CN107337370A - High strength fibre concrete additive and preparation method thereof and concrete - Google Patents
High strength fibre concrete additive and preparation method thereof and concrete Download PDFInfo
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- CN107337370A CN107337370A CN201710366449.3A CN201710366449A CN107337370A CN 107337370 A CN107337370 A CN 107337370A CN 201710366449 A CN201710366449 A CN 201710366449A CN 107337370 A CN107337370 A CN 107337370A
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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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
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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
-
- 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)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a kind of high strength fibre concrete additive and preparation method thereof and concrete, the preparation method includes the step of mixing vinal, propane diols, dimethylformamide, the iso stearyl titanate esters of isopropyl three, silicate mineral grain, calcium chloride, metakaolin and kieselguhr.The preparation method of the present invention is simple, and raw material is easy to get, meanwhile, high strength fibre concrete additive prepared by the present invention can not only improve the compression strength of concrete after solidification, while can improve the tensile splitting strength after concrete setting.
Description
Technical field
The present invention relates to concrete, in particular it relates to a kind of preparation method of high strength fibre concrete additive, coagulation
Soil additive and concrete.
Background technology
Pipe gallery, i.e., the underground urban duct synthesis corridor being spliced to form with box culvert, i.e., build one in Urban Underground
Tunnel space, by electric power, communication, the various utilities pipelines such as combustion gas, heat supply, plumbing are integrated in one, provided with special access hole,
Hoisting port and monitoring system, implement unified planning, Uniting, unified construction and management, be the important base for ensureing city operations
Infrastructure and " lifeline ".It is to implement unified planning, design, construction and maintenance, is built in Urban Underground and is used to lay municipal public affairs
With the public utility of pipeline.
For the box culvert for forming piping lane, acting on the load of box culvert generally has vertical native load, live load, box culvert certainly
Gravity, the lateral pressure of soil and interior external water pressure etc..Known concrete component is rigid structure, at present, to known coagulation
Compression strength is more focused in the judge of native component, and therefore, existing concrete component compression strength is strong, but lacking toughness, and splitting is anti-
Tensile strength is weak, and concrete component matter is crisp, and cracking, breakage easily occurs in surface；Main cause is the capillary in it after concrete setting
Porosity is higher, and tensile splitting strength is poor, and such concrete component causes coagulation in the presence of frequent or moment weight or impulsive force
Native component is frequently or line concentration carries and make it that component surface appearance is cracked, is damaged, not only the service life of reduction concrete component,
Component fracture will cause crushing accident during badly broken.
Therefore, on the basis of ensureing that concrete has preferable compression strength, the tensile splitting strength of concrete is improved, is dropped
Low capillary porosity, it is current urgent problem to be solved.
The content of the invention
It is an object of the invention to provide a kind of high strength fibre concrete additive and preparation method thereof and concrete, protecting
On the basis of card concrete has preferable compression strength, the tensile splitting strength of concrete is improved.Meanwhile preparation side of the invention
Method is simple, and raw material is easy to get.
To achieve these goals, the invention provides a kind of preparation method of high strength fibre concrete additive, institute
Stating preparation method is included vinal, propane diols, dimethylformamide, the iso stearyl titanate esters of isopropyl three, silicic acid
The step of salt mineral particle, calcium chloride, metakaolin and kieselguhr mix.
Present invention also offers a kind of high strength fibre concrete additive prepared according to previously described preparation method.
Moreover, the present invention also provides a kind of high strength fibre concrete, and the raw material of concrete includes：It is cement, sand, broken
Stone, flyash, water and previously described high strength fibre concrete additive.
In the above-mentioned technical solutions, the present invention prepares the raw material composition of high strength fibre concrete additive by control：
The preparation method is included vinal, propane diols, dimethylformamide, the iso stearyl titanate esters of isopropyl three, silicon
The step of hydrochlorate mineral particle, calcium chloride, metakaolin and kieselguhr mix, is prepared for a kind of high strength fibre concrete
Additive.Vinal, propane diols, dimethylformamide, the iso stearyl titanate esters of isopropyl three, silicate mineral grain,
Calcium chloride, metakaolin and diatomite act synergistically, and obtained high strength fibre concrete additive can not only improve
The compression strength of concrete after solidification, while the tensile splitting strength after concrete setting can be improved.
Other features and advantages of the present invention will be described in detail in subsequent specific embodiment part.
Embodiment
The embodiment of the present invention is described in detail below.It is it should be appreciated that described herein specific
Embodiment is merely to illustrate and explain the present invention, and is not intended to limit the invention.
The end points of disclosed scope and any value are not limited to the accurate scope or value herein, these scopes or
Value should be understood to comprising the value close to these scopes or value.For number range, between the endpoint value of each scope, respectively
It can be combined with each other between the endpoint value of individual scope and single point value, and individually between point value and obtain one or more
New number range, these number ranges should be considered as specific open herein.
The invention provides a kind of preparation method of high strength fibre concrete additive, the preparation method includes will be poly-
Alcohol fibers, propane diols, dimethylformamide, the iso stearyl titanate esters of isopropyl three, silicate mineral grain, calcium chloride, partially
The step of kaolin and kieselguhr mix.
In the above-mentioned technical solutions, the present invention prepares the raw material composition of high strength fibre concrete additive by control：
The preparation method is included vinal, propane diols, dimethylformamide, the iso stearyl titanate esters of isopropyl three, silicon
The step of hydrochlorate mineral particle, calcium chloride, metakaolin and kieselguhr mix, is prepared for a kind of high strength fibre concrete
Additive.Vinal, propane diols, dimethylformamide, the iso stearyl titanate esters of isopropyl three, silicate mineral grain,
Calcium chloride, metakaolin and diatomite act synergistically, and obtained high strength fibre concrete additive can not only improve
The compression strength of concrete after solidification, while the tensile splitting strength after concrete setting can be improved.
In the present invention, the molecular weight of vinal can select in a variety of scopes, in order that raw material is easy to get, simultaneously
Production cost is reduced, in the present invention, it is preferred to the number-average molecular weight of vinal is 60000~150000, thermal decomposition temperature
Spend for 200~220 DEG C, fusing point is 225~230 DEG C.
In the above-mentioned technical solutions, silicate mineral grain can have multiple choices, in order that obtained high strength fibre mixes
Solidifying soil additive dispersivity is preferable, while plays preferably synergy with other components, it is preferable that silicate mineral grain is cloud
At least one of mother, carclazyte, feldspar, quartz.
Meanwhile the particle diameter of silicate mineral grain has multiple choices, in order to further make obtained high strength fibre coagulation
Soil additive dispersivity is preferable, while plays preferably synergy with other components, it is preferable that the particle diameter of silicate mineral grain
For the mesh of 60 mesh -400.
In the above-mentioned technical solutions, metakaolin and diatomite can select in relative broad range, as long as it meets concrete
The requirement of additive can either realize the present invention.
In the above-mentioned technical solutions, it is different in order to improve vinal, propane diols, dimethylformamide, isopropyl three
Stearyl titanate esters, silicate mineral grain, calcium chloride, metakaolin and diatomite act synergistically, and make obtained high intensity
Fiber concrete additive improves the compression strength of concrete after solidification, while can improve the Split-tension of Rolled after concrete setting
Intensity, it is preferable that in parts by weight：Vinal 50-80 parts, propane diols 10-15 parts, dimethylformamide 10-15 parts,
The iso stearyl titanate esters 5-8 parts of isopropyl three, silicate mineral grain 20-30 parts, calcium chloride 8-10 parts, metakaolin 10-15 parts
With diatomite 8-12 parts.
In above-mentioned embodiment, heating mixing temperature and time in preparation method can select in relative broad range
Select, in order that obtained high strength fibre concrete additive improves the compression strength of concrete after solidification, while can improve
Tensile splitting strength after concrete setting, in addition, saving production cost, it is preferable that heating mixing temperature is 180-220 DEG C,
Time is 20-48 hours.
Meanwhile the present invention also provides high strength fibre concrete additive prepared by a kind of previously described preparation method.
The high strength fibre concrete additive can not only improve the compression strength of concrete after solidification, while can improve concrete
Tensile splitting strength after solidification.
In addition, the present invention also provides a kind of high strength fibre concrete, the raw material of concrete includes：Cement, sand, rubble,
Flyash, water and previously described high strength fibre concrete additive.
The high strength fibre concrete not only has preferable compression strength, while the Split-tension of Rolled after concrete setting is strong
Degree is preferable.
In the technical scheme, cement, sand, rubble, flyash can select in relative broad range, as long as meeting concrete
Raw material requirement.
In order to further improve the compression strength of high strength fibre concrete, the Split-tension of Rolled improved after concrete setting is strong
Preferably, the raw material of concrete includes degree：In parts by weight, 100 parts of cement, sand 20-30 parts, rubble 15-25 parts, flyash
10-13 parts, water 60-85 parts, high strength fibre concrete additive 15-25 parts.
In order to improve the binding ability of concrete material, strengthen the action effect of high strength fibre concrete additive, from
And preferably, the raw material of concrete is also included averagely the split tensile strength of raising concrete on the basis of concrete strength is improved
Particle diameter is less than 20mm, average pore size is less than 3mm honeycomb stone.
In above-mentioned embodiment, the addition of honeycomb stone can add in relative broad range, in order to further
The binding ability of concrete material is improved, strengthens the action effect of high strength fibre concrete additive, so as to improve coagulation
The split tensile strength of concrete is improved on the basis of native intensity, it is preferable that relative to the cement of 100 parts by weight of addition, honeycomb stone
Addition be 5-8 parts.
In this specific embodiment, the concrete initial set time can adjust in relative broad range, in order to further improve
The binding ability of concrete material, strengthen the action effect of high strength fibre concrete additive, so as to improve strong concrete
The split tensile strength of concrete is improved on the basis of degree, it is preferable that the concrete initial set time >=16min.
In this specific embodiment, concrete final setting time can adjust in relative broad range, in order to further improve
The binding ability of concrete material, strengthen the action effect of high strength fibre concrete additive, so as to improve strong concrete
The split tensile strength of concrete is improved on the basis of degree, it is preferable that final setting time≤45min.
In this specific embodiment, the compression strength of concrete can have wider scope, in order to improve coagulation
Make concrete that there is higher split tensile strength on the basis of native intensity, it is preferable that compression strength >=50MPa, Split-tension of Rolled are strong
Degree >=4.7MPa.
The present invention will be described in detail by way of examples below.
Concrete crushing strength and tensile splitting strength parameter are according to standard GB/T/T 50081- in the examples below
2002 detect and obtain.
Vinal selection number-average molecular weight is 90000, and heat decomposition temperature is 210 DEG C, and fusing point is 225 DEG C of poly- second
Enol fiber；Mica grain is selected in silicate mineral grain-by-grain seed selection；Cement is the conch cement of 425 trades mark；Metakaolin is purchased from the super board in Hunan
Group, average grain diameter are less than 2 μm；Diatomite is purchased from the tripolite filling material of Yixing City Jun Lian diatomite Co., Ltd；Sand is middle sand；
Ballast grain sizes are less than 45mm；Flyash is II grade of flyash；Other raw materials are commercially available product.
Embodiment 1
(1) high strength fibre concrete additive is prepared：In parts by weight, by 50 parts of vinal, propane diols 10
Part, 10 parts of dimethylformamide, 5 parts of three iso stearyl titanate esters of isopropyl, 20 parts of mica grain (particle diameter is 60 mesh), calcium chloride 8
8 parts of part, 10 parts of metakaolin and diatomite heating mixing, mixing temperature is 180 DEG C, and the time is 20 hours, obtains high strength fiber
Tie up concrete additive；
(2) concrete is prepared：In parts by weight, by 100 parts of cement, 20 parts of sand, 15 parts of rubble, 10 parts of flyash, water 60
Part and 5 parts of 15 parts of high strength fibre concrete additive and honeycomb stone (average grain diameter 15mm, average pore size 3mm) mix,
Concrete is made.Sample is prepared according to standard GB/T/T50081-2002 and detects compression strength and tensile splitting strength, is examined
Survey the results are shown in Table 1.
Embodiment 2
(1) high strength fibre concrete additive is prepared：In parts by weight, by 80 parts of vinal, propane diols 15
Part, 15 parts of dimethylformamide, 8 parts of three iso stearyl titanate esters of isopropyl, 30 parts of mica grain (particle diameter is 200 mesh), calcium chloride
12 parts of 10 parts, 15 parts of metakaolin and diatomite heating mixing, mixing temperature is 220 DEG C, and the time is 48 hours, is obtained high-strength
Spend fiber concrete additive；
(2) concrete is prepared：In parts by weight, by 100 parts of cement, 30 parts of sand, 25 parts of rubble, 13 parts of flyash, water 85
Part and 8 parts of 25 parts of high strength fibre concrete additive and honeycomb stone (average grain diameter 15mm, average pore size 3mm) mix,
Concrete is made.Sample is prepared according to standard GB/T/T50081-2002 and detects compression strength and tensile splitting strength, is examined
Survey the results are shown in Table 1.
Embodiment 3
(1) high strength fibre concrete additive is prepared：In parts by weight, by 65 parts of vinal, propane diols 13
Part, 13 parts of dimethylformamide, 7 parts of three iso stearyl titanate esters of isopropyl, 25 parts of mica grain (particle diameter is 400 mesh), calcium chloride 9
10 parts of part, 13 parts of metakaolin and diatomite heating mixing, mixing temperature is 200 DEG C, and the time is 36 hours, obtains high intensity
Fiber concrete additive；
(2) concrete is prepared：In parts by weight, by 100 parts of cement, 25 parts of sand, 20 parts of rubble, 11 parts of flyash, water 72
Part and 5 parts of 20 parts of high strength fibre concrete additive and honeycomb stone (average grain diameter 15mm, average pore size 3mm) mix,
Concrete is made.Sample is prepared according to standard GB/T/T50081-2002 and detects compression strength and tensile splitting strength, is examined
Survey the results are shown in Table 1.
Embodiment 4
(1) high strength fibre concrete additive is prepared：In parts by weight, by 65 parts of vinal, propane diols 13
Part, 13 parts of dimethylformamide, 7 parts of three iso stearyl titanate esters of isopropyl, 25 parts of mica grain (particle diameter is 400 mesh), calcium chloride 9
10 parts of part, 13 parts of metakaolin and diatomite heating mixing, mixing temperature is 200 DEG C, and the time is 36 hours, obtains high intensity
Fiber concrete additive；
(2) concrete is prepared：In parts by weight, by 100 parts of cement, 25 parts of sand, 20 parts of rubble, 11 parts of flyash, water 72
7 parts of part, 20 parts of high strength fibre concrete additive and honeycomb stone (average grain diameter 15mm, average pore size 3mm) mix, and make
Obtain concrete.Sample is prepared according to standard GB/T/T50081-2002 and detects compression strength and tensile splitting strength, is detected
It the results are shown in Table 1.
Comparative example 1
Concrete is prepared Following the procedure of Example 3, unlike, the method for preparing high strength fibre concrete additive
In, do not add vinal.
Comparative example 2
Concrete is prepared Following the procedure of Example 3, unlike, the method for preparing high strength fibre concrete additive
In, do not add propane diols.
Comparative example 3
Concrete is prepared Following the procedure of Example 3, unlike, the method for preparing high strength fibre concrete additive
In, do not add dimethylformamide.
Comparative example 4
Concrete is prepared Following the procedure of Example 3, unlike, the method for preparing high strength fibre concrete additive
In, the iso stearyl titanate esters of isopropyl three are not added.
Comparative example 5
Concrete is prepared Following the procedure of Example 3, unlike, the method for preparing high strength fibre concrete additive
In, mica grain is not added.
Comparative example 6
Concrete is prepared Following the procedure of Example 3, unlike, the method for preparing high strength fibre concrete additive
In, do not add calcium chloride.
Comparative example 7
Concrete is prepared Following the procedure of Example 3, unlike, the method for preparing high strength fibre concrete additive
In, do not add metakaolin.
Comparative example 8
Concrete is prepared Following the procedure of Example 3, unlike, the method for preparing high strength fibre concrete additive
In, do not add diatomite.
Table 1
| Embodiment is numbered | Compression strength (MPa) | Tensile splitting strength (MPa) |
| Embodiment 1 | 51.75 | 4.79 |
| Embodiment 2 | 52.28 | 4.87 |
| Embodiment 3 | 51.54 | 4.84 |
| Embodiment 4 | 51.88 | 4.89 |
| Comparative example 1 | 19.81 | 1.81 |
| Comparative example 2 | 22.79 | 1.83 |
| Comparative example 3 | 20.35 | 2.06 |
| Comparative example 4 | 21.85 | 1.94 |
| Comparative example 5 | 20.94 | 1.90 |
| Comparative example 6 | 21.82 | 1.91 |
| Comparative example 7 | 20.74 | 1.91 |
| Comparative example 8 | 21.65 | 1.92 |
The preferred embodiment of the present invention described in detail above, still, the present invention are not limited in above-mentioned embodiment
Detail, in the range of the technology design of the present invention, a variety of simple variants can be carried out to technical scheme, this
A little simple variants belong to protection scope of the present invention.
It is further to note that each particular technique feature described in above-mentioned embodiment, in not lance
In the case of shield, can be combined by any suitable means, in order to avoid unnecessary repetition, the present invention to it is various can
The combination of energy no longer separately illustrates.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should equally be considered as content disclosed in this invention.
Claims (10)
1. a kind of preparation method of high strength fibre concrete additive, it is characterised in that the preparation method is included poly- second
It is enol fiber, propane diols, dimethylformamide, the iso stearyl titanate esters of isopropyl three, silicate mineral grain, calcium chloride, higher
The step of ridge soil and kieselguhr mixing.
2. preparation method according to claim 1, wherein, in parts by weight：Vinal 50-80 parts, propane diols
10-15 parts, dimethylformamide 10-15 parts, the iso stearyl titanate esters 5-8 parts of isopropyl three, silicate mineral grain 20-30 parts,
Calcium chloride 8-10 parts, metakaolin 10-15 parts and diatomite 8-12 parts；
Preferably, the number-average molecular weight of vinal is 60000~150000.
3. preparation method according to claim 1, wherein, silicate mineral grain is in mica, carclazyte, feldspar, quartz
It is at least one；
Preferably, the particle diameter of silicate mineral grain is the mesh of 60 mesh -400.
4. preparation method according to claim 1, wherein, heating mixing temperature is 180-220 DEG C, and the time is that 20-48 is small
When.
A kind of 5. high strength fibre concrete prepared by preparation method according to any one of claim 1-4 claims
Additive.
6. a kind of high strength fibre concrete, it is characterised in that the raw material of concrete includes：Cement, sand, rubble, flyash, water
With the high strength fibre concrete additive described in claim 5.
7. high strength fibre concrete according to claim 6, wherein, the raw material of concrete includes：In parts by weight, water
100 parts of mud, sand 20-30 parts, rubble 15-25 parts, flyash 10-13 parts, water 60-85 parts, high strength fibre concrete additive
15-25 parts.
8. high strength fibre concrete according to claim 6, wherein, the raw material of concrete is also less than including average grain diameter
20mm, average pore size are less than 3mm honeycomb stone；
Wherein it is preferred to relative to the cement of 100 parts by weight of addition, the addition of honeycomb stone is 5-8 parts.
9. the high strength fibre concrete according to any one of claim 6-8, wherein, the concrete initial set time >=
16min；And/or final setting time≤45min.
10. the high strength fibre concrete according to any one of claim 6-8, wherein, compression strength >=50MPa, split
Split tensile strength >=4.7MPa.
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| CN201710366449.3A CN107337370A (en) | 2017-05-23 | 2017-05-23 | High strength fibre concrete additive and preparation method thereof and concrete |
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| CN201710366449.3A CN107337370A (en) | 2017-05-23 | 2017-05-23 | High strength fibre concrete additive and preparation method thereof and concrete |
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Application publication date: 20171110 |