CN104674627B - A kind of seam construction method preventing old cement concrete road to add black top reflection crack - Google Patents
A kind of seam construction method preventing old cement concrete road to add black top reflection crack Download PDFInfo
- Publication number
- CN104674627B CN104674627B CN201510077194.XA CN201510077194A CN104674627B CN 104674627 B CN104674627 B CN 104674627B CN 201510077194 A CN201510077194 A CN 201510077194A CN 104674627 B CN104674627 B CN 104674627B
- Authority
- CN
- China
- Prior art keywords
- old
- concrete
- seam
- cement
- hoof
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
-
- 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
- E01C7/35—Toppings or surface dressings; Methods of mixing, impregnating, or spreading them
Abstract
The present invention relates to a kind of seam construction method preventing old cement concrete road to add black top reflection crack, the old concrete panel needing seam to reinforce first carries out flexure difference between plate measure, after qualified, seam crossing at two pieces of old concrete panels cuts out equally spaced strip groove across seam, re-uses impact brill and strip groove end is carried out vertical drilling；According to hole depth, groove length and plate seam width, bent-up bar, complete Horse hoof muscle molding；After being implanted into shape of a hoof reinforcing bar with end vertical core in strip groove, in the boring after Xiang Qingkong, pour into epoxy resin anchoring adhesive；And mix cement Broken Stone Concrete pours, pour into forming bar planting protective layer in groove；Several layers of protection cover are spread the most successively on the upper strata of two pieces of old concrete panels.It is an advantage of the current invention that: by reducing the relative vertical displacement of old plate plate seam both sides, the generation of pre-Anti-reflective Crack of Overlaying and development, and then reduce or stop the appearance of old cement concrete road Laying Asphalt Surface Course reflection crack.
Description
Technical field
The present invention relates to Road and Traffic Engineering technical field, add black top particularly to one prevention old cement concrete road anti-
Penetrate the seam construction method in crack.
Background technology
Good non-deformability that cement concrete has and water stability, 19th century 80, the 90's various places a large amount of
Build cement concrete pavement.In current China much areas or urban road, cement concrete pavement faces maintenance and renovation, adopts
It is overlay asphalt overlay on old cement concrete road by more old cement concrete road renovation technique scheme.
Owing to old cement concrete road overlays the characteristic of asphalt overlay self structure, after using a period of time, asphalt overlaying cover
Layer easily occurs crack under the effect of vehicular load and temperature.The reason causing Laying Asphalt Surface Course reflection crack is old cement
The horizontal displacement of plate and the relative vertical displacement in plate seam both sides.It is traffic load that plate seam produces the reason of both sides vertical displacement.
For there is the cement concrete pavement of plat-bottom escape, the seam crossing of lower floor's old concrete plate, concrete slab cannot be followed soon
Basic unit deforms, can not collaborative work between concrete plate.Under Driving Loading, generation is compared by concrete surface laminate seam crossing
Considerable additional stress, makes structure be in unfavorable stress.Under the repeated action of traffic load, overlay is by two kinds
The repeated action of stress, the most as time went on, the upper and lower surface of overlay reflection crack position there will be reflection crack,
And along structural thickness Directional Extension, ultimately form the reflection crack of through whole overlay.For not occurring coming to nothing, layer
Between the good overlay road surface of contact conditions, traffic load is inconspicuous on the impact of the generation of reflection crack, but splits reflection
The extension being sewn in overlay produces extreme influence.Horizontal displacement is changed by ambient temperature and humidity and causes.The temperature in season
Degree change causes contraction and the expansion of cement plate, temperature and humidity change round the clock all can cause the deformation with regard to cement plate,
Thus cause the horizontal displacement of cement plate seam crossing, make overlay produce at Old cement concrete plate contact position
Stress is concentrated, and induction overlays the generation of end reflection crack layer by layer.Subsequently under the repeated action of traffic load, gradually edge, crack
Thickness direction runs through whole overlay.The size of horizontal displacement is relevant with the size of plate, and plate is the biggest, and horizontal displacement is the biggest.
For old cement concrete road overlays bituminous texture, vertical displacement should be major part cement pavement Laying Asphalt Surface Course layer reflection
The main cause that crack produces and develops.Therefore using suitable method to reduce vertical relative displacement between plate to the full extent is to prolong
The Main Means that slow reflection crack occurs.
The existing technical measures preventing reflection crack are concentrated mainly on the design of additional spreading course structure, have: (1) is strengthened Colophonium and added
Overlay thickness；(2) GSZ or geotextiles are added as waterproof layer；(3) utilize by the bonding interlock action of reinforcement material, increase
If netted reinforcing rib；(4) stress absorbing layer is set up, as arranged open gradation large grain size asphalt gravel stress absorbing layer.Scheme (1),
(4) position and the form of reflection crack appearance can be affected by increasing the thickness of overlay, but can not effectively slow down crack
Expansion rate prevent generation and the development of reflection crack.Meanwhile, the method for asphalt overlaying layer thickness is increased on the one hand by road
On the other hand the restriction of face absolute altitude, will increase road surface cost, and asphalt high-temerature creep in the case of summer high temperature
It is easily generated rut, the most just loses the advantage of strong basis sake produced by Deteriorated concrete pavement Ban Zuo basic unit.Scheme (2),
(3) limited to the effect of load effective width, but construction technology is more complicated, and it is unfavorable for that the interlayer overlaying composite construction resists
Cut.
Arranging seam between Cement Concrete Pavement Slab block is to eliminate the temperature stress caused by variations in temperature, preventing temperature
The produced pavement damage of degree change, but from the perspective of cement coagulates dirt road panel bearing load, the existence of plate seam
Weaken the globality of concrete slab, particularly travel through plate seam, the Relative vertical of plate seam both sides at wheel load
Displacement is the biggest, and the stress of old cement sheeting is concentrated the most obvious, and reflection crack disease is the most serious.
The repeated action of traffic load is the major incentive that old cement concrete road asphalt overlaying structure reflection crack occurs. number
Value Calculation results finds, during Vehicle Load, the heavy difference of former cement pavement seam crossing biside plate spring is excessive to be led
Cause bitumen layer bottom surface stress is excessive and ftractures, and then crack forms table crack, road to overlay extended surface. add for Colophonium
This failure mode of laying, should focus on during design in the control of flexure poor and average to former cement pavement flexure.
Under different overlay depth information, changing with flexure difference, overlay bottom surface seam crossing shear stress has essentially identical change
Rule.I.e. flexure difference is less, increases with flexure difference, and surface layer shear stress increases sharply;When flexure difference increases to a certain degree
After, shear stress presents the trend of being slowly increased. and this Changing Pattern illustrates, during repaving asphalt coat, if former cement pavement connects
At seam, load transfer situation is the best, and the Reflective Crack in Asphalt Overlays cracking life-span relies primarily on former cement pavement seam crossing load transfer energy
The speed of power decay;If flexure difference is in higher level, so shear stress of asphalt overlay is at holding from starting overlay
Continuous higher level, the speed that reflection crack occurs will ratio comparatively fast, now the cracking life-span of overlay depends on and adds
The thickness of laying.But the appearance delaying shearing-type reflection crack by increasing the thickness of overlay is uneconomic.Therefore,
Before repaving asphalt coat, the former cement pavement seam crossing flexure difference of strict control is the most effective measure that delayed reflex crack occurs.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of seam preventing old cement concrete road to add black top reflection crack
Building method, poor to control former cement pavement seam crossing flexure, prevent from and slow down old cement concrete road overlay asphalt overlay reflection splitting
The appearance of seam.
For solving above-mentioned technical problem, the technical scheme is that a kind of prevention old cement concrete road adds black top reflection
The seam construction method in crack, it is characterised in that described step is:
A) the flexure pretreatment of old concrete panel: the two pieces of old concrete panels needing seam to reinforce are carried out between plate curved
Heavy difference measures, and picks out flexure difference and measures the old concrete panel of super more than 0.04mm；
B) bar planting pretreatment: flexure difference measured value is carried out bar planting pretreatment at the old concrete panel of more than 0.04mm,
Vehicle Load additional stress concentrated area at two pieces of old concrete slab joints cuts out equally spaced bar shaped across seam
Groove, and each strip groove is set to bar planting position；Strip groove end is carried out vertical drilling, and this hole extends to position
In the inside of Deteriorated concrete pavement panel lower end basic unit, form the boring of vertical direction；
C) cleaning: purging carries out clear groove, clear hole processes to utilize hair-dryer to carry out strip groove and boring；
D) shape of a hoof formed reinforcing steel bars: according to hole depth, groove length and plate seam width, spiral two ends are bent into
The shape of a hoof, completes shape of a hoof formed reinforcing steel bars；
E) bar planting: vertically implant shape of a hoof reinforcing bar along strip groove direction, shape of a hoof reinforcing bar two ends dogleg section is inserted
In boring；
F) encapsulating: pour into epoxy resin anchoring adhesive in boring, until 2/3 position of hole depth；
G) bar planting protective layer makes: mix cement stabilized macadam pours in ingoing silver connected in star and blocks boring, ultimately forms bar planting
Protective layer, and maintenance；
H) follow-up asphalt overlaying cover structure: spread emulsifying drip on the upper strata of two pieces of old concrete panels the most successively
Blue or green permeable layers oil reservoir, asphalt macadam fiber sealing, coarse grain formula bitumen concrete layer, emulsified asphalt adhesion coating oil reservoir, middle grain formula bitumen concrete layer, breast
Change Colophonium adhesion coating, asphalt-mastic-broken stone layer.
Preferably, for the flexure difference measured value old concrete panel more than 0.06mm in described step a, step is being carried out
B advance andante grouting treatment；Grouting material selects cement mortar, comprcssive strength >=15Mpa, and the gradation composition of cement mortar is:
Cement: water=1.0:5, then on the basis of cement mortar gross mass, add aluminium powder 0.001wt%, early strength agent 0.01wt%.
Preferably, in described step b, strip groove cut direction is to be parallel to the side that on old concrete panel, vehicle travels
To, its longitudinal length is the 1/25 of the long limit of old concrete panel, and width and the diameter compatible of shape of a hoof reinforcing bar, the degree of depth is old coagulation
The 1/3-1/4 of soil plate thickness, the adjacent spacing between strip groove is 100-120cm, outermost strip groove distance
Old concrete panel edges of boards are 30-45cm.
Preferably, in described step b, the diameter of boring stretches into Deteriorated concrete pavement than the Horse hoof big 4-6mm of muscle diameter, boring
Panel lower end basic unit 4-6cm.
Preferably, in described step d, shape of a hoof reinforcing bar is the spiral of diameter 20-35mm, shape of a hoof reinforcing bar overall length
L muscle=L bar+2*H plate+2*5cm+L seam, wherein, L bar is the length of strip groove, and H plate is old concrete panel thickness of slab, and L seam is
Plate seam width between two old concrete panels, degree of depth 3-5cm of old concrete panel bottom base implanted by shape of a hoof reinforcing bar.
Preferably, in described step g, asphalt macadam fiber seal coat thickness is 0.8cm, and coarse grain formula bitumen concrete layer thickness is
8cm, middle grain formula bitumen concrete layer thickness is 5cm, and asphaltum with high viscosity mastic-broken stone layer thickness is 4cm；Described coarse grain formula bitumen concrete
The label that protective layer uses is that in AC-25C, middle grain formula bitumen concrete protective layer, the label of employing is AC-16C, asphaltum with high viscosity agate
The label used in hoof fat crushed stones layer is SMA-13.
It is an advantage of the current invention that: by implanting shape of a hoof screw-thread steel between the seam crossing of two blocks of existing cement-concrete pavement plates
Muscle, it is possible to together with closely bonding with existing cement-concrete pavement plate, forms " bolt-lock " effect, on the one hand can control old concrete road
Between the width of slight crack at slab joint, the most effectively suppressing plate, crack extends to top asphalt overlay, reduces old plate plate
The relative vertical displacement of seam both sides, the generation of pre-Anti-reflective Crack of Overlaying and development, and then reduce or stop Laying Asphalt Surface Course reflection
The appearance in crack.
Old cement concrete road also overlays asphalt macadam fiber sealing, coarse grain formula bitumen concrete, middle grain formula bitumen concrete protective layer,
Asphaltum with high viscosity mastic-broken stone surface layer and modified emulsifying asphalt tack coat, by strengthening the anti-of Old cement road panel block seam
Water, interlayer adhesion and flexure performance, thus realize the purpose preventing old cement concrete road to overlay asphalt pavement reflection crack.
The flexure difference of existing cement-concrete pavement plate, before carrying out bar planting, is first measured, to measured value at 0.04-by this method
The existing cement-concrete pavement plate of 0.06mm carries out bar planting, and for measured value existing cement-concrete pavement plate advanced person's andante more than 0.06mm
Bar planting again after grouting treatment, by above-mentioned process, thus ensures to treat the intensity of the existing cement-concrete pavement plate of bar planting, it is ensured that bar planting
Effectively carry out.
Length, width and spacing to strip groove, the diameter of shape of a hoof reinforcing bar, length, asphalt macadam fiber sealing
These data such as thickness reasonably design, to guarantee that preventing and slow down old cement concrete road to greatest extent overlays asphalt overlay
The appearance of reflection crack.
Filling epoxy resin consolidation glue and water in gap between vertical drilling hole wall, groove cell wall and shape of a hoof reinforcing bar
Mud rubble protective layer, epoxy glue layer enhances shape of a hoof reinforcing bar cooperative work performance, and cement stabilized macadam protective layer is protected also
Strengthen the structure of shape of a hoof reinforcing bar.
Accompanying drawing explanation
Fig. 1 is the bar planting planar cloth of seam construction method that the prevention old cement concrete road of the present invention adds black top reflection crack
Seated position schematic diagram.
Fig. 2 is that the seam crossing of the seam construction method preventing old cement concrete road to add black top reflection crack of the present invention constructs
Arrange schematic diagram.
Detailed description of the invention
Embodiment 1
In the present embodiment, the first flexure pretreatment of old concrete panel, to the two blocks of old concretes needing seam to reinforce
Panel carries out flexure difference between plate and measures, and picks out flexure difference and measures the old concrete panel between super 0.04-0.06mm.
For flexure difference old concrete panel between 0.04-0.06mm, its face adds the seam of black top reflection crack
Building method is realized by following step:
The first step, bar planting pretreatment: the Vehicle Load additional stress at the seam 10 of two pieces of old concrete panels 8
Concentrated area cuts out equally spaced strip groove 13 across seam, and this strip groove 13 is bar planting position, re-uses impact brill right
The end of strip groove 13 carries out vertical drilling, and this hole extends to be positioned at the basic unit 9 of old concrete panel 8 lower end
Portion, forms the boring of vertical direction.
The structure of strip groove 13 is specifically as shown in schematic diagram 1, and strip groove cut direction is for being parallel to old concrete face
The direction that on plate, vehicle travels, the 1/25 of the long limit of a length of old concrete panel plate of strip groove 13, strip groove 13
Width and the diameter compatible of shape of a hoof reinforcing bar, the degree of depth of strip groove 13 is the 1/3-1/4 of old concrete plate thickness,
Finite element analysis and test result indicate that, old concrete panel traffic load affects most unfavorable combination near edges of boards
Edge position is span of slab 1/10, say, that really play being mainly at plate marginal area of protective action；With regard to bar planting spacing and
For quantity, the most intensive weakening to plate of bar planting is the most obvious, and when bar planting quantity had the most not only been wasted material but also taken a lot of work, protection effect is but
Undesirable.Therefore, in the present invention, the adjacent spacing between two strip grooves 13 controls at 100-120cm, outermost bar
Connected in star 13 is 30-45cm apart from the edges of boards of old concrete panel 8.
In above-mentioned steps, when strip groove 13 and end hole 11 are shaped, should reduce two pieces old mixed as far as possible
The damage of solidifying soil panel 8 plate, it is to avoid plate cracking and the globality of guarantee plate, equating, side are wanted in the bottom of strip groove 13
Face is preferably repaired close to vertical, the diameter 4mm-6mm bigger than the diameter of shape of a hoof reinforcing bar 12 of the drill bit that impact is bored, the hole depth rate of boring
After fluting, old concrete panel is thick > 4cm, old concrete panel thickness 4-6cm after the hole depth rate fluting of general boring,
Second step, cleaning: purging carries out clear groove, clear hole processes to utilize hair-dryer to carry out strip groove and boring；
3rd step, shape of a hoof formed reinforcing steel bars: according to hole depth, groove length and plate seam width, by spiral two ends
It is bent into the shape of a hoof, completes shape of a hoof formed reinforcing steel bars；
The concrete structure of shape of a hoof reinforcing bar 12 is as shown in schematic diagram 2, and it uses the spiral of diameter 20-35mm, Horse hoof
Shape reinforcing bar overall length L muscle=L bar+2*H plate+2*5cm+L seam, wherein, L bar is the length of strip groove, and H plate is old concrete panel
Thickness of slab, L seam is plate seam width between two old concrete panels, and the degree of depth of old concrete panel bottom base implanted by shape of a hoof reinforcing bar
3-5cm。
4th step, bar planting: vertically implant shape of a hoof reinforcing bar, shape of a hoof reinforcing bar two ends dogleg section along strip groove direction
Insert in boring；
5th step, encapsulating: pour into epoxy resin anchoring adhesive in boring, until 2/3 position of hole depth；Should ensure that insertion
The gap that after bar planting, glue is full of between hole wall and reinforcing bar, it is ensured that good water permeability resistance energy.
6th step, bar planting protective layer makes: in mix cement stabilized macadam pours ingoing silver connected in star 13 and block boring, end form
Become bar planting protective layer, and maintenance；In this step, the cement stabilized macadam concrete poured uses the cement into label C20-C40.
7th step, follow-up asphalt overlaying cover structure: be specifically distributed as shown in schematic diagram 2, in two pieces of old concrete faces
The upper strata of plate 8 spread the most successively emulsification pitch penetration oil reservoir 7, asphalt macadam fiber sealing 6, coarse grain formula bitumen concrete layer 5,
Emulsified asphalt adhesion coating oil reservoir 4, middle grain formula bitumen concrete layer 3, emulsified asphalt adhesion coating 2, asphaltum with high viscosity mastic-broken stone laminate 1.Its
In, in more crucial each protective layer: asphalt macadam fiber seal coat thickness is 0.8cm, and coarse grain formula bitumen concrete layer thickness is 8cm,
Middle grain formula bitumen concrete layer thickness is 5cm, and asphaltum with high viscosity mastic-broken stone layer thickness is 4cm.
In this step, the label that coarse grain formula bitumen concrete protective layer 5 uses is AC-25C, middle grain formula bitumen concrete protective layer 3
The label of middle employing is AC-16C, and use in asphaltum with high viscosity mastic-broken stone concrete topping 1 is numbered SMA-13.
Embodiment 2
In the present embodiment, the two pieces of old concrete panels needing seam to reinforce are carried out flexure difference between plate and measures, pick out
The flexure difference measured value old concrete panel more than 0.06mm.
For flexure difference more than the old concrete panel between 0.06mm, it is carrying out adding the seam of black top reflection crack
During process, need on the basis of embodiment 1, before old concrete panel is carried out bar planting pretreatment, first to regard to concrete
Panel carries out plate grouting treatment so that between plate, flexure difference is less than flexure difference feasible value, it is simple to meets and designs standard-required, and really
Protect effectiveness and the success rate of follow-up bar planting.Grouting material selects cement mortar, comprcssive strength >=15Mpa, the level of cement mortar
Combo becomes: cement: water=1.0:5, then on the basis of cement mortar gross mass, adds aluminium powder 0.001wt%, early strength agent
0.01wt%.If interpolation additive, then water by product requirement and can refer to " Technical code for application of admixture in concrete "
GB50119-2013 performs.
The principle of the method for the present invention is: implant the rigidity of muscle (muscle of implantation is shape of a hoof reinforcing bar) more than coagulating cement
The rigidity of soil, produces small vertical displacement at old concrete panel 5 at seam crossing poor, and i.e. between assay plate, flexure difference exceedes necessarily
Limit value (> 0.04mm), implant muscle and there is at plate seam transmission moment of flexure and the effect of shearing, improve the co-ordination energy between plate
Power, contributes to reducing deformation and the additional stress of edges of boards, implants muscle and forward and backward for direction of traffic adjacent panels is bound up so that
Implant and between muscle and the plate of old concrete panel 5, carry out stresses re-distribution and compatible deformation, improve old cement concrete road and overlay drip
The integral anti-shearing of blue or green cover structure and overall tensile strength.
Shape of a hoof reinforcing bar 12 can be formed " bolt-lock " effect, can control water together with old concrete panel 8 tight bond
The width in cement concrete seam crossing crack, between effective suppressing plate, crack extends to top asphalt overlay, prevents overlay surface
Form reflection crack.
For having produced flexure difference between plate more than 0.06mm, old plate grouting treatment to be carried out, adjust between plate flexure poor
Less than 0.06mm, reduce the additional stress that plat-bottom escape brings.
The ultimate principle of the present invention and principal character and advantages of the present invention have more than been shown and described.The technology of the industry
Personnel, it should be appreciated that the present invention is not restricted to the described embodiments, simply illustrating this described in above-described embodiment and description
The principle of invention, without departing from the spirit and scope of the present invention, the present invention also has various changes and modifications, and these become
Change and improvement both falls within scope of the claimed invention.Claimed scope by appending claims and
Equivalent defines.
Claims (6)
1. the seam construction method preventing old cement concrete road to add black top reflection crack, it is characterised in that step is:
A) the flexure pretreatment of old concrete panel: the two pieces of old concrete panels needing seam to reinforce are carried out flexure between plate poor
Measure, pick out flexure difference and measure the old concrete panel of super more than 0.04mm；
B) bar planting pretreatment: flexure difference measured value is carried out bar planting pretreatment at the old concrete panel of more than 0.04mm, two
Vehicle Load additional stress concentrated area at block old concrete slab joint cuts out equally spaced strip groove across seam,
And each strip groove is set to bar planting position；Strip groove end is carried out vertical drilling, and this hole extends to be positioned at old
The inside of cement concrete slab lower end basic unit, forms the boring of vertical direction；
C) cleaning: purging carries out clear groove, clear hole processes to utilize hair-dryer to carry out strip groove and boring；
D) shape of a hoof formed reinforcing steel bars: according to hole depth, groove length and plate seam width, spiral two ends are bent into Horse hoof
Shape, completes shape of a hoof formed reinforcing steel bars；
E) bar planting: vertically implant shape of a hoof reinforcing bar along strip groove direction, shape of a hoof reinforcing bar two ends dogleg section is inserted in boring；
F) encapsulating: pour into epoxy resin anchoring adhesive in boring, until 2/3 position of hole depth；
G) bar planting protective layer makes: mix cement stabilized macadam pours in ingoing silver connected in star and blocks boring, ultimately forms bar planting protection
Layer, and maintenance；
H) follow-up asphalt overlaying cover structure: spread emulsified asphalt the most successively on the upper strata of two pieces of old concrete panels saturating
Layer oil reservoir, asphalt macadam fiber sealing, coarse grain formula bitumen concrete layer, emulsified asphalt adhesion coating oil reservoir, middle grain formula bitumen concrete layer, emulsifying drip
Blue or green adhesion coating, asphalt-mastic-broken stone layer.
Prevention old cement concrete road the most according to claim 1 adds the seam construction method of black top reflection crack, its feature
It is: for the flexure difference measured value old concrete panel more than 0.06mm in described step a, carrying out step b advance andante
Grouting treatment；Grouting material selects cement mortar, comprcssive strength >=15Mpa, and the gradation composition of cement mortar is: cement: water=
1.0:5, then on the basis of cement mortar gross mass, add aluminium powder 0.001wt%, early strength agent 0.01wt%.
Prevention old cement concrete road the most according to claim 1 adds the seam construction method of black top reflection crack, its feature
Being: in described step b, strip groove cut direction is to be parallel to the direction that on old concrete panel, vehicle travels, and it is longitudinally
The diameter compatible of the 1/25 of a length of long limit of old concrete panel, width and shape of a hoof reinforcing bar, the degree of depth is that old concrete panel is thick
The 1/3-1/4 of degree, the adjacent spacing between strip groove is 100-120cm, outermost strip groove distance old concrete
Panel edges of boards are 30-45cm.
Prevention old cement concrete road the most according to claim 1 adds the seam construction method of black top reflection crack, its feature
Being: in described step b, the diameter of boring stretches into end group under Deteriorated concrete pavement panel than the Horse hoof big 4-6mm of muscle diameter, boring
Layer 4-6cm.
Prevention old cement concrete road the most according to claim 1 adds the seam construction method of black top reflection crack, its feature
Being: in described step d, shape of a hoof reinforcing bar is the spiral of diameter 20-35mm, shape of a hoof reinforcing bar overall length L muscle=L bar+2*
H plate+2*5cm+L stitches, and wherein, L bar is the length of strip groove, and H plate is old concrete panel thickness of slab, and L seam is two old concretes
Plate seam width between panel, degree of depth 3-5cm of old concrete panel bottom base implanted by shape of a hoof reinforcing bar.
Prevention old cement concrete road the most according to claim 1 adds the seam construction method of black top reflection crack, its feature
Being: in described step g, asphalt macadam fiber seal coat thickness is 0.8cm, and coarse grain formula bitumen concrete layer thickness is 8cm, middle grain formula
Bitumen concrete layer thickness is 5cm, and asphaltum with high viscosity mastic-broken stone layer thickness is 4cm；Described coarse grain formula bitumen concrete protective layer uses
Label be in AC-25C, middle grain formula bitumen concrete protective layer use label be AC-16C, asphaltum with high viscosity mastic-broken stone layer
The label of middle employing is SMA-13.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510077194.XA CN104674627B (en) | 2015-02-13 | 2015-02-13 | A kind of seam construction method preventing old cement concrete road to add black top reflection crack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510077194.XA CN104674627B (en) | 2015-02-13 | 2015-02-13 | A kind of seam construction method preventing old cement concrete road to add black top reflection crack |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104674627A CN104674627A (en) | 2015-06-03 |
| CN104674627B true CN104674627B (en) | 2016-08-17 |
Family
ID=53310174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510077194.XA Active CN104674627B (en) | 2015-02-13 | 2015-02-13 | A kind of seam construction method preventing old cement concrete road to add black top reflection crack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104674627B (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105956241B (en) * | 2016-04-25 | 2018-12-21 | 长安大学 | A kind of determination method of Void Under Concrete Pavement Slab grouting material performance |
| CN105975653B (en) * | 2016-04-25 | 2019-05-03 | 长安大学 | A kind of cement concrete pavement grouting material Moisture Damage simulating analysis |
| CN106087706B (en) * | 2016-07-22 | 2018-04-03 | 中铁第四勘察设计院集团有限公司 | The wet seam attachment structure of precast body and its wet connect dry make construction method |
| CN106436525B (en) * | 2016-09-27 | 2018-10-16 | 南通大学 | A kind of old concrete road surface inhibits the composite construction and remodeling method of reflection crack |
| CN107044080B (en) * | 2016-12-07 | 2019-11-08 | 华南农业大学 | A kind of concrete panel crack steel plate sewing method |
| CN109811609B (en) * | 2019-03-18 | 2024-03-12 | 上海市城市建设设计研究总院（集团）有限公司 | Joint structure of prefabricated assembled concrete base plate |
| CN109914215B (en) * | 2019-04-22 | 2021-03-16 | 中国港湾工程有限责任公司 | Construction method for preventing and controlling reflection cracks of airport pavement overlay |
| CN111074762B (en) * | 2019-12-11 | 2021-08-31 | 南通大学 | Seamless expansion joint of compound concrete bridge face of carbon cloth |
| CN112176817A (en) * | 2020-08-20 | 2021-01-05 | 中冶天工集团有限公司 | Method for treating cracks of base panel of road reconstruction project |
| CN112942090B (en) * | 2021-01-27 | 2022-09-23 | 河南中交路通工程监理咨询有限公司 | Construction process of road and bridge structure with large-particle-size asphalt concrete |
| CN113175236A (en) * | 2021-05-18 | 2021-07-27 | 宁波市建设集团股份有限公司 | Novel injection method chemical bar planting construction method |
| CN113642083A (en) * | 2021-08-25 | 2021-11-12 | 中交路桥北方工程有限公司 | Special-shaped splicing design method for new and old roads |
| CN114457714A (en) * | 2022-02-22 | 2022-05-10 | 南通大学 | Prefabricated intelligent luminous pavement structure and installation method thereof |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100605636B1 (en) * | 2004-07-02 | 2006-08-01 | 의왕개발 주식회사 | Closing form for Concrete pavement |
| DE102004061165A1 (en) * | 2004-12-16 | 2006-07-06 | Pfleiderer Infrastrukturtechnik Gmbh & Co. Kg | Concrete carriageway for rail vehicles |
| KR100628749B1 (en) * | 2006-06-19 | 2006-10-02 | (주)미래기술단 | L-shaped slope of assembly for road |
| CN102102340B (en) * | 2010-12-28 | 2011-10-26 | 河北路桥集团有限公司 | Installation method of bridge expansion and contraction device |
| CN103194949B (en) * | 2013-04-03 | 2015-05-20 | 西安公路研究院 | Structure and method for repairing cracks of oblique prestressed cement concrete pavement |
-
2015
- 2015-02-13 CN CN201510077194.XA patent/CN104674627B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104674627A (en) | 2015-06-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104674627B (en) | A kind of seam construction method preventing old cement concrete road to add black top reflection crack | |
| CN102505606B (en) | Processing method for cracks when asphalt layer is additionally paved on cement road surface | |
| CN106436525B (en) | A kind of old concrete road surface inhibits the composite construction and remodeling method of reflection crack | |
| CN102409589B (en) | Construction method for joining new and old pavements in road widening project | |
| CN204139019U (en) | The strong cracking resistance coiled material of road surface structure floor height | |
| CN212956011U (en) | Asphalt concrete composite pavement reconstructed from cement pavement | |
| CN108457150A (en) | A kind of road widening project anticracking crack structure and its construction method | |
| CN102051848B (en) | HMA/CC (Hot-Mix Asphalt)/(Cement Concrete) composite type pavement structure and constructing method thereof | |
| CN107313320A (en) | The embedded reinforcement asphalt pavement structure of cement concrete pavement and construction method | |
| CN108547195A (en) | A kind of porous asphalt pavement structure and construction method | |
| CN204982575U (en) | Continuous arrangement of reinforcement concrete slab combined type road surface | |
| CN104631268B (en) | A kind of concrete road pavement structure | |
| CN203947406U (en) | The flexible splicing construction of new and old bridge longitudinal elasticity concrete | |
| CN209307882U (en) | It is a kind of for improving the cushion cap device on pile foundation reinforcement basis | |
| CN104927759B (en) | A kind of interface adhesive material and black overlay structure and its construction technology of changing in vain based on the material | |
| CN106192658A (en) | The pavement structure of traffic route | |
| CN105178130A (en) | Composite pavement structure for urban down-traversing pavement and construction method | |
| CN204753292U (en) | Spread structure with adding of black top layer on cement road surface | |
| CN208201551U (en) | A kind of cooling noise reduction Urban Asphalt Pavement structure | |
| Vanelstraete et al. | Laboratory testing and numerical modeling of overlay systems on cement concrete slabs | |
| CN207552833U (en) | A kind of elevated bridge basal perimeter ground road structure | |
| CN103321123B (en) | A kind of construction method of highway pavement | |
| CN211815250U (en) | Road widening roadbed splicing structure | |
| Vanelstraete et al. | Crack prevention and use of overlay systems | |
| CN107022954A (en) | A kind of bridge deck water-proof tack coat, its preparation method and application |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200825 Address after: Group 3, Shiqiao village, Qianqiao Town, Fengxian District, Shanghai, 201424 Patentee after: SHANGHAI SHISHEN INDUSTRY AND TRADE Co.,Ltd. Address before: 226000 Jiangsu Province, Nantong City Chongchuan District sik Road No. 9 Patentee before: NANTONG University |