CN106082891B - A kind of cement-base quick repairing ground surface material and preparation method thereof - Google Patents
A kind of cement-base quick repairing ground surface material and preparation method thereof Download PDFInfo
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- CN106082891B CN106082891B CN201610425586.5A CN201610425586A CN106082891B CN 106082891 B CN106082891 B CN 106082891B CN 201610425586 A CN201610425586 A CN 201610425586A CN 106082891 B CN106082891 B CN 106082891B
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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
- C04B28/06—Aluminous cements
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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
- 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
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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
- 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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- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Road Paving Structures (AREA)
- Road Repair (AREA)
Abstract
The invention discloses a kind of cement-base quick repairing material and preparation method thereof.Fast repairing material is made according to constant weight proportioning using sulphate aluminium cement, Portland cement, washed-out sand, iron tailings sand, silicon ash, slag, water, polycarboxylate water-reducer, water-loss reducer, early strength agent, retarder, PP fibers in the present invention.Present invention admixture trade waste slag and iron tailings sand, the grain composition effect of iron tailings sand and the small-size effect of slag can not only make service behaviour and the mechanical property lifting of pavement patching material, and take full advantage of trade waste, conservation of nature environment.In aspect of performance, the present invention, which prepares material, has that mobility is high, and early strength is high, and wearability is good, and impact resistance is strong, later strength sustainable growth, the features such as micro-expansibility energy, may be used as thick-layer repairing, can also accomplish ultra-thin repairing.
Description
Technical field
The present invention relates to a kind of architecture engineering material, more particularly to a kind of cement-base quick repairing material and its preparation side
Method, it is widely used in concrete road surface quick repair technology field.
Background technology
With the fast development of China's economy, the coagulation civil engineering such as super highway, airfield runway, city square and municipal road
Building thing improves the life of people, promotes the development of economy.However, because load action, natural cause etc. influence, concrete road
Face is often destroyed.The concrete road surface maintenance of damage is relatively difficult to cast aside on road surface again, it is necessary to employ larger machinery
Repair, this causes rehabilitation cost to increase substantially.Not only to repair, curing time is longer, and needs long period close traffic,
Inconvenience is brought, restricts expanding economy.8.0 grades of earthquakes occur for Wenchuan within 2008, and not only wound causes substantial amounts of personnel
Injures and deaths, huge economic loss, the primary highway of severely afflicated area is more caused all to paralyse, railway, reservoir, communication etc. are seriously broken
It is bad.Investigation shows after calamity, and due to lacking suitable traffic restoring material, road traffic is obstructed, rescue personnel and material can not and
When rush to rescue site be influence rescue the reason for one of.Road engineering is to ensure that disaster area rescue personnel and material smoothly reach calamity
Area and the important channel for implementing rescue, " existence line " when being the disaster relief after " lifeline " calamity, post-disaster reconstruction needs the smooth of road
Logical, material is rebuild in endlessly transport.Therefore apply, cheap, property when a kind of daily road surface application of exploitation, disaster relief and rescue
The good Rapid Repairing Material for Read Surface of energy has great importance.
At present, more commonly used pavement patching material is bituminous concrete.But due to the ageing resistance of bituminous concrete
Can be poor, its intensity is far below cement concrete, poor with concrete road surface cementability, therefore this repairing is a kind of emergency measure,
Can not fundamentally solve the problems, such as the repairing of cement concrete pavement.Chinese patent CN101121812A discloses a kind of asphalt mixtures modified by epoxy resin
Aliphatic radical fast repairing material, the patching material can be used for road, bridge, and the quick of the concrete structure such as tunnel and house is repaiied
Mend.Construction is simple, hardening time is short, can reach the purpose of Rapid-Repair.But its aggregate used is aglite, entirely repairs material
The self compacting ability of material is poor, and due to a large amount of uses of epoxy resin, substantially increases the cost of patching material.It is Chinese special
Sharp CN104591649A discloses a kind of modified cement mortar pavement patching material and pavement patching construction method, and the material can profit
For the microcrack of cement concrete pavement, pitted skin and pit repairing construction.Early stage pressure-proof and snap-resistent intensity and adhesive strength are high
In ordinary mortar, repairing quality is good, and cost is low.Its repairing way of escape surface strengthening hardening time is 12 hours, and regards specific temperature feelings
Condition open to traffic.Its deficiency is that to strengthen hardening time long and had a great influence by temperature.
On the other hand, iron tailings sand is to select remaining part after the metals such as useful iron, belongs to trade waste.Huge
Steel demand causes to select factory to discharge a large amount of iron tailings sand every year, and iron tailings sand accounts for 40% or so of total CHARACTERISTICS OF TAILINGS SAND amount.But China
The utilization rate of iron tailings sand is only 7% at present, well below the 60% of developed country.Iron tailings does not only take up a large amount of soils, and
Production of the meeting to people, life bring serious pollution and harm.Now, the extensive concern of the whole society is had been obtained for.Therefore,
Realize the high usage of iron tailings sand and effectively utilize, can not only economize on resources, environmental protection, and can bring considerable
Economic benefit.
Slag is the waste residue for extracting impurity with lime in steel industry and largely generating.China is big steel country, while
It is slag discharge big country.With the development of China's steel-making industry, there is the slag on bulk deposition such as mountain.Industrial residue it is a large amount of
A large amount of soils have not only been occupied in stockpiling, and pollute environment, anxious to be utilized.The yield of China's slag in 2015 up to 20,000,000 tons,
It is existing more than 200,000,000 tons to accumulate slag.At present, effective comprehensive utilization ratio of China's slag only about 50% ~ 60%, in the utilization of building materials field
Rate only about 10%, and American-European, the steel slag utilization rate of Japan and other countries has reached more than 90%.The slag that pile up like a mountain not only accounts for
With the substantial amounts of land resource in China, and different degrees of pollution is caused to environment.How steel is rationally and effectively utilized
Slag, it has also become urgent problem to be solved.
The content of the invention
For problems of the prior art, the invention provides a kind of cement-base quick repairing material and its preparation side
Method.Present invention admixture trade waste slag and iron tailings sand, the grain composition effect of iron tailings sand and the small size effect of slag
It should can not only make service behaviour and the mechanical property lifting of pavement patching material, and take full advantage of trade waste, protect
Protect natural environment.In aspect of performance, the present invention, which prepares material, has mobility high, and early strength is high, and wearability is good, impact resistance
Can be strong, later strength sustainable growth, the features such as micro-expansibility energy, thick-layer repairing is may be used as, can also accomplish ultra-thin repairing（Thickness
8mm-10mm）.
The present invention uses following technical scheme：
A kind of cement-base quick repairing ground surface material, it is characterised in that it is made up of the raw material of following percentage by weight：
Quick hardening sulphoaluminate cement 15.32%~25.88%, Portland cement 4.30%~5.62%, silicon ash 2.04%~2.87%,
Slag 2.36%~3.14%, washed-out sand 52.36%~62.77%, iron tailings sand 2.69%~6.38%, PP fibers 0.12~
0.14%th, polycarboxylate water-reducer 0.27%~0.29%, early strength agent 0.08%~0.10%, retarder 0.029%~0.031%, water conservation
Agent 0.049 ~ 0.051%, water 7.85%~10.21%；
The early strength agent is lithium carbonate；The retarder is boric acid；The water-loss reducer is hydroxypropyl methyl cellulose ether.
Preferably, the quick hardening sulphoaluminate cement is SAC 42.5, and particle size range is 0.115 μm ~ 101.52 μm, average
18.477 μm of particle diameter.
Preferably, the Portland cement is PO 42.5, and particle size range is 0.115 μm ~ 104.912 μm, is put down
Equal particle diameter is 20.403 μm.
Preferably, the slag is S95 level slags, the m of specific surface area 3802/ kg, particle size range be 0.477 μm ~
51.591 μm, average grain diameter is 14.135 μm.
Preferably, the m of specific surface area taste 23000 of the silicon ash2/ kg, particle size range is 0.04 μm ~ 0.28 μm, average
0.180 μm of particle diameter.
A kind of preparation method of cement-base quick repairing ground surface material, it is characterised in that by above-mentioned quick hardening sulphoaluminate water
Mud, Portland cement, silicon ash, slag, washed-out sand, iron tailings sand, PP fibers, polycarboxylate water-reducer, early strength agent, slow setting
Agent, water-loss reducer are added to dry mixing 2min in mixer agitator according to raw material weight percentage, each matrix material is uniformly dispersed,
Corresponding water stirring 4min is added, forms the slurry of uniform good fluidity.
The polynary complex system that pavement patching material is generally made up of ten several raw materials, various raw materials interact and caused
Single variable adjustment can not obtain most reasonably matching, it may be possible to cause existing Rapid Repairing Material for Read Surface old mixed with road surface
Native poor compatibility is coagulated, adhesive strength is low, and viscosity height in work progress also be present, and construction effect is poor, and early strong pressure-proof and snap-resistent is strong
The reason for the problems such as degree is low with adhesion strength, hardening time length, and service behaviour is bad, and cost is high.Rational proportioning not only can be with
Save cement material, moreover it is possible to lift the compaction rate of pavement patching material, lift its performance, high property is prepared by reasonably matching
The pavement patching material of energy is very necessary.The present invention is theoretical based on dense packing, by between mineral spike and sand particle
Matching, reach the closestpacking of compound system in the solid state, so as to improve the compactness of pavement patching material system,
To realize its high performance.Using calculation procedure, start with proportion optimizing from tightly packed theoretical calculation particle diameter, bond strength is real
Test and determine optimum proportioning with fluidity, can accomplish respectively 2 hours, 4 hours, 6 hours road surfaces of requirement for reaching open to traffic repair
Mend material.It is respectively 25min~35min that slurry, which controls pre-hardening and whole setting time,.
The beneficial effects of the invention are as follows：The present invention improves the compaction rate of mortar by the rational gradation composition between aggregate particle,
Reduce while powder body material wastes and reduce mortar porosity, strengthen mechanical property and service behaviour, make use of Industry Waste
The Rapid Repairing Material for Read Surface of gurry slag and iron tailings.The present invention also has the advantage that：High fluidity, early strength is high, resistance to
Mill, impact resistance, high frost resistance, high permeability resistant, later strength not retraction are held, have micro-expansibility energy, can be repaired with thick-layer, also may be used
Accomplish ultra-thin repairing（Thickness 8mm-10mm）.Pp fibers are added, toughness is effectively improved, bending and compressive strength, reduces and shrink, resist
Impact resistance is split, wear-resisting ageing-resistant function.Trade waste iron tailings sand and slag are effectively used in patching material, are not only due to
The grain composition effect of iron tailings sand and the small-size effect of slag lift service behaviour and mechanical property, improve ground surface material
Wearability and impact resistance, and take full advantage of trade waste, conservation of nature environment.Cement-base quick repairing of the present invention
Ground surface material raw material sources are wide, cheap, and workability and repair efficiency are good, available for Cement Concrete Pavement Reconstruction.
Brief description of the drawings
Fig. 1 is each component granularmetric analysis figure of the present invention.
Fig. 2 is the tightly packed optimum results of each component of the present invention.
Embodiment
Present disclosure is described in further detail with reference to specific embodiment.
The present invention carries out mix-design using maximal unit weight method, by Dinger-Funk models to each powder material
Material and sand carry out accumulation optimization, and accompanying drawing 1 is shown in each component granularmetric analysis, and tightly packed optimum results are shown in accompanying drawing 2, and optimum results show
Matched curve and aim curve fitting degree are good, and match ratio is optimized on the basis of tightly packed system, obtain as
Lower 3 kinds can be in the fast repairing material proportioning that 2h, 4h, 6h are open to traffic.Situation, patching material are destroyed according to different concrete road surfaces
Can, be open to traffic time requirement and save cost situations such as implemented.Washed-out sand used screening such as table 1 below in the present invention.
The washed-out sand of table 1 is sieved
Embodiment 1：It is open to traffic within 2 hours
The compositing formula of cement-base quick repairing ground surface material is：Portland cement：4.30%th, sulphate aluminium cement：
25.88%th, washed-out sand：52.36%th, iron tailings sand：2.69%th, silicon ash：2.87%th, slag：2.36%th, water 8.96%, polycarboxylic acids diminishing
Agent：0.27%th, water-loss reducer：0.051%th, early strength agent：0.09%th, retarder：0.029 %, PP fiber：0.14%.
Weighed by above-mentioned each component according to percentage by weight, raw material in addition to water is added to dry mixing in mixer agitator
2min, each matrix material is uniformly dispersed, add corresponding water stirring 4min, form the road surface of uniform good fluidity
Repair slurry.Slurry divergence under self gravitation is 260mm.This example formulations is the slight pitted skin for concrete road surface,
What the destruction such as undisguised carried out repairing progress is ultra-thin repairing, repairing thickness 8mm~10mm.To the pit of concrete road surface, corner
Breakage can also be formulated with this.Specific construction technology process and condition are：
1）Preparation：The portion faces that will be repaired are cleaned out, and remove dust and debris, and it is dry will to loosen position rejecting
Only.
2）Start patch work：The repairing slurry of good fluidity is prepared, paves on the road surface handled well, adds
Slurry levelling is set to complete repairing with human assistance.
3）Execution conditions：5 DEG C~35 DEG C of temperature.Rainy day should not construct.
2 hours after repairing can open to traffic.Patching material performance is as follows after 2 hours：
Table 2 patching material, 2 hours intensity
| 2h compression strength/Mpa | 2h rupture strengths/Mpa | 2h adhesive strengths/Mpa |
| 35.0 | 6.5 | 3.2 |
In order that the pavement patching material bending and compressive strength studied reaches standard, existing highway cement may be referred to
Concrete road surface design specification（It see the table below 3）, it is believed that if road deck intensity meets that the 75% of heavily loaded design requirement can be open to traffic.I
State《Distress in concrete epoxide resin grouting material》Code requirement dry bond strength >=3.0MPa.Therefore, pavement patching material
The intensity of material is specified below：
The Cement Concrete Pavement Slab intensity requirement value of table 3
| Traffic loading grade | It is extremely heavy, extra heavy, weight | It is medium | Gently |
| Rupture strength/Mpa | ≥5.0 | 4.5 | 4.0 |
| Compression strength/Mpa | ≥35 | 25 | 20 |
Note：Select from《Highway cement concrete pavement design specification》（JTG D40-2011）
（1）2h rupture strengths：Not less than 3.75Mpa.
（2）2h compression strength：Not less than 25Mpa.
From examples detailed above, cement-base quick repairing ground surface material provided by the invention has preferable adhesive strength,
Higher pressure-proof and snap-resistent intensity, hardening post-shrinkage ratio is small, flawless.It is water-fast, ageing-resistant, freeze-thawing resistant, wear and shock-resistant.Outward appearance is put down
Whole seamless, it is easy to clean and safeguards.Construction is simple is convenient, condenses soon, shortens the construction period, can reach the requirement that is open to traffic within 2 hours.
Embodiment 2：It is open to traffic within 4 hours
The compositing formula of cement-base quick repairing ground surface material is：Portland cement：5.23%th, sulphate aluminium cement：
15.70%th, washed-out sand：62.77%th, iron tailings sand：2.70%th, silicon ash：2.04%th, slag：3.14%th, water 7.85%, polycarboxylic acids diminishing
Agent：0.28%th, water-loss reducer：0.05%th, early strength agent：0.08%th, retarder：0.03 %, PP fiber：0.13%.
Weighed by above-mentioned each component according to percentage by weight, raw material in addition to water is added to dry mixing in mixer agitator
2min, each matrix material is uniformly dispersed, add corresponding water stirring 4min, form the road surface of uniform good fluidity
Repair slurry.Slurry divergence under self gravitation is 255mm.Cement-base quick repairing material of the present invention is characterised by repairing material
Material can use Machine-made Sand, and its early strength is higher.Different larval instar intensity is shown in Table 3.The material is mainly used in thick-layer repairing, to coagulation
The various damages of soil surface can use it just to repair, and aggregate processing is simple, and source is wide, inexpensively.Therefore can largely it use.Specifically
Construction technology process and condition be：
1）Preparation is identical with example 1.
2）It is identical with example 1 to start patch work.
3）Execution conditions are identical with example 1.
The quick pavement patching material of cement base of the present invention is from adding water to stir, and repairing finishes open to traffic, it is only necessary to 4h.One
Its adhesive strength is 4.0Mpa.Table 4 is the different larval instar intensity of the material.
The patching material different larval instar intensity of table 4
| Age | 4 hours | 6 hours | 1 day | 3 days |
| Rupture strength/Mpa | 6.0 | 6.7 | 9.5 | 10.4 |
| Compression strength/Mpa | 31.2 | 36.3 | 50.3 | 61.8 |
Present invention utilizes Machine-made Sand, substitutes aluminium sulfate water with substantial amounts of Portland cement and mineral admixture
Mud.Improve the workability of slurry, increase its stable long-term strength.Cost is substantially reduced simultaneously, can largely be used.After hardening
Slurry can be open to traffic at 4 hours.
Embodiment 3：It is open to traffic within 6 hours
The compositing formula of cement-base quick repairing ground surface material is：Sulphate aluminium cement：15.32%th, normal silicate water
Mud：5.62%th, washed-out sand：57.29%th, iron tailings sand：6.38%th, silicon ash：2.04%th, slag：2.46%th, water 10.21%, polycarboxylic acids subtract
Aqua：0.29%th, water-loss reducer：0.049%th, early strength agent：0.10%th, retarder：0.031 %, PP fiber：0.12%.
Weighed by above-mentioned each component according to percentage by weight, raw material in addition to water is added to dry mixing in mixer agitator
2min, each matrix material is uniformly dispersed, add corresponding water stirring 4min, form the road surface of uniform good fluidity
Repair slurry.Slurry divergence under self gravitation is 285mm.This example formulations is especially suitable for the serious pitted skin dew in concrete road surface
Bone, pit, the damaged repairing in corner, simultaneously for very economical for the road surface for needing large surface mending.Specific construction
Technological process and condition are：
1）Preparation is identical with example 1.
2）Start patch work：The repairing slurry of good fluidity is prepared, paves on the road surface handled well, adds
Slurry levelling is set to complete repairing with human assistance.For pit, corner is damaged, when repairing slurry levelling slurry horizontal plane with it is old
Concrete is equal.It is 30mm ~ 40mm to repair paste thickness simultaneously.
3）Execution conditions are identical with example 1.
For the quick pavement patching material of cement base of the present invention from adding water to stir, repairing finishes open to traffic, it is necessary to 6h.One day
Adhesive strength is 3.5Mpa.Table 5 is the different larval instar intensity of the material.
The patching material different larval instar intensity of table 5
| Age | 6 hours | 1 day | 3 days |
| Rupture strength/Mpa | 6.9 | 8.9 | 10.0 |
| Compression strength/Mpa | 30.1 | 42.7 | 55.3 |
The early stage pressure-proof and snap-resistent intensity and adhesive strength of pavement patching material of the present invention are above other repairing road surface at quick speed
Material, slurry pre-hardening and whole setting time is respectively 25min~35min, is not exclusively advantageous for the quick reparation of concrete road surface,
And repairing effect is good, cost is low.Iron tailings is also added into pavement patching material, effectively make use of discarded object, is reached
Economic and environment-friendly requirement.In test it has also been found that the wearability of the invention material is better than existing cement-concrete pavement wearability.So this
Invention cement-base quick repairing ground surface material relative inexpensiveness, it is functional, it can largely be used in highway, square, municipal administration
In highway.
Claims (2)
1. a kind of cement-base quick repairing ground surface material, it is characterised in that it is made up of the raw material of following mass percent：It hurry up
Hardening sulphoaluminate cement 15.32%~25.88%, Portland cement 4.30%~5.62%, silicon ash 2.04%~2.87%, steel
Slag 2.36%~3.14%, washed-out sand 52.36%~62.77%, iron tailings sand 2.69%~6.38%, PP fibers 0.12~
0.14%th, polycarboxylate water-reducer 0.27%~0.29%, early strength agent 0.08%~0.10%, retarder 0.029%~0.031%, guarantor
Aqua 0.049 ~ 0.051%, water 7.85%~10.21%；
The early strength agent is lithium carbonate；The retarder is boric acid；The water-loss reducer is hydroxypropyl methyl cellulose ether；
The quick hardening sulphoaluminate cement is SAC 42.5, and particle size range is 0.115 μm ~ 101.52 μm, the μ of average grain diameter 18.477
m；
The Portland cement is PO 42.5, and particle size range is 0.115 μm ~ 104.912 μm, and average grain diameter is
20.403μm；
The m of slag specific surface area 3802/ kg, particle size range are 0.477 μm ~ 51.591 μm, and average grain diameter is 14.135 μm；
The specific surface area of the silicon ash is 23000 m2/ kg, particle size range are 0.04 μm ~ 0.28 μm, 0.180 μm of average grain diameter.
2. the preparation method of the cement-base quick repairing ground surface material described in a kind of claim 1, it is characterised in that will be described fast
Hardening sulphoaluminate cement, Portland cement, silicon ash, slag, washed-out sand, iron tailings sand, PP fibers, polycarboxylate water-reducer,
Early strength agent, retarder, water-loss reducer are added to dry mixing 2min in mixer agitator according to raw material weight percentage, make each matrix material
Material is uniformly dispersed, and cement based patching material is made, and during to engineer applied, adds corresponding water and is stirred, mixing time
For 4min, the slurry of uniform good fluidity is formed.
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| CN101172833A (en) * | 2007-10-25 | 2008-05-07 | 王力强 | Cement concrete surface renovating material |
| CN101823862A (en) * | 2010-05-31 | 2010-09-08 | 郑州筑邦建材有限公司 | Road quick patching material |
| CN102180638A (en) * | 2011-01-28 | 2011-09-14 | 内蒙古科技大学 | Repairing material for concrete pavement in mining area |
| CN104261733A (en) * | 2014-09-02 | 2015-01-07 | 金科 | High-strength concrete and preparation method thereof |
| CN104909709A (en) * | 2015-05-26 | 2015-09-16 | 武汉市市政建设集团有限公司 | Green rapid-hardening early-strength magnesium phosphate-based healant and preparation method thereof |
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