CN104876496A - Novel bridge post-tensioned prestressed tunnel grouting material and preparation method thereof - Google Patents
Novel bridge post-tensioned prestressed tunnel grouting material and preparation method thereof Download PDFInfo
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- CN104876496A CN104876496A CN201410698930.9A CN201410698930A CN104876496A CN 104876496 A CN104876496 A CN 104876496A CN 201410698930 A CN201410698930 A CN 201410698930A CN 104876496 A CN104876496 A CN 104876496A
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- portland clinker
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Abstract
The invention belongs to the technical field of bridge construction materials and relates to a novel bridge post-tensioned prestressed tunnel grouting material and a preparation method thereof. The novel bridge post-tensioned prestressed tunnel grouting material comprises 55-85% of portland cement clinker, 5-25% of ore powder and 5-25% of a grouting agent. The novel bridge post-tensioned prestressed tunnel grouting material is prepared by simple processes, does not contain gypsum, fly ash, vulcanic ash and light substances of a grouting agent, does not produce laitance at the highest point of a curve pipe under pressure in bridge post-tensioned prestressed tunnel grouting and in a voltage stabilization period and in a hardening period, has high strength, does not cause layering after secondary supplied grouting liquid hardening in grouting liquid supply treatment, effectively prevents prestressed strand corrosion and fracture, produces great influence on bridge structure safety and endurance and has a wide popularization meaning.
Description
Technical field
The invention belongs to bridge construction field of material technology, be specifically related to a kind of novel bridge back-tension prestressed channel mudjacking material and preparation method thereof.
Background technology
There is the laitance of some amount in current bridge prestress pore channel mud jacking construction process at the vertex of curvilinear conduit, this laitance is mainly from the light materials in grouting material starting material, and intensity is low and loose.These light materials can form floating under the effect of the pressure and in the voltage stabilizing phase in mud jacking process, and the bleeding produced under pressure in process of setting also can drive light materials to float.These light materials comprise: the light materials in gypsum, flyash, volcanic ash and grouting agent; And look duct length, the curve discrepancy in elevation, the kind of grouting material and have difference, the laitance thickness of generation is generally 0.3mm ~ 30mm.According to related request, the closely knit situation of mud jacking should be spot-check after mud jacking by inspection window, if any unreal, benefit Dispose by grouting should be carried out in time.And find in a line construction process, at the uncompacted position of mud jacking, although carried out benefit Dispose by grouting, but due to the existence of this one deck laitance, badly influence the effect of ftercompction slurry, and this one deck laitance intensity is low and loose, cause the demixing phenomenon after secondary ftercompction grout hardens, jeopardize the corrosion of prestress steel hinge line, even cause steel hinge line to rupture, and have influence on security, the weather resistance of bridge structure.
Summary of the invention
For problems of the prior art, the object of the invention is to provide a kind of novel bridge back-tension prestressed channel mudjacking material and preparation method thereof.
Described a kind of novel bridge back-tension prestressed channel mudjacking material, it is characterized in that this grouting material is made up of Portland clinker, breeze, grouting agent, the proportioning of described Portland clinker, breeze, grouting agent is: Portland clinker 55% ~ 85%, breeze 5% ~ 25% grouting agent 5% ~ 25%.
Described novel bridge back-tension prestressed channel mudjacking material, is characterized in that described Portland clinker, breeze, grouting agent proportioning are preferably: Portland clinker 60% ~ 80%, breeze 10% ~ 20%, grouting agent 10% ~ 20%.
Described novel bridge back-tension prestressed channel mudjacking material, is characterized in that the preferred proportioning of described Portland clinker, breeze, grouting agent is: Portland clinker 65% ~ 75%, breeze 12% ~ 18%, grouting agent 12% ~ 18%.
Described novel bridge back-tension prestressed channel mudjacking material, is characterized in that the best proportioning of described Portland clinker, breeze, grouting agent is: Portland clinker 70%, breeze 15%, grouting agent 15%.
The preparation method of described novel bridge back-tension prestressed channel mudjacking material, is characterized in that described Portland clinker evenly mixes and stirs obtained by grinding and described breeze, grouting agent.
Above-mentioned novel bridge back-tension prestressed channel mudjacking material, technique is simple, crucial not containing the light materials in gypsum, flyash, volcanic ash and grouting agent, under the effect of the pressure and in voltage stabilizing phase, hardening period in bridge prestress pore channel mud jacking process, all can not produce laitance at the vertex of curvilinear conduit, intensity is high, also the demixing phenomenon after two layers of grout hardens can not be caused when mending Dispose by grouting, effectively prevent the corrosion of prestress steel hinge line, fracture, to the security of bridge structure, weather resistance, there is great effect, possess the meaning extensively promoted.
Embodiment
Below by way of specific embodiment, the present invention is described in further detail.
Embodiment 1:
A kind of novel bridge back-tension prestressed channel mudjacking material, is made up of Portland clinker, breeze, grouting agent, according to Portland clinker 55% ~ 85%, breeze 5% ~ 25%, grouting agent 5% ~ 25%, prepares; First Portland clinker is ground, then the breeze prepared, grouting agent are added Portland clinker and evenly mix and stir, thus this grouting material obtained.
Embodiment 2:
A kind of novel bridge back-tension prestressed channel mudjacking material, is made up of Portland clinker, breeze, grouting agent, also according to Portland clinker 60% ~ 80%, breeze 10% ~ 20%, grouting agent 10% ~ 20%, can prepares; First Portland clinker is ground, then the breeze prepared, grouting agent are added Portland clinker and evenly mix and stir, thus this grouting material obtained.
Embodiment 3:
A kind of novel bridge back-tension prestressed channel mudjacking material, is made up of Portland clinker, breeze, grouting agent, also according to Portland clinker 65% ~ 75%, breeze 12% ~ 18%, grouting agent 12% ~ 18%, can prepares; First Portland clinker is ground, then the breeze prepared, grouting agent are added Portland clinker and evenly mix and stir, thus this grouting material obtained.
Embodiment 4:
A kind of novel bridge back-tension prestressed channel mudjacking material, is made up of Portland clinker, breeze, grouting agent, preferably according to Portland clinker 70%, breeze 15%, grouting agent 15%, prepares; First Portland clinker is ground, then the breeze prepared, grouting agent are added Portland clinker and evenly mix and stir, thus this grouting material obtained.
Portland clinker is with Wingdale and clay for main raw material, through broken, batching, levigately make raw material, then calcining in cement kiln.The material powder that breeze obtains after generally referring to and exploitation ore out being carried out grinding and processing.Grouting agent has microdilatancy, ungauged regions, large flowing, self-compacting, extremely low bleeding rate, fullness degree is high, intensity is high, antirust resistance rust, low alkali out of chloride, bond degree are high, the premium properties of environmental protection, oxide-free, muriate, sulphite and nitrite etc. are harmful to component to reinforcing bar, the grouting agent refined by high-performance plastic agent, tensio-active agent, silico-calcium micro-expanding agent, hydration inhibitors, migration-type rust inhibitor, nano level mineral sial calcium iron powder, stablizer or with the refining grouting materials be composited such as low alkali low-heat portland cement.Portland clinker in above-described embodiment, breeze, grouting agent all can directly bought on the market.
Claims (5)
1. a novel bridge back-tension prestressed channel mudjacking material, is characterized in that this grouting material is made up of Portland clinker, breeze, grouting agent, and the proportioning of described Portland clinker, breeze, grouting agent is:
Portland clinker 55% ~ 85%
Breeze 5% ~ 25%
Grouting agent 5% ~ 25%.
2. novel bridge back-tension prestressed channel mudjacking material according to claim 1, is characterized in that described Portland clinker, breeze, grouting agent proportioning are:
Portland clinker 60% ~ 80%
Breeze 10% ~ 20%
Grouting agent 10% ~ 20%.
3. novel bridge back-tension prestressed channel mudjacking material according to claim 1, is characterized in that described Portland clinker, breeze, grouting agent proportioning are:
Portland clinker 65% ~ 75%
Breeze 12% ~ 18%
Grouting agent 12% ~ 18%.
4. novel bridge back-tension prestressed channel mudjacking material according to claim 1, is characterized in that described Portland clinker, breeze, grouting agent proportioning are:
Portland clinker 70%
Breeze 15%
Grouting agent 15%.
5. the preparation method of the novel bridge back-tension prestressed channel mudjacking material according to claim 1 or 2 or 3 or 4, is characterized in that described Portland clinker evenly mixes and stirs obtained by grinding and described breeze, grouting agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410698930.9A CN104876496B (en) | 2014-11-28 | 2014-11-28 | A kind of bridge back-tension prestressed channel mudjacking material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410698930.9A CN104876496B (en) | 2014-11-28 | 2014-11-28 | A kind of bridge back-tension prestressed channel mudjacking material and preparation method thereof |
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| Publication Number | Publication Date |
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| CN104876496A true CN104876496A (en) | 2015-09-02 |
| CN104876496B CN104876496B (en) | 2017-09-12 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102351485A (en) * | 2011-07-08 | 2012-02-15 | 王小清 | Grouting material, premix of grouting material, and preparation method of premix |
| CN102531502A (en) * | 2012-03-02 | 2012-07-04 | 河南省交通科学技术研究院有限公司 | Post-tensioning prestressed concrete porelike grouting agent and preparation method thereof, and grouting material |
| CN103435301A (en) * | 2013-08-16 | 2013-12-11 | 武汉格瑞林建材科技股份有限公司 | Upper-flow-regime micro-expanding post-tensioning prestressed porelike grouting agent and preparation method thereof |
| JP2014019588A (en) * | 2012-07-12 | 2014-02-03 | Ube Ind Ltd | Paste composition and mortar composition |
| CN103570307A (en) * | 2012-07-25 | 2014-02-12 | 陕西通宇新材料有限公司 | Anticorrosion rust-proof pre-stressed duct grouting material |
-
2014
- 2014-11-28 CN CN201410698930.9A patent/CN104876496B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102351485A (en) * | 2011-07-08 | 2012-02-15 | 王小清 | Grouting material, premix of grouting material, and preparation method of premix |
| CN102531502A (en) * | 2012-03-02 | 2012-07-04 | 河南省交通科学技术研究院有限公司 | Post-tensioning prestressed concrete porelike grouting agent and preparation method thereof, and grouting material |
| JP2014019588A (en) * | 2012-07-12 | 2014-02-03 | Ube Ind Ltd | Paste composition and mortar composition |
| CN103570307A (en) * | 2012-07-25 | 2014-02-12 | 陕西通宇新材料有限公司 | Anticorrosion rust-proof pre-stressed duct grouting material |
| CN103435301A (en) * | 2013-08-16 | 2013-12-11 | 武汉格瑞林建材科技股份有限公司 | Upper-flow-regime micro-expanding post-tensioning prestressed porelike grouting agent and preparation method thereof |
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| CN104876496B (en) | 2017-09-12 |
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Inventor after: Chen Xigui Inventor after: Chen Yuhao Inventor after: Chen Yang Inventor after: Chen Wanli Inventor after: Lu Chaoyang Inventor after: Liu Meiping Inventor before: Chen Xigui Inventor before: Chen Yuhao |
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Effective date of registration: 20200310 Address after: 200000 Building 1, No. 588, xupan Road, Xuhang Town, Jiading District, Shanghai Patentee after: Shanghai Baosheng New Building Materials Co., Ltd. Address before: Taizhou City, Zhejiang Province, 317000 coastal city Zhang Yang Lu Oriental Garden B-5 Patentee before: Chen Xigui |