阅读说明：本技术 泡沫温拌沥青的制备方法 (The preparation method of foam warm-mixed asphalt ) 是由 张建同 于芳 徐礼华 刘素梅 肖曦彬 张怡坚 于 2019-09-27 设计创作，主要内容包括：本发明涉及泡沫温拌沥青的技术领域,公开了泡沫温拌沥青的制备方法,包括以下制备步骤：1)、将沥青加入加热筒中,加热筒对沥青持续加热,直至沥青的温度不低于150℃；2)、往加热筒内加入沸石类温拌剂；3)、将置于加热筒上方的搅拌棒自上而下伸入加热筒中,通过电机驱动搅拌棒搅拌加热筒的沥青；搅拌棒以顺时针转动及逆时针转动交替转动,且搅拌棒的搅拌时间不低于3min,搅拌棒搅拌停止后,加热筒内的沥青形成泡沫温拌沥青；先利用加热筒对沥青进行加热,再加热沸石类温拌剂,使得沥青快速物理状态改变,利用搅拌棒使得沸石类温拌剂与沥青更好的拌和,形成质量较高的泡沫温拌沥青,制备流程简单,操作也方便。(The present invention relates to the technical fields of foam warm-mixed asphalt, disclose the preparation method of foam warm-mixed asphalt, including following preparation step: 1), by pitch being added in cartridge heater, cartridge heater is to pitch continuous heating, until the temperature of pitch is not less than 150 DEG C；2) zeolites warm-mixing agent, is added in cartridge heater；3) it, is placed on the stirring rod above cartridge heater to protrude into cartridge heater from top to bottom, passes through the pitch of motor driven stirring rod agitating and heating cylinder；Stirring rod is to rotate clockwise and rotate counterclockwise alternate rotation, and the mixing time of stirring rod is not less than 3min, and after stirring rod stirring stops, the pitch in cartridge heater forms foam warm-mixed asphalt；Pitch is heated first with cartridge heater, reheats zeolites warm-mixing agent, so that pitch rapid physical state changes, using stirring rod zeolites warm-mixing agent is preferably mixed and stirred with pitch, the higher foam warm-mixed asphalt of quality is formed, preparation flow is simple, and operation also facilitates.)

1. the preparation method of foam warm-mixed asphalt, which is characterized in that including following preparation step:

1), pitch is added in cartridge heater, the cartridge heater is to pitch continuous heating, until the temperature of pitch is not less than 150 DEG C；

2) zeolites warm-mixing agent, is added in the cartridge heater；

3) it, is placed on the stirring rod above the cartridge heater to protrude into cartridge heater from top to bottom, by stirring described in motor driven Stick stirs the pitch of the cartridge heater；The stirring rod is to rotate clockwise and rotate counterclockwise alternate rotation, and the stirring The mixing time of stick is not less than 3min, and after the stirring rod stirring stops, the pitch in the cartridge heater forms the drip of foam warm mix It is green.

2. the preparation method of foam warm-mixed asphalt as described in claim 1, which is characterized in that in the preparation step 3) in, After the stirring rod protrudes into the pitch in the cartridge heater, the stirring rod is moved up and down along the axial direction of cartridge heater, until After the zeolites warm-mixing agent being placed on pitch is mixed into pitch, the stirring rod starts turning stirring.

3. the preparation method of foam warm-mixed asphalt as claimed in claim 2, which is characterized in that the periphery of the stirring rod is equipped with The stirring blade of multiple arrangements that extend outwardly, multiple stirring blades are arranged along the axially spaced-apart of the stirring rod；It is described The bottom of stirring rod is provided with the scraping blade to extend outwardly, and the bottom of the scraping blade has scraping；In the preparation step 3) in, when Before the stirring rod starts stirring, the bottom of the stirring rod stretches to the bottom of the cartridge heater, the scraping of the scraping blade Abut the bottom of the cartridge heater.

4. the preparation method of foam warm-mixed asphalt as claimed in claim 3, which is characterized in that the scraping blade includes two pieces Body, the inner end of the sheet body are connected to the periphery of the stirring rod, and the outer end of the sheet body extends outwardly arrangement；The sheet body tool There is upwardly disposed upper side edge, the upper side edge docking of two sheet bodies, the scraping is formed on the bottom of the sheet body；Along from upper Direction under and, two inclined arrangements of sheet body, and two sheet bodies are arranged towards reverse inclination.

5. the preparation method of foam warm-mixed asphalt as claimed in claim 3, which is characterized in that the scraping of the scraping blade is in level Shape, and the bottom flush arrangement with the stirring rod；In the preparation step 3) in, it is described to scrape when stirring rod, which rotates, to be stirred While the bottom that abut the cartridge heater scrapes.

6. the preparation method of foam warm-mixed asphalt as claimed in claim 3, which is characterized in that along the axis of the stirring rod To adjacent stirring blade dislocation is positioned opposite；Along top-down direction, the stirring blade is obliquely arranged, and phase The adjacent stirring blade is in tilted layout in the opposite direction.

7. the preparation method of foam warm-mixed asphalt as claimed in claim 6, which is characterized in that the periphery of the stirring rod is arranged There is the horizontal baffle of multiple arrangements that extend outwardly, multiple horizontal baffles are arranged along the axially spaced-apart of the stirring rod, institute Between the adjacent stirring rod for stating horizontal baffle arrangement, and the adjacent horizontal baffle is in dislocation arrangement.

8. the preparation method of foam warm-mixed asphalt as described in any one of claim 1 to 7, which is characterized in that the cartridge heater With the inner sidewall arranged inwardly, multiple crooked groove items are provided on the inner sidewall of the cartridge heater, multiple bendings are recessed Groove bar extends the axially spaced-apart arrangement of the cartridge heater；The middle part of the crooked groove item is raised upward, the crooked groove item Both ends difference decurvation arrangement.

9. the preparation method of foam warm-mixed asphalt as claimed in claim 8, which is characterized in that along the crooked groove item The direction at end to the middle part of crooked groove item, the tapering width of the crooked groove item.

10. the preparation method of foam warm-mixed asphalt as claimed in claim 9, which is characterized in that multiple crooked groove items Middle part be in upper and lower alignment；The vertical groove item being vertically arranged is provided on the inner sidewall of the cartridge heater, it is described vertical Slot stick runs through the middle part of multiple crooked groove items arranged up and down.

Technical field

The invention patent relates to the technical fields of foam warm-mixed asphalt, in particular to the preparation of foam warm-mixed asphalt Method.

Background technique

With the fast development of economic society, road construction becomes one of the key construction project of national basis construction.In During road construction, for pitch as one of basic raw material, consumption is huge；Road trimming annual simultaneously also consumes a large amount of Pitch resource.In traditional asphalt use process, it usually needs by asphalt heating to 180 DEG C, to ensure normally sprawling for pitch With roll, enable pitch to complete normally to use.A certain amount of harmful substance can be discharged in high-temperature heating process, seriously affect The health of construction personnel can also bring a series of environmental problem；In addition in road makeover process, since pitch is old Expect the problems such as melting temperature is high, aging is serious, viscosity is high, so that the old asphalt rate of recovery is low, causes very big waste.

Currently, the warm mix technology of asphalt is more and more paid attention to by people, the warm mix technology of mainstream is mainly led to Crossing admixture reduces the high temperature viscosity of asphalt to realize, advanced warm-mixed asphalt technology can make warm-mixed asphalt completely Mixture reaches the performance of hot-mix asphalt mixture, and has some such as easy processings, resistance to storage, environmentally friendly etc. Advantage.

The particle water viscosity of foam warm-mixed asphalt is far below pitch, can play lubricating action to pitch；And foam warm mix drips The exclusion of particle water will increase the deformability of pitch entirety in blueness；Therefore, foamed asphalt can be reduced compared to plain asphalt viscosity； Compared with traditional hot-working bituminous pavement, using foam warm-mixed asphalt be laid with pavement strength, ageing resistance, water repelling property more With superiority, therefore, preparing foam warm-mixed asphalt becomes the research hotspot for being used for road construction.

Summary of the invention

The purpose of the present invention is to provide the preparation methods of foam warm-mixed asphalt, it is intended to solve in the prior art, tradition drip Green viscosity is high, is denaturalized the problem of ability difference.

The invention is realized in this way the preparation method of foam warm-mixed asphalt, including following preparation step:

1), pitch is added in cartridge heater, the cartridge heater is to pitch continuous heating, until the temperature of pitch is not less than 150℃；

2) zeolites warm-mixing agent, is added in the cartridge heater；

3) it, is placed on the stirring rod above the cartridge heater to protrude into cartridge heater from top to bottom, by described in motor driven Stirring rod stirs the pitch of the cartridge heater；The stirring rod is and described to rotate clockwise and rotate counterclockwise alternate rotation The mixing time of stirring rod is not less than 3min, and after the stirring rod stirring stops, the pitch in the cartridge heater forms foam temperature Mix pitch.

Further, in the preparation step 3) in, it is described after the stirring rod protrudes into the pitch in the cartridge heater Stirring rod is moved up and down along the axial direction of cartridge heater, until after the zeolites warm-mixing agent being placed on pitch is mixed into pitch, institute It states stirring rod and starts turning stirring.

Further, the periphery of the stirring rod is equipped with the stirring blade of multiple arrangements that extend outwardly, multiple stirrings Blade is arranged along the axially spaced-apart of the stirring rod；The bottom of the stirring rod is provided with the scraping blade to extend outwardly, described to scrape The bottom of piece has scraping；In the preparation step 3) in, before the stirring rod starts stirring, the bottom of the stirring rod The bottom of the cartridge heater is stretched to, the scraping of the scraping blade abuts the bottom of the cartridge heater.

Further, the scraping blade includes two sheet bodies, and the inner end of the sheet body is connected to the periphery of the stirring rod, institute The outer end for stating sheet body extends outwardly arrangement；The sheet body has upwardly disposed upper side edge, the upper side edge pair of two sheet bodies It connects, the scraping is formed on the bottom of the sheet body；Along top-down direction, two inclined arrangements of sheet body, and two The sheet body is arranged towards reverse inclination.

Further, the scraping of the scraping blade is horizontal, and the bottom flush arrangement with the stirring rod；In the system In standby step 3), when stirring rod, which rotates, to be stirred, the bottom that the scraping abuts the cartridge heater is scraped.

Further, along the axial direction of the stirring rod, adjacent stirring blade dislocation is positioned opposite；Along top-down Direction, the stirring blade are obliquely arranged, and the adjacent stirring blade is in tilted layout in the opposite direction.

Further, the periphery of the stirring rod is provided with the horizontal baffle of multiple arrangements that extend outwardly, multiple water Flat baffle is arranged along the axially spaced-apart of the stirring rod, between the adjacent stirring rod of the horizontal baffle arrangement, and it is adjacent The horizontal baffle in dislocation arrangement.

Further, the cartridge heater has the inner sidewall arranged inwardly, is provided on the inner sidewall of the cartridge heater more A crooked groove item, multiple crooked groove items extend the axially spaced-apart arrangement of the cartridge heater；The crooked groove item Middle part is raised upward, the both ends difference decurvation arrangement of the crooked groove item.

Further, the direction at the middle part along the end of the crooked groove item to crooked groove item, the bending are recessed The tapering width of groove bar.

Further, the middle part of multiple crooked groove items is in upper and lower alignment；On the inner sidewall of the cartridge heater It is provided with the vertical groove item being vertically arranged, the vertical groove item runs through the middle part of multiple crooked groove items arranged up and down.

Compared with prior art, the preparation method of foam warm-mixed asphalt provided by the invention, first with cartridge heater to pitch It is heated, to guarantee that the temperature of pitch reaches 150 DEG C or more, then toward cartridge heater heating zeolite class warm-mixing agent, can to drip Green rapid physical state changes, using stirring rod is clockwise to pitch and alternate rotation counterclockwise, so that zeolites warm-mixing agent It is preferably mixed and stirred with pitch, forms the higher foam warm-mixed asphalt of quality, entire preparation flow is simple, and operation also facilitates.

Detailed description of the invention

Fig. 1 is the flow diagram of the preparation method of foam warm-mixed asphalt provided by the invention；

Fig. 2 is the schematic front view of the Preparation equipment of foam warm-mixed asphalt provided by the invention；

Fig. 3 is the stereoscopic schematic diagram of scraping blade provided by the invention；

Fig. 4 is the schematic front view of the inner sidewall of cartridge heater provided by the invention.

Specific embodiment

In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and It is not used in the restriction present invention.

Realization of the invention is described in detail below in conjunction with specific embodiment.

The same or similar label correspond to the same or similar components in the attached drawing of the present embodiment；In description of the invention In, it is to be understood that if there is the orientation or positional relationship of the instructions such as term " on ", "lower", "left", "right" for based on attached drawing institute The orientation or positional relationship shown, is merely for convenience of description of the present invention and simplification of the description, rather than the dress of indication or suggestion meaning It sets or element must have a particular orientation, be constructed and operated in a specific orientation, therefore describe the use of positional relationship in attached drawing Language only for illustration, should not be understood as the limitation to this patent, for the ordinary skill in the art, can be with The concrete meaning of above-mentioned term is understood as the case may be.

It is preferred embodiment provided by the invention referring to Fig.1 shown in -4.

The preparation method of foam warm-mixed asphalt, including following preparation step:

1), pitch is added in cartridge heater 101, cartridge heater 101 is to pitch continuous heating, until the temperature of pitch is not less than 150℃；

2) zeolites warm-mixing agent, is added in cartridge heater 101；

3) stirring rod 102 for, being placed on 101 top of cartridge heater is protruded into from top to bottom in cartridge heater 101, passes through motor driven The pitch of 102 agitating and heating cylinder 101 of stirring rod；Stirring rod 102 is stirred with rotating clockwise and rotating counterclockwise alternate rotation The mixing time of stick 102 is not less than 3min, and after the stirring of stirring rod 102 stops, the pitch in cartridge heater 101 forms the drip of foam warm mix It is green.

Since zeolites warm-mixing agent belongs to enhydrite, in the process for preparing foam warm-mixed asphalt using zeolites warm-mixing agent In, pitch does not chemically react, only the change of physical state.When zeolites warm-mixing agent and Asphalt Contactor, due to pitch Temperature is greater than 100 DEG C, when pitch heat is transferred quickly to miberal powder, the vaporization of miberal powder internal moisture, and vapor expansion, in pitch table Under the action of the tension of face, asphalt membrane wraps vapor, forms foamed asphalt.Influence of the foamed asphalt to asphaltic nature mainly has Following two points: first is that particle water viscosity is far below pitch, lubricating action can be played to pitch；Second is that particle water in foamed asphalt Exclusion will increase the deformability of pitch entirety.Therefore, foamed asphalt can be reduced compared to plain asphalt viscosity.But with the time Passage, foam can gradually vanish, and exclude from asphalt surface, therefore the reduction of asphalt viscosity has timeliness.

The preparation method of the foam warm-mixed asphalt of above-mentioned offer, heats pitch first with cartridge heater 101, to guarantee The temperature of pitch reaches 150 DEG C or more, then toward 101 heating zeolite class warm-mixing agent of cartridge heater, can make pitch rapid physical shape State changes, using stirring rod 102 is clockwise to pitch and alternate rotation counterclockwise, so that zeolites warm-mixing agent and pitch are more preferable Mix and stir, formed the higher foam warm-mixed asphalt of quality, entire preparation flow is simple, operation also facilitate.

In the present embodiment, heater strip is set in the side wall of cartridge heater 101, is generated heat by heater strip, then is thermally conductive to heating The inside of cylinder 101；Alternatively, heating rod directly can also be arranged on the inner sidewall of cartridge heater 101, using heating rod to cartridge heater Pitch in 101 is heated, it is, of course, also possible to have other multiple heating modes, for example, directly in outside to cartridge heater 101 Being heated can also be with.

In preparation step 3) in, after stirring rod 102 protrudes into the pitch in cartridge heater 101, stirring rod 102 is along cartridge heater 101 axial direction moves up and down, until stirring rod 102 starts to turn after the zeolites warm-mixing agent being placed on pitch is mixed into pitch Dynamic stirring.

In this way, in preparation step 2) in, be placed in zeolites warm-mixing agent on pitch then can with stirring rod 102 up and down It is mobile, it is quickly blended among pitch, allows zeolites warm-mixing agent to play uniform physical state to all pitches and change.

The periphery of stirring rod 102 be equipped with multiple arrangements that extend outwardly stirring blade 100, multiple stirring blades 100 along The axially spaced-apart of stirring rod 102 is arranged；The bottom of stirring rod 102 is provided with the scraping blade 103 to extend outwardly, the bottom of scraping blade 103 With scraping；In preparation step 3) in, before stirring rod 102 starts stirring, the bottom of stirring rod 102 stretches to cartridge heater 101 bottom, the scraping of scraping blade 103 abut the bottom of cartridge heater 101.

When stirring rod 102 is rotated, pitch is stirred using stirring blade 100, so that zeolites warm-mixing agent and pitch Mixing is more uniform；In addition, being abut and being added using the scraping of scraping blade 103 since the pitch of 101 bottom of cartridge heater may be sticked The bottom of hot cylinder 101, in this way, stirring rod 102 is in the course of rotation, scraping can then scrape the bottom of cartridge heater 101, avoid adding The pitch of hot 101 bottom of cylinder sticks.

Scraping blade 103 includes two sheet bodies 1031, and the inner end of sheet body 1031 is connected to the periphery of stirring rod 102, sheet body 1031 Outer end extend outwardly arrangement；Sheet body 1031 has upwardly disposed upper side edge, the upper side edge docking of two sheet bodies 1031, sheet body Scraping is formed on 1031 bottom；Along top-down direction, two inclined arrangements of sheet body 1031, and two sheet bodies 1031 It is arranged towards reverse inclination.

The inclined arrangement of sheet body 1031, in this way, after scraping sweeps the pitch of 101 bottom of cartridge heater, pitch can be along Sheet body 1031 is moved upwardly by, convenient for the pitch of 101 bottom of cartridge heater arches upward upward, and since stirring rod 102 rotates clockwise And rotate counterclockwise and alternate, in this way, the opposite sheet body 1031 of two inclined directions can work.

In addition, working as stirring rod 102 in the course of rotation, the pitch being partially disposed between two sheet bodies 1031 also can be by band Turn is dynamic, so that the mobility of the pitch of 101 bottom of cartridge heater is stronger.

The scraping of scraping blade 103 is horizontal, and the bottom flush arrangement with stirring rod 102, in this way, being conducive to scraping to adding Hot 101 bottom of cylinder scrapes；In preparation step 3) in, when stirring rod 102, which rotates, to be stirred, scraping abuts cartridge heater 101 Bottom scrapes.

Along the axial direction of stirring rod 102, adjacent stirring blade 100 misplaces positioned opposite, can preferably stir pitch； Along top-down direction, stirring blade 100 is obliquely arranged, in this way, with the rotation of stirring rod 102, inclination arrangement Stirring blade 100 can moving up and down with synchronous drive pitch so that stirring is more uniform；Adjacent stirring blade 100 is towards phase Opposite direction is in tilted layout, in this way, between adjacent stirring blade 100, then can generate bigger with the rotation of stirring rod 102 Disturbance, the stirring of pitch can be made more uniform.

The periphery of stirring rod 102 is provided with the horizontal baffle 104 of multiple arrangements that extend outwardly, multiple horizontal 104 edges of baffle The axially spaced-apart arrangement of stirring rod 102, between the adjacent stirring rod 102 that horizontal baffle 104 is arranged, and adjacent horizontal gear Piece 104 is in dislocation arrangement.

In this way, horizontal baffle 104 can drive pitch to disturb up and down when stirring rod 102 moves up and down, work as stirring rod When 102 rotation, horizontal baffle 104 will not cause to interfere to rotation.

Cartridge heater 101 has the inner sidewall arranged inwardly, is provided with multiple crooked groove items on the inner sidewall of cartridge heater 101 105, multiple crooked groove items 105 extend the axially spaced-apart arrangement of cartridge heater 101, in this way, when pitch is stirred stick 102 with turn When dynamic, the pitch that abut the inner sidewall of cartridge heater 101 then can preferably rotate under the guiding of bending groove bar, convenient for pitch Stirring.

The middle part of crooked groove item 105 is raised upward, the both ends difference decurvation arrangement of crooked groove item 105, in this way, It is adapted to rotating clockwise and rotating counterclockwise for stirring rod 102, also, when pitch is along crooked groove item 105 Guiding, after moving upward to the middle part of crooked groove item 105, and is moved downward, so that increase pitch moves up and down degree, is had Conducive to the stirring of pitch.

Along the direction at end to the middle part of crooked groove item 105 of crooked groove item 105, the width of crooked groove item 105 Degree is gradually reduced.Interference is realized in this way, can flow to the guiding of pitch, convenient for the stirring of pitch.

The middle part of multiple crooked groove items 105 is in upper and lower alignment；It is provided on the inner sidewall of cartridge heater 101 perpendicular To the vertical groove item 106 of arrangement, vertical groove item 106 runs through the middle part of multiple crooked groove items 105 arranged up and down.This Sample is separated the middle part of crooked groove item 105 by vertical groove item 106, and during pitch is stirred rotation, pitch turns It moves to the middle part of crooked groove item 105, under the interference of vertical groove item 106, it may occur that it is biggish highly mobile, convenient for drip Green stirring, is conducive to pitch and mixes with the uniform of zeolites warm-mixing agent.

The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.