CN102092997A - Prestressed concrete pipe grouting agent - Google Patents
Prestressed concrete pipe grouting agent Download PDFInfo
- Publication number
- CN102092997A CN102092997A CN2010105710846A CN201010571084A CN102092997A CN 102092997 A CN102092997 A CN 102092997A CN 2010105710846 A CN2010105710846 A CN 2010105710846A CN 201010571084 A CN201010571084 A CN 201010571084A CN 102092997 A CN102092997 A CN 102092997A
- Authority
- CN
- China
- Prior art keywords
- parts
- prestressed concrete
- concrete pipe
- agent
- mud jacking
- 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.)
- Granted
Links
- 239000011513 prestressed concrete Substances 0.000 title abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 17
- 239000002002 slurry Substances 0.000 abstract description 16
- 239000004568 cement Substances 0.000 abstract description 15
- 239000003795 chemical substances by application Substances 0.000 abstract description 15
- 239000000463 material Substances 0.000 abstract description 13
- 230000000740 bleeding effect Effects 0.000 abstract description 12
- 239000000843 powder Substances 0.000 abstract description 7
- 239000003638 chemical reducing agent Substances 0.000 abstract description 4
- 238000011049 filling Methods 0.000 abstract description 2
- 239000000839 emulsion Substances 0.000 abstract 2
- 229910021487 silica fume Inorganic materials 0.000 abstract 2
- 239000000853 adhesive Substances 0.000 abstract 1
- 230000001070 adhesive effect Effects 0.000 abstract 1
- 238000004140 cleaning Methods 0.000 abstract 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 11
- 239000002956 ash Substances 0.000 description 11
- 239000010703 silicon Substances 0.000 description 11
- 229910052710 silicon Inorganic materials 0.000 description 11
- 238000005260 corrosion Methods 0.000 description 7
- 230000007797 corrosion Effects 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 5
- 238000010276 construction Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 239000004816 latex Substances 0.000 description 5
- 229920000126 latex Polymers 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 4
- 230000008602 contraction Effects 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 230000008961 swelling Effects 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 239000004567 concrete Substances 0.000 description 3
- 230000002950 deficient Effects 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 235000002918 Fraxinus excelsior Nutrition 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000001913 cellulose Substances 0.000 description 2
- 229920002678 cellulose Polymers 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 238000002161 passivation Methods 0.000 description 2
- 241000370738 Chlorion Species 0.000 description 1
- 208000032544 Cicatrix Diseases 0.000 description 1
- 241000108463 Hygrophila <snail> Species 0.000 description 1
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 208000034189 Sclerosis Diseases 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910021346 calcium silicide Inorganic materials 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 239000002075 main ingredient Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 229920005646 polycarboxylate Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 231100000241 scar Toxicity 0.000 description 1
- 230000037387 scars Effects 0.000 description 1
- 239000003469 silicate cement Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 210000002435 tendon Anatomy 0.000 description 1
- 238000004154 testing of material Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- 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
Landscapes
- 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 provides a prestressed concrete pipe grouting agent. The grouting agent comprises the following components in parts by weight: 81.3-82.3 parts of cement, 4.0-5.0 parts of silica fume, 0.6-0.7 part of water reducing agent, 11-12 parts of expanding agent, 1.8-2.2 parts of redispersible emulsion powder and the balance of water, wherein the water cement ratio is 0.33-0.35. In the invention, a double-doping system of silica fume and emulsion powder is adopted, thus obviously increasing the strength of the grouting material, obviously cleaning away bleeding, reducing the brittleness coefficient of slurry and increasing the compactness, filling degree and adhesive force of slurry.
Description
Technical field
The present invention relates to prestressed concrete pipe road mud jacking material, relate in particular to a kind of post stressed concrete beam pipe mudjacking agent.
Background technology
Prestressed concrete is that active demand is healed the scars of war after World War II, develop rapidly from West Europe, so far from theory, design, material, technology to application in engineering, all obtain great development.The starting of China's prestressed concrete about late 10 years than West Europe, but development is rapid, number of applications is very big, over particularly past two, 30 years, China's Prestressed Concrete Bridges development is very fast, be that bridge type, span and construction technology and technical elements all have breakthrough development, the design of many Prestressed Concrete Bridges, operating technique is reached the international leading level.
Yet still having hysteresis trend aspect prestressed construction technology and the material.The material of prestressed concrete structure mud jacking particularly.Control and grouting result detect and lag behind relatively abroad.Only testing of materials few parameters is stipulated, and testing method unifies (as degree of mobilization) or accurate not to the utmost (as bleeding rate, rate of expansion) not to the utmost, so that cause quality of materials uneven.
The effect of prestress pipe mud jacking agent mainly contains: (1) prevents that the corrosion (2) of prestress steel synnema to providing effective bonding between presstressed reinforcing steel and the concrete, guaranteeing stress transmission fully between the two
In prestressed concrete construction; prestressed strand is heavily stressed following to corrosion and responsive; in case the corrosion consequence is very serious; owing in air, in the water, contain higher chlorion (cl) sulfate ion (SO4) and other etching mediums; and steel bundle its sealer after stretch-draw has gone to pot; and in blanking, with ground etc. is even contacting in various degree arranged in the lashing process, friction and even abrasion form surface corrosion.
Be further corrosion of prevention steel bundle and the sufficient stress transmission of assurance, the slurry of pipeline pneumatic mortar (1) must be closely knit, full, wraps up prestressing tendon fully; (2) slurry is alkalescence (there is passivation on steel bundle surface, provide protection); (3) has the intensity, elasticity, expansion (or not having contraction) property, cohesive force or the like of design requirements after the slurry sclerosis.
Based on the effect of mud jacking, to the basic demand of mud jacking material be 1, degree of mobilization is good, each position of plastic film capicitor that can free filling bending.2, no bleeding.3, do not have contraction, could guarantee that like this slurry of pipeline pneumatic mortar reaches fullness degree.And closely knit, full, wrap up prestressed strand fully.Also unlikely owing to bleeding, contraction produce the space, so the selenodont mud jacking.And the selenodont mud jacking will make prestressed strand lose protective barrier fully at this position.
Yet; in the post-tensioned prestressed concrete technology; when post-tensioned prestressed reinforcement is in non-level inclination position, multispan degree case of bending and plumbness; the bleeding of injection material can make the space after its evaporation lose the passivation protection of cement; reinforcing bar corrosion under high-stress state simultaneously very easily develops; this just causes steel bar corrosion position section damaged, and the safe life of prestressed structure and work reliability are on the hazard.
Summary of the invention
The invention provides the mud jacking agent of a kind of prestressed concrete pipe road, to overcome the above-mentioned defective that prior art exists.
In order to achieve the above object, the invention provides the mud jacking agent of a kind of prestressed concrete pipe road, comprise following components in part by weight:
81.3～82.3 parts of cement
4.0～5.0 parts of silicon ashes
0.6～0.7 part of water reducer
11～12 parts of swelling agents
1.8～2.2 parts of latex powder
Water surplus
Wherein water cement ratio is 0.30～0.36, and water cement ratio is meant the mass ratio of water and cement.
The preferred silicate cement of described cement;
The preferred amorphous soft silica of described silicon ash, wherein active constituent content is 81.3～82.3 parts;
The preferred polycarboxylate dehydragent of described water reducer;
The preferred HEA type of described swelling agent swelling agent;
Described water cement ratio preferred 0.33～0.35.
As further preferred scheme, can also comprise 0.05～0.1 part ether of cellulose in the component.
As preferred scheme further, each component concentration is preferably as follows in the described mud jacking agent: 4.0～5.0 parts of silicon ashes, and 0.6～0.7 part of water reducer, 11～12 parts of swelling agents, 1.8～2.2 parts of latex powder, wherein water cement ratio is 0.33～0.35.
Each component adopts conventional commercially available prod.
The preparation method of prestressed concrete pipe of the present invention road mud jacking agent adopts factory's unified metering addition means.
The present invention adopts that silicon ash and latex powder are two mixes system, the unexpected intensity that improves injection material, and can effectively remove bleeding, and reduce the slurry crumbly coefficient, improve slurry degree of compactness, fullness degree, improve the slurry cohesive force.Its mechanism is not fully aware of, may be that the two systems of mixing of silicon ash, polymkeric substance have been improved interface structure and the composition in the slurry, thereby interfacial adhesion and splitting resistance have been improved, because the silicon ash particle is very for a short time to be filled in (the relative silicon ash of the cement) space on every side that gathers materials the Ca thick with enrichment in the interface region (OH)
2The crystal reaction forms new calcium silicide hydrate, thereby not only improves gap structure, improves slurry intensity and has also strengthened anti-mixing property.And polymkeric substance mix the flexibility of having improved slurry, polymkeric substance and silicon ash be two to be mixed in the system, silicon ash and polymkeric substance when satisfying degree of mobilization, fullness degree beam workability, the interface structure compactness extent is better than the grout body construction.
In addition, suitable water cement ratio is the not most important condition of bleeding of grouting material.Usually as the cement of slurry main ingredient, its complete aquation required water amount is about 18%, i.e. w/c=0.18.But the contriver finds, adopt the two mud jacking agent of mixing system of silicon ash and latex powder, grouting material will guarantee the degree of mobilization that its construction is essential, its water cement ratio w/c need be controlled at 0.30～0.36, w/c≤0.30 degree of mobilization does not reach requirement, and＞0.36 easily generation bleeding, contraction, water cement ratio preferably is controlled between 35～36%.In prescription, add ether of cellulose in addition, can further improve the system degree of mobilization.
Embodiment
Provide preferred embodiment of the present invention below, to describe technical scheme of the present invention in detail.
Table 1 has provided the concrete component and the proportioning of embodiment 1～3 and Comparative Examples 1,2.
Table 1
Its degree of mobilization, bleeding rate, fullness degree test-results such as table 2, test specimen mechanical property test result such as table 3.
Degree of mobilization, bleeding rate, fullness degree are pressed the method for TB/T3192-2008 standard and are measured.
Resistance to compression, bending test are pressed the method for GB/T17671-1999 standard and are measured.Measure its 7 days, resistance to compression in 28 days, folding strength respectively.
Cohesion test is pressed the method for SD105 standard and is measured.
Table 2
| Degree of mobilization (s) | Bleeding rate (%) | Fullness degree | |
| Embodiment 1 | 17 | 0 | Qualified |
| Embodiment 2 | 18 | 0 | Qualified |
| Embodiment 3 | 23 | 0 | Qualified |
| Comparative Examples 1 | 18 | 0.3 | Defective |
| Comparative Examples 2 | 15 | 0.1 | Defective |
Table 3
By above-mentioned experimental result as can be known, the present invention adopts that silicon ash and latex powder are two mixes system, can significantly improve the intensity of injection material, and can effectively remove bleeding, reduces the slurry crumbly coefficient, improves the slurry fullness degree, improves the slurry cohesive force.
Claims (8)
1. a prestressed concrete pipe road mud jacking agent is characterized in that, comprises following components in part by weight:
81.3～82.3 parts of cement
4.0～5.0 parts of silicon ashes
0.6～0.7 part of water reducer
11～12 parts of swelling agents
1.8～2.2 parts of latex powder
Water surplus
Wherein water cement ratio is 0.33～0.35.
2. the mud jacking agent of prestressed concrete pipe according to claim 1 road is characterized in that, described cement is silicate cement.
3. the mud jacking agent of prestressed concrete pipe according to claim 1 road is characterized in that, described silicon ash is amorphous soft silica, 81.3～82.3 parts of active constituent contents.
4. the mud jacking agent of prestressed concrete pipe according to claim 1 road is characterized in that, described water reducer is a polycarboxylate dehydragent.
5. the mud jacking agent of prestressed concrete pipe according to claim 1 road is characterized in that, described swelling agent is a HEA type swelling agent.
6. the mud jacking agent of prestressed concrete pipe according to claim 1 road is characterized in that, described water cement ratio is 0.33～0.35.
7. according to each described prestressed concrete pipe road mud jacking agent of claim 1～6, it is characterized in that, also comprise 0.05～0.1 part ether of cellulose in the component.
8. the mud jacking agent of prestressed concrete pipe according to claim 7 road is characterized in that, comprises following components in part by weight: 4.0～5.0 parts of silicon ashes, 0.6～0.7 part of water reducer, 11～12 parts of swelling agents, 1.8～2.2 parts of latex powder, described water cement ratio is 0.33～0.35.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105710846A CN102092997B (en) | 2010-12-02 | 2010-12-02 | Prestressed concrete pipe grouting agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105710846A CN102092997B (en) | 2010-12-02 | 2010-12-02 | Prestressed concrete pipe grouting agent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102092997A true CN102092997A (en) | 2011-06-15 |
| CN102092997B CN102092997B (en) | 2013-04-17 |
Family
ID=44126285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105710846A Expired - Fee Related CN102092997B (en) | 2010-12-02 | 2010-12-02 | Prestressed concrete pipe grouting agent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102092997B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103224342A (en) * | 2013-04-22 | 2013-07-31 | 交通运输部公路科学研究所 | Restoration material of pavement cement concrete slab bottom |
| CN104163606A (en) * | 2014-07-29 | 2014-11-26 | 广西科技大学 | Checkable-plumpness prestressed duct grouting material and manufacture thereof, and method for prestressed duct grouting |
| CN104446259A (en) * | 2014-12-09 | 2015-03-25 | 鞍钢集团矿业公司 | Anchor rod anchoring agent applied to reinforcing underground broken rock body |
| CN104788052A (en) * | 2015-03-19 | 2015-07-22 | 绍兴文理学院 | Surface pore filling material for rock model structural plane and production process thereof |
| CN106242396A (en) * | 2016-07-28 | 2016-12-21 | 中国路桥工程有限责任公司 | Concrete pipeline mud-jacking agent and preparation method |
| CN106986609A (en) * | 2017-04-25 | 2017-07-28 | 浙江华鼎市政建设有限公司 | Bridge inherent stress mud-jacking and its construction technology |
| CN108164219A (en) * | 2018-01-17 | 2018-06-15 | 云南森博混凝土外加剂有限公司 | A kind of drop slurry agent applied in ultrahigh-strength self-compacting concrete |
| CN109400089A (en) * | 2018-10-29 | 2019-03-01 | 俞小峰 | A kind of concrete mud jacking agent and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5547504A (en) * | 1993-10-25 | 1996-08-20 | Board Of Trustees Operating Michigan State University | Non-shrink grout composition with gas forming additive |
| CN1559960A (en) * | 2004-02-17 | 2005-01-05 | 江苏博特新材料有限公司 | High performance grouting addition for concrete with post-tensioning binding prestressing force |
| CN101817656A (en) * | 2009-02-26 | 2010-09-01 | 北京东方雨虹防水技术股份有限公司 | Post stressed concrete beam pipe mudjacking agent |
-
2010
- 2010-12-02 CN CN2010105710846A patent/CN102092997B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5547504A (en) * | 1993-10-25 | 1996-08-20 | Board Of Trustees Operating Michigan State University | Non-shrink grout composition with gas forming additive |
| CN1559960A (en) * | 2004-02-17 | 2005-01-05 | 江苏博特新材料有限公司 | High performance grouting addition for concrete with post-tensioning binding prestressing force |
| CN101817656A (en) * | 2009-02-26 | 2010-09-01 | 北京东方雨虹防水技术股份有限公司 | Post stressed concrete beam pipe mudjacking agent |
Non-Patent Citations (1)
| Title |
|---|
| 《城市道桥与防洪》 20100831 黄冬等 《预应力混凝土桥梁孔道压浆材料的研制与应用》 第159-161页 1-8 , 第8期 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103224342A (en) * | 2013-04-22 | 2013-07-31 | 交通运输部公路科学研究所 | Restoration material of pavement cement concrete slab bottom |
| CN103224342B (en) * | 2013-04-22 | 2015-09-16 | 交通运输部公路科学研究所 | A kind of repair materials of Identification Beneath Concrete Slabs |
| CN104163606A (en) * | 2014-07-29 | 2014-11-26 | 广西科技大学 | Checkable-plumpness prestressed duct grouting material and manufacture thereof, and method for prestressed duct grouting |
| CN104446259A (en) * | 2014-12-09 | 2015-03-25 | 鞍钢集团矿业公司 | Anchor rod anchoring agent applied to reinforcing underground broken rock body |
| CN104788052A (en) * | 2015-03-19 | 2015-07-22 | 绍兴文理学院 | Surface pore filling material for rock model structural plane and production process thereof |
| CN106242396A (en) * | 2016-07-28 | 2016-12-21 | 中国路桥工程有限责任公司 | Concrete pipeline mud-jacking agent and preparation method |
| CN106986609A (en) * | 2017-04-25 | 2017-07-28 | 浙江华鼎市政建设有限公司 | Bridge inherent stress mud-jacking and its construction technology |
| CN108164219A (en) * | 2018-01-17 | 2018-06-15 | 云南森博混凝土外加剂有限公司 | A kind of drop slurry agent applied in ultrahigh-strength self-compacting concrete |
| CN109400089A (en) * | 2018-10-29 | 2019-03-01 | 俞小峰 | A kind of concrete mud jacking agent and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102092997B (en) | 2013-04-17 |
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Granted publication date: 20130417 Termination date: 20131202 |