CN107435319A - High altitude localities asphaltic concrete core wall rapid constructing method - Google Patents
High altitude localities asphaltic concrete core wall rapid constructing method Download PDFInfo
- Publication number
- CN107435319A CN107435319A CN201710587149.8A CN201710587149A CN107435319A CN 107435319 A CN107435319 A CN 107435319A CN 201710587149 A CN201710587149 A CN 201710587149A CN 107435319 A CN107435319 A CN 107435319A
- Authority
- CN
- China
- Prior art keywords
- temperature
- lower floor
- asphalt concrete
- layer
- concrete layer
- 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.)
- Granted
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
- E02B7/02—Fixed barrages
- E02B7/04—Dams across valleys
- E02B7/08—Wall dams
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/26—Bituminous materials, e.g. tar, pitch
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0098—Bitumen
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Civil Engineering (AREA)
- Ceramic Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Road Paving Structures (AREA)
- Road Paving Machines (AREA)
Abstract
The invention discloses a kind of high altitude localities asphaltic concrete core wall rapid constructing method, including：By the disposable making simultaneously of bituminous concrete and Transition Materials on bituminous concrete pedestal, to form asphalt concrete layer and a pair of transition bed of materials positioned at asphalt concrete layer both sides on pedestal；Three rollers beyond existing codes and standards are used to be rolled with isosceles triangle distribution to asphalt concrete layer and a pair of transition bed of materials；Repeat the above steps, using disposable making simultaneously, the super method ground weight standard and rolled, form asphaltic concrete core wall of the adjacent interlayer without faying face and a pair of Transition Materials bands positioned at asphaltic concrete core wall both sides.The method of the present invention, making simultaneously disposable to bituminous concrete and Transition Materials, making efficiency high, rolled simultaneously using three rollers after making, roll efficiency high, the heat for reducing the bituminous concrete after paving scatters and disappears speed, can directly pave bituminous concrete in face directly over, working procedure is reduced, improves efficiency of construction.
Description
Technical field
The present invention relates to Hydraulic and Hydro-Power Engineering field, more particularly to a kind of high altitude localities asphaltic concrete core wall quickly to apply
Work method.
Background technology
With the fast development of domestic water conservancy construction of hydropower plant, process range, depth, earth formation present complicate,
Diversification.In the prior art, when carrying out asphalt concrete core dam construction, need to often be carried out according to WR and hydropower construction specification,
As provided in specification：
1st, could be constructed when the lowest temperature is less than 5mm more than 0 DEG C, wind-force less than 4 grades, intra day ward；
2nd, during asphalt concrete, the skin temperature for the lower floor's asphalt concrete layer formerly laid need to be 70
It can just continue more than DEG C in asphalt concrete layer in laying above；
3rd, the thickness of the asphalt concrete layer of individual layer laying can not be more than 25cm；
4th, after asphalt concrete, rolled using the small vibrating less than 1.5t, to ensure laying
Bituminous concrete is compacted；
5th, when carrying out asphalt concrete core dam construction, alkaline bone material need to be used, bitumen aggregate ratio 6.8%-7.1% it
Between；
6th, when progress dam shell material fills, when the lowest temperature is below -10 DEG C, to stop constructing.
According to above-mentioned specification, in more than 3000 meters of height above sea level, often occur daily minimal tcmperature less than 0 DEG C, wind-force be more than 4 grades,
Intra day ward is more than 5mm situation, will can not now carry out the construction of asphalt concrete core dam.
But due to the development of Hydraulic and Hydro-Power Engineering construction, need often in high altitude localities operation, these areas are high and cold to be lacked
Oxygen, rarefaction of air, daily minimal tcmperature are even less than -20 DEG C, and long-term wind-force is more than 4 grades, and there is small sleet when, and (intra day ward is sometimes big
In 10mm), in these areas, the composition physical and mechanical property of asphalt material and bituminous concrete can be by altitude environment factor
Influence, it is therefore desirable to for these regional actual conditions develop it is a kind of be both suitable to local condition, also ensure that construction quality and
Safety, the construction method for improving efficiency of construction.
The content of the invention
The purpose of the present invention is exactly to overcome the above-mentioned problems of the prior art, there is provided a kind of high altitude localities pitch
Concrete core-wall rapid constructing method, the characteristics of for high altitude localities, bituminous concrete and Transition Materials are disposably spread simultaneously
Build, making efficiency high, rolled simultaneously using three rollers after making, raising rolls efficiency, reduces the pitch coagulation after paving
The heat of soil scatters and disappears speed, can directly pave bituminous concrete in face directly over, so as to reduce working procedure, be greatly improved and apply
Work efficiency rate.
In order to realize the above-mentioned purpose of the present invention, high altitude localities asphaltic concrete core wall rapid constructing method of the invention
Including：
Prepare the bituminous concrete using the local sand gravel of high altitude localities as aggregate；
Prepare the Transition Materials using local sand gravel as raw material；
By the disposable making simultaneously of the bituminous concrete prepared and Transition Materials on the pedestal of bituminous concrete, so as to
Asphalt concrete layer and a pair of transition bed of materials positioned at asphalt concrete layer both sides are formed on pedestal；
To be rolled beyond the existing roller for grinding weight standard to asphalt concrete layer and the transition bed of material, so that after grinding eventually
Bituminous concrete mean porosities be less than 2%；
Repeat the above steps, successively using described disposable same on the asphalt concrete layer and the transition bed of material laid
When making, the super method ground weight standard and rolled, form asphaltic concrete core wall of the adjacent interlayer without faying face and mixed positioned at pitch
Coagulate a pair of Transition Materials bands of native core-wall both sides；
Wherein, the high altitude localities refers to the area of more than 3000 meters of height above sea level.
Wherein, the bituminous concrete includes：Coarse aggregate, fine aggregate, filler and pitch, wherein, coarse aggregate, fine aggregate,
The mass percent of filler is：53:30:17-55:32:13, bitumen aggregate ratio 6.7%-7.3%.
Wherein, the stone roller of the roller beyond existing stone roller weight standard is great in 2 tons, and more rollers grind in isosceles triangle
Pressure.
Wherein, the isosceles triangle roll be by for roll the roller of the asphalt concrete layer it is preceding, for grinding
A pair of rollers of a pair of transition bed of materials are pressed rear, while the method that walking rolls.
Wherein, during successively asphalt concrete layer, the temperature of timing detection lower floor asphalt concrete layer is passed through
Degree, instruct the paving process of bituminous concrete to pave in the above.
Wherein, by the temperature of timing detection lower floor asphalt concrete layer, the bituminous concrete to pave in the above is instructed
Paving process include：
After lower floor's asphalt concrete layer has been laid, the temperature of detection lower floor asphalt concrete layer is to obtain temperature number
According to；
According to temperature data, if the skin temperature of lower floor's asphalt concrete layer is less than 70 DEG C, it is determined that will be in lower floor's pitch
The outlet temperature and paving material for the bituminous concrete to be laid that concrete layer is laid above；
After the outlet temperature for determining bituminous concrete to be laid, the mix temperature of bituminous concrete to be laid is entered
Row regulation, so that the temperature of the bituminous concrete exported at the machine outlet of mixing building reaches the outlet temperature；
The bituminous concrete to be laid for being up to the outlet temperature is transported at lower floor's asphalt concrete layer, and will be treated
Asphalt concrete is laid immediately on above lower floor's asphalt concrete layer with the paving material, will pass through what is currently laid
Bituminous concrete heating lower floor asphalt concrete layer, formed docked with lower floor asphalt concrete layer without the upper drip with reference to layering face
Blue or green concrete layer.
Wherein, after lower floor's asphalt concrete layer has been laid, the temperature of detection lower floor asphalt concrete layer is to obtain temperature
Degrees of data includes：
After lower floor's asphalt concrete layer has been laid, regularly the top layer to lower floor's asphalt concrete layer and top layer with
Under each wall carry out temperature detection, to obtain the top layer of lower floor's asphalt concrete layer and each wall after laying
Fixed time temperature data；
The fixed time temperature data are handled, so as to obtain on lower floor's asphalt concrete layer lay after not
Temperature data with position and at different moments.
Further, after the temperature of detection lower floor asphalt concrete layer is to obtain temperature data, in addition to：
During being rolled to lower floor's asphalt concrete layer, ground temperature, wind-force and precipitation are worked as in detection in real time
Amount, to obtain real-time weather data.
Wherein, after obtaining the real-time weather data, to the real-time weather data and lower floor's asphalt concrete layer
Temperature data carry out process of aggregation, to obtain the construction data for instructing the construction of high altitude localities asphaltic concrete core wall
Storehouse.
Wherein, according to temperature data, it is determined that the bituminous concrete to be laid that will be laid on lower floor's asphalt concrete layer
Outlet temperature and paving material include：
According to the temperature data, the temperature drop change of lower floor's asphalt concrete layer is obtained；
Changed according to the temperature drop, it is determined that by the bituminous concrete to be laid laid on lower floor's asphalt concrete layer
Outlet temperature and paving material.
Further, in addition to：Changed according to the temperature drop, it is determined that laid on lower floor's asphalt concrete layer
Temperature before the rolling of asphalt concrete layer, and the temperature of asphalt concrete layer is adjusted, so as to the temperature before more than described roll
It is preceding that it is rolled.
In summary, compared with prior art, high altitude localities asphaltic concrete core wall rapid constructing method of the invention
Have the beneficial effect that following aspect：
1st, method of the invention, the characteristics of for high altitude localities, bituminous concrete and Transition Materials are disposably spread simultaneously
Build, making efficiency high, rolled simultaneously using three rollers after making, raising rolls efficiency, reduces the pitch coagulation after paving
Soil heat scatter and disappear speed, when pave in the above last layer bituminous concrete when, be not required to the bituminous concrete table that will have been paved
Heat in face, you can face directly paves bituminous concrete directly over, and so as to reduce working procedure, efficiency of construction is greatly improved；
2nd, method of the invention, after bituminous concrete and Transition Materials making, uses three heavy rollers with isosceles triangle
The mode of layout rolls to the bituminous concrete after making and Transition Materials, and shortening rolls the time, and reduction rolls rear pitch and mixed
The porosity of soil is coagulated, the lost speed of heat of the bituminous concrete after paving is reduced, makes Transition Materials and bituminous concrete composition surface
Place combines more preferable；
3rd, method of the invention, during bituminous concrete laying is carried out, both makes the lower floor's pitch coagulation laid
The skin temperature of soil layer is less than 70 DEG C, and bituminous concrete to be laid can also be laid immediately on lower floor's asphalt concrete layer
Face, without being preheated to lower floor's asphalt concrete layer, efficiency of construction is greatly improved, reduces construction cost, shorten construction week
Phase.
4th, method of the invention, when the skin temperature for the lower floor's asphalt concrete layer laid is less than 70 DEG C, by
The temperature data of lower floor's asphalt concrete layer of laying, determine outlet temperature, the paving material of bituminous concrete to be laid
Deng and being adjusted according to the temperature value of determination to the mix of bituminous concrete, the process such as pave, so as to by drip to be laid
Blue or green concrete is laid immediately on above lower floor's asphalt concrete layer, and the bituminous concrete by currently laying melts away lower floor's pitch
The top layer of concrete layer, layers of asphalt concrete layer is directly docked, between layers of asphalt concrete layer without combine layering face, really
It is conformal into each parameter and intensity of asphalt concrete core dam accord with or surpass code requirement.
5th, method of the invention, during asphalt concrete, the top layer of the bituminous concrete laid and
The temperature drop of deep layer gets up with external climate conditioned connection, and the laying of upper strata bituminous concrete is instructed according to temperature data, so as to
Avoid to toast lower floor's asphalt concrete layer when skin temperature is less than 70 DEG C in specification with pre-warmed problem, improve
Efficiency of construction.
6th, method of the invention, during asphalt concrete core dam is constructed, the bituminous concrete laid is existed
The outlet temperature of temperature data under different condition and bituminous concrete to be laid, paving material, roll front and rear temperature etc. and melt
It is combined, forms the construction data-base of asphaltic concrete core wall construction, so as to carries out pitch in high altitude localities for future
The construction of concrete core-wall provides strong guidance and supported, the effect actively promoted is played to similar item.
Hereinafter, the embodiment of the present invention is described with reference to each accompanying drawing.
Brief description of the drawings
Fig. 1 is the flow chart of asphaltic concrete core wall rapid constructing method in high altitude localities of the present invention；
Fig. 2 is the bottom partial schematic diagram of the asphalt concrete core dam of the present invention；
Fig. 3 is the temperature field-effect figure of the asphaltic concrete core wall of the present invention.
Embodiment
As shown in figure 1, the flow chart of the high altitude localities asphaltic concrete core wall rapid constructing method for the present invention, by scheming
Understand, method of the invention includes：
Prepare the bituminous concrete using the local sand gravel of high altitude localities as aggregate；
Prepare the Transition Materials using local sand gravel as raw material；
By the disposable making simultaneously of the bituminous concrete prepared and Transition Materials on the pedestal of bituminous concrete, so as to
Asphalt concrete layer and a pair of transition bed of materials positioned at asphalt concrete layer both sides are formed on pedestal；
To be rolled beyond the existing roller for grinding weight standard to asphalt concrete layer and the transition bed of material, so that after grinding eventually
Bituminous concrete mean porosities be less than 2%；
Repeat the above steps, successively use disposable while spread on the asphalt concrete layer and the transition bed of material laid
Build, the super method ground weight standard and rolled, form asphaltic concrete core wall of the adjacent interlayer without faying face and positioned at bituminous concrete
A pair of Transition Materials bands of core-wall both sides；
Wherein, high altitude localities of the invention refers to the area of more than 3000 meters of height above sea level.
Specifically, in the high altitude localities of more than 3000 meters of height above sea level, most area mountain Gao Gushen, topography and geomorphology be various,
Formation lithology is complicated, coating is deep, conditions of transportation is poor.Overall high altitude localities vegetation is rare, rarefaction of air, air pressure compared with
It is low, oxygen is less, temperature is low, day and night temperature is big (temperature difference is often more than 20 DEG C), often occur daily minimal tcmperature 0 DEG C to-
Between 20 DEG C, wind-force between 4-6 levels, intra day ward be more than 5mm situation, daytime, solar radiation was strong, and night is relatively cold,
Meteorological condition is extremely complex, and hydrogeological environment is severe, belongs to geological disaster and takes place frequently and earthquake-prone region.Therefore, in High aititude
Progress asphalt concrete core dam construction in area is extremely difficult, and for the smooth development that ensures to construct, the present invention enters with the following method
The rapid construction of row asphaltic concrete core wall, the construction method comprise the following steps.
S01, raw material preparation
Prepare the bituminous concrete and Transition Materials using the local sand gravel of high altitude localities as aggregate.
In the prior art, core of earth-rockfill dam bituminous concrete usually requires that alkaline bone material, such as limestone and dolomite.Because of drip
Green grass or young crops is in acidity, and so during bituminous concrete heat is mixed and stirred, the combination of pitch and alkaline bone material is not only surface physics combination,
And faying face can chemically react, the adhesive force of pitch and aggregate can be strengthened.But in the dam site of some high altitude localities
Area, due to the features such as it is geographical, weather, in rational economical transport distance range, it is impossible to basic rock material source is found, it is local
Only natural sand gravel material or acid rock, such as granite and quartzite.And it is the smooth development for ensuring construction work, it need to examine
Consider using situation of the local sand gravel as aggregate.
The present invention is based on above-mentioned reason, and using the sand gravel that local stock ground has as raw material, sand gravel is carried out
Break process obtains the aggregate of required bituminous concrete.Wherein, bituminous concrete of the invention includes coarse aggregate, thin bone
Material, filler and pitch.
After to local sand gravel material crushing and screening, 19~16,16~13.2,13.2~9.5,9.5~4.75 and are obtained
6 grades of 4.75~2.36mm, 2.36mm~0.075mm particle diameters mineral aggregates, wherein, coarse aggregate from particle diameter be 19~16,16~
13.2nd, the Pyatyi proportioning of 13.2~9.5,9.5~4.75 particles, fine aggregate are filled out from the particle that particle diameter is 4.75~2.36mm
Material uses limestone mineral powder, and pitch uses the A level pitches of Kelamayi 70.
By entering line density and the moisture content test and the adhesion experiment of pitch, tough test, heat resistance to coarse aggregate
Experiment and the experiment of crushing rate, identification show that for sand gravel material totally in alkalescence, its quality is hard, does not occur in heating process
Phenomena such as cracking, decomposition, crush sand gravel material and natural grit granulation is overall strong with pitch adhesive force, robustness is good, quality base
This meets SL501《Bituminous concrete facing of earth-rock dam and core-wall design specification》The technology of defined bituminous concrete coarse aggregate will
Ask, therefore, local sand gravel can be as the coarse aggregate of asphaltic concrete core wall.
By fine aggregate is carried out the stable grade of apparent density, water absorption rate, water, robustness,<0.075mm granule contents with
And silt test, show that fine aggregate indices are satisfied by code requirement, can be as the fine aggregate for coagulating native core-wall.
And the coarse aggregate of the present invention, fine aggregate, the mass percent scope of filler are：53:30:17-55:32:13, oilstone
Than for 6.7%-7.3%.Preferably, coarse aggregate, fine aggregate, the mass percent of filler are：54.6:31.4:14, bitumen aggregate ratio is
6.8%.
The Transition Materials using local sand gravel as raw material are prepared, the grain diameter of Transition Materials is not more than 8cm.
Wherein, during bituminous concrete is prepared, the temperature of mixing and stirring of bituminous concrete as defined in existing related specifications is shown in
Table 1 below.
The heating-up temperature (DEG C) of the bituminous concrete of table 1
| Project | Temperature |
| Asphalt heating temperature | 155~165 |
| Aggregate heating-up temperature | It is higher than asphalt heating temperature by 10~20 |
| Bituminous concrete drop temperature | 155~175 |
And the mix temperature of the bituminous concrete of the present invention needs to be adjusted in real time according to local making situation, in mixing
During bituminous concrete, first by aggregate and filler dry mixing 15s, add heated bitumen and mix and stir.The mixing time of bituminous concrete should not
Less than 45s.Bituminous concrete answers uniform color, does not isolate, without grey material.
S02, disposable by the bituminous concrete prepared and Transition Materials while making is on the pedestal of bituminous concrete, with
Just asphalt concrete layer and a pair of transition bed of materials positioned at asphalt concrete layer both sides are formed on pedestal.
Wherein, core wall dam of the present invention bottom partial schematic diagram as shown in Fig. 2 including：Concrete anti-seepage positioned at bottom
Wall 6, the concrete floor 5 of the top both sides of concrete cut 6 is arranged on, is arranged on the pitch coagulation of the top of concrete floor 5
Soil matrix seat 4, the up-narrow and down-wide asphaltic concrete core wall 1 above bituminous concrete pedestal 4 is spread out and put on, wherein, in pitch coagulation
The upper and lower surface of soil matrix seat 4 paves respectively chiltern bitumastic 3.
Wherein, need to be to the use of bituminous concrete pedestal 4 after structure as shown in Figure 2 has spread out and put on bituminous concrete pedestal 4
Handled in the joint face being connected with asphaltic concrete core wall 1, it is specific as follows：
1st, dust removal process is carried out to joint face, makes joint face clean, dry, no graywall.
2nd, spraying applies bottom material on joint face, it is desirable to and spraying is uniform, such as brushing asphalt paint, dosage about 0.15~
0.20kg/m2.Asphalt paint can be heated bitumen or cut-back asphalt or cationic emulsified bitumen；Or spray cut-back asphalt, dilution
Pitch can dissolve with gasoline or kerosene or diesel oil with pitch, stir evenly and form.
3rd, after dry tack free to be sprayed, pave chiltern bitumastic 3 thick 2cm in sprayed surface.
After being disposed to the joint face of bituminous concrete pedestal 4, the amount of progress payoff operation and stationary positioned metal
Silk, making is then carried out using the paver with three hoppers.
The paver that the present invention uses has the mixed-hopper positioned at the middle bituminous concrete that is used to pave, in compound
The both sides of bucket set a pair of transition hoppers for being used for making Transition Materials respectively, and after bituminous concrete prepares, pitch is mixed
After solidifying soil, Transition Materials load and unload in corresponding hopper respectively, paver walking is disposably same by bituminous concrete and Transition Materials
When making above the pedestal of bituminous concrete, so as to form asphalt concrete layer and positioned at asphalt concrete layer above pedestal
A pair of transition bed of materials of both sides, this layer of asphalt concrete layer and a pair of transition bed of materials are respectively the most bottom of asphalt concrete core dam
Layer.
Wherein, in asphalt concrete layer and a pair of transition bed of materials, the thickness laid every time is more than the present invention
37cm, less than or equal to 40cm (so that the thickness after rolling is more than 30cm, less than or equal to 34cm).
S03, lower floor's asphalt concrete layer of the bottom and the lower transition bed of material laying shakeout after, with beyond it is existing stone roller mark again
Accurate roller rolls to asphalt concrete layer and the transition bed of material, so that the mean porosities of the bituminous concrete after grinding eventually
Less than 2%.
Wherein, isosceles triangle roll be by make to roll the roller of lower floor's asphalt concrete layer it is preceding, for rolling a pair
A pair of rollers of the lower transition bed of material are in rear, three rollers while the method realization rolled of walking forward.
It can only be used after regulation bituminous concrete paves in existing specification and grind weight for less than 1.5 tons of light-duty roller progress
Roll, but because the bitumen aggregate ratio of the bituminous concrete of the invention used is 6.8%, and continuously matched somebody with somebody using Pyatyi, therefore, in pitch
After concrete speading, the roller more than more than 2 tons can be used to be rolled for the present invention, and be not in sunken in roller compaction process
Grind, viscous stone roller phenomenon (to increase heat insulation effect, felt-cloth can also be laid on bituminous concrete before rolling), stone roller is greatly improved
Speed is pressed, reduces the lost speed of heat after bituminous concrete laying.
Preferably, the present invention can be entered using three 2.2 tons of roller to lower floor's asphalt concrete layer and the lower transition bed of material
Isosceles triangle synchronously rolls row simultaneously, can also use it is middle for 2.2 tons, both sides are 2.6 tons (or more than 2.6 tons) three grind
Press carries out isosceles triangle and synchronously rolled.
In roller compaction process, bituminous concrete just grinds temperature control at 130 DEG C~160 DEG C, grinds temperature eventually and is not less than 110
DEG C, if paving material is too high, be able to can be rolled after static certain time after paving.The vibrating roller speed of travel is controlled in 20m/
Min~30m/min.With bank slope binding site and vibrating roller roll less than corner or slope position, using Minitype manual ram ram
It is real.Compacting standard is untill bituminous concrete surface " returning oil ", while prevents from causing aggregate to crush because compacting method is improper.
During rolled asphalt concrete, rolling compaction machine must not brake suddenly, or be rolled across core-wall.Using the dislocation side of rolling
Formula, every time dislocation half grind wide, and order from left to right or from right to left rolls successively.
The making of asphaltic concrete core wall, bituminous concrete and Transition Materials are since lowest part to upper strata successively making.With
This simultaneously, it is completely balanced that transition dam shell material fills also construction balanced with bituminous concrete and Transition Materials concora crush, overall core-wall
Rise, make completely to keep same elevation as far as possible, reduce transverse joint as far as possible.When having transverse joint, it engages the gradient and typically makes 1：3
Slope, more than levels shift of butts 2m.Vibroroller cmpacting is real-time, overlapping at transverse joint to roll 30~50cm.In core-wall both sides
In the range of 2m, more than 10t (10 tons) big machinery operation must not be used, avoids core-wall local and is distorted or destroyed by shake, if
Have to use, how long can just be rolled after core-wall making need to be determined, roller exciting force size etc., locally shaken to prevent core-wall
Distortion destroys, and various machineries must not directly cross over core-wall.Bur on vibrating roller should be cleared up in time.
The present invention is using three rollers in by the way of isosceles triangle distribution while to the asphalt concrete layer and mistake that lay
Cross the bed of material to be rolled, avoid asphalt concrete layer in the prior art and the transition bed of material is non-concurrent when rolling, occur rolling transition
The situation for making asphalt concrete layer be subjected to displacement or distort during the bed of material so that asphalt concrete layer and the transition bed of material after rolling
Junction handing-over is good, and the transition bed of material can provide a supporting role for asphalt concrete layer, reduces bituminous concrete in rolling
Loss.When the present invention rolls to the asphalt concrete layer laid and a pair of transition bed of materials progress isosceles triangles, it can use and shake
The method of stone roller first rolls 6-8 times, then it is quiet grind 2 times；It can also be ground 2 times using first quiet, then shake and grind 6-8 times, then the quiet side for grinding 2 times
Method, the method rolled determines with number according to the paving material of the bituminous concrete to pave every time, but no matter is rolled using which kind of
Method, the mean porosities of the bituminous concrete after grinding eventually are smaller than 2%.
Wherein, after having rolled every time, lower floor's asphalt concrete layer is also detected using temperature controlled method, timing
Temperature, and the paving process for the bituminous concrete for instructing to pave above according to the temperature.
S04, after lower floor's asphalt concrete layer and the lower transition bed of material are laid and have been rolled, repeat above-mentioned S02, S03 step
Suddenly, successively use disposable making simultaneously upwards on the asphalt concrete layer and the transition bed of material laid, surpass and grind heavy standard
The method rolled, form asphaltic concrete core wall of the adjacent interlayer without faying face and a pair positioned at asphaltic concrete core wall both sides
Transition Materials band.
Wherein, during successively layer bituminous concrete and Transition Materials are laid upwards, the present invention uses following temperature
Control method, instruct the paving process of bituminous concrete.
Step 1, after lower floor's asphalt concrete layer has been laid, the temperature of detection lower floor asphalt concrete layer is to obtain temperature
Degrees of data
After lower floor's asphalt concrete layer has been laid, is rolled every time, regularly to the top layer of lower floor's asphalt concrete layer
Temperature detection is carried out with each wall below top layer, is being spread to obtain the top layer of lower floor's asphalt concrete layer and each wall
Fixed time temperature data after if.
Wherein, carrying out temperature detection to each wall below the top layer and top layer of lower floor's asphalt concrete layer includes：
Lower floor's asphalt concrete layer is divided into multiple walls along the depth direction of lower floor's asphalt concrete layer；
Multiple rows of test point is radially arranged along each wall, measuring point of often listing and indexing is included along the wall axial arranging
Multiple test points；
After being rolled every time to lower floor's asphalt concrete layer, temperature detection is carried out respectively to multiple test points.
After carrying out temperature detection to multiple rows of test point of each wall, obtain lower floor's asphalt concrete layer top layer and
Fixed time temperature data of each wall after laying below top layer.
Wherein, the spacing between each wall of the invention can be 4-6cm, it is preferred that the spacing between each wall
For 5cm, i.e. set a wall every 5cm, and multiple test points are set on the wall.
After obtaining the top layer of lower floor's asphalt concrete layer and the fixed time temperature data of each wall, to top layer and each wall
Multiple rows of test point temperature data first summed respectively, again be averaged value processing, mixed to obtain on lower floor's pitch
The temperature data of top layer and each wall in diverse location and at different moments after solidifying soil layer laying.
After detecting the temperature of lower floor's asphalt concrete layer and obtaining temperature data, also to lower floor's asphalt concrete layer
During being rolled, ground temperature, wind-force and precipitation are worked as in detection in real time, to obtain real-time weather data, and will obtain
The temperature data of real-time weather data and lower floor's asphalt concrete layer carry out process of aggregation, be used to instruct High aititude to obtain
The construction data-base of regional asphaltic concrete core wall construction.
Step 2, after the temperature data of lower floor asphalt concrete layer is obtained, according to temperature data, if as shown by data lower floor
The skin temperature of asphalt concrete layer is less than 70 DEG C, it is determined that the pitch to be laid that will be laid on lower floor's asphalt concrete layer
The outlet temperature and paving material of concrete.
After the temperature data of lower floor's asphalt concrete layer is obtained, if the top layer temperature of as shown by data lower floor asphalt concrete layer
Degree is more than or equal to 70 DEG C, then directly spreads bituminous concrete to be laid according to temperature during laying lower floor's asphalt concrete layer
It is located on lower floor's asphalt concrete layer.
It should be noted that because the height above sea level of high altitude localities, temperature are low, therefore, in the next layer of pitch coagulation that pave
After soil layer, the temperature drop of asphalt concrete layer quickly, after usual decking and rolling is complete, the table of the lower floor's asphalt concrete layer to have paved
Layer temperature can all be less than 70 DEG C quickly, in the case, if being provided according to specification, it is necessary to which lower floor's asphalt concrete layer is dried
It is roasting to heat, but because the limitation of the conditions such as geography, weather, so meeting can not be completed to construct, therefore, present inventor
The following method of the present invention is proposed in the work that studies for a long period of time, i.e., is less than 70 DEG C in the skin temperature of lower floor's asphalt concrete layer
When, continue the bituminous concrete that paves using following methods：
First, according to after the temperature data of the top layer of lower floor's asphalt concrete layer of acquisition and each wall, lower floor is obtained
The top layer of asphalt concrete layer, the temperature drop change of wall；
Then, changed according to temperature drop, it is determined that the bituminous concrete to be laid that will be laid on lower floor's asphalt concrete layer
Outlet temperature and paving material.
Wherein, intermediate layer of the invention is the wall between the 8-12cm of span top layer, it is preferred that when adjacent spacer
When spacing is 5cm, intermediate layer is used away from the wall at the 10cm of top layer.
Preferably, changed according to temperature drop, it is determined that the pitch coagulation to be laid that will be laid on lower floor's asphalt concrete layer
The outlet temperature and paving material of soil comprise the following steps：
If the skin temperature of lower floor's asphalt concrete layer is between 40 DEG C -70 DEG C, the temperature drop in top layer and intermediate layer is less than or
Equal to 30 DEG C, i.e. when skin temperature is more than or equal to 40 DEG C, and intermediate layer temperature is more than or equal to 70 DEG C (away from top layer 10cm
When temperature drop between the wall at place and top layer is less than or equal to 30 DEG C), it is determined that go out on lower floor's asphalt concrete layer
The outlet temperature of the bituminous concrete to be laid of laying is 150 DEG C -170 DEG C, and paving material is 140 DEG C -150 DEG C；
If the skin temperature of lower floor's asphalt concrete layer be less than 40 DEG C, the temperature drop in top layer and intermediate layer be less than or equal to 30
DEG C, i.e. when skin temperature is less than 40 DEG C, intermediate layer temperature is less than 70 DEG C, but top layer and intermediate layer are (i.e. away between at the 10cm of top layer
Interlayer) temperature drop be less than or equal to 30 DEG C when, it is determined that go out the pitch to be laid that will be laid on lower floor's asphalt concrete layer
The outlet temperature of concrete is 160 DEG C -185 DEG C, and paving material is 150 DEG C -165 DEG C；
If the skin temperature of lower floor's asphalt concrete layer be less than 40 DEG C, and its top layer with away from the interval at the 5cm-6cm of top layer
Temperature drop between layer (preferable, the present invention is using away from first wall at the 5cm of top layer) is more than 30 DEG C, then lower floor is dripped
Blue or green concrete layer carries out pre-add heat treatment, to improve the surface temperature of lower floor's asphalt concrete layer, then in lower floor's pitch coagulation
Asphalt concrete above soil layer.
Further, according to temperature drop change determine bituminous concrete to be laid outlet temperature and paving material it
Afterwards, it can also be changed according to temperature drop, accordingly determine the stone roller of asphalt concrete layer laid on lower floor's asphalt concrete layer
Before pressure temperature (i.e. just grind temperature, not less than 130 DEG C), so as to asphalt concrete layer temperature be more than roll before temperature when, it is right
It is rolled.
Step 3, when using above-mentioned steps determine the outlet temperature of bituminous concrete to be laid after, to be laid
The mix temperature of bituminous concrete is adjusted, so that the temperature of the bituminous concrete exported at the machine outlet of mixing building reaches
Outlet temperature.
, will be from after step 4, the temperature of the bituminous concrete exported at the machine outlet from mixing building reach outlet temperature
The bituminous concrete to be laid exported in mixing building is transported at lower floor's asphalt concrete layer, and by bituminous concrete to be laid with
The paving material determined in above-mentioned steps is laid immediately on above lower floor's asphalt concrete layer, will pass through the drip currently laid
Blue or green concrete covers and heats lower floor's asphalt concrete layer, the top layer of lower floor's asphalt concrete layer melts away, so as to be formed with
Upper asphalt concrete layer of the junction without layering face of layer asphalt concrete layer docking is (during asphalt concrete, while once
Property laying Transition Materials).
Without combination between the adjacent two layers be made up of multilayer asphalt concrete layer, every ultimately formed using the inventive method
The asphaltic concrete core wall in layering face, its temperature change in field-effect from the bottom to top, and temperature field effect change can be with reference to shown in Fig. 3
Explanation.
Shown in Fig. 3, n-th layer bituminous concrete for asphalt concrete core dam and Transition Materials, spread out on N layers
The bituminous concrete of N+1 layers and the Longitudinal cross section schematic of Transition Materials of paving, wherein, A1-AM is respectively that N+1 layer pitches mix
The top layer of solidifying soil layer and each point on axis of each wall, B1-BM, C1-CM are respectively the pitch coagulation of N+1 layers
Soil layer and each point of the junction of the transition bed of material of its both sides, AN, BN, CN are respectively the axis of the asphalt concrete layer of n-th layer
On point and the point that joins on the transition bed of material of asphalt concrete layer both sides with it.
When carrying out the construction of bituminous concrete using the method for the present invention, it can be seen that adjacent two layers pitch coagulation after construction
The temperature and non-uniform change for the part core-wall that soil is formed after paving, but show field-effect：Mixed in the pitch of N+1 layers
The temperature drop highest of the A2 points on the axis in the intermediate layer of soil is coagulated, centered on A2 points, the temperature drop of vertical direction is higher than along level side
To the temperature drop (more than N+1 layers top layer being air, n-th layer is colder basal plane) of (i.e. width), but every layer of finite thickness, it is thick
Degree is about 30-34cm, and width is up to more than 0.6-2m.It is possible thereby to know, during the bituminous concrete that paves, spread out
The top layer temperature drop of the bituminous concrete of paving will be faster than deep layer temperature drop, it is possible to using the method for the present invention, be paved down when
, can paving material be higher immediately above in the lower floor's asphalt concrete layer to have paved when the skin temperature of bituminous concrete is relatively low
Bituminous concrete, i.e., directly the top layer of lower floor's asphalt concrete layer is melted away and interfaced by the high bituminous concrete of temperature
, without layering at the faying face of layers of asphalt concrete layer that makes successively to pave, and the asphaltic concrete core wall formed is each
Item parameter can reach code requirement.
Wherein, using the method for the present invention, the thickness of the bituminous concrete to pave every time can be more than 37cm, be less than or equal to
40cm (thickness after rolling is more than 30cm, less than or equal to 34cm), paving thickness exceeds specification, with reference to quickly rolling so that
The temperature drop of the bituminous concrete to have paved slows down, better heat preservation, and spreading speed is greatly improved, and is mixed in the pitch to having paved
In the case of solidifying native surface temperature is grasped reasonably, it can be achieved disposably to pave, i.e., without the bituminous concrete surface to having paved
Carry out pre-add hot drying and processing, you can face paves last layer bituminous concrete directly over.
In summary, compared with prior art, high altitude localities asphaltic concrete core wall rapid constructing method of the invention
Have the beneficial effect that following aspect：
1st, method of the invention, the characteristics of for high altitude localities, bituminous concrete and Transition Materials are disposably spread simultaneously
Build, making efficiency high, synchronously rolled using three rollers after making, raising rolls efficiency, reduces the pitch coagulation after paving
Soil heat scatter and disappear speed, when pave in the above last layer bituminous concrete when, be not required to the bituminous concrete table that will have been paved
Heat in face, you can face directly paves bituminous concrete directly over, and so as to reduce working procedure, efficiency of construction is greatly improved；
2nd, method of the invention, after bituminous concrete and Transition Materials making, uses three heavy rollers with isosceles triangle
The mode of layout is synchronized to the bituminous concrete after making and Transition Materials and rolled, and shortening rolls the time, and reduction drips after rolling
The porosity of blue or green concrete, the lost speed of heat of the bituminous concrete after paving is reduced, Transition Materials is connect with bituminous concrete
Conjunction face place combines more preferable；
3rd, method of the invention, during bituminous concrete laying is carried out, both makes the lower floor's pitch coagulation laid
The skin temperature of soil layer is less than 70 DEG C, and bituminous concrete to be laid can also be laid immediately on lower floor's asphalt concrete layer
Face, without being preheated to lower floor's asphalt concrete layer, efficiency of construction is greatly improved, reduces construction cost, shorten construction week
Phase.
4th, method of the invention, when the skin temperature for the lower floor's asphalt concrete layer laid is less than 70 DEG C, by
The temperature data of lower floor's asphalt concrete layer of laying, determine outlet temperature, the paving material of bituminous concrete to be laid
Deng and being adjusted according to the temperature value of determination to the mix of bituminous concrete, the process such as pave, so as to by drip to be laid
Blue or green concrete is laid immediately on above lower floor's asphalt concrete layer, and the bituminous concrete by currently laying melts away lower floor's pitch
The top layer of concrete layer, layers of asphalt concrete layer is directly docked, between layers of asphalt concrete layer without combine layering face, really
It is conformal into each parameter and intensity of asphalt concrete core dam accord with or surpass code requirement.
5th, method of the invention, during asphalt concrete, the top layer of the bituminous concrete laid and
The temperature drop of deep layer gets up with external climate conditioned connection, and the laying of upper strata bituminous concrete is instructed according to temperature data, so as to
Avoid to toast lower floor's asphalt concrete layer when skin temperature is less than 70 DEG C in specification with pre-warmed problem, improve
Efficiency of construction.
6th, method of the invention, during asphalt concrete core dam is constructed, the bituminous concrete laid is existed
The outlet temperature of temperature data under different condition and bituminous concrete to be laid, paving material, roll front and rear temperature etc. and melt
It is combined, forms the construction data-base of asphaltic concrete core wall construction, so as to carries out pitch in high altitude localities for future
The construction of concrete core-wall provides strong guidance and supported, the effect actively promoted is played to similar item.
Although above-mentioned elaborate to the present invention, the invention is not restricted to this, and those skilled in the art can
To be modified according to the principle of the present invention, therefore, the various modifications that all principles according to the present invention are carried out all should be understood to
Fall into protection scope of the present invention.
Claims (10)
- A kind of 1. high altitude localities asphaltic concrete core wall rapid constructing method, it is characterised in that including：Prepare the bituminous concrete using the local sand gravel of high altitude localities as aggregate；Prepare the Transition Materials using local sand gravel as raw material；By the bituminous concrete prepared and Transition Materials, disposably making is on the pedestal of bituminous concrete simultaneously, so as in pedestal Upper formation asphalt concrete layer and a pair of transition bed of materials positioned at asphalt concrete layer both sides；To be rolled beyond the existing roller for grinding weight standard to asphalt concrete layer and the transition bed of material, so that the drip after grinding eventually The mean porosities of blue or green concrete are less than 2%；Repeat the above steps, successively use described disposable while spread on the asphalt concrete layer and the transition bed of material laid Build, the super method ground weight standard and rolled, form asphaltic concrete core wall of the adjacent interlayer without faying face and positioned at bituminous concrete A pair of Transition Materials bands of core-wall both sides；Wherein, the high altitude localities refers to the area of more than 3000 meters of height above sea level.
- 2. according to the method for claim 1, it is characterised in that the bituminous concrete includes：Coarse aggregate, fine aggregate, fill out Material and pitch, wherein, coarse aggregate, fine aggregate, the mass percent of filler are：53:30:17-55:32:13, bitumen aggregate ratio is 6.7%-7.3%.
- 3. according to the method for claim 2, it is characterised in that the stone roller beyond the existing roller for grinding weight standard is great In 2 tons, and more rollers roll in isosceles triangle.
- 4. according to the method for claim 3, it is characterised in that it is by for rolling the pitch that the isosceles triangle, which rolls, The roller of concrete layer it is preceding, for rolling a pair of rollers of a pair of transition bed of materials rear, while the method that walking rolls.
- 5. according to the method described in claim any one of 1-4, it is characterised in that in the process of successively asphalt concrete layer In, by the temperature of timing detection lower floor asphalt concrete layer, instruct the paving process of bituminous concrete to pave in the above.
- 6. according to the method for claim 5, it is characterised in that the temperature of lower floor's asphalt concrete layer is detected by timing, The paving process for the bituminous concrete for instructing to pave in the above includes：After lower floor's asphalt concrete layer has been laid, the temperature of detection lower floor asphalt concrete layer is to obtain temperature data；According to temperature data, if the skin temperature of lower floor's asphalt concrete layer is less than 70 DEG C, it is determined that will be in lower floor's pitch coagulation The outlet temperature and paving material for the bituminous concrete to be laid that soil layer is laid above；After the outlet temperature for determining bituminous concrete to be laid, the mix temperature of bituminous concrete to be laid is adjusted Section, so that the temperature of the bituminous concrete exported at the machine outlet of mixing building reaches the outlet temperature；The bituminous concrete to be laid for being up to the outlet temperature is transported at lower floor's asphalt concrete layer, and will be to be laid Bituminous concrete is laid immediately on above lower floor's asphalt concrete layer with the paving material, will pass through the pitch currently laid Concrete heating lower floor asphalt concrete layer, form being mixed without the upper pitch with reference to layering face of being docked with lower floor asphalt concrete layer Solidifying soil layer.
- 7. according to the method for claim 6, it is characterised in that after lower floor's asphalt concrete layer has been laid, under detection The temperature of layer asphalt concrete layer is included with obtaining temperature data：After lower floor's asphalt concrete layer has been laid, regularly to the top layer and top layer of lower floor's asphalt concrete layer below Each wall carries out temperature detection, determines to obtain the top layer of lower floor's asphalt concrete layer and each wall after laying When temperature data；The fixed time temperature data are handled, to obtain the different positions after being laid on lower floor's asphalt concrete layer Put and temperature data at different moments.
- 8. according to the method for claim 7, it is characterised in that the temperature of detection lower floor asphalt concrete layer is to obtain temperature After data, in addition to：During being rolled to lower floor's asphalt concrete layer, ground temperature, wind-force and precipitation are worked as in detection in real time, with Just real-time weather data are obtained.
- 9. according to the method for claim 8, it is characterised in that after obtaining the real-time weather data, to the real-time day Destiny carries out process of aggregation according to the temperature data of lower floor's asphalt concrete layer, is used to instruct high altitude localities to obtain The construction data-base of asphaltic concrete core wall construction.
- 10. according to the method for claim 9, it is characterised in that according to temperature data, it is determined that will be in lower floor's bituminous concrete The outlet temperature and paving material for the bituminous concrete to be laid that layer is laid above include：According to the temperature data, the temperature drop change of lower floor's asphalt concrete layer is obtained；Changed according to the temperature drop, it is determined that the bituminous concrete to be laid laid on lower floor's asphalt concrete layer is gone out into machine Mouth temperature and paving material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710587149.8A CN107435319B (en) | 2017-07-18 | 2017-07-18 | High altitude localities asphaltic concrete core wall rapid constructing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710587149.8A CN107435319B (en) | 2017-07-18 | 2017-07-18 | High altitude localities asphaltic concrete core wall rapid constructing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107435319A true CN107435319A (en) | 2017-12-05 |
| CN107435319B CN107435319B (en) | 2019-08-23 |
Family
ID=60460061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710587149.8A Active CN107435319B (en) | 2017-07-18 | 2017-07-18 | High altitude localities asphaltic concrete core wall rapid constructing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107435319B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112854142A (en) * | 2021-01-15 | 2021-05-28 | 西安理工大学 | Rolling type asphalt concrete core wall construction method under complex climate condition |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102864758A (en) * | 2012-10-22 | 2013-01-09 | 安蓉建设总公司 | Construction method of rolling compaction type asphalt concrete impervious core wall in high altitude and cold areas |
| US8636445B1 (en) * | 2012-05-28 | 2014-01-28 | Floyd E. Williams | Hazardous spill ground containment system |
-
2017
- 2017-07-18 CN CN201710587149.8A patent/CN107435319B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8636445B1 (en) * | 2012-05-28 | 2014-01-28 | Floyd E. Williams | Hazardous spill ground containment system |
| CN102864758A (en) * | 2012-10-22 | 2013-01-09 | 安蓉建设总公司 | Construction method of rolling compaction type asphalt concrete impervious core wall in high altitude and cold areas |
Non-Patent Citations (4)
| Title |
|---|
| 何鹏飞: "高寒地区土石坝沥青混凝土心墙冬季施工技术", 《水力发电》 * |
| 戈文武等: "高寒地区碾压沥青混凝土心墙快速施工技术", 《技术与市场》 * |
| 朱志坚等: "气候恶劣地区碾压沥青混凝土心墙快速施工方法", 《水利水电施工》 * |
| 郑文颖: "北方高寒地区碾压式沥青混凝土防渗心墙快速施工技术", 《科技视界》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112854142A (en) * | 2021-01-15 | 2021-05-28 | 西安理工大学 | Rolling type asphalt concrete core wall construction method under complex climate condition |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107435319B (en) | 2019-08-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102864758B (en) | Construction method of rolling compaction type asphalt concrete impervious core wall in high altitude and cold areas | |
| CN104762862B (en) | SMA asphaltic road-mix surface course construction methods | |
| CN104762863B (en) | Bituminous mixture used for thin layer overlay of cement concrete pavement and preparation and construction methods of bituminous mixture | |
| CN104294732B (en) | A kind of high-elastic viscous stress absorbed layer | |
| CN107237301B (en) | The construction method of high altitude localities sand-gravel dam continuous laying | |
| CN110258236A (en) | A kind of high-performance steel slag road surface and its construction method | |
| CN108221560A (en) | The construction technology on rubber powder modified asphalt road surface | |
| CN104831598A (en) | Construction method for reconstruction of old cement pavement into asphalt concrete pavement | |
| CN107419706B (en) | The mesoclimate of high altitude localities asphaltic concrete core wall construction builds method | |
| CN107905052A (en) | A kind of heat in low temperature season mixes temperature and pressure asphalt concrete construction method | |
| CN102493316A (en) | Production method of plant-mixed cold recycling foamed asphalt concrete | |
| CN104631261A (en) | Construction method of continuous three layer pavement of bottom base layer, lower base layer and upper base layer of cement stabilized macadam | |
| CN108660890A (en) | Native construction method is stablized in a kind of road cement stabilization soil and environment-friendly water-based solidification | |
| CN110409251A (en) | A kind of dewatering and noise reduction pavement construction method | |
| CN101532273B (en) | Anti-rutting road surface RS2000 modified asphalt mixture proportion and construction technology | |
| CN108191310A (en) | A kind of solidified earth and the antifouling impervious processing method of big type coal field | |
| CN109736161A (en) | A kind of composite construction Sub-sealing Course for the road face between the cement road face on airport and semi-rigid type base | |
| CN104314053A (en) | Earth and rockfill concrete core wall asphalt concrete and paving method thereof | |
| CN106120507B (en) | A kind of over-wet soil roadbed rapid constructing method | |
| CN107435319B (en) | High altitude localities asphaltic concrete core wall rapid constructing method | |
| CN104631266B (en) | Normal-temperature asphalt pavement cold-mixed and cold-paved construction technology | |
| CN103422407A (en) | Construction process using cement diatomite to stabilize desert sand mixture to build Niger desert road | |
| CN107151961A (en) | A kind of construction method of town road | |
| CN102635047B (en) | Large-span bridge deck composite structure layer construction technology | |
| EP1176257B1 (en) | Process for making an asphalt and mixing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |