CN113929378A - Oil shale semicoke and application of modified material thereof - Google Patents
Oil shale semicoke and application of modified material thereof Download PDFInfo
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- CN113929378A CN113929378A CN202110485453.8A CN202110485453A CN113929378A CN 113929378 A CN113929378 A CN 113929378A CN 202110485453 A CN202110485453 A CN 202110485453A CN 113929378 A CN113929378 A CN 113929378A
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- 239000000463 material Substances 0.000 title claims abstract description 64
- 239000004058 oil shale Substances 0.000 title claims abstract description 34
- 239000004567 concrete Substances 0.000 claims abstract description 72
- 239000002689 soil Substances 0.000 claims abstract description 60
- 239000004568 cement Substances 0.000 claims abstract description 56
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 16
- 239000000571 coke Substances 0.000 claims abstract description 13
- 239000010881 fly ash Substances 0.000 claims abstract description 12
- 239000012779 reinforcing material Substances 0.000 claims abstract description 5
- 238000002156 mixing Methods 0.000 claims description 20
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 10
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Classifications
-
- 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
-
- 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
- C04B2111/00732—Uses not provided for elsewhere in C04B2111/00 for soil stabilisation
-
- 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
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
-
- 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
Abstract
The invention relates to the field of resource utilization of solid wastes, in particular to application of oil shale semi-coke and a modified material thereof; the first purpose of the invention is to provide an application of oil shale semicoke and a modified material thereof as a soil body reinforcing material; the second purpose of the invention is to provide the application of the oil shale semi-coke and the modified material thereof as the admixture of cement concrete; the beneficial effects are as follows: the invention verifies that soil body solidifying agent reinforced soil (semicoke reinforced soil) can replace conventional cement reinforced soil and lime reinforced soil to be used on a road bed (or a roadbed cushion); the invention proves that the semicoke admixture replaces the fly ash admixture in the conventional cement concrete or the application of part of cement in the highway low-grade concrete (C25-C35).
Description
Technical Field
The invention relates to the field of resource utilization of solid wastes, in particular to oil shale semi-coke and application of a modified material thereof.
Background
The invention aims to use specially processed oil shale semicoke as a soil body reinforcing material and a cement concrete admixture plan to carry out performance verification and evaluation on a pavement test road in a clear Fried highway construction project.
Disclosure of Invention
The first purpose of the invention is to provide an application of oil shale semicoke and a modified material thereof as a soil body reinforcing material; the second purpose of the invention is to provide application of the oil shale semi-coke and the modified material thereof as a cement concrete admixture.
In order to achieve the purpose, the invention provides the following technical scheme:
an application of oil shale semicoke and a modified material thereof, and an application of the oil shale semicoke and the modified material thereof as a soil body reinforcing material.
The oil shale semi-coke and the modified material thereof are added into 32.5 cement, secondary fly ash and slaked lime to obtain the soil body curing agent.
The oil shale semicoke and the modified material thereof account for 15%, 10% and 5% of the soil body curing agent.
An application of oil shale semi-coke and a modified material thereof, and an application of the oil shale semi-coke and the modified material thereof as a cement concrete admixture.
And adding the oil shale semicoke and the modified material thereof into a cement concrete cementing material, and then mixing to prepare the cement concrete.
The oil shale semi-coke and the modified material thereof account for 20 percent of the cement concrete cementing material.
The cement concrete is marked with numbers C25 and C30.
Compared with the prior art, the invention has the beneficial effects that: the invention verifies that soil body solidifying agent reinforced soil (semicoke reinforced soil) can replace conventional cement reinforced soil and lime reinforced soil to be used on a road bed (or a roadbed cushion); the invention proves that the semicoke admixture replaces the fly ash admixture in the conventional cement concrete or the application of part of cement in the highway low-grade concrete (C25-C35).
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1: soil body reinforcement
1. Test of
1.1 purpose of the test
The performance of the BJG soil body curing agent reinforced soil (hereinafter referred to as 'semicoke reinforced soil') developed by the project in replacing conventional cement reinforced soil and lime reinforced soil in a road bed (or a roadbed cushion layer) of a highway is verified.
1.2 content of the experiment
1) The higher mixing amount (15%) of the semicoke strengthens the soil road bed;
2) the middle mixing amount (10%) of the semicoke strengthens the soil road bed;
3) the lower mixing amount (5%) is used for reinforcing the soil road bed by the semicoke.
2. Engineering overview of a test road section
The test section is initially determined at a section K37+ 100-K37 +800 from a clear Fu four-standard starting point, each test section of the semicoke reinforced soil roadbed with three different doping amounts is 200m, the thickness is 60cm in total, the degree of compaction is not less than 96%, the test section is filled in layers and compacted in layers, the thickness of the compacted layers is not more than 20cm, and the operation is planned to be started at 8 months and 20 days in 2020.
2.1 assay content
1) Carrying out unconfined strength test and CBR test on the indoor molding synchronous test piece;
2) performing field CBR test;
3) detecting shrinkage cracks in different life-preserving periods;
4) core sample integrity.
2.2 materials for test road sections
The BJG soil body curing agent comprises oil shale semicoke, 32.5 cement, secondary fly ash and slaked lime. The oil shale semicoke is produced by a cooperative manufacturer according to related indexes, and the cement, the fly ash and the slaked lime are supplied by qualified suppliers on the project tender.
1) And calculating the raw materials required by each section of test section according to the standard that the width of the test section roadbed is 5m, the thickness of the test section roadbed is 50cm and the maximum dry density of the reinforced soil is 2.0.
2) The higher doping amount (15%) of the semicoke reinforced soil road bed is 150m, and the required BJG curing agent is 112.5t (wherein: 67.5t of calcined semicoke, 33.75t of 32.5 cement, 11.25t of secondary fly ash and 11.25t of slaked lime);
3) the middle mixing amount (10%) of the semicoke is 150m, and the required BJG curing agent is 75t (wherein: 45t of calcined semicoke, 22.5t of 32.5 cement, 7.5t of secondary fly ash and 7.5t of slaked lime);
4) the lower mixing amount (5%) of the semicoke reinforced soil road bed is 150m, and the required BJG curing agent is 37.5t (wherein: 22.5t of calcined semicoke, 11.25t of 32.5 cement, 3.75t of secondary fly ash and 3.75t of slaked lime).
3. Preparation for construction
3.1 mechanical Equipment Condition
| Serial number | Device name | Specification ofModel number | Number of | Remarks for note |
| 1 | Digging machine | Shandong Lingong (a Chinese character of Shandong) | 1 table | |
| 2 | Vibrating sheep horn roller | 22T | 2 table | |
| 3 | Vibratory roller | 25T | 1 table | |
| 4 | Lime soil road mixer | WZB21 | 1 table | |
| 5 | Loading machine | ZLM50E | 1 table | |
| 6 | Land leveler | PY190 | 1 table | |
| 7 | Watering cart | 12 square | 1 table | |
| 8 | Self-unloading automobile | 24 square | 4 tables | |
| 9 | Powder material spreading vehicle | 1 table |
3.2 raw materials and semi-finished products entering the field
1) Procurement and supply of materials
The main materials and the bulk construction temporary materials are intensively tendered and purchased by a project department, and the tendered purchase is preferentially adopted for batch purchase.
2) And (3) the material is transported by a supplier or a manufacturer to deliver the material to the site, sampling and detecting are carried out in time, the material is unqualified in detection and is directly returned to the site, and the material can be used for road bed filling after the material is qualified in detection.
4. Construction process and scheme
4.1 Process flow
Raw ground processing → measuring and paying-off → square line making → feeding → loader rough leveling → land leveler finish leveling → spreading vehicle cloth → mixing (stirring fully) → checking the amount of ash, water content → leveling and rolling → curing
4.2 measurement of pay-off
1) And (3) measuring the side piles on the left side and the right side of the central pile according to the pile number of every 10 meters, controlling the center line of the roadbed at the test section, filling the side lines and the thickness at the test section, and adopting a signboard with scales.
2) The width of the filling soil is designed to be 30cm on each side, so that the compactness of the side slope and the driving safety of the road roller are ensured. And (4) putting side lines, and scattering the side lines with lime as an obvious mark of the filling width.
4.3 preparing and sealing materials
According to construction requirements, the doped materials are fed in batches, the fed materials are detected, lime can be put into use when the lime reaches the standard of more than two levels, the lime is fully digested within 7-10 days before use, the digested lime keeps a certain humidity, flying of the lime is reduced, and the digested slaked lime passes through a 10mm sieve. The roadbed is filled with soil within a specified range, and the roadbed is watered and covered with soil in advance according to the natural water content.
4.4 roadbed filling
1) According to the actual construction situation on site, the grid is divided into large grids of 15 multiplied by 20m, and the soil volume for each grid is calculated to be 58m3 according to the virtual paving coefficient of 1.2.
2) And calculating the stacking distance of each vehicle according to the water content of the material yard soil and the tonnage of the used material transporting vehicle.
3) On the lower bearing layer of the preset stacking material, water should be sprayed before stacking so that the surface of the lower bearing layer is wet and not excessively wet to cause mud.
4) When loading soil, the quantity of materials of each truck is controlled to be basically equal. And in the same road section, the materials are unloaded from far to near to the middle or two sides of the surface of the lower bearing layer according to distance calculation. The discharging distance should be strictly controlled, and insufficient or excessive materials in certain road sections are avoided. The stacking time of the soil on the lower bearing layer should not be too long. The soil conveying process is preferably advanced by 1-2 days compared with the paving process.
4.5 leveling and pressure stabilization
1) Roughly leveling the filler by using a loader and a leveler, and supplementing the filler at uneven positions by matching with manpower;
2) the heavy road roller is used for pressure stabilization molding, the roadbed width and the cross slope are detected, and the design requirements are met;
3) the thickness of the loose soil layer is checked, and the predicted requirement is met;
4) except that the watering car is outer, other vehicles are forbidden to pass on the soil layer strictly.
4.6 mixing of additives
After the road bed soil is paved to meet the requirements, various materials of the curing agent are spread. The BJG soil body curing agent comprises oil shale semicoke, 32.5 cement, secondary fly ash and slaked lime, and is planned to be put into a powder distribution truck and a road mixer respectively in order to ensure uniform mixing. Firstly, calculating the using amount of the curing agent according to the filling amount of a test section, spreading by using a spreading vehicle according to the sequence of oil shale semicoke, 32.5 cement, secondary fly ash and slaked lime, then mixing twice by using a road mixer, carrying out self-checking on the water content and the dosage of the curing agent by a construction site laboratory after uniformly mixing, and ensuring that all indexes meet requirements.
4.7 leveling and Rolling
1) After the lime soil is evenly mixed, a grader is used for primary shaping immediately. In the straight line segment, the grader scrapes from two sides to the center of the road; in the leveling curve section, the grader scrapes from the inside to the outside. And if necessary, returning to scraping.
2) And (3) raking the surface layer of the local low-lying part by using a toothed rake for more than 5cm, and leveling by using the newly-mixed mixture. And if necessary, shaping once again by using a grader. The high material should be directly scraped out of the way without forming a thin layer patch.
3) The required grade and camber should be achieved for each shaping, and special care should be taken that the joint must be smooth and even. During the shaping process, any vehicle traffic is strictly prohibited.
4) When the roadbed lime soil is rolled, the surface of the lime soil needs to be wet, and the rolling follows: compacting by an operation program of firstly performing static pressure and then performing vibration and then performing static pressure in the middle of the road roller, controlling the running speed of the road roller within 2km/h, and performing rolling and dividing into initial pressure, re-pressure and final pressure.
5) The initial pressing (static pressure) adopts a 22t heavy road roller, the vibration device is closed, and the static pressure is firstly carried out twice, so that the functions of leveling and stabilizing the mixture are achieved.
6) And (3) opening the vibration device during re-pressing, performing weak vibration once, performing strong vibration for four times, and performing compaction degree detection when the compaction density basically reaches 94% and the compaction degree reaches 96% in the two times of strong vibration.
7) And (4) carrying out static pressure on the road roller for 1-2 times during final pressing.
8) During rolling, the section joints should be overlapped and compacted, the longitudinal lap length is not less than 3m, and the track overlapping compaction between the longitudinal rows is not less than the wheel track 1/3.
4.8 curing
1) And (4) closing the construction site, so that non-constructors and vehicles cannot enter a maintenance road section.
2) Road rollers and heavy vehicles are strictly prohibited from running on a formed road section, and a sprinkler car and the like cannot turn around or brake suddenly on a formed road surface.
3) The work of sprinkling water, preserving moisture and preserving health for more than 7 days is carried out by a specially-assigned person who is equipped with a 10m3 waterwheel. The wet state of the surface of the lime soil base layer is kept at any time.
5. Quality inspection and specification requirements
1) After being rolled and formed, the technical responsible person and the quality inspection responsible person at the project department bring the relevant persons for self-inspection.
2) The surface is required to be smooth, and the phenomena of obvious wheel marks, slurry turning, peeling and wrinkling are avoided.
3) The compaction degree test frequency is 2 positions of each compaction layer detection of every 200m, the height and the width are measured once every filling layer, the compaction degree is detected layer by layer, and the compaction degree standard is not less than 96%.
6. Data arrangement
When the test section is constructed, a technician and a tester should make original records, and after the test section is finished, the data is sorted in time.
7. Test results
7.1 indoor Forming synchronous test piece for unconfined Strength test, CBR test, compaction degree, etc
7.2 comparison of economic benefits of semicoke reinforced soil and other mixtures
8. Conclusion
1. The low-parameter 5% reinforced soil cannot replace conventional cement reinforced soil and lime reinforced soil for road bed treatment.
2. The medium-parameter 10% reinforced soil can replace 5% of lime soil and 3% of cement soil to be used in the treatment of projects such as loess collapse, temporary stations, temporary sidewalks and the like, and the economic cost is high.
3. The high-parameter 15% reinforced soil can replace 10% of lime soil and 5% of cement reinforced soil to be used for road bed treatment, but the economic cost is higher.
Example 2: cement concrete
1. Test of
1.1 purpose of the test
The application performance of the semicoke admixture developed by the project in the low-grade highway concrete (C25-C35) is verified by replacing the fly ash admixture in the conventional cement concrete or part of the cement.
1.2 content of the experiment
1) Adding semicoke according to 20% of cement concrete cementing material, and mixing the C25 cement concrete pouring concrete pavement and other structures (the concrete content of the cement is reduced correspondingly based on field test data);
2) adding semicoke according to 20% of cement concrete cementing material, and mixing C30 cement concrete cast retaining wall or other small and medium-sized structures (the cement mixing amount is reduced according to the field test data).
1.3 number of test road sections
50-100m of C25 cement concrete pavement and 50-100m of C30 cement concrete retaining wall, and is planned to be used in the temporary construction of a mixing station.
1.4 assay content
1) Synchronizing the strength of the test piece;
2) strength, fracture, core temperature of the site structure;
3) the appearance performance of the structure;
1.5 materials required for test road section
1) The height of the retaining wall test section is 2m, the section volume is 1.5m3/m, and the semi-coke required by the test section is calculated to be about 10t based on the oblique retaining wall with the test section length of 50 m.
2) The length of the concrete pavement is 50 meters, the width is 5 meters, and the thickness is 0.3 meter, the calculated semicoke concrete needed by the test section is about 375m3, and the needed semicoke admixture is about 20 t.
3) Material preparation
Preparing materials such as steel, cement, ground materials and the like according to the related contents of the construction design drawing
And working, evaluating qualified material suppliers according to a quality assurance system, signing a long-term supply contract, ensuring that the material is supplied according to a use plan, and meeting the normal construction requirements. The quality is strictly related to all the approach materials.
4) The mixing station is provided with 6 bulk cement tanks of 100 tons on site for storing the cement in the field. Before entering the warehouse, the cement is subjected to sampling test and sample reservation according to the test inspection requirements; the cement is approved to be used after the stability, the setting time and the strength of the cement are detected to be qualified.
5) Strictly controlling sand and gravel sources; the particle size of the broken stone is ensured to meet the requirement, the broken stone is hard in texture and good in gradation, and the mud content and the mud block content are lower than the standard requirement. In rainy season, materials are prepared in advance, and according to the requirement of production (construction) progress, the required amount of the construction period is prepared in advance.
6) The varieties of the additive and the admixture are determined by trial and test, and the water reducing agent with better uniformity and operability is selected. The liquid admixture is stored in a ventilated place of Yinjing to avoid strong light exposure, and is often stirred in the using process.
2. Test road section construction scheme
2.1 template fabrication
1) The template adopts a shaping steel die, and a professional template processing factory is selected for processing, so that the size and the flatness of each part of the template are ensured to meet the requirements of specification and design, and sufficient rigidity can be ensured. The rust is carefully removed before installation, and a layer of release agent is uniformly coated on the surface of the template.
2) The templates are assembled in a trial mode before use, technicians can comprehensively check and accept the conditions of large-surface flatness of the templates and dislocation of joints of the two templates, and the templates are not required to be used. After the templates are processed, the templates are classified and numbered, and the accuracy of the template use is guaranteed. During installation, a 25t truck crane is used for hoisting, after the first section of template is assembled, the template installation condition is retested, the pull rod is installed and fixed firmly, and the remaining section of templates are sequentially installed by taking the first section of template as a reference.
3) The installed templates are flat in surface, tight in seam and free of slurry exposure, and bolts for splicing the templates are screwed down to ensure the appearance quality of concrete. And after the template is installed, checking and accepting the plane position, the top elevation, the node connection and the longitudinal and transverse stability of the template.
2.2 concrete pouring
Concrete mixing and transportation
1) The concrete is intensively mixed in a mixing station, the concrete is transported by a concrete transport vehicle, and a tank body of the transport vehicle always keeps constant-speed rotation in the concrete transportation process so as to ensure that the concrete is not isolated and has good workability.
2) The field quality control of the concrete entering the mold, after the concrete arrives at the field, the concrete must be put in a trial mode before the concrete enters the mold, the quality of the concrete is strictly controlled and checked, the concrete can enter the mold after the concrete is confirmed to meet the use requirements, the concrete must be isolated without entering the mold, the concrete cannot enter the mold with poor uniformity, and the concrete cannot enter the mold when the slump is too small and too large. In order to ensure the appearance quality of the concrete, the concrete slump is strictly controlled to be 70-90 mm.
3) Concrete is put into a mould: the bucket is slowly put into the mould, the free falling height is not more than 2 meters, and the concrete is prevented from being separated. The distance between the discharge hole of the lifting hopper and the top surface of the guardrail template is about 40 cm, concrete segregation can be caused when the hopper is used for discharging materials excessively, and the hopper can collide with surrounding pull rods and templates when the hopper is too low and moves, so that the local templates are deviated and deformed, and the appearance of the concrete structure is deformed.
4) Pouring and vibrating concrete: the pouring of concrete is closely related to the vibration and complements each other. The vibrating time is short, the times are determined according to the concrete conditions of pouring, and the vibrating machine cannot vibrate early, cannot vibrate late, does not lack vibration or vibrate excessively, so as to ensure uniformity, compactness and bright and clean appearance.
5) Hierarchical segmentation
The concrete is poured and tamped, layered pouring is needed, the thickness of each layer of pouring is not more than 30cm, and the layered thickness is properly reduced at a negative slope or a chamfer angle part.
Pouring and vibrating: the pouring of concrete is to extend from one end to the other end continuously according to the layered thickness without irregular accumulation, the upper layer and the lower layer should be inclined exposed surfaces, and the pouring and vibration are linked and matched with each other, so that the early vibration cannot be realized. The early vibration is that the concrete poured on the layer is not in place or in a full range, the concrete is vibrated too early due to unclear gradation, and the early vibration is caused by the following reasons: when the cement slurry is overflowed to the lower part or edge, the uniformity of the mixture is lost, and when the concrete is poured again, more cement slurry floats upwards and is tightly close to the side mould surface to form color difference, and in addition, the excessive vibration cannot be noticed to prevent the generation of cloud scale-shaped color spots.
The movement distance of the vibrating rod is generally controlled according to 1.5 times of the action radius of the vibrating rod, and can be generally about 25 cm, so that leakage vibration can be prevented.
6) Removing the template: and when the strength of the concrete reaches 60% of the designed strength, the template starts to be dismantled, and a single template is tried to be dismantled on the construction site according to the on-site environment temperature, wherein the condition that the non-stick template does not fall off is taken as the standard. When the template is dismantled, the manual cooperation hoisting equipment is adopted for operation.
2.3 modification and health preserving
1) Wall decoration
After the form is removed, the surface defects are immediately modified, for small bubble pits, the dry ash prepared by white cement and ordinary cement can be adopted for modification, and the ratio of the white ash to the ordinary cement is generally controlled to be 1: about 3 (the blending test can be carried out in advance to ensure that the color of the blended ash powder is consistent with the color of the concrete surface), the mortar is not suitable to be mixed and coated, the original gloss of the concrete is easily lost in the process, and the modification is carried out 2 to 3 times rather than one time. For the large-area honeycomb hemp surface, lime and ordinary cement can be used, cement paste is prepared according to a proper proportion and coated, after the surface is dried, the prepared dry lime can be used for secondary decoration, the edge angle of the leakage pulp at the joint can be lightly polished and flattened by a polishing machine, then the dry lime is used for decoration, the sand line color difference, the defect parts of the cloud scale class and the like can be firstly roughened by sand paper, and then the mortar and the dry lime are used for decoration
2) Wall health preserving
After the concrete construction is finished, the earthwork cloth is adopted to cover the concrete in time, and the concrete is maintained for at least 7d, so that the strength of the concrete is improved, the shrinkage crack caused by improper maintenance is avoided, and the structural quality is ensured.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. An application of oil shale semicoke and a modified material thereof, and an application of the oil shale semicoke and the modified material thereof as a soil body reinforcing material.
2. The application of the oil shale semicoke and the modified material thereof according to claim 1, wherein the application comprises the following steps: the oil shale semi-coke and the modified material thereof are added into 32.5 cement, secondary fly ash and slaked lime to obtain the soil body curing agent.
3. The application of the oil shale semicoke and the modified material thereof according to claim 2, wherein the application comprises the following steps: the oil shale semicoke and the modified material thereof account for 15%, 10% and 5% of the soil body curing agent.
4. An application of oil shale semi-coke and a modified material thereof, and an application of the oil shale semi-coke and the modified material thereof as a cement concrete admixture.
5. The application of the oil shale semicoke and the modified material thereof according to claim 4, wherein the application comprises the following steps: and adding the oil shale semicoke and the modified material thereof into a cement concrete cementing material, and then mixing to prepare the cement concrete.
6. The application of the oil shale semicoke and the modified material thereof according to claim 5, wherein the application comprises the following steps: the oil shale semi-coke and the modified material thereof account for 20 percent of the cement concrete cementing material.
7. The application of the oil shale semicoke and the modified material thereof according to claim 5, wherein the application comprises the following steps: the cement concrete is marked with numbers C25 and C30.
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| CN114671662A (en) * | 2022-04-14 | 2022-06-28 | 甘肃路桥建设集团有限公司 | Oil shale semicoke-based soil body reinforcing material, preparation method and application thereof |
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