CN106638213B - A kind of cement road construction method - Google Patents
A kind of cement road construction method Download PDFInfo
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- CN106638213B CN106638213B CN201610986840.9A CN201610986840A CN106638213B CN 106638213 B CN106638213 B CN 106638213B CN 201610986840 A CN201610986840 A CN 201610986840A CN 106638213 B CN106638213 B CN 106638213B
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- rubble
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- road
- cement
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/32—Coherent pavings made in situ made of road-metal and binders of courses of different kind made in situ
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C11/00—Details of pavings
- E01C11/02—Arrangement or construction of joints; Methods of making joints; Packing for joints
- E01C11/04—Arrangement or construction of joints; Methods of making joints; Packing for joints for cement concrete paving
- E01C11/06—Methods of making joints
Abstract
The invention discloses a kind of cement road construction methods, belong to technical field of road construction, a kind of thermal expansion ratio of the rubble in reduction base is intended to provide so that face layer cement road construction method not easy to break, the step of its technical solution is as follows, construction method includes the construction line-putting, excavates roadbed slot, is laid with bed course, is laid with base, paved surface layer, joint-cutting, maintenance, the cementation of fissures.The construction method is suitable for the road construction to city, small towns.
Description
Technical field
The present invention relates to road construction technology, more particularly to a kind of cement road construction method.
Background technology
Road-making material has several major class such as cement concrete, bituminous concrete and sandstone material, the technical quality from road surface
Can from the point of view of, cement concrete pavement is optimal, its bearing capacity is big, and oil resistant class corrodes, and surface resistance is small, and service life is long, and tie up
Shield is simple, expense is low, although one-time investment is higher, comprehensive benefit is high, is widely used by people.
Since cement concrete pavement will bear impact, vibrations and the rubbing action of the high carrier vehicle of high speed repeatedly, to bear
The quenching of various harsh weather such as summer high temperature and heavy rain, the Frozen-thawed cycled in winter, road surface and roadbed are expanded as caused by the temperature difference
Stress etc., these unfavorable factors can all cause pavement damage, durability made to decline.It is therefore desirable to which cement concrete pavement has
Good mechanical property will also have enough anti-dry-shrinkage deformed ability and wearability.
And usually during existing construction method, it is all only simple right in the work progress of many cement roads
Road is laid with, the face layer for being first laid with bed course in a conventional manner, being made of gravelly base and cement concrete,
And during the use of road, daytime surface temperature higher some cities larger especially for day and night temperature, rubble
Expanded by heating rate is larger, and the heat expansion due to rubble during long-term use just leads to face fault rupture.
Invention content
The object of the present invention is to provide a kind of cement road construction method, have reduce the thermal expansion ratio of the rubble in base with
Keep face layer not easy to break.
The present invention above-mentioned technical purpose technical scheme is that：A kind of cement road construction party
Method includes the following steps：
Step 1, the construction line-putting：The center line for delimiting road, is used in combination albarium to mark road profile；
Step 2 excavates roadbed slot：Roadbed slot is dug out in road profile by excavator, and is ground by vibrated roller
Press roadbed slot；
Step 3 is laid with bed course：The rock-powder stablized with cement slag that moisture content is 12% is uniformly laid on roadbed slot and is formed
Bed course, the thickness of tiling are 20cm, and by vibrated roller static pressure 1 time, then are gently shaken by vibrated roller 2 times, most laggard
Row three-wheel final pressure 3 times；
Step 4 is laid with base：It being uniformly laid on bed course by gravelly base, the thickness of base is 30cm,
It sprays heat absorbent in base, and by vibrated roller static pressure 1 time, then is gently shaken by vibrated roller 2 times, pass through vibration later
Road roller shakes by force 2 times, finally carries out three-wheel final pressure 3 times；
Step 5, paved surface layer：The cement concrete that concrete mixer truck is transported is poured in base, is paved with smashing
The device that shakes, which smash shaking, forms it into thickness as layer below 5cm, metal mesh is then laid in the layer below, then again by concrete
Cement concrete in trucd mixer is poured on metal mesh, is paved and shakes that form it into thickness be 15cm's with smashing the device that shakes and smash
The both sides of upper layer, metal mesh protrude from the side of upper layer；
Step 6, joint-cutting：It carries out cutting expansion joint and expansion joint (E.J.) after the cement concrete of upper layer reaches initial set, stretch
It is divided between seam and is cut every 6.5m, and width is 1.9-2.4cm；
Step 7, maintenance：It first sprinkles water on upper layer, when having the water layer of 3-4mm on upper layer, gunnysack is covered in
On upper layer, and 2-3 times is sprayed daily to keep road surface to moisten, curing time is 28 days；
Step 8, the cementation of fissures：The sawdust on expansion joint and upper layer is removed totally, by pitch or fluid sealant with giant
It is filled into expansion joint, the depth of perfusion is 7-8cm.
By predefining construction road center line so that staff can accurately be opened when excavating roadbed slot
Work is dug, then it is rolled by vibrated roller so that roadbed slot can be compacted, flatten, by rock-powder stablized with cement slag
After laying stroke bed course, rubble is laid on bed course and is sprayed heat absorbent, rubble is flattened, be compacted after shape
At base, during the use of road, when the temperature of road crust constantly increases and transfers heat to base, rubble
Temperature can increase, and heat absorbent just can absorb the temperature of rubble at this time, to make the temperature of rubble be not easy to increase,
So that rubble is not easy to expand, to be not easy to lead to the cracking of face layer because of the heat expansion of rubble during road occupation；In base
On be laid with cutting optimal, metal mesh, upper layer successively, metal mesh can export the internal heat of upper layer and upper layer outward
A part to reduce the heat inside the layer of face, and then enables the bulk temperature of face layer to be lowered, and then reduces the heat of face layer
Expansion rate makes face layer be not easy to crack because of the expansion of cement concrete.
Further, the heat absorbent includes that paraffin powder, rubber powder, water mix, the paraffin powder, rubber powder, water matter
Amount is than being 1:1.5:4.
By the way that paraffin powder is mixed with rubber powder, water so that paraffin powder is dissolved into liquid, when heat absorbent sprays, stone
Wax powder can be spread across with liquid on rubble, and heat absorbent has mobility, it is thus possible to be entered with paraffin powder broken
In the hole of stone so that paraffin powder is adequately contacted with rubble, and rubber powder has the function of bonding and solid water, therefore rubber powder energy
Enough that paraffin powder is bonded on rubble, paraffin powder can be when rubble be to be expanded, timely by the heat of rubble as phase-change material
Amount export, to reduce the expansion rate of rubble, while rubber powder can absorb a large amount of moisture, to be present in the hole of rubble
In；The energy of rubble can also be sucked and be stored by its moisture absorbed as phase-change material, to reduce the expansion rate of rubble.
Further, before being laid with base, one layer of rubber asphalt layer, the thickness of the rubber asphalt layer are laid on bed course
Degree is 3cm.
Rubber asphalt layer has higher high-temperature stability, viscous stickiness and water proofing property, thus rubble is being routed to rubber drip
Allow to firmly stick on rubber asphalt layer in cyan layer, and the fixation that rubber asphalt layer can be stablized during use
Rubble makes rubble be not susceptible to move, and rubber asphalt layer can also make the moisture on rubber asphalt layer be not easy to penetrate into below bed course,
Knife face structural destruction is caused to make road be not easy expansion, extends the service life in road face.
Further, the rubble includes the rubble one that 70% grain size is 15-20mm and the rubble that 30% grain size is 5-10mm
Two；First rubble one is tiled on bed course, then rubble two is taped against on rubble one, and by weight is first 10 tons before pressing
Vibrated roller base is flattened with 6-8km/h under strong state of shaking.
By the way that rubble one is mixed with rubble two so that large-sized rubble one, which can be constituted, main bears gravity
Carrier, then mixing the rubble of small particle two with rubble one makes rubble two be filled into rubble one so that between rubble one
Gap can be filled so that rubble one can carry out bearing pressure, and rubble one, rubble when being oppressed by gravity
Many holes are had between two, this part hole enters for heat absorbent, in the heat expansion that the variation of temperature generates, these holes
Space just is provided for the deformation of heat absorbent, hole can also make road surface be not easy by the filling of heat absorbent；And by rubble
The base of composition has preferable drain function, and mutually inadherent rubble does not transmit tensile stress, largely can
Enough prevent and reduce the generation in crack；The vibrated roller for being 10 tons by weight is with the speed of 6-8km/h to rubble one, rubble
Two carry out leveling of shaking by force so that the hole lyriform pore that rubble two can enter rubble one under strong vibration is filled so that
The load-bearing capacity of entire base is stronger.
Further, when being laid with bed course, first rubble one is laid on rubber asphalt layer and thickness is 5-7cm, then
Rubble two is laid on rubble one, heat absorbent is sprayed on rubble two, and the spread quantity of heat absorbent is 0.5kg/m2, it
The vibrated roller for being afterwards 10 tons by weight i.e. vibration frequency under strong state of shaking is 45-70Hz, amplitude 0.8-2.0mm,
Rolling speed is that 6-8km/h flattens the above-mentioned rubble one laid, rubble two, repeats the step 4-5 times.
By being first laid with the rubble one of 5-7cm, rubble two is re-layed so that rubble two can enter under strong vibration
Hole lyriform pore to rubble one is filled so that the load-bearing capacity of entire base is stronger, is laid in rubble two and completes to spray later
Heat absorbent is flattened again so that heat absorbent can be contacted adequately with rubble one, rubble two, and then can be timely right
Rubble one, rubble two absorb heat, and strong by vibrated roller is shaken, and rubble two is made more fully to be filled into the hole of rubble one
In, effective the phenomenon that reducing the excessive upper layer for concentrating on rubble one of rubble two.
Further, after being laid with rubble two, before spraying heat absorbent, the spread metal powder on rubble two, the gold
The spread quantity for belonging to powder is 0.35kg/m2。
By the spread metal powder on rubble two, when heat absorbent is sprayed onto on rubble two, in vibrated roller and suction
Under the action of the mobility of thermit powder itself, metal powder can be together brought into the hole of rubble one, rubble two by heat absorbent, into
And rubble one, two receiving plane layer of rubble heat when, metal powder also can timely inhale the heat of rubble one, rubble two
Enter, and then reduce the temperature of rubble one, rubble two so that rubble one, rubble two are not easy to expand.
Further, the metal powder is copper powder.
By the way that copper powder to be packed into rubble one, rubble two, the heat conductivility of copper is preferable, and is of relatively low cost,
Therefore when rubble one, two temperature of rubble increase, copper powder can timely suck the heat of rubble one, rubble two, and then drop
The temperature of low rubble one, rubble two so that rubble one, rubble two are not easy to expand.
Further, the metal mesh is made of the reinforcing bar one of the threaded steel pipe of a diameter of 1.5cm and a diameter of 0.5cm,
The junction of the threaded steel pipe and reinforcing bar one is attached by tied silk, and the length direction of the threaded steel pipe and road hangs down
Directly, the reinforcing bar one is parallel with the length direction of road；
After metal mesh laying and before maintenance is completed, cooling water is passed through in threaded steel pipe.
By constituting metal mesh by threaded steel pipe and reinforcing bar one, make in weight of the metal mesh relative to the metal of equivalent specifications
Mitigated, to make metal mesh when being placed on cutting optimal, metal mesh is not easy to be trapped in cutting optimal because of preponderance,
Make the initial placement position of metal mesh be not susceptible to change, while can mitigate staff's during placing metal mesh
Labor intensity；The outer wall of threaded steel pipe is screw thread, and when reinforcing bar one being made to be connect with threaded steel pipe by tied silk, reinforcing bar one is not easy
It is moved on threaded steel pipe, so that the structure of metal mesh is more stablized, and threaded steel pipe is connect with upper layer, cutting optimal
When, the threaded outer wall of threaded steel pipe can increase the connection area between upper layer, cutting optimal, and upper layer, under
After the layer solidification-stable of face, the position of upper layer, cutting optimal and threaded steel pipe connection can be formed fits with threaded steel pipe outer wall shape
The groove matched so that threaded steel pipe is not susceptible to move, and then the structure of entire surface layer is made more to stablize, by cement concrete
The road surface of formation provides compression strength, provides tensile strength by metal mesh, during maintenance, is passed through in threaded steel pipe cold
But water, threaded steel pipe have preferable heat conductivility, and cooling water can carry out heat exchange with threaded steel pipe, to reduce spiral shell
The temperature of line steel pipe, then the temperature inside cement concrete is reduced by threaded steel pipe, make to be not easy with surface layer inside cement concrete
The larger temperature difference is formed, and then is not likely to produce chicken-wire cracking, improves the service life of face layer.
Further, after conserving completion, the reinforcing bar two coordinated with threaded steel pipe shape is worn in threaded steel pipe.
After maintenance is completed, finally reinforcing bar two is packed into threaded steel pipe, improves the compression strength of threaded steel pipe, into
And cement concrete will not damage metal steel pipe by pressure, and then make road surface that there is more long service life.
Further, during being laid with base, face layer, vibrated roller shakes in static pressure, gently, Qiang Zhen, final pressure during,
It is to carry out rolling work from both sides of the road to centre, in the roller compaction process by outer lateral centre, it is equal rolls route each time
It is 2.5km/h with the speed that the edge 20cm of the preceding route once rolled is overlapped, and rolled.
It first carries out rolling work from both sides of the road to centre by vibrated roller so that vibrated roller is working
During, since vibrated roller carries out from both sides of the road to centre rolling work, rolled in vibrated roller
During, the rubble at pinch roller edge, which can be squeezed because of the gravity of pinch roller to the both ends of pinch roller, to be accumulated, then once
Roll route and the previous route that rolls have the overlapping region of 20cm, therefore, the rubble that accumulation is squeezed by pinch roller can be by under
Primary pinch roller is compacted, is flattened, and the rubble through overcompaction, leveling is not susceptible to significantly squeeze under the action of pinch roller
Accumulation, the process roll repeatedly, when rubble has there is a situation where squeezing accumulation, rubble is among road
It is mobile, without departing from road, on the other hand, primary roll route by preceding and overlap stone roller with the edge 20cm for once rolling route afterwards
Pressure so that being extruded the rubble of accumulation can be compacted and be flattened again so that rubble is not easy to protrude from basal plane, and then makes base
Face is more solid and smooth.
In conclusion the invention has the advantages that：It, can will be broken by the way that heat absorbent and copper powder are added in base
Shi Yi, rubble two heat siphon away, so that rubble one, rubble two is not easy expanded by heating, to being not easy during road occupation
Because the heat expansion of rubble leads to the cracking of face layer；
The internal heat of upper layer and upper layer can be exported a part outward by metal mesh, internal to reduce face layer
Heat, and then enable face layer bulk temperature be lowered, and then reduce face layer coefficient of thermal expansion, make face layer be not easy because of cement
The expansion of concrete and crack.
Description of the drawings
Fig. 1 is the construction method flow chart of embodiment 1；
Fig. 2 is the cement road structural schematic diagram of embodiment 1；
Fig. 3 is the base layer structure schematic diagram of embodiment 2；
Fig. 4 is the structural schematic diagram for embodying metal mesh in embodiment 3；
Fig. 5 is in embodiment 3 for embodying connection relationship diagram between threaded steel pipe, water pipe, suction pump, catch basin.
In figure, 1, bed course；11, rubber asphalt layer；2, base；21, rubble one；22, rubble two；23, heat absorbent；24, copper
Powder；3, face layer；31, upper layer；32, cutting optimal；4, metal mesh；41, threaded steel pipe；42, reinforcing bar one；43, tied silk；44, reinforcing bar
Two；5, catch basin；51, suction pump；52, water pipe.
Specific implementation mode
Below in conjunction with attached drawing, invention is further described in detail.
Embodiment 1：A kind of cement road construction method, as illustrated in fig. 1 and 2, including following construction procedure：
Step 1, the construction line-putting：The route of town road is determined first, and determines the center line of road, delimits construction model
It encloses, road profile is marked with albarium；
Step 2, roadbed slot is excavated：Excavator is driven into profile, and scoops away soil, the cubic meter of stone in profile to form roadbed
Slot is used in combination bull-dozer to be bulldozed the projection portion of roadbed slot slot bottom, is then put down the slot bottom of roadbed slot again using land leveller；
Step 3, it is laid with bed course 1：The rock-powder stablized with cement slag that moisture content is 12% is uniformly laid on roadbed slot and is formed
Thickness is the bed course 1 of 20cm, and then by vibrated roller static pressure 1 time, the speed rolled is 3km/h, then passes through vibration again
Road roller gently shakes 2 times, i.e., the vibration frequency of vibrated roller is 25 ~ 30Hz, and for amplitude in 1.4 ~ 2.0mm, the speed rolled is 2
~ 2.5km/h, and the direction of rolling of vibrated roller travels back and forth for the length direction along road, and be by the one of road
The sequence of the lateral other side rolls, and finally carries out in a manner of static pressure final pressure vibrated roller again 3 times, by above-mentioned steps
What its rock-powder stablized with cement slag can be pressed later is more tight, and the rock-powder stablized with cement slag containing 12% water is being rolled
During, the water of this part can stick together rock-powder stablized with cement slag, and then improve the tight degree of bed course 1, make bed course
It is not easy；
Step 4, it is laid with base 2：The rubber asphalt layer 11 that a layer thickness is 3cm is first laid on bed course 1 first, is then existed
Rubble is laid on rubber asphalt layer 11 to constitute the base 2 of 30cm or so, in the present embodiment, rubble includes that 70% grain size is 15-
The rubble 1 and 30% grain size of 20mm is the rubble 2 22 of 5-10mm, and during laying, rubble 1 is first laid with 5-
Then rubble 2 22 is laid on rubble 1 by 7cm again, secondly will by paraffin powder, rubber powder, water according to mass ratio be 1:1.5:
The heat absorbent 23 of 4 mixing compositions is sprayed onto on rubble 2 22, and the vibrated roller for being later 10 tons by weight is in strong state of shaking
I.e. vibration frequency is 45-70Hz down, and amplitude 0.8-2.0mm, rolling speed is 6-8km/h to the above-mentioned rubble one laid
21, rubble 2 22 is flattened, in the hole between enabling rubble 2 22 to enter rubble 1 under strong vibration, and
And rubble 1 can be made adequately to be embedded into rubber asphalt layer 11 and be securely attached to together with rubber asphalt layer 11, and at this
During a, heat absorbent 23 enters rubble 1, rubble 2 22 also with the vibration of rubble 2 22 and the mobility of itself
Hole in, adequately contacted with rubble 1, rubble 2 22, rubble 2 22 enters in rubble 1 so that entire base 2
Load-bearing capacity it is stronger, then repeat the above steps 4-5 times, make 2 thickness of base being finally made of rubble 1, rubble 2 22
Rubble 2 22 can be made more fully to be filled into the hole of rubble 1 in the mode of 30cm or so, sample, it is effective to reduce
It is the phenomenon that excessive upper layer for concentrating on rubble 1 of rubble 2 22, quiet by vibrated roller after being laid with and completing base 2
Pressure 1 time, then gently shaken by vibrated roller 2 times, it is shaken by force by vibrated roller 2 times later, finally carries out three-wheel final pressure 3 times,
Rubble 1, rubble 2 22 are pressed more tight, and are not easy to loosen so that is not easy to send out during use
Give birth to heavy phenomenon；
Step 5, paved surface layer 3：By the way that cement concrete to be poured in base 2, after cement concrete is manually paved
Smash shaking by smashing the device that shakes, it is layer 32 below 5cm to make cement concrete form thickness, by metal mesh after waiting for 60 minutes
On 4 auxiliary layers 32 below, then cement concrete is poured on metal mesh 4 again, after equally manually paving cement concrete
Smash shaking by smashing the device that shakes, it is the upper surface of 15cm layer 31 to make cement concrete form thickness, and the both sides of metal mesh 4 are from road
Both sides protrude, and wherein the internal heat of 31 lower section of upper layer and upper layer 31 can be exported a part outward by metal mesh 4, be made
Inside cement concrete and surface layer is not easy to form the larger temperature difference, moreover it is possible to and opposite layer 3 cools down, and then is not likely to produce crack,
The service life for improving face layer 3, reduces the heat for being transmitted to base 2；
Step 6, joint-cutting：One of expansion joint (E.J.) is cut every 400 meters in upper layer 31, the slit width of expansion joint (E.J.) is 20mm, is cut every 6.5m
One of expansion joint, width 19-24mm；
Step 7, it conserves：It sprinkles water on present upper layer 31, when having the water layer of 3-4mm on upper layer 31, gunnysack is covered
It covers on upper layer 31, and sprays 2-3 times daily to keep road surface to moisten, curing time is 28 days or so；
Step 8, the cementation of fissures：Expansion joint (E.J.), the sawdust sewed on of contracting removed first with giant it is clean, then by pitch or close
Sealing is filled into expansion joint (E.J.) and contracting seam, and the depth of perfusion is 7-8cm, so that moisture is not easy after expansion joint (E.J.), contracting seam are sealed
It is entered in base 2 and bed course 1 from expansion joint (E.J.) and contracting seam, so that road is not easy expansion and cause knife face structural destruction, extend road face
Service life.
During being laid with base 2, face layer 3, vibrated roller shakes in static pressure, gently, Qiang Zhen, final pressure during, be by
Both sides of the road carry out rolling work to centre, in the roller compaction process by outer lateral centre, roll each time route with it is previous
The edge 20cm of the secondary route rolled is overlapped, and the speed rolled is 2.5km/h.
Embodiment 2：A kind of cement road construction method, difference from example 1 is that, as shown in figure 3, being laid with
After good rubble 2 22, before spraying heat absorbent 23, first spread copper powder 24, the spread quantity of copper powder 24 are on rubble 2 22
0.35kg/m2, when heat absorbent 23 is sprayed onto on rubble 2 22, in the work of vibrated roller and heat absorbent 23 mobility of itself
Under, copper powder 24 can be together brought into the hole of rubble 1, rubble 2 22 by heat absorbent 23, so rubble 1,
When the heat of 2 22 receiving plane layer 3 of rubble, copper powder 24 also can timely suck the heat of rubble 1, rubble 2 22, into
And reduce the temperature of rubble 1, rubble 2 22 so that rubble 1, rubble 2 22 are not easy to expand, and copper powder 24 is swollen in heat absorption
It, should not be by rubble 1, rubble two since the hole between rubble 2 22 is capable of providing enough expansion spaces after swollen
22 strut, and then keep face layer 3 not easy to crack.
Embodiment 3：A kind of cement road construction method, difference from example 1 is that, as shown in Figures 4 and 5, gold
Belonging to net 4 is connected and composed by tied silk 43 by the threaded steel pipe 41 of a diameter of 1.5cm and the reinforcing bar 1 of a diameter of 0.5cm,
When being placed into cutting optimal 32, threaded steel pipe 41 is vertical with the length direction of road, and reinforcing bar 1 is parallel with the length direction of road；
During upper layer 31 pours completion and conserved, one end of threaded steel pipe 41, the other end are connected to by water pipe 52
It is connected in catch basin 5 by water pipe 52, so that the water in catch basin 5 is existed by connecting a suction pump 51 in one end of water pipe 52
41 inner recirculation flow of threaded steel pipe is logical, when conserve complete after, water pipe 52 is shed, is then worn in threaded steel pipe 41 and screw thread
The reinforcing bar 2 44 of 41 internal orifice dimension of steel pipe cooperation, to play the role of support to threaded steel pipe 41, threaded steel pipe 41 have compared with
Good heat conductivility, cooling water can carry out heat exchange with threaded steel pipe 41, to reduce the temperature of threaded steel pipe 41, then by
Threaded steel pipe 41 reduces the temperature inside cement concrete, makes inside cement concrete and surface layer is not easy to form the larger temperature difference,
And then it is not likely to produce chicken-wire cracking, reinforcing bar 2 44 is finally packed by the service life for improving face layer 3 after maintenance is completed
In threaded steel pipe 41, the compression strength of threaded steel pipe 41 is improved, and then makes road surface that there is more long service life.
This specific embodiment is only explanation of the invention, is not limitation of the present invention, people in the art
Member can as needed make the present embodiment the modification of not creative contribution after reading this specification, but as long as at this
It is all protected by Patent Law in the right of invention.
Claims (10)
1. a kind of cement road construction method, it is characterized in that：Include the following steps：
Step 1, the construction line-putting：The center line for delimiting road, is used in combination albarium to mark road profile；
Step 2 excavates roadbed slot：Roadbed slot is dug out in road profile by excavator, and road is rolled by vibrated roller
Foundation trench；
Step 3 is laid with bed course (1)：The rock-powder stablized with cement slag that moisture content is 12% is uniformly laid on roadbed slot and is formed
Bed course (1), the thickness of tiling are 20cm, and by vibrated roller static pressure 1 time, then are gently shaken by vibrated roller 2 times, finally
Carry out three-wheel final pressure 3 times；
Step 4 is laid with base (2)：It is uniformly laid on bed course (1) by gravelly base (2), the thickness of base (2)
For 30cm, heat absorbent (23) is sprayed in base (2), and gently shake by vibrated roller static pressure 1 time, then by vibrated roller
It 2 times, is shaken by force by vibrated roller 2 times later, finally carries out three-wheel final pressure 3 times；
Step 5, paved surface layer (3)：The cement concrete that concrete mixer truck is transported is poured in base (2), use is paved
Smash the device that shakes smash shake form it into thickness be 5cm below layer (32), then on layer (32) below be laid with metal mesh (4),
Then the cement concrete in concrete mixer truck is poured on metal mesh (4) again, is paved and carries out smashing to shake making with smashing the device that shakes
It is that the upper surface of 15cm layer (31), the both sides of metal mesh (4) protrude from the side of upper layer (31) that it, which forms thickness,；
Step 6, joint-cutting：It carries out cutting expansion joint and expansion joint (E.J.) after the cement concrete of upper layer (31) reaches initial set, stretch
It is divided between seam and is cut every 6.5m, and width is 1.9-2.4cm；
Step 7, maintenance：It first sprinkles water on upper layer (31), when having the water layer of 3-4mm on upper layer (31), gunnysack is covered
It covers on upper layer (31), and sprays 2-3 times daily to keep road surface to moisten, curing time is 28 days；
Step 8, the cementation of fissures：The sawdust on expansion joint and upper layer (31) is removed totally, by pitch or fluid sealant with giant
It is filled into expansion joint, the depth of perfusion is 7-8cm.
2. a kind of cement road construction method according to claim 1, it is characterized in that：The heat absorbent (23) includes paraffin
Powder, rubber powder, water mix, the paraffin powder, rubber powder, water mass ratio be 1:1.5:4.
3. a kind of cement road construction method according to claim 2, it is characterized in that：Before being laid with base (2), padding
One layer of rubber asphalt layer (11) is laid on layer (1), the thickness of the rubber asphalt layer (11) is 3cm.
4. a kind of cement road construction method according to claim 3, it is characterized in that：The rubble is including 70% grain size
The rubble one (21) and 30% grain size of 15-20mm is the rubble two (22) of 5-10mm；Bed course (1) first is arrived into rubble one (21) tiling
On, then rubble two (22) is taped against on rubble one (21), and the vibrated roller for being first 10 tons by weight before pressing exists
Base (2) is flattened with 6-8km/h under strong state of shaking.
5. a kind of cement road construction method according to claim 4, it is characterized in that：When being laid with bed course (1), first by rubble
One (21) are laid on rubber asphalt layer (11) and thickness is 5-7cm, and rubble two (22) is then laid on rubble one (21)
On, heat absorbent (23) is sprayed on rubble two (22), and the spread quantity of heat absorbent (23) is 0.5kg/m2, passes through weight later
The vibrated roller that amount is 10 tons i.e. vibration frequency under strong state of shaking is 45-70Hz, amplitude 0.8-2.0mm, rolling speed
The above-mentioned rubble one (21) laid, rubble two (22) are flattened for 6-8km/h, repeat the step 4-5 times.
6. a kind of cement road construction method according to claim 5, it is characterized in that：After being laid with rubble two (22),
Before spraying heat absorbent (23), the spread quantity of the spread metal powder on rubble two (22), the metal powder is 0.35kg/m2.
7. a kind of cement road construction method according to claim 6, it is characterized in that：The metal powder is copper powder (24).
8. a kind of cement road construction method according to claim 1, it is characterized in that：The metal mesh (4) is by a diameter of
The threaded steel pipe (41) of 1.5cm and the reinforcing bar one (42) of a diameter of 0.5cm are constituted, the threaded steel pipe (41) and reinforcing bar one (42)
Junction be attached by tied silk (43), the threaded steel pipe (41) is vertical with the length direction of road, the reinforcing bar one
(42) parallel with the length direction of road；
After metal mesh (4) laying and before maintenance is completed, cooling water is passed through in threaded steel pipe (41).
9. a kind of cement road construction method according to claim 8, it is characterized in that：After conserving completion, in screw thread
The reinforcing bar two (44) with the cooperation of threaded steel pipe (41) shape is worn in steel pipe (41).
10. a kind of cement road construction method according to claim 1, it is characterized in that：It is being laid with base (2), face layer (3)
In the process, vibrated roller shake in static pressure, gently, Qiang Zhen, final pressure during, be to carry out rolling work from both sides of the road to centre
Make, in the roller compaction process by outer lateral centre, it is heavy with the edge 20cm of the preceding route once rolled to roll route each time
It closes, and the speed rolled is 2.5km/h.
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| CN110409248A (en) * | 2019-07-24 | 2019-11-05 | 武汉交科工程咨询有限公司 | A kind of road construction method |
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| JP2603192B2 (en) * | 1994-03-05 | 1997-04-23 | 福井県 | Paved road containing heat storage material |
| CN101768909B (en) * | 2009-01-05 | 2012-02-29 | 龙建路桥股份有限公司 | Method for paving cement concrete pavement |
| CN203049402U (en) * | 2013-01-15 | 2013-07-10 | 长安大学 | Pavement capable of lowering environmental temperature of road surface |
| CN204940041U (en) * | 2015-07-22 | 2016-01-06 | 山西省交通科学研究院 | Concrete dynamic modulus cooling asphalt pavement structure |
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