CN105271890B - A kind of prestress hole path pressure grouting agent and its preparation and application - Google Patents
A kind of prestress hole path pressure grouting agent and its preparation and application Download PDFInfo
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- CN105271890B CN105271890B CN201510698896.XA CN201510698896A CN105271890B CN 105271890 B CN105271890 B CN 105271890B CN 201510698896 A CN201510698896 A CN 201510698896A CN 105271890 B CN105271890 B CN 105271890B
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Abstract
The invention provides it is a kind of with high fluidity, without bleeding the features such as prestress hole path pressure grouting agent, including following components, water reducer 2~10%, viscosity modifier 0.1~10%, defoamer 0~1%, setting time conditioning agent 35~78%；Described setting time conditioning agent includes following components：Clinker 28~52%；Gypsum 42~68%；Filler 4~30%；Coagulant 0~3%；Present invention also offers the preparation method and application method of above-mentioned prestress hole path pressure grouting agent.The present invention is due to wherein including cement setting time conditioning agent, therefore it can be changed according to outside air temperature the setting time for adjusting cement-base composite material, ensure cement-base composite material normally using the normal growth with intensity, the addition of cement setting time conditioning agent simultaneously, makes the cement-base composite material later stage produce micro-expansibility.
Description
Technical field
The invention provides a kind of prestress hole path pressure grouting agent, more particularly to it is a kind of pre- added with setting time conditioning agent
Stress hole path pressure grouting agent, also relates to the preparation method and application method of above-mentioned hole path pressure grouting agent, belongs to cement concrete
Building material field.
Background technology
Cement-base composite material is influenceed significantly by temperature Change in use, and work progress finds that temperature is less than 0 DEG C
When, cement-based material occurs that setting time is long, serious even frost heave etc. the disease of bleeding；And temperature be higher than 40 DEG C when, cement base
Condensation of materials is too fast to lead to not normal construction.The appearance of above mentioned problem, ensures construction often through a series of ancillary methods
The construction of quality, such as winter prestress hole path pressure grouting, which is taken, steam-cured waits Insulation, the hot weather construction need to add ice cube to be filled
The engineering time of foot.
Existing portland-type cement setting time conditioning agent, mostly using inorganic salts, organic polymer class material,
There are problems that temperature influence is sensitive, easily cause later strength, and cement is used as using mineral modified composite
Setting time conditioning agent can be very good to solve the above problems.
Commercially available prestress hole path pressure grouting agent species is more, but is mostly influenceed larger by temperature, runs into Extreme Temperature Conditions
It is difficult with.Therefore, there is a need in the art on the basis of developing cement setting time conditioning agent, setting time is prepared adjustable
Prestress hole path pressure grouting agent, to ensure that prestress hole path pressure grouting cement mortar can normally coagulate under condition of different temperatures
Knot, so as to ensure that the rising of intensity so that prestress wire is completely embedded with outer concrete structure, it is ensured that stress has
Effect transmission.
The content of the invention
The invention provides it is a kind of with high fluidity, without bleeding the features such as prestress hole path pressure grouting agent, wherein including
There is cement setting time conditioning agent, can be changed according to outside air temperature the setting time for adjusting cement-base composite material, it is ensured that cement
Based composites are normally using the normal growth with intensity, while the addition of cement setting time conditioning agent, is combined cement base
The material later stage produces micro-expansibility.
Realize technical scheme that above-mentioned purpose of the present invention used for：
A kind of prestress hole path pressure grouting agent, including following components, the mass percent shared by each component and each component is：
Water reducer 2~10%, viscosity modifier 0.1~10%, defoamer 0~1%, setting time conditioning agent 35~78%, mineral change
Property component 15~50%；Described viscosity modifier is that welan gum, organic modified bentonite, gas-phase silica, specific surface area are big
In 800m2One or more kinds of mixtures in/kg super finely ground slags；Described mineral modified component is silica flour, coarse whiting
One or more kinds of mixtures in powder, alum stone flour, agstone；
Described setting time conditioning agent includes following components, each component and its shared matter in setting time conditioning agent
Measuring percentage is：Clinker 28~52%；Gypsum 42~68%；Filler 4~30%；Coagulant 0~3%；The clinker is aluminium alum
The blocks that Tu Kuang is obtained after being calcined through 1300~1500 DEG C；The filler is flyash, slag powders, SILICA FUME, silicon powder
One or more kinds of mixtures.
The water reducer is melamine water reducing agent, polycarboxylate dehydragent, naphthalene sulfonic salt water reducer, microballon physics subtract
One or two kinds of mixtures in aqua.
The defoamer is one or more kinds of mixtures in organic silicon, polyethers, mineral oils.
Described gypsum is without one or more kinds of mixtures in water anhydrite, dihydrate gypsum, semi-hydrated gypsum.
Described coagulant is the one or more in aluminum sulfate, sodium aluminate, sodium metaaluminate, sodium carbonate, waterglass
Mixture.
The present invention also provides the preparation method of above-mentioned prestress hole path pressure grouting agent simultaneously, comprises the following steps：According to above-mentioned
Mass percent weigh water reducer, viscosity modifier, defoamer, mineral modified component, clinker, gypsum, filler and promote solidifying
Agent, it is then that above each component ball mill is levigate and well mixed grouting agent is made；Or first by clinker, gypsum, filler with
And coagulant is levigate well mixed with ball mill, specific surface area is made not less than 350m2/ kg setting time conditioning agent, then
Setting time conditioning agent is well mixed with remaining component with dry powder blender grouting agent is made；The specific surface area of the grouting agent
Not less than 350m2/kg。
Further, present invention also offers the application method of above-mentioned prestress hole path pressure grouting agent, comprise the following steps：It is first
Grouting agent and portland cement are first weighed, with the well mixed quality that grouting agent in grouting material, grouting material is made of dry powder blender
Percentage is 1~50%, and the mass percent of portland cement is 50~99%, then according to water and grouting material weight ratio≤
0.33 weighs grouting material, and water is first added in mixer, adds grouting material and while start mixer, and mixer rotating speed >=
500r/min, 10~20m/s of linear velocity, grouting material addition continue to stir 3~8min after finishing, and mud jacking work is carried out after the completion of slurrying
Industry；
Or do not use dry powder blender to mix grouting agent and portland cement, but when being stirred in mixer
Water is first added, grouting agent is added, portland cement is eventually adding, portland cement stirs 2~6min after adding.
Compared with prior art, the substantive distinguishing features or marked improvement that the present invention has are as follows：
(1) compared with the cement setting time conditioning agent such as traditional retarder, coagulant, the present invention is by mineral material group
Into cement-base composite material early stage and later strength not being influenceed after use, it is ensured that intensity grows steadily, it is to avoid later strength is fallen
The diseases such as contracting.The alum stone flour and dicalcium powder especially used is relative to other mineral fillers, with low cost, wide material sources
The characteristics of, it is often more important that increase cement grout toughness and intensity, particularly increase the rupture strength of cement grout, in cement mortar
In liquid formed can also skeleton, add the intensity of mud jacking slurries, and improve hardening after test block lustrous surface and planarization.
(2) present invention has outside regulation cement setting time, also has effects that microdilatancy, it is ensured that the cement-based material later stage
Do not shrink.
(3) welan gum is a kind of special microbial source polysaccharide, and its aqueous solution has very high pseudoplastic behavior, and (shearing becomes
It is dilute).It shows a kind of very high viscosity under conditions of static and low-shearing force, for adding cement in grouting agent
Slurry consistency so that mud jacking slurries suspend, stably.The characteristics of welan gum is different from other viscosity modifying materials mainly has：1st, increase
While the slurry liquid stability that adds water, the mobility of cement grout is not interfered with, it is ensured that the peak of prestress pipe is without bleeding；
2nd, stability is high.Cement grout hot weather construction temperature is up to more than 50 DEG C so that cement grout still maintains excellent stabilization
Property and viscosity.3rd, with very high pseudoplastic behavior (shear shinning).Cement grout is showed under conditions of static and low-shearing force
Go out a kind of very high stability, it is ensured that mud jacking construction is smoothed out.
(4) the microballon physics water reducer employed in the present invention is mainly made up of microscopic particles for spherical mineral micro powder,
Relative to traditional chemical water reducer have the advantage that for：1st, viscosity reduction characteristic：" the ball effect " of global shape, significantly reduces cement
Starch the plastic viscosity of shear stress, reduction concrete or mortar.2nd, mineral diminishing characteristic：The fillibility of global shape ultra-fine grain and
" ball effect ", significantly reduces the water consumption of cement mortar, and water-reducing rate has with chemical water reducer up to 15% and is perfectly superimposed work
With.3rd, pumping and thixotropic behavior：The ultra-fine characteristic of global shape has splendid lubrication improvement result to prestress hole path pressure grouting, significantly
Reduce prestress hole path pressure grouting pressure.4th, high intensity：It is with superfine nature and preferably active, hydrated reaction of cement is participated in, is carried
The compactness of high mud jacking slurries, increase cement mortar hardening later strength.
(5) based on above-mentioned 4 points of prestress hole path pressure grouting agent, cooperate with and play a role between each component, therefore, it is possible to-
Use cooperatively, it is ensured that normal construction, not only secreted with high fluidity, nothing with portland-type cement under 10 DEG C~+45 DEG C environment
Water feature, also with performances such as setting time adjustable, later stage microdilatancies so that prestress hole path pressure grouting is full, to prestress steel
Twisted wire formation is effectively protected, it is ensured that prestressed effective transmission.
Embodiment
Detailed specific description is done to the present invention with reference to specific embodiment, but protection scope of the present invention not office
It is limited to following examples.
In following examples, clinker is the blocks obtained after bauxite ore is calcined through 1300~1500 DEG C.Defoamer
For one or more kinds of mixtures in organic silicon, polyethers, mineral oils.In following examples it is prepared it is pre- should
The specific surface area of power hole path pressure grouting agent is not less than 350m2/kg。
Embodiment 1
Raw material is weighed according to part by weight, is specially：Polycarboxylate dehydragent 4%, microballon physics water reducer 2%, Brunei
Glue 0.4%, defoamer 0.6%, 200 mesh silica flours 34%, clinker 19%, dihydrate gypsum 16%, no water anhydrite 16%, fine coal
Ash 8%, it is levigate well mixed using ball mill, grouting agent is made.
Weighed according to weight 8% grouting agent, 92% 52.5 grades of Portland cements are mixed using dry powder blender
Grouting material uniformly is made.
20 ± 5 DEG C of ambient air temperature, water-cement ratio 0.26 adds water to after mixer, opens mixer, mixer rotating speed 1000r/
Min, linear velocity 15m/s, are then uniformly added into grouting material into mixer, and powder stirs 5min after adding, and slurrying completes laggard
Row mud jacking.To the cement grout of preparation according to《Highway bridge and culvert construction technique normalizing》JTG/T F50-2011 and《Highway engineering is pre-
Stress duct grouting material (agent)》JT/T 946-2014 are detected that specific targets are shown in Table 1.
Embodiment 2
Raw material is weighed according to part by weight, is specially：Naphthalene water reducer 6%, microballon physics water reducer 4%, white carbon
0.2%, defoamer 0.8%, 400 mesh alum stone flours 16%, clinker 23%, half water anhydrite 14%, dihydrate gypsum 20%, slag
Powder 6%, SILICA FUME 8%, aluminum sulfate 2% is levigate well mixed using ball mill, and grouting agent is made.
Weighed according to weight 10% grouting agent, 90% 52.5R level portland cements mix equal using dry powder blender
It is even that grouting material is made.
Ambient air temperature -5 ± 5 DEG C, water-cement ratio 0.24, add water to after mixer, open mixer, mixer rotating speed 1000r/
Min, linear velocity 15m/s, are then uniformly added into grouting material into mixer, and powder stirs 3min after adding, and slurrying completes laggard
Row mud jacking.To the cement grout of preparation according to《Highway bridge and culvert construction technique normalizing》JTG/T F50-2011 and《Highway engineering is pre-
Stress duct grouting material (agent)》JT/T 946-2014 are detected that specific targets are shown in Table 1.
Embodiment 3
Raw material is weighed according to part by weight, is specially：Polycarboxylate dehydragent 3%, organic modified bentonite 0.4%, disappears
Infusion 0.6%, 600 mesh agstones 44%, clinker 26%, no water anhydrite 23%, slag powders 3% are levigate using ball mill
It is well mixed, grouting agent is made.
Weighed according to weight 12% grouting agent, 88% 42.5 grades of Portland cements are mixed using dry powder blender
Uniformly grouting material is made in conjunction.
40 ± 5 DEG C of ambient air temperature, water-cement ratio 0.28 adds water to after mixer, opens mixer, mixer rotating speed 1000r/
Min, linear velocity 15m/s, are then uniformly added into grouting material into mixer, and powder stirs 5min after adding, and slurrying completes laggard
Row mud jacking.To the cement grout of preparation according to《Highway bridge and culvert construction technique normalizing》JTG/T F50-2011 and《Highway engineering is pre-
Stress duct grouting material (agent)》JT/T 946-2014 carry out performance detection, and specific targets are shown in Table 1.
Embodiment 4
Raw material is weighed according to part by weight, is specially：50% clinker, 20% without water anhydrite, 23% two water stones
Cream, 7% SILICA FUME, 0% coagulant weighs raw material, levigate well mixed using ball mill, prepares cement setting time
Conditioning agent.
Weighed according to weight 5% polycarboxylate dehydragent, 6% super finely ground slag, 0.6% defoamer, 400 mesh quartz
Grouting agent is made using dry powder blender is well mixed in powder 46%, 42.4% above-mentioned setting time conditioning agent.
20 ± 5 DEG C of ambient air temperature, water-cement ratio 0.26, grouting agent and 42.5 Portland cement weight ratios are 1:19, press
Add grouting agent afterwards according to first adding water, finally add the order of portland-type cement to be added in mixer, mixer rotating speed 1000r/
Min, linear velocity 15m/s, powder carry out mud jacking after the completion of 3min, slurrying are stirred after adding.To the cement grout of preparation according to《It is public
Road and bridge contain construction technique normalizing》JTG/T F50-2011 and《Highway engineering prestressed pore passage grouting material (agent)》JT/T 946-
2014 carry out performance detection, and specific targets are shown in Table 1.
Embodiment 5
Raw material is weighed according to part by weight, is specially：38% clinker, 52% dihydrate gypsum, 9% flyash, 1%
Sodium carbonate weigh raw material, it is levigate well mixed using ball mill, prepare cement setting time conditioning agent.
Naphthalene water reducer 4%, microballon physics water reducer 6%, white carbon 4%, defoamer 0.8%, 800 are weighed according to weight
Grouting agent is made using dry powder blender is well mixed in mesh agstone 30%, above-mentioned setting time conditioning agent 55.2%.
Ambient air temperature -5 ± 5 DEG C, water-cement ratio 0.23, grouting agent is 1 with 62.5R portland cements weight ratio:9, according to elder generation
Grouting agent, the order for the mud that finally adds water is added to be added in mixer after adding water, mixer rotating speed 1000r/min, linear velocity 15m/
S, powder carries out mud jacking after the completion of 3min, slurrying are stirred after adding.To the cement grout of preparation according to《Highway bridge and culvert construction technology
Specification》JTG/T F50-2011 and《Highway engineering prestressed pore passage grouting material (agent)》JT/T 946-2014 are detected, specifically
Index is shown in Table 1.
Embodiment 6
Raw material is weighed according to part by weight, is specially：29% clinker, 62% dihydrate gypsum, 9% silica flour, 0%
Coagulant weigh raw material, it is levigate well mixed using ball mill, prepare cement setting time conditioning agent.
Melamine water reducing agent 5% is weighed according to weight, white carbon 9%, defoamer 0.8%, 400 mesh dicalcium powders 49%,
Above-mentioned setting time conditioning agent 36.2%, grouting agent is made using dry powder blender is well mixed.40 ± 5 DEG C of ambient air temperature, water
Glue compares 0.28, and grouting agent and 42.5 grades of Portland cement weight ratios are 1:5.7, it is the grouting agent that add afterwards according to first being added water, last
The order of mud of adding water is added in mixer, mixer rotating speed 1000r/min, linear velocity 15m/s, and powder is stirred after adding
Mud jacking is carried out after the completion of 3min, slurrying.To the cement grout of preparation according to《Highway bridge and culvert construction technique normalizing》JTG/TF50-
2011 Hes《Highway engineering prestressed pore passage grouting material (agent)》JT/T 946-2014 are detected that specific targets are shown in Table 1.
Embodiment 7
Raw material is weighed according to part by weight, is specially：Polycarboxylate dehydragent 3%, welan gum 0.4%, defoamer
0.6%, 200 mesh silica flours 27%, clinker 16%, no water anhydrite 20%, flyash 16%, slag powders 17% use ball milling
It is well mixed that machine is levigate, and grouting agent is made.
Weighed according to weight 7% grouting agent, 93% 42.5 grades of Portland cements are mixed using dry powder blender
Grouting material uniformly is made.
40 ± 5 DEG C of ambient air temperature, water-cement ratio 0.32 adds water to after mixer, opens mixer, mixer rotating speed 1000r/
Min, linear velocity 15m/s, are then uniformly added into grouting material into mixer, and powder stirs 5min after adding, and slurrying completes laggard
Row mud jacking.To the cement grout of preparation according to《Railway post stressed concrete beam pipe mudjacking technical conditions》TB/T
3192-2008 carries out performance detection, and specific targets are shown in Table 1.
Embodiment 8
Raw material is weighed according to part by weight, is specially：38% clinker, 52% dihydrate gypsum, 9% flyash, 1%
Sodium carbonate weigh raw material, it is levigate well mixed using ball mill, prepare cement setting time conditioning agent.
Naphthalene water reducer 8%, microballon physics water reducer 2%, white carbon 2%, welan gum 2%, froth breaking are weighed according to weight
Pressure is made using dry powder blender is well mixed in agent 0.4%, 600 mesh dicalcium powders 33%, above-mentioned setting time conditioning agent 52.6%
Starch agent.
Ambient air temperature -5 ± 5 DEG C, water-cement ratio 0.30, grouting agent is 1 with 52.5R portland cements weight ratio:9, according to elder generation
Grouting agent, the order for the mud that finally adds water is added to be added in mixer after adding water, mixer rotating speed 1000r/min, linear velocity 15m/
S, powder carries out mud jacking after the completion of 6min, slurrying are stirred after adding.To the cement grout of preparation according to《Railway is post-stressed
Beams of concrete pipeline pneumatic mortar technical conditions》TB/T 3192-2008 carry out performance detection, and specific targets are shown in Table 1.
As it can be seen from table 1 each embodiment is under different temperatures environmental condition, technical indicator can meet correlation technique rule
The requirement of model, strong ensure is provided for construction.
The invention is not limited in above-described embodiment, the feasibility of the present invention is only illustrated with above-described embodiment, rather than to it
Limitation.The modification carried out to above-described embodiment, or equivalent is carried out to which part or all technical characteristic, it can not make
Corresponding technical scheme departs from the scope of various embodiments of the present invention technical scheme.
Claims (7)
1. a kind of prestress hole path pressure grouting agent, it is characterised in that including following components, the quality shared by each component and each component
Percentage is：Water reducer 2 ~ 10%, viscosity modifier 0.1 ~ 10%, defoamer 0 ~ 1%, setting time conditioning agent 35 ~ 78%, mineral change
Property component 15 ~ 50%；Described viscosity modifier is welan gum, organic modified bentonite, gas-phase silica, specific surface area are more than
800m2One or more kinds of mixtures in/kg super finely ground slags；Described mineral modified component be silica flour, dicalcium powder,
One or more kinds of mixtures in alum stone flour, agstone；
Described setting time conditioning agent includes following components, each component and its shared quality hundred in setting time conditioning agent
Point ratio is：Clinker 28 ~ 52%；Gypsum 42 ~ 68%；Filler 4 ~ 30%；Coagulant 0 ~ 3%；The clinker be bauxite ore through 1300 ~
The blocks obtained after 1500 DEG C of calcinings；The filler be flyash, slag powders, SILICA FUME, silicon powder it is one or two kinds of with
On mixture.
2. prestress hole path pressure grouting agent according to claim 1, it is characterised in that：The water reducer is melamine diminishing
One or two kinds of mixtures in agent, polycarboxylate dehydragent, naphthalene sulfonic salt water reducer, microballon physics water reducer.
3. prestress hole path pressure grouting agent according to claim 1, it is characterised in that：The defoamer is organic silicon, gathered
One or more kinds of mixtures in ethers, mineral oils.
4. prestress hole path pressure grouting agent according to claim 1, it is characterised in that：Described gypsum be without water anhydrite,
One or more kinds of mixtures in dihydrate gypsum, semi-hydrated gypsum.
5. prestress hole path pressure grouting agent according to claim 1, it is characterised in that：Described coagulant is aluminum sulfate, aluminium
One or more kinds of mixtures in sour sodium, sodium metaaluminate, sodium carbonate, waterglass.
6. the preparation method of the prestress hole path pressure grouting agent described in claim 1, it is characterised in that comprise the following steps：According to power
The mass percent that profit requires described in 1 weighs water reducer, viscosity modifier, defoamer, mineral modified component, clinker, gypsum, filled out
Material and coagulant, it is then that each component ball mill is levigate and well mixed grouting agent is made；The ratio surface of the grouting agent
Product is not less than 350m2/kg；
Or it is first that clinker, gypsum, filler and coagulant is levigate well mixed with ball mill, specific surface area is made and is not less than
350m2/ kg setting time conditioning agent, is then well mixed system with dry powder blender by setting time conditioning agent with remaining component
Into grouting agent；The specific surface area of the grouting agent is not less than 350m2/kg。
7. the application method of the prestress hole path pressure grouting agent described in claim 1, it is characterised in that comprise the following steps：Claim first
Grouting agent and portland cement are taken, with the well mixed quality percentage that grouting agent in grouting material, grouting material is made of dry powder blender
Than for 1 ~ 50%, the mass percent of portland cement is 50 ~ 99%, is then weighed according to water with grouting material weight ratio≤0.33
Grouting material, first adds water in mixer, adds grouting material and starts mixer simultaneously, mixer rotating speed >=500r/min,
10 ~ 20m/s of linear velocity, grouting material addition continues to stir 3 ~ 8min after finishing, and mud jacking operation is carried out after the completion of slurrying；
Or grouting agent and portland cement are weighed, do not use dry powder blender to mix grouting agent and portland cement,
But water is first added when being stirred in mixer, grouting agent is added, portland cement is eventually adding, after portland cement is added
Stir 2 ~ 6min.
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| CN105776944A (en) * | 2016-03-08 | 2016-07-20 | 上海英杉新材料科技有限公司 | Cement base rheological stabilizing agent and preparation method and application thereof |
| CN105967591B (en) * | 2016-05-05 | 2018-12-07 | 武汉华中科大土木工程检测中心 | A kind of high fluidity is suitble to the grouting material and preparation method thereof in super-length prestressed duct |
| CN106365501A (en) * | 2016-09-09 | 2017-02-01 | 山西科腾环保科技股份有限公司 | Porelike grouting agent and preparation method and use method thereof |
| CN106431047B (en) * | 2016-10-13 | 2019-03-26 | 中建商品混凝土眉山新材料有限公司 | Polycarboxylate water-reducer thixotropic agent, thixotropic polycarboxylate water-reducer and its application |
| CN106892595B (en) * | 2017-02-21 | 2019-03-26 | 湖北工业大学 | The preparation method of early strength prestressed hole path pressure grouting material |
| CN111484269B (en) * | 2019-01-28 | 2022-11-25 | 西南科技大学 | Viscosity regulator for cement-based grouting material and preparation method thereof |
| CN110981277B (en) * | 2019-12-17 | 2022-04-15 | 武汉品泰特种建材科技有限公司 | High-strength prestressed duct grouting agent |
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| JP3372012B2 (en) * | 1995-06-27 | 2003-01-27 | 住友大阪セメント株式会社 | Grout wood |
| CN102260056B (en) * | 2011-05-24 | 2013-01-16 | 河北铁园科技发展有限公司 | Post-tensioned prestressed porelike grouting agent |
| CN102531502B (en) * | 2012-03-02 | 2013-10-30 | 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 |
| CN102942325B (en) * | 2012-11-01 | 2014-01-29 | 湖南联智桥隧技术有限公司 | Prestressed pipe grouting agent |
| CN103030321B (en) * | 2012-12-26 | 2015-09-16 | 交通运输部公路科学研究所 | Swelling agent, post-stressed concrete pore passage grouting agent and grouting material |
| CN103145360B (en) * | 2013-03-01 | 2015-06-24 | 江苏苏博特新材料股份有限公司 | Viscosity modifier for high or ultrahigh-strength concrete |
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