CN101407398A - Deep layer micro surfacing functional layer of asphalt pavement and construction method thereof - Google Patents
Deep layer micro surfacing functional layer of asphalt pavement and construction method thereof Download PDFInfo
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Abstract
The invention relates to an asphalt pavement deep microsurfacing functional layer, which is paved by the raw materials with the mixture ratio of 100 parts of aggregate, 9.3 parts of SBR cation modified emulsified asphalt, 2 parts of cement, 0.6 part of additive and 5 parts of water by weight. The construction method consists of the steps of milling and planing, spreading tack coat oil, mixing and paving, compacting, maintaining and quality inspection, and the asphalt pavement deep microsurfacing functional layer with the thickness of 25-30mm is paved. The asphalt pavement deep microsurfacing functional layer and the construction method thereof are tested by laboratory research test and field pavement test on asphalt roads, and test results show that the deep microsurfacing functional layer paved by the raw materials, the weight mixture ratio and the construction method of the invention completely complies with the standards issued by the ministry of communications on road performance requirements. The asphalt pavement deep microsurfacing functional layer of the invention has the advantages of reasonable design, good waterproof performance and good abrasion resistance, etc. The construction method has the advantages of quick forming, and the like, which can be adopted to pave both on newly-built asphalt pavement and old asphalt pavement.
Description
Technical field
The invention belongs to the coherent paving technical field on on-the-spot making road or drome, be specifically related to the differing materials paving of making at the scene.
Background technology
Existing road surface punishment (or cover) technology mainly comprises hot-mix asphalt mixture thin layer construction technical scheme and the little table place technical scheme that is used to improve or improve pavement quality.
Hot-mix asphalt mixture thin layer construction technical scheme is to attach to overlay 30mm with interior heated bitumen concrete on old asphalt pavement.Because the uneven distribution of traffic loading and the variation of pavement structure, different distortion will take place in bituminous pavement, and the place of repairing watch provides planeness plane preferably in being difficult to.Through the operation in a period, diseases such as polishing, aging, check crack appear in the road surface, and the bituminous pavement planeness is often also descending, and will therefore become a not overlay of uniform thickness according to the asphalt thin layer of equal thickness design.Local thickness increases and the design of material grating is not complementary, and the maximum ga(u)ge of new shop layer has surpassed 3 times of overlay compound maximum particle diameter, and this will cause the road surface non-deformability inconsistent, and roughness index is decayed fast under the heavy traffic condition.
Up to the present, the pave minimum construction thickness of moulding of hot-mix asphalt mixture book layer is 25～30mm.Because the effect of paver control planeness itself, the design thickness of hot-mix asphalt mixture book layer can only be based upon more than the projection on former road surface, and actual maximum ga(u)ge then is more than the lowest point of former road surface depression.The overlay of this became uneven; inner quality defectiveness not only; compactness is unbalanced; super thickness portion owes closely knit; water-repellancy and reduce for the provide protection of pavement structure, therefore non-deformability also reduces, and makes that mastery is protected the cycle in advance in the use; shorten the work-ing life of road, strengthened maintenance costs.
The main drawback of hot-mix asphalt mixture book layer is: first, construction quality is difficult to guarantee, hot-mix asphalt mixture paves needs good temperature condition, use polymer modification pitch higher to the requirement of temperature, thickness has only the table place layer of 30mm to be difficult to enough heats are remained to the termination that normally rolls, and therefore the continuity for quality control process and process procedure requires very high; Second, overlay repeatedly will make that the elastic multilayer system of design considerations is more complicated, hot-mix asphalt mixture book layer is a kind of functional layer of waterproof antiwear consumption, must have good deformation resistance concurrently again, wherein its corresponding thickness of the reasonableness of material mix proportion is closely related, article one, express highway pavement is the thick bituminous concrete top layer of 40mm, the 30mm same material layer if superpose on this basis, the thickness of upper layer just reaches 70mm, the reasonableness and the function of ground surface material design will change thereupon, cause deformation resistance to reduce; The 3rd, construction needs main equipment, hot-mix asphalt mixture book layer need use the bituminous concrete mix equipment of controlling complicated highly energy-consuming, and is also very high for the requirement of compacting equipment.
Micro-surfacing functional layer is the moulding that paves rapidly after adopting materials such as specialized apparatus will be gathered materials, water, filler, additive to mix and stir simultaneously, and in 1～2 hour the thin overlay structure of open to traffic fast.Micro-surfacing functional layer is had relatively high expectations to the protobitumen road surface, before carrying out the micro-surfacing functional layer construction, needs the planeness on protobitumen road surface is adjusted.The main drawback of micro-surfacing functional layer is: micro-surfacing functional layer has only a kind of maintenance measure of taking when functional diseases such as generation stable form crack, protobitumen road surface, pitted skin, rut, the structural strength on protobitumen road surface must meet the demands, there is not recurring structure type disease, old asphalt pavement is after operation in a few years, corresponding deformation will take place in different structural sheets on the general structure, in addition, at present mainly based on semi-rigid type base, the easier reflection crack that causes, the expansion phase of this reflection crack is generally very long.
Summary of the invention
A technical problem to be solved by this invention is to overcome the shortcoming of above-mentioned hot-mix asphalt mixture book layer and micro-surfacing functional layer, and a kind of reasonable in design, water resistance good, wear resisting property good, shaping speed is fast deep layer micro surfacing functional layer of asphalt pavement is provided.
Another technical problem to be solved by this invention is to provide the constructional method of the fast deep layer micro surfacing functional layer of asphalt pavement of a kind of shaping speed.
It is to be become by following weight parts proportion raw material making to solve the problems of the technologies described above the technical scheme that adopted:
Gather materials 100 parts
9～10 parts of the cation-modified emulsified bitumens of SBR
1～4 part of cement
0.2～1.0 part of auxiliary agent
4.0～6.5 parts in water.
Gathering materials in the said ratio is that particle diameter is the middle rubble bits material of 5～10mm and the compound of the microlith bits material that particle diameter is 0.075～3mm, and in its proportioning, middle rubble bits material is 1: 1～4 with the weight part ratio of microlith bits material; The water oil ratio of the cation-modified emulsified bitumen of SBR is 60%, is produced by Henan Province Wei Sende pavement material company limited; Cement is 325# ordinary Portland cement or 425# ordinary Portland cement; Auxiliary agent is that mass concentration that Henan Province Wei Sende pavement material company limited produces is that 80% GYM-06 positively charged ion splits the fast type emulsifying agent emulsion of coagulating slowly; Water in the proportioning comprises contained water in cation-modified emulsified bitumen of SBR and the auxiliary agent.
The optimum ratio of the raw materials used weight part of making deep layer micro surfacing functional layer of asphalt pavement of the present invention is:
Gather materials 100 parts
9～9.7 parts of the cation-modified emulsified bitumens of SBR
1～3 part of cement
0.4～0.8 part of auxiliary agent
4～6 parts in water.
The best proportioning of the raw materials used weight part of making deep layer micro surfacing functional layer of asphalt pavement of the present invention is:
Gather materials 100 parts
9.3 parts of the cation-modified emulsified bitumens of SBR
2 parts of cement
0.6 part of auxiliary agent
5 parts in water.
Its constructional method is as follows:
1, milling
Remove former road surface with milling planing machine and deeply feel diseases such as deformation in the scope, check crack, polishing, milling become one smooth and be parallel to the shallow slot on original design road surface.
2, spill the glutinous layer of cloth
Spill the cloth emulsified bitumen as glutinous layer at the milling bottom land.
3, mix and stir and pave
Weight part proportioning by deep layer micro surfacing functional layer of asphalt pavement of the present invention will be gathered materials, the cation-modified emulsified bitumen of SBR, cement, auxiliary agent, water, the place's of the deeply feeling paver of packing into mix and stir, and will do the mixture laying of becoming reconciled rapidly in the milling groove.
4, compacting
With the compound compacting that street roller will pave, compacted depth is 25～30mm.
5, health
Carry out health under the condition of controlled traffic and natural air drying, conditioned time is 3～4 hours.
6, quality test
" highway subgrade road surface on-the-spot test rules " JTJ059-95 by the Ministry of Communications's issue detects, and transfers after the assay was approved and uses.
Deep layer micro surfacing functional layer of asphalt pavement of the present invention and constructional method thereof are through the laboratory study test and carried out on-the-spot making test on bituminous pavement, test-results shows, the deep layer micro surfacing functional layer that adopts raw material of the present invention and weight proportion thereof and constructional method to pave meets the Ministry of Communications's ministerial standard pavement performance requirement fully.Advantage such as that deep layer micro surfacing functional layer of asphalt pavement of the present invention has is reasonable in design, water resistance good, wear resisting property is good, constructional method of the present invention have advantages such as shaping speed is fast, can carry out making on newly-built bituminous pavement and old asphalt pavement.
Embodiment
The present invention is described in more detail below in conjunction with embodiment, but the invention is not restricted to these embodiment.
Embodiment 1
Gathering materials with 100kg is that build up thickness on the bituminous pavement upper berth be that the deep layer micro surfacing functional layer of asphalt pavement of 25～30mm used raw material and weight proportion thereof are as follows to example:
Particle diameter is the middle rubble bits material 25kg of 5～10mm
Particle diameter is the microlith bits material 75kg of 0.075～3mm
The cation-modified emulsified bitumen 9.3kg of SBR
325# ordinary Portland cement 2kg
The GYM-06 positively charged ion splits the fast type emulsifying agent emulsion 0.6kg of coagulating slowly
Water 5kg.
The water oil ratio of the above-mentioned cation-modified emulsified bitumen of SBR is 60%, is produced by Henan Province Wei Sende pavement material company limited; The also available 425# ordinary Portland cement of 325# ordinary Portland cement is replaced, and consumption is identical with the 325# ordinary Portland cement; It is 80% that the GYM-06 positively charged ion splits fast mass concentration of coagulating type emulsifying agent emulsion slowly, is produced by Henan Province Wei Sende pavement material company limited; Water in the proportioning comprises that cation-modified emulsified bitumen of SBR and GYM-06 positively charged ion split the fast contained water in the type emulsifying agent emulsion that coagulates slowly.
Its constructional method is as follows:
1, milling
Remove former road surface with milling planing machine and deeply feel diseases such as deformation in the scope, check crack, polishing, milling become one smooth and be parallel to the shallow slot on original design road surface.
2, spill the glutinous layer of cloth
Spill the cloth emulsified bitumen as glutinous layer at the milling bottom land.
3, mix and stir and pave
Weight part proportioning by deep layer micro surfacing functional layer of asphalt pavement of the present invention will be gathered materials, the cation-modified emulsified bitumen of SBR, 325# ordinary Portland cement, GYM-06 positively charged ion split the fast type emulsifying agent emulsion, water, the place of the deeply feeling paver of packing into of coagulating slowly and mix and stir, and will do the mixture laying of becoming reconciled rapidly and arrive in the milling groove.
4, compacting
With the compound compacting that street roller will pave, compacted depth is 25～30mm.
5, health
Carry out health under the condition of controlled traffic and natural air drying, conditioned time is 3～4 hours.
6, quality test
" highway subgrade road surface on-the-spot test rules " JTJ059-95 by the Ministry of Communications's issue detects, and transfers after the assay was approved and uses.
Embodiment 2
Gathering materials with 100kg is that build up thickness on the bituminous pavement upper berth be that the deep layer micro surfacing functional layer of asphalt pavement of 25～30mm used raw material and weight proportion thereof are as follows to example:
Particle diameter is the middle rubble bits material 50kg of 5～10mm
Particle diameter is the microlith bits material 50kg of 0.075～3mm
The cation-modified emulsified bitumen 9kg of SBR
325# ordinary Portland cement 4kg
The GYM-06 positively charged ion splits the fast type emulsifying agent emulsion 0.2kg of coagulating slowly
Water 4kg.
The water oil ratio of the above-mentioned cation-modified emulsified bitumen of SBR is 60%, is produced by Henan Province Wei Sende pavement material company limited; The also available 425# ordinary Portland cement of 325# ordinary Portland cement is replaced, and consumption is identical with the 325# ordinary Portland cement; It is 80% that the GYM-06 positively charged ion splits fast mass concentration of coagulating type emulsifying agent emulsion slowly, is produced by Henan Province Wei Sende pavement material company limited; Water in the proportioning comprises that cation-modified emulsified bitumen of SBR and GYM-06 positively charged ion split the fast contained water in the type emulsifying agent emulsion that coagulates slowly.
Constructional method is identical with embodiment 1.
Embodiment 3
Gathering materials with 100kg is that build up thickness on the bituminous pavement upper berth be that the deep layer micro surfacing functional layer of asphalt pavement of 25～30mm used raw material and weight proportion thereof are as follows to example:
Particle diameter is the middle rubble bits material 20kg of 5～10mm
Particle diameter is the microlith bits material 80kg of 0.075～3mm
The cation-modified emulsified bitumen 10kg of SBR
325# ordinary Portland cement 1kg
The GYM-06 positively charged ion splits the fast type emulsifying agent emulsion 1.0kg of coagulating slowly
Water 6.5kg.
The water oil ratio of the above-mentioned cation-modified emulsified bitumen of SBR is 60%, is produced by Henan Province Wei Sende pavement material company limited; The also available 425# ordinary Portland cement of 325# ordinary Portland cement is replaced, and consumption is identical with the 325# ordinary Portland cement; It is 80% that the GYM-06 positively charged ion splits fast mass concentration of coagulating type emulsifying agent emulsion slowly, is produced by Henan Province Wei Sende pavement material company limited; Water in the proportioning comprises that cation-modified emulsified bitumen of SBR and GYM-06 positively charged ion split the fast contained water in the type emulsifying agent emulsion that coagulates slowly.
Constructional method is identical with embodiment 1.
In order to determine best proportioning of the present invention and constructional method thereof, the contriver has carried out a large amount of laboratory study tests, and various test situation are as follows:
Laboratory apparatus: digitally controlled multifunctional electric compaction device, model are DZY-II, are produced by Wuxi City south China test apparatus company limited; Wet wheel abrasion test instrument, model is WTAT-120, by produced in USA; Loading wheel field compaction test instrument, model are 6YFN567-355, are produced by the farsighted highway maintenance equipment in Henan Province company limited; Ionic charge determinator, model are GYCY050007, are produced by the farsighted highway maintenance equipment in Henan Province company limited; Pitch normal viscosity instrument, model are LN3, are produced by tianjin building instrument plant; The full-automatic bitumen needle forcemeter of computer, model are ZBZR-V, are produced by Shuyang County, Jiangsu Province highway detecting instrument instrument factory; Horizontal ductility machine, model are GYSY2000A, are produced by the farsighted highway maintenance equipment in Henan Province company limited; Full-automatic bituminous softening-point test instrument, model is SYD-2806E, is produced by Shuyang County, Jiangsu Province highway detecting instrument instrument factory.Automatically digital display Los Angeles wears away instrument, and model is: IM-II, produced by Shuyang County, Jiangsu Province highway detecting instrument instrument factory; The automatic wheel tracking test instrument of scientific research type multi-usage, model is QCZ-2, gold mental faculties in quescent slate arrow observation and control technology institute produces by Beijing.
1, proportioning raw materials is determined
The deep layer micro surfacing functional layer of asphalt pavement proportioning raw materials determines that experiment comprises that mainly starting material are selected, aggregate grading is determined, best asphalt content is determined, optimum moisture content is determined experiment.
(1) grating is determined
Middle rubble bits material and the particle diameter that according to the ministerial standard JTG E42-2005 of the Ministry of Communications " highway engineering gather materials testing regulation " T 0302-2005 and T 0327-2005 test method to particle diameter is 5～10mm is that the microlith bits material of 0.075～3mm carries out size analysis, when particle diameter be middle rubble bits material and the particle diameter of 5～10mm be the microlith bits material ratio of 0.075～3mm formate gradation composition is near the intermediate value of grading limit when being 1: 3, the percent of pass of the grating upper limit, lower limit, intermediate value and formate gradation composition sees Table 11.
Table 1 screening result that gathers materials
(2) amount of water determines
Get rubble bits material 2.5kg in the basalt that particle diameter is 5～10mm, particle diameter is the basalt microlith bits material 7.5kg of 0.075～3mm, common heavy 10kg gathers materials, the cation-modified emulsified bitumen of SBR (water oil ratio is 60%) 0.95kg, 325# ordinary Portland cement 0.2kg, mass concentration is that 80% GYM-06 positively charged ion splits the fast type emulsifying agent emulsion 0.006kg of coagulating slowly, add 4.0% of aggregate quality respectively, 4.5%, 5.0%, 5.5%, 6.0%, 6.5% water (comprises the cation-modified emulsified bitumen of SBR, water in the auxiliary agent), carry out compaction test according to 0804-94 test method among the JTJ57-94 " highway engineering stabilized with inorganic binder testing of materials rules ", determine water consumption in the proportioning by dry density.Experimental result sees 2.
Table 2 compaction test results
| Water consumption (%) | 4.0 | 4.5 | 5.0 | 5.5 | 6.0 | 6.5 |
| Dry density (g/cm 3) | 2.13 | 2.16 | 2.17 | 2.07 | 2.03 | 2.01 |
Can be seen that by table 2 when water consumption was 4.0%～6.5% (comprising the water in the cation-modified emulsified bitumen of SBR, the auxiliary agent) of aggregate quality, dry density was better, water consumption is 5.0% o'clock dry density maximum of aggregate quality.It is 4.0%～6.5% (comprising the water in the cation-modified emulsified bitumen of SBR, the auxiliary agent) of aggregate quality that the present invention adopts water consumption, and best water consumption is 5.0% (comprising the water in the cation-modified emulsified bitumen of SBR, the auxiliary agent) of aggregate quality.
(3) the cation-modified emulsified bitumen consumption of SBR determines
The water oil ratio of the cation-modified emulsified bitumen consumption of the SBR that this test is adopted is 60%.
1. wet wheel wear test
Selecting the cation-modified emulsified bitumen consumption of 8.7%, 9.0%, 9.3%, 9.7%, 10.0%, 10.3% 6 SBR of aggregate quality for use is experimental point.
Get rubble bits material 2.5kg in the basalt of 5～10mm, 0.075 the basalt microlith of～3mm bits 7.5kg, common heavy 10kg gathers materials, 325# ordinary Portland cement 0.2kg, mass concentration is that 80% GYM-06 positively charged ion splits the fast type emulsifying agent emulsion 0.06kg of coagulating slowly, and each test point cation-modified emulsified bitumen consumption of corresponding SBR is respectively 0.9kg, 0.933kg, 0.967kg, 1kg.And according to mixing and stirring the definite outer amount of water of test.
According to 18 of the T0752-1993 specimen molding method shaping test pieces among the ministerial standard JTJ052-2000 of the Ministry of Communications " highway engineering pitch and asphalt testing regulation ", sample dimensions is Φ 279mm * 6mm, the baking oven of test specimen being put into 60 ℃ ± 3 ℃ dries to constant weight, and adopting wet wheel abrasion test instrument to test according to the T0752-1993 test method among the ministerial standard JTJ052-2000 of the Ministry of Communications " highway engineering pitch and asphalt testing regulation ", test and calculation result see Table 3.
2. loading wheel adheres to sand test
Selecting the cation-modified emulsified bitumen of SBR for use is that 8.7%, 9.0%, 9.3%, 9.7%, 10.0%, 10.3% 6 consumption of aggregate quality is an experimental group.
It is 1. identical with experiment to make test specimen used raw material and weight proportion thereof.
According to 18 of the T0755-2000 specimen molding method shaping test pieces among the ministerial standard JTJ052-2000 of the Ministry of Communications " highway engineering pitch and asphalt testing regulation ", sample dimensions is 50mm * 380mm * 12mm, the baking oven of test specimen being put into 60 ℃ ± 3 ℃ dries to constant weight, and adopt loading wheel field compaction test instrument to test according to the T0755-2000 test method among the ministerial standard JTJ052-2000 of the Ministry of Communications " highway engineering pitch and asphalt testing regulation ", measure 1 hour wear(ing)value and scab value.Test and calculation result see Table 3.
Table 3 wear(ing)value and adhesion sand amount and bitumen aggregate ratio correspondence table
| The cation-modified emulsified bitumen of SBR (%) | 8.7 | 9.0 | 9.3 | 9.7 | 10.0 | 10.3 |
| 1h wear(ing)value (g/m 2) | 541 | 332 | 264 | 210 | 133 | 102 |
| Scab value (g/m 2) | 237 | 267 | 332 | 359 | 370 | 461 |
By table 3 as seen, the consumption of the cation-modified emulsified bitumen of SBR is 8.7% o'clock of aggregate quality, wear(ing)value is excessive, the consumption of the cation-modified emulsified bitumen of SBR is 10.3% o'clock of aggregate quality, the scab value is excessive, the consumption of the cation-modified emulsified bitumen of SBR is 9.0% of aggregate quality～10.0% o'clock, and wear(ing)value and scab value all meet the requirements.It is 9%～10% of aggregate quality that the present invention selects the cation-modified emulsified bitumen consumption of SBR.
3. Superpave mix-design experiment
Selecting the cation-modified emulsified bitumen of SBR for use is that 8.7%, 9.0%, 9.3%, 9.7%, 10.0%, 10.3% 6 consumption of aggregate quality is an experimental group.
It is 1. identical with experiment making used raw material of test specimen and weight proportion thereof.
With the mixture laying that mixes and stirs in enamel tray, the about 2cm of thickness, compound is placed on health 3 hours (jelling time) in 60 ℃ of climatic chambers, according to 18 test specimens of T0702-2000 test method moulding among the ministerial standard JTJ052-2000 of the Ministry of Communications " highway engineering pitch and asphalt testing regulation ", sample dimensions is Φ 101.6mm * 63.5mm.Test specimen is placed the health demoulding in 48 hours in 60 ℃ of baking oven moulds, the outer health of mould 24 hours, health is 20 hours in 20 ℃ ± 0.5 ℃ water-bath, uses automatic digital display Los Angeles abrasion instrument to carry out the Superpave mix-design test according to the T0733-2000 test method among the ministerial standard JTJ052-2000 of the Ministry of Communications " highway engineering pitch and asphalt testing regulation ".
Experimental result such as table 4.
Table 4 Superpave mix-design test-results
By table 4 as seen, the consumption of the cation-modified emulsified bitumen of SBR was greater than 9.3% o'clock of aggregate quality, the rate of loss of dispersing changes less, explanation is along with the continuation of the cation-modified emulsified bitumen consumption of SBR increases, the rate of loss of dispersing can not reduce significantly yet, big variation can not take place in the cohesive force between the compound yet, and this is worth as the cation-modified emulsified bitumen volume value of best SBR.
Can determine that by above 3 tests it is 9.3% of aggregate quality that the present invention selects the optimum amount of the cation-modified emulsified bitumen of SBR for use.
2, mixture performance test
Get rubble bits material 2.5kg in the basalt of particle diameter 5～10mm, 0.075 the basalt microlith of～3mm bits 7.5kg, common heavy 10kg gathers materials, the cation-modified emulsified bitumen of SBR (water oil ratio is 60%) 0.93kg, silicate cement 0.2kg, mass concentration is that 80% GYM-06 positively charged ion splits the fast type emulsifying agent emulsion 0.06kg of coagulating, water 0.5kg (comprising the water in the cation-modified emulsified bitumen of SBR, the auxiliary agent) slowly.
According to three test specimens that are of a size of 300mm * 300mm * 50mm of the preparation of the T0703-2000 specimen molding method in the Ministry of Communications's ministerial standard " highway engineering pitch and asphalt testing regulation ".And adopt the automatic rut instrument of multi-usage to test according to the T0719-1993 test method in the Ministry of Communications's ministerial standard " highway engineering pitch and asphalt testing regulation " and carry out wheel tracking test, the record testing data.
Test-results sees Table 5.
Table 5 wheel tracking test result
Annotate: in " asphalt highway construction technique normalizing " summer dynamic stability that the hot area requires modified asphalt mixture greater than 2800 (inferior/mm).
As shown in Table 5, the dynamic stability of three test specimens all 3600 times/more than the mm, be higher than in " asphalt highway construction technique normalizing " of the requirement of modified asphalt mixture dynamic stability, prove that raw material and the prepared test specimen of weight proportion thereof that the present invention is used have high temperature rutting resistance preferably greater than 2800 times/mm.
In order to verify beneficial effect of the present invention, the applicant adopts the raw material of the embodiment of the invention 1 and weight proportion and constructional method thereof in March, 2008 making deep layer micro surfacing functional layer of asphalt pavement test section on the bituminous pavement of Hefei to Tongling highway 9k-10k road section surface, and in May, 2008 is the making deep layer micro surfacing functional layer of asphalt pavement on the bituminous pavement of G107 Xinxiang-Zhengzhou section highway 680k-681k road section surface.By the JTJ05-95 of the Ministry of Communications " highway subgrade road surface on-the-spot test rules " construction depth, frictional coefficient, the infiltration coefficient of construction section are detected.
Testing tool: portable pendulum tester, produce by emerging highway Instr Ltd. of Shuyang, Jiangsu Province section; Sheet rubber, standard gage, commercially available, the tape measure of pavement temperature meter, commercially available; Artificial sanding instrument is produced by emerging highway Instr Ltd. of Shuyang, Jiangsu Province section; Amount sand, particle diameter 0.15～0.3mm; Steel Ruler, steel tape, commercially available; The infiltration coefficient instrument, sensible instrument plant produces by the Shuyang, Jiangsu.
Construction depth adopts artificial sanding instrument test, and frictional coefficient adopts the portable pendulum tester test, and infiltration coefficient adopts the test of infiltration coefficient instrument.
Test result sees Table 6.
Table 6 cling property and infiltration coefficient detect
By table 6 as seen, the deep layer micro surfacing functional layer that adopts raw material of the present invention and weight proportion thereof and constructional method to pave meets the Ministry of Communications's ministerial standard pavement performance requirement fully.
Claims (4)
1, a kind of deep layer micro surfacing functional layer of asphalt pavement is characterized in that it is to be become by following its raw materials in weight portion making:
Gather materials 100 parts
9～10 parts of the cation-modified emulsified bitumens of SBR
1～4 part of cement
0.2～1.0 part of auxiliary agent
4.0～6.5 parts in water.
Gathering materials in the said ratio is that particle diameter is the middle rubble bits material of 5～10mm and the compound of the microlith bits material that particle diameter is 0.075～3mm, and in its proportioning, middle rubble bits material is 1: 1～4 with the weight part ratio of microlith bits material; The water oil ratio of the cation-modified emulsified bitumen of SBR is 60%; Cement is 325# ordinary Portland cement or 425# ordinary Portland cement; Auxiliary agent is that mass concentration is that 80% GYM 06 positively charged ion splits the fast type emulsifying agent emulsion of coagulating slowly; Water in the proportioning comprises contained water in cation-modified emulsified bitumen of SBR and the auxiliary agent.
2,, it is characterized in that the raw materials used weight part proportioning of making deep layer micro surfacing functional layer of asphalt pavement is according to the described deep layer micro surfacing functional layer of asphalt pavement of claim 1:
Gather materials 100 parts
9～9.7 parts of the cation-modified emulsified bitumens of SBR
1～3 part of cement
0.4～0.8 part of auxiliary agent
4～6 parts in water.
3,, it is characterized in that the raw materials used weight part proportioning of making deep layer micro surfacing functional layer of asphalt pavement is according to the described deep layer micro surfacing functional layer of asphalt pavement of claim 1:
Gather materials 100 parts
9.3 parts of the cation-modified emulsified bitumens of SBR
2 parts of cement
0.6 part of auxiliary agent
5 parts in water.
4, a kind of constructional method of claim 1 deep layer micro surfacing functional layer of asphalt pavement is characterized in that it is made up of following step:
(1) milling
Remove former road surface with milling planing machine and deeply feel diseases such as deformation in the scope, check crack, polishing, milling become one smooth and be parallel to the shallow slot on original design road surface;
(2) spill the glutinous layer of cloth
Spill the cloth emulsified bitumen as glutinous layer at the milling bottom land;
(3) mix and stir and pave
Weight part proportioning by deep layer micro surfacing functional layer of asphalt pavement will be gathered materials, the cation-modified emulsified bitumen of SBR, cement, auxiliary agent, water, the place's of the deeply feeling paver of packing into mix and stir, and will do the mixture laying of becoming reconciled rapidly in the milling groove;
(4) compacting
With the compound compacting that street roller will pave, compacted depth is 25～30mm;
(5) health
Carry out health under the condition of controlled traffic and natural air drying, conditioned time is 3～4 hours;
(6) quality test
" highway subgrade road surface on-the-spot test rules " JTJ059-95 by the Ministry of Communications's issue detects, and transfers after the assay was approved and uses.
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