CN102115314A - Duct grouting agent for post-tensioning prestressed concrete beams - Google Patents
Duct grouting agent for post-tensioning prestressed concrete beams Download PDFInfo
- Publication number
- CN102115314A CN102115314A CN2009102589471A CN200910258947A CN102115314A CN 102115314 A CN102115314 A CN 102115314A CN 2009102589471 A CN2009102589471 A CN 2009102589471A CN 200910258947 A CN200910258947 A CN 200910258947A CN 102115314 A CN102115314 A CN 102115314A
- Authority
- CN
- China
- Prior art keywords
- component
- grouting agent
- agent
- hole path
- path pressure
- 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
-
- 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
Abstract
The invention relates to a duct grouting agent for post-tensioning prestressed concrete beams, which is proportionally mixed with cement and water at a construction site for duct grouting and filling of the prestressed concrete beams. The duct grouting agent is characterized in that the duct grouting agent comprises the following components: 2 to 11 percent of water-reducing component, 0.3 to 0.6 percent of expansion component at a plastic stage, 30 to 40 percent of water-retaining component, 0.2 to 0.5 percent of antifoaming component, 0 to 0.4 percent of retarding component and 40 to 55 percent of expansion component at a later stage, wherein all the components are weighed according to the weight percentages and mixed to obtain the duct grouting agent. The duct grouting agent has the advantages of wide raw material sources, low cost, simpleness and convenience in operation, no pollution, high operability, good and adjustable fluidity, no bleeding under constant pressure, low bleeding rate under pressure, good uniformity, filling degree and volume stability, good protective effect to prestressed steel bars and no rust.
Description
Technical field
The high-performance mud jacking agent that The present invention be directed to posttension precast beam hole path pressure grouting in the high speed passenger dedicated railway engineering and develop, the cement direct and working-yard mixes and stirs use.Slurry has good fluidity, early strong, high-strength, does not have characteristics such as contraction, is ideal prestress hole path pressure grouting material.Also can be used for other prestressed structure hole path pressure groutings such as vehicular bridge in the common engineering.
Technical background
As the main linker of multiple structure; the prestress hole path pressure grouting material not only can be protected presstressed reinforcing steel not to be subjected to the infringement of extraneous harmful ion and corrode; guarantee the safe life of prestressed concrete structure and member; and can make presstressed reinforcing steel and concrete good combination; guarantee effectively stress transmission between presstressed reinforcing steel and the concrete member; eliminating stress changes the fatigure failure that ground tackle is caused, and improves structure reliability and weather resistance.The used hole path pressure grouting agent performance of common engineering is low, and volume stability, flowability and other performance can't satisfy the high request of high speed passenger transportation railway engineering.Technological standard among the TB/T3192-2008 " railway post-tensioned prestressing concrete beam pipeline pressure drop technical qualification " of the new promulgation of the present invention's combination is as goal in research.The high workability that guarantees slurry under no bleeding, shrinkage-free prerequisite is a research of technique point of the present invention.Standard code is not handy to contain high-alkali swelling agent or aluminium powder swelling agent as expansion sources.The present invention has sought a kind of new plastic stage swelling agent.
Summary of the invention
1. high-performance precast beam hole path pressure grouting agent is characterized in that raw material consists of diminishing component, plastic stage expansion component, late expansion component, water-retaining component, slow setting component, froth breaking component.Its proportioning raw materials is by weight:
Diminishing component 2～11%,
Late expansion component 40～55%,
Plastic stage expansion component 0.3～0.6%,
Water-retaining component 30～40%,
Froth breaking component 0.2～0.5%,
Transfer and coagulate component 0.0～0.4%,
2. according to claims 1 described hole path pressure grouting agent, it is characterized in that the diminishing component is a powdery naphthalene sulfonic salt high efficiency water reducing agent, one or more compositions in sulfamate water reducer or the polycarboxylic acid series high efficiency water reducing agent.
3. according to claims 1 described hole path pressure grouting agent, it is characterized in that the late expansion component is that swelling agent is formed.
4. according to claims 1 described hole path pressure grouting agent, it is characterized in that the plastic expansion component is plastic expansion agent composition.
5. according to claims 1 described hole path pressure grouting agent, it is characterized in that water-retaining component is one or more compositions in SILICA FUME, flyash, breeze, methylcellulose gum, the carboxymethyl cellulose
6. according to claims 1 described hole path pressure grouting agent, it is characterized in that the froth breaking component is that defoamer is formed
7. according to claims 1 described hole path pressure grouting agent, it is characterized in that it is that retardant or hardening accelerator are formed that accent coagulates component, as one or more compositions in citric acid, Trisodium Citrate, tripoly phosphate sodium STPP, the nitrocalcite.
8. according to claims 1 described high-performance hole path pressure grouting agent, it is characterized in that: take by weighing in proportion respectively to mix in proportion again behind each component mixing and make the hole path pressure grouting material after mixing water in the PO42.5 cement, by vacuum aid grouting technology, be pressed into prestressed girder body opening road.
The present invention has following significant advantage compared with prior art:
1. raw material sources are extensive, and cost is low.Raw material is a building materials raw material commonly used such as SILICA FUME and flyash and high efficiency water reducing agent etc.
2. easy and simple to handle pollution-free; Directly mixing and stirring the back mud jacking with cement, water in proportion at the construction field (site) gets final product.
3. operability height, good fluidity and adjustable can guarantee the 2h operating time, and normal pressure is bleeding not, and the pressure bleeding rate is low;
4. homogeneity, fullness degree and volume stability are good, and sclerosis back microdilatancy does not have contraction;
5. product construction temperature wide (5～35 ℃) is good to the protection of presstressed reinforcing steel non-corroding.
Embodiment:
Embodiment one:
The raw material of this hole path pressure grouting agent is formed proportioning: diminishing component 100kg, late expansion component 550kg, and plastic stage expansion component 2kg, water-retaining component 343kg, froth breaking component 3kg transfers and coagulates component 2kg.
Embodiment two:
The raw material of this hole path pressure grouting agent is formed proportioning: diminishing component 110kg, late expansion component 550kg, and plastic stage expansion component 5kg, water-retaining component 330kg, froth breaking component 5kg transfers and coagulates component 0kg.
Embodiment three:
The raw material of this hole path pressure grouting agent is formed proportioning: diminishing component 100kg, late expansion component 500kg, and plastic stage expansion component 5kg, water-retaining component 387kg, froth breaking component 5kg transfers and coagulates component 3kg.
Above-mentioned each component mixed make the present invention.The present invention who adopts above-mentioned prescription to make forms grouting material after mixing cement (mixing 10% outward) and water.According to the testing method among the TB/T3192-2008 " railway post-tensioned prestressing concrete beam pipeline pressure drop technical qualification ", detected result is as follows:
Claims (8)
1. high-performance precast beam hole path pressure grouting agent is characterized in that raw material consists of diminishing component, plastic expansion component, late expansion component, water-retaining component, slow setting component, froth breaking component.Its proportioning raw materials is by weight:
Diminishing component 2～11%,
Late expansion component 40～55%,
Plastic stage expansion component 0.3～0.6%,
Water-retaining component 30～40%,
Froth breaking component 0.2～0.5%,
Transfer and coagulate component 0.0～0.4%.
2. according to claims 1 described hole path pressure grouting agent, it is characterized in that the diminishing component is a powdery naphthalene sulfonic salt high efficiency water reducing agent, one or more compositions in sulfamate water reducer or the polycarboxylic acid series high efficiency water reducing agent.
3. according to claims 1 described hole path pressure grouting agent, it is characterized in that the late expansion component is that swelling agent is formed.
4. according to claims 1 described hole path pressure grouting agent, it is characterized in that the plastic expansion component is plastic expansion agent composition.
5. according to claims 1 described hole path pressure grouting agent, it is characterized in that water-retaining component is one or more compositions in SILICA FUME, flyash, breeze, methylcellulose gum, the carboxymethyl cellulose.
6. according to claims 1 described hole path pressure grouting agent, it is characterized in that the froth breaking component is that defoamer is formed.
7. according to claims 1 described hole path pressure grouting agent, it is characterized in that it is that retardant or hardening accelerator are formed that accent coagulates component, as one or more compositions in citric acid, Trisodium Citrate, tripoly phosphate sodium STPP, nitrocalcite, the SODIUMNITRATE.
8. according to claims 1 described high-performance hole path pressure grouting agent, it is characterized in that: take by weighing in proportion respectively to mix in proportion again behind each component mixing and make the hole path pressure grouting material after mixing water in the PO42.5 cement, slurry is pressed into prestressed girder body opening road with mudjack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102589471A CN102115314A (en) | 2009-12-31 | 2009-12-31 | Duct grouting agent for post-tensioning prestressed concrete beams |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102589471A CN102115314A (en) | 2009-12-31 | 2009-12-31 | Duct grouting agent for post-tensioning prestressed concrete beams |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102115314A true CN102115314A (en) | 2011-07-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102589471A Pending CN102115314A (en) | 2009-12-31 | 2009-12-31 | Duct grouting agent for post-tensioning prestressed concrete beams |
Country Status (1)
| Country | Link |
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| CN (1) | CN102115314A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102584101A (en) * | 2012-01-20 | 2012-07-18 | 南京瑞迪高新技术有限公司 | Special grouting agent for post-tensioned prestressed concrete beams of highway bridges and culverts and preparation method thereof |
| CN103073217A (en) * | 2013-01-07 | 2013-05-01 | 乌鲁木齐市建宝天化新材料科技有限公司 | Special porelike grouting agent for bridge concrete |
| CN103172296A (en) * | 2011-12-21 | 2013-06-26 | 中冶建筑研究总院有限公司 | Post-tensioned pre-stressed concrete beam pipeline grouting agent |
| CN103193414A (en) * | 2013-03-08 | 2013-07-10 | 蒋成飞 | Post-tensioning prestressed concrete beam pore high-strength grouting agent |
| CN103496944A (en) * | 2013-10-10 | 2014-01-08 | 丁蕴斌 | Special grouting agent for traffic engineering |
| CN103910512A (en) * | 2014-03-13 | 2014-07-09 | 东南大学 | Post-tensioned prestressed pore channel grouting material |
| CN103922633A (en) * | 2014-03-13 | 2014-07-16 | 南京瑞迪高新技术有限公司 | Prestressed duct grouting agent with self-repairing function |
| CN103992057A (en) * | 2014-06-10 | 2014-08-20 | 十九冶成都建设有限公司 | Method for inhibiting hysteretic bleeding of concrete |
| CN104003639A (en) * | 2014-05-09 | 2014-08-27 | 中国铁道科学研究院铁道建筑研究所 | Overall-process anti-shrink agent for cement-based material and preparation method thereof |
| CN105967591A (en) * | 2016-05-05 | 2016-09-28 | 武汉华中科大土木工程检测中心 | High-fluidity duct grouting material suitable for ultra-long pre-stressed ducts, and preparation method thereof |
| CN106116322A (en) * | 2016-06-14 | 2016-11-16 | 湖北中桥科技有限公司 | High fluidity ungauged regions grouting agent and preparation method 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 |
-
2009
- 2009-12-31 CN CN2009102589471A patent/CN102115314A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103172296B (en) * | 2011-12-21 | 2014-08-27 | 中冶建筑研究总院有限公司 | Post-tensioned pre-stressed concrete beam pipeline grouting agent |
| CN103172296A (en) * | 2011-12-21 | 2013-06-26 | 中冶建筑研究总院有限公司 | Post-tensioned pre-stressed concrete beam pipeline grouting agent |
| CN102584101B (en) | 2012-01-20 | 2013-05-15 | 南京瑞迪高新技术有限公司 | Special grouting agent for post-tensioned prestressed concrete beams of highway bridges and culverts and preparation method thereof |
| CN102584101A (en) * | 2012-01-20 | 2012-07-18 | 南京瑞迪高新技术有限公司 | Special grouting agent for post-tensioned prestressed concrete beams of highway bridges and culverts and preparation method thereof |
| CN103073217A (en) * | 2013-01-07 | 2013-05-01 | 乌鲁木齐市建宝天化新材料科技有限公司 | Special porelike grouting agent for bridge concrete |
| CN103073217B (en) * | 2013-01-07 | 2015-07-15 | 乌鲁木齐市建宝天化新材料科技有限公司 | Special porelike grouting agent for bridge concrete |
| CN103193414A (en) * | 2013-03-08 | 2013-07-10 | 蒋成飞 | Post-tensioning prestressed concrete beam pore high-strength grouting agent |
| CN103496944A (en) * | 2013-10-10 | 2014-01-08 | 丁蕴斌 | Special grouting agent for traffic engineering |
| CN103910512A (en) * | 2014-03-13 | 2014-07-09 | 东南大学 | Post-tensioned prestressed pore channel grouting material |
| CN103922633A (en) * | 2014-03-13 | 2014-07-16 | 南京瑞迪高新技术有限公司 | Prestressed duct grouting agent with self-repairing function |
| CN104003639A (en) * | 2014-05-09 | 2014-08-27 | 中国铁道科学研究院铁道建筑研究所 | Overall-process anti-shrink agent for cement-based material and preparation method thereof |
| CN103992057A (en) * | 2014-06-10 | 2014-08-20 | 十九冶成都建设有限公司 | Method for inhibiting hysteretic bleeding of concrete |
| CN105967591A (en) * | 2016-05-05 | 2016-09-28 | 武汉华中科大土木工程检测中心 | High-fluidity duct grouting material suitable for ultra-long pre-stressed ducts, and preparation method thereof |
| CN106116322A (en) * | 2016-06-14 | 2016-11-16 | 湖北中桥科技有限公司 | High fluidity ungauged regions grouting agent and preparation method 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 |
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| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110706 |