CN109369121A - A kind of manufacture craft of high-elastic modulus fibre seif-citing rate regeneration concrete - Google Patents
A kind of manufacture craft of high-elastic modulus fibre seif-citing rate regeneration concrete Download PDFInfo
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- CN109369121A CN109369121A CN201811425828.6A CN201811425828A CN109369121A CN 109369121 A CN109369121 A CN 109369121A CN 201811425828 A CN201811425828 A CN 201811425828A CN 109369121 A CN109369121 A CN 109369121A
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- 239000004567 concrete Substances 0.000 title claims abstract description 109
- 239000000835 fiber Substances 0.000 title claims abstract description 68
- 230000008929 regeneration Effects 0.000 title claims abstract description 68
- 238000011069 regeneration method Methods 0.000 title claims abstract description 68
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 27
- 239000004568 cement Substances 0.000 claims abstract description 30
- 239000000843 powder Substances 0.000 claims abstract description 24
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229920001971 elastomer Polymers 0.000 claims abstract description 19
- 239000005060 rubber Substances 0.000 claims abstract description 19
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 19
- 239000010703 silicon Substances 0.000 claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 9
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 6
- 239000010959 steel Substances 0.000 claims abstract description 6
- 229920002748 Basalt fiber Polymers 0.000 claims abstract description 3
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 3
- 239000004917 carbon fiber Substances 0.000 claims abstract description 3
- 239000003365 glass fiber Substances 0.000 claims abstract description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 3
- 239000000203 mixture Substances 0.000 claims description 27
- 239000002002 slurry Substances 0.000 claims description 24
- 239000011083 cement mortar Substances 0.000 claims description 12
- 239000002689 soil Substances 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 6
- 229910000329 aluminium sulfate Inorganic materials 0.000 claims description 5
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 claims description 5
- 235000011128 aluminium sulphate Nutrition 0.000 claims description 5
- 239000003595 mist Substances 0.000 claims description 5
- 229910021487 silica fume Inorganic materials 0.000 claims description 5
- 239000010920 waste tyre Substances 0.000 claims description 5
- 230000015271 coagulation Effects 0.000 claims description 4
- 238000005345 coagulation Methods 0.000 claims description 4
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 2
- 150000004645 aluminates Chemical class 0.000 claims description 2
- 238000009825 accumulation Methods 0.000 claims 1
- 238000005452 bending Methods 0.000 abstract description 4
- 230000035515 penetration Effects 0.000 abstract description 4
- 239000012615 aggregate Substances 0.000 description 71
- 239000002956 ash Substances 0.000 description 14
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- 239000004576 sand Substances 0.000 description 6
- 239000002131 composite material Substances 0.000 description 4
- 238000011161 development Methods 0.000 description 4
- 230000018109 developmental process Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000001172 regenerating effect Effects 0.000 description 4
- 238000006467 substitution reaction Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 235000002918 Fraxinus excelsior Nutrition 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 239000003292 glue Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000010998 test method Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 239000003643 water by type Substances 0.000 description 3
- 210000000988 bone and bone Anatomy 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 230000000977 initiatory effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005213 imbibition Methods 0.000 description 1
- 230000009916 joint effect Effects 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000002688 soil aggregate Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- 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
- C04B2111/00017—Aspects relating to the protection of the environment
-
- 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
- C04B2111/20—Resistance against chemical, physical or biological attack
-
- 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
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/28—Fire resistance, i.e. materials resistant to accidental fires or high temperatures
-
- 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)
- Road Paving Structures (AREA)
Abstract
The present invention discloses a kind of manufacture craft of high-elastic modulus fibre seif-citing rate regeneration concrete, including following components: regenerated coarse aggregate, natural coarse aggregate, natural fine aggregate, cement, high efficiency water reducing agent, mixing water, fiber, miberal powder, silicon ash, rubber grain.Fiber uses one kind of the high-elastic modulus fibres such as steel fibre, carbon fiber, basalt fibre, glass fibre.The present invention mitigates the extension of microdefect inside regeneration concrete using high-elastic modulus fibre, improves bending resistance, tensile strength and the toughness of regeneration concrete；Simultaneously because fiber elasticity modulus with higher itself, can be improved the elasticity modulus of regeneration concrete and the rigidity of component.The intensity that concrete is improved using miberal powder and silicon ash, reduces creeping for concrete.The ductility that concrete is improved using rubber grain, is improved the Anti-Chloride Ion Penetration and frost resistance of regeneration concrete, enhances its durability.
Description
Technical field
The present invention relates to a kind of manufacture craft of regeneration concrete more particularly to a kind of high-elastic modulus fibre seif-citing rate regeneration are mixed
Coagulate the manufacture craft of soil.
Background technique
With the fast development of construction industry, a large amount of building waste is generated in building construction and demolishing process, wherein
30%~40% is discarded concrete, and thus the problems such as caused land occupation, environmental pollution has caused extensive concern both domestic and external.I
The social sustainable development strategy that government of state formulates, encourages the research and application of castoff regenerative technology.1997, firmly the portion of building will
" building waste residue comprehensive utilization " is included in scientific and technological achievement key popularized project.2002, Shanghai municipal government " will carry out exploitation regenerated
Abandon concrete and study new key technology and efficiently utilize it " it is included in key project.2010, the Ministry of Construction put into effect " mixed
Solidifying soil and mortar recycled fine aggregate " and " concrete regenerated coarse aggregate " two national standards, the engineering of recycled aggregate is answered
With being standardized.Currently, the problem of resource utilization of discarded concrete, has become the hot spot that current international community is paid close attention to jointly
One of with advanced problems.
By recycled concrete aggregate, after crushing, cleaning and grading, it is mixed that regeneration is mixed to form with gradation according to a certain percentage
Solidifying soil aggregate, by the concrete that it partly or entirely replaces natural aggregate to be formulated, referred to as regeneration concrete.Regeneration concrete
On the one hand technology realizes the cycling and reutilization of a large amount of discarded concretes, solve the problem of environmental pollution of discarded concrete；Separately
On the one hand, natural aggregate is replaced with the recycled aggregates of building waste, it is possible to reduce consumption of the construction industry to natural aggregate, from
And reduce exploitation to natural sand stone, to environmental protection, economize on resources, developing ecology building all has extremely important meaning.
However, recycled aggregate has the characteristics that porosity is high, water imbibition is strong, density is small low with intensity relative to natural aggregate.These are special
Point causes compression strength, tensile strength, flexural strength, elasticity modulus, durability of regeneration concrete etc. all to compare normal concrete
It is low, largely limit its popularization and application in engineering.
In this context, the present invention proposes a kind of novel high-elastic modulus fibre seif-citing rate regeneration concrete of composite material-,
High-elastic modulus fibre, miberal powder, silicon ash and rubber grain are added in regeneration concrete, is acted on and being mitigated using the bridge joint of high-elastic modulus fibre
The initiation and extension of microdefect, improve the property such as tension, bending resistance, shearing resistance, fire-resistance, ductility of regeneration concrete inside regeneration concrete
Energy；Using the high elastic modulus of fiber, the elasticity modulus of regeneration concrete is improved, when being fabricated to component, component can be effectively improved
Rigidity.The intensity of concrete is improved using miberal powder and silicon ash, and reduces creeping for it.Prolonging for concrete is improved using rubber
Property, improve the Anti-Chloride Ion Penetration and frost resistance of regeneration concrete, enhances its durability.Pass through this novel composite wood
The utilization efficiency of recycled aggregate can be improved in material, realizes the Sustainable Development Road of construction material.
Summary of the invention
It is an object of the present invention to make full use of discarded concrete, regeneration concrete, fiber concrete, seif-citing rate are mixed
Solidifying soil technology combines, and proposes a kind of novel high-elastic modulus fibre seif-citing rate regeneration concrete of composite material-, and provide its system
Make technique.Such new material, can solve discarded concrete recycles, regeneration concrete performance is poor, internal fissure excessively, prolong
The problems such as property is poor, can significantly improve the stress performance of regenerated aggregate concrete.
To achieve the purpose of the present invention, solution are as follows:
A kind of manufacture craft of high-elastic modulus fibre seif-citing rate regeneration concrete, comprising the following steps:
Step 1, by self-stressing cement, high-elastic modulus fibre, miberal powder, silicon ash, rubber grain, 2~8 points of high efficiency water reducing agent mix
Clock, until uniform；
Step 2, in 15 minutes, concrete mixing water will be added in the mixture of step 1, stirs 1.5~3 minutes,
Produce cement slurry；
Step 3, in 15 minutes, fine aggregate and mix 1.5~3 minutes will be added in the cement slurry of step 2, until equal
It is even, produce cement mortar slurry；
Step 4, it in 15 minutes, will be added in the cement mortar slurry of step 3 by natural coarse aggregate and regenerated coarse aggregate
The coarse aggregate of composition simultaneously mix 1.5~3 minutes, until it is uniform, produce high-elastic modulus fibre seif-citing rate regenerated aggregate concrete.It is described
High-elastic modulus fibre be high modulus fibre.High-elastic modulus fibre seif-citing rate regeneration concrete obtained will be completed in 30 minutes
It pours.If it exceeds 30 minutes, initial set has occurred in regeneration concrete, then the concrete cannot be reused because intensity declines.
A kind of manufacture craft of above-mentioned high-elastic modulus fibre seif-citing rate regeneration concrete, the parts by weight of each component are as follows:
240~1200 parts of regenerated coarse aggregate；
0~840 part of natural coarse aggregate；
Natural 500~800 parts of fine aggregate；
650~850 parts of cement；
0~15 part of high efficiency water reducing agent；
150~280 parts of mixing water；
0~156 part of high-elastic modulus fibre；
0~180 part of miberal powder；
0~60 part of silicon ash；
0~160 part of rubber grain.
A kind of manufacture craft of above-mentioned high-elastic modulus fibre seif-citing rate regeneration concrete, in the step 1, the seif-citing rate
Cement uses silicate self-stressing cement, aluminium sulfate self-stressing cement or aluminate self-stressing cement.
A kind of manufacture craft of above-mentioned high-elastic modulus fibre seif-citing rate regeneration concrete, in the step 1, the fiber is
One kind of the high-elastic modulus fibre such as steel fibre, carbon fiber, basalt fibre, glass fibre.
A kind of manufacture craft of above-mentioned high-elastic modulus fibre seif-citing rate regeneration concrete, in the step 1, the miberal powder is
Granulated blast-furnace miberal powder micro mist, product hierarchy are S95 grades.
A kind of manufacture craft of above-mentioned high-elastic modulus fibre seif-citing rate regeneration concrete, in the step 1, the silicon ash is
Specific surface area is 17900m2The level-one SILICA FUME of/kg.
A kind of manufacture craft of above-mentioned high-elastic modulus fibre seif-citing rate regeneration concrete, in the step 1, the rubber by
Waste tire of automobile is broken to be formed, and partial size is 1~2mm, apparent density 1225kg/m3, bulk density 617kg/m3。
A kind of manufacture craft of above-mentioned high-elastic modulus fibre seif-citing rate regeneration concrete, in the step 3, fine aggregate is used
Middle sand, fineness modulus are 2~3.
In a kind of manufacture craft of above-mentioned high-elastic modulus fibre seif-citing rate regeneration concrete, the step 4, coarse aggregate is adopted
It is formed with natural aggregate and regenerated coarse aggregate, regenerated coarse aggregate is discarded concrete test block through artificial, hammer crushing crusher machine institute
?.Coarse aggregate size is 5~25mm, and wherein regenerated coarse aggregate substitution rate is 30%~100%.
The present invention has the advantages that the deficiency in terms of overcoming Mechanical properties of recycled concrete and working performance, hews out
One can promote and apply the new road of Aggregate of recycled concrete, i.e., by it in conjunction with high-elastic modulus fibre, self-stressing cement, form one
The novel high-elastic modulus fibre seif-citing rate regeneration concrete of composite material-of kind.Mitigate regeneration concrete using the bridge joint effect of fiber
The initiation and extension of internal microdefect, improve the performances such as tension, bending resistance, shearing resistance, fire-resistance, the ductility of regeneration concrete；Utilize fibre
The high elastic modulus of dimension improves the elasticity modulus of regeneration concrete, when being fabricated to component, can effectively improve the rigidity of component.Benefit
The intensity that concrete is improved with miberal powder and silicon ash reduces always creeping and creeping substantially for regeneration concrete.It is improved using rubber mixed
The ductility for coagulating soil, improves the Anti-Chloride Ion Penetration and frost resistance of regeneration concrete, enhances its durability.
Specific embodiment
Below by embodiment, the technical solutions of the present invention will be further described.
[embodiment 1]
A kind of manufacture craft of high-elastic modulus fibre seif-citing rate regeneration concrete, comprising the following steps:
Step 1, by self-stressing cement, high-elastic modulus fibre, miberal powder, silicon ash, rubber grain, 2~8 points of high efficiency water reducing agent mix
Clock, until uniform；
Step 2, in 15 minutes, concrete mixing water will be added in the mixture of step 1, stirs 1.5~3 minutes,
Produce cement slurry；
Step 3, in 15 minutes, fine aggregate and mix 1.5~3 minutes will be added in the cement slurry of step 2, uniformly,
Produce cement mortar slurry；
Step 4, it in 15 minutes, will be added in the cement mortar slurry of step 3 by natural coarse aggregate and regenerated coarse aggregate
The coarse aggregate of composition simultaneously mix 1.5~3 minutes, until it is uniform, produce high-elastic modulus fibre seif-citing rate regenerated aggregate concrete.It is described
High-elastic modulus fibre be high modulus fibre.High-elastic modulus fibre seif-citing rate regeneration concrete obtained will be completed in 30 minutes
It pours.If it exceeds 30 minutes, initial set has occurred in regeneration concrete, then the concrete cannot be reused because intensity declines.
[embodiment 2]
1. by 750 parts of aluminium sulfate self-stressing cements, 47.1 parts of end crotch type steel fibers, 4.88 parts of miberal powders, 4.02 portions of rubbers
Glue particle, 2.22 parts of silicon ashes, 0.075 part high efficiency water reducing agent mix 2~8 minutes, until uniform；
2. 270.5 parts of mixing waters will be added in the mixture of step 1 in 15 minutes, stir 1.5~3 minutes, production
Cement slurry out；
3. 634.1 parts of fine aggregates and mix 1.5~3 minutes will be added in the cement slurry of step 2 in 15 minutes, until
Uniformly, cement mortar slurry is produced；
4. 182.3 parts of natural coarse aggregates, 546.7 parts of regeneration will be added in the cement mortar slurry of step 3 in 15 minutes
Coarse aggregate simultaneously mix 1.5~3 minutes, until it is uniform, produce fiber seif-citing rate regenerated aggregate concrete；High-elastic modulus fibre obtained
Seif-citing rate regeneration concrete will be completed to pour in 30 minutes.If it exceeds 30 minutes, initial set has occurred in regeneration concrete, then should
Concrete cannot be reused because of intensity decline.
In above-mentioned steps 1, the miberal powder is granulated blast-furnace miberal powder micro mist, and product hierarchy is S95 grades.In above-mentioned steps 1, institute
It is 17900m that state silicon ash, which be specific surface area,2The level-one SILICA FUME of/kg.In above-mentioned steps 1, the rubber is broken by waste tire of automobile
Broken to form, partial size is 1~2mm, apparent density 1225kg/m3, bulk density 617kg/m3.In above-mentioned steps 3, fine aggregate
The sand in, fineness modulus are 2~3.In above-mentioned steps 4, coarse aggregate is formed using natural aggregate and regenerated coarse aggregate, and regeneration is thick
Aggregate is discarded concrete test block through obtained by artificial, hammer crushing crusher machine.Coarse aggregate size is 5~25mm, wherein regenerating
Coarse aggregate substitution rate is 30%~100%.
The fiber seif-citing rate regenerated aggregate concrete made using this manufacture craft flows the slump >=550mm,
Self-stress value >=3MPa.According to national standard " standard for test methods of mechanical properties of ordinary concrete " (GB/T 50081-2016)
The cubic compressive strength of concrete is tested, result 43.9MPa.
[embodiment 3]
1. by 750 parts of aluminium sulfate self-stressing cements, 47.1 parts of end crotch type steel fibers, 2.16 parts of miberal powders, 3.32 portions of rubbers
Glue particle, 2.22 parts of silicon ashes, 0.9 part high efficiency water reducing agent mix 2~8 minutes, until uniform；
2. 225.9 parts of mixing waters will be added in the mixture of step 1 in 15 minutes, stir 1.5~3 minutes, production
Cement slurry out；
3. 675.8 parts of fine aggregates and mix 1.5~3 minutes will be added in the cement slurry of step 2 in 15 minutes, until
Uniformly, cement mortar slurry is produced；
4. 378 parts of natural coarse aggregates, 378 parts of thick bones of regeneration will be added in the cement mortar slurry of step 3 in 15 minutes
Expect simultaneously mix 1.5~3 minutes, until it is uniform, produce fiber seif-citing rate regenerated aggregate concrete；High-elastic modulus fibre obtained is answered certainly
Power regeneration concrete will be completed to pour in 30 minutes.If it exceeds 30 minutes, initial set has occurred in regeneration concrete, then the coagulation
Soil cannot be reused because of intensity decline.
In above-mentioned steps 1, the miberal powder is granulated blast-furnace miberal powder micro mist, and product hierarchy is S95 grades.In above-mentioned steps 1, institute
It is 17900m that state silicon ash, which be specific surface area,2The level-one SILICA FUME of/kg.In above-mentioned steps 1, the rubber is broken by waste tire of automobile
Broken to form, partial size is 1~2mm, apparent density 1225kg/m3, bulk density 617kg/m3.In above-mentioned steps 3, fine aggregate
The sand in, fineness modulus are 2~3.In above-mentioned steps 4, coarse aggregate is formed using natural aggregate and regenerated coarse aggregate, and regeneration is thick
Aggregate is discarded concrete test block through obtained by artificial, hammer crushing crusher machine.Coarse aggregate size is 5~25mm, wherein regenerating
Coarse aggregate substitution rate is 30%~100%.
The fiber seif-citing rate regenerated aggregate concrete made using this manufacture craft flows the slump >=550mm,
Self-stress value >=3MPa.According to national standard " standard for test methods of mechanical properties of ordinary concrete " (GB/T 50081-2016)
The cubic compressive strength of concrete is tested, result 63.3MPa.
[embodiment 4]
1. by 750 parts of aluminium sulfate self-stressing cements, 94.2 parts of end crotch type steel fibers, 1.08 parts of miberal powders, 4.02 portions of rubbers
Glue particle, 2.22 parts of silicon ashes, 1.5 parts high efficiency water reducing agent mix 2~8 minutes, until uniform；
2. 225.9 parts of mixing waters will be added in the mixture of step 1 in 15 minutes, stir 1.5~3 minutes, production
Cement slurry out；
3. 675.8 parts of fine aggregates and mix 1.5~3 minutes will be added in the cement slurry of step 2 in 15 minutes, until
Uniformly, cement mortar slurry is produced；
4. 378 parts of natural coarse aggregates, 378 parts of thick bones of regeneration will be added in the cement mortar slurry of step 3 in 15 minutes
Expect simultaneously mix 1.5~3 minutes, until it is uniform, produce fiber seif-citing rate regenerated aggregate concrete；High-elastic modulus fibre obtained is answered certainly
Power regeneration concrete will be completed to pour in 30 minutes.If it exceeds 30 minutes, initial set has occurred in regeneration concrete, then the coagulation
Soil cannot be reused because of intensity decline.
In above-mentioned steps 1, the miberal powder is granulated blast-furnace miberal powder micro mist, and product hierarchy is S95 grades.In above-mentioned steps 1, institute
It is 17900m that state silicon ash, which be specific surface area,2The level-one SILICA FUME of/kg.In above-mentioned steps 1, the rubber is broken by waste tire of automobile
Broken to form, partial size is 1~2mm, apparent density 1225kg/m3, bulk density 617kg/m3.In above-mentioned steps 3, fine aggregate
The sand in, fineness modulus are 2~3.In above-mentioned steps 4, coarse aggregate is formed using natural aggregate and regenerated coarse aggregate, and regeneration is thick
Aggregate is discarded concrete test block through obtained by artificial, hammer crushing crusher machine.Coarse aggregate size is 5~25mm, wherein regenerating
Coarse aggregate substitution rate is 30%~100%.
The fiber seif-citing rate regenerated aggregate concrete made using this manufacture craft flows the slump >=550mm,
Self-stress value >=3MPa.According to national standard " standard for test methods of mechanical properties of ordinary concrete " (GB/T 50081-2016)
The cubic compressive strength of concrete is tested, result 64.2MPa.
The invention has the advantages that high-elastic modulus fibre seif-citing rate regenerated aggregate concrete has given full play to the enhancing of fiber
Effect, effectively improves the elasticity modulus and toughness of regeneration concrete, reduces the creep and shrinkage of regeneration concrete, enhance
The moulding of regeneration concrete, compared with traditional regeneration concrete structure, Compressive Bearing Capacity, anti-bending bearing capacity, endurance,
The mechanical properties such as abrasion performance, toughness are greatly improved.Miberal powder and silicon ash be filled into the gap between aggregate formed it is fine and close and
Firm gel heap polymers, improves the intensity and compactness of concrete, to form the good coagulation of high-strength, wear-resisting impermeability
Soil.Rubber grain improves the internal structure of concrete by physical action, improves the ductility of concrete, improves regeneration concrete
Anti-Chloride Ion Penetration and frost resistance, durability strengthened.The present invention obtains the mechanical property of regenerated aggregate concrete
To abundant application, not only solves building castoff and ecology is broken in the pollution problem of environment and exploitation natural sand stone aggregate
It is bad, also widen the application approach of regeneration concrete.It is contemplated that this novel compositions for meeting National Sustainable Development Strategies
Structure centainly has wide application market and prospect.
Claims (6)
1. a kind of manufacture craft of high-elastic modulus fibre seif-citing rate regeneration concrete, which comprises the following steps:
Step 1, cement, high-elastic modulus fibre, miberal powder, silicon ash, rubber grain, high efficiency water reducing agent mix is uniform；
Step 2, concrete mixing water will be added in the mixture of step 1, cement slurry is produced in stirring；
Step 3, fine aggregate will be added in the cement slurry of step 2 and mix is uniform, produce cement mortar slurry；
Step 4, the coarse aggregate being made of natural coarse aggregate and regenerated coarse aggregate will be added in the cement mortar slurry of step 3 and mix
It closes uniformly, produces high-elastic modulus fibre seif-citing rate regeneration concrete；
The high-elastic modulus fibre is steel fibre, carbon fiber, basalt fibre or glass fibre.
2. a kind of manufacture craft of above-mentioned high-elastic modulus fibre seif-citing rate regeneration concrete, which is characterized in that the regeneration coagulation
The parts by weight that soil prepares feed components are as follows:
240~1200 parts of regenerated coarse aggregate；
0~840 part of natural coarse aggregate；
Natural 500~800 parts of fine aggregate；
650~850 parts of cement；
0~15 part of high efficiency water reducing agent；
150~280 parts of mixing water；
0~156 part of high-elastic modulus fibre；
0~180 part of miberal powder；
0~60 part of silicon ash；
0~46 part of rubber grain.
3. a kind of manufacture craft of high-elastic modulus fibre seif-citing rate regeneration concrete according to claim 1, which is characterized in that
In the step 1, cement uses silicate self-stressing cement, aluminium sulfate self-stressing cement or aluminate self-stressing cement.
4. a kind of manufacture craft of high-elastic modulus fibre seif-citing rate regeneration concrete according to claim 1, which is characterized in that
In the step 1, miberal powder is granulated blast-furnace miberal powder micro mist, and product hierarchy is S95 grades.
5. a kind of manufacture craft of high-elastic modulus fibre seif-citing rate regeneration concrete according to claim 1, which is characterized in that
In the step 1, silicon ash is that specific surface area is 17900m2The level-one SILICA FUME of/kg.
6. a kind of manufacture craft of high-elastic modulus fibre seif-citing rate regeneration concrete according to claim 1, which is characterized in that
In the step 1, rubber is formed by waste tire of automobile is broken, and partial size is 1~2mm, apparent density 1225kg/m3, accumulation
Density is 617kg/m3。
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| CN116332589A (en) * | 2023-02-06 | 2023-06-27 | 中铁十五局集团有限公司 | Environment-friendly low-temperature-resistant anti-cracking concrete and preparation method thereof |
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| CN115521110A (en) * | 2022-09-29 | 2022-12-27 | 武汉工程大学 | Light rubber mineral powder recycled concrete and preparation method thereof |
| CN115557736A (en) * | 2022-10-17 | 2023-01-03 | 河北雄安昝岗混凝土有限公司 | Recycled concrete with improved impermeability and preparation method thereof |
| CN116332589A (en) * | 2023-02-06 | 2023-06-27 | 中铁十五局集团有限公司 | Environment-friendly low-temperature-resistant anti-cracking concrete and preparation method thereof |
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