CN102839581A - High-viscosity modified asphalt thin layer road surface with assembled coil (plate) structure - Google Patents
High-viscosity modified asphalt thin layer road surface with assembled coil (plate) structure Download PDFInfo
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Abstract
The invention discloses a high-viscosity modified asphalt thin layer road surface for an assembled coil (plate) structure. A method for forming the high-viscosity modified asphalt thin layer road surface comprises the following steps of: preparing a substrate (non-woven geotextile), a cementing agent (high-viscosity modified asphalt), a reinforced material (glass fiber), rough aggregate (smashed stone), fine aggregate (sand and stone chips), a filler (mineral powder), a pigment (coloring matter) and an additive (viscosity depressant) according to the requirements of service environments such as hot regions, warm regions and cold regions; designing mixtures of different mixture ratios; paving non-woven geotextile serving as a substrate on a production line; paving a high-viscosity modified asphalt warmly-mixed mixture formed by stirring on the substrate; pressing into a coil (plate) road thin layer road surface by using a pressure machine; coiling coils into cylinders by adopting a cylindrical roller support; and packing plates in a supporting way. In the invention, the road asphalt thin layer road surface is integrated into industrial production and assembled construction, so that the high-viscosity modified asphalt thin layer road surface has the characteristics of high integration, quick construction, reliable quality, superior performance, saving in energy, environment friendliness, attractiveness, practicability, wide application and the like.
Description
Technical field
The invention belongs to the technical field that highway traffic infrastructure is built, be specifically related to the method for a kind of high-viscosity modified asphalt pavement surface structure and production and assembling, promptly a kind of high-viscosity modified asphalt road thin layer road surface of assembling volume (plate) equipment structure.
Background technology
Flexible pavement (claiming flexible pavement again) road system is made up of surface layer, basic unit, subbase, bed course, roadbed.Surface layer is directly to accept the deck that wheel load acts on repeatedly to be influenced with natural cause, is made up of the 1-3 layer, is respectively surface course, middle surface layer and following surface layer from top to bottom, or the upper layer of two-layer structure and following surface layer.The main effect of surface course provides an antiskid, smooth, wear-resisting and surface that noise is little.Surface course is provided with wear-resisting, the closely knit bitumen layer of antiskid according to instructions for use; In, down the main effect of surface layer is permanent deformation and the upwards reflection of control basic crack under the opposing hot conditions, should have good anti-water destruct ability simultaneously.In, down surface layer is selected suitable bituminous texture layer according to the grade of road, pitch thickness, weather conditions etc.The structure types of flexible pavement has on bituminous concrete, rubber asphalt concrete, hot asphalt rubble, asphalt chip, sand asphalt, pitch penetrated, the pitch mixes down the formula of passing through, bituminous surface treatment etc.The minimum thickness such as the table 1 of all kinds of decks of flexible pavement.
The minimum thickness list of all kinds of decks of table 1 flexible pavement
The asphalt surface course traditional construction technology is: use raw material such as cementitious matter (matrix pitch or modified bitumen), coarse aggregate (rubble), fine aggregate (natural sand, aggregate chips), inserts (breeze), additive; Stir the formation bituminous mixture through batching plant; Be transported to the scene by automobile; Pave with the paver layering, successively roll (first pressing, multiple press, final pressure) moulding through road roller again.
" the practical new technology of high-grade highway semi-rigid asphalt pavement " (People's Transportation Press; June calendar year 2001;) among the P149, mentioned ultra-thin surface layer and technical scheme thereof, summary is summarized as follows: the ultra-thin skin coat of road means that road covering thickness is in the asphaltum concrete cover-layer below 2.5 centimetres.Because it can fast and effeciently recover the road surface functional performance, cost is relatively low simultaneously, is superior to application life such as the top dressing on road surface etc., all the time, all is the big or middle scheme of repairing in the most frequently used road surface of American-European countries.In some areas of the U.S., on the old asphalt road even often adopt the cover as thin as a wafer about 1.25 centimetres.China is about to get into the peak period of old road face medium-capital overhauling, and under the situation that current asphalt price becomes to rising, adopting ultra-thin cover is trend of the times.
At present, the damaged situation of China's old road face is serious than American-European countries, will adopt heat technology of mixing and temperature to mix two kinds of schemes of technology usually in the face of the problem of more old road face inhomogeneities during asphalt overlay.When adopting heat to mix technology, ultra-thin cover cooling relatively is very fast, and the operating time that effectively paves is very short, is the road longitudinal crack of avoiding occurring making the people responsive, the cover pattern that China's road circle tendency adopts full width to pave.When adopting temperature to mix technology, temperature is mixed a layer construction joint and is more prone to, and is easy to framing and paves, and ensures effective enforcement of ultra-thin surface layer; Temperature is mixed construction temperature specific heat and is mixed low 40 deg.c, and the temperature decrease speed is slowed down below half of mixing for heat, for the time has been won in operations such as compacting; Temperature is mixed compound and is more suitable in manual operations, is particularly suitable for concentrating the sub-layer non-uniformity problems such as repairing of tackling the front and back discovery that paves.Warm mix asphalt technologies has at the thin overlay application item of China: in September, 2007,2.5 centimetres of UTAC-10 of Shanghai A4 speedway thin overlay; In November, 2007,2.5 centimetres of UTAC-10 of Hebei orpiment speedway thin overlay; In September, 2008,2.0 centimetres of UTAC-6.7 of the ultra-thin cover of the clear speedway of Jiangsu Province's tin, 2.5 centimetres of UTAC-10 or the like.
No matter be to adopt heat to mix technology; Still adopt temperature to mix technology; The cementitious matter of asphaltum concrete cover-layer usually adopts the bi tumenf orr oad (matrix pitch) of No. 70 or No. 90; Perhaps adopt independent modified bitumen (i.e. an amount of different polymer such as admixture SBS, SBR, rubber powder separately in matrix pitch can be improved the multiple performances such as high temperature resistance to flow, low temperature flexibility, elasticity of pitch from different angles).People such as Tan Yiqiu are in " performance optimization method of composite modified asphalt joint sealing material " (" highway communication science and technology " in January, 2012; The 29th volume; The 1st phase) point out in the literary composition: there is limitation in single modification; The overall performance of modified bitumen is promoted comprehensively, and composite modified asphalt is the trend of studying at present.The composite modified asphalt joint sealing material prescription of high resiliency, low temperature performance excellent is: rubber powder is 25%, and SBS is 5%, and SBR is 3%, and additive is 7%; The rubber powder volume is many more, and the modified bitumen viscosity is high more, and elasticity is big more; SBR can improve anti-shearing deformability of high temperature and low temperature cracking resistance ability in the pitch; Additive can be regulated the pliability of composite modified asphalt, also can play the effect of cosolvent.
People such as Tang Yingfei have summed up the classification and the applicability of gap-grouting material in " application of gap-grouting material in asphalt pavement repairing " literary composition, provided gap-grouting material application and development direction.Heat with pitch class gap-grouting material like No. 70 heated bitumens or ordinary hot pitch; Colod-application pitch class gap-grouting material such as composite modified asphalt joint sealing material; Or proprietary material class gap-grouting material is as being widely used in the area, Jiangsu from levelling organic siliconresin or resinae fluid sealant.
People such as Sun Xuewei show in " application of rubber asphalt stress absorbing layer in the tunnel cement pavement is transformed " (the 4th world's rubber asphalt conference collection of thesis) literary composition: rubber asphalt stress absorbing layer (AR-SAMI) is arranged between cement pavement and the asphaltum concrete cover-layer, is considered to a kind of technical measures of effective prevention asphalt pavement reflective cracking in recent years.It is a kind of flexible anti parting that the rubble layers of material spreading by rubber asphalt and certain grating forms; Thickness is about 1 centimetre, has stronger deformability, can improve the stress state of road structure effectively; Absorb the concentrated stress of location of cracks; Can stop the generation of reflection crack effectively, cohere between enhancement layer, reduce the surface peeling that overlays flexible pavement.
People such as Li Yuzhi are in " steel bridge face composite modified asphalt mixture mat formation pavement performance research " (" highway communication science and technology " in January, 2010; The 27th volume; The 3rd phase) digest shows in wanting: low, the anti-shearing deformability of the temperature sensitivity of composite modified asphalt is strong, the pavement performance of its compound all be improved significantly, especially the high temperature rutting resistance improves significantly; And economic benefit is considerable, is applicable to paving steel bridge deck.
Wang Shifeng in " drainage pavement is with the research and the application of high-viscosity modified asphalt " PPT (in March, 2010 16-18 day Expo drainage pavement forum), introduced high-viscosity modified asphalt at home, outer research, applicable cases (matrix pitch-rubber asphalt-composite modified asphalt-asphaltum with high viscosity) and drainage pavement be in the development of Japan.Direct putting type asphalt modifier with high viscosity RST and standard thereof.The high-viscosity modified asphalt standard.60 ℃ of viscosity of highway standard medium-high viscosity modified bitumen are respectively modified bitumen, matrix pitch 10 times, 100 times more than or equal to 20000Pa.S (have Lv Weimin to introduce in addition: 60 ℃ of viscosity of China Petrochemical Industry's high-viscosity modified asphalt are up to 121500 Pa.S).The sticking toughness of high-viscosity modified asphalt, toughness are 2 times of SBS modified bitumen.High-viscosity modified asphalt is the high resiliency fluid.High-viscosity modified asphalt is applied to drainage pavement and forms " many spaces dewatering and noise reduction flexible pavement worker method " acquisition Shanghai City city-level worker method, national worker's method.The cost of high-viscosity modified asphalt drainage pavement is lower than the SMA road surface.High-viscosity modified asphalt also is used for the water-proof tack coat of " changing black in vain " stress absorbing layer, road and bridge.The photo of the photo of the high-viscosity modified asphalt stress absorbing layer test specimen that shows among the PPT, high-viscosity modified asphalt compound test specimen-20 ℃ bend test all shows: the bending property of high-viscosity modified asphalt stress absorbing layer, high-viscosity modified asphalt thin layer compound very significantly.
Hao Zhenhua has set forth characteristics, the formation of its rerum natura, the evaluation of RST direct putting type performance of modified bitumen, the control of RST direct putting type modifier application quality of RST direct putting type asphalt modifier in " direct putting type modifier R ST uses and quality control ".
People such as Sun Yazhen are in " based on the asphalt concrete pavement cracking resistance of geosynthetics overlay " (" highway communication science and technology " in January, 2012; The 29th volume; The 1st phase) digest show in wanting " laying geosynthetics is the effective way of control reflection crack; can change the stress distribution of structure effectively, has reduced stress to a greater degree and has concentrated; The modulus of elasticity of best geotextiles overlay is 1000Mpa.”
People such as Liu Wei point out in " SBS modified emulsifying asphalt adhesion coating is as water-proof tack coat " literary composition: the cation-modified mulseal of engineering practice proof SBS is as water-proof tack coat, and result of use is better, and spilling the cloth amount, to be converted into pitch be 0.2-0.3kg/ ㎡.
Ling Tianqing has introduced in " research of Expressway Asphalt surface layer thin overlay maintenance technology " with modified emulsifying asphalt+E-glass fiber+rubble and has implemented the fiber reinforcement stress absorbing layer, and the consumption of E-glass fiber is 56.7g/m2-113.4g/ ㎡; Adopt SASOWAM to mix the thinner of SMA-10 as temperature, the glass fiber consumption of implementing warm-mixed asphalt SMA-10 thin overlay is 110kg/ ㎡.
Dong Wenlong has introduced exploitation and applicable cases that temperature is mixed the compact thin layer in " temperature is mixed the compact thin-bed technique ".Adopt temperature to mix technology, the most ripe compact type asphalt mixture is used for thin overlay, all technological operation temperature specific heats are mixed technology significantly descend (30-60 ℃).
Beijing Highways Department has put into effect " Beijing's Warm-Mix Bitumen Mixture pavement technique guide " in June, 2009.
Shanghai municipal engineering management board has edited and released " color asphalt pavement technique guide " in December, 2005.
Sun Zuwang has introduced functional road surfaces such as drainage road, noise reduction road surface, flame-retardant pavement, the road surface of opening ice, colored view road surface, elastic caoutchouc road surface, luminous indication road surface in " functional road surface with " green " build the road new technology "; Sticking layer oil spills the double-deck paving technique synchronously of cloth technology, bituminous mixture (three kinds of types: dual hopper mixture laying machine, the double-deck paver of two transfer car(buggy), tandem pave train) etc. " green " new technology of building the road synchronously in the bituminous mixture laying process.
Summary of the invention
The objective of the invention is to: the high-viscosity modified asphalt thin layer road surface that a kind of assembling volume (plate) equipment structure is provided; The pitch thin layer road surface that traditional scene is paved is integrated into batch production production, fabricated construction; Make pitch cover road realize batch production, integrated, standardization, facilitation production, have integrated level height, construction fast, reliable in quality, function admirable, energy-conserving and environment-protective, distinguishing feature such as both artistic and practical, of many uses.
Technical solution of the present invention is that the batch production production on this thin layer road surface may further comprise the steps:
1, chooses structural meterials: base material (non-woven geotextile)+cementitious matter (high-viscosity modified asphalt)+enhancing material (glass fiber)+coarse aggregate (rubble)+fine aggregate (sand and aggregate chips)+filler (breeze)+pigment (colorant)+additive (thinner); Cementitious matter is selected for use No. 70 or No. 90 matrix pitch admixture high viscosity property-modifying additive HVA (highway academy of Ministry of Communications), or a kind of among the admixture HVB (Hubei state wound), TPS (Japan has much construction), PR (France), Duroflex (Germany), RST (PVG construction) direct putting type modifier; Strengthen and expect that selecting glass fiber, specification for use is the E-glass fiber; Coarse aggregate is selected basalt for use, and specification is 4.75-9.5mm; Fine aggregate is selected limestone for use, and specification is 0-4.75mm; Filler adopts hydrophobicity building stones, dry, clean limestone breeze; Pigment is selected the iron oxide red series inorganic pigment for use; Thinner is selected Frawarm (method temperature) or SASOWAM organic additive for use;
2, proportion design: according to hot-zone, warm area, the environment for use requirement of cold district, the compound production that designs different proportionings respectively forms the assembling road thin layer road surface of coiled material type structure or sheet profile structure; The high-viscosity modified asphalt compound is according to hot-mix asphalt mixture close-graded continuous grading bituminous concrete in People's Republic of China's industry standard " asphalt highway construction technique normalizing " (JTG F40-2004); Select particulate formula AC-13, AC-10 and sand grains formula AC-5 type mineral aggregate gradation for use; Adopt the Marshall Test method to carry out proportion design, mix compound through the high-viscosity modified asphalt temperature of mixing and stirring formation; Strengthening material glass fiber consumption is 110kg/ ㎡; Pigment (iron oxide red series inorganic pigment) consumption is the 1%-3% of bituminous mixture weight; The consumption of thinner Frawarm (method temperature) is a bituminous mixture medium pitch consumption 3%, and the consumption of thinner SASOWAM is bituminous mixture weight (2.5-5) %;
3, the batch production production on road thin layer road surface: on the plant produced streamline; Lay non-woven geotextile earlier as base material; The process of the step 2 that on base material, paves is mixed and stirred the high-viscosity modified asphalt temperature of formation and is mixed compound, re-uses pressing machine and is pressed into coiled material type or sheet profile road thin layer road surface; Its single width width is that 50 centimetres-700 centimetres, length are that 200 meters-600 meters, thickness are 1.0-3.0 centimetres;
4, packing and transportation: coiled material type road thin layer road surface adopts the cylindrical roller support to be curled into the barrel mast packing, and pack with single-piece or many support formulas by the different mining of its specification on sheet profile road thin layer road surface.
Wherein, in the manufacturing process on road thin layer road surface, on the top layer on the thin layer road surface of the high-viscosity modified asphalt compound of black, set up white or yellow roadmarking as required, or produce the coloured prod of different color, or produce parquets pattern product.
Wherein, in the manufacturing process on road thin layer road surface, preset as required road perception components and parts such as induction coil, luminous body etc. in the high-viscosity modified asphalt compound.
Cold process assembling or the assembling of hot method are adopted in road thin layer road surface; Wherein, The cold process assembling of road thin overlay coiled material product: be applicable to that at substratum be surface layer in the pitch after old road milling or road surface hacking are handled, the enterprising luggage of surface layer is joined down; Use has the roller support exclusive trail car that sprays the cationic emulsified bitumen mechanical device road thin overlay is dragged to the scene; Cationic emulsified bitumen is sprayed as asphalt tack coat in the limit, and on-the-spot positioning and rolling installation is carried out on the limit, and it is fixing immediately following rolling thereafter to re-use rubber-tyred roller; Carry out joint treatment synchronously or after a while, select colod-application pitch class gap-grouting material such as composite modified asphalt joint sealing material for use, proprietary material class gap-grouting material is as from levelling organic siliconresin or resinae fluid sealant.
Wherein, The hot method assembling of road thin layer road surface coiled material product: be applicable in the hot-mix asphalt mixture that substratum is accomplished for the compacting that just paved surface layer or assembling in time on the surface layer down; The roller support exclusive trail car that use has heat spray pitch or rubber asphalt mechanical device is dragged to the scene with the road thin overlay; Limit heat spray pitch or rubber asphalt are as asphalt tack coat, and on-the-spot positioning and rolling installation is carried out on the limit, and it is fixing immediately following rolling thereafter to re-use rubber-tyred roller; Carry out joint treatment synchronously, select for use heat with pitch class gap-grouting material like No. 70 heated bitumens or ordinary hot pitch, hot rubber asphalt.
Wherein, The cold process assembling of road thin layer road slab section product: be applicable to substratum to be the milling repairing of the local disease on old road; Or join at city square, urban road sidewalk, the enterprising luggage in school playground; Adopt artificial laying method to install, promptly the limit is coated with and spills the cationic emulsified bitumen tack coat, and on-the-spot location and installation road thin overlay sheet material is carried out on the limit.Highway communication can directly be opened after repairing in the old road, utilizes traffic load to be fixed and compresses.On city square, urban road sidewalk, school playground, also can use rubber-tyred roller to closely follow as one sees fit and further roll thereafter firmly; Carry out joint treatment synchronously or after a while, select colod-application pitch class gap-grouting material such as composite modified asphalt joint sealing material for use, proprietary material class gap-grouting material is as from levelling organic siliconresin or resinae fluid sealant.
Following according to finding the web length approximate formula in " Hundred Thousand Whys " book: in L=π (R2-r2)/d formula: the L-web length; The R-exradius; Pore radius in the r-; D-coiled material thickness; As when selecting r=50 centimetre, R=150 centimetre, when d=1 centimetre, L=628 rice then; As when selecting r=50 centimetre, R=150 centimetre, when d=2 centimetre, L=314 rice then; As when selecting r=50 centimetre, R=150 centimetre, when d=2.5 centimetre, L=251 rice then; As when selecting r=50 centimetre, R=150 centimetre, when d=3 centimetre, L=209 rice then; When the single width width is that 3.5 meters coiled material is packaged into when being 3 meters cylinders for external diameter, its deadweight then is 0.03 meter * 1970 kilograms per cubic meter of 3.5 meters * of 209 meters *=43.2 tons; This shows that the packing of pitch thin overlay coiled material product all is feasible with transportation.
The present invention has the following advantages:
1, volume (plate) equipment structure: usually the road scene thin layer road surface thickness that paves is 2.0-4.0 centimetre; Web construction thickness of the present invention is 1.0-3.0 centimetres; Plate construction thickness can be selected according to actual needs, large-scale production in enormous quantities, or personalization is made to measure according to actual needs.
2, integrated level is high: make preset induction road surface like road perception components and parts such as induction coils; Make subsidiary white (yellow) roadmarking, or the fancy road surface of colored parquets pattern, fluorescence road surface (resin granular material, glass crystal, light emitting diode are as luminous body) made; Make magnetic guiding road surface; Make the elasticity road surface, make the water retention road surface, or the road surface that gathers multi-function in integral whole.
3, construction fast: on-site construction processes is few, and technology is simple, and assembling speed is quick.
4, reliable in quality: the thin layer road surface comes from the integrated production of batch production streamline, compares with traditional scene bituminous mixture that paves, and its quality can be strict controlled; The thin layer road surface adopt have the viscosity height, high-viscosity modified asphalt that good springiness, ageing resistace are strong is as the cementitious materials of deck, makes this structure have good pavement performance.
5, function admirable: have good anti-water damage property, high temperature performance, anti-fatigue performance, noise reduction sound performance, can also prevent and treat the reflection crack of roadbase effectively.
6, energy-conserving and environment-protective: bituminous mixture is batch production production and moulding; Can direct cloth compression moulding after bituminous mixture mixes and stirs, need not long-distance transport, it mixes and stirs, the temperature of cloth and moulding adopts the production temperature of Warm-Mix Bitumen Mixture to control; Compare with hot-mix asphalt mixture; Mix and stir and forming temperature can reduce about 30-60 deg.c, not only practice thrift energy consumption, and reduce discharge of harmful gases.
7, site assembly formula construction: on-the-spot required construction machinery is few; And the discharging that surrounding enviroment are caused less, pollute for a short time, used machinery is to problems such as noxious gas emission that environment caused and noise pollution when also having reduced simultaneously bituminous mixture laying, the compacting of traditional asphalt skin coat.
8, of many uses: as to be applicable to that highway, urban road, city square, school playground etc. are newly-built, reconstruction, maintenance, repairing and decorative engineering.
The specific embodiment
Further specify technical solution of the present invention below in conjunction with specific embodiment, these embodiment can not be interpreted as it is the restriction to technical scheme.
Embodiment 1: produce the road thin overlay according to the following steps batch production
1, chooses structural meterials: base material (non-woven geotextile)+cementitious matter (high-viscosity modified asphalt)+enhancing material (glass fiber)+coarse aggregate (rubble)+fine aggregate (sand and aggregate chips)+filler (breeze)+additive (thinner); Cementitious matter is selected No. 70 matrix pitch admixture high viscosity property-modifying additive HVA (highway academy of Ministry of Communications) for use, strengthens to expect that selecting glass fiber, specification for use is the E-glass fiber; Coarse aggregate is selected basalt for use, and specification is 4.75-9.5mm; Fine aggregate is selected limestone for use, and specification is 0-4.75mm; Filler adopts hydrophobicity building stones, dry, clean limestone breeze; Pigment is selected the iron oxide red inorganic pigment for use; Thinner is selected Frawarm (method temperature) organic additive for use;
2, proportion design: according to hot-zone environment for use requirement, the proportioning of design compound is also produced the assembling road thin layer road surface that forms coiled material type structure; The high-viscosity modified asphalt compound is according to hot-mix asphalt mixture close-graded continuous grading bituminous concrete in People's Republic of China's industry standard " asphalt highway construction technique normalizing " (JTG F40-2004); Select particulate formula AC-10 type mineral aggregate gradation for use; Adopt the Marshall Test method to carry out proportion design, mix compound through the high-viscosity modified asphalt temperature of mixing and stirring formation; Strengthening material glass fiber consumption is 120kg/ ㎡; Pigment iron oxide red inorganic pigment consumption is 2% of a bituminous mixture weight; The consumption of thinner Frawarm (method temperature) is 3.0% of a bituminous mixture medium pitch consumption;
3, the production on road thin layer road surface: on the plant produced streamline; Lay non-woven geotextile earlier as base material; The process of the step 2 that on base material, paves is mixed and stirred the high-viscosity modified asphalt temperature of formation and is mixed compound, re-uses pressing machine and is pressed into coiled material type road thin layer road surface; 75 centimetres of single width width, 100 meters of length, 2.5 centimetres of thickness, or make to measure according to actual needs; Wherein, in the manufacturing process on road thin layer road surface, the high-viscosity modified asphalt temperature is mixed the coiled material that compound is produced rust;
4, packing and transportation: coiled material type road thin layer road surface adopts the cylindrical roller support to be curled into the barrel mast packing.
The cold process assembling on road thin layer coiled material road surface: it is that the enterprising luggage of surface layer is joined under the pitch after road surface, old road hacking is handled that certain engineering is used at substratum; Use has the roller support exclusive trail car that sprays the cationic emulsified bitumen mechanical device road thin layer road surface is dragged to the scene; Cationic emulsified bitumen is sprayed as asphalt tack coat in the limit; On-the-spot positioning and rolling installation is carried out on the limit, and it is firm immediately following rolling thereafter to re-use rubber-tyred roller; Carry out joint treatment synchronously or after a while, select colod-application pitch class gap-grouting material composite modified asphalt joint sealing material for use.
Embodiment 2: produce road thin layer road surface according to the following steps batch production
1, chooses structural meterials: base material (non-woven geotextile)+cementitious matter (high-viscosity modified asphalt)+enhancing material (glass fiber)+coarse aggregate (rubble)+fine aggregate (sand and aggregate chips)+filler (breeze)+pigment (colorant)+additive (thinner); Cementitious matter is selected No. 90 matrix pitch admixture RST (PVG construction) direct putting type modifier for use; Strengthen and expect that selecting glass fiber, specification for use is the E-glass fiber; Coarse aggregate is selected basalt for use, and specification is 4.75-9.5mm; Fine aggregate is selected limestone for use, and specification is 0-4.75mm; Filler adopts hydrophobicity building stones, dry, clean limestone breeze; Thinner is selected the SASOWAM organic additive for use;
2, proportion design: according to the requirement of warm area environment for use, the proportioning of design compound, and produce the assembling road thin layer cover road surface that forms coiled material type structure; The high-viscosity modified asphalt compound is according to hot-mix asphalt mixture close-graded continuous grading bituminous concrete in People's Republic of China's industry standard " asphalt highway construction technique normalizing " (JTG F40-2004); Select particulate formula AC-10 type mineral aggregate gradation for use; Adopt the Marshall Test method to carry out proportion design, mix compound through the high-viscosity modified asphalt temperature of mixing and stirring formation; Strengthening material glass fiber consumption is 110kg/ ㎡; The consumption of thinner SASOWAM is a bituminous mixture weight 3.75%;
3, the production on road thin layer road surface: on the plant produced streamline; Lay non-woven geotextile earlier as base material; The process of the step 2 that on base material, paves is mixed and stirred the high-viscosity modified asphalt temperature of formation and is mixed compound, re-uses pressing machine and is pressed into coiled material type road thin layer road surface; 350 centimetres of single width width, 150 meters of length, 2.0 centimetres of thickness, or make to measure according to actual needs; Wherein, in the manufacturing process on road thin layer road surface, the high-viscosity modified asphalt temperature is mixed compound and is produced the black coiled material that has white or yellow roadmarking;
4, packing and transportation: coiled material type road thin layer road surface adopts the cylindrical roller support to be curled into the barrel mast packing.
The hot method assembling on road thin layer coiled material road surface: certain engineering is used for assembling in time on surface layer under the hot-mix asphalt mixture that substratum is accomplished for the compacting that just paves; The roller support exclusive trail car that use has heat spray rubber asphalt mechanical device is dragged to the scene with road thin layer road surface; Limit heat spray rubber asphalt is as asphalt tack coat; On-the-spot positioning and rolling installation is carried out on the limit, and it is firm immediately following rolling thereafter to re-use rubber-tyred roller; Carry out joint treatment synchronously, select for use pitch class gap-grouting material like No. 70 heated bitumens or hot rubber asphalt.
Embodiment 3: produce road thin layer road surface according to the following steps batch production
1, chooses structural meterials: base material (non-woven geotextile)+cementitious matter (high-viscosity modified asphalt)+enhancing material (glass fiber)+coarse aggregate (rubble)+fine aggregate (sand and aggregate chips)+filler (breeze)+pigment (colorant)+additive (thinner); Cementitious matter is selected No. 70 base rubber pitch admixture high viscosity property-modifying additive HVB (Hubei state wound) for use; Strengthen and expect that selecting glass fiber, specification for use is the E-glass fiber; Coarse aggregate is selected basalt for use, and specification is 4.75-13.2mm; Fine aggregate is selected limestone for use, and specification is 0-4.75mm; Filler adopts hydrophobicity building stones, dry, clean limestone breeze; Pigment is selected the chrome oxide green inorganic pigment for use; Thinner is selected the SASOWAM organic additive for use.
2, proportion design: according to the requirement of warm area environment for use, the proportioning of design compound, and produce the assembling road thin layer road surface that forms the sheet profile structure; The high-viscosity modified asphalt compound according to People's Republic of China's industry standard " asphalt highway construction technique normalizing " (JTGF40-2004) in hot-mix asphalt mixture close-graded continuous grading bituminous concrete; Select particulate formula AC-13 type mineral aggregate gradation for use; Adopt the Marshall Test method to carry out proportion design, mix compound through the high-viscosity modified asphalt temperature of mixing and stirring formation; Strengthening material glass fiber consumption is 130kg/ ㎡; Pigment chrome oxide green inorganic pigment consumption is 1% of a bituminous mixture weight; The consumption of thinner SASOWAM is a bituminous mixture weight 4.0%;
3, the production on road thin layer road surface: on the plant produced streamline; In mould, lay non-woven geotextile earlier as base material; On base material, pave and mix compound, re-use pressing machine and be pressed into sheet profile road thin layer road surface section bar through the high-viscosity modified asphalt temperature of mixing and stirring formation of step 2; Single-piece is of a size of 3.0 centimetres of 100 centimetres of * thickness of 100 centimetres of *, or makes to measure according to actual needs; Wherein, In the manufacturing process on road thin layer road surface; Preset road perception components and parts such as induction coil (being used for urban road level crossing signal lamp place) or luminous body in the high-viscosity modified asphalt temperature is mixed the compound section bar (be used for zebra crossing etc. locate), the high-viscosity modified asphalt compound is produced the sheet material of chrome green look;
4, packing and transportation: sheet profile road thin layer road surface section bar product adopts single-piece or many support formula packings.
The cold process assembling on road thin layer sheet material road surface: it is the milling repairing (another engineering is joined at city square, urban road sidewalk, the enterprising luggage in school playground) of the local disease on old road that certain engineering is used for substratum; Adopt artificial laying method to install; Be that the limit is coated with and spills the cationic emulsified bitumen tack coat, on-the-spot location and installation road thin layer road surface sheet material is carried out on the limit; Highway communication can directly be opened after repairing in the old road, utilizes traffic load to be fixed and compresses; On city square, urban road sidewalk, school playground, also can use rubber-tyred roller to closely follow as one sees fit and further roll thereafter firmly; Carry out joint treatment synchronously or after a while, select colod-application pitch class gap-grouting material such as composite modified asphalt joint sealing material for use, or proprietary material class gap-grouting material is as from levelling organic siliconresin or resinae fluid sealant.
Claims (3)
1. assembling is rolled up the high-viscosity modified asphalt thin layer road surface of (plate) equipment structure, it is characterized in that the batch production production on its this road thin layer road surface may further comprise the steps:
(1) chooses structural meterials: base material (non-woven geotextile)+cementitious matter (high-viscosity modified asphalt)+enhancing material (glass fiber)+coarse aggregate (rubble)+fine aggregate (sand and aggregate chips)+filler (breeze)+pigment (colorant)+additive (thinner); Cementitious matter is selected for use No. 70 or No. 90 matrix pitch admixture high viscosity property-modifying additive HVA (highway academy of Ministry of Communications), or a kind of among the admixture HVB (Hubei state wound), TPS (Japan has much construction), PR (France), Duroflex (Germany), RST (PVG construction) direct putting type modifier; Strengthen and expect that selecting glass fiber, specification for use is the E-glass fiber; Coarse aggregate is selected basalt for use, and specification is 4.75-9.5mm or 4.75-13.2mm; Fine aggregate is selected limestone for use, and specification is 0-4.75mm; Filler adopts hydrophobicity building stones, dry, clean limestone breeze; Pigment is selected iron oxide red (iron oxide yellow, chrome green) series inorganic pigment for use; Thinner is selected Frawarm (method temperature) or SASOWAM organic additive for use;
(2) proportion design: according to hot-zone, warm area, the environment for use requirement of cold district, the compound production that designs different proportionings respectively forms the assembling road thin layer road surface of volume (plate) material type structure; The high-viscosity modified asphalt compound is according to hot-mix asphalt mixture close-graded continuous grading bituminous concrete in People's Republic of China's industry standard " asphalt highway construction technique normalizing " (JTG F40-2004); Select particulate formula AC-13, AC-10 and sand grains formula AC-5 type mineral aggregate gradation for use; Adopt the Marshall Test method to carry out proportion design, mix compound through the high-viscosity modified asphalt temperature of mixing and stirring formation; Strengthening material glass fiber consumption is 110-130kg/ ㎡; Pigment iron oxide red (chrome green, iron oxide yellow) series inorganic pigment consumption is the 1%-3% of bituminous mixture weight; The consumption of thinner Frawarm (method temperature) is a bituminous mixture medium pitch consumption 3%, and the consumption of thinner SASOWAM is bituminous mixture weight (2.5-5) %;
(3) batch production production: on the plant produced streamline or in mould; Lay non-woven geotextile earlier as base material; The process of the step 2 that on base material, paves is mixed and stirred the high viscosity modified asphalt mixture of formation, re-uses pressing machine compacting rolling (plate) material type road thin layer road surface; The single width width is that 50 centimetres-700 centimetres, length are that 200 meters-600 meters, thickness are 1.0-3.0 centimetres, or single-piece sheet material is of a size of 1.0-5.0 centimetres of 100 centimetres of * of 100 centimetres of * etc., or makes to measure according to actual needs;
(4) packing and transportation: coiled material type road thin layer road surface adopts the cylindrical roller support to be curled into the barrel mast packing; Single-piece or many support formula packings are adopted in sheet profile road thin layer road surface.
2. the high-viscosity modified asphalt thin layer road surface of assembling volume (plate) equipment structure according to claim 1; It is characterized in that: wherein; In the manufacturing process on road thin layer road surface; Mix compound coiled material surface in black high-viscosity modified asphalt temperature and set up white or yellow roadmarking, also can with volume (plate) material production be colour or the parquets pattern.
3. the high-viscosity modified asphalt road thin layer road surface of assembling volume (plate) equipment structure according to claim 1 is characterized in that: wherein, in the manufacturing process on road thin layer road surface, the high-viscosity modified asphalt temperature is mixed preset road perception components and parts in the compound.
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| CN113062164A (en) * | 2021-03-05 | 2021-07-02 | 武汉理工大学 | Double-layer composite full-prefabricated assembly type pavement and construction method |
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