CN209636583U - A kind of pitch composite seal coat for road in airport - Google Patents

Abstract

The utility model discloses a kind of pitch composite seal coats for road in airport, including the modified emulsifying asphalt synchronous surface dressing being layed on cement stabilized macadam base, and it is layed in the MS-2 type micro-surface area transition zone on modified emulsifying asphalt synchronous surface dressing, and the MS-2 type micro-surface area upper epidermis being layed on MS-2 type micro-surface area transition zone;The pitch composite seal coat for being used for road in airport can be avoided plat-bottom escape, while can also improve concrete road surface anti-permeability performance, flushing resistance, improve road face durability.

Description

A kind of pitch composite seal coat for road in airport

Technical field

The utility model is specifically related to a kind of pitch composite seal coat for road in airport.

Background technique

Since the positions such as civil airport runway, parallel taxiway and fast slideway are subjected to heavy traffic, high-intensitive load for a long time Repeated action, deicing level ground position is for a long time by the corrosion impact of deicing liquid, the phenomenon that Yi Fasheng plat-bottom escape, and is difficult to repair.

Caused by the reason of coming to nothing may be many factors, wherein base soak for a long time, top concreting when slurries Lead to concrete temperature strain failure by shear substructure, the failure bottom substrate immersion of cementation of fissures material and boat with bottom substrate consolidation Negative pressure causes edges of boards base purt mud etc. to be the common cause for causing base's destruction to be come to nothing generally believed in the industry when pocket slips over.

When civil airport cement concrete road surface uses cement stabilized macadam base, the type of interlayer of original adoption is stone It considers sealing to be worth doing, mainly uses geomembrane later, Practical Project effect does not reach expected.Current major design scheme is setting Geotextiles, or even it is not provided with middle layer (non-critical areas)；In recent engineering design intend consider setting 1 thickness degree 2cm with Upper particulate formula (sand grains formula) bituminous concrete, or (single layer is same for asphaltic base top dressing layer of the setting thickness in monolayer no more than 1cm Walk crushed stone sealing/slurry seal/micro-surface area).The Practical Project effect of different type middle layer is summarized as follows:

(1) middle layer or setting screening seal coat are not provided between cement treated material and cement sheeting.Both do not have isolation Effect, can not also improve the flushing resistance of cement treated material, substantially be designed to abandon, civil aviaton is in the non-pass in movement area at present Cement road face is directly cast in the design scheme on cement treated material and should avoided by key range.

(2) geomembrane is set between cement treated material and cement sheeting.Engineering practice shows that geomembrane is arranged imitates in isolation Good effect is played in terms of fruit, but due to geotechnological film surface excessively " smooth ", for cement pavement slab block and cutting optimal Interlayer effect of contraction it is too weak, cause plate temperature day (round the clock) variation under the influence of dilatation amount be more than expected design, Even occur the phenomenon that plate " overall movement " under extreme case, and then induces some more serious engineering diseases.Therefore the people Boat substantially no longer uses this technical solution after the large airport engineering of East China.

(3) geotextiles are set between cement treated material and cement sheeting.All there is large area in setting geotextiles and geomembrane When construction, due to geotextiles and geomembrane can not completely with the construction technology problem of cement treated material surface close " fitting ", and In cement sheeting casting process, since heavy mechanical equipment (mainly concrete truck, material distributing machine etc.) is in geotextiles and geotechnique Film surface when driving, can cause local failure to geotextiles and geomembrane.The good geotextiles of making can be sent out well first It waves " isolation features ", and its surface can form the interface with the larger coefficient of friction resistance with cement concrete, be not in plate The excessive problem of block dilatation amount.For geotextiles are with respect to asphaltic base sealing, project cost is lower, this is also that civil aviaton is current One of the reason of considering setting geotextiles in the design.

But the geotextiles under cement sheeting are set and repeat to make in cement sheeting temperature contraction stress and the long-term of warping stress Under, it is easy to the phenomenon that destroying as plate is mobile occur.

Utility model content

The technical problem to be solved by the present invention is to provide one kind can be avoided plat-bottom escape, while can also improve mixed Solidifying soil surface anti-permeability performance, flushing resistance, the pitch composite seal coat for road in airport for improving road face durability.

To solve the above problems, the utility model adopts the following technical solution:

A kind of pitch composite seal coat for road in airport, includes cement stabilized macadam base, and to be layed in cement steady Determine the modified emulsifying asphalt synchronous surface dressing on crushed rock base course, and is layed on modified emulsifying asphalt synchronous surface dressing MS-2 type micro-surface area transition zone, and the MS-2 type micro-surface area upper epidermis being layed on MS-2 type micro-surface area transition zone, and be layed in Portland Cement Concrete Surface Course on MS-2 type micro-surface area upper epidermis.

The utility model has the following beneficial effects: improving concrete road surface anti-permeability performance, abrasion resistance to solve plat-bottom escape Can, improve road face durability, using the arrangement and method for construction of asphaltic base composite seal coat, asphaltic base composite seal coat design overall thickness be 17 ~ 22mm divides three layers of implementation, the asphaltic base combined type sealing scheme of sub-layer, transition zone and upper epidermis from the bottom to top.

Detailed description of the invention

Fig. 1 is a kind of structure combination diagram of the asphaltic base combined type sealing for road in airport of the utility model；

Fig. 2 is that a kind of sub-layer of the asphaltic base combined type sealing construction method for road in airport of the utility model is main Construction schematic diagram；

Fig. 3 is the utility model a kind of upper epidermis and mistake of the asphaltic base combined type sealing construction method for road in airport Layer is crossed mainly to construct schematic diagram.

Specific embodiment

Specific embodiment of the present utility model is described in further detail below in conjunction with attached drawing, so that the utility model technology Scheme is more readily understood and grasps.

Refering to fig. 1 shown in -3, a kind of pitch composite seal coat for road in airport, includes cement stabilized macadam base 6, And it is layed in the modified emulsifying asphalt synchronous surface dressing 8 on cement stabilized macadam base 6, and to be layed in modified emulsifying asphalt same Walk the MS-2 type micro-surface area transition zone 7 on crushed stone sealing 8, and the micro- table of MS-2 type being layed on MS-2 type micro-surface area transition zone 7 Locate upper epidermis 5, and the Portland Cement Concrete Surface Course 4 being layed on MS-2 type micro-surface area upper epidermis 5.

A kind of pitch composite seal coat construction method for road in airport, using sub-layer 1, transition zone 2 and upper epidermis 3 Asphaltic base carries out combined type sealing, comprising the following steps:

1) sub-layer is constructed

(1) shovel dress building stones: the building stones for being packed into hopper should maintain an equal level with the height of hopper left baffle, prevent because expecting excessively to spill It falls；

(2) emulsified asphalt: should check oil pick-up tube and its connector whether good seal, forbid emulsified asphalt to splash；

(3) it demarcates: the temperature of emulsified asphalt being heated and is stablized between 60 DEG C ~ 80 DEG C；It is on valve, is made at its In pipeline recurrent state, spray bars emulsified asphalt is uniformly mixed with asphalt tank internal emulsification pitch, in asphalt binder stability controller Emulsified asphalt spread quantity and travel speed are demarcated, vehicular velocity setting is 30 ~ 60m/min；

(4) spread paves: setting emulsified asphalt and the spraying altitude and dosage gathered materials open building stones dispenser and pitch spray Spill bar；During spread, left and right spray bars are adjusted at any time, guarantee the integrality of seam；It should be met the following requirements when spread: envelope In layer work progress, chip sealer wants smooth ride, at the uniform velocity；Construct the first width when, should gather materials on spread device in side plus baffle, Prevent building stones from splashing, construct last width when, use same method in the other side, among spread when width, to keep unilateral pitch Spray width than building stones spray width more than 8 ~ 10cm；

(5) defect repair: when discovery sprinkling emulsified asphalt has blank, it should carry out manually mending in time and spill；When there is emulsified asphalt It should be struck off when accumulation；When emulsified asphalt sprinkling ribbon occurs with the spreading that gathers materials, atomizer and bin gate should be closed in time, check spray Whether the pressure of oil nozzle meets the requirements, and whether bin gate is blocked by big particle diameter stone；Gather materials when floating, road surface should be scanned out, and Must not rubbing oneself adhered in place gather materials；When any material is finished, the valve of all conveying materials should be closed, usually Building stones switch is first closed, it is rear to close emulsified asphalt switch, the pitch oil film of Yao Liuyou 50cm, so as to seam.Then before chip sealer being pressed Job step is sailed out of into direction；

(6) joint treatment: transverse joint processing, transverse joint are handled using rendezvous method, horizontal with iron plate or tarred brown paper in every section of joint part It is layered on before this section is spilt a little and after terminal, length is 1 ~ 1.5m；Longitudinal joint processing, emulsified asphalt spread will guarantee straight suitable, the In that drives a vehicle Construct next width when, the spread of sealing side building stones should be aligned with the building stones on the right side of a upper width, guarantee that longitudinal joint docking is good, seam Pitch lap must not exceed l0cm；

(7) be compacted and form: synchronous surface dressing laying finishes, after emulsified asphalt demulsification to be modified, using 16 ~ 30T's Rubber-tyred roller roll for 2 ~ 4 times, when rolling, should follow intermediate, first slow rear fast principle behind first both sides, every next round when rolling Mark is overlapped 30cm, and rolling speed control road roller in 30m/min ~ 60m/min, roller compaction process arbitrarily must not brake or turn around；

(8) construction terminates chip sealer to be cleaned: chip sealer being driven into no vehicular traffic, is stopped without the specified safety place such as slope It puts；

2) upper epidermis and transition zone construction

(1) travelling route of paver, and field lofting construction lofting: are determined according to the actual conditions of construction area；

(2) it charges: mineral aggregate, emulsified asphalt, filler, water, additive etc. is respectively charged into the corresponding hopper of paver, Ying Bao Demonstrate,prove the humidity uniformity of mineral aggregate；

(3) it paves and blanks and moulding and conserving: charged paver being opened to construction starting point, is directed at strike angle line, and adjust Paving box thickness and camber are adjacent to paving box periphery with former road surface, and one piece of malthoid of place mat, works as booth preferably under the paving box of starting point After paving machine advances, malthoid is taken away together together with mixture above, by production mix proportion and live mineral aggregate water content situation, fills Point mix and stir mineral aggregate, filler, water, additive and lotion, the mixture mixed flow into pave slot and be distributed in the slot that paves it is appropriate when, open Dynamic paver vehicle at the uniform velocity advances, openable paver vehicle following sparge pipe when needing, and water spray is wet, and spreading speed is to keep mixture The amount of paving and amount of agitation it is almost the same subject to, general forward speed be 1.5 ~ 3.0km/h, should manually be looked for immediately after paving Flat, levelling emphasis is: starting point, terminal, longitudinal seam, blocked up, excessively thin or uneven place, especially gathers materials generation to super large partial size Longitudinal scratch should be removed and be filled and led up as early as possible, and molding rolls, and upper epidermis and transition zone forbid any vehicle during conserving molding And pedestrian enter, transition zone 4~6 roll using pneumatic-tired rollers, and upper table can be carried out after the completion of transition zone rolls Layer making；

(4) scene of transition zone and upper epidermis paves: charged paver being opened to construction starting point, manipulator commands booth It spreads vehicle and is directed at Construction control line, paving box is stably placed to the place that starts, leveling personnel adjust paving box thickness and camber；Operation Hand combines the experience adjustments material jaw opening that actually paves according to calibration result；Mixture uniformly paves, and the control of paver vehicle speed exists 1.5-3.0KM/h, strict control paving thickness are laid in transverse joint processing using sheet iron with ensuring pavement performance Seam crossing, vehicle to be paved paves takes out simultaneously manual sorting seam immediately later；Control surface evenness.

The utility model has the following beneficial effects: improving concrete road surface anti-permeability performance, abrasion resistance to solve plat-bottom escape Can, improve road face durability, using the arrangement and method for construction of asphaltic base composite seal coat, asphaltic base composite seal coat design overall thickness be 17 ~ 22mm divides three layers of implementation, the asphaltic base combined type sealing scheme of sub-layer, transition zone and upper epidermis from the bottom to top.

Above description is only a specific implementation of the present invention, but the protection scope of the utility model is not limited to In this, any change or replacement expected without creative work be should be covered within the scope of the utility model.

Claims (1)

1. a kind of pitch composite seal coat for road in airport, it is characterised in that: including being layed on cement stabilized macadam base Modified emulsifying asphalt synchronous surface dressing, and the MS-2 type micro-surface area mistake being layed on modified emulsifying asphalt synchronous surface dressing Layer is crossed, and the MS-2 type micro-surface area upper epidermis being layed on MS-2 type micro-surface area transition zone.