CN105421227A - High-strength expansion joint - Google Patents
High-strength expansion joint Download PDFInfo
- Publication number
- CN105421227A CN105421227A CN201510977304.8A CN201510977304A CN105421227A CN 105421227 A CN105421227 A CN 105421227A CN 201510977304 A CN201510977304 A CN 201510977304A CN 105421227 A CN105421227 A CN 105421227A
- Authority
- CN
- China
- Prior art keywords
- shrinkage joint
- asphalt mixture
- modified asphalt
- expansion joint
- modified
- 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
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/06—Arrangement, construction or bridging of expansion joints
- E01D19/067—Flat continuous joints cast in situ
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Road Paving Structures (AREA)
- Sealing Material Composition (AREA)
Abstract
The invention discloses a high-strength expansion joint. The expansion joint is filled and sealed with a modified asphalt mixture, and the modified asphalt mixture is prepared from basalt fiber, limestone ore powder, high-viscosity asphalt modifier and asphalt. The construction process of the expansion joint includes the following steps of a, processing a notch of the expansion joint; b, smearing with a modified asphalt cementing agent; c, installing an expansion joint steel plate; d, sealing and filling the expansion joint with the modified asphalt mixture; e, leveling pit slot filler of the expansion joint. By means of the high-strength expansion joint, by optimizing the filling material and optimizing the construction process, the strength of the expansion joint is greatly improved, the service life of the expansion joint is greatly prolonged, and the weather resistance, safety and stability of the expansion joint are greatly enhanced.
Description
Technical field
The present invention relates to a kind of shrinkage joint, be specifically related to a kind of high strength shrinkage joint, belong to shrinkage joint technical field.
Background technology
Shrinkage joint refers to as preventing building member from changing due to climate temperature, as heat expansion, shrinkage, makes structure produce crack or destruction and a build joint arranging along the suitable position in building or structure constuction joint direction.Building unit more than basis can be divided into two independent sectors as body of wall, floor, roof by shrinkage joint, makes building or structure can do horizontal extension along length direction.Shrinkage joint, except being widely used in except in building, is applied also widely in the construction of road and bridge.
The design of bridge expanssion joint, installation and maintenance, for bridge use safety, driving a vehicle comfortable and attractive in appearancely all plays considerable effect.At present, the deficiency of many small bridge shrinkage joint owing to existing in materials, construction quality etc., there is more problem after a procedure, especially under complex environment, bridge expanssion joint strength character is degenerated more serious, this brings very large psychological sense of insecurity not only to driving personnel, and along with shock effects such as the driving day by day increased, noises, more and more have influence on the safety of bridge main body structure.
Summary of the invention
For the demand, the invention provides a kind of high strength shrinkage joint, this shrinkage joint, by preferably filling out closure material, Optimizing construction technique, not only greatly improves intensity and the application life at shrinkage joint, and greatly strengthen weatherability and the security and stability at shrinkage joint.
The present invention is a kind of high strength shrinkage joint, described shrinkage joint adopts modified asphalt mixture to carry out filling out envelope, described modified asphalt mixture is made up of basalt fibre, limestone mineral powder, high-viscosity bitumen modifier and pitch, the construction technology at described shrinkage joint comprises the steps: a) to process shrinkage joint notch, b) modified bitumen cementitious matter is smeared, c) shrinkage joint steel plate is installed, d) fills out envelope modified asphalt mixture, e) flatten hole, shrinkage joint groove filler.
In a preferred embodiment of the present invention, the percentage by weight of the material composition that described modified asphalt mixture comprises is: basalt fibre 1.4%, limestone mineral powder 5.6%, high-viscosity bitumen modifier 1%, pitch 92%.
In a preferred embodiment of the present invention, the preparation of described modified asphalt mixture comprises the steps: 1) limestone mineral powder is heated to 195 DEG C, add basalt fibre, dry mixing 30s at 180 DEG C; 2) high-viscosity bitumen modifier is added, dry mixing 60s at 185 DEG C; 3) pitch is added, wet-mixing 3min at 170 DEG C.
In a preferred embodiment of the present invention, in described step b), modified bitumen cementitious matter is made up of the raw material of following percetage by weight: 50% petroleum bitumen, 12% butyl rubber, 8% modified rosin resin, 10% mica powder, 20% mixed solvent.
In a preferred embodiment of the present invention, described mixed solvent is 4: 7: 4 formulated in mass ratio by 120# solvent naphtha, ethyl acetate, acetone.
In a preferred embodiment of the present invention, in described step d), fill out envelope modified asphalt mixture and comprise the steps: 1) by modified asphalt mixture and modified bitumen cementitious matter at 165 DEG C in mass ratio 5:1 be uniformly mixed; 2) spice is poured in the notch of shrinkage joint.
Present invention is disclosed a kind of high strength shrinkage joint, this shrinkage joint, by preferably filling out closure material, Optimizing construction technique, not only greatly improves intensity and the application life at shrinkage joint, and greatly strengthen weatherability and the security and stability at shrinkage joint.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation:
Fig. 1 is the process figure of embodiment of the present invention high strength shrinkage joint construction technology.
Detailed description of the invention
Below in conjunction with accompanying drawing, preferred embodiment of the present invention is described in detail, can be easier to make advantages and features of the invention be readily appreciated by one skilled in the art, thus more explicit defining is made to protection scope of the present invention.
Fig. 1 is the process figure of embodiment of the present invention high strength shrinkage joint construction technology; This shrinkage joint adopts modified asphalt mixture to carry out filling out envelope, described modified asphalt mixture is made up of basalt fibre, limestone mineral powder, high-viscosity bitumen modifier and pitch, the construction technology at described shrinkage joint comprises the steps: a) to process shrinkage joint notch, b) modified bitumen cementitious matter is smeared, c) shrinkage joint steel plate is installed, d) fill out envelope modified asphalt mixture, e) flatten hole, shrinkage joint groove filler.
The high strength shrinkage joint that the present invention mentions with homemade modified asphalt mixture for filling out closure material, with homemade modified bitumen cementitious matter for construction bonding adhesive, by adopting the construction technology of science, achieve the significant increase of the combination properties such as bridge expanssion joint intensity, weatherability, security and stability.Wherein, modified asphalt mixture is made up of the raw material of following weight percents: 1.4% basalt fibre, 5.6% limestone mineral powder, 1% high-viscosity bitumen modifier, 92% pitch.This modified asphalt mixture has excellent composite strengthening performance, high-temperature stability and water stability; Basalt fibre wherein has high-tensile, high elastic modulus, can significantly improve the anti-shearing flow deformation ability of high temperature and the anti-fatigue performance of bituminous mixture; High-viscosity bitumen modifier viscosity is large, and itself and mineral aggregate adhesion stress by force, have good compatibility with petroleum bitumen.The preparation process of this modified asphalt mixture is: by weight percentage, first the limestone mineral powder of 5.6% is heated to 195 DEG C, then adds the basalt fibre of 1.4%, dry mixing 30s at 180 DEG C; Add the high-viscosity bitumen modifier of 1% afterwards, dry mixing 60s at 185 DEG C; Finally add the petroleum bitumen of 92%, wet-mixing 3min at 170 DEG C.
The modified bitumen cementitious matter that intensity is high, cementability is good has been selected at the high strength shrinkage joint that the present invention proposes in work progress, this modified bitumen cementitious matter is made up of the raw material of following percetage by weight: 50% petroleum bitumen, 12% butyl rubber, 8% modified rosin resin, 10% mica powder, 20% mixed solvent; Wherein, mixed solvent is 4: 7: 4 formulated in mass ratio by 120# solvent naphtha, ethyl acetate, acetone.The preparation process of this modified bitumen cementitious matter is: by weight percentage, first by the petroleum bitumen thermal dehydration of 50%, then is warming up to 280 DEG C, stirs 30min; Then add the modified rosin resin of 8% and the butyl rubber of 12%, continue to stir 40min; Be cooled to 160 DEG C afterwards, add the mica powder of 10%, stir; Finally add the mixed solvent of 20%, be transferred to discharging after suitable viscosity.
Embodiment
Concrete construction method is as follows:
A) process shrinkage joint notch, first dug shrinkage joint notch according to expansion gap device size, then with foreign material residual in clean water notch, and dry notch with flame projector.
B) smear modified bitumen cementitious matter, the modified bitumen cementitious matter of preparation is spread upon notch inwall, notch inwall is all covered bituminous cements coating that last layer thickness is 2mm.
C) shrinkage joint steel plate is installed, first processing of rust removing is carried out to steel plate, in order to avoid affect bonding property, then shrinkage joint steel plate is installed, connection gap place pad lead-in afterwards between steel plate, play the effect preventing bituminous cements seepage, finally on steel plate, brushing a layer thickness is the modified bitumen cementitious matter of about 1mm.
D) fill out envelope modified asphalt mixture, first by modified asphalt mixture and modified bitumen cementitious matter at 165 DEG C in mass ratio 5:1 be uniformly mixed; After mix is even, spice is poured in the notch of shrinkage joint.
E) flatten hole, shrinkage joint groove filler, first tamping filler in notch with dull and stereotyped and flatten, guarantee planeness, then smears one deck modified bitumen cementitious matter at the filling surface of notch plane, to ensure that filler seam crossing has good caking property.
Present invention is disclosed a kind of high strength shrinkage joint, this shrinkage joint, by preferably filling out closure material, Optimizing construction technique, not only greatly improves intensity and the application life at shrinkage joint, and greatly strengthen weatherability and the security and stability at shrinkage joint.
The above; be only the specific embodiment of the present invention; but protection scope of the present invention is not limited thereto; any those of ordinary skill in the art are in the technical scope disclosed by the present invention; the change can expected without creative work or replacement, all should be encompassed within protection scope of the present invention.Therefore, the protection domain that protection scope of the present invention should limit with claims is as the criterion.
Claims (6)
1. a high strength shrinkage joint, it is characterized in that, described shrinkage joint adopts modified asphalt mixture to carry out filling out envelope, described modified asphalt mixture is made up of basalt fibre, limestone mineral powder, high-viscosity bitumen modifier and pitch, the construction technology at described shrinkage joint comprises the steps: a) to process shrinkage joint notch, b) smears modified bitumen cementitious matter, c) installs shrinkage joint steel plate, d) fill out envelope modified asphalt mixture, e) flatten hole, shrinkage joint groove filler.
2. high strength shrinkage joint according to claim 1, is characterized in that, the percentage by weight of the material composition that described modified asphalt mixture comprises is: basalt fibre 1.4%, limestone mineral powder 5.6%, high-viscosity bitumen modifier 1%, pitch 92%.
3. high strength shrinkage joint according to claim 1, is characterized in that, the preparation of described modified asphalt mixture comprises the steps: 1) limestone mineral powder is heated to 195 DEG C, add basalt fibre, dry mixing 30s at 180 DEG C; 2) high-viscosity bitumen modifier is added, dry mixing 60s at 185 DEG C; 3) pitch is added, wet-mixing 3min at 170 DEG C.
4. high strength shrinkage joint according to claim 1, is characterized in that, in described step b), modified bitumen cementitious matter is made up of the raw material of following percetage by weight: 50% petroleum bitumen, 12% butyl rubber, 8% modified rosin resin, 10% mica powder, 20% mixed solvent.
5. high strength shrinkage joint according to claim 4, is characterized in that, described mixed solvent is 4: 7: 4 formulated in mass ratio by 120# solvent naphtha, ethyl acetate, acetone.
6. high strength shrinkage joint according to claim 1, is characterized in that, in described step d), fills out envelope modified asphalt mixture and comprises the steps: 1) by modified asphalt mixture and modified bitumen cementitious matter at 165 DEG C in mass ratio 5:1 be uniformly mixed; 2) spice is poured in the notch of shrinkage joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510977304.8A CN105421227A (en) | 2015-12-23 | 2015-12-23 | High-strength expansion joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510977304.8A CN105421227A (en) | 2015-12-23 | 2015-12-23 | High-strength expansion joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105421227A true CN105421227A (en) | 2016-03-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510977304.8A Pending CN105421227A (en) | 2015-12-23 | 2015-12-23 | High-strength expansion joint |
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| CN (1) | CN105421227A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108316135A (en) * | 2018-02-07 | 2018-07-24 | 中山市易路美道路养护科技有限公司 | A kind of bridge beam gap filling and repairing technique |
| CN111335156A (en) * | 2020-03-01 | 2020-06-26 | 河南交通职业技术学院 | Basalt fiber comb plate, and telescopic component and telescopic device using comb plate |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5024554A (en) * | 1990-02-22 | 1991-06-18 | Koch Materials Company | Bridge joint construction |
| CN1384246A (en) * | 2001-05-09 | 2002-12-11 | 衡水橡胶股份有限公司 | Manufacture of buried extension joint with modified asphalt |
| CN103147395A (en) * | 2013-03-01 | 2013-06-12 | 青岛宝基利工程技术咨询有限公司 | Method for filling hinge joint of fabricated prestressed hollow beam slab |
| CN203034334U (en) * | 2012-11-30 | 2013-07-03 | 浙江信博城市建设有限公司 | Crack repairing structure for asphalt concrete pavement |
| CN103288385A (en) * | 2013-06-04 | 2013-09-11 | 重庆佳厚建筑材料有限公司 | Expansion joint material for bridge and expansion joint structure |
-
2015
- 2015-12-23 CN CN201510977304.8A patent/CN105421227A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5024554A (en) * | 1990-02-22 | 1991-06-18 | Koch Materials Company | Bridge joint construction |
| CN1384246A (en) * | 2001-05-09 | 2002-12-11 | 衡水橡胶股份有限公司 | Manufacture of buried extension joint with modified asphalt |
| CN203034334U (en) * | 2012-11-30 | 2013-07-03 | 浙江信博城市建设有限公司 | Crack repairing structure for asphalt concrete pavement |
| CN103147395A (en) * | 2013-03-01 | 2013-06-12 | 青岛宝基利工程技术咨询有限公司 | Method for filling hinge joint of fabricated prestressed hollow beam slab |
| CN103288385A (en) * | 2013-06-04 | 2013-09-11 | 重庆佳厚建筑材料有限公司 | Expansion joint material for bridge and expansion joint structure |
Non-Patent Citations (5)
| Title |
|---|
| 傅和青等: ""改性沥青胶粘剂的研究"", 《新型建筑材料》 * |
| 张玉龙等: "《环保胶黏剂原料及典型配方》", 30 April 2010, 化学工业出版社 * |
| 李和平: "《木材胶黏剂》", 31 January 2009, 化学工业出版社 * |
| 陈思强: ""改性沥青填料桥梁伸缩缝设计与应用"", 《公路交通科技（应用技术版）》 * |
| 韩君等: ""玄武岩纤维增强高粘沥青混合料制备工艺与性能研究"", 《中外公路》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108316135A (en) * | 2018-02-07 | 2018-07-24 | 中山市易路美道路养护科技有限公司 | A kind of bridge beam gap filling and repairing technique |
| CN111335156A (en) * | 2020-03-01 | 2020-06-26 | 河南交通职业技术学院 | Basalt fiber comb plate, and telescopic component and telescopic device using comb plate |
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Application publication date: 20160323 |