CN101725103A - Polymer cement concrete lamella - Google Patents
Polymer cement concrete lamella Download PDFInfo
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- CN101725103A CN101725103A CN200910223832A CN200910223832A CN101725103A CN 101725103 A CN101725103 A CN 101725103A CN 200910223832 A CN200910223832 A CN 200910223832A CN 200910223832 A CN200910223832 A CN 200910223832A CN 101725103 A CN101725103 A CN 101725103A
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Abstract
The invention discloses a polymer cement concrete lamella which is characterized by comprising the following components in parts by weight: 5-40 parts of cement, 10-20 parts of polymer, 25-30 parts of anti-skidding aggregate,5-15 parts of filler, 0-2 parts of auxiliary agent, 0-3 parts of pigment and 20-25 parts of water. The invention has the advantages that the characteristics of high strength, strong cohesive force, good durability, long service life, and the like of the polymer cement material are fully utilized, the technical performance is reliable and the cost performance is high by forming a lamella on the road surface or the pavement surface.
Description
Technical field
The present invention relates to a kind of polymer cement concrete lamella, be specifically related to a kind of polymer cement concrete that is mixed and forms by polymer, cement, anti-skidding aggregate, filler, auxiliary agent, pigment, water, have the short characteristics of setting time.Be applicable to the preventive maintenance and the functional betterment works of asphalt concrete pavement, cement concrete pavement.
Background technology
1, asphalt concrete pavement and preventive maintenance thereof
Flexible pavement has comfortable, easy to maintenance, the advantages such as noise is low, easy regeneration of driving, in highway and urban road, use very extensive, occupy very big proportion in the road total kilometrage, the advanced road of building in recent years or reconstructing almost all is a flexible pavement.Flexible pavement can produce rut, crack, hole, hole, destruction such as loose gradually under the comprehensive function of various factors such as traffic load, air, sunlight, sleet, thereby influences the functional performance on road surface.Therefore, how to improve flexible pavement functional performance, prolong road application life, be the problem that vast road technical staff author pays close attention to.
In recent years, along with technology such as modified bitumen, natural asphalt, specialist additive, SMA flexible pavement, Superpave, Rubber-Asphalt Pavement, reflection crack control are applied on a large scale, and the transformation of quality control on construction idea, comparatively common in the past flexible pavement early disease phenomenon such as rut, hole, hole, crack etc. are solved preferably.
Under this background, bituminous pavement preventive maintenance work is put on agenda gradually.Bituminous pavement preventive maintenance work is meant on the road surface or paving structure intensity is enough, in a planned way take the maintenance measure with regard to road pavement when pavement behavior is fair, and then reach the purpose that keeps or improve road surface functional performance, prolongation service life of road surface and minimizing maintenance of surface expense.At present, phenomenons such as polishing non-skid property decay that the bituminous pavement preventive maintenance technology is primarily aimed at that table pitted skin in ageing of asphalt road is loose, the road table gathers materials, flexible pavement preventive maintenance technology commonly used comprises:
(1) asphalt-regenerating punishment
Asphalt pavement regeneration is as a kind of new maintenance technology, but road pavement directly sprays the oil content of additional asphalt component, recover the activity of aged asphalt, recover Pavement Performance, seal the road surface simultaneously and prevent to ooze under the moisture, reduce the adverse effect of oozing road pavement under the moisture.
(2) vaporific seal
Adopt plant equipment that the slow-setting emulsified asphalt of dilution is sprayed on the road surface equably, fine cracks and space with the sealing road surface prevent the loose of road surface, and it is aging to delay former road surface.
(3) little table place
Polymer modification mulseal, the mineral aggregate with grating, water and Admixture mixed and stirred by rational proportion and the former road surface that paves on, form laminate structure, can play the sealing flexible pavement, prevent ravelling, strengthen effect such as flexible pavement non-skid property.
(4) thin layer milling covering or directly covering
Flexible pavement is carried out milling to be handled the back overlay or directly overlays the asphalt surface course that is no more than 3cm, road improvement non-skid property at former road surfaces.
The subject matter of 2 cement concrete pavements/mat formation and exist
Cement concrete pavement has advantages such as rigidity is big, intensity is high, good endurance as pavement of road, tunnel pavement structure one of the type of mainly mating formation because of it, obtain using more widely in China.In recent years, along with the develop rapidly of China Higher level road construction, people had higher requirement to road traffic safety, comfortableness, environmental protection etc.The mat formation existence of following defective of cement concrete is subjected to the common concern of society:
(1) belong to the rigid pavement, the existence at a large amount of kerve indentations, shrinkage joint has reduced road-ability;
(2) the kerve indentation is anti-skidding, and the effect decay is rapid, non-skid property deficiency under the humid conditions, and travel safety is poor;
(3) cement concrete pavement has the higher reflective characteristic of dazzling the eyes, and road-ability is not good enough.
Therefore, at the defective of the cement concrete pavement/existence of mating formation, road technical staff author has carried out extensive work at technical elements such as anti-skidding, noise reduction, view improvement both at home and abroad.
Current, comparatively common scheme is for overlaying bituminous concrete in the cement concrete pavement/transformation process of mating formation, and this scheme can big limit improves travel safety, reduce road noise, reduce that pavement reflecting is dazzle the eyes etc.Engineering practice for many years shows that some engineerings are restricted by objective condition, forces the road technician to seek more suitable road and overlays renovation technique:
(1) cement concrete pavement transformation
Cement concrete pavement still occupies significant proportion in highway construction, road pavement directly overlays the bituminous concrete transformation, and the difficulty height is implemented in existence, traffic pressure is big, long in time limit, construction costs is high.
(2) the cement concrete bridge deck transformation of mating formation
Overlay the technical scheme of bituminous concrete, will increase bridge and conduct oneself with dignity, bring potential safety hazard, for guaranteeing that safety of structure often needs to carry out structural strengthening, and bring the construction costs of great number to structure.
(3) the tunnel cement concrete transformation of mating formation
The tunnel cement concrete is mated formation and is overlayed asphalt concrete pavement and can reduce headroom, and the part engineering often is difficult to satisfy the headroom designing requirement because headroom is lower.Even if absolute altitude meets the demands, after flexible pavement overlays, the technical security risk of also bringing tunnel asphalt to mat formation and burn synchronously.
3 preventive maintenances and renovation technique defect analysis
(1) bituminous pavement preventive maintenance technological deficiency
Current, the bituminous pavement preventive maintenance technology all is matrix with the petroleum asphalt material, will face the effect of various factors such as air, sunlight, sleet after the punishment, bituminous material ageing properties decaying phenomenon will exist, engineering experience shows, the asphalt-regenerating punishment possesses the effect in 2～5 years usually, and there is the non-skid property decay in the enforcement initial stage, has certain potential safety hazard; Vaporific seal only has 1 year left and right sides effect, and there is the non-skid property decay equally in the enforcement initial stage, has certain potential safety hazard; Little table place has the result of use in 6～8 years, and internal car noise is bigger between the operating period, and road-ability is not good, and the non-skid property decay is fast; Behind thin layer milling covering or the direct covering, flexible pavement will face aging, often just need implement preventive maintenance once more about 5 years.
(2) cement concrete pavement modification scheme
Overlay the technological deficiency of modification scheme at the cement concrete pavement flexible pavement, the CN1746427A patent of invention discloses a kind of epoxy thin layer antiskid layer road structure, what this patent adopted is a kind of bituminous epoxy class material cementing agent, admixture 0.075mm～0.6mm is mixed with the fine rock material (natural stone) of coupling agent as filler, mixing the back blade coating paves behind the road surfaces of removing surperficial laitance and dust, sprinkling the polishing value is 2～5mm particle diameter rubble greater than 60 particle diameters, solidify after 24 hours, with manually sweeping off the unnecessary wear-resisting rubble in surface.In general, this technical matters complexity, site operation planeness are difficult to control, hardening time is long, and traffic impact is big.
Utility model patent (200820059596.2) discloses the ultra-thin anti-skidding paving structure of a kind of modified epoxy resin, after former cement concrete pavement surfacing, at road surface machinery or manually smear a kind of epoxy resin as cementing agent, according to the anti-skidding aggregate of road Traffic Volume selection unlike material, different-grain diameter specification, this technology construction period is short, traffic impact is less relatively.
This two classes technology all adopts good epoxies of weather resistance or bituminous epoxy class material as tack coat, the construction costs height.
4 colored road surfaces
Colored road surface can change the present situation of road " non-black promptly white ", and the purpose of play auxiliary traffic administration, beautifying the environment can play to a certain extent and alleviate driver's visual fatigue, better provides safe driving to guarantee.
(1) at present domestic and international colored road surface has following several:
1) color asphalt road surface
The color asphalt road surface is to adopt Petropols or decolouring pitch as cementitious matter, colour gathers materials (common and road surface solid colour) as mineral aggregate, mix simultaneously and join a certain proportion of pigment, cementitious matter is heated into behind the stream plastic state and the heating uniform mixing of gathering materials, be transported to the job site, substantially routinely flexible pavement scheme roller-compaction forms colored surface layer, becomes the color asphalt road surface traditionally.
2) colorful slurry sealing layer
Behind Petropols after the emulsification or decolouring asphalt emulsification,, after mixing and stirring with aggregate chips, filler, pigment, press the method construction and flexible pavement top layer of slurry seal, the way of formation color function layer as cementitious matter.
3) color anti-skid road surface
Color anti-skid road surface is after adopting high polymer binder (epoxy resin, acrylic resin or other macromolecule binding materials) evenly to be coated on pitch, cement concrete pavement, the colored aggregate spreading that is about to certain particle diameter specification is on cementing agent, after treating that resin material solidifies, clear away unnecessary colored aggregate and promptly form colored road surface.This type of road surface is used for good construction depth, and wear-resisting colour gathers materials then provides outstanding non-skid property to the road surface, therefore, is commonly called " color anti-skid road surface ".
4) coating class colored road surface technology
Adopt spraying method that the macromolecule sprayed on material is coated road (cement concrete pavement, flexible pavement) surface equably, gloomy road table is become bright and clean, colored, the road surface of special popular texture or landscape effect is arranged.At present, sprayed on material mostly is epoxy resin or other macromolecular materials.
There is following technological deficiency in above-mentioned four kinds of colored road surfaces:
1) color asphalt road surface: adopt Petropols or decolouring pitch as cementitious matter, price is high, often needs to select colored aggregate for guaranteeing road color durability, and price is higher; Construction technology is identical with flexible pavement, but requirement is higher, often needs more protection and control measure in the work progress, can guarantee the road surface color and luster.
2) colorful slurry sealing layer: construction is simple, cost is cheap relatively, but because this layer is positioned at the road top layer, adopt Petropols or decolouring pitch as cementitious matter, be subjected to such environmental effects big, cementitious materials easily produces aging, the bonding capacity forfeiture, just produce skin effect phenomenon when using 3～5 years, durability is not good enough.
3) color anti-skid road surface: owing to overlay the antislip colour wearing layer at top, former road surface, need usually to adopt special epoxy resin or other macromolecular materials and colored aggregate, general thickness is 5mm, but the cost height, engineering is difficult to bear.
4) coating class colored road surface: the macromolecular material that coating is used faces the environmental factor aging action, and application life is short, along with phenomenons such as peeling usually take place the aging of coating material, and presentation quality is not good.
Be limited by the deficiency of present colored road surface technical and economic performance, at present, colored road surface is applied in the highway construction at home as yet on a large scale.
5 polymer modified cement-concretes
Cement concrete is as cementitious materials with the inorganic cement material.The plastic state cement concrete has certain fluidity, and closely knit for the inside concrete after guaranteeing to solidify, the general Vibration Technology that adopts is constructed when building the plastic state concrete, solidifies the back and forms stiff materials.Cement concrete has the convenience of drawing materials, the characteristics simple, that stiffness and strength is high of constructing.Yet cement concrete material also has self unsurmountable weakness, and the early solidification amount of contraction is big, the inner defective that easily produces, and it is poor, easy to crack to adapt to deformability, and the material adhesion stress is poor with organically combining.
After the appearance of polymer modified cement-concrete, make cement concrete material obtain new development.As cementitious materials, polymer modified cement-concrete bonds rubble and sand with polymer-modified cement.The anti-folding of the cement concrete after the polymer modification, impact strength all are improved largely, and have high anticorrosive, aging-resistant characteristics, and have the adaptable distinguishing feature of deformability, thereby have obtained using comparatively widely.
At present, mainly as concrete repair material, ornament materials, house earth surface paver, in recent years, the domestic researcher of having began used as the surface course structure polymer modified cement-concrete.
Summary of the invention
Main task of the present invention is to provide a kind of polymer cement concrete lamella, specifically be a kind of simple in structure, easy construction is applicable to the polymer cement concrete lamella of engineerings such as asphalt concrete pavement, cement concrete pavement preventive maintenance and functional improvement.
For resolving the problems referred to above, a kind of polymer cement concrete lamella of the present invention is characterized in that: described polymer cement concrete lamella is 5 by cement, polymer, anti-skidding aggregate, filler, auxiliary agent, pigment, water by mass ratio------20: 25---30: 5---15: 0---2: 0---3: 20---25 constitutes at 40: 10.
Further, described cement can be Portland cement, portland cement or sulphate aluminium cement.
Further, described polymer is one or more blend of benzene emulsion, methyl methacrylate, ethyl acrylate, butyl acrylate, styrene, ethane-acetic acid ethyenyl ester copolymer emulsion.
Further, described anti-skidding aggregate is finess such as glass, sandstone, basalt, aluminum ore, and maximum aggregate size is 0.6mm---2.36mm.
Further, described filler is a flyash, building sand, and 20 orders～60 purpose using rubber powder of waste tire, French chalk are 0 with mass ratio, and------mixed in 100: 0---15: 0---10, wherein the maximum particle diameter of building sand was identical with aggregate in 15: 20.
Further, described auxiliary agent is water reducing agent, defoamer and crosslinking agent, and described water reducing agent is 0～2% of a cement weight; Defoamer and used polymer are supporting, and consumption is 0%～4% of the solid consumption of polymer; Crosslinking agent and used polymer are supporting, and consumption is 0%～0.5% of the solid consumption of polymer.
Further, described pigment is iron oxide, chromium oxide class mineral-type pigment.
Further, described polymer cement concrete lamella making thickness is 2mm～5mm.
The invention has the advantages that: make full use of and bring into play characteristics such as polymer cement class strength of materials height, adhesion stress are strong, good endurance, long service life, on the road surface or the surface of mating formation form skim and mat formation, technical performance is reliable, ratio of performance to price height.
The specific embodiment
Embodiment 1
Select following mixing of materials to form polymer cement concrete and application:
| Material | Polymer (pressing solid content meter) | Cement | Anti-skidding aggregate | Filler | Auxiliary agent | Water |
| Material model or assembly situation | Methyl methacrylate: ethane-acetic acid ethyenyl ester latex powder=1: 2 | 52.5 early strong Portland cement | 0.8 the anti-skidding aggregate of～1.5mm aluminum ore | Flyash: the fine sand of the following specification of 0.6mm particle diameter=1: 9 | Calcium lignin sulfonate water depressor | Tap water |
| Consumption (mass percent) | Total amount is 15 (methyl methacrylate is 5, and ethane-acetic acid ethyenyl ester latex powder is 10) | ??25 | ??25 | 14.75 | ??0.25 | ??20 |
This polymer cement concrete preparation method is:
With 1 ton of polymer cement concrete is example, with 250 kilograms of early strong Portland cements, 250 kilograms in the anti-skidding aggregate of 0.8～1.5mm aluminum ore, 147.5 kilograms of fillers, after adopting the concrete mixer uniform mixing, add methyl methacrylate again: ethane-acetic acid ethyenyl ester latex powder mass ratio is 1: 2 200 kilograms in 150 kilograms in polymer, water, 2.5 kilograms of a calcium lignin sulfonate water depressor, after the uniform mixing, it is standby promptly to make polymer cement concrete.
The prepared cement polymer concrete performance of this example is as follows:
(1) compressive strength: 57.9MPa;
(2) rupture strength: 11.3MPa;
(3) adhesion stress: 3.51MPa.
Engineering is used:
Certain asphalt pavement of highway (heavy traffic) was open to traffic 4 years, road conditions are better, but asphalt surface course exposes aging pitted skin gradually, local highway section building stones polishing non-skid property is not good enough, adopts the thick above-mentioned road of 4mm to handle with polymer cement concrete, and concrete implementation step is:
(1) repairs producing damaged flexible pavement;
(2) adopt shot-blasting machine, dust catcher to remove road surface greasy dirt and dust;
(3) prepare polymer cement concrete as stated above, and adopt slurry seal machinery to scrape 4mm thick polymer cement concrete table place, shop deck, health got final product open to traffic after 8 hours.
Embodiment 2
Select following mixing of materials to form polymer cement concrete and application:
| Material | Polymer (pressing solid content meter) | Cement | Anti-skidding aggregate | Filler | Auxiliary agent | Water |
| Material model or assembly situation | Benzene emulsion: ethane-acetic acid ethyenyl ester copolymer emulsion=1: 1 | Portland cement (strength grade 52.5) | The anti-skidding aggregate of 1～2mm sandstone | 0.6mm the fine sand of the following specification of particle diameter | Naphthalene water reducer | Tap water |
| Consumption (mass ratio) | Total amount is 10 (two kinds of materials respectively are 5) | ??30 | ??25 | ??10 | ??0.15 | ??24.85 |
This polymer cement concrete preparation method is:
With 1 ton of polymer cement concrete is example, with 100 kilograms of the fine sand fillers of 300 kilograms of portland cements, 250 kilograms in the anti-skidding aggregate of 1～2mm sandstone, the following specification of 0.6mm particle diameter, after adopting the concrete mixer uniform mixing, add 50 kilograms of benzene emulsions, 50 kilograms of ethane-acetic acid ethyenyl ester copolymer emulsions, 248.5 kilograms in water, 1.5 kilograms of naphthalene water reducers again, after the uniform mixing, it is standby promptly to make polymer cement concrete.
The prepared cement polymer concrete performance of this example is as follows:
(1) compressive strength: 69.2MPa;
(2) rupture strength: 8.73MPa;
(3) adhesion stress: 2.85MPa.
Engineering is used:
Certain one-level highway is open to traffic for many years, and road conditions are better, but cement concrete pavement exposes the non-skid property decay gradually, and it is big that traffic impact is transformed in overlay, intends adopting 4mm thick polymer cement concrete lamella paving structure to handle.
Concrete implementation step is:
(1) damaged cement concrete plate is repaired, levelling to producing;
(2) adopt shot-blasting machine, dust catcher to remove cement concrete plate surface and oil contaminant and dust;
(3) prepare polymer cement concrete as stated above, and adopt the slurry seal machinery 4mm thick polymer cement concrete table place deck that paves, health got final product open to traffic after 5 hours.
Embodiment 3
Select following mixing of materials to form polymer cement concrete:
| Material | Polymer (pressing solid content meter) | Cement | Anti-skidding aggregate | Filler | Auxiliary agent | Pigment | Water |
| Material model or assembly situation | Methyl methacrylate: butyl acrylate: styrene=3: 1: 1 | Sulphur aluminic acid cement salt cement (strength grade 52.5) | 0.8 the anti-skidding aggregate of～1.5mm glass particle | 0.6mm the fine sand of the following specification of particle diameter | Naphthalene water reducer/ethylene glycol dimethacrylate | Iron oxide red | Tap water |
| Consumption (mass percent) | Total amount is 15, and wherein methyl methacrylate is 9, remains two kinds of materials and is respectively 3. | ??20 | ??28 | ??14.82 | (0.18 wherein naphthalene water reducer is 0.1, and ethylene glycol dimethacrylate is 0.08) | ??2 | ??20 |
This polymer cement concrete preparation method is:
With 1 ton of polymer cement concrete is example, with 200 kilograms of sulphur aluminic acid cement salt cement, 280 kilograms in the anti-skidding aggregate of 0.8～1.5mm glass particle, 148.2 kilograms of fillers, 20 kilograms of iron oxide reds, after adopting the concrete mixer uniform mixing, add 30 kilograms of butyl acrylates, 1 kilogram of naphthalene water reducer, 30 kilograms of styrene, 0.8 kilogram of ethylene glycol dimethacrylate, 140 kilograms in water again, the employing concrete mixer stirs, add 90 kilograms of methyl methacrylates, 60 kilograms in water at last, after the uniform mixing, it is standby promptly to make polymer cement concrete.
The prepared cement polymer concrete performance of this example is as follows:
(1) compressive strength: 54.7MPa;
(2) rupture strength: 9.71MPa;
(3) adhesion stress: 2.96MPa.
Engineering is used:
Certain city thoroughfare desire is implemented dedicated bus lanes (redness), former road surface is that the asphalt concrete pavement road conditions are good, existing problems show as mainly that construction depth is little, non-skid property is not good enough, intend adopting 3mm thick polymer cement concrete lamella paving structure to handle.
Concrete implementation step is:
(1) part having been produced damaged flexible pavement repairs;
(2) adopt shot-blasting machine, dust catcher to remove road surface greasy dirt and dust;
(3) polymer cement concrete of preparation as stated above, and adopt the slurry seal machinery 3mm thick polymer cement concrete table place deck that paves, health got final product open to traffic after 2 hours.
Claims (8)
1. a kind of polymer cement concrete lamella according to claim 1 is characterized in that: described polymer cement concrete lamella is 5 by cement, polymer, anti-skidding aggregate, filler, auxiliary agent, pigment, water by mass ratio------20: 25---30: 5---15: 0---2: 0---3: 20---25 constitutes at 40: 10.
2. polymer cement concrete lamella according to claim 1 is characterized in that: described cement can be Portland cement, portland cement or sulphate aluminium cement.
3. polymer cement concrete lamella according to claim 1 is characterized in that: described polymer is one or more blend of benzene emulsion, methyl methacrylate, ethyl acrylate, butyl acrylate, styrene, ethane-acetic acid ethyenyl ester copolymer emulsion.
4. polymer cement concrete lamella according to claim 1 is characterized in that: described anti-skidding aggregate is finess such as glass, sandstone, basalt, aluminum ore, and maximum aggregate size is 0.6mm---2.36mm.
5. polymer cement concrete lamella according to claim 1, it is characterized in that: described filler is a flyash, building sand, 20 orders～60 purpose using rubber powder of waste tire, French chalk are 0 with mass ratio, and------mixed in 100: 0---15: 0---10, wherein the maximum particle diameter of building sand was identical with aggregate in 15: 20.
6. polymer cement concrete lamella according to claim 1 is characterized in that: described auxiliary agent is water reducing agent, defoamer and crosslinking agent, and described water reducing agent is 0～2% of a cement weight; Defoamer and used polymer are supporting, and consumption is 0%～4% of the solid consumption of polymer; Crosslinking agent and used polymer are supporting, and consumption is 0%～0.5% of the solid consumption of polymer.
7. polymer cement concrete lamella according to claim 1 is characterized in that: described pigment is iron oxide, chromium oxide class mineral-type pigment.
8. according to the described a kind of polymer cement concrete lamella of claim 1, it is characterized in that: it is 2mm～5mm that described polymer cement concrete lamella is made thickness.
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| CN101949123A (en) * | 2010-09-10 | 2011-01-19 | 钱卫胜 | Cement concrete pavement protection paving system for toll lanes |
| CN102219437A (en) * | 2011-05-11 | 2011-10-19 | 邓敬森 | Cement concrete material for rapid repairing of road and preparation method thereof |
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| CN101949123A (en) * | 2010-09-10 | 2011-01-19 | 钱卫胜 | Cement concrete pavement protection paving system for toll lanes |
| CN102219437A (en) * | 2011-05-11 | 2011-10-19 | 邓敬森 | Cement concrete material for rapid repairing of road and preparation method thereof |
| CN102219437B (en) * | 2011-05-11 | 2012-12-05 | 邓敬森 | Cement concrete material for rapid repairing of road and preparation method thereof |
| CN103319127A (en) * | 2013-06-14 | 2013-09-25 | 武汉理工大学 | Epoxy resin base speed-reducing spike material for road engineering and method for preparing epoxy resin base speed-reducing spike material |
| CN103319127B (en) * | 2013-06-14 | 2015-09-30 | 武汉理工大学 | A kind of road engineering epoxy resin-matrix deceleration railway spike material and preparation method thereof |
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