CN103553472A - Thixotropic cement paste for prestressed pipe grouting and preparation method thereof - Google Patents
Thixotropic cement paste for prestressed pipe grouting and preparation method thereof Download PDFInfo
- Publication number
- CN103553472A CN103553472A CN201310532588.0A CN201310532588A CN103553472A CN 103553472 A CN103553472 A CN 103553472A CN 201310532588 A CN201310532588 A CN 201310532588A CN 103553472 A CN103553472 A CN 103553472A
- Authority
- CN
- China
- Prior art keywords
- grout
- thixotropic
- cement
- slurry
- water
- 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
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses thixotropic cement paste for prestressed pipe grouting. The cement paste consists of the following components in parts by weight: 800-1200 parts of cement, 280-330 parts of water, 15-25 parts of water reducing agent, 3-10 parts of retarder and 2-15 parts of thixotropic agent. The preparation method comprises the following steps: (1) adding the water and the water reducing agent in a stirrer and stirring for 15 seconds; (2) adding the cement while stirring, than stirring for 5 minutes, wherein the temperature is 18-26 DEG C and the fluidity is 11-14 seconds; (3) standing the cement paste for 45 minutes; (4) adding the retarder into the cement paste and stirring for 2 minutes to prepare retarding paste, wherein the fluidity is 10-14 seconds; (5) transporting the retarding paste to a mixing plant and detecting the fluidity; and (6) adding the thixotropic agent when the fluidity is 12.5-13.5 seconds, stirring for 15 seconds, thus obtaining thixotropic paste, wherein the viscosity is controlled to be 900-1200cN.cm. The thixotropic paste has the characteristics of small volume change, high rupture strength, high compressive strength and small shrinkage, and various technical requirements for paste for grouting of prestressed horizontal pipelines and Gamma pipelines in a containment of a nuclear island of a nuclear power station can be met.
Description
Technical field
The present invention relates to building material technical field, relate in particular to a kind of prestress pipe grouting thixotropic grout and preparation method thereof.
Background technology
EPR nuclear island of nuclear power station inner containment adopts post-tension prestressed concrete construction technique; lashing steel strand stretch-draw in reserved prestress pipe after inner containment concrete construction completes is then filled grout in order to protect steel strand not corroded by the external world in pipeline.
Here said grout is divided into two kinds, and a kind of is slow setting slurry, and another kind is thixotroping slurry.Slow setting slurry is for the grouting of vertical vertical duct, and thixotroping slurry is for the grouting of horizontal pipe and gamma pipeline.
Yet current domestic technological standard or the quality control file that prestress grout is relevant that do not have, normally directly quotes Europe superscript or method mark.And the domestic method standard of also not preparing about prestress grout, so the physical and chemical performance of the thixotroping making slurry is widely different, affected the needs of construction.
Summary of the invention
The object of the invention is development and obtain thixotropic grout and concrete preparation method thereof for a kind of prestress pipe grouting, can meet the various technical requirementss of slurry for nuclear island of nuclear power station inner containment stress distribution pipeline pipeline and gamma duct grouting, and can in equal similar engineering afterwards, promote the use of.
The technical solution adopted for the present invention to solve the technical problems is:
Prestress pipe grouting of the present invention consists of with the weight part of thixotropic grout:
Cement 800-1200
Water 280-330
Water reducer 15-25
Retardant 3-10
Thixotropic agent 2-15.
Preferred:
Cement 1000
Water 295-315
Water reducer 19
Retardant 6
Thixotropic agent 5-9.
Wherein, cement is No. 42.5 cement, Cl-<0.05% in cement, S2-<0.01%; Water reducer: the CONPLAST SP337 that Guangzhou Fu Sile produces; Retardant: the CONPLAST RP264 that Guangzhou Fu Sile produces; The Cemethix F that thixotropic agent: Freyssinet produces.
Prestress pipe grouting of the present invention comprises the following steps by the preparation method of thixotropic grout:
(1) in stirrer, add water and water reducer, stir 15s, it is fully mixed with water;
(2) under ceaselessly stirring, slowly add cement, after adding, then continue to stir 5min, make grout, controlling grout temperature is 18 ℃-26 ℃, controls the degree of mobilization of grout at 11s-14s;
(3) by the standing 45min of grout;
(4) then in grout, add retardant, then stir 2min, make slow setting slurry, control the degree of mobilization of slow setting slurry at 10s-14s;
(5) the slow setting slurry preparing is transported to thixotroping slurry stirring station, and detects the degree of mobilization of slow setting slurry;
(6) when the degree of mobilization of slow setting slurry is during at 12.5s-13.5s, add thixotropic agent, stir 15s, make thixotroping slurry, control the viscosity of thixotroping slurry at 900-1200cN.cm.
With thixotropic grout, the viscosity when pouring into entrance is 150-350 cN.cm in prestress pipe grouting of the present invention.
Prestress pipe grouting of the present invention has the following advantages with thixotropic grout:
It is little that thixotroping slurry of the present invention has volume change, High anti bending strength, ultimate compression strength is high, the feature that shrinkage is little, can meet the various technical requirementss of slurry for nuclear island of nuclear power station inner containment stress distribution pipeline and gamma duct grouting, and can in equal similar engineering afterwards, promote the use of.
Embodiment
The following examples are to describe in further detail of the present invention.
Embodiment 1
Consist of (Kg) of thixotropic grout for 1.1 prestress pipe grouting:
Cement 800
Water 280
Water reducer 15
Retardant 3
Thixotropic agent 2
1.2 preparation method
(1) in stirrer, add water and water reducer, stir 15s, it is fully mixed with water;
(2) under ceaselessly stirring, slowly add cement, after adding, then continue to stir 5min, make grout, controlling grout temperature is 18 ℃-26 ℃, controls the degree of mobilization of grout at 11s-14s;
(3) by the standing 45min of grout;
(4) then in grout, add retardant, then stir 2min, make slow setting slurry, control the degree of mobilization of slow setting slurry at 10s-14s;
(5) the slow setting slurry preparing is transported to thixotroping slurry stirring station, and detects the degree of mobilization of slow setting slurry;
(6) when the degree of mobilization of slow setting slurry is during at 12.5s-13.5s, add thixotropic agent, stir 15s, make thixotroping slurry, control the viscosity of thixotroping slurry at 900-1200cN.cm.
With thixotropic grout, the viscosity when pouring into entrance is 150-350 cN.cm in prestress pipe grouting of the present invention.
Embodiment 2
Consist of (Kg) of thixotropic grout for 2.1 prestress pipe grouting:
Cement 1200
Water 330
Water reducer 25
Retardant 10
Thixotropic agent 15
2.2 preparation method
Preparation method is with 1.2 of embodiment 1.
Embodiment 3
Consist of (Kg) of thixotropic grout for 3.1 prestress pipe grouting:
Cement 1000
Water 305
Water reducer 19
Retardant 6
Thixotropic agent 7
3.2 preparation method
Preparation method is with 1.2 of embodiment 1.
The performance of embodiment 4 thixotropic grouts
It is as shown in table 1 that prestress pipe grouting prepared by embodiment 1-3 is carried out detected result with thixotropic grout:
The performance of thixotropic grout prepared by table 1 embodiment 1-3
The performance of thixotropic grout prepared by table 1 embodiment 1-3
| Test subject | Embodiment 1 | Embodiment 2 | Embodiment 3 |
| Initial viscosity (cN.cm) | 1038 | 1125 | 956 |
| Grout pipe entrance viscosity (cN.cm) | 264 | 324 | 178 |
| 3h bleeding (%) | 0.18 | 0.14 | 0.23 |
| 24h bleeding | Blot | Blot | Blot |
| Volume change (%) | 1 | 2 | 3 |
| 28 days folding strengths (Mpa) | 5 | 7 | 6 |
| 28 days ultimate compression strength (Mpa) | 37 | 36 | 39 |
| 28 days capillary water absorption (g/cm 2） | 0.8 | 0.5 | 0.6 |
| 28 days drying shrinkage (μ m/m) | 3210 | 3426 | 3316 |
| Presetting period (h) | 4 | 4 | 5 |
| Cl -Total amount (%) | 0.07 | 0.06 | 0.05 |
| S 2-Total amount (%) | 0.008 | 0.004 | 0.007 |
| SO 3Total amount (%) | 2.6 | 3.2 | 4.1 |
As can be seen from Table 1, prestress pipe grouting prepared by embodiment 1-3 meets the requirement of EPR nuclear power technology standard with thixotropic grout, the prestressed grouting of manufacture of the present invention is starched each stable performance with thixotroping, be short of at home under the unfavorable situation of prestress pipe grouting with grout Its Relevant Technology Standards, the present invention has formed the preparation method of cement slurry for a set of complete prestress pipe grouting, not only met the requirement of nuclear power construction technology, but also for establishment in the future, about prestress pipe, grouting provides certain foundation by the domestic technique standard of cement slurry.
Although illustrated and described embodiments of the invention, for the ordinary skill in the art, be appreciated that without departing from the principles and spirit of the present invention and can carry out multiple variation, modification, replacement and modification to these embodiment, scope of the present invention is limited by claims and equivalent thereof.
Claims (8)
1. a thixotropic grout is used in prestress pipe grouting, it is characterized in that: the weight part of this grout consists of:
Cement 800-1200
Water 280-330
Water reducer 15-25
Retardant 3-10
Thixotropic agent 2-15.
2. thixotropic grout is used in a kind of prestress pipe grouting as claimed in claim 1, it is characterized in that: the weight part of this grout consists of:
Cement 1000
Water 295-315
Water reducer 19
Retardant 6
Thixotropic agent 5-9.
3. thixotropic grout is used in a kind of prestress pipe grouting as claimed in claim 1, it is characterized in that: cement is No. 42.5 cement, Cl in cement
-<0.05%, S
2-<0.01%.
4. thixotropic grout is used in a kind of prestress pipe grouting as claimed in claim 1, it is characterized in that: water reducer is CONPLAST SP337.
5. thixotropic grout is used in a kind of prestress pipe grouting as claimed in claim 1, it is characterized in that: retardant is CONPLAST RP264.
6. thixotropic grout is used in a kind of prestress pipe grouting as claimed in claim 1, it is characterized in that: thixotropic agent is Cemethix F.
7. a kind of prestress pipe of preparing as described in claim 1-6 any one claim is in the milk by a method for thixotropic grout, it is characterized in that: the method comprises the following steps:
(1) in stirrer, add water and water reducer, stir 15s, it is fully mixed with water;
(2) under ceaselessly stirring, slowly add cement, after adding, then continue to stir 5min, make grout, controlling grout temperature is 18 ℃-26 ℃, controls the degree of mobilization of grout at 11s-14s;
(3) by the standing 45min of grout;
(4) then in grout, add retardant, then stir 2min, make slow setting slurry, control the degree of mobilization of slow setting slurry at 10s-14s;
(5) the slow setting slurry preparing is transported to thixotroping slurry stirring station, and detects the degree of mobilization of slow setting slurry;
(6) when the degree of mobilization of slow setting slurry is during at 12.5s-13.5s, add thixotropic agent, stir 15s, make thixotroping slurry, control the viscosity of thixotroping slurry at 900-1200cN.cm.
8. the preparation method of thixotropic grout for a kind of prestress pipe grouting as claimed in claim 7, is characterized in that: the viscosity of the thixotroping slurry making when pouring into entrance is 150-350 cN.cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310532588.0A CN103553472B (en) | 2013-11-04 | 2013-11-04 | Thixotropic cement paste for prestressed pipe grouting and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310532588.0A CN103553472B (en) | 2013-11-04 | 2013-11-04 | Thixotropic cement paste for prestressed pipe grouting and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103553472A true CN103553472A (en) | 2014-02-05 |
| CN103553472B CN103553472B (en) | 2015-03-04 |
Family
ID=50007892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310532588.0A Expired - Fee Related CN103553472B (en) | 2013-11-04 | 2013-11-04 | Thixotropic cement paste for prestressed pipe grouting and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103553472B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104370488A (en) * | 2014-06-23 | 2015-02-25 | 江苏苏博特新材料股份有限公司 | Thixotropic agent for cement-based system and preparation method thereof |
| CN106495575A (en) * | 2016-09-12 | 2017-03-15 | 广西大学 | A kind of cement mortar and preparation method thereof |
| CN107759168A (en) * | 2017-10-19 | 2018-03-06 | 中国核工业华兴建设有限公司 | A kind of novel pre-stressed cement stabilizing slurry and its manufacture method |
| WO2022116526A1 (en) * | 2020-12-02 | 2022-06-09 | 中广核工程有限公司 | Expansion grout for prestressed pipeline grouting and preparation method therefor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101434104A (en) * | 2008-11-20 | 2009-05-20 | 中国核工业华兴建设有限公司 | Pulping method for pore passage grouting paste weeping capable of reducing pre-stressing |
| CN102432251A (en) * | 2011-09-29 | 2012-05-02 | 中国核工业华兴建设有限公司 | Cement paste for prestress engineering and manufacturing method thereof |
-
2013
- 2013-11-04 CN CN201310532588.0A patent/CN103553472B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101434104A (en) * | 2008-11-20 | 2009-05-20 | 中国核工业华兴建设有限公司 | Pulping method for pore passage grouting paste weeping capable of reducing pre-stressing |
| CN102432251A (en) * | 2011-09-29 | 2012-05-02 | 中国核工业华兴建设有限公司 | Cement paste for prestress engineering and manufacturing method thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104370488A (en) * | 2014-06-23 | 2015-02-25 | 江苏苏博特新材料股份有限公司 | Thixotropic agent for cement-based system and preparation method thereof |
| CN104370488B (en) * | 2014-06-23 | 2016-08-24 | 江苏苏博特新材料股份有限公司 | A kind of cement-based systems thixotropic agent and preparation method thereof |
| CN106495575A (en) * | 2016-09-12 | 2017-03-15 | 广西大学 | A kind of cement mortar and preparation method thereof |
| CN107759168A (en) * | 2017-10-19 | 2018-03-06 | 中国核工业华兴建设有限公司 | A kind of novel pre-stressed cement stabilizing slurry and its manufacture method |
| WO2022116526A1 (en) * | 2020-12-02 | 2022-06-09 | 中广核工程有限公司 | Expansion grout for prestressed pipeline grouting and preparation method therefor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103553472B (en) | 2015-03-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104652697B (en) | Permanent modified ardealite compound heat-insulating template and manufacturing method thereof | |
| CN103553472B (en) | Thixotropic cement paste for prestressed pipe grouting and preparation method thereof | |
| CN103396053B (en) | One-component flexible polymer Waterproof mortar material and prepare waterproof mortar method with it | |
| CN104788072A (en) | Early-strength type aluminate cement based self-leveling material | |
| CN106800401B (en) | A kind of gypsum based self-leveling mortar using molybdic tailing as filler | |
| CN102936115B (en) | Production method of cement-based grouting material | |
| CN104556918A (en) | Anti-water-dispersion, high-bonding, early-strength and micro-expansion grouting material | |
| CN101792296A (en) | Concrete erosion-resistant agent based on ultrafine slag powder and use method thereof | |
| CN104805936B (en) | A kind of fibre reinforced concrete permanent formwork and preparation method thereof | |
| CN104844045A (en) | Surface treatment process of lightweight aggregate used for concrete | |
| CN108793869A (en) | A kind of high-strength superfine ultra-fine ordinary portland cement based self-leveling mortar and preparation method thereof | |
| CN110317032A (en) | A kind of high strength gypsum based self-leveling mortar and preparation method thereof | |
| CN103332956A (en) | Foamed building concrete and production method thereof | |
| CN107814542A (en) | A kind of railway grouting material and its production method | |
| CN104926242A (en) | Concrete crack repair grouting material and preparation method thereof | |
| CN105731991B (en) | A kind of modified phosphate magnesium cement and preparation method thereof | |
| CN102432250B (en) | High-compactness cement paste for vacuum grouting and manufacturing method thereof | |
| CN102432251B (en) | Cement paste for prestress engineering and manufacturing method thereof | |
| CN103979888A (en) | Rapid soil curing agent and preparation method thereof | |
| CN103553473B (en) | Prestress pipe grouting retardation setting type grout and preparation method thereof | |
| CN106007606B (en) | A kind of water-proof gypsum base thermal insulation mortar | |
| CN112608095A (en) | Expansion slurry for prestressed pipeline grouting and preparation method thereof | |
| CN103253912A (en) | Anti-crack mortar | |
| CN111268964A (en) | Reinforced concrete pipe and manufacturing process thereof | |
| CN106749955A (en) | A kind of anti-chamotte mould polycarboxylate water-reducer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150304 Termination date: 20171104 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |