CN110330270A - A kind of steel slag cold-repairing material and preparation method thereof - Google Patents
A kind of steel slag cold-repairing material and preparation method thereof Download PDFInfo
- Publication number
- CN110330270A CN110330270A CN201910605014.9A CN201910605014A CN110330270A CN 110330270 A CN110330270 A CN 110330270A CN 201910605014 A CN201910605014 A CN 201910605014A CN 110330270 A CN110330270 A CN 110330270A
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- Prior art keywords
- cold
- slag
- steel slag
- repairing material
- aggregate
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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
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/26—Bituminous materials, e.g. tar, pitch
-
- 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
- C04B2111/72—Repairing or restoring existing buildings or building materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Road Repair (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses a kind of steel slag cold-repairing materials, are made of the slag as aggregate, emulsified asphalt, alkyd resin of certain gradation composition, and according to parts by weight, each constituent is slag as aggregate 100-200 parts, 8-20 parts of emulsified asphalt, 0.16-0.4 parts of alkyd resin.This uses steel slag for the cold-repairing material of primary raw material, to overcome existing cold-repairing material early strength low and the disadvantage of anti-water damage property deficiency；And the cold-repairing material preparation cost is lower, and simple production process and environmental benefit are good.
Description
Technical field
The invention belongs to road rehabilitation technical fields, and in particular to a kind of steel slag cold-repairing material and preparation method thereof.
Background technique
In road rehabilitation technical field, direct cover method, milling, which are thrown, overlays virgin material method and digging method as traditional asphalt road
Face repairing method is able to solve pavement disease and destroys problem, but to repair cost big, long in time limit for these three modes, and it repairs result
Original pavement structure may be changed.And now the front end mode of LB mending technique, such as micro zooming and asphalt
On-site heat regeneration repairing technique, the construction period is short, and road can be advanced optimized on the basis of not changing original pavement structure
Face performance.But both LB mending technique maintenance costs are higher, and complex process, which has limited the technologies in ordinary road
Using.
Above-mentioned repairing technique is hot repair reinforcing method, and repairing technique is simple, and construction technology is mature, and pit repairing effect is good
It is good.But small for repairing amount, for the road surface of pit slot dispersion, the reparation difficulty of the patching is big and at high cost.Cold-repairing material conduct
One kind can stored asphalt mixture, the characteristics of normal low temperature uses and quickly and easily repair technology, it is mixed for hot asphalt
The deficiency for closing material repairing aspect provides an effective solution approach.
What the bond of internal friction and cold-patch that cold-repairing material mechanical strength is mainly provided by aggregate embedded squeezing was constituted.Therefore cold
The core formulation of feed supplement is aggregate and cold-patch liquid.CN108033711A describes a kind of emulsified asphalt cold-repairing material, and wherein aggregate is
Any one in basalt, limestone or dolomite, and steel-making slag powder is used as filler to be added in cold-repairing material after modified, pass through through
The chemical bonding that silica hydroxyl is formed in steel-making slag powder and natural aggregate after hydrochloric Acid Modification is to promote the mechanical property of system
Energy.CN108911641A describes the mixture and its method for repairing and mending of a kind of fast repairing asphalt pavement, using steel slag conduct
Aggregate, but the performance of steel slag is not provided.In fact the basicity of steel slag and its hydration activity have direct relationship, work as steel slag
When basicity is greater than 2.2, with water apparent hydration reaction could occur for steel slag, to form steel slag skeleton from setting strength.
Outer Current Domestic is not very mature, performance characteristic such as cold-repairing material repairing to the research of cold repairing asphalt mixture
All there are biggish gaps with hot-mix asphalt mixture for early strength afterwards, water stability and durability.Therefore, demand is suitable
Approach it is great to promote application value of the performance indicator of cold-patch liquid to cold paving technique in road rehabilitation field.
Summary of the invention
The technical problems to be solved by the present invention are: provide it is a kind of use steel slag be mainly gather materials, with watersoluble modified alkyd
The cold-repairing material that resin is blended as main cementitious matter with emulsified asphalt, to overcome existing cold-repairing material early strength low and anti-water damage
The insufficient disadvantage of energy；And the cold-repairing material preparation cost is lower, and simple production process and environmental benefit are good.
The present invention solves above-mentioned technical problem, and the following technical solution is employed:
Cold-repairing material provided by the invention by the gathering materials of certain gradation composition, emulsified asphalt, watersoluble modified alkyd resin form,
According to parts by weight, each constituent is to gather materials 100-200 parts, 8-20 parts of emulsified asphalt, watersoluble modified alkyd resin 0.16-
0.4 part.
It is described to gather materials for slag as aggregate in above scheme, it is prepared by converter slag or electric furnace slag.Gather materials maximum
Nominal particle diameter can be 9.5mm, 13.2mm, 16mm and 19mm, and gradation composition is referring to " standard specification for construction and acceptance of highway asphalt pavement "
In to cold repairing asphalt mixture requirement preparation；And the basicity of steel slag is required to must not drop below 2.2, i.e., calcium oxide and oxygen in steel slag
Change the sum of content of magnesium and the ratio of dioxide-containing silica is not less than 2.2.
In above scheme, the watersoluble modified alkyd resin, oil content 35-38, surface drying time is in 30-40min.
The present invention also provides a kind of preparation method of above-mentioned cold-repairing material, include the following steps: emulsified asphalt and alkyd tree
Rouge stirs 1-2min according to corresponding dosage at normal temperature, forms cold-patch liquid；The slag as aggregate of specified grading is added, is stirred with cold-patch liquid
It mixes uniformly, forms cold-repairing material.
Cardinal principle of the invention are as follows:
1. steel slag as gathering materials, has the characteristics that more preferable with asphalt adhesion and steel slag skeleton itself has hydraulically active: phase
Than tricalcium silicate, dicalcium silicate and the iron aluminic acid four in natural rock, the used high alkalinity steel slag (basicity >=2.2) of the present invention
With the water of emulsified asphalt hydration reaction can occur for the ingredients such as calcium, C-S-H gel be formed, so that bonding between steel slag coarse aggregate
Come, quickly improves cementing strength.Meanwhile steel slag has bigger mechanical strength, and steel slag and matrix drip at the same temperature
Blueness has smaller contact angle, and pitch more easily " soaks " steel slag surface, embodies steel slag and the excellent adhesion property of pitch.And
And present invention employs the slag as aggregate composition proposals with embedded squeezing gradation, when reacted with water, between slag as aggregate contact point
Firm bonding is formd, to improve the early strength of cold-repairing material；Other than the hydration reaction of above-mentioned mineral, in steel slag
The substances such as free calcium oxide, free magnesium can also be reacted with water, accelerated to consume the moisture content in emulsified asphalt, obtained cold-repairing material
Obtain good early strength.
2. watersoluble modified alkyd resin and emulsified asphalt have good compatibility, cold-patch liquid is enable to be uniformly mixed and surely
Fixed storage: after emulsified asphalt is mixed with watersoluble modified alkide resin emulsion, since the factors such as external force act on so as to cause lotion hair
Wherein the tridimensional network that watersoluble modified alkyd resin is formed is assembled and be uniformly filled to pitch little particle after raw demulsification
Inside, be cross-linked with each other and become one it is firm whole, in watersoluble modified alkyd emulsification asphalt emulsion, moisture slowly
After scattering and disappearing, intensity also can gradually be reinforced.Pitch and the good compatibility of watersoluble modified alkyd resin be also embodied in pitch particle and
Both polymeric particles itself crisscross motion eventually becomes firm physical crosslinking key.Aqueous alkide resin is adsorbed on pitch particle
Surface, form stable pitch colloform texture；After moisture reacts with associated minerals, scatters and disappears and start film forming in lotion, drip
It can be come into full contact between green and alkyd resin particle, it can be with further occurrence chemical bond cross-linking reaction, alkyd resin macromolecular
More firm entirety is mutually cross-linked to form with pitch small molecule.
Compared with prior art, the beneficial effects of the present invention are:
1, the present invention utilizes high viscosity, the high adhesion of aqueous alkide resin, has from dry characteristic, and viscosity is high, with
Emulsified asphalt compatibility is good, can accelerate the drying of cold-repairing material, improve the cementitiousness of cold-repairing material and asphalt, improve cold-patch
The intensity of material.
2, the manufactured cold-repairing material come out can use under normal low temperature through the invention, intensity height, anti-water damage property
It is good, the repairing quality on road surface can be promoted and effectively avoid the secondary breakoff phenomenon occurred after pavement patching.
3, cold-repairing material major part raw material of the invention is steel slag, and raw material sources are extensive, low in cost, and it prepares work
Skill is simple, and the large-scale application of cold-repairing material may be implemented；And cold-repairing material is prepared using slag as aggregate realize solid waste
Effective use not only alleviates the situation of natural high-quality shortage of gathering materials, the type gathered materials in cold-repairing material is also added, for base from now on
It haves laid a good foundation in the application for the cold-repairing material that steel slag is prepared.
Specific embodiment
Steel slag cold-repairing material of the invention is furtherd elucidate below with reference to embodiment, but the present invention is not limited solely to down
The embodiment in face.
In following embodiments, watersoluble modified alkyd resin is prepared referring to CN201610551935.8.The emulsified asphalt of use
Model BC-1-SS, is provided by Hubei Guochuang Hi-tech Material Co., Ltd..Steel slag has from the blue metallurgical science and technology of Hubei Jin Sheng
Limit company, specific gradation are as shown in table 1.
The slag as aggregate gradation of 1 embedded squeezing gradation of table
Embodiment 1
A kind of steel slag cold-repairing material and preparation method thereof, detailed process is as follows:
According to parts by weight, will gather materials, emulsified asphalt and alkyd resin are according to gathering materials 100 parts, 8 parts of emulsified asphalt, alkyd
The ratio that 0.16 part of resin prepares, and emulsified asphalt and alkyd resin are then stirred 1min, shape according to corresponding dosage at normal temperature
At cold-patch liquid；It is eventually adding the slag as aggregate of specified grading, is stirred evenly with cold-patch liquid, cold-repairing material is formed.
Embodiment 2
A kind of steel slag cold-repairing material and preparation method thereof, detailed process is as follows:
According to parts by weight, will gather materials, emulsified asphalt and alkyd resin are according to gathering materials 150 parts, 16 parts of emulsified asphalt, alkyd
0.2 part of ratio of resin prepares, and then emulsified asphalt and alkyd resin is stirred 1min according to corresponding dosage at normal temperature, is formed cold
Fluid infusion；It is eventually adding the slag as aggregate of specified grading, is stirred evenly with cold-patch liquid, cold-repairing material is formed.
Embodiment 3
A kind of steel slag cold-repairing material and preparation method thereof, detailed process is as follows:
According to parts by weight, will gather materials, emulsified asphalt and alkyd resin are according to gathering materials 200 parts, 20 parts of emulsified asphalt, alkyd
The ratio that 0.4 part of resin prepares, and emulsified asphalt and alkyd resin are then stirred 2min according to corresponding dosage at normal temperature, is formed
Cold-patch liquid；It is eventually adding the slag as aggregate of specified grading, is stirred evenly with cold-patch liquid, cold-repairing material is formed.
Comparative example:
Specific preparation process are as follows: according to parts by weight, it will gather materials, emulsified asphalt is according to gathering materials 100 parts, 8 parts of emulsified asphalt
Ratio prepare.Emulsified asphalt is stirred into 2min according to corresponding dosage at normal temperature and then the slag as aggregate of specified grading is added.
The performance indicator of steel slag cold-repairing material prepared by embodiment 1-3 and comparative example is as shown in table 2.
2 steel slag cold-repairing material performance indicator of table
From the test result of table 2 can be seen that 4 kinds of its residual stabilities of cold-repairing material obtained by embodiment 1-3 and comparative example and
Freeze-thaw split tensile strength ratio is held at higher level, this shows steel slag cold-repairing material anti-water damage property provided by the invention
Preferably, and intensity is high.Wherein, the alkyd resin that embodiment 3 is added is most, therefore its intensity highest, water resistance and cohesiveness are equal
It is best in all embodiments；Alkyd resin is not added in comparative example and only emulsified asphalt, residual stability and freeze thawing is split
Tensile strength is split than minimum.Showing steel slag cold-repairing material scheme provided by the invention, not only early strength is high, but also system stability
It is good, it is not easy to the problems such as isolating.
The invention is not limited to above-mentioned specific embodiments, and the above mentioned embodiment is only schematical,
Rather than it is restrictive, those skilled in the art under the inspiration of the present invention, are not departing from present inventive concept and right
It is required that can also make many forms, all of these belong to the protection of the present invention under the ambit protected.
Claims (4)
1. a kind of steel slag cold-repairing material, it is characterised in that be made of slag as aggregate, emulsified asphalt, watersoluble modified alkyd resin, by weight
Measure number meter, each constituent be slag as aggregate 100-200 parts, 8-20 parts of emulsified asphalt, watersoluble modified alkyd resin 0.16-
0.4 part.
2. a kind of steel slag cold-repairing material according to claim 1, it is characterised in that be slag as aggregate, by converter slag or electric furnace
Steel slag is prepared, and nominal maximum aggregate size can be 9.5mm, 13.2mm, 16mm and 19mm, and gradation composition is referring to " highway asphalt
Pavement construction technical specification " in requirement preparation to cold repairing asphalt mixture, and the basicity of steel slag is required to must not drop below 2.2.
3. a kind of steel slag cold-repairing material according to claim 1, it is characterised in that the oil content of the watersoluble modified alkyd resin
For 35-38, surface drying time is in 30-40min.
4. a kind of steel slag cold-repairing material as claimed in any of claims 1 to 4, preparation method include the following steps:
1) emulsified asphalt and alkyd resin are stirred into 1-2min according to corresponding dosage at normal temperature, form cold-patch liquid；
2) slag as aggregate of specified grading is added, is stirred evenly with cold-patch liquid, forms steel slag cold-repairing material.
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| CN201910605014.9A CN110330270B (en) | 2019-07-05 | 2019-07-05 | Steel slag cold-patch material and preparation method thereof |
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| CN201910605014.9A CN110330270B (en) | 2019-07-05 | 2019-07-05 | Steel slag cold-patch material and preparation method thereof |
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| CN110330270A true CN110330270A (en) | 2019-10-15 |
| CN110330270B CN110330270B (en) | 2021-11-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114956673A (en) * | 2022-07-08 | 2022-08-30 | 重庆重交再生资源开发股份有限公司 | Asphalt pavement steel slag cold-patch material and preparation method thereof |
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| KR101815140B1 (en) * | 2017-06-07 | 2018-01-05 | 김경래 | Organic-inorganic hybrid mortar composition for repairing and restoring the surface of concrete structures and construction method using the same |
| CN107586064A (en) * | 2016-07-07 | 2018-01-16 | 交通运输部公路科学研究所 | A kind of porous asphalt pavement cold-repairing material and preparation method thereof |
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2019
- 2019-07-05 CN CN201910605014.9A patent/CN110330270B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2289495A1 (en) * | 1998-03-18 | 1999-09-23 | Nichireki Co., Ltd. | Mixture for flexible pavement usable at ordinary temperature |
| CN101486538A (en) * | 2009-02-24 | 2009-07-22 | 武汉市公路管理处 | Self-hydration activated pavement base layer |
| CN101942063A (en) * | 2010-08-17 | 2011-01-12 | 华南理工大学 | Water-borne epoxy ester modified alkyd resin emulsion and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114956673A (en) * | 2022-07-08 | 2022-08-30 | 重庆重交再生资源开发股份有限公司 | Asphalt pavement steel slag cold-patch material and preparation method thereof |
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