CN106348656A - Manufacturing method of PVA (Polyvinyl Acetate) modified semi-flexible asphalt pavement material - Google Patents
Manufacturing method of PVA (Polyvinyl Acetate) modified semi-flexible asphalt pavement material Download PDFInfo
- Publication number
- CN106348656A CN106348656A CN201610700164.4A CN201610700164A CN106348656A CN 106348656 A CN106348656 A CN 106348656A CN 201610700164 A CN201610700164 A CN 201610700164A CN 106348656 A CN106348656 A CN 106348656A
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- Prior art keywords
- pva
- cement
- asphalt pavement
- modified cement
- modifying agent
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- 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
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Road Paving Structures (AREA)
Abstract
The invention relates to the field of traffic roads and in particular relates to a manufacturing method of a PVA (Polyvinyl Acetate) modified semi-flexible asphalt pavement material. The manufacturing method comprises: pouring a PVA modified cement-based pouring material into a matrix asphalt mixture, wherein the volume ratio of the PVA modified cement-based pouring material and the matrix asphalt mixture is 20 percent; after curing for 28 days, obtaining the PVA modified semi-flexible asphalt pavement material. According to the PVA modified cement-based pouring material, common Portland cement accounts for 57.500 percent to 64.516 percent, water accounts for 34.375 percent to 35.484 percent, a swelling agent accounts for 0 to 5.161 percent and a PVA modifier accounts for 0 to 3.125 percent. By adopting the manufacturing method of the PVA modified semi-flexible asphalt pavement material, the problem of a traditional semi-flexible asphalt pavement material that a low-temperature performance is not good is solved.
Description
Technical field
The present invention relates to traffic route field, specifically a kind of pva modification semi-flexible asphalt pavement material manufacture method.
Background technology
With the continuous development of China's transportation business, the volume of traffic and traffic axle carry increasingly to be increased so that facestock of satisfying the need
Material performance requirement increasingly improves.Because Colophonium belongs to viscoelasticity temperature sensing material, during summer high temperature, bituminous paving repeats in vehicular load
Under effect, easily cause rut disease, especially in freeway toll station gateway, route crossing, Large Longitudinal Slope section etc.,
Frequently braked due to vehicle, start-up operation, pavement track disease is even more serious, high degree impact road-ability and safety
Property.Compared with bituminous paving, though cement concrete pavement does not have problems, due to the presence of its seam, have a strong impact on
Road-ability；There is the drawbacks such as construction is complicated, later maintenance is difficult, open to traffic is slow in cement concrete pavement simultaneously.Ying Lu
Face diversification, the demand for development of functionalization, a kind of have concurrently bituminous paving, cement concrete pavement each advantage novel pavement should
Transport and raw half-flexible pavement.
Traditional semi-flexible asphalt pavement material is in mother asphalt mixture, and cement injection base grouting material, by mother
Mutual embedded squeezing effect between body asphalt aggregate and cement based slurry are collectively forming the strength of materials, thus improving road surface
Structure sheaf resists the ability of load action, makes road surface possess the feature coupled hardness with softness simultaneously.Traditional semi-flexible asphalt pavement material
Although it has extremely excellent high-temperature behavior can resist vehicular load, high degree mitigates pavement track disease, and engineering is promoted
In application process, such road surface occurs in that a series of destruction problem, as bad in cracking, cryogenic property etc., to a certain degree limits
The Technique Popularizing of semi-flexible asphalt pavement material and range of application.
Semi-flexible asphalt pavement material problems main cause is in rigidity characteris after hardening for cement-based grouting material, and
Mother asphalt mixture is the viscoelastic material possessing certain deformability, both material properties differences, leads to it to make in load
With lower internal generation cracking phenomena, the final overall performance affecting composite.
Content of the invention
The technical problem to be solved is: how to solve traditional semi-flexible asphalt pavement material cryogenic property bad
Problem.
The technical solution adopted in the present invention is: a kind of modified cement-based grouting material of pva it is characterised in that: quality hundred
Point ratio consists of: Portland cement 57.500% ~ 64.516%, water 34.375% ~ 35.484%, extender 0 ~ 5.161%,
Pva modifying agent 0 ~ 3.125%.
As a kind of optimal way: extender be calcium sulphoaluminate class td-u extender, pva modifying agent be pva-2099 or
pva-1788.
A kind of method making the modified cement-based grouting material of pva is it is characterised in that carry out according to the steps:
Step one, mass percent of the present invention prepare material, add water in pva modifying agent, and pva modifying agent quality accounts for
Pva modifying agent and the 9% of water gross mass, standing, after 12 hours, is warmed up to 90～95 DEG C in a water bath, and insulation obtains pva in 30 minutes
Modifier solution；
Step 2, the pva modifier solution preparing remaining water and step one, add in blender, after stirring 30 seconds, will be general
Logical portland cement, extender are added sequentially in blender, are stirred for 30 seconds, stop stirring standing 90 seconds, then proceed to stir
Mix 60s, obtain the modified cement-based grouting material of pva.
A kind of pva modification semi-flexible asphalt pavement material manufacture method, modified cement-based for pva grouting material is poured into mother
In body asphalt, the modified cement-based grouting material of pva and mother asphalt mixture volume ratio are 20%, after maintenance 28 days, obtain
To pva modification semi-flexible asphalt pavement material.
The invention has the beneficial effects as follows: using pva, cement-based grouting material is modified, is increasing cement-based grout material
While material intensity, improve its crooked deformability so as to possess certain pliability, improve conventional cement base grouting material
The deformation mismatch problem causing because material properties are different from mother asphalt mixture.Pva cement-based grouting material is irrigated
In mother asphalt mixture, form pva modification semi-flexible asphalt pavement material, this material possesses extremely strong anti-rut behavior
While (ds be more than 20000 times/mm), its crack resistance at low-temperature (bending stress is more than 9mpa, bending strain be more than 3500 ×
10-6) exceed well over the technical requirements to bituminous paving for the related specifications, overcoming traditional semi-flexible asphalt pavement material cannot be applied to
The restriction of extremely frigid zones, in-depth has been expanded semi-flexible asphalt pavement technique and has been promoted and range of application.
Specific embodiment
Herein below, is only presently preferred embodiments of the present invention, and not the present invention is made with any pro forma restriction；Without departing from
The content of technical solution of the present invention, only makees any simple modification, equivalent variations and modification, belongs to technical solution of the present invention
In the range of.
(1) taking prepare pva of the present invention modified cement-based grouting material 1000g as a example, raw materials used and proportioning is as follows:
P.o 42.5 Portland cement 593.17g
Water 354.61g
Calcium sulphoaluminate class td-u extender 51.58g
Pva-2099 modifying agent 0.64g
(2) weigh each composition material according to the present invention above-mentioned quality partition ratio, prepare the modified cement-based grouting material of pva first:
Pva-2099 adds immersion 12h in suitable quantity of water (pva-2099 solution concentration is 9%), is then placed in water-bath and gradually heats up
It is heated to 90～95 DEG C, keep bath temperature to dissolve 30 minutes under the conditions of being 90～95 DEG C, thus prepare pva-2099 molten
Liquid.By water, pva-2099 solution add glue sand agitator agitated kettle in, after carrying out stirring at low speed 30 seconds, second 30 seconds
While beginning, cement, extender are passed sequentially through blanking funnel and adds agitated kettle, then high-speed stirred 30 seconds.Stop mixing 90 seconds, use
Paste materials on blade and pot wall are scraped in pot by rubber scraping, continue stirring 60 seconds at high speeds.Thus prepare pva
Modified cement-based grouting material.
(3) according in " highway engineering cement and cement concrete testing regulationss " (jtg e30-2005, t 0506-2005)
Method test pva modified cement-based grouting material comprcssive strength, rupture strength, modified using three point bending test test pva
Cement-based grouting material deformability.Result shows, compared with conventional cement base grouting material (the poly- glue of pva than for 0), pva changes
Property its comprcssive strength of cement-based grouting material, rupture strength, bending strain dramatically increase.
(4) indoor employing takes turns rolled-on method molding mother asphalt mixture.Forming temperature is: 150 DEG C of Colophonium preheating temperature, collection
Expect 160 DEG C of preheating temperature, mix and stir 145 DEG C of temperature, 140 DEG C of rolling temperature；Treat that mother asphalt mixture is cooled to room temperature and can enter
Row cement injection base grouting material.
(5) modified cement-based for the pva preparing grouting material is poured in mother asphalt mixture immediately, concrete grammar
For: debugging cement molding oscillating table, mother asphalt mixture is positioned on cement vibration table；The grouting material of mixing is poured
On mother asphalt mixture, during answer and pour in vibration；Do not ooze down Deng slurry, vibration table can be closed, scraper is wiped off
Flat surface cement mortar, standing, after 24 hours, is placed in temperature and is 20 DEG C ± 3 DEG C, and humidity is more than or equal to 90% health preserving interior health preserving 28
My god.Thus prepare pva modification semi-flexible asphalt pavement material.
(6) according in " highway engineering Colophonium and Asphalt Mixture Experiment code " (jtg e20-2011, t 0715-2011)
Method, carry out half-flexible pavement material at low temperature bend test.Result shows, compared with traditional semi-flexible asphalt pavement material,
Pva modification its low-temperature bending stress of semi-flexible asphalt pavement material, low-temperature bending strain are all significantly increased, and amplification respectively reaches
46.33%th, 11.92%, and meet the associated specifications of bituminous paving, show pva modification semi-flexible drip involved in the present invention
Blue or green ground surface material and preparation method thereof has a clear superiority than traditional semi-flexible asphalt pavement material, solves traditional semi-flexible drip
The bad problem of blue or green ground surface material cryogenic property.
Claims (4)
1. a kind of modified cement-based grouting material of pva it is characterised in that: mass percent consists of: Portland cement
57.500% ~ 64.516%, water 34.375% ~ 35.484%, extender 0 ~ 5.161%, pva modifying agent 0 ~ 3.125%.
2. a kind of modified cement-based grouting material of pva according to claim 1 it is characterised in that: extender is sulfur aluminic acid
Calcium class td-u extender, pva modifying agent is pva-2099 or pva-1788.
3. a kind of method making the modified cement-based grouting material of pva described in claim 1 is it is characterised in that according to following step
Suddenly carry out:
Step one, according to described in claim 1 mass percent prepare material, in pva modifying agent add water, pva modifying agent
Quality accounts for the 9% of pva modifying agent and water gross mass, and standing, after 12 hours, is warmed up to 90～95 DEG C in a water bath, is incubated 30 minutes
Obtain pva modifier solution；
Step 2, the pva modifier solution preparing remaining water and step one, add in blender, after stirring 30 seconds, will be general
Logical portland cement, extender are added sequentially in blender, are stirred for 30 seconds, stop stirring standing 90 seconds, then proceed to stir
Mix 60s, obtain the modified cement-based grouting material of pva.
4. a kind of pva modification semi-flexible asphalt pavement material manufacture method it is characterised in that: by modified cement-based for pva injection material
Material is poured in mother asphalt mixture, and the modified cement-based grouting material of pva and mother asphalt mixture volume ratio are 20%, support
Shield, after 28 days, obtains pva modification semi-flexible asphalt pavement material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610700164.4A CN106348656A (en) | 2016-08-22 | 2016-08-22 | Manufacturing method of PVA (Polyvinyl Acetate) modified semi-flexible asphalt pavement material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610700164.4A CN106348656A (en) | 2016-08-22 | 2016-08-22 | Manufacturing method of PVA (Polyvinyl Acetate) modified semi-flexible asphalt pavement material |
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| CN106348656A true CN106348656A (en) | 2017-01-25 |
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| CN201610700164.4A Pending CN106348656A (en) | 2016-08-22 | 2016-08-22 | Manufacturing method of PVA (Polyvinyl Acetate) modified semi-flexible asphalt pavement material |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107915427A (en) * | 2017-11-17 | 2018-04-17 | 苏州三创路面工程有限公司 | A kind of half-flexible pavement material and pavement construction engineering method |
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|---|---|---|---|---|
| KR100799501B1 (en) * | 2005-05-31 | 2008-01-31 | 김미순 | Semi flexible pavement composition for non-slip containing elvan and construction method using the same |
| CN101581066A (en) * | 2009-06-10 | 2009-11-18 | 重庆交通大学 | Water conservation temperature reduction half-flexible pavement and construction method thereof |
| CN101693611A (en) * | 2009-09-30 | 2010-04-14 | 长安大学 | Semi-flexible pavement injection grout |
| CN101857401A (en) * | 2010-05-13 | 2010-10-13 | 广东龙湖科技有限公司 | Self-inflow type semi-flexible composite pavement and construction method thereof |
| CN105016678A (en) * | 2015-07-08 | 2015-11-04 | 水利部交通运输部国家能源局南京水利科学研究院 | High-early-strength cement-based filling material for semi-flexible composite pavements |
-
2016
- 2016-08-22 CN CN201610700164.4A patent/CN106348656A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100799501B1 (en) * | 2005-05-31 | 2008-01-31 | 김미순 | Semi flexible pavement composition for non-slip containing elvan and construction method using the same |
| CN101581066A (en) * | 2009-06-10 | 2009-11-18 | 重庆交通大学 | Water conservation temperature reduction half-flexible pavement and construction method thereof |
| CN101693611A (en) * | 2009-09-30 | 2010-04-14 | 长安大学 | Semi-flexible pavement injection grout |
| CN101857401A (en) * | 2010-05-13 | 2010-10-13 | 广东龙湖科技有限公司 | Self-inflow type semi-flexible composite pavement and construction method thereof |
| CN105016678A (en) * | 2015-07-08 | 2015-11-04 | 水利部交通运输部国家能源局南京水利科学研究院 | High-early-strength cement-based filling material for semi-flexible composite pavements |
Non-Patent Citations (1)
| Title |
|---|
| 成志强等: "《PVA对半柔性路面材料低温性能改善及机理研究》", 《武汉理工大学学报》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107915427A (en) * | 2017-11-17 | 2018-04-17 | 苏州三创路面工程有限公司 | A kind of half-flexible pavement material and pavement construction engineering method |
| CN107915427B (en) * | 2017-11-17 | 2020-10-09 | 苏州三创路面工程有限公司 | Construction method of semi-flexible pavement material |
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