CN107268370B - assembled concrete road - Google Patents
assembled concrete road Download PDFInfo
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- CN107268370B CN107268370B CN201710489661.9A CN201710489661A CN107268370B CN 107268370 B CN107268370 B CN 107268370B CN 201710489661 A CN201710489661 A CN 201710489661A CN 107268370 B CN107268370 B CN 107268370B
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- mineral admixture
- vanadium pentoxide
- cement
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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
- E01C5/00—Pavings made of prefabricated single units
- E01C5/06—Pavings made of prefabricated single units made of units with cement or like binders
- E01C5/065—Pavings made of prefabricated single units made of units with cement or like binders characterised by their structure or component materials, e.g. concrete layers of different structure, special additives
-
- 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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/02—Agglomerated materials, e.g. artificial aggregates
- C04B18/022—Agglomerated materials, e.g. artificial aggregates agglomerated by an organic binder
-
- 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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
- C04B20/023—Chemical treatment
-
- 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
- C04B28/02—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 hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- 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
- E01C11/00—Details of pavings
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/29—Frost-thaw resistance
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/40—Porous or lightweight materials
Abstract
the invention discloses an assembled concrete road which is characterized by comprising concrete block splicing blocks, wherein one side of each concrete block splicing block is also provided with a conical bulge, the bottom of each conical bulge is provided with a fixing pin, the fixing pins are fixed in the concrete block splicing blocks, one side of each concrete block splicing block is provided with a conical recess, the size of each conical recess is consistent with that of each conical bulge, and the concrete block splicing blocks are prepared from antifreeze concrete added with modified nano-material vanadium pentoxide. The assembled concrete road provided by the invention can be quickly assembled and paved and has a very good anti-shearing effect.
Description
Technical Field
the invention relates to an assembled concrete road.
Background
society currently builds a large number of roads of various grades, a large portion of which are concrete roads. At present, the domestic concrete road mainly adopts a cast-in-place concrete construction process, and needs construction processes of on-site formwork support, reinforcement binding, concrete pouring, concrete curing and the like. The cast-in-place concrete production process has the following main disadvantages:
the production efficiency is low, a large amount of manpower resources are consumed, and the construction period is long. The field construction mainly adopts manual operation, and the product quality is not easy to guarantee. The method has great environmental pollution, and the cast-in-place concrete causes environmental pollution such as noise, sewage, waste materials and the like. When the pavement is dismantled or abandoned, the pavement materials form construction wastes, and the construction wastes cannot be reused, thereby causing resource waste. The construction is greatly influenced by the climate. Construction is unfavorable in rainy season and cold season, and seasonal downtime is long. Therefore, the above disadvantages of the cast-in-place concrete road have become bottlenecks that restrict the industrial development of the concrete road.
Disclosure of Invention
Aiming at the problems, the invention provides the spliced concrete road which can be spliced and paved quickly and has a very good shear resistance effect.
in order to achieve the purpose, the invention provides the technical scheme that: the utility model provides an assemble concrete road, its characterized in that, it includes concrete piece splice, and concrete piece splice one side still installs the toper protruding, the protruding bottom of toper fixed foot has, fixed foot fix in concrete piece splice, concrete piece splice other one side has the toper sunken, its toper sunken and the protruding size of toper unanimity.
And the middle parts of the concrete block splicing blocks are provided with steel stranded rope through holes which respectively penetrate through the middle parts of the conical depressions and the conical bulges.
buffer rubber layers are arranged on two sides of the concrete block splicing block.
The two sides of the concrete block splicing block are respectively provided with the conical bulges and the conical depressions, so that two adjacent concrete block splicing blocks can be spliced into a whole through the conical bulges and the conical depressions, the conical bulges and the conical depressions are combined with each other to have a very good anti-shearing effect, the middle parts of the concrete block splicing blocks are provided with the steel stranded rope through holes, the steel stranded rope through holes respectively penetrate through the middle parts of the conical depressions and the conical bulges, so that the two adjacent concrete block splicing blocks can be fixed through the steel stranded wires, the bottom parts of the conical bulges are provided with fixing feet embedded into the concrete block splicing blocks, and the fixing effect is good.
Drawings
FIG. 1 is a block diagram of the present invention.
in the figure: 1. concrete piece splice 2, toper arch, 3, fixed foot, 4, toper sunken, 5, steel strand rope through-hole, 6, steel strand rope.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
referring to fig. 1, the assembled concrete road is characterized by comprising concrete block splicing blocks 1, wherein one side of each concrete block splicing block is provided with a conical protrusion 2, the bottom of each conical protrusion is provided with a fixing foot 3, the fixing feet are fixed in the concrete block splicing blocks, the other side of each concrete block splicing block is provided with a conical recess 4, the size of each conical recess is consistent with that of each conical protrusion, and therefore two adjacent concrete block splicing blocks can be connected in a matched mode.
The concrete block splicing blocks are provided with steel stranded rope through holes in the middle, the steel stranded rope through holes penetrate through the middle of the conical depressions and the middle of the conical bulges respectively, and therefore the steel stranded ropes can be connected with the concrete block splicing blocks in series to form a complete concrete road.
Buffer rubber layers are arranged on two sides of all the concrete block splicing blocks.
the concrete block splicing block 1 is prepared by adopting antifreeze concrete added with modified nano material vanadium pentoxide, wherein the antifreeze concrete added with the modified nano material vanadium pentoxide is synthesized by the methods of antifreeze treatment, rapid stirring treatment, pouring and the like by using vanadium pentoxide, P.O42.5 type cement, mineral admixture (mineral powder, coal ash 1: 1), sodium dodecyl sulfate (K12) air entraining agent, polycarboxylic acid water reducing agent and the like,
the specific embodiment of the preparation process is as follows:
example 1 samples of vanadium pentoxide, mineral admixture, and cement 2:70:500 (parts by unit) were prepared. 2 parts of vanadium pentoxide, 70 parts of mineral admixture, 500 parts of cement, 80 parts of polyethylene glycol emulsion, 1000 parts of tap water, 0.5 part of sodium dodecyl sulfate (K12) air entraining agent, 2 parts of polycarboxylic acid water reducing agent and 10 parts of deionized water.
Step 1, preparing a sealed container with the specification of 1 x 2m, putting 70 parts of mineral admixture (mineral powder and coal ash 1: 1) into the sealed container, vacuumizing to the negative pressure of 0.08MPa by using a vacuum pump, then injecting polyethylene glycol emulsion into the container, keeping the content of the polyethylene glycol emulsion at 40% (mass), standing for 2 hours under the condition of keeping stable negative pressure, and curing the mineral admixture (mineral powder and coal ash 1: 1) after standing for 3 days at the relative humidity of 60 +/-5% and the temperature of 25 +/-2 ℃ to obtain the antifreeze pretreated mineral admixture (mineral powder and coal ash 1: 1);
Step 2, putting the pretreated mineral admixture into a container, adding tap water for soaking for 12 hours, pouring the mineral admixture into the woven bag for filtering water for 60 minutes, then pouring the mineral admixture onto a wringed wet bath towel, and holding two ends of the wet bath towel by two persons respectively to roll the mineral admixture on the bath towel for 8-10 times;
step 3, respectively weighing 0.5 part of sodium dodecyl sulfate (K12) air entraining agent and 20 parts of tap water, mixing uniformly to obtain a mixed solution, then adding the mixed solution into a mineral admixture, and stirring for 5 minutes;
Step 4, adding 50-60% (the total cement amount is 500 parts by weight) of cement into the mineral admixture, adding 600 parts of tap water, and stirring for 10-30 minutes to form slurry with good fluidity with the cement, the mineral admixture and the water, so that the slurry has a lubricating effect, is beneficial to stirring and can ensure the porosity;
step 5, adding the residual 40-50% (the total cement amount is 500 parts by weight) of cement and 380 parts of tap water into a stirrer, stirring for 15-35 minutes, and uniformly coating the surface of the mineral admixture under the action of mechanical stirring, so that the porous concrete not only ensures the interconnected porosity, but also improves the strength of the porous concrete and the overall stability of the structure;
step 6, adding 2 parts of polycarboxylic acid water reducing agent into the mixture slurry, and stirring for 20min;
Step 7, pretreating 2 parts of vanadium pentoxide, firstly adding the vanadium pentoxide into a beaker, and then carrying out nitrogen purging treatment for 2 hours under the action of a magnetic field;
And step 8, after the pretreatment is finished, adding vanadium pentoxide into 10 parts of deionized water, uniformly stirring, and then carrying out acid treatment: purging for 3h at 50 ℃ under SO2 gas;
Step 9, washing with deionized water, and calcining in a tube furnace: firstly, calcining for 2 hours at 200 ℃ under the atmosphere of NH3 under 0.5kPa, and then calcining for 3 hours at 220 ℃ under the atmosphere of 0.4kPa to finally obtain nano-modified vanadium pentoxide;
step 10, adding the prepared nano-scale modified vanadium pentoxide into the preliminarily prepared concrete, and stirring for 1h to uniformly mix the nano-scale modified vanadium pentoxide with the preliminarily prepared concrete;
And 11, casting and molding, pre-curing, demolding, curing and finally obtaining the concrete.
Example 2 samples of vanadium pentoxide, mineral admixture, cement 2:70:500 (parts by unit) were prepared. 5 parts of vanadium pentoxide, 80 parts of mineral admixture, 480 parts of cement and other raw material dosage, and the operation steps are the same as those of the example 1.
Example 3 samples of vanadium pentoxide, mineral admixture, cement 2:75:500 (parts by unit) were prepared. 2 parts of vanadium pentoxide, 75 parts of mineral admixture and 500 parts of cement. The procedure was the same as in example 1 except for the amounts of other raw materials.
Example 4 samples of vanadium pentoxide, mineral admixture, cement 2:80:500 (parts by unit) were prepared. 2 parts of vanadium pentoxide, 80 parts of mineral admixture and 500 parts of cement. The procedure was the same as in example 1 except for the amounts of other raw materials.
Example 5 samples of vanadium pentoxide, mineral admixture, cement 2:85:500 (parts by unit) were prepared. 2 parts of vanadium pentoxide, 85 parts of mineral admixture and 500 parts of cement. The procedure was the same as in example 1 except for the amounts of other raw materials.
Example 6 samples of vanadium pentoxide, mineral admixture, and cement 2:90:500 (parts by unit) were prepared. 2 parts of vanadium pentoxide, 90 parts of mineral admixture and 500 parts of cement. The procedure was the same as in example 1 except for the amounts of other raw materials.
example 7 samples of vanadium pentoxide, mineral admixture, cement 2:70:520 (parts by unit) were prepared. 2 parts of vanadium pentoxide, 70 parts of mineral admixture and 520 parts of cement. The procedure was the same as in example 1 except for the amounts of other raw materials.
Example 8 samples of vanadium pentoxide, mineral admixture, cement 2:70:540 (parts by unit) were prepared. 2 parts of vanadium pentoxide, 70 parts of mineral admixture and 540 parts of cement. The procedure was the same as in example 1 except for the amounts of other raw materials.
Example 9 samples of vanadium pentoxide, mineral admixture, cement 2:70:560 (parts by unit) were prepared. 2 parts of vanadium pentoxide, 70 parts of mineral admixture and 560 parts of cement. The procedure was the same as in example 1 except for the amounts of other raw materials.
example 10 samples of vanadium pentoxide, mineral admixture, and cement 2:70:580 (parts by unit) were prepared. 2 parts of vanadium pentoxide, 70 parts of mineral admixture and 580 parts of cement. The procedure was the same as in example 1 except for the amounts of other raw materials.
example 11 samples of vanadium pentoxide, mineral admixture, cement 2:70:600 (parts by unit) were prepared. 2 parts of vanadium pentoxide, 70 parts of mineral admixture and 600 parts of cement. The procedure was the same as in example 1 except for the amounts of other raw materials.
Example 12 samples of vanadium pentoxide, mineral admixture, and cement 2.5:70:500 (parts by unit) were prepared. 2.5 parts of vanadium pentoxide, 70 parts of mineral admixture and 500 parts of cement. The procedure was the same as in example 1 except for the amounts of other raw materials.
Example 13 samples of vanadium pentoxide, mineral admixture, cement 3:70:500 (parts by unit) were prepared. 3 parts of vanadium pentoxide, 70 parts of mineral admixture and 500 parts of cement. The procedure was the same as in example 1 except for the amounts of other raw materials.
In comparative example 1, vanadium pentoxide, a mineral admixture, and cement were prepared in a ratio of 2:70:500 (parts by unit). 2 parts of vanadium pentoxide, 70 parts of mineral admixture and 500 parts of cement. The procedure is as in example 1, except that the mineral admixture is not subjected to an anti-freeze pretreatment and the other raw materials are used.
In comparative example 2, vanadium pentoxide, a mineral admixture and cement were prepared in a ratio of 2:70:500 (parts by unit). 2 parts of vanadium pentoxide, 70 parts of mineral admixture and 500 parts of cement. The operation steps are the same as in example 1, except that cement and other raw materials are not added step by step.
Comparative example 3A sample of vanadium pentoxide, mineral admixture, cement 2:70:500 (parts by unit) was prepared. 2 parts of vanadium pentoxide, 70 parts of mineral admixture and 500 parts of cement. The procedure of example 1 was followed except that the vanadium pentoxide was not subjected to magnetic field treatment and the other raw materials were used.
Comparative example 4A sample of vanadium pentoxide, mineral admixture, cement 2:70:500 (parts by unit) was prepared. 2 parts of vanadium pentoxide, 70 parts of mineral admixture and 500 parts of cement. The procedure of example 1 was followed without subjecting vanadium pentoxide to calcination treatment in a different atmosphere.
Comparative example 5A sample of a mineral admixture, cement 70:500 (parts by unit) was prepared. 70 parts of mineral admixture and 500 parts of cement. The procedure is as in example 1 except that no modified vanadium pentoxide was added, and the other starting materials were used.
And (3) anti-freezing test: according to a freezing resistance test method in GBJ 82-85 ordinary concrete long-term performance and durability test method, a quick freezing method is selected for testing. Prism test pieces of 100mm × 100mm × 400mm were molded, 3 pieces per set. The test pieces were subjected to freeze-thaw tests when they were maintained for 28 days of age. Taking out the freeze-thaw test piece from a maintenance place for 4 days before the test, performing appearance inspection, then soaking the freeze-thaw test piece in water at 20 +/-2 ℃, wherein the water surface is at least 2cm higher than the top surface of the test piece during soaking, and performing the freeze-thaw test after the freeze-thaw test piece is soaked for 4 days. The initial quality of the test piece is measured before testing, after the initial quality is tested, the test piece is placed into the test piece box and then is placed into the test piece rack in the freeze-thaw box, and at the moment, the freeze-thaw cycle can be started.
And (4) performing freeze-thaw cycling for 100 times and 200 times, then calculating the mass loss rate, and calculating the average value of each group of three test pieces of the anti-freezing coefficient.
The mass loss rate was calculated as follows
Δwn=(wo-wn)/w0×100%
Wn is the mass loss rate (%) of the test piece after N times of freeze-thaw cycles, and is accurate to 0.1;
W0 mass (g) of the concrete specimen before the freeze-thaw cycle test;
wn-quality (g) of concrete specimen after N cycles of freeze-thaw
the freezing resistance durability coefficient was calculated as follows:
Kn＝P×N／300（3.3）
In the formula, Kn represents the frost resistance durability coefficient (%) of the concrete sample after N times of freeze-thaw cycles;
N is the number of freeze-thaw cycles to which the concrete specimen is subjected;
P-relative dynamic elastic modulus (%) of the concrete specimen after N times of freeze-thaw cycles.
the relative dynamic elastic modulus should be calculated as follows:
P=fn/f0×100%
In the formula, P represents the relative dynamic elastic modulus (%) of the concrete sample after N times of freeze-thaw cycles;
fn-transverse fundamental frequency (Hz) of the concrete sample after N times of freeze-thaw cycles;
f0 transverse fundamental frequency initial value (Hz) of concrete sample before freeze-thaw cycle test
Table one freeze test results:
| group of | Freeze-thaw cycle 100 times mass loss rate% | freeze-thaw cycle 200 times mass loss rate% | anti-freezing coefficient% |
| Example 1 | 0.2 | 0.4 | 66.5 |
| Example 2 | 0.3 | 0.5 | 64.2 |
| Example 3 | 1.5 | 3.6 | 49.5 |
| Example 4 | 1.6 | 3.8 | 47.2 |
| Example 5 | 1.8 | 4.1 | 44.5 |
| example 6 | 1.3 | 3.6 | 49.8 |
| Example 7 | 1.7 | 3.8 | 47.6 |
| Example 8 | 1.4 | 3.5 | 50.1 |
| example 9 | 1.5 | 3.6 | 49.1 |
| Example 10 | 1.9 | 4.2 | 43.2 |
| Example 11 | 1.6 | 3.4 | 51.6 |
| Example 12 | 1.2 | 3.3 | 52.8 |
| Example 13 | 1.6 | 3.9 | 46.2 |
| comparative example 1 | 2.8 | 4.9 | 27.2 |
| comparative example 2 | 2.6 | 5.1 | 25.2 |
| comparative example 3 | 2.4 | 4.8 | 29.3 |
| comparative example 4 | 2.7 | 5.3 | 22.4 |
| comparative example 5 | 3.6 | 7.5 | 16.8 |
The experimental results show that: it can be found that in comparative examples, the antifreeze concrete added with the modified nano material vanadium pentoxide prepared in examples 1 and 2 has the lowest quality loss rate and the highest antifreeze coefficient, so that the antifreeze performance is the best. The raw material proportion has better synergistic effect, and the operation process is most favorable for synthesizing the antifreeze concrete added with the modified nano material vanadium pentoxide and having good antifreeze performance. The antifreeze concrete added with the modified nano material vanadium pentoxide prepared by other processes has common antifreeze performance. Comparative example 1, comparative examples 1,2,3,4 and 5 show that the antifreeze pretreatment is carried out on the mineral admixture, cement is added step by step, the magnetic field treatment is carried out on vanadium pentoxide, and the modified vanadium pentoxide is added to calcine the vanadium pentoxide under different atmospheres, so that the antifreeze performance of the prepared antifreeze concrete added with the modified nano-material vanadium pentoxide is greatly influenced.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (2)
1. The spliced concrete road is characterized by comprising concrete block splicing blocks, wherein one side of each concrete block splicing block is also provided with a conical bulge, the bottom of each conical bulge is provided with a fixing pin, the fixing pins are fixed in the concrete block splicing blocks, one side of each concrete block splicing block is provided with a conical recess, the size of each conical recess is consistent with that of each conical bulge, the middle parts of the concrete block splicing blocks are provided with steel stranded rope through holes, and the steel stranded rope through holes respectively penetrate through the middle parts of the conical recesses and the middle parts of the conical bulges;
The concrete block splicing block is prepared by adding modified nano material vanadium pentoxide antifreezing concrete, and the concrete preparation method comprises the following steps:
Step 1, putting 70 parts of mineral admixture into a sealed container, wherein the mineral admixture is mineral powder and coal ash according to a ratio of 1:1, vacuumizing to a negative pressure of 0.08MPa by using a vacuum pump, then injecting polyethylene glycol emulsion into the container, keeping the content of the polyethylene glycol emulsion at 40%, standing for 2h under a stable negative pressure condition, and curing the mineral admixture after standing for 3 days at a relative humidity of 60 +/-5% and a temperature of 25 +/-2 ℃ to obtain an anti-freezing pretreated mineral admixture;
Step 2, putting the mineral admixture obtained in the step 1 into a container, adding tap water for soaking for 12 hours, pouring the mineral admixture into the woven bag for filtering water for 60 minutes, then pouring the mineral admixture onto a wringed wet bath towel, holding two ends of the wet bath towel by two persons respectively, and enabling the mineral admixture to roll on the bath towel for 8-10 times;
Step 3, respectively weighing 0.5 part of sodium dodecyl sulfate air entraining agent and 20 parts of tap water, mixing uniformly to obtain a mixed solution, then adding the mixed solution into the mineral admixture obtained in the step 2, and stirring for 5 minutes;
Step 4, adding 250 parts of cement into the mineral admixture obtained in the step 3, adding 600 parts of tap water, and stirring for 10-30 minutes to enable the cement, the mineral admixture and water to form slurry with good fluidity, so that the slurry has a lubricating effect, is beneficial to stirring and can ensure the porosity;
Step 5, adding 250 parts of cement and 380 parts of tap water into the slurry obtained in the step 4, stirring for 15-35 minutes, and uniformly wrapping the surface of the mineral admixture under the action of mechanical stirring, so that the porous concrete not only ensures the interconnected porosity, but also improves the strength of the porous concrete and the overall stability of the structure;
Step 6, adding 2 parts of polycarboxylic acid water reducing agent into the mixture slurry obtained in the step 5, and stirring for 20min;
Step 7, pretreating 2 parts of vanadium pentoxide, firstly adding the vanadium pentoxide into a beaker, and then carrying out nitrogen purging treatment for 2 hours under the action of a magnetic field;
And step 8, after the pretreatment is finished, adding vanadium pentoxide into 10 parts of deionized water, uniformly stirring, and then carrying out acid treatment: purging for 3h at 50 ℃ under SO2 gas;
Step 9, washing with deionized water, and calcining in a tube furnace: firstly, calcining for 2 hours at 200 ℃ under the atmosphere of NH3 at 0.5kPa, and then calcining for 3 hours at 220 ℃ under the atmosphere of 0.4kPa to finally obtain nanoscale modified vanadium pentoxide;
Step 10, adding the nano-scale modified vanadium pentoxide obtained in the step 9 into the mixture slurry obtained in the step 6, and stirring for 1 hour to uniformly mix the mixture slurry;
And 11, casting molding, pre-curing, demolding and curing are carried out, and the frost-resistant concrete is finally obtained.
2. A fabricated concrete road according to claim 1, wherein all the concrete block segments have cushion rubber layers on both sides.
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| CN201710489661.9A CN107268370B (en) | 2017-06-24 | 2017-06-24 | assembled concrete road |
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| CN201710489661.9A CN107268370B (en) | 2017-06-24 | 2017-06-24 | assembled concrete road |
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| CN107268370B true CN107268370B (en) | 2019-12-06 |
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Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3640191A (en) * | 1969-07-25 | 1972-02-08 | John H Hendrich | Decking system |
| BE1011143A6 (en) * | 1997-05-05 | 1999-05-04 | Carfin | Concrete surfaces. |
| RU2371537C2 (en) * | 2008-02-18 | 2009-10-27 | Закрытое акционерное общество "ИМЭТСТРОЙ" (ЗАО "ИМЭТСТРОЙ") | Method of road construction on soft and frozen grounds and assembled coat for its realisation |
| CN202323605U (en) * | 2011-11-14 | 2012-07-11 | 苏州市广卫特种水泥制品有限公司 | Channel plate |
| CN102535295B (en) * | 2012-03-21 | 2014-12-10 | 长安大学 | Fabricated prestressed heat-resistant cement concrete pavement and construction process thereof |
| CN203923831U (en) * | 2014-07-07 | 2014-11-05 | 刘浦贵 | A kind of ladder type concrete member prestressing force assembling roadbed |
| CN107142807A (en) * | 2015-08-11 | 2017-09-08 | 孙欣 | A kind of low temperature resistant fast spreading road |
| CN105885597A (en) * | 2016-05-05 | 2016-08-24 | 张小霞 | Anti-freezing anti-corrosive paint for surface of steel structure and preparation method thereof |
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