CN105350420A - Novel crack-resistant waterproof under-sealed layer - Google Patents

Novel crack-resistant waterproof under-sealed layer Download PDF

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Publication number
CN105350420A
CN105350420A CN201510654068.6A CN201510654068A CN105350420A CN 105350420 A CN105350420 A CN 105350420A CN 201510654068 A CN201510654068 A CN 201510654068A CN 105350420 A CN105350420 A CN 105350420A
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CN
China
Prior art keywords
glass fiber
pavement
sealed layer
under
modified emulsifying
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.)
Pending
Application number
CN201510654068.6A
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Chinese (zh)
Inventor
陈怡宏
凌天清
张纯洁
李海涛
刘燕燕
张意
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chongqing Construction Residential Engineering Co Ltd
Original Assignee
Chongqing Construction Residential Engineering Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Chongqing Construction Residential Engineering Co Ltd filed Critical Chongqing Construction Residential Engineering Co Ltd
Priority to CN201510654068.6A priority Critical patent/CN105350420A/en
Publication of CN105350420A publication Critical patent/CN105350420A/en
Pending legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01CCONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C7/00Coherent pavings made in situ
    • E01C7/08Coherent pavings made in situ made of road-metal and binders
    • E01C7/18Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders
    • E01C7/26Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders mixed with other materials, e.g. cement, rubber, leather, fibre
    • E01C7/262Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders mixed with other materials, e.g. cement, rubber, leather, fibre with fibrous material, e.g. asbestos; with animal or vegetal admixtures, e.g. leather, cork

Abstract

The invention discloses a novel crack-resistant waterproof under-sealed layer. The objective of the invention is to provide the under-sealed layer which has low cost, is simple to pave and can effectively prolong the service life of a semi-rigid base bituminous pavement and reduce maintenance cost. The under-sealed layer comprises a glass fiber reinforced material and modified emulsified bitumen, wherein the glass fiber reinforced material and the modified emulsified bitumen are uniformly distributed on the surface of a laid pavement, a ratio of the usage amount of the modified emulsified bitumen to the surface area of the laid pavement is no less than 1 kg/m2, and a ratio of the usage amount of the glass fiber reinforced material to the surface area of the laid pavement is no less than 60 g/m2. The novel crack-resistant waterproof under-sealed layer has good bonding force with an original pavement, high interlaminar shear strength and pull strength, good antiseepage performance, good anti-crack performance and low cost; and the under-sealed layer can be paved in one shot through a synchronous-fiber-cutting-and-sprinkling bitumen distribution truck, so paving process is simple.

Description

The anti-tremie seal of a kind of novel anti-crack
Technical field
The present invention relates to a kind of paving Sub-sealing Course, be specifically related to repaving of road surface of a kind of semi-rigid type base pitch cracking and load sealing.
Background technology
There is the reason of reflection crack in semi-rigid asphalt pavement, mainly due to cement stabilized type basic unit because aggregate grading design unreasonable (suspension compact), fines (below 0.075mm particle) content are too much, cement dose is higher, during construction, water content is excessive, and the semi-rigid type base cracking that after construction, the reasons such as health not in time or health-preserving method is improper cause.After base course crack, lose the ability of opposing tensile stress, just at crack location by Stress transmit to surface layer, form surface layer concentrated at the stress at cracking seam place.Particularly in the winter time under low temperature, the modulus of asphalt surface course is larger, it only can bear less thermal stresses, the tensile stress ratio that the stress concentration phenomenon at crack place makes traffic loading produce in asphalt surface course bottom does not have crannied position large, easily exceed the ultimate strength of bituminous concrete, cause asphalt surface course and then cracking.
In prior art, China's speedway semi-rigid asphalt pavement generally adopts Emulsified Asphalt Thin Paste Seal Technique to make Sub-sealing Course, its cracking resistance and water resistance do not reach desirable effect, and some engineering is even serving negative effect to interlayer c ohesion effect.Fiber reinforcement sealing covers is also just be able to from 2007 come into effect in China, but major part is external imported technology at present, and be not applicable to China's speedway, such as domestic speedway is enclosed type, and due to the setting of passage, its road surface is higher, this is different from external most of speedway, this also adds the cost of highway maintenance virtually, improves the performance requirement of highway maintenance, and the performances such as the bonding of Sub-sealing Course, waterproof just seem particularly important.
Summary of the invention
The object of this invention is to provide the Sub-sealing Course that a kind of cost is lower, paving process simple, effectively can extend the application life of semi-rigid asphalt pavement, reduce maintenance costs.
The present invention is achieved by the following technical solution:
The anti-tremie seal of a kind of novel anti-crack comprises glass fiber reinforced materials and modified emulsifying asphalt;
Wherein glass fiber reinforced materials and modified emulsifying asphalt are evenly distributed on road surface pavement surface, and modified emulsifying asphalt consumption and road surface pavement surface area ratio are not less than 1kg/m 2, the consumption of glass fiber reinforced materials and road surface pavement surface area ratio be not less than 60g/m 2.Because glass fiber has good reinforcement, dispersion, absorption and stabilization to pitch, and its cost is relatively cheap, therefore join road pavement shearing strength at intersection performance in modified emulsifying asphalt containing the goods of glass fiber and play humidification, also effectively can cushion the phenomenon of expanding with heat and contract with cold on road surface.The glass fiber that glass fiber reinforced materials both can be glass fiber also can be surface enhanced is modified herein.
Further, the glass fiber that described glass fiber reinforced materials is length is 4-8cm, glass fiber diameter is 1-30 μm.
Preferred further, the gross thickness of described glass fiber and modified emulsifying asphalt is not less than 0.6mm.
Further, described glass fiber is distributed as grid-like on road surface.Namely glass fiber is divided into warp-wise and broadwise, and both crisscross formation rectangular meshs, are similar to glass grid.
Preferred further, the warp-wise of described lattice-shaped fiberglass gridding is 1:(1-1.1 with broadwise ratio), radical length is 1-3cm.
Preferred further, described glass fiber is alkali-free glass fibre.
The present invention has the following advantages: strong with the adhesion stress on former road surface, interlaminar shear strength and pull strength high; All without seeping water after rolling rear Standard Test Method for Permeation Resistance by exposure rolling infiltration test and heat, percolation-proof performance is good; The fiber reinforcement sealing covers that when thin overlay is run through in crack, wheel load rolling layer is more general improves more than 20%, but cost then reduces more than 15%; The present invention sprays pitch sprinkling car one-time laying by fiber cut synchronistically and completes, and paving process is simple.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention will be further described.Described embodiment is only the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Embodiment 1
Road structure: sealing, modified emulsifying asphalt adhesion coating on upper layer 4cmSMA-13,0.6mm glass fiber reinforcement; Middle surface layer 6cmAC-20, modified emulsifying asphalt adhesion coating; Cutting optimal 8cmAC-25; Basic unit 0.6mm glass fiber reinforcing sub-seal layer (fiberglass gridding longitude and latitude is of a size of 1cm × 1cm), 25cm cement stabilized macadam base; Subbase 20cm cement stabilized macadam subbase.
The selection of material:
(1) modified emulsifying asphalt
Fiber reinforcement Sub-sealing Course adopts Shanghai Hui Cheng company to provide AWP-1000 modified emulsifying asphalt, and modified emulsifying asphalt spreading amount is 1.0-1.2kg/m 2.
(2) glass fiber
Select the non-twist coarse sand of E type alkali-free glass fibre, single fiber average diameter: 13 microns, size type: silane, fiber alkali content: <0.5%.GB/T18369-2001 standard that glass fiber meets " woven glass roving fabric ".Glass fiber consumption is 80g/m 2.Be mainly used in the place that disease and pest is fewer or pavement cracking is not serious.
(3) rubble
On the synchronous spray-up of modified emulsifying asphalt fiber, spreading particle diameter is single Stone of 5mm-10mm, and consumption is 70% ~ 80% of full paving quantity.The requirement that its quality should meet " standard specification for construction and acceptance of highway asphalt pavement (JTGF40-2004) ".
Execution conditions: during spread, temperature is not less than 10 DEG C, wind speed appropriateness, rains or thick fog weather must not be constructed.
Construction sequence:
(1) basal plane cleaning is clean, before covering layer making in 24h, adopt the complete intelligent bituminous sprinkling wagon of fiber reinforcement synchronously to spray fiber reinforcement Sub-sealing Course, fiber reinforcement sub-seal layer structure is modified emulsifying asphalt+glass fiber+modified emulsifying asphalt, and glass fibre length is 4-8cm.
(2) pitch sprinkling car is equipped with the nozzle that is applicable to different denseness asphalt distribution and manual uses spray gun, pitch sprinkling car spray less than place adopt manual sprinkling.
(3) before formal construction, the paragraph first selecting length to be not less than 200m carries out examination and sprays, and whether with the complete intelligent bituminous sprinkling wagon of testing fiber enhancing whether normal operation, it is accurate to measure.
(4) spread 5-10mm rubble, makes regular check on crushed stone spreading amount, ensures the requirement of gravel mulch rate 70-80%.
(5) broken stone distributor should travel continuously, evenly, avoids shutting down as far as possible, avoids neglecting fast neglecting slowly, is beneficial to the uniformity ensureing pitch thickness and building stones.Detect spread consumption by relevant requirements in " highway subgrade road surface on-the-spot test code " (JTJ059-95) and method, ensure that fiber reinforcement Sub-sealing Course spread quantity meets designing requirement, each detection is no less than 3 places.
(6) after fiber reinforcement Sub-sealing Course spread, forbid other vehicle and machinery to pass through, the travel speed of compound transport vehicle on fiber reinforcement Sub-sealing Course must not higher than 10Km/h.
(10) works near protection sprinkling district and surface of trees, polluted in order to avoid spatter pitch, when it is subject to polluting, removed in time.
Embodiment 2
Road structure: sealing, modified emulsifying asphalt adhesion coating on upper layer 4cmSMA-13,0.6mm glass fiber reinforcement; Middle surface layer 6cmAC-20, modified emulsifying asphalt adhesion coating; Cutting optimal 8cmAC-25; Basic unit 0.6mm glass fiber reinforcing sub-seal layer (fiberglass gridding longitude and latitude is of a size of 1.5cm × 1.5cm), 25cm cement stabilized macadam base; Subbase 20cm cement stabilized macadam subbase.
The selection of material:
(1) modified emulsifying asphalt
Fiber reinforcement Sub-sealing Course adopts Shanghai Hui Cheng company to provide AWP-1000 modified emulsifying asphalt, and modified emulsifying asphalt spread quantity is 1.6-1.8kg/m 2.
(2) glass fiber
Select the non-twist coarse sand of E type alkali-free glass fibre, single fiber average diameter: 26 microns, size type: silane, fiber alkali content: <0.5%.GB/T18369-2001 standard that glass fiber meets " woven glass roving fabric ".Glass fiber consumption is 100g/m 2.For pavement cracking or the more serious place of disease and pest.
(3) rubble
On the synchronous spray-up of modified emulsifying asphalt fiber, spreading particle diameter is single Stone of 5mm-10mm, and consumption is 70% ~ 80% of full paving quantity.The requirement that its quality should meet " standard specification for construction and acceptance of highway asphalt pavement (JTGF40-2004) ".
Execution conditions: during spread, temperature is not less than 10 DEG C, wind speed appropriateness, rains or thick fog weather must not be constructed.
Construction sequence:
(1) basal plane cleaning is clean, before covering layer making in 24h, adopts the complete intelligent bituminous sprinkling wagon of fiber reinforcement synchronously to spray fiber reinforcement Sub-sealing Course, and fiber reinforcement sub-seal layer structure is poly-modified emulsifying asphalt+glass fiber+modified emulsifying asphalt.
(2) pitch sprinkling car is equipped with the nozzle that is applicable to different denseness asphalt distribution and manual uses spray gun, pitch sprinkling car spray less than place adopt manual sprinkling.
(3) before formal construction, the paragraph first selecting length to be not less than 200m carries out examination and sprays, and whether with the complete intelligent bituminous sprinkling wagon of testing fiber enhancing whether normal operation, it is accurate to measure.
(4) spread 5-10mm rubble, makes regular check on crushed stone spreading amount, ensures the requirement of gravel mulch rate 70-80%.
(5) broken stone distributor should travel continuously, evenly, avoids shutting down as far as possible, avoids neglecting fast neglecting slowly, is beneficial to the uniformity ensureing pitch thickness and building stones.Detect spread consumption by relevant requirements in " highway subgrade road surface on-the-spot test code " (JTJ059-95) and method, ensure that fiber reinforcement Sub-sealing Course spread quantity meets designing requirement, each detection is no less than 3 places.
(6) after fiber reinforcement Sub-sealing Course spread, forbid other vehicle and machinery to pass through, the travel speed of compound transport vehicle on fiber reinforcement Sub-sealing Course must not higher than 10Km/h.
(7) works near protection sprinkling district and surface of trees, polluted in order to avoid spatter pitch, when it is subject to polluting, removed in time.
Embodiment 3
Road structure: sealing, modified emulsifying asphalt adhesion coating on upper layer 4cmSMA-13,0.6mm glass fiber reinforcement; Middle surface layer 6cmAC-20, modified emulsifying asphalt adhesion coating; Cutting optimal 8cmAC-25; Basic unit 0.6mm glass fiber reinforcing sub-seal layer (fiberglass gridding longitude and latitude is of a size of 2.5cm × 2.7cm),
25cm cement stabilized macadam base; Subbase 20cm cement stabilized macadam subbase.
The selection of material:
(1) modified emulsifying asphalt
Fiber reinforcement Sub-sealing Course adopts Shanghai Hui Cheng company to provide AWP-1000 modified emulsifying asphalt, and modified emulsifying asphalt spread quantity is 2.0-2.4kg/m 2.
(2) glass fiber
Select the non-twist coarse sand of E type alkali-free glass fibre, single fiber average diameter: 5 microns, size type: silane, fiber alkali content: <0.5%.GB/T18369-2001 standard that glass fiber meets " woven glass roving fabric ".Glass fiber consumption is 60g/m 2.Be mainly used in the place that disease and pest is few.
(3) rubble
On the synchronous spray-up of modified emulsifying asphalt fiber, spreading particle diameter is single Stone of 5mm-10mm, and consumption is 70% ~ 80% of full paving quantity.The requirement that its quality should meet " standard specification for construction and acceptance of highway asphalt pavement (JTGF40-2004) ".
Execution conditions: during spread, temperature is not less than 10 DEG C, wind speed appropriateness, rains or thick fog weather must not be constructed.
Construction sequence:
(1) basal plane cleaning is clean, before covering layer making in 24h, uses fiber cut synchronistically spraying technology to spray fiber reinforcement Sub-sealing Course, and fiber reinforcement sub-seal layer structure is poly-modified emulsifying asphalt+glass fiber+modified emulsifying asphalt.
(2) pitch sprinkling car is equipped with the nozzle that is applicable to different denseness asphalt distribution and manual uses spray gun, pitch sprinkling car spray less than place adopt manual sprinkling.
(3) before formal construction, the paragraph first selecting length to be not less than 200m carries out examination and sprays, and whether with the complete intelligent bituminous sprinkling wagon of testing fiber enhancing whether normal operation, it is accurate to measure.
(4) spread 5-10mm rubble, makes regular check on crushed stone spreading amount, ensures the requirement of gravel mulch rate 70-80%.
(5) broken stone distributor should travel continuously, evenly, avoids shutting down as far as possible, avoids neglecting fast neglecting slowly, is beneficial to the uniformity ensureing pitch thickness and building stones.Detect spread consumption by relevant requirements in " highway subgrade road surface on-the-spot test code " (JTJ059-95) and method, ensure that fiber reinforcement Sub-sealing Course spread quantity meets designing requirement, each detection is no less than 3 places.
(6) after fiber reinforcement Sub-sealing Course spread, forbid other vehicle and machinery to pass through, the travel speed of compound transport vehicle on fiber reinforcement Sub-sealing Course must not higher than 10Km/h.
(7) works near protection sprinkling district and surface of trees, polluted in order to avoid spatter pitch, when it is subject to polluting, removed in time.

Claims (6)

1. the anti-tremie seal of novel anti-crack, is characterized in that: comprise glass fiber reinforced materials and modified emulsifying asphalt;
Wherein glass fiber reinforced materials and modified emulsifying asphalt are evenly distributed on road surface pavement surface, and modified emulsifying asphalt consumption and road surface pavement surface area ratio are not less than 1kg/m 2, the consumption of glass fiber reinforced materials and road surface pavement surface area ratio be not less than 60g/m 2.
2. anti-cracking waterproof Sub-sealing Course according to claim 1, is characterized in that: the glass fiber that described glass fiber reinforced materials is length is 4-8cm, glass fiber diameter is 1-30 μm.
3. anti-cracking waterproof Sub-sealing Course according to claim 2, is characterized in that: the gross thickness of described glass fiber and modified emulsifying asphalt is not less than 0.6mm.
4. anti-cracking waterproof Sub-sealing Course according to claim 3, is characterized in that: described glass fiber is distributed as grid-like on road surface.
5. anti-cracking waterproof Sub-sealing Course according to claim 4, is characterized in that: the warp-wise of described lattice-shaped fiberglass gridding is 1:(1-1.1 with broadwise ratio), radical length is 1-3cm.
6. anti-cracking waterproof Sub-sealing Course as claimed in any of claims 1 to 5, is characterized in that: described glass fiber is alkali-free glass fibre.
CN201510654068.6A 2015-10-10 2015-10-10 Novel crack-resistant waterproof under-sealed layer Pending CN105350420A (en)

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Application Number Priority Date Filing Date Title
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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
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CN105350420A true CN105350420A (en) 2016-02-24

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1511882A (en) * 2002-12-27 2004-07-14 深圳市海川实业股份有限公司 Fiber reinforced emulsified pitch thin paste sealing layer
KR20110096519A (en) * 2011-07-29 2011-08-30 윤종식 Method of repairing an asphalt pavement and structure of the same
CN103485256A (en) * 2013-09-11 2014-01-01 长安大学 Grading glass fiber crushed stone seal coat preparation method
CN204000527U (en) * 2014-06-18 2014-12-10 西安公路研究院 A kind of old cement concrete pavement regeneration overlays road structure
CN204491348U (en) * 2015-03-26 2015-07-22 王家柱 A kind of asphalt pavement fiber reinforced lamina top facing

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1511882A (en) * 2002-12-27 2004-07-14 深圳市海川实业股份有限公司 Fiber reinforced emulsified pitch thin paste sealing layer
KR20110096519A (en) * 2011-07-29 2011-08-30 윤종식 Method of repairing an asphalt pavement and structure of the same
CN103485256A (en) * 2013-09-11 2014-01-01 长安大学 Grading glass fiber crushed stone seal coat preparation method
CN204000527U (en) * 2014-06-18 2014-12-10 西安公路研究院 A kind of old cement concrete pavement regeneration overlays road structure
CN204491348U (en) * 2015-03-26 2015-07-22 王家柱 A kind of asphalt pavement fiber reinforced lamina top facing

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Application publication date: 20160224