CN108314393A - A kind of low temperature environment bar connecting grouting material and its preparation method and application - Google Patents
A kind of low temperature environment bar connecting grouting material and its preparation method and application Download PDFInfo
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- CN108314393A CN108314393A CN201810230700.8A CN201810230700A CN108314393A CN 108314393 A CN108314393 A CN 108314393A CN 201810230700 A CN201810230700 A CN 201810230700A CN 108314393 A CN108314393 A CN 108314393A
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- grouting material
- low temperature
- temperature environment
- bar connecting
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Classifications
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- 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
- C04B28/06—Aluminous cements
-
- 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
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/70—Grouts, e.g. injection mixtures for cables for prestressed concrete
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
Abstract
The invention discloses a kind of low temperature environment bar connecting grouting material and its application, wherein low temperature environment bar connecting is made of with grouting material each raw material of following parts by weight：35 55 parts of cement, 5 20 parts of mineral admixture, 0 30 parts of accelerating component, 30 50 parts of aggregate, 0.1 0.5 parts of water-reducing agent, 0 0.03 parts of plastic expansion agent, 0 0.1 parts of antifoaming agent, 0 0.05 parts of stabilizer, 0 0.05 parts of air entraining agent, 01 parts of retarder, 0 0.05 parts of coagulant.The present invention grouting material under 5 DEG C of environment plus 0 DEG C of water mix after manufactured grouting material mixture after 30 minutes fluidity be more than 260mm, ensure grouting time enough under low temperature, have the characteristics that ratio of water to material is low, mobility is high, and still there is expansion character and good low temperature hydrated characteristic under subzero temperature environment, reinforcing bar grouting connection construction suitable for 10 DEG C~10 DEG C environment, solve the problems, such as that low temperature environment is especially less than the grouting construction of 0 DEG C of environment, the grouting material of the last present invention has the morning of corrosiveness strong ingredient without villaumite etc. to reinforcing bar.
Description
Technical field
The present invention relates to building material technical fields, and in particular to a kind of low temperature environment bar connecting grouting material and its system
Preparation Method and application.
Background technology
It will become what the whole nation was widely applied extensively currently, the industrialized building of prefabricated concrete structure has been formed
Gesture, but there are many problems to need to solve for existing reinforcing bar grouting interconnection technique.
Bar connecting is a kind of dedicated high strength cement base grouting material, including sleeve grouting material and reinforcing bar slurry with grouting material
Anchor overlaps connection grouting material, which uses after adding water to stir evenly, and all has good mobility, early strong, high-strength, micro-
The performances such as expansion, still, existing bar connecting is mainly normal temperature environment product with grouting material, when the environment of grouting construction and mixed
When Xtah Crude Clay structure body is in low temperature or subzero temperature, mixture can be very after pouring into branch sleeve or metal bellows or reserving hole channel
Subzero temperature is reduced in the short time (before final set), not only grouting material early strength is very low, in some instances it may even be possible to because freeze injury causes it final
Intensity is unable to reach design objective.Due to lacking the sleeve grouting material product constructed under cryogenic, construction technology, existing state
Family's professional standard《Bar connecting sleeve grouting material》JG/T408-2013 only provides property of grouting material under the conditions of 20 DEG C of room temperature
It can index；《Reinforced bar sleeve grouting connection application technology regulation》JGJ355-2015 is then provided：Environment temperature should not be applied less than 5 DEG C
Work must not construct less than 0 DEG C；《Prefabricated concrete structure technical regulation》Reinforced bar sleeve grouting is connect in JGJ 1-2014
The cementing operations that head, reinforcing bar slurry anchor overlap jointing also specify：When grouting construction, environment temperature is not lower than 5 DEG C；When even
When socket part position curing temperature is less than 10 DEG C, heating and thermal insulation measure should be taken.The heating and thermal insulation arrange increased measure cost for
It is many that construction project can cause cost to increase, and is not suitable for widely applying.
Therefore, the bar connecting grouting material and its cryogenic property index that low subzero temperature environment uses have to be developed and establish.
Invention content
To solve above-mentioned the deficiencies in the prior art, the present invention provides a kind of low temperature resistant environment bar connecting grouting material and
It is applied.
Technical scheme is as follows：
A kind of low temperature environment bar connecting grouting material is provided, is made of each raw material of following parts by weight：Cement 35-55
Part, 5-20 parts of mineral admixture, 0-30 parts of accelerating component, 30-50 parts of aggregate, 0.1-0.5 parts of water-reducing agent, plastic expansion agent 0-
0.03 part, 0-0.1 parts of antifoaming agent, 0-0.05 parts of stabilizer, 0-0.05 parts of air entraining agent, 0-1 parts of retarder, coagulant 0-0.05
Part.
Preferably, the grouting material is made of each raw material of following parts by weight：35-55 parts of cement, mineral admixture 10-20
Part, 15-25 parts of accelerating component, 30-50 parts of aggregate, 0.1-0.5 parts of water-reducing agent, 0.01-0.03 parts of plastic expansion agent, antifoaming agent
0.05-0.1 parts, 0.01-0.05 parts of stabilizer, 0.01-0.05 parts of air entraining agent, 0.1-1 parts of retarder, coagulant 0.01-0.05
Part.
Preferably, the cement is or mixtures thereof ordinary cement, portland cement or high belite sulphate aluminium cement.
Preferably, the ordinary cement is at least one in PO42.5, PO42.5R, PO52.5, PO52.5R
Kind, the portland cement is PI42.5/52.5/62.5, PI42.5R/52.5R/62.5R, PII42.5/52.5/
62.5, at least one of PII42.5R/52.5R/62.5R, the high belite sulphate aluminium cement are HBSAC42.5/
At least one of 52.5/62.5.
Preferably, the mineral admixture be silicon ash, coarse whiting superfine powder, miberal powder, flyash, in microballon flyash at least
It is a kind of；It is furthermore preferred that the grain size of the coarse whiting superfine powder is 2000 mesh.
Preferably, the accelerating component is general early strength agent or total by the stearic acid of quick lime and 0.2~0.6wt%
It is mixed more than 1000 DEG C of temperature with adipose membrane early strength agent made of grinding or by aluminum sulfate, calcium sulphoaluminate, calcium aluminate
Self-control complex accelerator；It is furthermore preferred that the accelerating component be by aluminum sulfate, calcium sulphoaluminate, calcium aluminate in 1000~
The self-control complex accelerator mixed at a temperature of 1300 DEG C.
Preferably, the aggregate is the natural sand or artificial sand that grain size is less than 2mm.
Preferably, the water-reducing agent is at least one of polycarboxylic acids dehydragent, melamine class water-reducing agent；More preferably
, the polycarboxylic acids dehydragent is 540P, the Shanghai English China fir green wood that 2651F, the Switzerland's west card of German BASF production produce
Expect at least one of the PC200 of Science and Technology Ltd.'s production, the 600P of Shanghai Sanrui Polymer Material Co., Ltd.'s production.
Preferably, the plastic expansion agent is particles of polylactic acid and/or AC foaming agents.
Preferably, the antifoaming agent is organosilicon powder antifoaming agent；It is furthermore preferred that the organosilicon powder antifoaming agent is day
The P803 of B-328F, Germany the AGITAN production of this production, at least one of the antifoaming agent DF6352 of U.S.'s production.
Preferably, the stabilizer is polyacrylamide amine stabiliser, hydroxypropyl methyl cellulose ether stabilizer, polyethylene glycol
At least one of stabilizer.
Preferably, the air entraining agent is FLOTAGE-AE-1.
Preferably, the retarder is boric acid class retarder, tartaric acids retarder, gluconic acid salt retarder, lemon
At least one of lemon acids retarder；It is furthermore preferred that the retarder is boric acid, tartaric acid, citric acid, Boratex, winestone
At least one of sour sodium, sodium gluconate.
Preferably, the coagulant is at least one of calcium formate, lithium carbonate, calcium nitrite, sodium nitrite.
The present invention also provides a kind of methods preparing aforementioned low temperature environment bar connecting grouting material, are to put all raw materials
Enter in Agravicmixer, mixing can be obtained the low temperature environment bar connecting grouting material after ten minutes.
Application the present invention also provides aforementioned low temperature environment bar connecting with grouting material in the field of construction, by institute when application
It states low temperature environment bar connecting grouting material and water to be added in blender according to the ratio of water material weight ratio 0.12-0.16, stirring
Uniformly obtain grouting material mixture；Preferably, the water material weight ratio is 0.14.
Present invention tool has the advantage that：
1) in application, amount of water is few, have the characteristics that low ratio of water to material, and grouting material has splendid mobility, it is not stratified,
Not bleeding.
2) there is expansion character under the conditions of low subzero temperature.
3) there are good subzero temperature hydration characteristics, in the case where not taking or taking heating, Insulation less, be applicable in
In -10 DEG C~10 DEG C and the sleeve grouting construction of environment above, solves the difficulty of 5 DEG C or less especially 0 DEG C or less grouting constructions
Topic.
4) grouting material of the invention adds after water mix that fluidity is more than 260mm after 30 minutes, it is ensured that enough grouting
Time.
5) be free of villaumite etc. has the morning of corrosiveness strong ingredient to reinforcing bar.
Specific implementation mode
In conjunction with specific implementation mode to inventing further details of explanation.It should be appreciated that the present embodiment is merely to illustrate
The present invention, rather than limit protection scope of the present invention.
Embodiment 1
The low temperature environment bar connecting grouting material of the present invention, raw material composition are as follows：
High belite sulphate aluminium cement HBSAC52.5 --- 45kg
Silicon ash --- 5kg
Grain size is quartz sand --- the 50kg of 0.1mm~1mm
Polycarboxylic acids dehydragent PC200 (Shanghai English China fir) --- 0.15kg
Melamine class water-reducing agent SM --- 0.1kg
Antifoaming agent P803 (German AGITAN) --- 0.1kg
Polyethylene glycol stabilized dose (viscosity 6400mPas) --- 0.005kg
FLOTAGE-AE-1——0.01kg
Tartaric acid --- 0.2kg
Lithium carbonate --- 0.02kg
The above raw material is mixed using agravic high efficient mixer and obtains a kind of low temperature environment bar connecting after ten minutes
With grouting material, by its quantitative separating in the double-deck moisture-proof packing bag.When site operation, by the grouting material and water according to water material
The ratio of weight ratio 0.14 is added in blender (wherein mixing water need not heat, 10 DEG C), is uniformly mixing to obtain one kind
Low temperature environment bar connecting grouting material mixture.
Above-mentioned grouting material is suitable for -10 DEG C to 10 DEG C of construction environment, and grouting material mixture is tested using truncated cone circle mould
Divergence.Initial flow degree is not less than 320mm, and 30 minutes fluidities are not less than 300mm, it does not isolate, not bleeding, setting time
No less than 50min.Under -5 DEG C of environment, 1 day compression strength R-1dFor 35MPa, 7 days compression strength R-7dFor 66MPa, it is transferred to 20 DEG C of rings
Intensity is 83.6MPa after border conserves 28 days, and standard curing 28d intensity is 92.9MPa, is 90% (subzero temperature of the strength of standard curing
Turn room temperature 28d compression strength values divided by mark supports the compression strength value of 28d).According to《Cement-based grouting material application technology specification》
(GB/T 50448-2015) table 4.1.2 is used for the cement-based grouting material performance indicator R of winter construction-7+28d/R28d>=80%
It is considered as qualification.
Low subzero temperature expansion character parameter：3h vertical expansion ratio >=0.02% under -10 DEG C of environment；For 24 hours with 3h vertical expansion ratios
Difference is between 0.02-0.5%.
Embodiment 2
The low temperature environment bar connecting grouting material of the present invention, raw material composition are as follows：
Portland cement P ﹒ II52.5 --- 37.5kg
Accelerating component --- 12.5kg
Silicon ash --- 10kg
Grain size is quartz sand --- the 50kg of 0.5mm-2mm
Polycarboxylic acids dehydragent 540P (Switzerland's west card) --- 0.13kg
Melamine class water-reducing agent SM --- 0.1kg
Particles of polylactic acid --- 0.02kg
Antifoaming agent DF6352 (U.S. steps figure) --- 0.1kg
Polyacrylamide amine stabiliser (viscosity 10800mPas) --- 0.007kg
FLOTAGE-AE-1——0.01kg
Citric acid 0.15kg
Lithium carbonate 0.01kg
The above raw material is mixed using agravic high efficient mixer and obtains a kind of low temperature environment bar connecting after ten minutes
With grouting material, by its quantitative separating in the double-deck moisture-proof packing bag.When site operation, by the material and water according to water material weight
Ratio than 0.125 is added in blender (wherein mixing water need not heat, 10 DEG C), is uniformly mixing to obtain a kind of low temperature
Environment bar connecting grouting material mixture.
Above-mentioned grouting material is suitable for -10 DEG C to -0 DEG C of construction environment, and grouting material mixture is tested using truncated cone circle mould
Divergence.Initial flow degree is not less than 320mm, and 30 minutes fluidities are not less than 300mm, does not isolate, not bleeding, setting time is not
Less than 50min.1 day compression strength R of -5 DEG C of environment-1dFor 40MPa, 7 days compression strength R-7dFor 69MPa, it is transferred to 20 DEG C of environment and supports
Intensity is 92.5MPa after shield 28 days, and it is 98.6MPa to mark and support 28d compression strength, is the 93.8% of the strength of standard curing.According to《Water
Mud base grouting material application technology specification》(GB/T50448-2015) table 4.1.2 is used for the cement-based grout material of winter construction
Expect performance indicator R-7+28d/R28d>=80% is considered as qualification.
Low subzero temperature expansion character parameter：3h vertical expansion ratio >=0.02% under 0 DEG C of environment；It is poor with 3h vertical expansion ratios for 24 hours
Value is between 0.02-0.5%.
Embodiment 3
The low temperature environment bar connecting grouting material of the present invention, raw material composition are as follows：
High belite sulphate aluminium cement HBSAC52.5 --- 40kg
Microballon flyash --- 5kg
Super finely ground slag (800 mesh) --- 6.7kg
Grain size is quartz sand --- the 48.3kg of 0.3mm-1mm
Polycarboxylic acids dehydragent 600P (Shanghai three is auspicious) --- 0.15kg
Particles of polylactic acid --- 0.02kg
Antifoaming agent B-328F (Ai Dike Co., Ltd.) --- 0.1kg
Hydroxypropyl methyl cellulose ether (viscosity 4000mPas) --- 0.008kg
FLOTAGE-AE-1——0.01kg
Sodium gluconate --- 0.3kg
The above raw material is mixed using agravic high efficient mixer and obtains a kind of low temperature environment bar connecting after ten minutes
With grouting material, by its quantitative separating in the double-deck moisture-proof packing bag.When site operation, by the material and water according to water material quality
Ratio than 0.15 is added in blender (wherein mixing water need not heat, 10 DEG C), is uniformly mixing to obtain a kind of low temperature
Environment bar connecting grouting material mixture.
Above-mentioned grouting material is suitable for 0 DEG C to 5 DEG C of construction environment, and the extension of grouting material mixture is tested using truncated cone circle mould
Degree.Initial flow degree is not less than 300mm, and fluidity is not less than 280mm within 30 minutes, does not isolate, bleeding, setting time are not less than
45min.0 DEG C of environment, 1 day compression strength R-1dFor 45MPa, 7 days compression strength R-7dFor 73MPa, it is transferred to 20 DEG C of environment and conserves 28 days
Intensity is 93.1MPa afterwards, and it is 95.9MPa to mark and support 28d compression strength, is the 97% of the strength of standard curing.According to《Cement-based grout
Material application technology specification》(GB/T50448-2015) table 4.1.2, the cement-based grouting material performance for winter construction refer to
Mark R-7+28d/R28d>=80% is considered as qualification.
Low subzero temperature expansion character parameter：3h vertical expansion ratio >=0.02% under 5 DEG C of environment；It is poor with 3h vertical expansion ratios for 24 hours
Value is between 0.02-0.5%.
Embodiment 4
The low temperature environment bar connecting grouting material of the present invention, raw material composition are as follows：
Portland cement PII52.5 --- 40kg
Accelerating component --- 10kg
Grain size is quartz sand --- the 45kg of 0.1mm~1mm
Silicon ash --- 2kg
Microballon flyash --- 3kg
Water-reducing agent 2651F (German BASF) --- 0.20kg
AC foaming agents --- 0.01kg
Antifoaming agent DF6352 (U.S. steps figure) --- 0.1kg
Polyethylene glycol (viscosity 6400mPas) --- 0.005kg
FLOTAGE-AE-1——0.01kg
Tartaric acid --- 0.1kg
The above raw material is mixed using agravic high efficient mixer and obtains a kind of low temperature environment bar connecting after ten minutes
With grouting material, by its quantitative separating in the double-deck moisture-proof packing bag.When site operation, by the material and water according to water material weight
Ratio than 0.12 is added in blender (wherein mixing water need not heat, 10 DEG C), is uniformly mixing to obtain a kind of low temperature
Environment bar connecting grouting material mixture.
Above-mentioned grouting material is suitable for -5 DEG C to 5 DEG C of construction environment, is mixed using funnel viscometer test 1725mL grouting materials
Close the delivery time of object.Initial flow degree is not less than 330mm, and 30 minutes fluidities are not less than 300mm, does not isolate, not bleeding, coagulates
The time is tied not less than 60min.0 DEG C of environment, 1 day compression strength R-1dFor 35MPa, 7 days compression strength R-7dFor 72MPa, it is transferred to room temperature
Intensity is 106.3MPa after environment conserves 28 days, and it is 107.4MPa to mark and support 28d compression strength, is the 99% of the strength of standard curing.
According to《Cement-based grouting material application technology specification》(GB/T 50448-2015) table 4.1.2 is used for the cement of winter construction
Base grouting material performance indicator
R-7+28d/R28d>=80% is considered as qualification.
Low subzero temperature expansion character parameter：3h vertical expansion ratio >=0.02% under 5 DEG C of environment；It is poor with 3h vertical expansion ratios for 24 hours
Value is between 0.02-0.5%.
Embodiment 5
The low temperature environment bar connecting grouting material of the present invention, raw material composition are as follows：
Ordinary cement PO52.5 --- 35kg
Accelerating component --- 15kg
Grain size is quartz sand --- the 35kg of 0.1mm~1mm
Coarse whiting superfine powder (8 μm or so of grain size) --- 8kg
Microballon flyash --- 7kg
Water-reducing agent 540P (Switzerland's west card) --- 0.20kg
AC foaming agents --- 0.01kg
Antifoaming agent DF6352 (U.S. steps figure) --- 0.1kg
Polyethylene glycol (viscosity 6400mPas) --- 0.005kg
Tartaric acid --- 0.5kg
Potassium nitrite --- 0.04kg
The above raw material is mixed using agravic high efficient mixer and obtains a kind of low form bar connecting use after ten minutes
Grouting material, by its quantitative separating in the double-deck moisture-proof packing bag.When site operation, by the material and water according to water material weight ratio
0.13 ratio is added in blender (wherein mixing water need not heat, 10 DEG C), is uniformly mixing to obtain a kind of low form
Bar connecting grouting material mixture.
Above-mentioned grouting material is suitable for -5 DEG C to 5 DEG C of construction environment, is mixed using funnel viscometer test 1725mL grouting materials
Close the delivery time of object.Initial flow degree is not less than 330mms, and 30 minutes fluidities are not less than 300mm, does not isolate, not bleeding,
Setting time is not less than 60min.0 DEG C of environment, 1 day compression strength R-1dFor 34MPa, 7 days compression strength R-7dFor 65MPa, it is transferred to often
Intensity is 96.3MPa after warm environment conserves 28 days, and it is 101.4MPa to mark and support 28d compression strength, is the 95% of the strength of standard curing.
According to《Cement-based grouting material application technology specification》(GB/T 50448-2015) table 4.1.2 is used for the cement of winter construction
Base grouting material performance indicator
R-7+28d/R28d>=80% is considered as qualification.
Low subzero temperature expansion character parameter：3h vertical expansion ratio >=0.02% under 0 DEG C of environment；It is poor with 3h vertical expansion ratios for 24 hours
Value is between 0.02-0.5%.
Embodiment 6
The low temperature environment bar connecting grouting material of the present invention, raw material composition are as follows：
Portland cement P ﹒ II52.5 --- 35kg
High belite sulphate aluminium cement HBSAC52.5 --- 10kg
Grain size is Machine-made Sand --- the 45kg of 0.1mm~1mm
Accelerating component --- 5kg
Coarse whiting superfine powder (2000 mesh) --- 9kg
Microballon flyash --- 4kg
Water-reducing agent PC200 (Shanghai English China fir) --- 0.20kg
AC foaming agents --- 0.03kg
Antifoaming agent DF6352 (U.S. steps figure) --- 0.1kg
Polyethylene glycol (viscosity 6400mPas) --- 0.005kg
Sodium gluconate 0.8kg
Calcium formate 0.03kg
The accelerating component is 4kg aluminum sulfate, 4kg calcium sulphoaluminates, 4kg calcium aluminates mix at a temperature of 1300 DEG C
Make complex accelerator by oneself.
The above raw material is mixed using " agravic high efficient mixer " and obtains a kind of low temperature environment reinforcing bar company after ten minutes
It connects and uses grouting material, by its quantitative separating in the double-deck moisture-proof packing bag.When site operation, by the material and water according to water material weight
It measures the ratio than 0.12 to be added in blender (wherein mixing water need not heat, 10 DEG C), be uniformly mixing to obtain a kind of low
Warm environment bar connecting grouting material mixture.
Above-mentioned grouting material is suitable for -10 DEG C to 10 DEG C of construction environment, and 1725mL grouting materials are tested using funnel viscometer
The delivery time of mixture.Initial flow degree 320mm, 30 minutes fluidity 290mm are not isolated, not bleeding, setting time
100min.0 DEG C of environment, 1 day compression strength R-1dFor 40MPa, 7 days compression strength R-7dFor 70MPa, it is transferred to normal temperature environment maintenance 28
Intensity is 95.3MPa after it, and standard curing 28d intensity is 98.2MPa, is the 97% of the strength of standard curing.According to《Cement base fills
Pulp material application technology specification》(GB/T 50448-2015) table 4.1.2 is used for the cement-based grouting material performance of winter construction
Index R-7+28d/R28d>=80% is considered as qualification.
Low subzero temperature expansion character parameter：3h vertical expansion ratio >=0.02% under 0 DEG C of environment；It is poor with 3h vertical expansion ratios for 24 hours
Value is between 0.02-0.5%.
The above description of this invention is merely illustrative, and and not restrictive, those skilled in the art should be appreciated that
Many modifications, variation or equivalent modification can be carried out within the spirit and scope that claim limits to it, but they will all fall
Enter in protection scope of the present invention.
Claims (10)
1. a kind of low temperature environment bar connecting grouting material, which is characterized in that the grouting material by following parts by weight each raw material
Composition：35-55 parts of cement, 5-20 parts of mineral admixture, 0-30 parts of accelerating component, 30-50 parts of aggregate, 0.1-0.5 parts of water-reducing agent,
0-0.03 parts of plastic expansion agent, 0-0.1 parts of antifoaming agent, 0-0.05 parts of stabilizer, 0-0.05 parts of air entraining agent, 0-1 parts of retarder promote
Solidifying 0-0.05 parts of agent；
Preferably, the grouting material is made of each raw material of following parts by weight：35-55 parts of cement, 10-20 parts of mineral admixture,
15-25 parts of accelerating component, 30-50 parts of aggregate, 0.1-0.5 parts of water-reducing agent, 0.01-0.03 parts of plastic expansion agent, antifoaming agent 0.05-
0.1 part, 0.01-0.05 parts of stabilizer, 0.01-0.05 parts of air entraining agent, 0.1-1 parts of retarder, 0.01-0.05 parts of coagulant.
2. low temperature environment bar connecting grouting material as described in claim 1, which is characterized in that the cement is light water
Or mixtures thereof mud, portland cement or high belite sulphate aluminium cement；
Preferably, the ordinary cement is at least one of PO42.5, PO42.5R, PO52.5, PO52.5R, institute
State portland cement be PI42.5/52.5/62.5, PI42.5R/52.5R/62.5R, PII42.5/52.5/62.5,
At least one of PII42.5R/52.5R/62.5R, the high belite sulphate aluminium cement are HBSAC42.5/52.5/
At least one of 62.5.
3. low temperature environment bar connecting grouting material as described in claim 1, which is characterized in that the mineral admixture is silicon
At least one of ash, coarse whiting superfine powder, miberal powder, flyash, microballon flyash；Preferably, the grain size of the coarse whiting superfine powder
For 2000 mesh.
4. low temperature environment bar connecting grouting material as described in claim 1, which is characterized in that the accelerating component is general
Early strength agent or the adipose membrane early strength agent made of the stearic acid intergrinding of quick lime and 0.2~0.6wt% or pass through sulphur
The self-control complex accelerator that sour aluminium, calcium sulphoaluminate, calcium aluminate mix more than 1000 DEG C of temperature；Preferably, the morning is strong
Group is divided into the self-control complex accelerator mixed at a temperature of 1000~1300 DEG C by aluminum sulfate, calcium sulphoaluminate, calcium aluminate.
5. low temperature environment bar connecting grouting material as described in claim 1, which is characterized in that the aggregate is less than for grain size
The natural sand or artificial sand of 2mm.
6. low temperature environment bar connecting grouting material as described in claim 1, which is characterized in that the water-reducing agent is polycarboxylic acids
At least one of class water-reducing agent, melamine class water-reducing agent；
Preferably, the polycarboxylic acids dehydragent be the 2651F of German BASF production, the 540P of Switzerland's west card production, Shanghai
The PC200 of Ying Shan new materials Science and Technology Ltd. production, the 600P of Shanghai Sanrui Polymer Material Co., Ltd.'s production are at least
It is a kind of.
7. low temperature environment bar connecting grouting material as described in claim 1, which is characterized in that the plastic expansion agent is poly-
Lactic acid particles and/or AC foaming agents.
8. low temperature environment bar connecting grouting material as described in claim 1, which is characterized in that the antifoaming agent is organosilicon
Powder antifoaming agent；It is furthermore preferred that the organosilicon powder antifoaming agent is B-328F, Germany the AGITAN production of Japan's production
At least one of the antifoaming agent DF6352 that P803, the U.S. produce；
Preferably, the stabilizer be polyacrylamide amine stabiliser, it is hydroxypropyl methyl cellulose ether stabilizer, polyethylene glycol stabilized
At least one of agent；
Preferably, the air entraining agent is FLOTAGE-AE-1；
Preferably, the retarder is boric acid class retarder, tartaric acids retarder, gluconic acid salt retarder, citric acid
At least one of class retarder；It is furthermore preferred that the retarder be boric acid, tartaric acid, citric acid, Boratex, sodium tartrate,
At least one of sodium gluconate；
Preferably, the coagulant is at least one of calcium formate, lithium carbonate, calcium nitrite, sodium nitrite.
9. a kind of method preparing claim 1-8 any one of them low temperature environment bar connecting grouting materials, feature exist
In all raw materials being put into Agravicmixer, mixing can be obtained the low temperature environment bar connecting and uses after ten minutes
Grouting material.
10. application of the low temperature environment bar connecting with grouting material in the field of construction described in claim 1, which is characterized in that answer
Blender is added according to the ratio of water material weight ratio 0.12-0.16 in the low temperature environment bar connecting grouting material and water by the used time
In, it is uniformly mixing to obtain grouting material mixture；Preferably, the water material weight ratio is 0.14.
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