CN106082891A - 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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- CN106082891A CN106082891A CN201610425586.5A CN201610425586A CN106082891A CN 106082891 A CN106082891 A CN 106082891A CN 201610425586 A CN201610425586 A CN 201610425586A CN 106082891 A CN106082891 A CN 106082891A
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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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Road Paving Structures (AREA)
- Road Repair (AREA)
Abstract
The invention discloses a kind of cement-base quick repairing material and preparation method thereof.The present invention uses sulphate aluminium cement, Portland cement, washed-out sand, iron tailings sand, silicon ash, slag, water, polycarboxylate water-reducer, water-retaining agent, early strength agent, retarder, PP fiber to make fast repairing material according to constant weight proportioning.The present invention fills trade waste slag and iron tailings sand, and the grain composition effect of iron tailings sand and the small-size effect of slag are possible not only to make the service behaviour of pavement patching material and mechanical property promote, and take full advantage of trade waste, conservation of nature environment.At aspect of performance, the present invention prepares material and has mobility height, and early strength is high, the features such as wearability is good, and impact resistance is strong, later strength sustainable growth, microdilatancy performance, can serve as thick-layer and repairs, it is possible to accomplishes ultra-thin repairing.
Description
Technical field
The present invention relates to a kind of architecture engineering material, particularly to a kind of cement-base quick repairing material and preparation side thereof
Method, is widely used in quick repair technology field, concrete road surface.
Background technology
Along with coagulation civil engineerings such as the fast development of China's economy, super highway, airfield runway, city square and municipal road
Build thing and improve the life of people, promote the development of economy.But, due to the impacts such as load action, natural cause, concrete road
Face is often destroyed.The concrete road surface maintenance damaged is relatively difficult, needs to employ bigger machinery and is cast aside again on road surface
Repairing, this makes rehabilitation cost increase substantially.Not only repairing, curing time is longer, and needs long period close traffic,
Bring inconvenience, restrict expanding economy.There are 8.0 grades of earthquakes in Wenchuan in 2008, not only wound causes substantial amounts of personnel
Injures and deaths, huge economic loss, more make the primary highway of severely afflicated area all paralyse, railway, reservoir, communication etc. are seriously broken
Bad.After calamity, investigation shows, owing to lacking suitable traffic restoring material, road traffic is obstructed, rescue personnel and material cannot and
Time arrive in one of reason that rescue site is impact rescue.Road engineering is to ensure that disaster area rescue personnel and material arrive calamity smoothly
District also implements the important channel of rescue, and " existence line " after " life line " calamity when being the disaster relief, post-disaster reconstruction needs the smooth of road
Logical, material is rebuild in transport endlessly.Therefore application, cheap, property when developing the application of a kind of daily road surface, disaster relief and rescue
Can have great importance by good Rapid Repairing Material for Read Surface.
At present, the more commonly used pavement patching material is bituminous concrete.But the ageing resistance due to bituminous concrete
Can be poor, its intensity is far below cement concrete, poor with concrete road surface cementability, and the most this repairing is a kind of emergency measure,
Can not fundamentally solve the repairing problem of cement concrete pavement.Chinese patent CN101121812A discloses a kind of asphalt mixtures modified by epoxy resin
Aliphatic radical fast repairing material, this patching material can be used for road, bridge, quickly repairing of the concrete structure such as tunnel and house
Mend.Construction is simple, and hardening time is short, can reach the purpose of Rapid-Repair.But aggregate used by it is aglite, whole repairing 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.China is specially
Profit CN104591649A discloses a kind of modified cement mortar pavement patching material and pavement patching construction method, and this material can profit
For the microcrack of cement concrete pavement, pitted skin and pit repairing construction.Pressure-proof and snap-resistent intensity and adhesive strength are the highest in early days
In ordinary mortar, repairing quality is good, low cost.It repairs way of escape surface strengthening hardening time is 12 hours, and regards concrete temperature feelings
Condition open to traffic.Its deficiency is that strengthening is long and affected bigger by temperature for hardening time.
On the other hand, iron tailings sand be select the metals such as useful ferrum after remaining part, belong to trade waste.Huge
Steel demand causes selecting factory to discharge a large amount of iron tailings sand every year, and iron tailings sand accounts for about the 40% of total CHARACTERISTICS OF TAILINGS SAND amount.But, China
The utilization rate of iron tailings sand is only 7%, well below the 60% of developed country at present.Iron tailings does not only take up a large amount of soil, and
Can be to the production of people, life brings 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, not only can economize on resources, protect environment, and can bring considerable
Economic benefit.
Slag is the waste residue extracting impurity with Calx in steel industry and generating in a large number.China is big steel country, the most also
It is that slag discharges big country.Along with the development of China's steel-making industry, occur in that the slag on bulk deposition such as mountain.Industrial residue a large amount of
Store up and not only occupied a large amount of soil, and pollute environment, anxious to be utilized.The yield of China's slag in 2015 reaches 20,000,000 tons,
Accumulate existing more than 200,000,000 ton of slag.At present, effective comprehensive utilization ratio the most about 50% ~ 60% of China's slag, 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
By the substantial amounts of land resource of China, and environment is caused pollution in various degree.Utilize steel the most rationally and effectively
Slag, it has also become problem demanding prompt solution.
Summary of the invention
For problems of the prior art, the invention provides a kind of cement-base quick repairing material and preparation side thereof
Method.The present invention fills trade waste slag and iron tailings sand, the grain composition effect of iron tailings sand and the small size effect of slag
Should be possible not only to make the service behaviour of pavement patching material and mechanical property promote, and take full advantage of trade waste, protect
Protect natural environment.At aspect of performance, the present invention prepares material and has mobility height, and early strength is high, and wearability is good, resistance to impact
The features such as energy is strong, later strength sustainable growth, microdilatancy performance, can serve as thick-layer and repair, it is possible to accomplish ultra-thin repairing (thickness
8mm-10mm).
The present invention is by the following technical solutions:
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: the hardest
Sulphate aluminium 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 fiber 0.12～0.14%
, polycarboxylate water-reducer 0.27%～0.29%, early strength agent 0.08%～0.10%, retarder 0.029%～0.031%, water-retaining agent
0.049 ~ 0.051%, water 7.85%～10.21%；
Described early strength agent is lithium carbonate；Described retarder is boric acid；Described water-retaining agent is hydroxypropyl methyl cellulose ether.
Preferably, described quick hardening sulphoaluminate cement is SAC 42.5, and particle size range is 0.115 μm ~ 101.52 μm, averagely
Particle diameter 18.477 μm.
Preferably, described Portland cement is P O 42.5, and particle size range is 0.115 μm ~ 104.912 μm, flat
All particle diameters are 20.403 μm.
Preferably, described slag is S95 level slag, specific surface area 380 m2/ kg, particle size range be 0.477 μm ~
51.591 μm, mean diameter is 14.135 μm.
Preferably, specific surface area taste 23000 m of described silicon ash2/ kg, particle size range is 0.04 μm ~ 0.28 μm, averagely
Particle diameter 0.180 μm.
The preparation method of a kind 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 fiber, polycarboxylate water-reducer, early strength agent, slow setting
Agent, water-retaining agent add dry mixing 2min in blender agitator to according to raw material weight percentage ratio, make each matrix material be uniformly dispersed,
Add corresponding water stirring 4min, form 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 cause
Single variable adjusts can not obtain the most rational proportioning, it may be possible to cause existing Rapid Repairing Material for Read Surface and road surface old mixed
Solidifying soil poor compatibility, adhesive strength is low, and it is high to there is also viscosity in work progress, and construction effect is poor, and the strongest pressure-proof and snap-resistent is strong
Degree and adhesion strength are low, and hardening time is long, and service behaviour is bad, the reason of high in cost of production problem.Reasonably proportioning is possible not only to
Save cement material, moreover it is possible to promote the compaction rate of pavement patching material, promote its performance, prepare high property by rational proportioning
The pavement patching material of energy is the most necessary.The present invention is theoretical based on dense packing, by between mineral spike and sand granule
Coupling, reach compound system closestpacking in the solid state, thus improve the degree of compaction of pavement patching material system,
To realizing 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, the road surface of requirement that arrives open to traffic in 6 hours repaiies
Mend material.Slurry controls initial set and whole setting time is respectively 25min～35min.
The invention has the beneficial effects as follows: the present invention improves the compaction rate of mortar by the rational gradation composition between aggregate particle,
Reduce mortar porosity while reducing powder body material waste, strengthen mechanical property and service behaviour, make use of Industry Waste
Gurry slag and the Rapid Repairing Material for Read Surface of iron tailings.The present invention also has the advantage that high fluidity, and early strength is high, resistance to
Mill, impact resistance, high frost resistance, high permeability resistant, later strength not retraction is held, and has microdilatancy performance, can repair with thick-layer, it is possible to
Accomplish ultra-thin repairing (thickness 8mm-10mm).Add pp fiber, effectively improve toughness, bending and compressive strength, reduce and shrink, anti-
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 make service behaviour and mechanical property promote, and 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 is wide, cheap, and workability and repair efficiency are good, can be used for Cement Concrete Pavement Reconstruction.
Accompanying drawing explanation
Fig. 1 is the present invention each component granularmetric analysis figure.
Fig. 2 is the present invention tightly packed optimum results of each component.
Detailed description of the invention
Below in conjunction with specific embodiment, present disclosure is described in further detail.
The present invention uses maximal unit weight method to carry out mix-design, by Dinger-Funk model to each powder body material
Material and sand carry out piling up and optimize, and each component granularmetric analysis is shown in that accompanying drawing 2 is shown in by accompanying drawing 1, tightly packed optimum results, and optimum results shows
Matched curve and aim curve fitting degree are good, are optimized match ratio on the basis of tightly packed system, obtain as
Lower 3 kinds of fast repairing material proportionings can being open to traffic at 2h, 4h, 6h.Situation, patching material is destroyed according to different concrete road surfaces
Can, it is open to traffic time requirement and the situation such as cost-effective is implemented.Washed-out sand used in the present invention is sieved such as table 1 below.
Table 1 washed-out sand is sieved
Embodiment 1:2 hour is open to traffic
The compositing formula of cement-base quick repairing ground surface material is: Portland cement: 4.30%, sulphate aluminium cement:
25.88%, washed-out sand: 52.36%, iron tailings sand: 2.69%, silicon ash: 2.87%, slag: 2.36%, water 8.96%, polycarboxylic acids diminishing
Agent: 0.27%, water-retaining agent: 0.051%, early strength agent: 0.09%, retarder: 0.029 %, PP fiber: 0.14%.
Weigh according to percentage by weight by above-mentioned each component, raw material in addition to water is added to dry mixing in blender agitator
2min, makes each matrix material be uniformly dispersed, and adds corresponding water stirring 4min, forms 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,
Undisguised wait to destroy carry out repairing that carry out is ultra-thin repairing, repairing thickness 8mm～10mm.Pit to concrete road surface, corner
Breakage can also use this formula.Concrete construction technology process and condition be:
1) preparation: the portion faces that will repair is cleaned out, dust out and foreign material, loosening position is rejected clean.
2) patch work is started: prepare the repairing slurry of good fluidity, pave on the road surface handled well, add
Slurry levelling is made i.e. to complete to repair with human assistance.
3) execution conditions: temperature 5 DEG C～35 DEG C.Rainy day should not construct.
Repairing latter 2 hours can open to traffic.After 2 hours, patching material performance is as follows:
2 hours intensity of table 2 patching material
| 2h comprcssive strength/Mpa | 2h rupture strength/Mpa | 2h adhesive strength/Mpa |
| 35.0 | 6.5 | 3.2 |
In order to make studied pavement patching material bending and compressive strength reach standard, it is referred to existing highway cement coagulation
Soil surface design specification (see table 3), it is believed that if road deck intensity meets heavily loaded 75% required that designs and can be open to traffic.China
" distress in concrete epoxide resin grouting material " code requirement dry bond strength >=3.0MPa.Therefore, pavement patching material
Intensity has specified below:
Table 3 Cement Concrete Pavement Slab requirement of strength value
| Traffic loading grade | The heaviest, extra heavy, weight | Medium | Gently |
| Rupture strength/Mpa | ≥5.0 | 4.5 | 4.0 |
| Comprcssive strength/Mpa | ≥35 | 25 | 20 |
Note: select from " highway cement concrete pavement design specification " (JTG D40-2011)
(1) 2h rupture strength: not less than 3.75Mpa.
(2) 2h comprcssive strength: not less than 25Mpa.
From examples detailed above, the cement-base quick repairing ground surface material that the present invention provides has preferable adhesive strength, higher
Pressure-proof and snap-resistent intensity, hardening post-shrinkage ratio little, flawless.Water-fast, ageing-resistant, freeze-thawing resistant, wear and shock-resistant.Flat appearance without
Seam, it is simple to clean and safeguard.Construct simple and convenient, condense fast, shorten the construction period, within 2 hours, can reach the requirement that is open to traffic.
Embodiment 2:4 hour is open to traffic
The compositing formula of cement-base quick repairing ground surface material is: Portland cement: 5.23%, sulphate aluminium cement:
15.70%, washed-out sand: 62.77%, iron tailings sand: 2.70%, silicon ash: 2.04%, slag: 3.14%, water 7.85%, polycarboxylic acids diminishing
Agent: 0.28%, water-retaining agent: 0.05%, early strength agent: 0.08%, retarder: 0.03 %, PP fiber: 0.13%.
Weigh according to percentage by weight by above-mentioned each component, raw material in addition to water is added to dry mixing in blender agitator
2min, makes each matrix material be uniformly dispersed, and adds corresponding water stirring 4min, forms 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.This material is mainly used in thick-layer and repairs, to coagulation
The various damages of soil surface all can use it just to repair, and aggregate processing is simple, and source is wide, inexpensively.Therefore can use in a large number.Specifically
Construction technology process and condition be:
1) preparation is identical with example 1.
2) patch work is started identical with example 1.
3) execution conditions are identical with example 1.
The quick pavement patching material of cement based of the present invention, from the stirring that adds water, is repaired complete to open to traffic, it is only necessary to 4h.One
It adhesive strength is 4.0Mpa.Table 4 is the different larval instar intensity of this material.
Table 4 patching material different larval instar intensity
| Age | 4 hours | 6 hours | 1 day | 3 days |
| Rupture strength/Mpa | 6.0 | 6.7 | 9.5 | 10.4 |
| Comprcssive strength/Mpa | 31.2 | 36.3 | 50.3 | 61.8 |
Present invention utilizes Machine-made Sand, replace sulphate aluminium cement with substantial amounts of Portland cement and mineral admixture.Change
The workability of kind slurry so that it is stable long-term strength increases.It is substantially reduced cost simultaneously, can use in a large number.Slurry after hardening
Can be open to traffic at 4 hours.
Embodiment 3:6 hour is open to traffic
The compositing formula of cement-base quick repairing ground surface material is: sulphate aluminium cement: 15.32%, Portland cement:
5.62%, washed-out sand: 57.29%, iron tailings sand: 6.38%, silicon ash: 2.04%, slag: 2.46%, water 10.21%, polycarboxylic acids diminishing
Agent: 0.29%, water-retaining agent: 0.049%, early strength agent: 0.10%, retarder: 0.031 %, PP fiber: 0.12%.
Weigh according to percentage by weight by above-mentioned each component, raw material in addition to water is added to dry mixing in blender agitator
2min, makes each matrix material be uniformly dispersed, and adds corresponding water stirring 4min, forms the road surface of uniform good fluidity
Repair slurry.Slurry divergence under self gravitation is 285mm.This example formulations is especially suitable for concrete road surface serious pitted skin dew
Bone, pit, the repairing that corner is damaged, simultaneously for very economical for needing the road surface of large surface mending.Concrete construction
Technological process and condition be:
1) preparation is identical with example 1.
2) patch work is started: prepare the repairing slurry of good fluidity, pave on the road surface handled well, add
Slurry levelling is made i.e. to complete to repair with human assistance.For pit, corner is damaged, and when repairing slurry levelling, slurry water plane is with old
Concrete is equal.Repair paste thickness is 30mm ~ 40mm simultaneously.
3) execution conditions are identical with example 1.
The quick pavement patching material of cement based of the present invention, from the stirring that adds water, is repaired complete to open to traffic, is needed 6h.One day
Adhesive strength is 3.5Mpa.Table 5 is the different larval instar intensity of this material.
Table 5 patching material different larval instar intensity
| Age | 6 hours | 1 day | 3 days |
| Rupture strength/Mpa | 6.9 | 8.9 | 10.0 |
| Comprcssive strength/Mpa | 30.1 | 42.7 | 55.3 |
The early stage pressure-proof and snap-resistent intensity of pavement patching material of the present invention and adhesive strength are above other Rapid Repairing Material for Read Surfaces,
Slurry initial set and whole setting time are respectively 25min～35min, are not exclusively advantageous for the quick reparation of concrete road surface, and
Repairing effect is good, low cost.In pavement patching material, it is also added into iron tailings, effectively make use of garbage, reach economical
The requirement of environmental protection.The most also find that the wearability of this invention material is better than existing cement-concrete pavement wearability.So the present invention
Cement-base quick repairing ground surface material relative inexpensiveness, functional, highway, square, municipal road can be used in a large number
In.
Claims (6)
1. a cement-base quick repairing ground surface material, it is characterised in that it is made up of the raw material of following mass percent: fast
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 fiber 0.12～
0.14%, polycarboxylate water-reducer 0.27%～0.29%, early strength agent 0.08%～0.10%, retarder 0.029%～0.031%, guarantor
Water preparation 0.049 ~ 0.051%, water 7.85%～10.21%；
Described early strength agent is lithium carbonate；Described retarder is boric acid；Described water-retaining agent is hydroxypropyl methyl cellulose ether.
Cement-base quick repairing ground surface material the most according to claim 1, it is characterised in that described quick hardening sulphoaluminate water
Mud is SAC 42.5, and particle size range is 0.115 μm ~ 101.52 μm, mean diameter 18.477 μm.
Cement-base quick repairing ground surface material the most according to claim 1, it is characterised in that described Portland cement
For P O 42.5, particle size range is 0.115 μm ~ 104.912 μm, and mean diameter is 20.403 μm.
Cement-base quick repairing ground surface material the most according to claim 1, it is characterised in that described slag specific surface area
380 m2/ kg, particle size range is 0.477 μm ~ 51.591 μm, and mean diameter is 14.135 μm.
Cement-base quick repairing ground surface material the most according to claim 1, it is characterised in that the specific surface area of described silicon ash
It is 23000 m2/ kg, particle size range is 0.04 μm ~ 0.28 μm, mean diameter 0.180 μm.
6. the preparation method of the cement-base quick repairing ground surface material described in a claim 1, it is characterised in that by described soon
Hardening sulphoaluminate cement, Portland cement, silicon ash, slag, washed-out sand, iron tailings sand, PP fiber, polycarboxylate water-reducer,
Early strength agent, retarder, water-retaining agent add dry mixing 2min in blender agitator to according to raw material weight percentage ratio, make each matrix material
Material is uniformly dispersed, and makes cement based patching material, during to engineer applied, adds corresponding water and is stirred, mixing time
For 4min, form the slurry of uniform good fluidity.
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| CN106977119A (en) * | 2017-04-18 | 2017-07-25 | 武汉理工大学 | A kind of slag aluminium sulfate base intumescent basic unit stable private cement and preparation method thereof |
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| CN113372082A (en) * | 2021-07-16 | 2021-09-10 | 天津水泥工业设计研究院有限公司 | Wear-resistant ultra-high performance concrete and preparation method thereof |
| CN115594476A (en) * | 2022-10-12 | 2023-01-13 | 北科蕴宏环保科技(北京)有限公司（Cn） | Cement-free high-performance concrete repair material and preparation method thereof |
| CN115745535A (en) * | 2022-12-06 | 2023-03-07 | 上海市建筑科学研究院有限公司 | High-toughness super-early-strength rapid road repairing material with large-volume steel slag solid waste |
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