CN109265094A - A kind of no ripple glaze shield duct piece concrete formulation and preparing process - Google Patents
A kind of no ripple glaze shield duct piece concrete formulation and preparing process Download PDFInfo
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- CN109265094A CN109265094A CN201811144007.5A CN201811144007A CN109265094A CN 109265094 A CN109265094 A CN 109265094A CN 201811144007 A CN201811144007 A CN 201811144007A CN 109265094 A CN109265094 A CN 109265094A
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- mass fraction
- sand
- water
- stone
- duct piece
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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
-
- 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
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00724—Uses not provided for elsewhere in C04B2111/00 in mining operations, e.g. for backfilling; in making tunnels or galleries
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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 technical solution of the present invention is as follows: a kind of no ripple glaze shield duct piece concrete formulation, including as following formula: high-strength cement, mass fraction 10%-20%；Coarse sand, the fineness modulus of the coarse sand are 2.5-2.8, mass fraction 17%-25%；Fine sand, mass fraction 2.55%-7.5%, the quality of the fine sand of the partial size less than or equal to 0.315mm and the coarse sand mass ratio are (0.15-0.3): 1；Stone, mass fraction 40%-48%；Water, mass fraction 5%-10%；Polycarboxylate water-reducer, mass fraction 0.5%-2%；Flyash, mass fraction 3%-8%；Edible seaweed powder, mass fraction is 1%-3%, in addition, pass through the order of addition of sand, cement, water and additive, stone, stainless steel fibre and/or carbon fiber, so that mutually being filled between concrete batching, reduce the possibility of bubble generation in partial size proportion so that after shield duct piece molding bubble it is few, closely knit, impervious it is strong, intensity is big.
Description
Technical field
The present invention relates to a kind of formula of concrete and preparing process, in particular to a kind of no ripple glaze shield duct piece coagulation
Soil formula and preparing process.
Background technique
Shield duct piece is the main mounting structure of shield-tunneling construction, is the innermost layer barrier in tunnel, carries and resists soil layer pressure
The effect of power, groundwater pressure and some special loads.Shield duct piece is the permanent lining, secondary lining structure of shield tunnel, shield pipe
Tablet quality is directly related to the total quality and safety in tunnel, influences the waterproof performance and endurance quality in tunnel.
During shield duct piece winter production, since environment temperature is lower, each raw material temperature is also very low, the aquation of cement
Effect is very slow, and the presetting period of concrete comes also very slow, this leverages the receipts water for pouring rear concrete and plastering, again
Due to walking about for assembly line mold, the not round and smooth of section of jurisdiction extrados is caused, forms " ripple glaze ", affects the apparent of section of jurisdiction
Quality.
This ripple glaze is usually concreting process of vibrating, and water or cement slurry isolation occur for inside concrete and surface
It is formed.Water-reducing agent supersaturation, concrete mix poor water retention property, are particularly easy to such situation occur.
Summary of the invention
The object of the present invention is to provide a kind of no ripple glaze shield duct piece concrete formulation and preparing process, that is, passes through height
The cooperation of intensity, the concrete formulation of good water-retaining property and gravel size size has developed high-intensitive and good-looking shield
Section of jurisdiction concrete formulation, and its preparing process is studied.
The technical solution of the present invention is as follows: a kind of no ripple glaze shield duct piece concrete formulation, including as following formula:
High-strength cement, mass fraction 10%-20%, the substrate as shield duct piece intensity；
Coarse sand, the fineness modulus of the coarse sand are 2.5-2.8, mass fraction 17%-25%；
Fine sand, mass fraction 2.55%-7.5%, partial size less than or equal to 0.315mm the fine sand quality with it is described
Coarse sand mass ratio is (0.15-0.3): 1；
By the limitation of coarse sand and fine sand partial size and mass ratio, fine sand is filled with the gap between coarse sand, so that because of sand
And the concrete pore rate formed reduces, so that section of jurisdiction after molding is more closely knit, reduces the formation of bubble.
Stone, mass fraction 40%-48%, the main component as concrete；
Water, mass fraction 5%-10%；
Polycarboxylate water-reducer, mass fraction 0.5%-2%, as water-reducing agent, so that section of jurisdiction molding is fast, bubble is few；
Flyash, mass fraction 3%-8% cooperate with the high-strength cement, the intensity after improving concrete formation；
Edible seaweed powder, mass fraction 1%-3%, edible seaweed powder can help concrete to provide thickening, slow setting, water conservation, raising
One or more compounds of the effects of bonding force form, and main component is ethers chemical substance.
Preferably, the stone is made of big stone and handstone, and the big cobble-stone diameter is 10mm-20mm, described small
Cobble-stone diameter is 5mm-10mm, and the mass ratio of the big stone and the handstone is 2:1, is made by the cooperation of big handstone
With so that handstone fills the gap between big stone, so that molding section of jurisdiction is more closely knit, reduction internal interstices are also beneficial to
Reduce the generation of bubble.
Preferably, the concrete formulation further includes that stainless steel fibre and/or carbon fiber 3%-5%, the stainless steel are fine
Dimension and/or carbon fiber are 5mm-30mm, by the addition of certain length stainless steel fibre and/or carbon fiber, so that fiber and mixed
Netted intertexture is formed between solidifying soil, the intensity of molding shield duct piece greatly improved.
Preferably, a kind of no ripple glaze shield duct piece concrete formulation, including as following formula:
High-strength cement, 15%；Coarse sand, the fineness modulus of the coarse sand are 2.5, mass fraction 20%；Fine sand, quality point
Number is 7%, and the quality of the fine sand of the partial size less than or equal to 0.315mm and the coarse sand mass ratio are 0.3:1；Stone, quality
Score is 43%；Water, mass fraction 5%；Polycarboxylate water-reducer, mass fraction 1%；Flyash, mass fraction 4%；
Edible seaweed powder, mass fraction 2%；Stainless steel fibre and/or carbon fiber 3%.
By above-mentioned shield duct piece concrete formulation, by the proportion of coarse sand and fine sand, water-reducing agent, edible seaweed powder use,
The use of defoaming agent, so that section of jurisdiction is in forming process, on the one hand, the generation for reducing bubble on source also adds not
Become rusty steel fibre and/or carbon fiber, so that the intensity of shield duct piece further increases, on the other hand, by adding edible seaweed powder, so that
Cohesive force, the water-retaining property of concrete improve, and reduce the generation of ripple glaze.
The present invention also provides a kind of preparing process of shield duct piece concrete, which comprises the steps of:
The first step, the weight ratio, weigh coarse sand and fine sand according to the above technical scheme, and mix in proportion；
Second step adds cement in the sand mixture into the first step and is uniformly mixed；
Third step is added water, polycarboxylate water-reducer into the mixture that second step obtains and is uniformly mixed；
4th step adds stone, stainless steel fibre and/or carbon fiber into the mixture that third step obtains, and mixes equal
It is even, obtain concrete；
5th step, concrete described in the 4th step receive water and touch face process greater than 2 hours in forming process.
By the order of addition of sand, cement, water and additive, stone, stainless steel fibre and/or carbon fiber, so that mixed
It is mutually filled between solidifying soil ingredient, the possibility of bubble generation is reduced in partial size proportion, so that after shield duct piece molding
Bubble is few, closely knit, impervious by force, intensity is big, in addition, receipts water is touched face process and is greater than 2 hours in concrete in forming process,
More general receipts water touches face process and extends 1 hour, so that the moisture of concrete is precipitated as far as possible, reduces ripple glaze and generates.
Specific embodiment
It below in conjunction with specific embodiment, elaborates to technical solution of the present invention, it should be understood that these embodiments are only
For illustrating the present invention rather than limiting the scope of the invention, after the present invention has been read, those skilled in the art are to this
The modification of the various equivalent forms of invention is each fallen in the application range as defined in the appended claims.
Embodiment 1
The technical solution of the present invention is as follows: a kind of no ripple glaze shield duct piece concrete formulation, including as following formula:
High-strength cement, mass fraction 10%, the substrate as shield duct piece intensity；
Coarse sand, the fineness modulus of the coarse sand are 2.5-2.8, mass fraction 25%；
Fine sand, mass fraction 7.5%, the quality of the fine sand of the partial size less than or equal to 0.315mm and the arenose
Amount is than being 0.3:1；
By the limitation of coarse sand and fine sand partial size and mass ratio, fine sand is filled with the gap between coarse sand, so that because of sand
And the concrete pore rate formed reduces, so that section of jurisdiction after molding is more closely knit, reduces the formation of bubble.
Stone, mass fraction 40%, the main component as concrete；
Water, mass fraction 6%；
Polycarboxylate water-reducer, mass fraction 0.5%, as water-reducing agent, so that section of jurisdiction molding is fast, bubble is few；
Flyash, mass fraction 8% cooperate with the high-strength cement, the intensity after improving concrete formation；
Edible seaweed powder, mass fraction 3%, edible seaweed powder can help concrete to provide thickening, slow setting, water conservation, improve bonding
One or more compounds of the effects of power form, and main component is ethers chemical substance.
Preferably, the stone is made of big stone and handstone, and the big cobble-stone diameter is 10mm-20mm, described small
Cobble-stone diameter is 5mm-10mm, and the mass ratio of the big stone and the handstone is 2:1, is made by the cooperation of big handstone
With so that handstone fills the gap between big stone, so that molding section of jurisdiction is more closely knit, reduction internal interstices are also beneficial to
Reduce the generation of bubble.
By above-mentioned shield duct piece concrete formulation, by the proportion of coarse sand and fine sand, water-reducing agent, edible seaweed powder use,
The use of defoaming agent, so that section of jurisdiction is in forming process, on the one hand, the generation for reducing bubble on source also adds not
Become rusty steel fibre and/or carbon fiber, so that the intensity of shield duct piece further increases, on the other hand, by adding edible seaweed powder, so that
Cohesive force, the water-retaining property of concrete improve, and reduce the generation of ripple glaze.
The present invention also provides a kind of preparing process of shield duct piece concrete, which comprises the steps of:
The first step, the weight ratio, weigh coarse sand and fine sand according to the above technical scheme, and mix in proportion；
Second step adds cement in the sand mixture into the first step and is uniformly mixed；
Third step is added water, polycarboxylate water-reducer into the mixture that second step obtains and is uniformly mixed；
4th step adds stone, stainless steel fibre and/or carbon fiber into the mixture that third step obtains, and mixes equal
It is even, obtain concrete；
5th step, concrete described in the 4th step receive water and touch face process greater than 2 hours in forming process.
By the order of addition of sand, cement, water and additive, stone, stainless steel fibre and/or carbon fiber, so that mixed
It is mutually filled between solidifying soil ingredient, the possibility of bubble generation is reduced in partial size proportion, so that after shield duct piece molding
Bubble is few, closely knit, impervious by force, intensity is big, in addition, receipts water is touched face process and is greater than 2 hours in concrete in forming process,
More general receipts water touches face process and extends 1 hour, so that the moisture of concrete is precipitated as far as possible, reduces ripple glaze and generates.
Embodiment 2
The technical solution of the present invention is as follows: a kind of no ripple glaze shield duct piece concrete formulation, including as following formula:
High-strength cement, mass fraction 20%, the substrate as shield duct piece intensity；
Coarse sand, the fineness modulus of the coarse sand are 2.5-2.8, mass fraction 17%；
Fine sand, mass fraction 3%, the quality and the coarse sand quality of the fine sand of the partial size less than or equal to 0.315mm
Than for 0.15:1；
By the limitation of coarse sand and fine sand partial size and mass ratio, fine sand is filled with the gap between coarse sand, so that because of sand
And the concrete pore rate formed reduces, so that section of jurisdiction after molding is more closely knit, reduces the formation of bubble.
Stone, mass fraction 45%, the main component as concrete；
Water, mass fraction 5%；
Polycarboxylate water-reducer, mass fraction 2%, as water-reducing agent, so that section of jurisdiction molding is fast, bubble is few；
Flyash, mass fraction 3% cooperate with the high-strength cement, the intensity after improving concrete formation；
Edible seaweed powder, mass fraction 2%, edible seaweed powder can help concrete to provide thickening, slow setting, water conservation, improve bonding
One or more compounds of the effects of power form, and main component is ethers chemical substance；
Stainless steel fibre and/or carbon fiber 3%, the stainless steel fibre and/or carbon fiber are 5mm-30mm, by certain
The addition of length stainless steel fibre and/or carbon fiber greatly improved into so that forming netted intertexture between fiber and concrete
The intensity of type shield duct piece.
Preferably, the stone is made of big stone and handstone, and the big cobble-stone diameter is 10mm-20mm, described small
Cobble-stone diameter is 5mm-10mm, and the mass ratio of the big stone and the handstone is 2:1, is made by the cooperation of big handstone
With so that handstone fills the gap between big stone, so that molding section of jurisdiction is more closely knit, reduction internal interstices are also beneficial to
Reduce the generation of bubble.
By above-mentioned shield duct piece concrete formulation, by the proportion of coarse sand and fine sand, water-reducing agent, edible seaweed powder use,
The use of defoaming agent, so that section of jurisdiction is in forming process, on the one hand, the generation for reducing bubble on source also adds not
Become rusty steel fibre and/or carbon fiber, so that the intensity of shield duct piece further increases, on the other hand, by adding edible seaweed powder, so that
Cohesive force, the water-retaining property of concrete improve, and reduce the generation of ripple glaze.
The present invention also provides a kind of preparing process of shield duct piece concrete, which comprises the steps of:
The first step, the weight ratio, weigh coarse sand and fine sand according to the above technical scheme, and mix in proportion；
Second step adds cement in the sand mixture into the first step and is uniformly mixed；
Third step is added water, polycarboxylate water-reducer into the mixture that second step obtains and is uniformly mixed；
4th step adds stone, stainless steel fibre and/or carbon fiber into the mixture that third step obtains, and mixes equal
It is even, obtain concrete；
5th step, concrete described in the 4th step receive water and touch face process greater than 2 hours in forming process.
By the order of addition of sand, cement, water and additive, stone, stainless steel fibre and/or carbon fiber, so that mixed
It is mutually filled between solidifying soil ingredient, the possibility of bubble generation is reduced in partial size proportion, so that after shield duct piece molding
Bubble is few, closely knit, impervious by force, intensity is big, in addition, receipts water is touched face process and is greater than 2 hours in concrete in forming process,
More general receipts water touches face process and extends 1 hour, so that the moisture of concrete is precipitated as far as possible, reduces ripple glaze and generates.
Claims (5)
1. a kind of no ripple glaze shield duct piece concrete formulation, which is characterized in that including as following formula:
High-strength cement, mass fraction 10%-20%；
Coarse sand, the fineness modulus of the coarse sand are 2.5-2.8, mass fraction 17%-25%；
Fine sand, mass fraction 2.55%-7.5%, the quality of the fine sand of the partial size less than or equal to 0.315mm and the coarse sand
Mass ratio is (0.15-0.3): 1；
Stone, mass fraction 40%-48%；
Water, mass fraction 5%-10%；
Polycarboxylate water-reducer, mass fraction 0.5%-2%；
Flyash, mass fraction 3%-8%；
Edible seaweed powder, mass fraction 1%-3%.
2. a kind of no ripple glaze shield duct piece concrete formulation as described in claim 1, which is characterized in that the stone is by big
Stone and handstone composition, the big cobble-stone diameter are 10mm-20mm, and the handstone partial size is 5mm-10mm, the great Shi
The sub mass ratio with the handstone is 2:1.
3. a kind of no ripple glaze shield duct piece concrete formulation as claimed in claim 1 or 2, which is characterized in that the coagulation
Soil formula further includes stainless steel fibre and/or carbon fiber 3%-5%, and the stainless steel fibre and/or carbon fiber are 5mm-30mm.
4. a kind of no ripple glaze shield duct piece concrete formulation as claimed in claim 3, which is characterized in that including matching as follows
Side:
High-strength cement, 15%；
Coarse sand, the fineness modulus of the coarse sand are 2.5, mass fraction 20%；
Fine sand, mass fraction 7%, the quality that partial size is less than or equal to the fine sand of 0.315mm are with the coarse sand mass ratio
0.3:1；
Stone, mass fraction 43%；
Water, mass fraction 5%；
Polycarboxylate water-reducer, mass fraction 1%；
Flyash, mass fraction 4%；
Edible seaweed powder, mass fraction 2%；
Stainless steel fibre and/or carbon fiber 3%.
5. a kind of preparing process of shield duct piece concrete, which comprises the steps of:
The first step, by weight ratio described in any claim 1-4, weigh coarse sand and fine sand, and mix in proportion；
Second step adds cement in the sand mixture into the first step and is uniformly mixed；
Third step is added water, polycarboxylate water-reducer into the mixture that second step obtains and is uniformly mixed；
4th step is added stone, stainless steel fibre and/or carbon fiber into the mixture that third step obtains, and is uniformly mixed, and obtains
To concrete；
5th step, concrete described in the 4th step receive water and touch face process greater than 2 hours in forming process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811144007.5A CN109265094A (en) | 2018-09-28 | 2018-09-28 | A kind of no ripple glaze shield duct piece concrete formulation and preparing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811144007.5A CN109265094A (en) | 2018-09-28 | 2018-09-28 | A kind of no ripple glaze shield duct piece concrete formulation and preparing process |
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| CN109265094A true CN109265094A (en) | 2019-01-25 |
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ID=65199137
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811144007.5A Pending CN109265094A (en) | 2018-09-28 | 2018-09-28 | A kind of no ripple glaze shield duct piece concrete formulation and preparing process |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110668755A (en) * | 2019-10-25 | 2020-01-10 | 郑州市汇通水泥预制品有限公司 | Concrete for subway shield segment, subway shield segment and preparation method thereof |
| CN112897978A (en) * | 2021-03-22 | 2021-06-04 | 长安大学 | Self-healing waterproof anti-permeability mortar and preparation method thereof |
| TWI783367B (en) * | 2021-02-04 | 2022-11-11 | 毅馨國際有限公司 | Pipe filling material and method of filling pipe without wall drilling |
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| CN105041336A (en) * | 2015-07-06 | 2015-11-11 | 中国建筑股份有限公司 | Ultra-high performance hybrid fiber concrete shield segment and preparation method thereof |
| CN107777961A (en) * | 2016-08-31 | 2018-03-09 | 北京市第五建筑工程集团有限公司 | It is easy to the High-strength self-compaction concrete of super high-rise pumping |
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2018
- 2018-09-28 CN CN201811144007.5A patent/CN109265094A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105041336A (en) * | 2015-07-06 | 2015-11-11 | 中国建筑股份有限公司 | Ultra-high performance hybrid fiber concrete shield segment and preparation method thereof |
| CN107777961A (en) * | 2016-08-31 | 2018-03-09 | 北京市第五建筑工程集团有限公司 | It is easy to the High-strength self-compaction concrete of super high-rise pumping |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110668755A (en) * | 2019-10-25 | 2020-01-10 | 郑州市汇通水泥预制品有限公司 | Concrete for subway shield segment, subway shield segment and preparation method thereof |
| TWI783367B (en) * | 2021-02-04 | 2022-11-11 | 毅馨國際有限公司 | Pipe filling material and method of filling pipe without wall drilling |
| CN112897978A (en) * | 2021-03-22 | 2021-06-04 | 长安大学 | Self-healing waterproof anti-permeability mortar and preparation method thereof |
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Application publication date: 20190125 |