CN116283190A - Solidified soil with high compressive strength and solidification shaping method and device thereof - Google Patents
Solidified soil with high compressive strength and solidification shaping method and device thereof Download PDFInfo
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- CN116283190A CN116283190A CN202310311401.8A CN202310311401A CN116283190A CN 116283190 A CN116283190 A CN 116283190A CN 202310311401 A CN202310311401 A CN 202310311401A CN 116283190 A CN116283190 A CN 116283190A
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- 239000002689 soil Substances 0.000 title claims abstract description 79
- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000007711 solidification Methods 0.000 title claims abstract description 21
- 230000008023 solidification Effects 0.000 title claims abstract description 21
- 238000007493 shaping process Methods 0.000 title abstract description 21
- 239000011384 asphalt concrete Substances 0.000 claims abstract description 60
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims abstract description 59
- 235000017491 Bambusa tulda Nutrition 0.000 claims abstract description 59
- 241001330002 Bambuseae Species 0.000 claims abstract description 59
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims abstract description 59
- 239000011425 bamboo Substances 0.000 claims abstract description 59
- 239000000758 substrate Substances 0.000 claims abstract description 34
- 239000004927 clay Substances 0.000 claims abstract description 20
- 239000010881 fly ash Substances 0.000 claims abstract description 20
- 239000010440 gypsum Substances 0.000 claims abstract description 20
- 229910052602 gypsum Inorganic materials 0.000 claims abstract description 20
- 229920000058 polyacrylate Polymers 0.000 claims abstract description 20
- 239000002245 particle Substances 0.000 claims abstract description 10
- 238000005096 rolling process Methods 0.000 claims abstract description 9
- 238000002156 mixing Methods 0.000 claims abstract description 7
- 238000003756 stirring Methods 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000006424 Flood reaction Methods 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims 1
- 239000002994 raw material Substances 0.000 abstract description 5
- 239000003795 chemical substances by application Substances 0.000 description 4
- 239000004576 sand Substances 0.000 description 3
- 238000005056 compaction Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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- 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
- C04B28/14—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 calcium sulfate cements
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- 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
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/04—Silica-rich materials; Silicates
-
- 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
- C04B18/04—Waste materials; Refuse
- C04B18/06—Combustion residues, e.g. purification products of smoke, fumes or exhaust gases
- C04B18/08—Flue dust, i.e. fly ash
-
- 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
- C04B18/04—Waste materials; Refuse
- C04B18/18—Waste materials; Refuse organic
- C04B18/24—Vegetable refuse, e.g. rice husks, maize-ear refuse; Cellulosic materials, e.g. paper, cork
- C04B18/26—Wood, e.g. sawdust, wood shavings
- C04B18/265—Wood, e.g. sawdust, wood shavings from specific species, e.g. birch
-
- 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
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/16—Sulfur-containing compounds
-
- 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
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/24—Macromolecular compounds
- C04B24/26—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C04B24/2641—Polyacrylates; Polymethacrylates
-
- 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
-
- 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
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- 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
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
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- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Engineering & Computer Science (AREA)
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- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
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- Civil Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Architecture (AREA)
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- Combustion & Propulsion (AREA)
- Life Sciences & Earth Sciences (AREA)
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Abstract
The invention discloses solidified soil with high compressive strength, a solidification shaping method and a solidification shaping device thereof, and the solidified soil comprises the following components in parts by weight: 40-60 parts of sandy silt, 4-8 parts of fly ash, 2-6 parts of gypsum, 10-20 parts of soil clay, 5-10 parts of polyacrylate, 5-10 parts of sulfonated oil, 2-8 parts of fine-grained asphalt concrete, 5-10 parts of medium-grained asphalt concrete, 5-10 parts of bamboo crushed aggregates and 5-10 parts of bamboo branches. The solidification and shaping step comprises mixing and stirring sandy silt, fly ash, gypsum, soil clay particles, polyacrylate, sulfonated oil and bamboo crushed aggregates to obtain a roadbed substrate; paving a roadbed substrate in a region to be poured, and paving bamboo branches on the surface of the roadbed substrate; and pouring the medium-grain asphalt concrete and the fine-grain asphalt concrete on the surface of the roadbed base in sequence, and finally leveling, rolling and maintaining the roadbed. The solidified soil prepared by the method has the advantages of high compressive strength, easily obtained raw materials and low cost.
Description
Technical Field
The invention relates to the technical field of solidified soil, in particular to solidified soil with high compressive strength and a solidification shaping method and device thereof.
Background
The existing construction waste soil contains a large amount of sandy silt, and the waste soil is large in amount and is a problem in clearing, stacking and digestion. In the prior art, a curing agent is added into sandy silt soil to form cured soil for constructing a road with the cured soil. However, the solidified soil formed by the sand silt after being treated by adding the solidifying agent can meet the requirements of strength and the like of roadbed, but the sand silt particles cannot be well connected together, and the problems of small friction force, poor stability and lower strength and rigidity exist when the sand silt particles are reflected to the macroscopic view, so that under the long-term action of road load, the solidified soil pavement generates larger uneven settlement due to the changes of plasticity, water content and the like of soil body, and the durability of the solidified soil pavement is difficult to meet the requirements.
Disclosure of Invention
The invention aims to provide solidified soil with high compressive strength, and a solidification shaping method and device thereof. The solidified soil prepared by the method has the advantages of high compressive strength, easily obtained raw materials and low cost.
The technical scheme of the invention is as follows: the solidified soil with high compressive strength comprises the following components in parts by weight: 40-60 parts of sandy silt, 4-8 parts of fly ash, 2-6 parts of gypsum, 10-20 parts of soil clay, 5-10 parts of polyacrylate, 5-10 parts of sulfonated oil, 2-8 parts of fine-grained asphalt concrete, 5-10 parts of medium-grained asphalt concrete, 5-10 parts of bamboo crushed aggregates and 5-10 parts of bamboo branches.
The solidified soil with high compressive strength comprises the following components in parts by weight: 45-55 parts of sandy silt, 5-7 parts of fly ash, 3-5 parts of gypsum, 12-18 parts of soil clay, 7-9 parts of polyacrylate, 7-9 parts of sulfonated oil, 3-5 parts of fine-grained asphalt concrete, 6-8 parts of medium-grained asphalt concrete, 6-9 parts of bamboo crushed aggregates and 7-9 parts of bamboo branches.
The solidified soil with high compressive strength comprises the following components in parts by weight: 50 parts of sandy silt, 6 parts of fly ash, 4 parts of gypsum, 15 parts of soil clay, 8 parts of polyacrylate, 8 parts of sulfonated oil, 4 parts of fine-grained asphalt concrete, 7 parts of medium-grained asphalt concrete, 8 parts of bamboo crushed aggregates and 8 parts of bamboo branches.
The solidification and shaping method of the solidified soil with high compressive strength comprises the following steps:
a. mixing and stirring sandy silt, fly ash, gypsum and soil clay particles, polyacrylate, sulfonated oil and bamboo crushed aggregates to prepare a roadbed substrate;
b. paving a roadbed substrate in a region to be poured, and paving bamboo branches on the surface of the roadbed substrate;
c. pouring the medium-grain asphalt concrete on the surface of the roadbed base, and then pouring the fine-grain asphalt concrete on the medium-grain asphalt concrete;
d. and finally, leveling, rolling and maintaining the roadbed.
In the aforementioned method for setting solidified soil having high compressive strength, in step a, the water content of the subgrade substrate is maintained at 15 to 25%.
In the aforementioned method for solidifying and shaping solidified soil with high compressive strength, in the step b, bamboo shoots are laid on the surface of the roadbed substrate, and the bamboo shoots are rolled by a flattening device so that part of the bamboo shoots are embedded into the roadbed substrate, and the other part of the bamboo shoots are exposed above the surface of the roadbed substrate.
In the step c, the middle-grain asphalt concrete is poured on the substrate, the middle-grain asphalt concrete coats a part of bamboo branches, then the fine-grain asphalt concrete is poured on the middle-grain asphalt concrete, and the fine-grain asphalt concrete floods the bamboo branches.
In the step d, curing is carried out for 28d-60d age to check and accept.
The utility model provides a solidified soil flattening device with high compressive strength, includes the road roller, the front end and/or the rear end of road roller are equipped with the cylinder, and the middle part of cylinder is equipped with the hollow post, wears to be equipped with the pivot in the hollow post; a plurality of support column groups are distributed on the hollow column at intervals along the axial direction of the hollow column, each group of support column groups comprises a plurality of annularly distributed support columns, and the upper ends of the support columns are connected with the inner surface of the roller; an electromagnetic coil surrounds the support column; the outer part of the support column is sleeved with a cylindrical impact block; the inside of support column is equipped with the cavity passageway, is equipped with in the cavity passageway and hits the ball.
According to the flattening device for the solidified soil with high compressive strength, the support column groups are arranged in a spiral mode.
Compared with the prior art, the invention takes the sandy silt as the raw material, takes the fly ash, the gypsum and the soil clay as the external admixture, takes the polyacrylate and the sulfonated oil as the curing agent, takes the bamboo crushed aggregates and the bamboo branches as the connecting bodies, and takes the fine-grained asphalt concrete and the medium-grain asphalt concrete as the auxiliary bodies, so that the cured soil with high compressive strength is obtained. Moreover, the raw materials are easy to obtain, the cost is low, and the environment is protected. In addition, the invention further provides a solidification shaping method and a solidification shaping device for solidified soil, and the compaction degree of the solidified soil can be improved by utilizing the solidification shaping method and the solidification shaping device, so that the compressive strength of the solidified soil is improved.
Drawings
Fig. 1 is a schematic structural view of a solidified soil.
FIG. 2 is a schematic view of a drum structure in the apparatus of the present invention;
fig. 3 is a schematic view of the internal structure of the drum in the apparatus of the present invention.
Reference numerals
1. A roller; 2. hollow column, 3, spindle; 4. a support column; 5. an electromagnetic coil; 6. an impact block; 7. a hollow passage; 8. the ball is struck.
Detailed Description
The invention is further illustrated by the following figures and examples, which are not intended to be limiting.
Example 1: the solidified soil with high compressive strength comprises the following components in parts by weight: 45kg of sandy silt (from a foundation pit of a construction site near Beijing, the soil is sandy silt, the plastic limit is 18%, the liquid limit is 24%, the plastic index is 6), 8kg of fly ash, 3kg of gypsum, 15kg of soil clay particles (soil particles with the diameter of less than 0.005mm, the same applies below), 9kg of polyacrylate, 6kg of sulfonated oil, 6kg of fine-grained asphalt concrete (commercially available), 7kg of medium-grained asphalt concrete (commercially available), 6kg of bamboo crushed materials (strips, the length is 4-9cm, the thickness and the height are 0.1-1cm, the same applies below), and 8kg of bamboo branches (including a bamboo trunk on which side branches grow, the length is 5-15 cm).
The solidification shaping method of the solidified soil comprises the following steps:
a. mixing and stirring sandy silt, fly ash, gypsum and soil clay particles, polyacrylate, sulfonated oil and bamboo crushed aggregates to prepare a roadbed substrate;
b. paving a roadbed substrate in a region to be poured, and paving bamboo branches on the surface of the roadbed substrate;
c. pouring the medium-grain asphalt concrete on the surface of the roadbed base, and then pouring the fine-grain asphalt concrete on the medium-grain asphalt concrete, wherein the roadbed base, the medium-grain asphalt concrete and the fine-grain asphalt concrete are sequentially arranged from bottom to top in the view of FIG. 1;
d. and finally, leveling, rolling and curing the roadbed, wherein the curing period is 28-60 d.
Example 2: the solidified soil with high compressive strength comprises the following components in parts by weight: 55kg of sandy silt, 8kg of fly ash, 5kg of gypsum, 20kg of soil clay, 8kg of polyacrylate, 6kg of sulfonated oil, 5kg of fine-grained asphalt concrete, 8kg of medium-grained asphalt concrete, 5kg of bamboo crushed aggregates and 7kg of bamboo branches.
The solidification shaping method of the solidified soil comprises the following steps:
a. mixing and stirring sandy silt, fly ash, gypsum and soil clay particles, polyacrylate, sulfonated oil and bamboo crushed aggregates to prepare a roadbed substrate;
b. paving a roadbed substrate in a region to be poured, and paving bamboo branches on the surface of the roadbed substrate;
c. pouring the medium-grain asphalt concrete on the surface of the roadbed base, and then pouring the fine-grain asphalt concrete on the medium-grain asphalt concrete;
d. and finally, leveling, rolling and curing the roadbed, wherein the curing period is 28-60 d.
Example 3: the solidified soil with high compressive strength comprises the following components in parts by weight: 50kg of sandy silt, 6kg of fly ash, 4kg of gypsum, 15kg of soil clay, 8kg of polyacrylate, 8kg of sulfonated oil, 4kg of fine-grained asphalt concrete, 7kg of medium-grained asphalt concrete, 8kg of bamboo crushed aggregates and 8kg of bamboo branches.
The solidification shaping method of the solidified soil comprises the following steps:
a. mixing and stirring sandy silt, fly ash, gypsum and soil clay particles, polyacrylate, sulfonated oil and bamboo crushed aggregates to prepare a roadbed substrate;
b. paving a roadbed substrate in a region to be poured, and paving bamboo branches on the surface of the roadbed substrate;
c. pouring the medium-grain asphalt concrete on the surface of the roadbed base, and then pouring the fine-grain asphalt concrete on the medium-grain asphalt concrete;
d. and finally, leveling, rolling and curing the roadbed, wherein the curing period is 28-60 d.
Example 4: the solidified soil with high compressive strength comprises the following components in parts by weight: 50kg of sandy silt, 6kg of fly ash, 4kg of gypsum, 15kg of soil clay, 8kg of polyacrylate, 8kg of sulfonated oil, 4kg of fine-grained asphalt concrete, 7kg of medium-grained asphalt concrete, 8kg of bamboo crushed aggregates and 8kg of bamboo branches.
The solidification shaping method of the solidified soil comprises the following steps:
a. mixing sandy silt, fly ash, gypsum and clay, polyacrylate, sulfonated oil and bamboo crushed aggregates, and stirring to obtain roadbed substrate with water content of 15-25%
b. Paving a roadbed substrate in a region to be poured, paving bamboo shoots on the surface of the roadbed substrate, and rolling the bamboo shoots by using a flattening device so that one part of the bamboo shoots is embedded into the roadbed substrate, and the other part of the bamboo shoots is exposed above the surface of the roadbed substrate.
c. And pouring the medium-grain asphalt concrete on the surface of the roadbed substrate, coating a part of bamboo branches by the medium-grain asphalt concrete, and pouring the fine-grain asphalt concrete on the medium-grain asphalt concrete, wherein the bamboo branches are submerged by the fine-grain asphalt concrete.
d. And finally, leveling, rolling and curing the roadbed, wherein the curing period is 28-60 d.
Example 5: the utility model provides a solidified soil flattening device with high compressive strength, as shown in fig. 1 and 2, includes the road roller, the front end and/or the rear end of road roller are equipped with cylinder 1, and the middle part of cylinder 1 is equipped with hollow post 2, wears to be equipped with pivot 3 in the hollow post 2; a plurality of support column 4 groups are distributed on the hollow column 2 at intervals along the axial direction of the hollow column, each group of support column 4 groups comprises a plurality of annularly distributed support columns 4, and the upper end parts of the support columns 4 are connected with the inner surface of the roller 1; the electromagnetic coil 5 is wound on the support column 4; the outside of the support column 4 is sleeved with a cylindrical impact block 6; the inside of support column 4 is equipped with cavity passageway 7, is equipped with in the cavity passageway 7 and hits ball 8. In this embodiment, when the drum 1 rolls and the impact block 6 and the impact ball 8 move towards the direction of the hollow column 2 (i.e. the supporting column 4 rotates above the drum 1), the electromagnetic coil 5 has no current, the impact block 6 and the impact ball 8 drop down to the hollow column 2 according to self gravity, and when the drum 1 rolls and the impact block 6 and the impact ball 8 move towards the direction of the inner surface of the drum 1 (i.e. the supporting column 4 rotates below the drum 1), the electromagnetic coil 5 is supplied with current, the electromagnetic coil 5 generates electromagnetic force to act on the impact block 6 and the impact ball 8, so that the impact block 6 and the impact ball 8 can drop under stress, thereby generating larger downward pressure, so that the downward pressure capability of the drum 1 is enhanced.
Preferably, the supporting columns 4 are arranged in a spiral manner, which can enable the movement of each impact block 6 and each impact ball 8 to be more regular, so that the downward force of the impact block 6 and each impact ball 8 can be received no matter which surface of the roller 1 is grounded.
Example 6: the cured soil prepared in examples 1 to 4 was subjected to a lateral compressive strength test and an indirect tensile strength test using a universal tester, wherein the press loading rate was controlled at 1mm/min, and curing was performed at 7d,14d,28d,60d and 90d, respectively, with the results shown in the following Table 1 (unit: MPa):
| 7d | 14d | 28d | 60d | 90d | |
| example 1 | 2.43 | 3.39 | 5.12 | 5.14 | 5.13 |
| Example 2 | 2.89 | 3.45 | 5.25 | 5.30 | 5.29 |
| Example 3 | 3.94 | 3.47 | 5.68 | 5.70 | 5.71 |
| Example 4 | 3.03 | 3.92 | 6.03 | 6.08 | 6.01 |
TABLE 1
| 7d | 14d | 28d | 60d | 90d | |
| Example 1 | 0.41 | 0.56 | 0.72 | 0.73 | 0.70 |
| Example 2 | 0.42 | 0.58 | 0.73 | 0.73 | 0.71 |
| Example 3 | 0.48 | 0.60 | 0.75 | 0.76 | 0.75 |
| Example 4 | 0.50 | 0.65 | 0.79 | 0.81 | 0.71 |
TABLE 2
As can be seen from tables 1 and 2, the solidified soil of examples 1 to 4 has a relatively high compressive strength increasing rate at the ages of 7d,14d and 28d, and has a substantially stable compressive strength at the ages of 60d to 90d, and has a relatively low compressive strength at the ages of 28d to 90d, which means that the solidified soil of the present application can be cured and formed substantially within the time of 28 d. Meanwhile, as can be seen from comparative examples 1-4, the preferred proportion and parameters in example 3 can achieve better compression resistance, while as can be seen from comparative example 4, the bamboo shoots arranged in the preferred process can further improve the compression resistance of the solidified soil.
The invention takes sandy silt as raw materials, takes fly ash, gypsum and soil clay as external admixture, takes polyacrylate and sulfonated oil as curing agents, takes bamboo crushed aggregates and bamboo branches as connecting bodies, and takes fine-grain asphalt concrete and medium-grain asphalt concrete as auxiliary bodies, thereby obtaining the cured soil with high compressive strength. Good durability. In addition, the invention further provides a solidification shaping method and a solidification shaping device for solidified soil, and the compaction degree of the solidified soil can be improved by utilizing the solidification shaping method and the solidification shaping device, so that the compressive strength of the solidified soil is improved.
Claims (10)
1. The solidified soil with high compressive strength is characterized in that: comprises the following components in parts by weight: 40-60 parts of sandy silt, 4-8 parts of fly ash, 2-6 parts of gypsum, 10-20 parts of soil clay, 5-10 parts of polyacrylate, 5-10 parts of sulfonated oil, 2-8 parts of fine-grained asphalt concrete, 5-10 parts of medium-grained asphalt concrete, 5-10 parts of bamboo crushed aggregates and 5-10 parts of bamboo branches.
2. The solidified soil having high compressive strength according to claim 1, wherein: comprises the following components in parts by weight: 45-55 parts of sandy silt, 5-7 parts of fly ash, 3-5 parts of gypsum, 12-18 parts of soil clay, 7-9 parts of polyacrylate, 7-9 parts of sulfonated oil, 3-5 parts of fine-grained asphalt concrete, 6-8 parts of medium-grained asphalt concrete, 6-9 parts of bamboo crushed aggregates and 7-9 parts of bamboo branches.
3. The solidified soil having high compressive strength according to claim 2, wherein: comprises the following components in parts by weight: 50 parts of sandy silt, 6 parts of fly ash, 4 parts of gypsum, 15 parts of soil clay, 8 parts of polyacrylate, 8 parts of sulfonated oil, 4 parts of fine-grained asphalt concrete, 7 parts of medium-grained asphalt concrete, 8 parts of bamboo crushed aggregates and 8 parts of bamboo branches.
4. A setting method of a solidified soil having a high compressive strength according to any one of claims 1 to 3, characterized in that: the method comprises the following steps:
a. mixing and stirring sandy silt, fly ash, gypsum and soil clay particles, polyacrylate, sulfonated oil and bamboo crushed aggregates to prepare a roadbed substrate;
b. paving a roadbed substrate in a region to be poured, and paving bamboo branches on the surface of the roadbed substrate;
c. pouring the medium-grain asphalt concrete on the surface of the roadbed base, and then pouring the fine-grain asphalt concrete on the medium-grain asphalt concrete;
d. and finally, leveling, rolling and maintaining the roadbed.
5. The method for setting a solidified soil having high compressive strength according to claim 4, wherein: in step a, the water content of the roadbed substrate is kept between 15 and 25 percent.
6. The method for setting a solidified soil having high compressive strength according to claim 4, wherein: in the step b, the bamboo shoots are paved on the surface of the roadbed substrate, a flattening device is used for rolling the bamboo shoots so that part of the bamboo shoots are embedded into the roadbed substrate, and the other part of the bamboo shoots are exposed above the surface of the roadbed substrate.
7. The method for setting and solidifying soil having high compressive strength according to claim 6, wherein: in the step c, the medium-grain asphalt concrete is poured on the substrate, the medium-grain asphalt concrete coats a part of bamboo branches, then the fine-grain asphalt concrete is poured on the medium-grain asphalt concrete, and the fine-grain asphalt concrete floods the bamboo branches.
8. The method for setting a solidified soil having high compressive strength according to claim 4, wherein: in the step d, curing is carried out for 28d-60d until acceptance.
9. The utility model provides a solidification soil's flattening device with high compressive strength, includes road roller, its characterized in that: the front end and/or the rear end of the road roller are/is provided with a roller (1), the middle part of the roller (1) is provided with a hollow column (2), and a rotating shaft (3) is arranged in the hollow column (2) in a penetrating way; a plurality of support column groups are distributed on the hollow column (2) at intervals along the axial direction of the hollow column, each group of support column groups comprises a plurality of annularly distributed support columns (4), and the upper end parts of the support columns (4) are connected with the inner surface of the roller (1); an electromagnetic coil (5) is wound on the support column (4); the outside of the support column (4) is sleeved with a cylindrical impact block (6); the inside of support column (4) is equipped with cavity passageway (7), is equipped with in cavity passageway (7) and hits ball (8).
10. The solidified soil flattening apparatus having high compressive strength of claim 9, wherein: the support column groups are arranged in a spiral mode.
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| CN202310311401.8A CN116283190A (en) | 2023-03-28 | 2023-03-28 | Solidified soil with high compressive strength and solidification shaping method and device thereof |
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