CN212357865U - High-strength stress absorbing patch - Google Patents
High-strength stress absorbing patch Download PDFInfo
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- CN212357865U CN212357865U CN202020079126.3U CN202020079126U CN212357865U CN 212357865 U CN212357865 U CN 212357865U CN 202020079126 U CN202020079126 U CN 202020079126U CN 212357865 U CN212357865 U CN 212357865U
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Abstract
The utility model discloses a high-strength stress absorbing paste, which comprises an absorbing paste main body, wherein an isolating layer is uniformly laid on the absorbing paste main body, and the isolating layer main body is made of 20-60-mesh high-strength and clean quartz sand; the base of the main body of the absorbing paste is soaked by the modified polymer, and the phenomenon of un-soaked stripes does not occur. Compared with the prior art, the utility model the advantage lie in: the composite geosynthetic material has the functions of stress absorption, interlayer bonding and water resistance, is an integrated road interlayer transition type material, selects high-performance tire base cloth with good bending resistance, high tensile strength and corrosion resistance as a base material, is compounded in a high-performance viscoelastic material with high softening point and good low-temperature flexibility at high temperature, is used as a novel composite geosynthetic material which is developed after integrating 'crack resistance paste, road and bridge waterproof coiled materials and AR-SAMI' and has the functions of water resistance, crack resistance, large deformation and transition bonding layer, has good compatibility with asphalt mixture, and is only accompanied with small deformation under the high-temperature and rolling states.
Description
Technical Field
The utility model relates to a road construction field specifically indicates a high-strength stress absorbs subsides.
Background
Cement concrete road surface is also called white road surface, and has the characteristics of high strength, long service life, simple construction, low cost and the like, and is a common road surface structure form of urban roads. However, with the development of cities, the traffic volume is greatly increased, and the defects of high noise, bumpiness of slab joints, poor driving comfort, long maintenance period and the like of cement concrete pavements are increasingly highlighted, so that in recent years, various cities are improved by additionally paving the asphalt concrete pavement (commonly called white and black pavements), not only can the waste of resources caused by digging out old pavements be avoided, but also the service performances of the pavement, such as skid resistance, noise reduction, durability, driving comfort and the like, can be greatly improved. At present, when the white and black are modified, most of the asphalt concrete pavements are directly paved on old cement concrete pavements, the process is simple, and the following two problems are gradually appeared in the using process: firstly, cracks and slab joints of the old cement concrete pavement are not specially treated, so that reflection cracks are easy to appear in the asphalt concrete overlay; and secondly, the cement concrete is a rigid base layer and does not have good load, stress and deformation diffusion capacity, so that the asphalt concrete overlay is easy to rut.
In order to avoid the reflection of structural reflection cracks in asphalt road engineering and temperature shrinkage cracks and load-type shear cracks among cement slabs in white and black modified road engineering to a surface layer, a layer of high-performance stress absorption paste is laid among the cement slabs, cement blocks or asphalt structural layers, so that the waterproof layer and the sticky layer are integrally sealed while the diseases such as reflection cracks, foundation water loss and the like are comprehensively prevented.
Therefore, it is imperative to design a high-strength stress absorbing patch.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is that lack a high performance stress absorption subsides in the current bituminous paving construction is used for asphalt concrete adds and lays the layer and easily appear reflection crack, does not possess good load, stress and deformation diffusion ability, leads to asphalt concrete to add and lays the layer and easily appear the rut, has not only improved manufacturing cost, has also increased personnel's work load.
In order to solve the technical problem, the utility model provides a technical scheme does: a high-strength stress absorbing patch comprises an absorbing patch main body, wherein an isolating layer is uniformly laid on the absorbing patch main body, and the isolating layer main body is made of 20-60-mesh high-strength and clean quartz sand;
the main body of the absorbing paste has the following specific specifications:
(1) the whole unit mass is 3.0 plus or minus 10 percent Kg per square meter;
(2) the whole thickness is 2.5 +/-5 percent mm;
(3) the longitudinal breaking strength is more than or equal to 7KN/200 mm; the transverse rupture strength is more than or equal to 9KN/200 mm;
(4) longitudinal elongation and transverse elongation of 3-10%;
(5) the longitudinal trapezoidal tearing strength is more than or equal to 300N; the transverse trapezoidal tearing strength is more than or equal to 400N;
(6) the burst strength of CBR is more than or equal to 2.5 KN;
(7) the water impermeability is realized by testing 120Min under the condition of 0.3 Mpa;
(8) the heat resistance is realized, and no flowing or dripping is realized under the test of 70 ℃;
(9) low-temperature flexibility and no crack at-15 ℃;
the base of the main body of the absorbing paste is soaked by the modified polymer, and the phenomenon of un-soaked stripes does not occur.
Compared with the prior art, the utility model the advantage lie in: have stress absorption, the layer is cohered and waterproof function, transition type material between road layer as an organic whole, the utility model discloses select anti folding performance good, tensile strength is high, anticorrosive high performance child base cloth for use as the substrate, in the high performance viscoelastic material that has high softening point, low temperature pliability is good through high temperature complex, as synthesize "anti-crack subsides, road and bridge waterproofing membrane, AR-SAMI" later develop a neotype have waterproof, crack control, large deformation and transition bonding layer function compound geosynthetic material, the utility model discloses have good compatibility with bituminous mixture to only along with little deformation under high temperature, the rolling state.
Drawings
Fig. 1 is a schematic structural view of a high-strength stress absorbing patch.
Fig. 2 is a schematic view of a process for manufacturing a high-strength stress absorbing patch.
As shown in the figure: 1. the absorption pastes main part, 2, isolation layer.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
When the utility model is implemented, the high-strength stress absorbing paste comprises an absorbing paste main body 2, wherein an isolating layer 1 is uniformly laid on the absorbing paste main body 2, and the main body of the isolating layer 1 is 20-60-mesh high-strength and clean quartz sand;
the absorption sticker main body 2 has the following specific specifications:
(1) the whole unit mass is 3.0 plus or minus 10 percent Kg per square meter;
(2) the whole thickness is 2.5 +/-5 percent mm;
(3) the longitudinal breaking strength is more than or equal to 7KN/200 mm; the transverse rupture strength is more than or equal to 9KN/200 mm;
(4) longitudinal elongation and transverse elongation of 3-10%;
(5) the longitudinal trapezoidal tearing strength is more than or equal to 300N; the transverse trapezoidal tearing strength is more than or equal to 400N;
(6) the burst strength of CBR is more than or equal to 2.5 KN;
(7) the water impermeability is realized by testing 120Min under the condition of 0.3 Mpa;
(8) the heat resistance is realized, and no flowing or dripping is realized under the test of 70 ℃;
(9) low-temperature flexibility and no crack at-15 ℃;
the base of the absorption sticker main body 2 is soaked by the modified polymer, and no un-soaked stripes appear.
The preparation process of the absorption sticker main body 2 comprises a material batching system and a production line system;
the material batching system consists of a grinder and a stirring tank, and the preparation process comprises the following steps:
during production, the asphalt is conveyed into a metering stirring tank according to the formula quantity, then SBS is added according to the formula quantity, after stirring and melting, other modifiers are added, after melting, the mixture is ground by an asphalt colloid mill, grinding and stirring are carried out for not less than 30min, and then the filling material is added for mixing and stirring.
The production line system conveys the modified mixture generated by the material batching system to an oiling pool, then the base is immersed in the pool, the felt body coated with the oil is coated with sand, namely the isolating layer 1 is arranged on the absorbing paste main body 2 according to the standard, and the finished product is prepared after calendaring and cooling.
The preparation process of the material batching system comprises the following specific steps:
(1) metering, namely, electronically metering asphalt, SBS modifier, styrene butadiene powdered rubber, modified material and filler according to the formula quantity and the batching sequence, and inputting the mixture into a batching tank;
(2) mixing and grinding, namely adding asphalt and base oil into a mixing tank according to the formula quantity, starting stirring, and controlling the temperature in the tank to be 180 +/-5 ℃;
adding SBS into a material mixing tank according to the formula quantity, controlling the temperature at 175-195 ℃, stirring and melting for 1 h;
the modifier is input into a proportioning tank according to the formula amount, the temperature is controlled to be 200-215 ℃, stirring and melting are carried out for 4-5 hours, grinding is carried out after melting, the grinding temperature is 190-220 ℃, and the grinding time is not less than 30 min.
After grinding, adding the filling material according to the formula quantity, and stirring for 30 minutes;
the preparation process of the production line system comprises the following specific steps:
(1) pre-soaking and coating, wherein the oil immersion temperature of the pre-soaking material is controlled to be 190-210 ℃ and the tire body is completely soaked; the oil coating temperature is controlled between 170 ℃ and 200 ℃; the coating material should not be less than 3/4 depth of the oil coating pool;
extruding the mixture to a specified thickness by upper and lower rollers of a press roller, cooling and laminating the mixture by a cooling water roller and a tire membrane laminating machine, and conveying the mixture to a cutting and winding unit;
(2) the prepared dip-coating material is qualified through inspection, the oil temperature is kept at 170-200 ℃ for standby, and the production is stopped when the temperature is lower than 170 ℃;
the product quality is tested according to the standard requirement of LHYN-anti-cracking paste Q31;
(3) packaging in rolls, respectively packaging and placing products with different types and lengths separately according to the specification, and sticking qualified marks;
the preparation process of the absorption plaster main body 2 has the following process indexes:
(1) inlet and outlet temperature of hot oil furnace: 220 to 290 ℃;
(2) temperature of finished product materials: the temperature of the finished product material is 170-200 ℃;
(3) oil coating temperature of coiled material: 170-200 ℃; pre-immersion oil temperature: 190-210 ℃;
(4) film coating temperature: 130 ℃ and 180 ℃;
(5) cooling water temperature: not more than 45 ℃;
(6) oil immersion softening point: 45-70 ℃;
(7) oiling and softening point: 85 to 105 ℃.
The process index is measured once per production tank.
The absorption paste main body 2 is prepared from the following raw materials in percentage by weight: 46-55% of asphalt, 7-10% of SBS, 1-3% of SIS, 8-15% of softening oil, 5-7% of asphalt modifier, 0.8-1.5% of auxiliary agent and 15-22% of filling material.
The utility model discloses a theory of operation: for the structural reflection crack of avoiding among the asphalt road engineering and the white crack of contracting of temperature between the cement slab in the road engineering, load type shearing crack reflect the surface course, lay the one deck between cement slab, water are steady or asphalt structure layer the utility model discloses, when can prevent disease such as reflection crack, basic water loss comprehensively, play the effect on whole sealing waterproof layer, glutinous layer again.
The utility model discloses an anti cracking property satisfies JT T971-2015 pitch and adds the layer and pastes technical specification requirement with polymer modified asphalt resistance, and waterproof performance satisfies JC/T974-2005 is modified asphalt waterproofing membrane standard specification requirement for the road bridge.
The utility model discloses a concrete application method:
(1) cleaning and sweeping the construction surface;
(2) spraying coating oil
Before the high-performance stress absorbing paste is paved, emulsified asphalt adhesive layer oil with the solid content of more than or equal to 50 percent is uniformly sprayed on the construction part, and the using amount is 0.5 to 1L/m2(depending on the roughness of the structural layer), after the emulsified asphalt is demulsified and the water is evaporated, paving a high-performance stress absorbing paste;
(3) high-strength stress absorbing plaster
And (3) unfolding the coiled high-performance stress absorbing paste according to the width required by the design, enabling one side of the isolating film to face downwards, tearing off the isolating film below, and flatly paving the high-performance stress absorbing paste on the base surface.
If the design requirement is that the high-performance stress absorbing paste is used for local joint sticking, the coiled high-performance stress absorbing paste is spread by taking the crack as a central line, and the left part and the right part are respectively laid with 1/2 on the anti-cracking part by taking the expansion joint (crack) as the central line. One side of the isolation film faces downwards, the isolation film below the isolation film is torn off, and the high-performance stress absorption patch is flatly paved on the foundation surface;
(4) after the high-strength stress absorbing paste is laid, flattening the high-strength stress absorbing paste by using a rubber wheel machine or a compression roller;
(5) overlapping the two high-strength stress absorbing pastes, wherein the width of the two high-strength stress absorbing pastes is 5-10 cm, and compacting the overlapped part by using a compression roller to ensure that the two high-strength stress absorbing pastes are firmly adhered;
(6) paving the asphalt concrete, and directly paving the asphalt concrete on the paved high-strength stress absorbing paste.
The utility model has the characteristics of environmental protection, regeneration, the fibre in the absorption subsides can be smashed during the use, has apparent improvement to old bituminous mixture performance after the remelting.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature, and in the description of the invention, "plurality" means two or more unless a limitation is explicitly stated.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may include, for example, fixed connections, detachable connections, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that changes, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the principles and spirit of the present invention.
Claims (1)
1. The utility model provides a high strength stress absorbs subsides, pastes main part (2) including absorbing, its characterized in that: the absorption paste main body (2) is uniformly laid with an isolation layer (1), and the isolation layer (1) main body is 20-60 meshes of high-strength and clean quartz sand;
the absorption paste main body (2) has the following specific specifications:
the whole unit mass is 3.0 plus or minus 10 percent Kg per square meter;
② the whole thickness is 2.5 plus or minus 5 percent mm;
third, the longitudinal fracture strength is more than or equal to 7KN/200 mm; the transverse rupture strength is more than or equal to 9KN/200 mm;
longitudinal elongation and transverse elongation are 3-10%;
fifthly, the longitudinal trapezoidal tearing strength is more than or equal to 300N; the transverse trapezoidal tearing strength is more than or equal to 400N;
sixthly, the burst strength of the CBR is more than or equal to 2.5 KN;
seventhly, water impermeability is realized by testing 120Min under the condition of 0.3 Mpa;
eighthly, heat resistance is realized, and no flow or dripping is realized under the condition of 70 ℃;
ninthly, flexibility at low temperature and no crack at-15 ℃;
the base of the absorption sticker main body (2) is soaked by the modified polymer, and no un-soaked stripes appear.
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| CN202020079126.3U CN212357865U (en) | 2020-01-15 | 2020-01-15 | High-strength stress absorbing patch |
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| CN202020079126.3U CN212357865U (en) | 2020-01-15 | 2020-01-15 | High-strength stress absorbing patch |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111139706A (en) * | 2020-01-15 | 2020-05-12 | 南京苏伊尔工程材料有限公司 | High-strength stress absorbing patch |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111139706A (en) * | 2020-01-15 | 2020-05-12 | 南京苏伊尔工程材料有限公司 | High-strength stress absorbing patch |
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Effective date of registration: 20220615 Address after: Room 3390, building A2, No. 216, puliu North Road, Getang street, Jiangbei new area, Nanjing, Jiangsu 210000 Patentee after: Nanjing suer Engineering Materials Co.,Ltd. Patentee after: Zhejiang Communications Resources Investment Group Co., Ltd. communications building materials branch Address before: Room 349, Datong eco industrial park, Baguazhou street, Qixia District, Nanjing City, Jiangsu Province, 210000 Patentee before: Nanjing suer Engineering Materials Co.,Ltd. |