CN109180114A - A kind of reinforcing bar sleeve for connection grouting material and preparation method thereof - Google Patents
A kind of reinforcing bar sleeve for connection grouting material and preparation method thereof Download PDFInfo
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- CN109180114A CN109180114A CN201811000771.5A CN201811000771A CN109180114A CN 109180114 A CN109180114 A CN 109180114A CN 201811000771 A CN201811000771 A CN 201811000771A CN 109180114 A CN109180114 A CN 109180114A
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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
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention belongs to the field of building materials, a kind of reinforcing bar sleeve for connection grouting material and preparation method thereof is specifically disclosed, the grouting material is made of two kinds of components of A, B, wherein, component A is dry powder-shaped, compounds to obtain by following material: 350-400 parts of cement, 80-100 parts of admixture, 450-500 parts of sand, 0.04-0.06 parts of water-retaining agent, 1-1.5 parts of defoaming agent, 6-8 parts of non-time-release type water-reducing agent, 35-40 parts of composite expanding agent, 5-10 parts of complex accelerator；B component is solution, compounds to obtain by following material: 0.5-1 parts of sustained-release water reducing agent, 40-50 parts of compound retarder, 40-60 parts of graphene aqueous dispersions, 75-95 parts of deionized water, based on parts by weight.Preparation method is after A, B component are carried out ingredient in certain mass ratio, with certain stirring means after mixing evenly up to grouting material.A kind of reinforcing bar sleeve for connection grouting material provided by the invention has many advantages, such as that material property adjustability is strong, material with water reliable in quality, fluidity of slurry are more preferable, volume stability and durability are stronger after slurry hardening.
Description
Technical field
The invention belongs to the field of building materials, specifically disclose a kind of reinforcing bar sleeve for connection grouting material and preparation method thereof.
Background technique
Reinforced bar sleeve grouting connection is a kind of new reinforcing steel bar connection side developed by engineering practice needs and technology and generated
Formula is particularly suitable for assembled architecture field.Reinforced bar sleeve is in the milk jointing mainly by Ribbed Bar, sleeve and grouting material three
Part forms.Its catenation principle is: after Ribbed Bar is inserted into sleeve, the cement base that ungauged regions or microdilatancy are perfused into sleeve is filled
Slurry fills the gap between sleeve and reinforcing bar.Therefore, high performance grouting material is the key that realize longitudinally connected, performance
Superiority and inferiority plays a crucial role the globality and anti-seismic performance etc. that ensure structural system.
It is the dry mash that component and ratio have been fixed that current reinforcing bar sleeve for connection grouting material, which is generally material, is passed through
The method added water and stirred is carried out using but there are some problems in practical applications.It has been fixed using material component and ratio
Grouting material, in the limited situation of water consumption adjustable extent, the performance of grouting material such as mobility is also substantially stationary, thus nothing
Method is effectively adjusted according to Practical Project environmental change.There is also certain shadows to its performance for grouting material mixing water quality
It rings, and existing water use model is not scientific, is mostly arbitrarily fetched water according to construction site convenience, mixing water quality is unable to get
Effectively control.
In conclusion the existing grouting material undesirable problem of generally existing fluidity of slurry in practical engineering applications,
Its mobility waits further increasing.Therefore, it is necessary to develop, a kind of performance adjustability is good, mixing water reliable in quality, mobility
More preferably reinforcing bar sleeve for connection grouting material.
Summary of the invention
To overcome existing reinforcing bar sleeve for connection grouting material, performance adjustability is poor in practical engineering applications, mixing water matter
It measures less than the problem ensured and fluidity of slurry is undesirable, strong, mixing water matter that the present invention provides a kind of performance adjustabilitys
Measure reliable, fluidity of slurry more preferably reinforcing bar sleeve for connection grouting material and preparation method thereof.
Technical scheme is as follows:
A kind of reinforcing bar sleeve for connection grouting material is made of two kinds of components of A, B；
Wherein, the component A is made of following material: 350-400 parts of cement, 80-100 parts of admixture, sand 450-500
It is part, 0.04-0.06 parts of water-retaining agent, 1-1.5 parts of defoaming agent, 6-8 parts of non-time-release type water-reducing agent, 35-40 parts of composite expanding agent, compound
5-10 parts of early strength agent, based on parts by weight；
Wherein, the B component is made of following material: 0.5-1 parts of sustained-release water reducing agent, 40-50 parts of compound retarder, stone
40-60 parts of black alkene aqueous dispersions, 75-95 parts of deionized water, based on parts by weight.
The component A is dry powder-shaped, and B component is solution.
Preferably, the component A is made of following material: 370-380 parts of cement, 80-90 parts of admixture, sand 460-
480 parts, 0.04-0.06 parts of water-retaining agent, 1.2-1.5 parts of defoaming agent, 7-8 parts of non-time-release type water-reducing agent, composite expanding agent 35-40
Part, 6-8 parts of complex accelerator, based on parts by weight.
The cement is pressed by 52.5 grades of ordinary portland cements, 52.5 grades of sulphate aluminium cements, 62.5 grades of high alumina cements
Certain proportion compounds to obtain.Wherein 52.5 grades of ordinary portland cements, 52.5 grades of sulphate aluminium cements, 62.5 grades of high alumina cements
Mass ratio is (73-76): (14-16): (8-13).
It is that intensity is not since sleeve grouting material is more demanding to early strength, such as 24 hours herein using three kinds of cement compounding
It obtains and is less than 35MPa, the hydration rate of ordinary portland cement is slow compared with sulphate aluminium cement and high alumina cement, and common silicic acid is used only
Salt cement is unable to satisfy requirement of the sleeve grouting material to early strength as cementitious material；Meanwhile be used only sulphate aluminium cement and
High alumina cement makees cementitious material, then there is the problems such as hydration rate is too fast, grouting material fluidity loss is larger, and be also possible to deposit
The problems such as hardened paste later period volume contraction is big, strength retraction；Therefore selection ordinary portland cement, sulphate aluminium cement,
The scheme of high alumina cement three compounding.
The admixture is compounded obtained by a certain percentage by I grades of flyash, activated grammite, superfine active brucite powder.
Wherein, I grades of flyash, activated grammite, ultra-fine brucite powder (d97=2um) mass ratio be (53-56): (24-26): (18-
23)。
The sand is compounded obtained by a certain percentage by 20-40 mesh quartz sand, 40-70 mesh baked sand, 70-120 mesh baked sand.
Wherein, 20-40 mesh quartz sand, 40-70 mesh baked sand, 70-120 mesh baked sand mass ratio be (24-26): (54-57):
(17-22)。
It is compounded herein using the sand of different meshes, in mortar preparation process, selects the sand of 20-120 mesh, be mainly based upon
Basic demand in GB/T14684-2011 " construction sand " to mortar sand grains diameter.Within the above range, increase 20-40 mesh stone
Sand main lift mortar mechanical property, but the fluidity and workability of mortar can be sacrificed；It is main to increase 70-120 mesh baked sand
The fluidity and workability of mortar are improved, but the mechanical property of mortar can be sacrificed；Meanwhile keeping the continuity pair of sand particle size distribution
Mortar overall performance is extremely important.Therefore, mortar can be made to obtain better comprehensive performance using the sand compounding of different meshes.
The water-retaining agent is selected from hydroxypropyl methyl cellulose (technical grade, 100000 viscosity, effective component >=99%).
The defoaming agent is selected from organic silicon defoamer (technical grade, effective component >=98%).
The non-time-release type water-reducing agent be selected from non-time-release type polycarboxylate water-reducer (water-reducing rate >=25%, effective component >=
97%).
The composite expanding agent is compounded obtained by a certain percentage by plastic expansion agent, mid-term swelling agent, late expansion agent.Its
In, plastic expansion agent is selected from CSA shape swelling agent (polar bear board)；Mid-term swelling agent is selected from HCSA type high performance expansion admixture
(Zhengzhou City's Coudé waterproof)；Late expansion agent is selected from activity MgO swelling agent (technical grade, activity degree 150s, MgO >=90%, chlorine
Compound≤0.2%, calcium oxide≤0.3%)；Wherein CSA shape swelling agent, HCSA type high performance expansion admixture, activity MgO expansion
The mass ratio of agent is (0.6-0.8): (73-75): (24.2-26.4).
The complex accelerator is by lithium nitrate (technical grade), sodium sulphate (technical grade), triethanolamine (technical grade) by certain
Ratio compounds to obtain.Wherein, the mass ratio that lithium nitrate, sodium sulphate, triethanolamine compound is (43.2-48.2): (50-55):
(1.6-1.8)。
Preferably, the B component be solution, be made of following material: 0.5-0.8 part of sustained-release water reducing agent, it is compound delay
Agent 40-50 parts, 45-55 parts of graphene aqueous dispersions, 80-90 parts of deionized water are coagulated, based on parts by weight.
The sustained-release water reducing agent is selected from sustained-release polycarboxylic water reducer, and (Switzerland's west card PC6A type, solution solid content are
50%).
By tartaric acid (technical grade), (Sichuan Province Shifang hongda limited liability company mentions the compound retarder with ardealite
For SO3Content 50.64%, moisture content 15.3%) by a certain percentage compounding obtain.Wherein, the mass ratio of tartaric acid, ardealite
For (1.6-2): (98-98.4).
The graphene aqueous dispersions are selected from graphene aqueous dispersions (the rich graphite of Suzhou carbon that commercial concentration is 4-6mg/ml
Alkene Science and Technology Ltd. TF-12055 type).
A kind of preparation method of reinforcing bar sleeve for connection grouting material, comprising the following steps:
It selects low-speed mixer (400~600rpm) to be stirred, before stirring, first B component is added in stirring container, side
The weight ratio of stirring side addition component A, component A and B component is (82-86): (14-18) is further stirred well to mixing
Object substantially uniformity is not agglomerated, and the grouting material being stirred then is stood 1-2min, after the air discharge in slurry, continues to stir
It mixes after 1-2min to get grouting material.
The beneficial effects of the present invention are:
The present invention provides a kind of reinforcing bar sleeve for connection grouting material, is made of two kinds of components of A, B, component A is dry powder-shaped, B
Component is solution.Wherein, component A is made of following material: 350-400 parts of cement, 80-100 parts of admixture, 450-500 parts of sand,
0.04-0.06 parts of water-retaining agent, 1-1.5 parts of defoaming agent, 6-8 parts of non-time-release type water-reducing agent, 35-40 parts of composite expanding agent, compound morning
Strong 5-10 parts of agent, based on parts by weight；B component is compounded to obtain by following material: 0.5-1 parts of sustained-release water reducing agent, compound slow setting
40-50 parts of agent, 40-60 parts of graphene aqueous dispersions, 75-95 parts of deionized water, based on parts by weight.Above-mentioned A, B component are matched
After material, with certain stirring means after mixing evenly up to grouting material.
The main performance index of sleeve grouting material includes fluidity, compression strength and plastic expansion rate.The present invention is by steel
Muscle sleeve for connection grouting material raw materials are decomposed into two kinds of components, i.e., above-mentioned component A and B component, by adjust component A with
Effective adjusting of its performance can be achieved in the proportion of B component.When increasing certain water consumption in traditional sleeve grouting material, slurry
The ratio of mud will increase, fluidity of slurry is increased to also result in compression strength decline, therefore the adjustable extent very little of water consumption；
The present invention is different from traditional sleeve grouting material, the dosage of B component in the appropriate increase present invention, the slow-release diminishing in B component
The increase of the dosage of agent, compound retarder and deionized water can significantly improve the mobility of grouting slurry body, the stone in B component
The increase of black alkene dosage can further improve the mechanical property of grouting material, increase to offset water consumption to grouting material mechanical property
The effect for being effectively improved grouting material fluidity but not influencing even to improve its compression strength finally can be achieved in the adverse effect of generation
Fruit.
A kind of reinforcing bar sleeve for connection grouting material provided by the invention, mixing water are deionized water, are contained in B component
In, when use, does not need volume external adding water, ensure that the reliability with water quality.The present invention introduces a small amount of delay in B component
Type water-reducing agent is released, by carrying out water-reducing property matching with water-reducing agent non-time-release in component A, is ensuring not occur bleeding, bleeding
In the case of can reduce the fall off rate of slurry fluidity, this is highly beneficial for needing long-time cementing operations.The present invention is in B component
In also introduce compound retarder, the compound retarder main component be ardealite, this for ardealite resource utilization have
There is certain value.The present invention introduces graphene in B component, and the excellent mechanical property of graphene is utilized, on generating
It states outside beneficial effect, the volume stability and durability after can also promoting sleeve grouting material hydration and hardening.Therefore, the present invention mentions
For a kind of performance adjustability is strong, water is of fine qualities, fluidity of slurry is more excellent, volume stability and the better reinforcing bar of durability
Sleeve for connection grouting material and its application method.
Specific embodiment:
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiments, to the present invention
It is described in further detail.It should be appreciated that described herein, specific examples are only used to explain the present invention, does not limit
In the present invention.
Embodiment 1:
A kind of reinforcing bar sleeve for connection grouting material is made of two kinds of components of A, B, and component A is dry powder-shaped, and B component is solution.
Wherein, component A is compounded to obtain by following material: 375 parts of cement, 85 parts of admixture, 470 parts of sand, hydroxypropyl methyl
0.05 part of cellulose (technical grade, 100000 viscosity, effective component >=99%), organic silicon defoamer (technical grade, effective component >=
98%) 1.2 parts, 7 parts of non-time-release type polycarboxylate water-reducer (water-reducing rate >=25%, effective component >=97%), composite expanding agent 40
Part, 8 parts of complex accelerator, based on parts by weight.
The compound proportion of cement in component A are as follows: 52.5 grades of ordinary portland cements are (public by Anhui Conch Cement share chivalrous person
Department provides) 281.25 parts, 52.5 grades of 56.25 parts of sulphate aluminium cements (being provided by Zhengzhou Dun Ni building materials Co., Ltd), 62.5 grades
37.5 parts of high alumina cement (being provided by Zhengzhou Xin Deyuan Refractory Co., ltd), based on parts by weight.
The compound proportion of admixture in component A are as follows: I grades of 46.75 parts of flyash, activated grammite (are had by the good building materials of Chengdu section
Limit company provides) 21.25 parts, ultra-fine brucite powder (d97=2um) 17 parts, based on parts by weight.
The compound proportion of sand in component A are as follows: 117.5 parts of 20-40 mesh quartz sand, 258.5 parts of 40-70 mesh baked sand, 70-
120 94 parts of mesh baked sands, based on parts by weight.
The compound proportion of composite expanding agent in component A are as follows: 0.28 part of CSA shape swelling agent (polar bear board), HCSA type
29.8 parts of high performance expansion admixture (Zhengzhou City's Coudé waterproof), activity MgO swelling agent (technical grade, activity degree 150s, MgO >=
90%, chloride≤0.2%, calcium oxide≤0.3%) 9.92 parts, based on parts by weight.
The compound proportion of complex accelerator in component A are as follows: 3.76 parts of lithium nitrate (technical grade), sodium sulphate (technical grade) 4.1
Part, 0.14 part of triethanolamine (technical grade), based on parts by weight.
Wherein, B component is compounded to obtain by following material: 0.6 part of sustained-release water reducing agent, 40 parts of compound retarder, graphene
45 parts of aqueous dispersions, 85 parts of deionized water, based on parts by weight.
The sustained-release water reducing agent is selected from sustained-release polycarboxylic water reducer, and (Switzerland's west card PC6A type, solution solid content are
50%).
The compound proportion of compound retarder in B component are as follows: 0.8 part of tartaric acid (technical grade), ardealite (moisture content
15.3%, SO3Content 50.64%, Sichuan Province Shifang hongda limited liability company provide) 39.2 parts, based on parts by weight.
Graphene aqueous dispersions are graphene aqueous dispersions (the rich graphite of Suzhou carbon that commercial concentration is 5mg/ml in B component
Alkene Science and Technology Ltd. TF-12055 type).
A kind of preparation method of reinforcing bar sleeve for connection grouting material, comprising the following steps:
It selects low-speed mixer (400~600rpm) to be stirred, before stirring, first B component is added in stirring container, side
The weight ratio of stirring side addition component A, component A and B component is 85:15, is further stirred well to mixture substantially uniformity
It does not agglomerate, the grouting material being stirred then is stood into 1-2min, after the air discharge in slurry, continue to stir 1-2min
Afterwards to get grouting material.
Embodiment 2:
A kind of reinforcing bar sleeve for connection grouting material is made of two kinds of components of A, B, and component A is dry powder-shaped, and B component is solution.
Wherein, component A is compounded to obtain by following material: 375 parts of cement, 85 parts of admixture, 480 parts of sand, hydroxypropyl methyl
0.05 part of cellulose (technical grade, 100000 viscosity, effective component >=99%), organic silicon defoamer (technical grade, effective component >=
98%) 1.2 parts, 7 parts of non-time-release type polycarboxylate water-reducer (water-reducing rate >=25%, effective component >=97%), composite expanding agent 40
Part, 8 parts of complex accelerator, based on parts by weight.
The compound proportion of cement in component A are as follows: 52.5 grades of ordinary portland cements are (public by Anhui Conch Cement share chivalrous person
Department provides) 281.25 parts, 52.5 grades of 56.25 parts, 62.5 grades of sulphate aluminium cements (being provided by Zhengzhou Dun Ni building materials Co., Ltd)
37.5 parts of high alumina cement (being provided by Zhengzhou Xin Deyuan Refractory Co., ltd), based on parts by weight.
The compound proportion of admixture in component A are as follows: I grades of 46.75 parts of flyash, activated grammite (are had by the good building materials of Chengdu section
Limit company provides) 21.25 parts, ultra-fine brucite powder (d97=2um) 17 parts, based on parts by weight.
The compound proportion of sand in component A are as follows: 120 parts of 20-40 mesh quartz sand, 264 parts of 40-70 mesh baked sand, 70-120 mesh
96 parts of baked sand, based on parts by weight.
The compound proportion of composite expanding agent in component A are as follows: 0.28 part of CSA shape swelling agent (polar bear board), HCSA type
29.8 parts of high performance expansion admixture (Zhengzhou City's Coudé waterproof), activity MgO swelling agent (technical grade, activity degree 150s, MgO >=
90%, chloride≤0.2%, calcium oxide≤0.3%) 9.92 parts, based on parts by weight.
The compound proportion of complex accelerator in component A are as follows: 3.76 parts of lithium nitrate (technical grade), sodium sulphate (technical grade) 4.1
Part, 0.14 part of triethanolamine (technical grade), based on parts by weight.
Wherein, B component is compounded to obtain by following material: 0.6 part of sustained-release water reducing agent, 40 parts of compound retarder, graphene
45 parts of aqueous dispersions, 85 parts of deionized water, based on parts by weight.
The sustained-release water reducing agent is selected from sustained-release polycarboxylic water reducer, and (Switzerland's west card PC6A type, solution solid content are
50%).
The compound proportion of compound retarder in B component are as follows: 0.8 part of tartaric acid (technical grade), ardealite (moisture content
15.3%, SO3Content 50.64%, Sichuan Province Shifang hongda limited liability company provide) 39.2 parts, based on parts by weight.
Graphene aqueous dispersions are graphene aqueous dispersions (the rich graphite of Suzhou carbon that commercial concentration is 5mg/ml in B component
Alkene Science and Technology Ltd. TF-12055 type).
A kind of preparation method of reinforcing bar sleeve for connection grouting material, comprising the following steps:
It selects low-speed mixer (400~600rpm) to be stirred, before stirring, first B component is added in stirring container, side
The weight ratio of stirring side addition component A, component A and B component is 83:17, is further stirred well to mixture substantially uniformity
It does not agglomerate, the grouting material being stirred then is stood into 1-2min, after the air discharge in slurry, continue to stir 1-2min
Afterwards to get grouting material.
Embodiment 3:
A kind of reinforcing bar sleeve for connection grouting material is made of two kinds of components of A, B, and component A is dry powder-shaped, and B component is solution.
Wherein, component A is compounded to obtain by following material: 380 parts of cement, 90 parts of admixture, 470 parts of sand, hydroxypropyl methyl
0.05 part of cellulose (technical grade, 100000 viscosity, effective component >=99%), organic silicon defoamer (technical grade, effective component >=
98%) 1.2 parts, 7 parts of non-time-release type polycarboxylate water-reducer (water-reducing rate >=25%, effective component >=97%), composite expanding agent 40
Part, 8 parts of complex accelerator, based on parts by weight.
The compound proportion of cement in component A are as follows: 52.5 grades of ordinary portland cements are (public by Anhui Conch Cement share chivalrous person
Department provides) 285 parts, 52.5 grades of 57 parts of sulphate aluminium cements (being provided by Zhengzhou Dun Ni building materials Co., Ltd), 62.5 grades of high aluminum waters
38 parts of mud (being provided by Zhengzhou Xin Deyuan Refractory Co., ltd), based on parts by weight.
The compound proportion of admixture in component A are as follows: I grades of 49.5 parts of flyash, activated grammite are (limited by the good building materials of Chengdu section
Company provides) 22.5 parts, ultra-fine brucite powder (d97=2um) 18 parts, based on parts by weight.
The compound proportion of sand in component A are as follows: 117.5 parts of 20-40 mesh quartz sand, 258.5 parts of 40-70 mesh baked sand, 70-
120 94 parts of mesh baked sands, based on parts by weight.
The compound proportion of composite expanding agent in component A are as follows: 0.28 part of CSA shape swelling agent (polar bear board), HCSA type
29.8 parts of high performance expansion admixture (Zhengzhou City's Coudé waterproof), activity MgO swelling agent (technical grade, activity degree 150s, MgO >=
90%, chloride≤0.2%, calcium oxide≤0.3%) 9.92 parts, based on parts by weight.
The compound proportion of complex accelerator in component A are as follows: 3.76 parts of lithium nitrate (technical grade), sodium sulphate (technical grade) 4.1
Part, 0.14 part of triethanolamine (technical grade), based on parts by weight.
Wherein, B component is compounded to obtain by following material: 0.6 part of sustained-release water reducing agent, 40 parts of compound retarder, graphene
45 parts of aqueous dispersions, 85 parts of deionized water, based on parts by weight.
The sustained-release water reducing agent is selected from sustained-release polycarboxylic water reducer, and (Switzerland's west card PC6A type, solution solid content are
50%).
The compound proportion of compound retarder in B component are as follows: 0.8 part of tartaric acid (technical grade), ardealite (moisture content
15.3%, SO3Content 50.64%, Sichuan Province Shifang hongda limited liability company provide) 39.2 parts, based on parts by weight.
Graphene aqueous dispersions are graphene aqueous dispersions (the rich graphite of Suzhou carbon that commercial concentration is 5mg/ml in B component
Alkene Science and Technology Ltd. TF-12055 type).
A kind of preparation method of reinforcing bar sleeve for connection grouting material, comprising the following steps:
It selects low-speed mixer (400~600rpm) to be stirred, before stirring, first B component is added in stirring container, side
The weight ratio of stirring side addition component A, component A and B component is 85:15, is further stirred well to mixture substantially uniformity
It does not agglomerate, the grouting material being stirred then is stood into 1-2min, after the air discharge in slurry, continue to stir 1-2min
Afterwards to get grouting material.
Embodiment 4:
A kind of reinforcing bar sleeve for connection grouting material is made of two kinds of components of A, B, and component A is dry powder-shaped, and B component is solution.
Wherein, component A is compounded to obtain by following material: 370 parts of cement, 80 parts of admixture, 470 parts of sand, hydroxypropyl methyl
0.05 part of cellulose (technical grade, 100000 viscosity, effective component >=99%), organic silicon defoamer (technical grade, effective component >=
98%) 1.2 parts, 7 parts of non-time-release type polycarboxylate water-reducer (water-reducing rate >=25%, effective component >=97%), composite expanding agent 40
Part, 8 parts of complex accelerator, based on parts by weight.
The compound proportion of cement in component A are as follows: 52.5 grades of ordinary portland cements are (public by Anhui Conch Cement share chivalrous person
Department provides) 277.5 parts, 52.5 grades of 55.5 parts of sulphate aluminium cements (being provided by Zhengzhou Dun Ni building materials Co., Ltd), 62.5 grades of height
37 parts of aluminum water mud (being provided by Zhengzhou Xin Deyuan Refractory Co., ltd), based on parts by weight.
The compound proportion of admixture in component A are as follows: I grades of 44 parts of flyash, activated grammite are (by the limited public affairs of the good building materials of Chengdu section
Department provides) 20 parts, ultra-fine brucite powder (d97=2um) 16 parts, based on parts by weight.
The compound proportion of sand in component A are as follows: 117.5 parts of 20-40 mesh quartz sand, 258.5 parts of 40-70 mesh baked sand, 70-
120 94 parts of mesh baked sands, based on parts by weight.
The compound proportion of composite expanding agent in component A are as follows: 0.28 part of CSA shape swelling agent (polar bear board), HCSA type
29.8 parts of high performance expansion admixture (Zhengzhou City's Coudé waterproof), activity MgO swelling agent (technical grade, activity degree 150s, MgO >=
90%, chloride≤0.2%, calcium oxide≤0.3%) 9.92 parts, based on parts by weight.
The compound proportion of complex accelerator in component A are as follows: 3.76 parts of lithium nitrate (technical grade), sodium sulphate (technical grade) 4.1
Part, 0.14 part of triethanolamine (technical grade), based on parts by weight.
Wherein, B component is compounded to obtain by following material: 0.6 part of sustained-release water reducing agent, 40 parts of compound retarder, graphene
45 parts of aqueous dispersions, 85 parts of deionized water, based on parts by weight.
The sustained-release water reducing agent is selected from sustained-release polycarboxylic water reducer, and (Switzerland's west card PC6A type, solution solid content are
50%).
The compound proportion of compound retarder in B component are as follows: 0.8 part of tartaric acid (technical grade), ardealite (moisture content
15.3%, SO3Content 50.64%, Sichuan Province Shifang hongda limited liability company provide) 39.2 parts, based on parts by weight.
Graphene aqueous dispersions are graphene aqueous dispersions (the rich graphite of Suzhou carbon that commercial concentration is 5mg/ml in B component
Alkene Science and Technology Ltd. TF-12055 type).
A kind of preparation method of reinforcing bar sleeve for connection grouting material, comprising the following steps:
It selects low-speed mixer (400~600rpm) to be stirred, before stirring, first B component is added in stirring container, side
The weight ratio of stirring side addition component A, component A and B component is 85:15, is further stirred well to mixture substantially uniformity
It does not agglomerate, the grouting material being stirred then is stood into 1-2min, after the air discharge in slurry, continue to stir 1-2min
Afterwards to get grouting material.
Embodiment 5:
A kind of reinforcing bar sleeve for connection grouting material is made of two kinds of components of A, B, and component A is dry powder-shaped, and B component is solution.
Wherein, component A is compounded to obtain by following material: 375 parts of cement, 85 parts of admixture, 470 parts of sand, hydroxypropyl methyl
0.05 part of cellulose (technical grade, 100000 viscosity, effective component >=99%), organic silicon defoamer (technical grade, effective component >=
98%) 1.2 parts, 7 parts of non-time-release type polycarboxylate water-reducer (water-reducing rate >=25%, effective component >=97%), composite expanding agent 40
Part, 8 parts of complex accelerator, based on parts by weight.
The compound proportion of cement in component A are as follows: 52.5 grades of ordinary portland cements are (public by Anhui Conch Cement share chivalrous person
Department provides) 281.25 parts, 52.5 grades of 56.25 parts, 62.5 grades of sulphate aluminium cements (being provided by Zhengzhou Dun Ni building materials Co., Ltd)
37.5 parts of high alumina cement (being provided by Zhengzhou Xin Deyuan Refractory Co., ltd), based on parts by weight.
The compound proportion of admixture in component A are as follows: I grades of 46.75 parts of flyash, activated grammite (are had by the good building materials of Chengdu section
Limit company provides) 21.25 parts, ultra-fine brucite powder (d97=2um) 17 parts, based on parts by weight.
The compound proportion of sand in component A are as follows: 117.5 parts of 20-40 mesh quartz sand, 258.5 parts of 40-70 mesh baked sand, 70-
120 94 parts of mesh baked sands, based on parts by weight.
The compound proportion of composite expanding agent in component A are as follows: 0.28 part of CSA shape swelling agent (polar bear board), HCSA type
29.8 parts of high performance expansion admixture (Zhengzhou City's Coudé waterproof), activity MgO swelling agent (technical grade, activity degree 150s, MgO >=
90%, chloride≤0.2%, calcium oxide≤0.3%) 9.92 parts, based on parts by weight.
The compound proportion of complex accelerator in component A are as follows: 3.76 parts of lithium nitrate (technical grade), sodium sulphate (technical grade) 4.1
Part, 0.14 part of triethanolamine (technical grade), based on parts by weight.
Wherein, B component is compounded to obtain by following material: 0.6 part of sustained-release water reducing agent, 40 parts of compound retarder, graphene
50 parts of aqueous dispersions, 80 parts of deionized water, based on parts by weight.
The sustained-release water reducing agent is selected from sustained-release polycarboxylic water reducer, and (Switzerland's west card PC6A type, solution solid content are
50%).
The compound proportion of compound retarder in B component are as follows: 0.8 part of tartaric acid (technical grade), ardealite (moisture content
15.3%, SO3Content 50.64%, Sichuan Province Shifang hongda limited liability company provide) 39.2 parts, based on parts by weight.
Graphene aqueous dispersions are graphene aqueous dispersions (the rich graphite of Suzhou carbon that commercial concentration is 5mg/ml in B component
Alkene Science and Technology Ltd. TF-12055 type).
A kind of preparation method of reinforcing bar sleeve for connection grouting material, comprising the following steps:
It selects low-speed mixer (400~600rpm) to be stirred, before stirring, first B component is added in stirring container, side
The weight ratio of stirring side addition component A, component A and B component is 85:15, is further stirred well to mixture substantially uniformity
It does not agglomerate, the grouting material being stirred then is stood into 1-2min, after the air discharge in slurry, continue to stir 1-2min
Afterwards to get grouting material.
By the reinforcing bar sleeve for connection grouting material and certain commercially available reinforcing bar sleeve for connection grouting material of Examples 1 to 5 preparation
Performance comparison is carried out, as a result as follows:
Remarks: the ratio of water to material of certain commercially available reinforcing bar sleeve for connection grouting material is identical as embodiment 1.
By data comparison in upper table it is found that comparing the commercially available reinforcing bar sleeve for connection grouting material of Mr. Yu, Examples 1 to 5 preparation
Reinforcing bar sleeve for connection grouting material have and better mobility and mobility holding capacity, higher compression strength and mould to swollen
Swollen rate.1 and embodiment 2 are implemented in comparison, compare embodiment 1, the dosage of B component is increased in embodiment 2, test data shows reality
Example 2 is applied with better mobility and slightly higher compression strength value, this illustrates that reinforcing bar sleeve for connection provided by the invention fills
Slurry has stronger performance adjustability, in particular for grouting material mobility.1 and embodiment 5 are implemented in comparison, compare embodiment
1, increase the dosage of graphene in embodiment 2, test data shows that embodiment 5 has better compression strength value and slightly lower
Fluidity, this illustrates that graphene is introduced in the present invention can further improve the mechanical property of grouting material.
Claims (12)
1. a kind of reinforcing bar sleeve for connection grouting material, it is characterised in that: be made of two kinds of components of A, B；
Wherein, the component A is made of following material: 350-400 parts of cement, 450-500 parts of sand, is protected 80-100 parts of admixture
0.04-0.06 parts of aqua, 1-1.5 parts of defoaming agent, 6-8 parts of non-time-release type water-reducing agent, 35-40 parts of composite expanding agent, composite high-early strength
5-10 parts of agent；
The B component is made of following material: 0.5-1 parts of sustained-release water reducing agent, 40-50 parts of compound retarder, graphene moisture
40-60 parts of dispersion liquid, 75-95 parts of deionized water, based on parts by weight.
2. a kind of reinforcing bar sleeve for connection grouting material according to claim 1, it is characterised in that: the component A is by following
Material composition: 370-380 parts of cement, 80-90 parts of admixture, 460-480 parts of sand, 0.04-0.06 parts of water-retaining agent, defoaming agent 1.2-
1.5 parts, 7-8 parts of non-time-release type water-reducing agent, 35-40 parts of composite expanding agent, 6-8 parts of complex accelerator；The B component is by following material
Material composition: 0.5-0.8 parts of sustained-release water reducing agent, 40-50 parts of compound retarder, 45-55 parts of graphene aqueous dispersions, deionized water
80-90 parts, based on parts by weight.
3. a kind of reinforcing bar sleeve for connection grouting material according to claim 1 or 2, it is characterised in that: the cement by
52.5 grades of ordinary portland cements, 52.5 grades of sulphate aluminium cements, 62.5 grades of high alumina cements compound obtain by a certain percentage, wherein
52.5 grades of ordinary portland cements, 52.5 grades of sulphate aluminium cements, 62.5 grades of high alumina cements mass ratio be (73-76): (14-
16): (8-13).
4. a kind of reinforcing bar sleeve for connection grouting material according to claim 1 or 2, it is characterised in that: the admixture
It is compounded obtained by a certain percentage by I grades of flyash, activated grammite, superfine active brucite powder, wherein I grades of flyash, activated silicas
Grey, ultra-fine brucite powder (d97=2um) mass ratio be (53-56): (24-26): (18-23).
5. a kind of reinforcing bar sleeve for connection grouting material according to claim 1 or 2, it is characterised in that: the sand is by 20-40
Mesh quartz sand, 40-70 mesh baked sand, 70-120 mesh baked sand compound obtain by a certain percentage.Wherein, 20-40 mesh quartz sand,
40-70 mesh baked sand, 70-120 mesh baked sand mass ratio be (24-26): (54-57): (17-22).
6. a kind of reinforcing bar sleeve for connection grouting material according to claim 1 or 2, it is characterised in that: the water-retaining agent choosing
From hydroxypropyl methyl cellulose；The defoaming agent is selected from organic silicon defoamer, and the non-time-release type water-reducing agent is selected from non-time-release type
Polycarboxylate water-reducer.
7. a kind of reinforcing bar sleeve for connection grouting material according to claim 1 or 2, it is characterised in that: described composite expanded
Agent is compounded obtained by a certain percentage by plastic expansion agent, mid-term swelling agent, late expansion agent, and plastic expansion agent is selected from CSA shape
Property swelling agent, mid-term swelling agent be selected from HCSA type high performance expansion admixture, late expansion agent be selected from activity MgO swelling agent, CSA shape
Property swelling agent, HCSA type high performance expansion admixture, activity MgO swelling agent mass ratio be (0.6-0.8): (73-75): (24.2-
26.4)。
8. a kind of reinforcing bar sleeve for connection grouting material according to claim 1 or 2, it is characterised in that: the composite high-early strength
Agent is compounded by a certain percentage by lithium nitrate, sodium sulphate, triethanolamine and is obtained, wherein the quality of lithium nitrate, sodium sulphate, triethanolamine
Than for (43.2-48.2): (50-55): (1.6-1.8).
9. a kind of reinforcing bar sleeve for connection grouting material according to claim 1 or 2, it is characterised in that: the slow-release subtracts
Aqua is selected from sustained-release polycarboxylic water reducer.
10. a kind of reinforcing bar sleeve for connection grouting material according to claim 1 or 2, it is characterised in that: the compound slow setting
Agent is compounded to obtain by a certain percentage by tartaric acid with ardealite, wherein the mass ratio of tartaric acid and ardealite is (1.6-2):
(98-98.4)。
11. a kind of reinforcing bar sleeve for connection grouting material according to claim 1 or 2, it is characterised in that: the graphene water
Dispersion liquid is selected from the graphene aqueous dispersions that commercial concentration is 4-6mg/ml.
12. according to claim 1 to a kind of preparation method of reinforcing bar sleeve for connection grouting material described in 11, including following step
It is rapid: to select low-speed mixer to be stirred, before stirring, first B component is added in stirring container, component A, A are added while stirring
The weight ratio of component and B component is (82-86): (14-18) is further stirred well to mixture substantially uniformity and does not agglomerate,
Then by the grouting material being stirred stand 1-2min, after in slurry air discharge after, continue stir 1-2min after to get grouting
Material.
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| CN109809770A (en) * | 2019-03-25 | 2019-05-28 | 南京天亚新材料有限公司 | A kind of grouting material formula and the wall construction method using the grouting material |
| CN109959683A (en) * | 2019-04-18 | 2019-07-02 | 南通大学 | A kind of detection method of sleeve Grouted density quality |
| CN110540401A (en) * | 2019-10-22 | 2019-12-06 | 武汉合创炬盛科技有限公司 | sleeve grouting material for high-temperature steel bar connection and preparation method thereof |
| CN112745093A (en) * | 2021-01-11 | 2021-05-04 | 湖北工业大学 | Early-strength high-temperature-resistant sleeve grouting material and preparation method thereof |
| CN112794689A (en) * | 2020-12-31 | 2021-05-14 | 上海三瑞高分子材料股份有限公司 | Sleeve grouting material for connecting assembled construction steel bars |
| CN114773009A (en) * | 2022-04-29 | 2022-07-22 | 宝武环科武汉金属资源有限责任公司 | Novel high-strength grouting material and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109809770A (en) * | 2019-03-25 | 2019-05-28 | 南京天亚新材料有限公司 | A kind of grouting material formula and the wall construction method using the grouting material |
| CN109959683A (en) * | 2019-04-18 | 2019-07-02 | 南通大学 | A kind of detection method of sleeve Grouted density quality |
| CN110540401A (en) * | 2019-10-22 | 2019-12-06 | 武汉合创炬盛科技有限公司 | sleeve grouting material for high-temperature steel bar connection and preparation method thereof |
| CN110540401B (en) * | 2019-10-22 | 2022-06-28 | 武汉合创炬盛科技有限公司 | Sleeve grouting material for high-temperature steel bar connection and preparation method thereof |
| CN112794689A (en) * | 2020-12-31 | 2021-05-14 | 上海三瑞高分子材料股份有限公司 | Sleeve grouting material for connecting assembled construction steel bars |
| CN112745093A (en) * | 2021-01-11 | 2021-05-04 | 湖北工业大学 | Early-strength high-temperature-resistant sleeve grouting material and preparation method thereof |
| CN114773009A (en) * | 2022-04-29 | 2022-07-22 | 宝武环科武汉金属资源有限责任公司 | Novel high-strength grouting material and preparation method thereof |
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