m.Seabed tunnel many employings batch production is pre-
Tunneling boring processed pours, and one-time-concreting concrete square amount reaches about 3400m3, and design strength is that 56d reaches C50, simultaneously for ensureing early
The form removal of age, it is desirable to 3d intensity reaches C30.Owing to tunnel concrete structure needs to bear high pressure sea water effect for a long time, therefore
Anti-permeability performance, cracking resistance and the long term life of tunnel concrete is proposed requirements at the higher level.Expand frequently with adding at present
Agent improves the cracking resistance of concrete；Mostly be with calcined kaolin, alunite, dickite, aluminium ore slag, calcium aluminate clinker or
The entringite class extender of calcium sulphoaluminate grog and Gypsum Fibrosum preparation, exists that expansion energy is low, expansion rate and concrete coagulation core water
Change that reaction rate is not mated, volume is big, alkali content is high easily causes the unfavorable factors such as alkali-aggregate reaction；With CaO as main component
Calcium oxide expansion agents, exists that speed of expansion is too fast, Bulking Time is short, expands with concrete shrinkage speed is inharmonious, be difficult to protect
The shortcoming such as deposit；, there is speed of expansion the slowest in the magnesium oxide class extender with MgO as main component, expansion start time is the most backward
In the concrete shrinkage time started, it is impossible to play the drawbacks such as cracking resistance effect.
Summary of the invention
The technical problem to be solved in the present invention is: overcome deficiency of the prior art, it is provided that the coagulation of a kind of stable performance
Soil expansion agent.
For solving above-mentioned technical problem, the technical solution used in the present invention is as follows:
A kind of cement expansive material, the mass parts composition of this cement expansive material is as follows: pitchstone ore in sand form powder 12-25 part,
Meerschaum 4-6 part, gangue 6-12 part, Gypsum Fibrosum powder 20-30 part, calcium stearate 6-10 part, nano barium titanate aluminum fiber 3-8 part, poly-
Vinyl alcohol 6-10 part, hydroxypropylcelluloether ether 3-5 part, potassium sulfate 1-8 part, ammonium sulfate 2-4 part.
As preferably, described a kind of cement expansive material, it is characterised in that: described pitchstone ore in sand form powder is S105 level pine
Fat rock ore in sand form powder.
As preferably, described a kind of cement expansive material, it is characterised in that: described Gypsum Fibrosum powder select desulfurization gypsum powder and
The mixture of dephosphorization Gypsum Fibrosum powder, its mass ratio is 1:1.5, and fineness is 250 mesh.
As preferably, described a kind of cement expansive material, it is characterised in that: described calcium stearate by calcium chloride with stearic
The mixture reaction generation of acid and Palmic acid sodium salt washes removal sodium chloride with water and obtains.
As preferably, described a kind of cement expansive material, it is characterised in that comprise the following steps:
(1) cement expansive material proportion design, its mass parts composition as follows: 12 parts of pitchstone ore in sand form powder, meerschaum 4 parts,
Gangue 6 parts, Gypsum Fibrosum powder 20 parts, calcium stearate 6 parts, nano barium titanate aluminum fiber 3 parts, polyvinyl alcohol 6 parts, hydroxypropylcelluloether ether
3 parts, potassium sulfate 1 part, 2 parts of ammonium sulfate；
(2) mixture stirs, and whipping temp is 15-18 DEG C.
Technical scheme is used to provide the benefit that:
The cement expansive material of the present invention have raw material be easy to get, the feature such as with low cost and function admirable, by each group
That divides is reasonably combined, with high admixture usage ratio, low-cementitious material usage ratio as principal character；Ultimately form workability good
Well, intensity is high, crack resistance is good, impervious good and life-span long concrete auxiliary agent.
The cement expansive material mineralogical composition of the present invention is reasonable, and Bulking Time, speed can be anti-with concrete with swell increment
Should shrink and strength development is coordinated mutually, have good swelling properties；Volume is low, and construction usage is convenient, do not affect early strength and
Later strength, does not increase slump loss, it is adaptable to anti-crack and anti-seepage requires high water-proof concrete and pumping construction
Water-proof concrete.
Detailed description of the invention
A kind of cement expansive material, the mass parts composition of this cement expansive material is as follows: pitchstone ore in sand form powder 12-25 part,
Meerschaum 4-6 part, gangue 6-12 part, Gypsum Fibrosum powder 20-30 part, calcium stearate 6-10 part, nano barium titanate aluminum fiber 3-8 part, poly-
Vinyl alcohol 6-10 part, hydroxypropylcelluloether ether 3-5 part, potassium sulfate 1-8 part, ammonium sulfate 2-4 part.
As preferably, described a kind of cement expansive material, it is characterised in that: described pitchstone ore in sand form powder is S105 level pine
Fat rock ore in sand form powder.
As preferably, described a kind of cement expansive material, it is characterised in that: described Gypsum Fibrosum powder select desulfurization gypsum powder and
The mixture of dephosphorization Gypsum Fibrosum powder, its mass ratio is 1:1.5, and fineness is 250 mesh.
As preferably, described a kind of cement expansive material, it is characterised in that: described calcium stearate by calcium chloride with stearic
The mixture reaction generation of acid and Palmic acid sodium salt washes removal sodium chloride with water and obtains.
As preferably, described a kind of cement expansive material, it is characterised in that comprise the following steps:
(1) cement expansive material proportion design, its mass parts composition as follows: 12 parts of pitchstone ore in sand form powder, meerschaum 4 parts,
Gangue 6 parts, Gypsum Fibrosum powder 20 parts, calcium stearate 6 parts, nano barium titanate aluminum fiber 3 parts, polyvinyl alcohol 6 parts, hydroxypropylcelluloether ether
3 parts, potassium sulfate 1 part, 2 parts of ammonium sulfate.
(2) mixture stirs, and whipping temp is 15-18 DEG C.
With the above-mentioned desirable embodiment according to the present invention for enlightenment, by above-mentioned description, relevant staff is complete
Entirely can carry out various change and amendment in the range of without departing from this invention technological thought.The technology of this invention
The content that property scope is not limited in description, it is necessary to determine its technical scope according to right.
Claims (5)
1. a cement expansive material, it is characterised in that the mass parts composition of this cement expansive material is as follows: pitchstone ore in sand form powder
12-25 part, meerschaum 4-6 part, gangue 6-12 part, Gypsum Fibrosum powder 20-30 part, calcium stearate 6-10 part, nano barium titanate aluminum fiber
3-8 part, polyvinyl alcohol 6-10 part, hydroxypropylcelluloether ether 3-5 part, potassium sulfate 1-8 part, ammonium sulfate 2-4 part.
2. according to a kind of cement expansive material described in claim 1, it is characterised in that: described pitchstone ore in sand form powder is S105
Level pitchstone ore in sand form powder.
3. according to a kind of cement expansive material described in claim 1-2, it is characterised in that: described Gypsum Fibrosum powder selects desulfurated plaster
Powder and the mixture of dephosphorization Gypsum Fibrosum powder, its mass ratio is 1: 1.5, and fineness is 250 mesh.
4. according to a kind of cement expansive material described in claim 1-2, it is characterised in that: described calcium stearate by calcium chloride with
The mixture reaction generation of stearic acid and Palmic acid sodium salt washes removal sodium chloride with water and obtains.
5. according to a kind of cement expansive material described in claim 1-4, it is characterised in that comprise the following steps:
(1) cement expansive material proportion design, its mass parts composition is as follows: 12 parts of pitchstone ore in sand form powder, meerschaum 4 parts, bastard coal
6 parts of stone, Gypsum Fibrosum powder 20 parts, calcium stearate 6 parts, nano barium titanate aluminum fiber 3 parts, polyvinyl alcohol 6 parts, hydroxypropylcelluloether ether 3 parts,
Potassium sulfate 1 part, 2 parts of ammonium sulfate；
(2) mixture stirs, and whipping temp is 15-18 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610521223.1A CN106186793A (en) | 2016-07-02 | 2016-07-02 | A kind of cement expansive material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610521223.1A CN106186793A (en) | 2016-07-02 | 2016-07-02 | A kind of cement expansive material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106186793A true CN106186793A (en) | 2016-12-07 |
Family
ID=57466286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610521223.1A Pending CN106186793A (en) | 2016-07-02 | 2016-07-02 | A kind of cement expansive material |
Country Status (1)
| Country | Link |
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| CN (1) | CN106186793A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1607194A (en) * | 2003-10-14 | 2005-04-20 | 郭金华 | Low-alkali low-mixing cement expansive material |
| CN103011659A (en) * | 2012-12-21 | 2013-04-03 | 江西迪特科技有限公司 | Super retarding high-performance water reducer |
| CN103601413A (en) * | 2013-10-20 | 2014-02-26 | 青岛海伴诚远塑业有限公司 | Improved concrete anti-cracking modifier |
| CN103641376A (en) * | 2013-11-04 | 2014-03-19 | 青岛汇而通商贸有限公司 | Concrete crack resistance modifier |
| CN103937119A (en) * | 2014-02-26 | 2014-07-23 | 谢彪 | Medical-grade wide-waveband high-light avoiding performance polyvinyl chloride granula |
| CN104262133A (en) * | 2014-09-10 | 2015-01-07 | 江山市艺天科技有限公司 | Production method and equipment of granular calcium stearate |
| CN204174128U (en) * | 2014-09-10 | 2015-02-25 | 江山市艺天科技有限公司 | Particulate state calcium stearate production unit and tablets press |
| US20150135997A1 (en) * | 2012-05-22 | 2015-05-21 | The Curators Of The University Of Missouri | Internal curing composition for concrete mixtures |
| CN105130252A (en) * | 2015-09-02 | 2015-12-09 | 王嘉文 | Environment-friendly cement expanding agent |
-
2016
- 2016-07-02 CN CN201610521223.1A patent/CN106186793A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1607194A (en) * | 2003-10-14 | 2005-04-20 | 郭金华 | Low-alkali low-mixing cement expansive material |
| US20150135997A1 (en) * | 2012-05-22 | 2015-05-21 | The Curators Of The University Of Missouri | Internal curing composition for concrete mixtures |
| CN103011659A (en) * | 2012-12-21 | 2013-04-03 | 江西迪特科技有限公司 | Super retarding high-performance water reducer |
| CN103601413A (en) * | 2013-10-20 | 2014-02-26 | 青岛海伴诚远塑业有限公司 | Improved concrete anti-cracking modifier |
| CN103641376A (en) * | 2013-11-04 | 2014-03-19 | 青岛汇而通商贸有限公司 | Concrete crack resistance modifier |
| CN103937119A (en) * | 2014-02-26 | 2014-07-23 | 谢彪 | Medical-grade wide-waveband high-light avoiding performance polyvinyl chloride granula |
| CN104262133A (en) * | 2014-09-10 | 2015-01-07 | 江山市艺天科技有限公司 | Production method and equipment of granular calcium stearate |
| CN204174128U (en) * | 2014-09-10 | 2015-02-25 | 江山市艺天科技有限公司 | Particulate state calcium stearate production unit and tablets press |
| CN105130252A (en) * | 2015-09-02 | 2015-12-09 | 王嘉文 | Environment-friendly cement expanding agent |
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Application publication date: 20161207 |
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