CN110904760A - Roadbed water absorption blanket and road - Google Patents
Roadbed water absorption blanket and road Download PDFInfo
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- CN110904760A CN110904760A CN201911345275.8A CN201911345275A CN110904760A CN 110904760 A CN110904760 A CN 110904760A CN 201911345275 A CN201911345275 A CN 201911345275A CN 110904760 A CN110904760 A CN 110904760A
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- roadbed
- water absorption
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 204
- 238000010521 absorption reaction Methods 0.000 title claims abstract description 160
- 239000000835 fiber Substances 0.000 claims abstract description 105
- 239000002250 absorbent Substances 0.000 claims description 107
- 230000002745 absorbent Effects 0.000 claims description 95
- 229920001971 elastomer Polymers 0.000 claims description 5
- 239000000806 elastomer Substances 0.000 claims description 5
- 238000004132 cross linking Methods 0.000 claims description 4
- -1 polyethylene terephthalate Polymers 0.000 claims description 4
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 4
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 4
- 229920000642 polymer Polymers 0.000 claims description 4
- 229920005989 resin Polymers 0.000 claims description 4
- 239000011347 resin Substances 0.000 claims description 4
- 238000010276 construction Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 239000010426 asphalt Substances 0.000 description 5
- 229920006395 saturated elastomer Polymers 0.000 description 5
- 125000004122 cyclic group Chemical group 0.000 description 4
- 239000011148 porous material Substances 0.000 description 4
- 239000002689 soil Substances 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 3
- 239000004927 clay Substances 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000009736 wetting Methods 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C3/00—Foundations for pavings
- E01C3/04—Foundations produced by soil stabilisation
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/10—Improving by compacting by watering, draining, de-aerating or blasting, e.g. by installing sand or wick drains
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/10—Improving by compacting by watering, draining, de-aerating or blasting, e.g. by installing sand or wick drains
- E02D3/103—Improving by compacting by watering, draining, de-aerating or blasting, e.g. by installing sand or wick drains by installing wick drains or sand bags
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0051—Including fibers
- E02D2300/0054—Including fibers made from plastic
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Civil Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Soil Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Agronomy & Crop Science (AREA)
- General Engineering & Computer Science (AREA)
- Architecture (AREA)
- Road Paving Structures (AREA)
Abstract
The invention belongs to the technical field of road construction, and particularly relates to a roadbed water absorption blanket and a road. The roadbed water absorption blanket can absorb water in the roadbed to the first water absorption layer and the second water absorption layer, then the water on the first water absorption layer and the second water absorption layer extends along the length direction of the water absorption fiber bundles inside the roadbed water absorption blanket, and finally the water is evaporated and discharged from the end part of the water absorption fiber bundles in the exposed air, so that the water in the roadbed is effectively discharged, the water content of the roadbed is reduced, the problem of roadbed humidification is solved, and the effect of improving the service performance of the roadbed is achieved.
Description
Technical Field
The invention belongs to the technical field of road construction, and particularly relates to a roadbed water absorption blanket and a road.
Background
At present, the total highway mileage in China reaches 484.65 kilometers, wherein the highway reaches 14.26 kilometers and is the first place in the world. But the road service performance reduction and the disease occurrence caused by the roadbed humidification of the expressway cause a heavy economic burden on the road maintenance of China. At present, in engineering measures for preventing the subgrade from being humidified, measures such as water isolation and drainage are mostly adopted in the past to reduce rainwater from invading the subgrade, the laying cost of a water-proof layer is high, water is greatly accumulated near the water-proof layer due to water vapor migration, the water content of a soil body near the water-proof layer is greatly improved, and new hidden danger of diseases can be formed; in addition, most of roadbed soil bodies are unsaturated cohesive soil, water migration is slow, and the water is difficult to discharge by using the commonly used drainage geosynthetic materials, so that the roadbed humidification problem needs to be further solved.
Disclosure of Invention
The invention aims to provide a roadbed water absorption blanket and a road, and aims to solve the roadbed humidification problem.
In order to achieve the purpose, the invention adopts the technical scheme that: the roadbed water absorption blanket comprises a first water absorption layer, a second water absorption layer and a plurality of water absorption fiber bundles, wherein each water absorption fiber bundle is laid on the surface of the first water absorption layer, the second water absorption layer is connected to the first water absorption layer in a covering mode, each water absorption fiber bundle is located between the first water absorption layer and the second water absorption layer, and the end portion of each water absorption fiber bundle extends out of the first water absorption layer and the second water absorption layer.
Optionally, each of the water-absorbing fiber bundles is uniformly arranged in parallel at intervals.
Optionally, the distance between two adjacent water-absorbing fiber bundles ranges from 5mm to 10 mm.
Optionally, the length of the end portions of the water absorbent fibers extending out of the side portions of the first water absorbent layer ranges from 0.2m to 0.5 m.
Optionally, the water-absorbing fiber bundle is a fiber bundle formed by binding a plurality of filament fibers.
Optionally, the filament fiber is a fiber made from a fiber-forming high polymer polyethylene terephthalate by post-treatment.
Alternatively, the first water-absorbent layer and the second water-absorbent layer each have a porous elastomer layer obtained by crosslinking a water-soluble resin.
Optionally, the thickness range of the first water absorption layer and the thickness range of the second water absorption layer are both 1 mm-2 mm.
Optionally, the second absorbent layer is bonded to a surface of the first absorbent layer.
One or more technical schemes in the roadbed water absorption blanket provided by the invention have at least one of the following technical effects: the roadbed absorbent blanket is suitable for roads, particularly, the roadbed absorbent blanket is laid between a roadbed and the original ground or between the roadbed and a base layer, the end part of the absorbent fiber bundle of the roadbed absorbent blanket is exposed out of the road, namely, the end part of the absorbent fiber bundle is exposed in the air, when the road is used, because the first water absorption layer and the second water absorption layer have water absorption capacity, the water in the roadbed can be absorbed to the periphery of the absorbent fiber bundle, a saturated water subarea is formed on the periphery of the absorbent fiber bundle, the absorbent fiber bundle absorbs the water absorption value in the saturated water subarea to the inside of the absorbent fiber bundle, but because the end part of the absorbent fiber bundle is exposed in the air, the capillary suction force is generated by the evaporation of the water on the end part of the absorbent fiber bundle, and under the action of the capillary suction force, the water can continuously migrate towards the end part of the absorbent fiber bundle along the length direction of the absorbent fiber bundle, and the moisture at the end part of the water absorption fiber bundle is continuously evaporated and discharged, so that the moisture in the roadbed is continuously discharged out of the roadbed, the moisture content in the roadbed is effectively reduced, the problem of roadbed humidification is solved, the service performance of the roadbed is improved, meanwhile, the cyclic stress generated by traffic load in the road in the roadbed enables the moisture in the roadbed water absorption blanket to generate hyperstatic pore water pressure, and the moisture can be accelerated to be discharged outwards along the water absorption fiber bundle.
The invention adopts another technical scheme that: a road comprises a roadbed, a base layer and the roadbed water absorption blanket, wherein the roadbed water absorption blanket is laid on the upper surface of the roadbed, the base layer is laid on the roadbed water absorption blanket, and the roadbed water absorption blanket is positioned between the roadbed and the base layer; or, the roadbed is laid on the roadbed water absorption blanket, the base layer is laid on the roadbed, and the roadbed is located between the roadbed water absorption blanket and the base layer.
According to the road, the roadbed water absorption blanket is adopted, so that after water in a roadbed can be absorbed onto the first water absorption layer and the second water absorption layer, the water on the first water absorption layer and the second water absorption layer extends along the length direction of the water absorption fiber bundles inside the roadbed water absorption blanket, and finally is evaporated and discharged from the end parts of the water absorption fiber bundles exposed in the air, so that the water in the roadbed is effectively discharged, the water content in the roadbed is reduced, the problem of roadbed humidification is solved, the service performance of the roadbed is improved, meanwhile, the cyclic stress generated by traffic load in the road in the roadbed enables the water in the roadbed water absorption blanket to generate hyperstatic pore water pressure, and the water can be accelerated to be discharged outwards along the water absorption fiber bundles.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a roadbed water absorption blanket according to an embodiment of the present invention.
Fig. 2 is a sectional view taken along line a-a in fig. 1.
Fig. 3 is a sectional view taken along line B-B in fig. 1.
Fig. 4 is a cross-sectional view of a roadbed absorbent blanket positioned between the roadbed and the base layer in the road according to another embodiment of the invention.
Fig. 5 is a cross-sectional view of a roadbed absorbent blanket positioned between the roadbed and the original ground in the road according to another embodiment of the invention.
Wherein, in the figures, the respective reference numerals:
10-roadbed water absorption blanket 11-first water absorption layer 12-second water absorption layer
13-water absorption fiber bundle 20-roadbed 30-base layer
40-asphalt layer.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to fig. 1-5 are exemplary and intended to be used for explanation of the invention, and should not be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.
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. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
As shown in fig. 1 to 3, in an embodiment of the present invention, a roadbed absorbent blanket 10 is provided, which includes a first absorbent layer 11, a second absorbent layer 12 and a plurality of absorbent fiber bundles 13, each absorbent fiber bundle 13 is laid on the surface of the first absorbent layer 11, the second absorbent layer 12 is covered and connected on the surface of the first absorbent layer 11, each absorbent fiber bundle 13 is located between the first absorbent layer 11 and the second absorbent layer 12, and an end of each absorbent fiber bundle 13 extends out of the first absorbent layer 11, wherein, referring to fig. 1 and fig. 2, in the process that the second absorbent layer 12 is covered and connected on the surface of the first absorbent layer 11, the absorbent fiber bundles 13 are clamped and fixed between the first absorbent layer 11 and the second absorbent layer 12; the surface shape of the first water absorption layer 11 is completely the same as that of the second water absorption layer 12, and the first water absorption layer 11 and the second water absorption layer 12 are completely overlapped, so that the water absorption fiber bundle 13 is stably fixed between the first water absorption layer 11 and the second water absorption layer 12.
Specifically, the roadbed absorbent blanket 10 embodied by the present invention is applied to a road, and specifically, the roadbed absorbent blanket 10 is laid between a roadbed 20 and the ground or between the roadbed 20 and a base layer 30, and at the same time, the end of the absorbent fiber bundle 13 of the roadbed absorbent blanket 10 is exposed to the outside of the road, that is, the end of the absorbent fiber bundle 13 is exposed to the air, so that when the road is used, because the first water-absorbing layer 11 and the second water-absorbing layer 12 have water-absorbing capacity, the water in the roadbed 20 can be absorbed to the periphery of the absorbent fiber bundle 13, and a saturated water partition is formed around the absorbent fiber bundle 13, and at the same time, the absorbent fiber bundle 13 absorbs the water absorption value in the saturated water partition into the interior of the absorbent fiber bundle 13, but because the end of the absorbent fiber bundle 13 is exposed to the air, the end of the absorbent fiber bundle 13 generates capillary suction by the evaporation of water, and under the action of capillary suction, moisture continuously migrates towards the end part of the water absorption fiber bundle 13 along the length direction of the water absorption fiber bundle 13, and the moisture at the end part of the water absorption fiber bundle 13 is continuously evaporated and discharged, so that the moisture inside the roadbed 20 is continuously discharged out of the roadbed 20, the moisture content in the roadbed 20 is effectively reduced, the problem of wetting the roadbed 20 is solved, meanwhile, the moisture in the roadbed 20 is adsorbed on the roadbed water absorption blanket 10, the moisture content of the moisture inside the road which is evaporated and ascended from the surface of the roadbed can be effectively reduced, and the service performance of the roadbed 20 is improved.
In this embodiment, when the roadbed absorbent blanket 10 is used in a road, the cyclic stress generated in the roadbed 20 by traffic load in the road generates hyperstatic pore water pressure to the water in the roadbed absorbent blanket 10, and accelerates the water to be discharged along the absorbent fiber bundle 13, thereby controlling the water content in the roadbed 20.
In another embodiment of the present invention, as shown in FIG. 1, the absorbent fiber bundles 13 of the roadbed absorbent blanket 10 are provided in a uniformly parallel spaced arrangement. Specifically, the absorbent fiber bundles 13 in the roadbed absorbent blanket 10 are uniformly arranged at intervals, each area on the whole roadbed absorbent blanket 10 has good water absorption performance and drainage performance, and the water absorption performance and drainage performance of the roadbed absorbent blanket 10 have good consistency, so that the roadbed absorbent blanket 10 is applied to a road, the moisture in the whole road can be effectively discharged, and the problem of moisture accumulation is avoided.
In this embodiment, when the roadbed absorbent blanket 10 is laid in a road, the two ends of the absorbent fibers are respectively exposed at the two opposite sides of the road, and each absorbent fiber is arranged along the width direction of the road.
Further, the roadbed absorbent blanket 10 has a thickness range of 2mm to 4mm, a width range of 8m to 10m and a length range of 50m to 100 m. Specifically, the thickness of the roadbed water absorption blanket 10 can be 2mm, 2.5mm, 3mm, 3.5mm or 4mm, and the setting of the thickness range can meet the requirements of road water absorption and drainage, ensure that the water content in the roadbed 20 is in a proper range, reduce the maintenance cost and prolong the service life of the road; the width of the roadbed water absorption blanket 10 can be 8m, 8.5m, 9m, 9.5m or 10m, and the width range can meet the width requirement of most roads; the length of the roadbed absorbent blanket 10 can be 50m, 60m, 70m, 80m, 90m or 100m, and the arrangement of the length range is convenient for the laying of the roadbed absorbent blanket 10, so that the frequent laying of the roadbed absorbent blanket 10 caused by the over-short roadbed absorbent blanket 10 is avoided, the operation is complicated, and the problem that the laying difficulty is large due to the large volume and the heavy mass of the roadbed absorbent blanket 10 caused by the over-long roadbed absorbent blanket 10 can also be avoided.
In another embodiment of the present invention, the distance between two adjacent absorbent fiber bundles 13 of the roadbed absorbent blanket 10 is provided in the range of 5mm to 10 mm. Specifically, the distance between two adjacent water-absorbing fiber bundles 13 may be 5mm, 6mm, 7mm, 8mm, 9mm or 10mm, and the setting of this distance range can ensure that the water-absorbing fiber bundles 13 can absorb the moisture on the first water-absorbing layer 11 and the second water-absorbing layer 12 onto the water-absorbing fiber bundles 13, and finally be discharged by the water-absorbing fiber bundles 13, so as to avoid the occurrence of an area on the first water-absorbing layer 11 and the second water-absorbing layer 12 where the moisture cannot be absorbed onto the water-absorbing fiber bundles 13 due to the excessively large distance between the adjacent water-absorbing fiber bundles 13.
In another embodiment of the present invention, the end portions of the water-absorbent fibers of the roadbed water-absorbent blanket 10 are provided to extend beyond the first water-absorbent layer 11 and the second water-absorbent layer 12 by a length ranging from 0.2m to 0.5 m. Specifically, the length of the end of the water-absorbent fiber bundle 13 extending beyond the first water-absorbent layer 11 and the second water-absorbent layer 12 may be 0.2m, 0.3m, 0.4m, or 0.5m, and the length range is set to ensure that the water in the roadbed 20 can be sufficiently discharged by the water-absorbent fiber bundle 13.
In another embodiment of the present invention, referring to fig. 3, the water-absorbing fiber bundles 13 of the roadbed water-absorbing blanket 10 are provided as fiber bundles formed by binding a plurality of filament fibers. Specifically, the fiber bundle formed by binding a plurality of filament fibers has a large contact area with moisture, so that the water absorption performance and the water drainage performance of the fiber bundle can be greatly improved, and the water absorption performance and the water drainage performance of the roadbed water absorption blanket 10 are also effectively improved; meanwhile, the surfaces of the long and thin fibers in the fiber bundle are provided with a plurality of micropores and surface grooves which are communicated with each other inside and outside, and a plurality of tubular grooves or capillaries which extend along the length direction of the long and thin fibers, so that the moisture in the roadbed 20 can more easily enter the filament fibers, and then the moisture moves to the end part of the fiber bundle along the tubular grooves or capillaries and is evaporated and discharged out of the roadbed 20, thereby greatly improving the drainage efficiency of the roadbed water absorption blanket 10.
In another embodiment of the present invention, the filament fibers that provide the roadbed absorbent blanket 10 are fibers made from post-treatment of fiber-forming high polymer polyethylene terephthalate. Specifically, the fiber made from the fiber-forming high polymer polyethylene terephthalate through post-treatment has good strength, so that the fiber bundle in the roadbed water absorption blanket 10 has good strength and is not easy to break, and the service life and the drainage performance of the fiber bundle can be effectively prolonged.
In another embodiment of the present invention, the first water-absorbing layer 11 and the second water-absorbing layer 12 of the roadbed water-absorbing blanket 10 are provided with porous elastomer layers obtained by a cross-linking reaction of water-soluble resins. Specifically, the first water absorption layer 11 and the second water absorption layer 12 are both made of porous elastomers obtained by cross-linking reaction of water-soluble resins, and the molecular structures of the porous elastomers have hydrophilic bonds and strong water absorption capacity, so that the first water absorption layer 11 and the second water absorption layer 12 have good water absorption performance, and water in the roadbed 20 can be effectively absorbed onto the roadbed water absorption blanket 10 and discharged from the roadbed water absorption blanket 10, and the problem of wetting of the roadbed 20 is effectively solved.
Preferably, the first water absorption layer 11 and the second water absorption layer 12 are both PVA water absorption sponge layers. Specifically, the first water absorption layer 11 and the second water absorption layer 12 are made of PVA water absorption sponge, the PVA water absorption sponge has good water absorption performance, and can effectively absorb water in the roadbed 20, meanwhile, the roadbed 20 and the water absorption fiber bundle 13 are isolated by the PVA water absorption sponge, so that the problem of poor contact between water absorption fibers and water in the roadbed 20 can be solved, a saturated water partition is formed after water absorption in the roadbed 20, the water absorption efficiency of the water absorption fibers is greatly improved, meanwhile, clogging of soil particles in the roadbed 20 on water absorption channels in the water absorption fiber bundle 13 can be effectively prevented, and the water absorption efficiency of the water absorption fiber bundle 13 can be greatly improved.
In another embodiment of the present invention, the first water-absorbing layer 11 and the second water-absorbing layer 12 of the roadbed water-absorbing blanket 10 are provided with a thickness ranging from 1mm to 2 mm; specifically, the thickness of the first water absorption layer 11 can be 1mm, 1.5mm or 2mm, the thickness of the second water absorption layer 12 can be 1mm, 1.5mm or 2mm, and the arrangement of the thickness range can ensure that the moisture in the roadbed 20 can quickly permeate the water absorption fiber bundles 13, so that the moisture in the roadbed 20 can be effectively removed in time, and the problem of moisture accumulation and humidification is avoided.
Further, the roadbed absorbent blanket 10 may also include a first water absorption layer 11 and a second water absorption layer 12 arranged in a multi-layer structure, so as to increase the water absorption capacity of the roadbed absorbent blanket 10, and the specific number of layers may be selected according to actual needs.
In another embodiment of the present invention, the second absorbent layer 12 of the roadbed absorbent blanket 10 is provided to adhere to the surface of the first absorbent layer 11. Specifically, after the water-absorbing fiber bundles 13 are laid on the surface of the first water-absorbing layer 11, the second water-absorbing layer 12 is adhered to the surface of the first water-absorbing layer 11 on which the water-absorbing fiber bundles 13 are laid, the water-absorbing fiber bundles 13 can be stably clamped and fixed between the first water-absorbing layer 11 and the second water-absorbing layer 12, and the water-absorbing fiber bundles 13 can be stably and uniformly bound and fixed between the first water-absorbing layer 11 and the second water-absorbing layer 12, so that the positions of the water-absorbing fiber bundles 13 are relatively fixed during use, and the problem that the water in the roadbed water-absorbing blanket 10 cannot be effectively discharged due to accumulation is avoided; the first water absorption layer 11 and the second water absorption layer 12 are connected by gluing, so that the connection operation is simple, and the roadbed water absorption blanket 10 can be quickly manufactured.
Preferably, the first water absorption layer 11 and the second water absorption layer 12 are connected by epoxy resin, and the connection performance is good.
In another embodiment of the present invention, referring to fig. 4 and 5, a road is provided, which includes a roadbed 20, a base layer 30 and the roadbed absorbent blanket 10, wherein the roadbed absorbent blanket 10 is laid on the upper surface of the roadbed 20, the base layer 30 is laid on the roadbed absorbent blanket 10, and the roadbed absorbent blanket 10 is located between the roadbed 20 and the base layer 30; or, the roadbed 20 is laid on the roadbed water absorption blanket 10, the base layer 30 is laid on the roadbed 20, and the roadbed 20 is positioned between the roadbed water absorption blanket 10 and the base layer 30.
Specifically, according to the road of the embodiment of the present invention, because the roadbed absorbent blanket 10 is adopted, after the roadbed absorbent blanket 10 can absorb moisture in the roadbed 20 onto the first water absorption layer 11 and the second water absorption layer 12, the moisture on the first water absorption layer 11 and the second water absorption layer 12 extends along the length direction of the water absorption fiber bundle 13 inside the roadbed absorbent blanket 10, and finally evaporates and discharges from the end of the water absorption fiber bundle 13 in the exposed air, so as to effectively discharge the moisture in the roadbed 20, reduce the moisture content in the roadbed 20, solve the problem of humidification of the roadbed 20, thereby achieving the effect of improving the service performance of the roadbed 20, and at the same time, the cyclic stress generated in the roadbed 20 by the traffic load in the road can generate hyperstatic pore water pressure in the roadbed absorbent blanket 10, and can accelerate the discharge of the moisture outwards along the water absorption fiber bundle 13.
In this embodiment, the asphalt layer 40 is laid on the surface of the base layer 30 opposite to the roadbed 20, and the asphalt layer 40 can protect the base layer 30.
The following is a detailed description of the road paving process:
as shown in fig. 4, in a specific application, when the roadbed absorbent blanket 10 is laid on the top surface of the roadbed 20, wherein the roadbed 20 is filled with unsaturated clay, the construction method is as follows: after the roadbed 20 is rolled and filled, the roadbed water absorption blanket 10 is laid on the surface of the roadbed 20, the end part of the water absorption fiber bundle 13 is exposed in the atmosphere, the exposed length is more than or equal to 0.5m, then the base layer is laid above the roadbed 20, and finally, the asphalt layer 40 is laid.
As shown in fig. 5, in a specific application, when the roadbed absorbent blanket 10 is laid on the bottom surface of the roadbed 20, the construction method is as follows: the roadbed absorbent blanket 10 is laid on the ground, unsaturated clay is laid on the roadbed absorbent blanket 10, the end part of the absorbent fiber bundle 13 of the roadbed absorbent blanket 10 is exposed to the atmosphere, the exposed length is 0.5m, then the unsaturated clay is rolled to form the roadbed 20, after the rolling is finished, a base layer is laid above the roadbed 20, and finally, an asphalt layer 40 is laid.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A roadbed water absorption blanket is characterized in that: the water absorption fiber bundle water absorption device comprises a first water absorption layer, a second water absorption layer and a plurality of water absorption fiber bundles, wherein each water absorption fiber bundle is laid on the surface of the first water absorption layer, the second water absorption layer is connected to the first water absorption layer in a covering mode, each water absorption fiber bundle is located between the first water absorption layer and the second water absorption layer, and the end portion of each water absorption fiber bundle extends out of the first water absorption layer and the second water absorption layer.
2. The roadbed absorbent blanket of claim 1, wherein: the water absorption fiber bundles are uniformly arranged in parallel at intervals.
3. The roadbed absorbent blanket of claim 2, wherein: the distance between two adjacent water absorption fiber bundles ranges from 5mm to 10 mm.
4. The roadbed absorbent blanket of claim 1, wherein: the length range of the end portions of the water-absorbent fibers extending out of the side portions of the first water-absorbent layer is 0.2m to 0.5 m.
5. The roadbed absorbent blanket of claim 1, wherein: the water-absorbing fiber bundle is formed by binding a plurality of filament fibers.
6. The roadbed absorbent blanket of claim 5, wherein: the filament fiber is made of fiber-forming high polymer polyethylene terephthalate through post treatment.
7. The roadbed water absorption blanket according to any one of claims 1-6, wherein: the first water-absorbing layer and the second water-absorbing layer each have a porous elastomer layer obtained by crosslinking a water-soluble resin.
8. The roadbed water absorption blanket according to any one of claims 1-6, wherein: the thickness range of the first water absorption layer and the thickness range of the second water absorption layer are both 1 mm-2 mm.
9. The roadbed water absorption blanket according to any one of claims 1-6, wherein: the second water absorption layer is adhered to the surface of the first water absorption layer.
10. A roadway, characterized by: the roadbed water absorption blanket comprises a roadbed, a base layer and the roadbed water absorption blanket according to any one of claims 1 to 9, wherein the roadbed water absorption blanket is laid on the upper surface of the roadbed, the base layer is laid on the roadbed water absorption blanket, and the roadbed water absorption blanket is positioned between the roadbed and the base layer;
or, the roadbed is laid on the roadbed water absorption blanket, the base layer is laid on the roadbed, and the roadbed is located between the roadbed water absorption blanket and the base layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911345275.8A CN110904760A (en) | 2019-12-24 | 2019-12-24 | Roadbed water absorption blanket and road |
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| CN114108406A (en) * | 2021-11-26 | 2022-03-01 | 山东大学 | Roadbed humidity control and drainage intelligent device based on modified water-absorbent resin and application method thereof |
| CN114606820A (en) * | 2022-02-17 | 2022-06-10 | 深圳大学 | Soil body reinforcement-active water absorption material and manufacturing device |
| CN114855885A (en) * | 2022-05-26 | 2022-08-05 | 深圳大学 | Ecological vertical slurry impervious wall and construction method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114108406A (en) * | 2021-11-26 | 2022-03-01 | 山东大学 | Roadbed humidity control and drainage intelligent device based on modified water-absorbent resin and application method thereof |
| WO2023093813A1 (en) * | 2021-11-26 | 2023-06-01 | 山东交通学院 | Intelligent subgrade humidity control and drainage device based on modified water-absorbent resin, and usage method therefor |
| CN114606820A (en) * | 2022-02-17 | 2022-06-10 | 深圳大学 | Soil body reinforcement-active water absorption material and manufacturing device |
| WO2023155461A1 (en) * | 2022-02-17 | 2023-08-24 | 深圳大学 | Soil reinforcement-active water-absorbing material and manufacturing device |
| CN114855885A (en) * | 2022-05-26 | 2022-08-05 | 深圳大学 | Ecological vertical slurry impervious wall and construction method thereof |
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