CN114606957A - Railway slope prefabricated assembled post-cast framework slope protection structure and construction method thereof - Google Patents
Railway slope prefabricated assembled post-cast framework slope protection structure and construction method thereof Download PDFInfo
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- 238000010276 construction Methods 0.000 title claims abstract description 23
- 239000004567 concrete Substances 0.000 claims abstract description 61
- 230000007246 mechanism Effects 0.000 claims abstract description 41
- 238000002156 mixing Methods 0.000 claims description 91
- 230000002745 absorbent Effects 0.000 claims description 76
- 239000002250 absorbent Substances 0.000 claims description 76
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 76
- YTZVWGRNMGHDJE-UHFFFAOYSA-N tetralithium;silicate Chemical compound [Li+].[Li+].[Li+].[Li+].[O-][Si]([O-])([O-])[O-] YTZVWGRNMGHDJE-UHFFFAOYSA-N 0.000 claims description 56
- 229910021538 borax Inorganic materials 0.000 claims description 48
- 235000010339 sodium tetraborate Nutrition 0.000 claims description 48
- 239000004328 sodium tetraborate Substances 0.000 claims description 47
- 239000004568 cement Substances 0.000 claims description 44
- 229920001938 Vegetable gum Polymers 0.000 claims description 42
- 238000003756 stirring Methods 0.000 claims description 33
- 238000000034 method Methods 0.000 claims description 13
- 239000000843 powder Substances 0.000 claims description 11
- -1 isopropanol amide Chemical class 0.000 claims description 7
- 238000009417 prefabrication Methods 0.000 claims description 7
- 239000002994 raw material Substances 0.000 claims description 5
- KFZMGEQAYNKOFK-UHFFFAOYSA-N isopropyl alcohol Natural products CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 4
- 239000000654 additive Substances 0.000 claims description 2
- 230000000996 additive effect Effects 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 239000003638 chemical reducing agent Substances 0.000 description 35
- 239000010881 fly ash Substances 0.000 description 35
- 239000002893 slag Substances 0.000 description 35
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 16
- ZNOZWUKQPJXOIG-XSBHQQIPSA-L [(2r,3s,4r,5r,6s)-6-[[(1r,3s,4r,5r,8s)-3,4-dihydroxy-2,6-dioxabicyclo[3.2.1]octan-8-yl]oxy]-4-[[(1r,3r,4r,5r,8s)-8-[(2s,3r,4r,5r,6r)-3,4-dihydroxy-6-(hydroxymethyl)-5-sulfonatooxyoxan-2-yl]oxy-4-hydroxy-2,6-dioxabicyclo[3.2.1]octan-3-yl]oxy]-5-hydroxy-2-( Chemical compound O[C@@H]1[C@@H](O)[C@@H](OS([O-])(=O)=O)[C@@H](CO)O[C@H]1O[C@@H]1[C@@H]2OC[C@H]1O[C@H](O[C@H]1[C@H]([C@@H](CO)O[C@@H](O[C@@H]3[C@@H]4OC[C@H]3O[C@H](O)[C@@H]4O)[C@@H]1O)OS([O-])(=O)=O)[C@@H]2O ZNOZWUKQPJXOIG-XSBHQQIPSA-L 0.000 description 13
- 230000000052 comparative effect Effects 0.000 description 9
- 239000001569 carbon dioxide Substances 0.000 description 8
- 229910002092 carbon dioxide Inorganic materials 0.000 description 8
- 239000000499 gel Substances 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 238000006703 hydration reaction Methods 0.000 description 5
- 239000010426 asphalt Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 210000000481 breast Anatomy 0.000 description 3
- 230000003628 erosive effect Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 239000011178 precast concrete Substances 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 2
- 229910001424 calcium ion Inorganic materials 0.000 description 2
- 238000003763 carbonization Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009415 formwork Methods 0.000 description 2
- 230000036571 hydration Effects 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 239000011398 Portland cement Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000004162 soil erosion Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- VLCLHFYFMCKBRP-UHFFFAOYSA-N tricalcium;diborate Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]B([O-])[O-].[O-]B([O-])[O-] VLCLHFYFMCKBRP-UHFFFAOYSA-N 0.000 description 1
- BSVBQGMMJUBVOD-UHFFFAOYSA-N trisodium borate Chemical compound [Na+].[Na+].[Na+].[O-]B([O-])[O-] BSVBQGMMJUBVOD-UHFFFAOYSA-N 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
- E02D17/205—Securing of slopes or inclines with modular blocks, e.g. pre-fabricated
-
- 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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/24—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing alkyl, ammonium or metal silicates; containing silica sols
- C04B28/26—Silicates of the alkali metals
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Structural Engineering (AREA)
- Ceramic Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
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Abstract
The application relates to a prefabricated post-cast skeleton slope protection structure of assembling of railway side slope and construction method thereof, belongs to the field of railway side slope engineering protection, and it includes the base of fixed connection in the side slope bottom, the slope surface upper berth of side slope is equipped with the prefabricated slope protection mechanism of multiunit, prefabricated slope protection mechanism forms for the concrete is prefabricated, prefabricated slope protection mechanism lower extreme and base butt. This application has the effect that reduces the construction degree of difficulty, improves railway side slope protection structure efficiency of construction.
Description
Technical Field
The application relates to the field of railway slope engineering protection, in particular to a railway slope prefabricated assembled post-cast skeleton slope protection structure and a construction method thereof.
Background
The railway slope engineering protection refers to a protection measure on the slope in order to keep the slope stable in a section with less ideal geological conditions. The major railway protection measures are such measures as three-layer soil plastering, concrete spraying, net hanging, anchor spraying and retaining wall.
The railway slope protection construction process in the related technology mainly comprises the following steps: the method comprises the steps of slotting on the slope surface of the side slope of the railway roadbed, placing a steel formwork, pouring concrete to form a framework, reserving and setting steps, dismantling the steel formwork after maintenance is completed, and finally forming the slope protection structure.
With respect to the above-described related art, the inventors consider that: the cast-in-place concrete slope protection structure is complex in construction operation, and is inclined due to the slope of the side slope, so that the construction difficulty is increased.
Disclosure of Invention
In order to reduce the construction difficulty and improve the construction efficiency of the railway slope protection structure, the application provides a railway slope prefabricated assembled post-cast skeleton protection structure and a construction method thereof.
First aspect, the application provides a formula skeleton slope protection structure waters after prefabrication is assembled to railway side slope adopts following technical scheme:
the utility model provides a formula skeleton slope protection structure is watered after prefabricating is assembled to railway side slope, includes the base of fixed connection in the side slope bottom, the domatic upper berth of side slope is equipped with the prefabricated bank protection mechanism of multiunit, prefabricated bank protection mechanism forms for the concrete is prefabricated, prefabricated bank protection mechanism lower extreme and base butt.
Through adopting above-mentioned technical scheme, pour the base bottom the side slope, then lay prefabricated slope protection mechanism that forms on the slope surface of side slope, the base plays the supporting role to prefabricated slope protection mechanism to accomplish slope protection structure's installation, effectively reduce the construction degree of difficulty, improve railway side slope protection structure efficiency of construction.
Optionally, the prefabricated bank protection mechanism of multiunit sets up along side slope length direction interval in proper order, and adjacent two sets of prefabricated bank protection mechanisms directly are provided with the step, step and prefabricated bank protection mechanism butt.
Through adopting above-mentioned technical scheme, set up the step and separate adjacent two sets of prefabricated slope protection mechanisms to the maintenance is overhauld to prefabricated slope protection mechanism to the convenience.
Optionally, prefabricated slope protection mechanism includes polylith and the domatic parallel arrangement's of side slope fender, polylith fender slope length direction sets gradually, two adjacent blocks of fender slopes butt.
Through adopting above-mentioned technical scheme, disassemble prefabricated slope protection mechanism into polylith slope protection board to conveniently transport.
Optionally, a fixing groove is formed in the slope protection plate, a protrusion is arranged on a slope surface of the slope within the range of the fixing groove, a plant layer is laid on the slope surface of the slope, and the plant layer is located at the protrusion.
Through adopting above-mentioned technical scheme, the slope protection plate passes through the fixed slot and the protruding department installs on the slope surface of side slope, and the plant layer can effectively reduce the soil erosion and water loss of protruding department.
Optionally, the prefabricated slope protection mechanism is formed by pouring concrete, and the concrete comprises the following raw materials in parts by weight: 1000-1300 parts of coarse aggregate, 550-750 parts of fine aggregate, 240-320 parts of cement, 120-180 parts of water, 75-95 parts of absorbent, 80-160 parts of admixture and 5-9 parts of additive, wherein the absorbent comprises hydrated vegetable gum, borax and lithium orthosilicate, and the weight ratio of the hydrated vegetable gum to the borax is 9-11: 6: 1-2.
By adopting the technical scheme, lithium orthosilicate and borax are mixed into the hydrated vegetable gum, the borax can effectively improve the gel performance of the hydrated vegetable gum, so that the protective performance of the hydrated vegetable gum on lithium orthosilicate is improved, meanwhile, the compressive strength of the hydrated vegetable gum gel is improved by adding the lithium orthosilicate, in the cement hydration process, the hydrated vegetable gum gel is solidified to bond the lithium orthosilicate with other raw materials, free hydroxide ions are consumed after the borax is combined with water, calcium borate precipitates are generated by combining calcium ions, when a precast member made of concrete is corroded by carbon dioxide, calcium carbonate is reduced because the calcium ions are reduced and the lithium orthosilicate adsorbs the carbon dioxide, and the precast concrete precast member is cracked.
Optionally, the concrete further comprises 32-48 parts of a toughening component.
By adopting the technical scheme, the toughening component improves the toughness of the hydrated vegetable gelatin, thereby protecting the lithium orthosilicate and reducing the loss of the lithium orthosilicate in the hydration process.
Optionally, the toughening component comprises isopropanolamide and rubber powder, and the weight ratio of the isopropanolamide to the rubber powder is 3: 5.
By adopting the technical scheme, in the hydration reaction process, the concrete is in an alkaline environment, and the isopropanol amide improves the bonding strength between the rubber powder and the hydrated vegetable gelatin, so that the toughness of the hydrated vegetable gelatin is improved.
Optionally, the preparation method of the concrete comprises the following steps: s1, mixing the hydrated vegetable gum, the borax and the lithium orthosilicate to prepare an absorbent, and mixing the toughening component with the absorbent; s2, mixing the coarse aggregate, the fine aggregate, the cement, the admixture and the water, then adding the absorbent mixed with the toughening component, and mixing and stirring uniformly to obtain the concrete.
By adopting the technical scheme, the absorbent mixed with the toughening component is prepared and then mixed with other raw materials to prepare the concrete, and the operation is simple.
In a second aspect, the application provides a construction method of a railway slope prefabricated assembled post-cast skeleton slope protection structure, which adopts the following technical scheme:
a construction method of a railway side slope prefabricated assembled post-cast skeleton slope protection structure comprises the following steps: s1, leveling the slope surface of the side slope; s2, correspondingly prefabricating a groove of the slope protection mechanism on the slope surface of the side slope; s3, pouring a base at the bottom of the side slope; s4, paving the prefabricated slope protection mechanism on the slope surface of the side slope, wherein the lower end of the prefabricated slope protection mechanism is abutted against the base; s5, fixing the prefabricated slope protection mechanism.
Through adopting above-mentioned technical scheme, lay prefabricated bank protection mechanism on the slope surface of side slope, the base supports it to effectively reduce the construction degree of difficulty, improve the efficiency of construction.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the base is made in a cast-in-place mode, the slope protection plate and the steps are prefabricated, and the slope protection plate and the steps are laid on the slope surface of the side slope during laying, so that construction can be completed, the construction difficulty is effectively reduced, and the construction efficiency is improved;
2. the borax and the lithium orthosilicate enhance the performance of the hydrated vegetable gum gel, the hydrated vegetable gum gel lithium orthosilicate and unreacted borax are protected, the loss in the stirring process is reduced, the hydrated vegetable gum gel is solidified in the cement hydration reaction process, the borax reduces the influence of hydroxide ions on the lithium orthosilicate, and the loss of the lithium orthosilicate, so that the lithium orthosilicate is reserved for absorbing carbon dioxide, and the damage of carbon dioxide erosion to a concrete prefabricated part is reduced;
3. during the stirring process, the crushed volume of the hydrated vegetable gelatin is reduced and the hydrated vegetable gelatin is uniformly dispersed in the concrete, and the isopropanolamide and the rubber powder are used as toughening components to ensure that the hydrated vegetable gelatin can still protect the lithium orthosilicate.
Drawings
FIG. 1 is a schematic view of the overall structure of embodiment 1 of the present application;
FIG. 2 is a partial structural schematic diagram of embodiment 1 of the present application;
FIG. 3 is a partial structural schematic diagram of embodiment 1 of the present application;
description of reference numerals: 1. side slope; 11. a first placing groove; 12. a second placing groove; 13. burying a groove; 2. a base; 21. positioning a groove; 3. prefabricating a slope protection mechanism; 31. a slope protection plate; 311. fixing grooves; 32. a protective strip; 4. a step; 5. a drainage channel; 6. and (5) a plant layer.
Detailed Description
In the application, the coarse aggregate is prepared from broken stone, the fine aggregate is portland cement grade P.I 62.5, the fly ash is grade I fly ash of 325 meshes, the slag is grade S95 slag micropowder, the water reducing agent is a polycarboxylic acid water reducing agent, the hydrated plant gum is a polyvinyl alcohol aqueous solution dissolved in water after being heated, the mass fraction is 8%, borax is purchased from sodium borate on the market, lithium orthosilicate with the purity of 99% is purchased from Yongkui technology Co., Ltd in Hubei, isopropanolamide is purchased from the market, and rubber powder with the size of 80 meshes is purchased from the market.
The present application is described in further detail below with reference to figures 1-3.
Example 1
The embodiment 1 of the application discloses a formula skeleton slope protection structure is watered after prefabricating assembling of railway side slope. Referring to fig. 1, 1 prefabricated post-cast skeleton slope protection structure of assembling of railway side slope is including pouring base 2 in 1 bottom of side slope, and 1 domatic upper berth of side slope is equipped with prefabricated slope protection mechanism of multiunit 3, has laid step 4 between adjacent two sets of prefabricated slope protection mechanism 3, step 4 and 3 butts of adjacent prefabricated slope protection mechanism, 3 lower extremes of prefabricated slope protection mechanism and 2 upper surface butts of base.
Referring to fig. 1, the base 2 is shaped as a horizontally arranged cuboid, the length direction of the base 2 is parallel to the length direction of the side slope 1, the base 2 is formed by casting concrete in situ, a drainage channel 5 is horizontally cast on one side of the base 2, which is far away from the side slope 1, and the length direction of the drainage channel 5 is parallel to the length direction of the base 2. The bottom of the side slope 1 is provided with an embedding groove 13 corresponding to the base 2 and the drainage channel 5, and the lower end of the base 2 and the lower end of the drainage channel 5 are embedded in the embedding groove 13. Firstly, excavating an embedding groove 13 at the bottom of the side slope 1, laying a steel template, pouring the base 2 and the drainage channel 5, and finally forming after maintenance.
Referring to fig. 2 and 3, a first placing groove 11 is formed in the slope surface of the side slope 1 along the width direction of the slope surface, the step 4 is a precast concrete member, and the step 4 is buried in the first placing groove 11 towards the slope surface side.
Referring to fig. 2 and 3, prefabricated slope protection mechanism 3 includes the polylith breast board 31 that the multiunit set up along 1 length direction of side slope, and breast board 31 is domatic with side slope 1, and breast board 31 is precast concrete board. The upper surface of the base 2 is provided with a positioning groove 21, the lower end of the slope protection plate 31 is clamped in the positioning groove 21, and the lower end of the step 4 is clamped in the positioning groove 21. In this embodiment, each set of prefabricated slope protection mechanisms 3 includes three slope protection plates 31, and two adjacent slope protection plates 31 abut against each other. Two adjacent slope protection plates 31 are bonded through asphalt cement, and the step 4 and the adjacent slope protection plates 31 are also bonded through asphalt cement. Two arch fixed slots 311 have been seted up along domatic width direction on the slope protection board 31, and slope 1 is domatic to go up to correspond fixed slot 311 and is provided with the bellying, and the bellying lateral wall is with fixed slot 311 inner wall butt. The slope 1 is domatic to be gone up and to have seted up second standing groove 12 corresponding slope protection board 31, and slope protection board 31 places in second standing groove 12. The slope protection plate 31 is integrally cast with an arch protection strip 32 in a shape corresponding to the fixing groove 311 on the side deviating from the slope surface.
Referring to fig. 1, a plant layer 6 for reducing water and soil loss is planted on the slope surface in the fixing groove 311.
The application embodiment 1 a railway side slope is prefabricated assembles post-cast skeleton slope protection structure's implementation principle does: first standing groove 11 and second standing groove 12 are seted up earlier on domatic, reserve protruding department in the second standing groove 12. The base 2 and the drainage channel 5 are cast in situ on site, then the slope protection plate 31 and the step 4 are laid, the slope protection plate 31 and the step 4 are bonded through asphalt cement, the plant layer 6 is planted at the protruding part, and slope protection laying is completed.
Example 2
The embodiment of the application discloses 2 a construction method of a railway side slope prefabricated assembled post-cast skeleton slope protection structure, which comprises the following steps:
s1, leveling and compacting the slope surface of the side slope;
s2, arranging a first placing groove 11 and a second placing groove 12 on the slope surface of the side slope corresponding to the steps 4 and the prefabricated slope protection mechanism 3;
s3, pouring the base 2 and the drainage channel 5 at the bottom of the side slope;
s4, placing the step 4 in the first placing groove 11, placing the slope protection plate 31 in the second placing groove 12, placing the lower end of the slope protection plate 31 and the lower end of the step 4 in the positioning groove 21, bonding the slope protection plate 31 and the step 4 by asphalt cement, and filling and tightly extruding soil in the gap between the slope protection plate 31 and the side wall of the second placing groove 12, the gap between the bulge part and the side wall of the fixing groove 311 and the gap between the step 4 and the side wall of the second placing groove 12;
s5, pouring concrete into the positioning groove 21 to connect the slope protection plate 31, the step 4 and the base 2 into a whole, so that the slope protection plate 31 and the step 4 are fixed.
Example 3
S1, mixing 45kg of hydrated vegetable gum, 10kg of borax and 20kg of lithium orthosilicate to prepare an absorbent; s2, mixing 1000kg of coarse aggregate, 550kg of fine aggregate, 230kg of cement, 54kg of fly ash, 36kg of slag, 5kg of water reducing agent and 120kg of water, then adding the absorbent prepared in the S1, and uniformly mixing and stirring to obtain the concrete.
Example 4
S1, mixing 50kg of hydrated vegetable gum, 10kg of borax and 25kg of lithium orthosilicate to prepare an absorbent; s2, mixing 1000kg of coarse aggregate, 650kg of fine aggregate, 280kg of cement, 72kg of fly ash, 48kg of slag, 7kg of water reducing agent and 150kg of water, then adding the absorbent prepared in the S1, and uniformly mixing and stirring to obtain the concrete.
Example 5
S1, mixing 50kg of hydrated vegetable gum, 10kg of borax and 25kg of lithium orthosilicate to prepare an absorbent; s2, mixing 1150kg of coarse aggregate, 650kg of fine aggregate, 280kg of cement, 72kg of fly ash, 48kg of slag, 7kg of water reducing agent and 150kg of water, adding the absorbent prepared in the S1, and uniformly mixing and stirring to obtain the concrete.
Example 6
S1, mixing 50kg of hydrated vegetable gum, 10kg of borax and 25kg of lithium orthosilicate to prepare an absorbent; s2, 1300kg of coarse aggregate, 650kg of fine aggregate, 280kg of cement, 72kg of fly ash, 48kg of slag, 7kg of water reducing agent and 150kg of water are mixed, then the absorbent prepared in the S1 is added, and the mixture is uniformly mixed and stirred to prepare the concrete.
Example 7
S1, mixing 50kg of hydrated vegetable gum, 10kg of borax and 25kg of lithium orthosilicate to prepare an absorbent; s2, mixing 1150kg of coarse aggregate, 550kg of fine aggregate, 280kg of cement, 72kg of fly ash, 48kg of slag, 7kg of water reducing agent and 150kg of water, then adding the absorbent prepared in the S1, and uniformly mixing and stirring to obtain the concrete.
Example 8
S1, mixing 50kg of hydrated vegetable gum, 10kg of borax and 25kg of lithium orthosilicate to prepare an absorbent; s2, mixing 1150kg of coarse aggregate, 750kg of fine aggregate, 280kg of cement, 72kg of fly ash, 48kg of slag, 7kg of water reducing agent and 150kg of water, then adding the absorbent prepared in the S1, and uniformly mixing and stirring to obtain the concrete.
Example 9
S1, mixing 50kg of hydrated vegetable gum, 10kg of borax and 25kg of lithium orthosilicate to prepare an absorbent; s2, mixing 1150kg of coarse aggregate, 650kg of fine aggregate, 230kg of cement, 72kg of fly ash, 48kg of slag, 7kg of water reducing agent and 150kg of water, adding the absorbent prepared in the S1, and uniformly mixing and stirring to obtain the concrete.
Example 10
S1, mixing 50kg of hydrated vegetable gum, 10kg of borax and 25kg of lithium orthosilicate to prepare an absorbent; s2, mixing 1150kg of coarse aggregate, 650kg of fine aggregate, 330kg of cement, 72kg of fly ash, 48kg of slag, 7kg of water reducing agent and 150kg of water, adding the absorbent prepared in the S1, and uniformly mixing and stirring to obtain the concrete.
Example 11
S1, mixing 50kg of hydrated vegetable gum, 10kg of borax and 25kg of lithium orthosilicate to prepare an absorbent; s2, mixing 1150kg of coarse aggregate, 650kg of fine aggregate, 280kg of cement, 72kg of fly ash, 48kg of slag, 7kg of water reducing agent and 120kg of water, adding the absorbent prepared in the S1, and uniformly mixing and stirring to obtain the concrete.
Example 12
S1, mixing 50kg of hydrated vegetable gum, 10kg of borax and 25kg of lithium orthosilicate to prepare an absorbent; s2, mixing 1150kg of coarse aggregate, 650kg of fine aggregate, 280kg of cement, 72kg of fly ash, 48kg of slag, 7kg of water reducing agent and 180kg of water, adding the absorbent prepared in the S1, and uniformly mixing and stirring to obtain the concrete.
Example 13
S1, mixing 45kg of hydrated vegetable gum, 10kg of borax and 20kg of lithium orthosilicate to prepare an absorbent; s2, mixing 1150kg of coarse aggregate, 650kg of fine aggregate, 280kg of cement, 72kg of fly ash, 48kg of slag, 7kg of water reducing agent and 150kg of water, adding the absorbent prepared in the S1, and uniformly mixing and stirring to obtain the concrete.
Example 14
S1, mixing 50kg of hydrated vegetable gum, 10kg of borax and 20kg of lithium orthosilicate to prepare an absorbent; s2, mixing 1150kg of coarse aggregate, 650kg of fine aggregate, 280kg of cement, 72kg of fly ash, 48kg of slag, 7kg of water reducing agent and 150kg of water, adding the absorbent prepared in the S1, and uniformly mixing and stirring to obtain the concrete.
Example 15
S1, mixing 55kg of hydrated vegetable gum, 10kg of borax and 20kg of lithium orthosilicate to prepare an absorbent; s2, mixing 1150kg of coarse aggregate, 650kg of fine aggregate, 280kg of cement, 72kg of fly ash, 48kg of slag, 7kg of water reducing agent and 150kg of water, adding the absorbent prepared in the S1, and uniformly mixing and stirring to obtain the concrete.
Example 16
S1, mixing 45kg of hydrated vegetable gum, 10kg of borax and 25kg of lithium orthosilicate to prepare an absorbent; s2, mixing 1150kg of coarse aggregate, 650kg of fine aggregate, 280kg of cement, 72kg of fly ash, 48kg of slag, 7kg of water reducing agent and 150kg of water, then adding the absorbent prepared in the S1, and mixing and stirring uniformly to obtain the concrete.
Example 17
S1, mixing 55kg of hydrated vegetable gum, 10kg of borax and 25kg of lithium orthosilicate to prepare an absorbent; s2, mixing 1150kg of coarse aggregate, 650kg of fine aggregate, 280kg of cement, 72kg of fly ash, 48kg of slag, 7kg of water reducing agent and 150kg of water, adding the absorbent prepared in the S1, and uniformly mixing and stirring to obtain the concrete.
Example 18
S1, mixing 45kg of hydrated vegetable gum, 10kg of borax and 30kg of lithium orthosilicate to prepare an absorbent; s2, mixing 1150kg of coarse aggregate, 650kg of fine aggregate, 280kg of cement, 72kg of fly ash, 48kg of slag, 7kg of water reducing agent and 150kg of water, adding the absorbent prepared in the S1, and uniformly mixing and stirring to obtain the concrete.
Example 19
S1, mixing 50kg of hydrated vegetable gum, 10kg of borax and 30kg of lithium orthosilicate to prepare an absorbent; s2, mixing 1150kg of coarse aggregate, 650kg of fine aggregate, 280kg of cement, 72kg of fly ash, 48kg of slag, 7kg of water reducing agent and 150kg of water, adding the absorbent prepared in the S1, and uniformly mixing and stirring to obtain the concrete.
Example 20
S1, mixing 55kg of hydrated vegetable gum, 10kg of borax and 30kg of lithium orthosilicate to prepare an absorbent; s2, mixing 1150kg of coarse aggregate, 650kg of fine aggregate, 280kg of cement, 72kg of fly ash, 48kg of slag, 7kg of water reducing agent and 150kg of water, adding the absorbent prepared in the S1, and uniformly mixing and stirring to obtain the concrete.
Example 21
S1, mixing 50kg of hydrated vegetable gum, 10kg of borax and 25kg of lithium orthosilicate to prepare an absorbent; s2, mixing 1150kg of coarse aggregate, 650kg of fine aggregate, 280kg of cement, 54kg of fly ash, 36kg of slag, 7kg of water reducing agent and 150kg of water, adding the absorbent prepared in the S1, and uniformly mixing and stirring to obtain the concrete.
Example 22
S1, mixing 50kg of hydrated vegetable gum, 10kg of borax and 25kg of lithium orthosilicate to prepare an absorbent; s2, mixing 1150kg of coarse aggregate, 650kg of fine aggregate, 280kg of cement, 90kg of fly ash, 60kg of slag, 7kg of water reducing agent and 150kg of water, adding the absorbent prepared in the S1, and uniformly mixing and stirring to obtain the concrete.
Example 23
S1, mixing 50kg of hydrated vegetable gum, 10kg of borax and 25kg of lithium orthosilicate to prepare an absorbent; s2, mixing 1150kg of coarse aggregate, 650kg of fine aggregate, 280kg of cement, 72kg of fly ash, 48kg of slag, 5kg of water reducing agent and 150kg of water, adding the absorbent prepared in the S1, and uniformly mixing and stirring to obtain the concrete.
Example 24
S1, mixing 50kg of hydrated vegetable gum, 10kg of borax and 25kg of lithium orthosilicate to prepare an absorbent; s2, mixing 1150kg of coarse aggregate, 650kg of fine aggregate, 280kg of cement, 72kg of fly ash, 48kg of slag, 9kg of water reducing agent and 150kg of water, adding the absorbent prepared in the S1, and uniformly mixing and stirring to obtain the concrete.
Example 25
S1, mixing 50kg of hydrated vegetable gum, 10kg of borax and 25kg of lithium orthosilicate to prepare an absorbent, and then adding 12kg of isopropanolamide and 20kg of rubber powder to prepare the absorbent mixed with the toughening component; s2, mixing 1150kg of coarse aggregate, 650kg of fine aggregate, 150kg of cement, 72kg of fly ash, 48kg of slag, 7kg of water reducing agent and 150kg of water, then adding the absorbent mixed with the toughening component prepared in the S1, and mixing and stirring uniformly to obtain the concrete.
Example 26
S1, mixing 50kg of hydrated vegetable gum, 10kg of borax and 25kg of lithium orthosilicate to prepare an absorbent, and then adding 15kg of isopropanolamide and 25kg of rubber powder to obtain the absorbent mixed with the toughening component; s2, mixing 1150kg of coarse aggregate, 650kg of fine aggregate, 150kg of cement, 72kg of fly ash, 48kg of slag, 7kg of water reducing agent and 150kg of water, then adding the absorbent mixed with the toughening component prepared in the S1, and mixing and stirring uniformly to obtain the concrete.
Example 27
S1, mixing 50kg of hydrated vegetable gum, 10kg of borax and 25kg of lithium orthosilicate to prepare an absorbent, and then adding 18kg of isopropanolamide and 30kg of rubber powder to mix to prepare the absorbent mixed with the toughening component; s2, mixing 1150kg of coarse aggregate, 650kg of fine aggregate, 150kg of cement, 72kg of fly ash, 48kg of slag, 7kg of water reducing agent and 150kg of water, then adding the absorbent mixed with the toughening component prepared in the S1, and mixing and stirring uniformly to obtain the concrete.
Example 28
S1, mixing 55kg of hydrated vegetable gum, 10kg of borax and 30kg of lithium orthosilicate to prepare an absorbent; s2, 1300kg of coarse aggregate, 750kg of fine aggregate, 330kg of cement, 90kg of fly ash, 60kg of slag, 9kg of water reducing agent and 180kg of water are mixed, then the absorbent prepared in the S1 is added, and the mixture is uniformly mixed and stirred to prepare the concrete.
Comparative example 1
S1, mixing 50kg of hydrated plant gum and 10kg of borax to prepare an absorbent; s2, mixing 1150kg of coarse aggregate, 650kg of fine aggregate, 280kg of cement, 72kg of fly ash, 48kg of slag, 7kg of water reducing agent and 150kg of water, adding the absorbent prepared in the S1, and uniformly mixing and stirring to obtain the concrete.
Comparative example 2
S1, mixing 50kg of hydrated plant gum and 25kg of lithium orthosilicate to prepare an absorbent; s2, mixing 1150kg of coarse aggregate, 650kg of fine aggregate, 280kg of cement, 72kg of fly ash, 48kg of slag, 7kg of water reducing agent and 150kg of water, adding the absorbent prepared in the S1, and uniformly mixing and stirring to obtain the concrete.
Comparative example 3
S1, mixing 10kg of borax and 25kg of lithium orthosilicate to prepare an absorbent; s2, mixing 1150kg of coarse aggregate, 650kg of fine aggregate, 280kg of cement, 72kg of fly ash, 48kg of slag, 7kg of water reducing agent and 150kg of water, adding the absorbent prepared in the S1, and uniformly mixing and stirring to obtain the concrete.
Comparative example 4
1150kg of coarse aggregate, 650kg of fine aggregate, 280kg of cement, 72kg of fly ash, 48kg of slag, 7kg of water reducing agent, 50kg of hydrated vegetable gum and 150kg of water are mixed, then the absorbent prepared in S1 is added, and the mixture is mixed and stirred uniformly to prepare the concrete.
Comparative example 5
1150kg of coarse aggregate, 650kg of fine aggregate, 280kg of cement, 72kg of fly ash, 48kg of slag, 7kg of water reducing agent, 10kg of borax and 150kg of water are mixed, then the absorbent prepared in S1 is added, and the mixture is uniformly mixed and stirred to prepare the concrete.
Comparative example 6
1150kg of coarse aggregate, 650kg of fine aggregate, 280kg of cement, 72kg of fly ash, 48kg of slag, 7kg of water reducing agent, 25kg of lithium orthosilicate and 150kg of water are mixed, then the absorbent prepared in S1 is added, and the mixture is mixed and stirred uniformly to prepare the concrete.
Comparative example 7
1150kg of coarse aggregate, 650kg of fine aggregate, 280kg of cement, 72kg of fly ash, 48kg of slag, 7kg of water reducing agent and 150kg of water are mixed, then the absorbent prepared in S1 is added, and the mixture is mixed and stirred uniformly to prepare the concrete.
TABLE 1 EXAMPLES 3 TO 28 AND COMPARATIVE EXAMPLES 1 TO 7 raw material tables (kg)
Performance detection
And testing the 28d carbonization depth according to GB/T50082-2009 Endurance performance test method Standard for ordinary concrete Long-term Performance 11 carbonization test.
Table 2 table of performance testing data
It can be seen from the combination of example 5 and comparative examples 1 to 7 and from table 2 that the simultaneous addition of borax, lithium orthosilicate and hydrated vegetable gum can effectively improve the carbon dioxide erosion resistance of concrete, the reasons are: the borax and the lithium orthosilicate enhance the performance of the hydrated vegetable gelatin, the hydrated vegetable gelatin lithium orthosilicate and unreacted borax protect the hydrated vegetable gelatin lithium orthosilicate and unreacted borax, the loss in the stirring process is reduced, the hydrated vegetable gelatin is solidified in the cement hydration reaction process, the influence of hydroxide ions on the lithium orthosilicate is reduced by the borax, the loss of the lithium orthosilicate is reduced, the lithium orthosilicate is reserved for carbon dioxide absorption, and the damage of carbon dioxide erosion to the concrete prefabricated part is reduced
As can be seen by combining example 5 with examples 13-20 and by combining table 2,
combining example 5 and examples 25-27 with table 2, it can be seen that the resistance of concrete to attack by carbon dioxide is further improved, because: during the stirring process, the crushed volume of the hydrated vegetable gelatin is reduced and the hydrated vegetable gelatin is uniformly dispersed in the concrete, and the isopropanol amide and the rubber powder are used as toughening components to ensure that the hydrated vegetable gelatin can still protect the lithium orthosilicate, thereby reducing the loss of the lithium orthosilicate.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (9)
1. The utility model provides a railway side slope is prefabricated assembles post-cast skeleton slope protection structure which characterized in that: including base (2) of fixed connection in side slope (1) bottom, the domatic upper berth of side slope (1) is equipped with prefabricated bank protection mechanism of multiunit (3), prefabricated bank protection mechanism (3) form for the concrete is prefabricated, prefabricated bank protection mechanism (3) lower extreme and base (2) butt.
2. The railway slope prefabrication and assembly post-cast skeleton slope protection structure according to claim 1, characterized in that: prefabricated bank protection mechanism of multiunit (3) sets up along side slope (1) length direction interval in proper order, and adjacent two sets of prefabricated bank protection mechanism (3) directly are provided with step (4), step (4) and prefabricated bank protection mechanism (3) butt.
3. The railway slope prefabrication and assembly post-cast skeleton slope protection structure according to claim 1, characterized in that: prefabricated slope protection mechanism (3) include polylith and slope surface parallel arrangement's of side slope (1) slope protection board (31), polylith protection board (31) set gradually along side slope (1) length direction, two piece adjacent protection board (31) butt.
4. The railway slope prefabrication and assembly post-cast skeleton slope protection structure according to claim 3, characterized in that: the slope protection plate (31) is provided with a fixing groove (311), a bulge is arranged on the slope surface of the side slope (1) within the range of the fixing groove (311), a plant layer (6) is paved on the slope surface of the side slope (1), and the plant layer (6) is arranged at the bulge.
5. The railway slope prefabricated assembled post-cast skeleton slope protection structure according to claim 3, characterized in that: the prefabricated slope protection mechanism is formed by pouring concrete, and the concrete comprises the following raw materials in parts by weight: 1000-1300 parts of coarse aggregate, 550-750 parts of fine aggregate, 240-320 parts of cement, 120-180 parts of water, 75-95 parts of absorbent, 80-160 parts of admixture and 5-9 parts of additive, wherein the absorbent comprises hydrated vegetable gum, borax and lithium orthosilicate, and the weight ratio of the hydrated vegetable gum to the borax is 9-11: 6: 1-2.
6. The railway slope prefabrication and assembly post-cast skeleton slope protection structure according to claim 5, characterized in that: the concrete also comprises 32-48 parts of a toughening component.
7. The railway slope prefabrication and assembly post-cast skeleton slope protection structure according to claim 6, characterized in that: the toughening component comprises isopropanol amide and rubber powder, wherein the weight ratio of the isopropanol amide to the rubber powder is 3: 5.
8. The railway slope prefabrication and assembly post-cast skeleton slope protection structure according to claim 6, characterized in that: the preparation method of the concrete comprises the following steps: s1, mixing the hydrated vegetable gum, the borax and the lithium orthosilicate to prepare an absorbent, and mixing the toughening component with the absorbent; s2, mixing the coarse aggregate, the fine aggregate, the cement, the admixture and the water, then adding the absorbent mixed with the toughening component, and uniformly mixing and stirring to obtain the concrete.
9. The construction method of the railway side slope prefabricated assembled post-cast skeleton slope protection structure as claimed in any one of claims 1 to 8, characterized in that: the method comprises the following steps: s1, leveling the slope surface of the side slope (1); s2, correspondingly prefabricating grooves on the slope surface of the side slope (1) by the slope protection mechanism (3); s3, pouring a base (2) at the bottom of the side slope (1); s4, laying the prefabricated slope protection mechanism (3) on the slope surface of the side slope (1), wherein the lower end of the prefabricated slope protection mechanism (3) is abutted against the base (2); s5, fixing the prefabricated slope protection mechanism (3).
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