CN106061918B - Use chilling steel reducing slag powder as the road repair of jointing material rapid-hardening concrete composition and the method for using rapid-hardening concrete composition repairing road - Google Patents
Use chilling steel reducing slag powder as the road repair of jointing material rapid-hardening concrete composition and the method for using rapid-hardening concrete composition repairing road Download PDFInfo
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- CN106061918B CN106061918B CN201480076428.2A CN201480076428A CN106061918B CN 106061918 B CN106061918 B CN 106061918B CN 201480076428 A CN201480076428 A CN 201480076428A CN 106061918 B CN106061918 B CN 106061918B
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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
- C04B28/08—Slag cements
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
- E01C23/06—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/10—Coherent pavings made in situ made of road-metal and binders of road-metal and cement or like binders
- E01C7/14—Concrete paving
- E01C7/147—Repairing concrete pavings, e.g. joining cracked road sections by dowels, applying a new concrete covering
-
- 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
- C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Structural Engineering (AREA)
- Ceramic Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Mining & Mineral Resources (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Road Paving Structures (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The present invention relates to a kind of road repair rapid-hardening concrete composition and and using the rapid-hardening concrete composition be laid with and mending concrete road surface method, the rapid-hardening concrete composition is characterized in that, chilling steel reducing slag powder is used to replace cement class jointing material as jointing material, the chilling steel reducing slag powder includes the chilling steel reducing slag powder of 10 weight of weight %~20 %, the fine aggregate of 35 weight of weight %~45 %, the coarse aggregate of 30 weight of weight %~40 %, the mixing water of the latex of 1 weight of weight %~3 % and 4 weight of weight %~6 %.By using industrial by-products chilling steel reducing slag powder, it can replace quick setting cement class jointing material, to reduce the carbon emission amount and environmental disruption in manufacture of cement, and cost effectiveness can be improved.In addition, the rapid-hardening concrete shows the compressive strength of 21MPa or more in 4 hours after deposit, so that its curing time be made to minimize, and excellent freeze-thaw resistance and waterproof performance are provided, then has the effect of extending the concrete road surface service life.
Description
Technical field
The present invention relates to a kind of road repair quick-hardenings for using chilling steel reducing slag powder as jointing material
Concrete composition and the method for repairing road using the rapid-hardening concrete composition, more specifically, the present invention relates to
And chilling steel reducing slag powder is used as the road repair of jointing material rapid-hardening concrete composition and uses institute
The method for stating rapid-hardening concrete composition repairing road, the rapid-hardening concrete composition use pass through following manner
Substitute of the chilling steel reducing slag powder obtained as supper-fast hardened cement: by high-voltage high-speed gas injection to bonding
Agent, i.e., the melting and reducing arc furnace slag of the by-product generated in the ironmaking processes of steel mill, and it is made to disperse, then chilling is simultaneously
It crushes.
Background technique
In general, environmental loads caused by concrete road surface traffic load due to caused by motor vehicle and climate change and deteriorate
At various forms and it is damaged.Such aging concrete plate road surface should carry out basic reparation and reinforcement, then, carry out very difficult
Operation, such as barring traffic or detours.Therefore, it by bridge floor laying design and should construct long-term public to have it in construction
Property.
Recently, the rehabilitation expense rapid growth on such aging concrete plate road surface.Furthermore it is contemplated that aging concrete plate road surface is existing
With can quickly increase later.Accordingly, it is considered to which South Korea is mixed for aging to the quantity of the aging concrete plate quicklyd increase in the future
Solidifying soil surface should forwardly prepare basis repairing and reinforcement measure.
Further, since environment caused by manufacture of cement, which breaks ring, is proposed that Korean government implements as serious social concern
Low-carbon and Green Development policy.Therefore, ecological friendly high value material is being applied to current concrete patching
When material, this can become the substitute innovated very much.In order to realize this purpose, exploitation is needed to be replaced with industrial by-products in a hurry
For the contributive next-generation concrete technology of low-carbon green development of cement and ecology close friend.
According to this demand, is developed in Korean Patent 10-1234787 recently and use clinker powder as ecological close friend
High value material concrete patching material.This patent document discloses the supper-fast hardening comprising reducing slag powder
Hydraulic binder material, wherein the reducing slag powder is by being crushed to 3,000cm for Beads2/ g~12,000cm2/g
Fineness of powder and be made, the Beads by following manner be made: make the by-product generated in the ironmaking processes of steel mill
While the melting and reducing arc furnace slag of object is fallen through tundish, clinker is set to disperse to air and spraying pressure-air to it
In, and the clinker is chilled to 600 DEG C hereinafter, making that free lime is wherein not present.
In addition, the Korean Patent 10-1243975 hydraulic binder material disclosed using chilling steel reducing slag powder
Composition, wherein the chilling steel reducing slag powder include chilling steel reducing slag powder (RC-LFS powder), retarder and
Gypsum, the chilling steel reducing slag powder pass through the melting and reducing electric arc of the by-product generated in the ironmaking processes to steel mill
Clinker injection high-voltage high-speed gas simultaneously makes it disperse and chilling and is crushed, the retarder be used for the chilling steel also
Delayed coagulation when former ground-slag end is reacted with water, the gypsum when the chilling steel reducing slag powder is reacted with water for delaying
Solidification and improvement initial strength and long-term strength.The chilling steel reducing slag powder is high by spraying high pressure to melting and reducing slag
Fast gas 5 seconds~10 seconds simultaneously makes it disperse, 1,300 DEG C~1,400 DEG C of temperature of melting and reducing slag is thus chilled to 400 DEG C
Then~600 DEG C crush and have 3,000cm2The fineness of powder of/g or more.Gypsum is selected from anhydrous gypsum, semi-hydrated gypsum or two
At least one of water gypsum, retarder are selected from least one of citric acid powder or tartaric acid powder.Herein, chilling system
Steel reducing slag powder: the weight ratio of gypsum is 60:40~90:10, the chilling steel reducing slag powder: the weight ratio of retarder
For 100:0.1~100:2.
Although reducing slag powder of the hydraulic binder materials'use disclosed in these patent documents as industrial by-products
And show supper-fast hardening or hydraulicity characteristic, but they do not show and are being actually used in road pavement or road repair
When required such as durability, compressive strength, bending strength, adhesive strength, freeze-thaw resistance and waterproof performance property.Therefore,
The present inventor develops quick-hardening as cement class quick-hardening jointing material by using chilling steel reducing slag powder
High durability concrete composition, so as to complete the present invention.
Summary of the invention
Technical problem
Therefore, it is made that the present invention in view of the above problems, it is an object of the present invention to provide road repairs with quickly
Maturing composition uses industrial by-products chilling steel reducing slag powder to replace cement class quick as jointing material
Harden jointing material.
It is described quick it is a further object of the present invention to provide the method for using rapid-hardening concrete composition repairing road
Maturing composition uses chilling steel reducing slag powder as jointing material, thus by due to using the chilling system
Steel reducing slag powder greatly shortens curing time and is achieved in construction rapidly and makes the expense of the obstruction and user to user most
Smallization, and road ability is improved by the structure and function of road improvement and durability extends the service life of road.
Technical solution
According to another aspect of the present invention, a kind of road repair rapid-hardening concrete composition is provided, it includes
Chilling steel reducing slag powder, fine aggregate, coarse aggregate, latex and mixing water, wherein use the chilling steel reducing slag powder
Cement class quick-hardening jointing material is replaced as jointing material.
Rapid-hardening concrete composition may include the chilling steel reducing slag powder of 10 weight of weight %~20 %, 35
The fine aggregate of the weight of weight %~45 %, the coarse aggregate of 30 weight of weight %~40 %, 1 weight of weight %~3 % latex and 4
The mixing water of the weight of weight %~6 %.
Rapid-hardening concrete composition can show the compressive strength of 21MPa or more for 4 hours after deposit.
According to another aspect of the present invention, a kind of side using rapid-hardening concrete composition repairing road is provided
Method, the rapid-hardening concrete composition use chilling steel reducing slag powder as jointing material, which comprises cut
The step of cutting road surface；The step of smooth road surface through cutting；The step of cleaning and drying flattened road surface；Preparation includes chilling
Steel reducing slag powder processed, fine aggregate, coarse aggregate, latex and mixing water road repair rapid-hardening concrete composition and spread
The step of putting the rapid-hardening concrete composition；And the step of solidifying the rapid-hardening concrete composition.
The method may include: the step of cutting road surface；The step of smooth road surface through cutting；Cleaning and dry warp are flat
The step of whole road surface；Preparation includes chilling steel reducing slag powder, 35 weights of weight %~45 of 10 weight of weight %~20 %
Measure the latex and 4 weights of weight %~6 of the fine aggregate of %, the coarse aggregate of 30 weight of weight %~40 %, 1 weight of weight %~3 %
Measure road repair rapid-hardening concrete composition described in rapid-hardening concrete composition and laying of the mixing water of %
Step；And the step of solidifying the rapid-hardening concrete composition.
Advantageous effects
Road repair of the invention restores ground-slag using industrial by-products chilling steel with rapid-hardening concrete composition
End replaces cement class quick-hardening jointing material as quick-hardening jointing material, thus by reducing in cement production process
Carbon emission amount and reduce environmental disruption and improve economic feasibility.
In addition, chilling steel reducing slag powder is used to be combined as the road repair of jointing material with rapid-hardening concrete
Object shows the compressive strength of 21MPa or more after deposit in 4 hours, and has excellent freeze-thaw resistance and waterproof performance, from
And extend the service life of concrete road surface.
Detailed description of the invention
Fig. 1 depicts chilling steel reducing slag aggregate of the invention.
Fig. 2 depicts the image of chilling reducing slag fine powder of the invention.
Fig. 3 depicts the air quenching process of steel reducing slag processed of the invention.
Fig. 4 depicts the composition of the oxide of chilling reducing slag of the invention.
Fig. 5 depicts the mineral composition comparison result of reducing slag of the invention after slow cooling and chilling.
Fig. 6 depicts the coagulating property of chilling reducing slag fine powder relevant to the dosage of retarder.
Fig. 7 depicts the compressive strength characteristic of chilling reducing slag fine powder of the invention.
Specific embodiment
Road repair rapid-hardening concrete composition of the invention is characterized in that restoring ground-slag comprising chilling steel
End, fine aggregate, coarse aggregate, latex and mixing water, wherein the chilling steel reducing slag powder is used to replace as jointing material
Cement class quick-hardening jointing material.
Rapid-hardening concrete composition is characterized in that the chilling steel reducing slag comprising 10 weight of weight %~20 %
Powder, the fine aggregate of 35 weight of weight %~45 %, the coarse aggregate of 30 weight of weight %~40 %, 1 weight of weight %~3 %
The mixing water of latex and 4 weight of weight %~6 %.
In addition, rapid-hardening concrete composition is characterized in that the compression of 4 hours display 21MPa or more after deposit is strong
Degree.
In addition, the present invention is characterized in that the method that offer repairs road using rapid-hardening concrete composition, described
Rapid-hardening concrete composition uses chilling steel reducing slag powder as jointing material, the method comprise the steps that cutting
The step of road surface；The step of smooth road surface through cutting；The step of cleaning and drying flattened road surface；Preparation includes chilling system
Road repair rapid-hardening concrete composition and the laying of steel reducing slag powder, fine aggregate, coarse aggregate, latex and mixing water
The step of rapid-hardening concrete composition；And the step of solidifying the rapid-hardening concrete composition.
Moreover, the method is characterized in that including: the step of cutting road surface；The step of smooth road surface through cutting；Clearly
The step of clean and dry flattened road surface；Chilling steel reducing slag powder of the preparation comprising 10 weight of weight %~20 %, 35
The fine aggregate of the weight of weight %~45 %, the coarse aggregate of 30 weight of weight %~40 %, 1 weight of weight %~3 % latex and 4
The road repair of the mixing water of the weight of weight %~6 % quick-hardening coagulation described in rapid-hardening concrete composition and laying
The step of native composition；And the step of solidifying the rapid-hardening concrete composition.
It hereinafter, is that the present invention is described in more detail in those of ordinary skill in the art referring to following embodiment and attached drawing,
To be easy to implement the present invention.As the skilled person will recognize, the embodiment can be in a variety of different ways
It modifies and is not departing from the spirit or scope of the present invention.
Firstly, chilling steel reducing slag powder of the invention is prepared in the following manner: by high pressure height as shown in Fig. 1~7
Fast gas injection to the by-product generated in the ironmaking processes of steel mill melting and reducing arc furnace slag 5 seconds~60 seconds and make it
It disperses, so that the melting and reducing slag that temperature is 1,300 DEG C~1,600 DEG C is chilled to 40 DEG C~90 DEG C, then crushes clinker
To 3,000cm2/ g~8,000cm2The fineness of powder of/g.The oxide of obtained chilling steel reducing slag powder is by 40 matter
Measure the CaO of the mass of %~60 %, the SiO of 5 mass of mass %~20 %2With the Al of 10 mass of mass %~30 %2O3It constitutes.It should
Oxide also contains C12A7(it has quick coagulating property after chilling) and mineral β-C2(it shows stable long-term strong S
Degree).It therefore meets initial quick-hardening characteristic and long-term strength.In addition, to oxide addition for reducing the stone shunk
Cream, the retarder for ensuring workability and the water-reducing agent for ensuring workability, and selectively addition is for assigning material point
Thickener from resistance.Therefore, the initial strength performance capabilities for improving concrete, then substantially reduces curing time.This
Outside, durability can be improved, and the carbon emission amount in cement production process can be reduced.Therefore, also by the chilling steel
Former ground-slag end is used as jointing material.
When the dosage of chilling steel reducing slag powder is less than 10 weight %, ensuring intensity due to lacking jointing material
There are problems with finishing (finish) concrete surface aspect.On the other hand, when the dosage of chilling steel reducing slag powder is greater than
When 20 weight %, due to excess powder, there are problems in terms of the construction operation for ensuring concrete.Therefore, 100 weights are based on
The concrete composition of % is measured, the content of chilling steel reducing slag powder is preferably 10 weight of weight %~20 %.
As fine aggregate, it is preferable to use cleaning firm natural sand or artificial sand.When the dosage of fine aggregate is less than 35 weights
When measuring %, there are problems in terms of modifying concrete surface.On the other hand, it when the dosage of fine aggregate is greater than 45 weight %, deposits
The problem of completing construction and material may possibly be separated.Therefore, the composition of the invention based on 100 weight %, fine aggregate
Dosage is 35 weight of weight %~45 %.
In addition, as coarse aggregate, it is preferable to use cleaning firm rubble or grit.Since the size when the coarse aggregate is big
When the 1/2 of laying depth the watertightness of concrete and in terms of modifying concrete surface there are problem, thus the aggregate
Preferably have a maximum 1/2 or less laying depth.
When the content of coarse aggregate is less than 30 weight %, there are problems in terms of ensuring construction operation and intensity.It is another
Aspect, when the content of coarse aggregate is greater than 40 weight %, there are problems in terms of modifying concrete surface.Therefore, 100 weights are based on
The composition of the invention of % is measured, the content of coarse aggregate is preferably 30 weight of weight %~40 %.
Latex is preferably SBR styrene butadiene rubbers (SBR) class latex, and is used to improve the property of composition of the invention
Matter, such as waterproof performance, adhesiveness, durability, bending strength, tensile strength and mobility.When the dosage of latex is less than 1 weight %
When, there are problems in terms of ensuring mobility and waterproof performance.On the other hand, when the dosage of latex is greater than 3 weight %, material
It may possibly be separated.Therefore, the composition of the invention based on 100 weight %, the dosage of the latex are preferably 1 weight of weight %~3
Measure %.
As mixing water, oil, acid, organic impurities, muddy water may be available, containing negatively affecting concrete or steel
Harmful substance water or seawater.Therefore, mixing water is preferably distilled water.When the dosage of mixing water is less than 4 weight %,
Ensure that there are problems in terms of the construction operation of concrete.On the other hand, when the dosage of mixing water is greater than 6 weight %, true
Protecting intensity aspect, there are problems.Therefore, the composition of the invention based on 100 weight %, the dosage of mixing water are preferably 4 weights
Measure the weight of %~6 %.
It hereinafter, will the present invention is described in detail referring to following embodiment and comparative example.But, following embodiment
It is not to provide with comparative example to limit the scope of the invention, those skilled in the art will appreciate that various modifications can be carried out,
Increase and replace, without departing from scope and spirit of the present invention.
[embodiment 1]
Chilling steel reducing slag powder is used to prepare road repair rapid-hardening concrete composition as jointing material
Of the invention uses chilling steel reducing slag powder as the road repair rapid-hardening concrete of jointing material
Composition forms preparation according to " preparation method of laboratory concrete sample " of KS F 2425 with what is summarized in table 1.
[table 1]
[embodiment 2]
The quality measurement of chilling steel reducing slag powder as jointing material
According to experimental method measurement fineness of powder, stability, setting time and the compressive strength summarized in the following table 2.As a result
It is summarised in table 3.
As shown in table 3, since each value of fineness of powder, stability, setting time and compressive strength is marked shown in the following table 2
In quasi- value, therefore the road repair rapid-hardening concrete composition meets the quality standard of jointing material.In particular, can
With confirmation, use the chilling steel reducing slag powder as the road repair of jointing material rapid-hardening concrete composition
Show the compressive strength of 25MPa or more in 4 hours (after i.e. 3 hours) after deposit.
[table 2]
[table 3]
[embodiment 3]
Use chilling steel reducing slag powder as the road repair of jointing material rapid-hardening concrete composition
The development test of architectural characteristic
Compressive strength
The compressive strength of the sample of method preparation according to the embodiment is measured according to KS F 2405.Specifically, by sample
It is placed as matching central shaft with the center of platen.Then, the platen of testing machine is attached directly to the end face of the sample,
And load is added to sample so as to not be hit to sample with constant speed.It is strong in point in time measurement compressions in 4 hours and 28 days
Degree.As a result it summarizes in table 4.
Bending strength
The bending strength of the sample of method preparation according to the embodiment is measured according to KS F 2408.Specifically, will
Sample is filled in concrete mold.Two sides of the mold are placed with up and down direction, and mold is placed on support
At the center of NAVI.The additonal pressure device on the 1/3 of span position, then in the center line and distance of tensile surface span
Sample is destroyed between the position of center line 1/3.In 4 hours and 28 days point in time measurement bending strengths.As a result it is summarised in down
In table 4.
Adhesive strength
The adhesive strength of the sample of method preparation according to the embodiment is measured according to KS F 2762.Specifically,
Then slowly applied force under orthogonal with sample surface is coated with core surface with epoxyn, to adhering to cushion block thereon.
Adhesive strength testing machine is orthogonally fixed on cushion block, then vertically applies tension to core, until sample destroys.4
The point in time measurement adhesive strength of hour and 28 days.As a result it summarizes in table 4.
[embodiment 4]
Use chilling steel reducing slag powder as the road repair of jointing material rapid-hardening concrete composition
Fitness test
Elasticity modulus
The upper and lower surface of sample prepared by method according to the embodiment is polished by sanding machine.Elasticity modulus passes through
Length is the strain gauge of 60mm according to KS F 2438 " static modulus of elasticity of concrete cylindrical sample and the test side of Poisson's ratio
Method " measures.As a result it summarizes in table 4.
Drying shrinkage
The tensile strain rate of the sample of method according to the embodiment preparation according to KS F 2424 " mortar and concrete
The test method of length variation ", is calculated while keeping 20 DEG C of environment temperature and 60% humidity by amesdial.As a result
It summarizes in table 4.
Thermal expansion coefficient
The relevant length variation of the temperature of the sample of method preparation according to the embodiment is passed through according to AASHTO TP60-00
LVDT is measured using dilatometer, and the dilatometer strains very small Invar bracket caused by temperature change and is made.As a result total
Knot is in table 4.
[embodiment 5]
Use chilling steel reducing slag powder as the road repair of jointing material rapid-hardening concrete composition
Durability test
Salt-freezing resistance
Salt-freezing resistance is tested according to ASTM C 672.Repeat then to exist within ± 1.7 DEG C of freezings 16~18 hours at -17 DEG C
23 DEG C ± 2 DEG C and 45~55% relative humidity melt 6~8 hours amount to 50 circulation.Provide that every 5 circulations are seen according to ASTM
Examine surface peeling degree.As a result it summarizes in table 4.
Freeze-thaw resistance
Freeze-thaw resistance according to KS F 2456 (concrete is relative to the method A in the test method of the resistance of fast freeze-thaw:
Underwater fast freeze-thaw test method) it measures.The time of each circulation is 4 hours, and every 30 circulations measure relative dynamic bullet
Property modulus.As a result it summarizes in table 4.
Crack resistance
Circle ring test is carried out according to AASHTO PP34-98.Specifically, concrete is deposited on the sky between two rings
Between, after 1 hour, it is taken out outer mold.In order to evaporate the water to external annular surface, by the upper and lower surface silicon of concrete sample
Ketone sealing.Then, the development of cracking is observed in the steady temperature humidity room that relative humidity is 45% and temperature is 23 DEG C
With growth 56 days.As a result it summarizes in table 4.
Anti-chlorine ion permeability
Anti-chlorine ion permeability is measured according to KS F 2711.Specifically, the thickness that 50mm will be cut into the middle part of sample
Degree.In order to remove the air for being trapped in sample interior, sample is inserted into drier, makes vacuum pump operation 3 hours.Then, in order to again
It is secondary to mix the sample with water saturation, water is put into drier, makes pump operation 1 hour.Then, the operation for stopping pump, by sample in the sample
It is kept for 18 ± 1 hours in the state that this is fully saturated under water.After the preparation for completing permeability test sample, by sample
Its permeability is tested fixed to A.V. battery.(+) electrode 0.3NNaOH solution is filled, (-) electrode is molten with 3%NaCl
Liquid filling.Then, the direct current for applying 60V to sample, in 7 days and 56 days 6 hours current values of point in time measurement.As a result it summarizes
In the following table 4.
[table 4]
As shown in table 4, it has been confirmed that of the invention use chilling steel reducing slag powder to repair as the road of jointing material
Architectural characteristic, adaptability and the durability of benefit rapid-hardening concrete composition meet standard value.
Hereinafter, chilling steel reducing slag powder is used as the quick hard of jointing material by the use that the present invention will be described in detail
Change the method for concrete composition repairing road.
The cutting of traditional road concrete and smooth
During the cutting process, in order to ensure suitable curing time and the traffic barring time is minimized, should used
The cutting apparatus of the undamaged portion of cutting road concrete in short time.Pass through cutting apparatus (pavement milling machine and water jet
(waterjet)) top of impaired road concrete is completely removed until depth specified in design document.Pass through cutting
Equipment is difficult to the part removed and is cut off using hand-held crusher.
Pavement milling machine should can cut concrete surface until its limit depth, and should can collect or
Foreign matter, the dust etc. that the operation of handling machine generates.
Water jet is for removing the damaged concrete under reinforcing bar, without damaging reinforcing bar or normal concrete.Using spray
When hydrophone, should install breakage-proof net makes cutting object not disperse.
When using pavement milling machine, upper reinforcement exposes or loosens, and should stop cutting immediately, and cutting should pass through spray
Hydrophone carries out.
The concrete surface of deterioration can should be equably cut to institute by concrete cut equipment (room temperature cutting apparatus)
It needs depth and collects or handle foreign matter, the dust etc. generated due to the operation of the equipment.In addition, concrete cut equipment should be
In terms of operating efficiency and environment effectively.
Surfacing equipment should can remove fragile concrete fragment, including since room temperature cutting apparatus carries out cutting production
Damaged concrete fragment in raw surface portion.
The removal of cracking portion and the cleaning of bridge floor and drying
Gathered using the cutting waste that pavement milling machine and water jet generate by sliding loader and is loaded into self-unloading card
Then vehicle is abandoned in specified offal treatment field.The foreign matter and moisture for not removed sliding loader by vacuum vehicle are inhaled
Draw and takes away.
Vacuum vehicle for aspirating and cleaning water used in the fine material and water jet that water jet crushes should have
There is the suction that can take the foreign matter under reinforcing bar away.The useful load of vacuum vehicle should be 6m3More than, and vacuum vehicle should match
Have suction hose.
Because the surface state after cutting greatly influences the attachment of repairing and consolidation effect and new-old concrete, answer
It whether there is waterproof layer after research cleaning on cutting surface and whether there are still the unsatisfied of damaged concrete part
Part.When observing this problem, should directly solve.
The vacuum pumping device of fine material and dust foreign matter that suction and cleaning such as cutting apparatus crush should have pumping
Walk the suction for the foreign matter that cutting is deep under reinforcing bar.The useful load of the vacuum pumping device should be 6m3More than, and vacuum is taken out
Suction hose should be equipped with by inhaling equipment.
Use chilling steel reducing slag powder as the road repair of jointing material rapid-hardening concrete composition
Manufacture and laying
Of the invention uses chilling steel reducing slag powder as the road repair rapid-hardening concrete of jointing material
Composition should manufacture before completing cleaning process used as the travelling mixer of mobile dosing device, mobile stirring
Machine should be mounted with a variety of materials and wait at the scene.In order to mixed without cement in the laying friendly low-carbon of quick-hardening ecology of the invention
Improve the defect for adhering to and removing the interface between new-old concrete when solidifying soil composition, lower concrete is maintained at hygrometric state.
The travelling mixer for quantitatively mixing a variety of materials should be used to control combined amount and have with continuous production equipped with valve
There is the concrete of uniform quality.In addition, a variety of materials storage tank and accurate measurement measurement should be basically comprised in blender
Device.
Simultaneously by coarse aggregate, chilling steel reducing slag powder, fine aggregate, latex and mixing water sequence investment travelling mixer
Ensure more than the time being mixed for required workability with realizing.The ingredient and glue for the composition of the invention being discharged from blender
Slurry viscosity should be equably maintained until terminate laying.In addition, the amount of the composition should be enough continuous laying concrete.
In order to improve the attachment of composition of the invention and remove the defect at interface between new-old concrete, before laying i.e.
It carves and carries out surface sweeping operation, wherein conventional underrun brush or suitable tool are subjected to scumbling with a small amount of mortar.
Laying should carry out before the dry tack free for carrying out surface sweeping operation.Laying thickness should be at least 30mm or more, need
It to be modified by vibrating compacting.
Finishing and solidification
It should be modified by concrete roll-type paving machine to meet required compactness, flatness etc..It cannot use
In the case where concrete roll-type paving machine, stone is modified using screed.In the present invention, (tinning) is arranged to repair
Whole rough surface.It is arranged with the depth at the interval of 30mm and 2~3mm.
After modifying stone, solidification is carried out in the following manner until traffic is open: to concrete ejection film hardening agent
To be become negatively affected because of drying, temperature change, load, impact etc..
After modifying stone, the mouldability on surface should be arranged immediately when keeping.As an alternative, after hardening, into
Row grooving is with enough coefficient of frictions.
As film hardening agent, oils product should be used.Film hardening agent should equably be injected in the whole surface of laying
On.That is, in all cases, curing agent should be coated on all parts.
Since trimming device and collator should make the concrete of laying ensure and maintain Paved surfaces, so trimming device
Should have the width and height control function of the flatness for ensuring concrete road surface.Collator should can ensure concrete road
Interval needed for face and depth.
Solidification by after laying concrete air dry cure 3 hours carry out.But, when environment temperature is 5 DEG C or less,
Curing time can further be extended.In the curing process, it should sufficiently carry out bad for such as temperature change, load and impact
The protection of influence.
Above description is provided and is used merely to explain technical concept of the invention.It would be recognized by those skilled in the art that can be into
Row various modifications, addition and replacement, without departing from scope and spirit of the present invention.Therefore, although by limited embodiment and
The present invention is described for attached drawing, but technical concept of the invention should not necessarily be limited by these embodiment and attached drawing.Model of the invention
It encloses and is not limited by a specific embodiment of the invention instead of, is defined by the appended claims, within this range all
Difference should be interpreted that within the scope of the present invention.
Claims (1)
1. chilling steel reducing slag powder is used as jointing material by a kind of road repair rapid-hardening concrete composition,
Wherein, the rapid-hardening concrete composition include 10 weight of weight %~20 % the chilling steel reducing slag powder,
The fine aggregate of 35 weight of weight %~45 %, 30 weight of weight %~40 % full-size be concrete laying depth 1/2
Coarse aggregate, the 1 SBR styrene butadiene rubbers class latex of the weight of weight %~3 % and mixing for 4 weight of weight %~6 % below
Heshui, and added with for reducing the gypsum, the retarder for ensuring workability and the diminishing for ensuring workability that shrink
Agent, and the thickener for assigning material separation resistance,
The chilling steel reducing slag powder is made in the following manner: the by-product generated into the ironmaking processes of iron-smelter
Melting and reducing arc furnace slag sprays high-speed gas 5 seconds~60 seconds and it is made to disperse, to be 1,300 DEG C~1,600 DEG C by temperature
The melting and reducing slag be chilled to 40 DEG C~90 DEG C, and chilling ground-slag is broken to 3,000cm2/ g~8,000cm2The powder of/g
Last fineness, wherein the oxide of the chilling steel reducing slag powder by 40 mass of mass %~60 % CaO, 5 mass %~
The SiO of 20 mass %2With the Al of 10 mass of mass %~30 %2O3It constitutes, wherein the rapid-hardening concrete composition exists
The compressive strength of 21MPa or more is shown within 4 hours after deposition.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020140024367A KR101460632B1 (en) | 2014-02-28 | 2014-02-28 | Rapid hardening concrete composition for road repair containing steelmaking reducing slag powder and method of pave a road using the same |
| KR10-2014-0024367 | 2014-02-28 | ||
| PCT/KR2014/001914 WO2015129947A1 (en) | 2014-02-28 | 2014-03-07 | Rapid-hardening concrete composition for road repair using rapidly cooled steel reducing slag powder as bonding material, and method for road repair using rapid-hardening concrete composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106061918A CN106061918A (en) | 2016-10-26 |
| CN106061918B true CN106061918B (en) | 2019-08-30 |
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ID=52287759
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480076428.2A Expired - Fee Related CN106061918B (en) | 2014-02-28 | 2014-03-07 | Use chilling steel reducing slag powder as the road repair of jointing material rapid-hardening concrete composition and the method for using rapid-hardening concrete composition repairing road |
Country Status (3)
| Country | Link |
|---|---|
| KR (1) | KR101460632B1 (en) |
| CN (1) | CN106061918B (en) |
| WO (1) | WO2015129947A1 (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101796932B1 (en) | 2015-06-12 | 2017-11-14 | (주)콘텍이엔지 | Concrete for repairing road and road repairing method |
| KR101581905B1 (en) | 2015-11-02 | 2016-01-04 | 김건우 | Eco friendly non-cement quick-hardning binder composition for concrete and quick-hardning concrete composition containing the same |
| KR101866639B1 (en) * | 2016-05-31 | 2018-06-11 | 공주대학교 산학협력단 | Repairing materials composition comprising oxidizing slag |
| KR101762584B1 (en) * | 2017-02-14 | 2017-08-02 | 주식회사 한강이앤씨 | Eco-friendly concrete coating composition and the method of concrete coating using the same |
| KR102187185B1 (en) * | 2019-07-29 | 2020-12-07 | 김건우 | Fast-curing cement composition using dry slow-cooling slag and quick-setting concrete composition using the composition |
| KR102054829B1 (en) * | 2019-08-21 | 2019-12-13 | 주식회사 지케이기술연구소 | Waterproof Asphalt Concrete Composition for Overlay Pavement Using Petroleum Resin Added Hydrogen and Stylene Isoprene Stylene and Constructing Methods of Entire Type Waterproof for Cracks of Surface Using Thereof |
| KR102054820B1 (en) * | 2019-08-21 | 2019-12-12 | 주식회사 지케이기술연구소 | Waterproof Asphalt Concrete Composition for Overlay Pavement Using Petroleum Resin Added Hydrogen, Stylene Isoprene Stylene and Stylene Butadien Stylene and Constructing Methods of Entire Type Waterproof for Cracks of Surface Using Thereof |
| KR102059837B1 (en) * | 2019-09-03 | 2019-12-27 | 주식회사 지케이기술연구소 | Half-Elastic Modified Asphalt Concrete Composition Using Petroleum Resin Added Hydrogen and Stylene Isoprene Stylene and Constructing Repairing Method of Entire Type Waterproof for Cracks of Surface Using Thereof |
| KR102059840B1 (en) * | 2019-09-03 | 2019-12-27 | 주식회사 지케이기술연구소 | Waterproof Asphalt Concrete Composition for Thin Overlay Pavement Using Petroleum Resin Added Hydrogen and Stylene Isoprene Stylene and Constructing Repairing Method of Entire Type Waterproof for Cracks of Surface Using Thereof |
| KR102105695B1 (en) * | 2020-02-05 | 2020-04-28 | 주식회사 지케이기술연구소 | Asphalt Concrete Compositions Comprising of Stylene Isoprene Stylene and Improved Aggregate-powder for Preventing Settlement of Pavement and Reserving Bearing Power and Stabilization Processing Methods of Basement Layer Using Mixing System Device and Thereof |
| CN113060979B (en) * | 2021-03-26 | 2022-09-23 | 上海宝田新型建材有限公司 | Corrosion-resistant high-strength cementing material prepared by modifying steelmaking wastes |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006233576A (en) * | 2005-02-24 | 2006-09-07 | Yoji Komura | Paving material using converter slag dust |
| CN1296307C (en) * | 2005-05-12 | 2007-01-24 | 武汉理工大学 | Rapid-hardening early-strengthening wearable concrete material for road repair and its preparation method |
| KR101234787B1 (en) * | 2010-11-10 | 2013-02-20 | 주식회사 에코마이스터 | Ultra-fast hard hydraulic binder using reduced slag powder and its manufacturing method |
| KR101158302B1 (en) * | 2012-01-09 | 2012-06-26 | 강승희 | Latex modified concrete composition containing by-product of steel and method of thereof |
| KR101243975B1 (en) * | 2012-07-25 | 2013-03-15 | 공주대학교 산학협력단 | Hydraulic binder composition using quenching steel reduction slag powder and its manufacturing method |
| KR101355400B1 (en) * | 2013-08-09 | 2014-01-28 | 주식회사 청호 | Rapid hardening cement concrete composite with excellent durability and repairing method of road pavement using the composite |
-
2014
- 2014-02-28 KR KR1020140024367A patent/KR101460632B1/en active IP Right Grant
- 2014-03-07 CN CN201480076428.2A patent/CN106061918B/en not_active Expired - Fee Related
- 2014-03-07 WO PCT/KR2014/001914 patent/WO2015129947A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| CN106061918A (en) | 2016-10-26 |
| KR101460632B1 (en) | 2014-11-12 |
| WO2015129947A1 (en) | 2015-09-03 |
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