CN115646992A - High-strength high-performance machine-made sand concrete and production process thereof - Google Patents
High-strength high-performance machine-made sand concrete and production process thereof Download PDFInfo
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- CN115646992A CN115646992A CN202211366554.4A CN202211366554A CN115646992A CN 115646992 A CN115646992 A CN 115646992A CN 202211366554 A CN202211366554 A CN 202211366554A CN 115646992 A CN115646992 A CN 115646992A
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- 239000004567 concrete Substances 0.000 title claims abstract description 234
- 239000004576 sand Substances 0.000 title claims abstract description 108
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 123
- 239000002699 waste material Substances 0.000 claims abstract description 111
- 239000002689 soil Substances 0.000 claims abstract description 43
- 238000004140 cleaning Methods 0.000 claims abstract description 39
- 239000002023 wood Substances 0.000 claims abstract description 34
- 230000005540 biological transmission Effects 0.000 claims abstract description 29
- 238000001125 extrusion Methods 0.000 claims abstract description 6
- 239000000843 powder Substances 0.000 claims description 60
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 41
- 239000011707 mineral Substances 0.000 claims description 41
- 239000010881 fly ash Substances 0.000 claims description 34
- 239000004575 stone Substances 0.000 claims description 34
- 239000004568 cement Substances 0.000 claims description 21
- 238000002156 mixing Methods 0.000 claims description 20
- 239000003638 chemical reducing agent Substances 0.000 claims description 18
- 238000005406 washing Methods 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 15
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- 239000002253 acid Substances 0.000 description 2
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Classifications
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- 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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Abstract
The invention belongs to the technical field of concrete, in particular to high-strength high-performance machine-made sand concrete and a production process thereof; comprises a base, a hopper, a chain plate conveyor belt, an extrusion roller, a motor, a gear, a belt pulley and a belt; the two squeezing rollers are driven by the motor to rotate relatively, so that concrete waste in the hopper is squeezed downwards, the concrete waste is crushed, the crushed concrete waste falls to the top of the chain plate conveyor belt below, crushed wood in the concrete waste is in clear water in the cleaning tank, and the crushed wood floats to the surface of the clear water; meanwhile, the gear rotates to drive the belt pulley to rotate, the chain plate transmission belt is driven to rotate through belt transmission, the concrete waste is transmitted to the collecting tank, soil mixed in the concrete waste is cleaned by clear water, redundant broken wood and soil are removed, and the purity degree of the concrete waste is improved; not only improves the quality of the machine-made sand, but also reduces the probability that the soil is adhered to the inner wall of the crusher and the surface of the jaw plate.
Description
Technical Field
The invention belongs to the technical field of concrete, and particularly relates to high-strength high-performance machine-made sand concrete and a production process thereof.
Background
The concrete is the most main material in modern buildings and is mainly prepared by uniformly stirring and mixing a cementing material, water, an admixture and an additive in proportion; the concrete has the characteristics of high compressive strength, good durability, wide strength grade range and the like; with more and more engineering construction, the demand for concrete is more and more; the main component of concrete is sand aggregate.
The existing sandstone aggregate is mainly divided into natural sand and artificial sand; the natural sand is obtained by crushing and screening naturally formed stones such as pebbles, broken stones and the like; the artificial sand is machine-made sand, and is prepared by crushing, shaping, screening and other processes of the removed concrete fragments, industrial waste residues and the like; with the increasing protection of natural environment and the treatment demand of industrial waste residues and removed concrete, machine-made sand gradually becomes a main source of sandstone aggregate.
The machine-made sand is prepared from the removed concrete, and the removed concrete waste contains a large amount of crushed wood and soil, so that the machine-made sand is directly prepared, the hardness of the machine-made sand is reduced, and the quality of the prepared concrete is influenced; in addition, when the concrete waste is crushed, a large amount of soil adheres to the inner wall of the crusher and the surface of the jaw, and the crushing effect of the concrete waste is deteriorated.
Therefore, the invention provides high-strength high-performance machine-made sand concrete and a production process thereof.
Disclosure of Invention
To remedy the deficiencies of the prior art, at least one of the technical problems set forth in the background is addressed.
The technical scheme adopted by the invention for solving the technical problem is as follows: the invention relates to a production process of high-strength high-performance machine-made sand concrete, which comprises the following steps:
a1: putting the recycled concrete waste into a pretreatment device for a pretreatment process, and removing wood chips and soil mixed in the concrete waste to obtain pure concrete waste; the pretreated concrete waste removes redundant broken wood and soil, and the purity degree of the concrete waste is improved; not only improves the quality of the machine-made sand, but also reduces the probability that the soil is adhered to the inner wall of the crusher and the surface of the jaw plate;
a2: mechanically pulverizing pure concrete waste, shaping, sieving and washing to obtain concrete with apparent density of 2715kg/m 3 The fineness modulus is 2.5, the particle composition belongs to a zone II, the content of stone powder is 3.9 percent, and the MB value is 0.8;
a3: putting cement, broken stone, machine-made sand, stone powder, fly ash, mineral powder and water into a stirring tank for stirring and mixing, and adding a water reducing agent and a mud blocking agent; and preparing machine-made sand concrete.
Preferably, the pretreatment process of the pretreatment device comprises the following steps:
b1: putting the recycled concrete waste into the hopper, and driving the two squeeze rollers by a motor to squeeze and crush the concrete waste in the hopper;
b2: the crushed concrete waste falls to the top surface of the plate chain conveyor belt, clear water in the cleaning tank cleans soil in the concrete waste, and meanwhile, the mixed crushed wood floats to the water surface;
b3: the motor drives the plate chain conveyor belt to transmit through the transmission of the belt pulley and the belt, and the concrete waste falling to the top surface of the plate chain conveyor belt is transmitted to the collecting tank;
b4: and the concrete waste with the soil and the crushed wood removed falls into the hoisting net cage in the collecting tank, and after the hoisting net cage is filled, the hoisting net cage is hoisted out by using a crane to obtain pure concrete waste.
Preferably, the pretreatment device comprises a base, a hopper, a chain plate conveyor belt, an extrusion roller, a motor, a gear, a belt pulley, a belt and a lifting mesh cage; the automatic lifting device comprises a base, and is characterized in that a cleaning tank is arranged on the top surface of the base, a collecting tank is arranged at one end of the cleaning tank, a hopper is fixedly connected to the top surface of the end, away from the collecting tank, of the cleaning tank, squeezing rollers are rotatably mounted on two sides of the interior of the hopper, a motor is fixedly connected to one side of the outer wall of the hopper, a rotating shaft of the motor is fixedly connected to one end of one squeezing roller, a pair of gears is rotatably mounted on one side, away from the motor, of the outer wall of the hopper, the two gears are meshed with each other, the two gears are fixedly connected to the end portions of the two squeezing rollers respectively, a chain plate conveying belt is rotatably mounted in the cleaning tank, a plurality of through holes are uniformly formed in the chain plate conveying belt, belt pulleys are fixedly connected to one end of a driving roller of the chain plate conveying belt and the middle of one gear, belts are arranged on the outer rings of the two belt pulleys, and a lifting mesh cage is slidably mounted in the collecting tank; when the device works, recycled concrete waste is put into the hopper, the motor drives the extrusion rollers on one side to rotate and drives the gears to transmit, the two extrusion rollers rotate relatively through meshing transmission of the two gears, the concrete waste in the hopper is extruded downwards to be crushed, the crushed concrete waste falls to the top of the chain plate conveyor belt below, wood chips in the concrete waste are in clear water in the cleaning tank, and the wood chips float to the surface of the clear water; meanwhile, the gear rotates to drive the belt pulley to rotate, and the chain plate transmission belt is driven to rotate through belt transmission to transmit the concrete waste to the collecting tank, so that the falling concrete waste is dispersed on the top surface of the chain plate transmission belt, and soil mixed in the concrete waste is cleaned by clear water; the concrete waste with the soil and the crushed wood removed falls into the hoisting net cage in the collecting tank, and after the hoisting net cage is full, the hoisting net cage is hoisted out by using a crane to obtain pure concrete waste; the pretreated concrete waste removes redundant broken wood and soil, and the purity degree of the concrete waste is improved; not only improves the quality of the machine-made sand, but also reduces the probability that the soil is adhered to the inner wall of the crusher and the surface of the jaw plate.
Preferably, the two sides in the hopper are fixedly connected with a material sliding table, the material sliding table is positioned at the top of the squeeze roller, and the bottom surface of the material sliding table and the side wall of the hopper are fixedly connected with a plurality of counterattack insert blocks; during operation, when the concrete discarded object of retrieving drops into the inside of hopper, the concrete discarded object is kept off the direction by the smooth material platform for the concrete discarded object falls from the middle part of the squeeze roll of both sides, and the concrete discarded object is carried the striking counterattack and is inserted by the squeeze roll simultaneously, has improved the broken degree to the concrete discarded object, thereby has improved the effect to the shredded wood separation.
Preferably, the bottom of the cleaning tank is fixedly connected with an ash deposition supporting plate, the bottom surface of the ash deposition supporting plate is in sliding fit with an inner ring of a chain plate conveyor belt, the top surface of the ash deposition supporting plate is fixedly connected with a deep groove plate, two ends of the deep groove plate are fixedly connected with two sides of the cleaning tank respectively, a dust blocking cover is bolted to the top surface of the deep groove plate, a plurality of notches are uniformly formed in the tops of two sides of the deep groove plate, a water pump is fixedly connected to one side of the base, a water inlet end pipeline of the water pump is communicated with the inside of the deep groove plate, a U-shaped water pipe is fixedly connected to the outer ring of the top surface of the cleaning tank, a water outlet end pipeline of the water pump is communicated with the U-shaped water pipe, the inner side of the U-shaped water pipe is uniformly communicated with a plurality of high-pressure spray nozzles, and a water blowing end of the high-pressure spray nozzles is obliquely directed to the cleaning tank; when the cleaning device works, soil mixed in concrete waste falls to the top surface of the dust deposition supporting plate through the through hole of the chain plate transmission belt, the falling soil is blocked by the dust blocking cover, so that clean water in the deep groove plate is kept clean, the clean water in the deep groove plate is pumped out by the water pump, conveyed to the inside of the U-shaped water pipe through the pipeline and obliquely sprayed into the cleaning tank through the high-pressure spray nozzle, and the sprayed high-pressure water flow washes the concrete waste at the top of the chain plate transmission belt, so that the soil cleaning effect on the surface of the concrete waste is further improved; the dust-deposition supporting plate is wrapped by the chain plate conveying belt to form a relatively static annular area, so that the flow speed of water flow is reduced, and the effect of soil sedimentation is improved.
Preferably, a plurality of partition plates are uniformly and fixedly connected inside the deep groove plate, the partition plates and the notches are alternately distributed, a connecting pipe is fixedly connected to the middle parts of the partition plates, a plurality of groups of water holes are uniformly formed in the outer wall of the connecting pipe, each group of water holes corresponds to each notch, each group of water holes are uniformly formed around the connecting pipe, and the inside of the connecting pipe is communicated with the water inlet end of the water pump through a pipeline; during operation, clear water of the inner ring of the chain plate transmission belt enters the deep groove plate through the notch and is separated through the plurality of separation plates, so that the flow velocity of water flow is reduced, and the probability of soil passing through the inside of the deep groove plate is reduced.
Preferably, a plurality of cross rods are fixedly connected inside the cleaning tank, the cross rods are positioned above the chain plate conveyor belt, a plurality of inclined plates are uniformly and fixedly connected to the tops of the cross rods, and the inclined directions of the inclined plates adjacent to the top surfaces of the cross rods are opposite; during operation, when the link joint drive belt drove the concrete discarded object and conveys to the collecting vat, the concrete discarded object was blockked by the hang plate and is taken place the upset when the horizontal pole to the completion carries out the turn-over to the concrete discarded object, and the high-pressure rivers that cooperate the high pressure nozzle injection wash the concrete discarded object, have then improved the abluent comprehensiveness of concrete discarded object.
Preferably, a cross beam is fixedly connected to the top between the cleaning tank and the collecting tank, a plurality of rubber sheets are uniformly bolted to one side of the cross beam close to the cleaning tank, reinforcing elastic sheets are fixedly connected to the outer walls of the rubber sheets, and a plurality of elastic strips are arranged at the bottoms of the reinforcing elastic sheets; during operation, when concrete waste fell into the collecting vat for the sheet rubber with strengthen the shell fragment and to the collecting vat bending, make concrete waste fall into the inside of handling cylinder mould, simultaneously, the sheet rubber blockked that the showy garrulous wood in the washing tank gets into inside the collecting vat.
Preferably, the chain plate conveying belt is formed by hinging a plurality of chain plates end to end, a plurality of through holes are uniformly formed in the top surfaces of the chain plates, a mounting groove is formed in one end of each chain plate, a sliding plate is slidably mounted in the mounting groove, a plurality of connecting holes are uniformly formed in the sliding plate and correspond to the through holes one to one, a rotating rod is rotatably mounted at one corner in the mounting groove and penetrates through the top wall of each chain plate, a gear ring is fixedly connected to the outer ring of the rotating rod, a straight rack is fixedly connected to one side, close to the rotating rod, of the sliding plate, the gear ring is meshed with the straight rack, a cover plate is bolted to an opening of the mounting groove, and a taper block is uniformly and fixedly connected to the top surfaces of the chain plates; the during operation rotates the bull stick, and it is rotatory to drive the ring gear, and the straight rack that the drive was meshed with it removes, drives the slide and slides in the inside of mounting groove for connecting hole on the slide misplaces with the through-hole on the link joint, thereby the size of control link joint conveyer belt through-hole, then the efficiency that control earth passed through the link joint conveyer belt.
The machine-made sand concrete is prepared by adopting the production process of the machine-made sand concrete, and the machine-made sand concrete is prepared from the following raw materials in parts by weight:
cement 178-235
Crushed stone 800-1000
Machine-made sand 700-800
100-150% stone powder
15-59 parts of fly ash
0-59 parts of mineral powder
2-2.5 parts of water reducing agent
2-2.5% of mud inhibitor
150-200 parts of water;
the cement is silicate cement, the compressive strengths of 3d and 28d are respectively 26.1, 43.7MPa, the flexural strengths of 3d and 28d are respectively 5.2 and 7.9MPa; crushed stone, wherein the crushed stone with the thickness of 5-15 mm accounts for 40 percent, the crushed stone with the thickness of 15-25 mm accounts for 60 percent, the aggregate type is II, and the apparent density is 2695 kg/m 3 (ii) a The fly ash is II grade, siO 2 53.5 percent of content and 380m of specific surface area 2 Per kg, water content 0.32%, activity index 67.9%; the water reducing agent is a polycarboxylic acid water reducing agent, and the water reducing rate is 30%.
The invention has the following beneficial effects:
1. the invention relates to a high-strength high-performance machine-made sand concrete and a production process thereof, wherein a hopper, a chain plate conveyor belt, an extrusion roller, a motor, a gear, a belt pulley and a belt are arranged; the recycled concrete waste is put into the hopper, the two squeezing rollers are driven by the motor to rotate relatively, the concrete waste in the hopper is squeezed downwards, the concrete waste is crushed, the crushed concrete waste falls to the top of the chain plate conveyor belt below, crushed wood in the concrete waste is in clear water in the cleaning tank, and the crushed wood floats to the surface of the clear water; meanwhile, the gear rotates to drive the belt pulley to rotate, the chain plate transmission belt is driven to rotate through belt transmission, the concrete waste is transmitted to the collecting tank, meanwhile, the falling concrete waste is dispersed on the top surface of the chain plate transmission belt, and soil mixed in the concrete waste is cleaned by clear water; the pretreated concrete waste removes redundant broken wood and soil, and the purity degree of the concrete waste is improved; not only improves the quality of the machine-made sand, but also reduces the probability that the soil is adhered to the inner wall of the crusher and the surface of the jaw plate.
2. According to the high-strength high-performance machine-made sand concrete and the production process thereof, through increasing of the mixing amount of the mineral powder, the slump and the expansion degree of the machine-made sand concrete are gradually increased, the fluidity of the concrete is increased after being reduced, the fluidity is improved, the cohesiveness of a mixture is better, the compressive strength is reduced after being improved, and when the mixing amount of the mineral powder is 10%, the compressive strength of the machine-made sand concrete is highest; the fluidity of machine-made sand concrete is continuously increased due to the increase of the mixing amount of the fly ash; the addition of the fly ash and the mineral powder is beneficial to improving the fluidity of the machine-made sand concrete; the mixing amount of the mineral powder is increased, and the early compressive strength and the flexural strength of the machine-made sand concrete are improved; the mixing amount of the fly ash is increased, and the early strength of the machine-made sand concrete is reduced; along with the increasing of the mixing amount of the mineral powder, the fluidity of the concrete is reduced firstly and then increased.
Drawings
The invention will be further described with reference to the accompanying drawings.
FIG. 1 is a perspective view of a pretreatment device of the present invention;
FIG. 2 is a cross-sectional view of a pretreatment device of the present invention;
FIG. 3 is an exploded view of the pretreatment device of the present invention;
FIG. 4 is a cross-sectional view of a hopper according to the present invention;
FIG. 5 is a cross-sectional view of the deep well plate of the present invention;
FIG. 6 is an exploded view of the deep well plate of the present invention;
FIG. 7 is a block diagram of the cross bar and tilt plate of the present invention;
FIG. 8 is a structural view of a rubber sheet and a reinforcing elastic sheet in the present invention;
fig. 9 is a perspective view of a link plate in the present invention;
fig. 10 is an exploded view of a link plate of the present invention;
FIG. 11 is a flow chart of the production process of the present invention;
FIG. 12 is a flow diagram of a pretreatment process of the present invention;
in the figure: 1. a base; 2. a hopper; 3. a chain plate conveyor belt; 4. a squeeze roll; 5. a motor; 6. a gear; 7. a pulley; 8. a belt; 9. hoisting a cylinder mould; 10. a material sliding table; 11. counterattack inserts; 12. a dust-deposition supporting plate; 13. a deep groove plate; 14. a dust-blocking cover; 15. a notch; 16. a water pump; 17. a U-shaped water pipe; 18. a high pressure spray head; 19. a partition plate; 20. a connecting pipe; 21. a water pore; 22. a cross bar; 23. an inclined plate; 24. a cross beam; 25. a rubber sheet; 26. reinforcing the elastic sheet; 27. a chain plate; 28. mounting grooves; 29. a slide plate; 30. a rotating rod; 31. a ring gear; 32. a spur rack; 33. a cover plate; 34. and (5) a conical block.
Detailed Description
The present invention is further described in order to make the technical means, the creation features, the achievement purposes and the effects of the present invention easy to understand.
As shown in fig. 11, a production process of high-strength high-performance machine-made sand concrete comprises the following steps:
a1: putting the recycled concrete waste into a pretreatment device for carrying out a pretreatment process, and removing crushed wood and soil mixed in the concrete waste to obtain pure concrete waste; the concrete waste after pretreatment has the advantages that redundant broken wood and soil are removed, and the purity degree of the concrete waste is improved; not only improves the quality of the machine-made sand, but also reduces the probability that the soil is adhered to the inner wall of the crusher and the surface of the jaw plate;
a2: mechanically crushing the pure concrete waste,Shaping, sieving and washing to obtain product with apparent density of 2715kg/m 3 The fineness modulus is 2.5, the particle composition belongs to a zone II, the content of stone powder is 3.9 percent, and the MB value is 0.8;
a3: putting cement, broken stone, machine-made sand, stone powder, fly ash, mineral powder and water into a stirring tank for stirring and mixing, and adding a water reducing agent and a mud blocking agent; and (5) preparing machine-made sand concrete.
As shown in fig. 12, the pretreatment process of the pretreatment device includes the steps of:
b1: the recycled concrete waste is put into the hopper 2, and the motor 5 drives the two squeeze rollers 4 to squeeze and crush the concrete waste in the hopper 2;
b2: the crushed concrete waste falls on the top surface of the plate chain conveyor belt 3, clear water in the cleaning tank cleans soil in the concrete waste, and meanwhile, the mixed crushed wood floats to the water surface;
b3: the motor 5 drives the plate chain conveyor belt 3 to drive through the transmission of a belt pulley 7 and a belt 8, and the concrete waste falling to the top surface of the plate chain conveyor belt 3 is driven to the collecting tank;
b4: the concrete waste with the soil and the crushed wood removed falls into the hoisting net cage 9 in the collecting tank, and after the hoisting net cage 9 is filled, the hoisting net cage 9 is hoisted out by using a crane to obtain pure concrete waste.
As shown in fig. 1 to 3, the pretreatment device comprises a base 1, a hopper 2, a chain scraper conveyor belt 3, a squeezing roller 4, a motor 5, a gear 6, a belt pulley 7, a belt 8 and a lifting net cage 9; the cleaning device comprises a base 1, and is characterized in that a cleaning tank is arranged on the top surface of the base 1, a collecting tank is arranged at one end of the cleaning tank, a hopper 2 is fixedly connected to the top surface of the end, away from the collecting tank, of the cleaning tank, squeezing rollers 4 are rotatably mounted on both sides of the interior of the hopper 2, a motor 5 is fixedly connected to one side of the outer wall of the hopper 2, a rotating shaft of the motor 5 is fixedly connected to one end of one squeezing roller 4, a pair of gears 6 is rotatably mounted on one side, away from the motor 5, of the outer wall of the hopper 2, the two gears 6 are meshed with each other, the two gears 6 are respectively fixedly connected to the end portions of the two squeezing rollers 4, a chain plate conveyor belt 3 is rotatably mounted in the cleaning tank, a plurality of through holes are uniformly formed in the chain plate conveyor belt 3, belt pulleys 7 are fixedly connected to one end of a transmission roller of the chain plate conveyor belt 3 and the middle portion of one gear 6, belts 8 are arranged on the outer rings of the two belt pulleys 7, and a lifting cage 9 is slidably mounted in the collecting tank; when the device works, recycled concrete waste is put into the hopper 2, the motor 5 drives the squeeze rollers 4 on one side to rotate to drive the gears 6 to transmit, the two squeeze rollers 4 rotate relatively through meshing transmission of the two gears 6, the concrete waste in the hopper 2 is squeezed downwards to be crushed, the crushed concrete waste falls to the top of the chain plate conveyor belt 3 below, wood chips in the concrete waste are in clear water in the cleaning tank, and the wood chips float to the surface of the clear water; meanwhile, the gear 6 rotates to drive the belt pulley 7 to rotate, the chain plate transmission belt 3 is driven to rotate through the transmission of the belt 8, the concrete waste is transmitted to the collecting tank, meanwhile, the falling concrete waste is dispersed on the top surface of the chain plate transmission belt 3, and soil mixed in the concrete waste is cleaned by clean water; the concrete waste with the soil and the broken wood removed falls into the lifting net cage 9 in the collecting tank, and after the lifting net cage 9 is filled, the lifting net cage 9 is lifted out by a crane to obtain pure concrete waste; the pretreated concrete waste removes redundant broken wood and soil, and the purity degree of the concrete waste is improved; not only improves the quality of the machine-made sand, but also reduces the probability that the soil is adhered to the inner wall of the crusher and the surface of the jaw plate.
As shown in fig. 4, a material sliding table 10 is fixedly connected to both sides of the interior of the hopper 2, the material sliding table 10 is located at the top of the squeeze roll 4, and a plurality of counterattack insert blocks 11 are fixedly connected to the bottom surface of the material sliding table 10 and the side wall of the hopper 2; during operation, when the concrete discarded object of retrieving drops into the inside of hopper 2, the concrete discarded object is blockked the direction by smooth material platform 10 for the concrete discarded object falls down from the middle part of the squeeze roll 4 of both sides, and the concrete discarded object is carried the striking counterattack by squeeze roll 4 and is inserted 11 simultaneously, has improved the crushing degree to the concrete discarded object, thereby has improved the effect to the shredded wood separation.
As shown in fig. 1, fig. 2, fig. 3, fig. 5, and fig. 6, an ash deposition supporting plate 12 is fixedly connected to the bottom of the cleaning tank, the bottom surface of the ash deposition supporting plate 12 is in sliding fit with the inner ring of the chain plate conveyor belt 3, a deep groove plate 13 is fixedly connected to the top surface of the ash deposition supporting plate 12, two ends of the deep groove plate 13 are fixedly connected to two sides of the cleaning tank respectively, a dust blocking cover 14 is bolted to the top surface of the deep groove plate 13, a plurality of notches 15 are uniformly formed in the tops of two sides of the deep groove plate 13, a water pump 16 is fixedly connected to one side of the base 1, a water inlet end pipeline of the water pump 16 is communicated with the inside of the deep groove plate 13, a U-shaped water pipe 17 is fixedly connected to the outer ring of the top surface of the cleaning tank, a water outlet end pipeline of the water pump 16 is communicated with the U-shaped water pipe 17, a plurality of high-pressure spray nozzles 18 are uniformly communicated to the inner side of the U-shaped water pipe 17, and a water blowing end of the high-pressure spray nozzle 18 is inclined and directed to the cleaning tank; during operation, soil mixed in concrete waste falls to the top surface of the dust deposition supporting plate 12 through the through holes of the chain plate transmission belt 3, the falling soil is blocked by the dust blocking cover 14, so that clean water in the deep groove plate 13 is kept clean, the water pump 16 pumps out the clean water in the deep groove plate 13, the clean water is conveyed to the inside of the U-shaped water pipe 17 through a pipeline and is obliquely sprayed into the cleaning tank through the high-pressure spray head 18, and the sprayed high-pressure water flow washes the concrete waste at the top of the chain plate transmission belt 3, so that the soil cleaning effect on the surface of the concrete waste is further improved; the dust-deposition supporting plate 12 is wrapped by the chain plate conveying belt 3 to form a relatively static annular area, so that the flow speed of water flow is reduced, and the effect of soil sedimentation is improved.
As shown in fig. 5 to 6, a plurality of partition plates 19 are uniformly and fixedly connected inside the deep groove plate 13, the plurality of partition plates 19 and the notches 15 are alternately distributed, a connecting pipe 20 is fixedly connected to the middle of the plurality of partition plates 19, a plurality of groups of water holes 21 are uniformly formed in the outer wall of the connecting pipe 20, each group of water holes 21 corresponds to the notch 15, each group of water holes 21 is uniformly formed around the connecting pipe 20, and the inside of the connecting pipe 20 is communicated with the water inlet end of the water pump 16 through a pipeline; during operation, the clear water of 3 inner circles of link joint drive belt passes through notch 15 and gets into deep troughed board 13's inside, separates through a plurality of division boards 19, has reduced the velocity of flow, has reduced earth through the inside probability of deep troughed board 13.
As shown in fig. 3 and 7, a plurality of cross bars 22 are fixedly connected inside the cleaning tank, the cross bar 22 is located above the link plate conveyor belt 3, a plurality of inclined plates 23 are uniformly fixedly connected to the top of the cross bar 22, and the inclined directions of the inclined plates 23 adjacent to the top surface of the cross bar 22 are opposite; during operation, when link joint drive belt 3 drove the concrete discarded object and conveys to the collecting vat, the concrete discarded object is blockked by hang plate 23 and takes place the upset when horizontal pole 22 to the completion carries out the turn-over to the concrete discarded object, and the high pressure rivers that cooperate the 18 sprays of high pressure nozzle wash the concrete discarded object, have then improved the abluent comprehensiveness of concrete discarded object.
As shown in fig. 3 and 8, a cross beam 24 is fixedly connected to the top between the cleaning tank and the collecting tank, a plurality of rubber sheets 25 are uniformly bolted to one side of the cross beam 24 close to the cleaning tank, a reinforcing elastic sheet 26 is fixedly connected to the outer wall of each rubber sheet 25, and a plurality of elastic strips are arranged at the bottom of each reinforcing elastic sheet 26; during operation, when the concrete discarded object fell into the collecting vat, make the sheet rubber 25 and strengthen the shell fragment 26 to the collecting vat bending for the concrete discarded object falls into the inside of handling cylinder mould 9, and simultaneously, the sheet rubber 25 blocks that the showy garrulous wood in the washing tank gets into inside the collecting vat.
As shown in fig. 9 and 10, the chain plate conveyor belt 3 is formed by hinging a plurality of chain plates 27 end to end, a plurality of through holes are uniformly formed in the top surface of each chain plate 27, a mounting groove 28 is formed in one end of each chain plate 27, a sliding plate 29 is slidably mounted inside the mounting groove 28, a plurality of connecting holes are uniformly formed in the sliding plate 29 and correspond to the through holes one by one, a rotating rod 30 is rotatably mounted at one corner inside the mounting groove 28, the rotating rod 30 is rotatably penetrated through the top wall of each chain plate 27, a gear ring 31 is fixedly connected to the outer ring of the rotating rod 30, a spur rack 32 is fixedly connected to one side, close to the rotating rod 30, of the sliding plate 29, the gear ring 31 is meshed with the spur rack 32, a cover plate 33 is bolted to the opening of the mounting groove 28, and a taper block 34 is fixedly connected to the top surface of each chain plate 27; in operation, the rotating rod 30 is rotated to drive the gear ring 31 to rotate, and the spur rack 32 meshed with the gear ring is driven to move, so that the sliding plate 29 is driven to slide in the mounting groove 28, the connecting holes in the sliding plate 29 are staggered with the through holes in the chain plates 27, the size of the through holes in the chain plate conveying belt 3 is controlled, and the efficiency of soil passing through the chain plate conveying belt 3 is controlled.
The machine-made sand concrete is prepared by adopting the production process of the machine-made sand concrete, and the machine-made sand concrete is prepared from the following raw materials in parts by weight:
cement 178-235
Crushed stone 800-1000
Machine-made sand 700-800
100-150% stone powder
15-59 parts of fly ash
0-59 parts of mineral powder
2-2.5 of water reducing agent
2-2.5% of mud inhibitor
150-200 parts of water;
the cement is silicate cement, the compressive strengths of 3d and 28d are respectively 26.1 MPa, 43.7MPa, the flexural strengths of 3d and 28d are respectively 5.2 MPa and 7.9MPa; crushed stone, wherein the crushed stone with the thickness of 5-15 mm accounts for 40 percent, the crushed stone with the thickness of 15-25 mm accounts for 60 percent, the aggregate type is II, and the apparent density is 2695 kg/m 3 (ii) a The fly ash is II grade, siO 2 The content is 53.5 percent, and the specific surface area is 380m 2 Kg, water content 0.32%, activity index 67.9%; the water reducing agent is a polycarboxylic acid water reducing agent, and the water reducing rate is 30%.
Example 1
The embodiment of the invention provides high-strength high-performance machine-made sand concrete which is prepared from the following raw materials in parts by weight:
cement 235
Macadam 982
Machine-made sand 804
Stone powder 135
Fly ash 59
Water reducing agent 2.2
Mud retarder 2.2
Water 171;
in the embodiment, the machine-made sand concrete is prepared by adopting the production process of the high-strength high-performance machine-made sand concrete; the prepared machine-made sand concrete is subjected to performance detection, and the detection results are shown in the following table 1.
Example 2
The embodiment of the invention provides high-strength high-performance machine-made sand concrete which is prepared from the following raw materials in parts by weight:
cement 221.1
Gravel 979
Mechanism sand 802
Stone powder 135
Fly ash 59
14.7 parts of ore fines
Water reducing agent 2.2
Mud inhibitor 2.2
Water 171;
in the embodiment, the machine-made sand concrete is prepared by adopting the production process of the high-strength high-performance machine-made sand concrete; the prepared machine-made sand concrete is subjected to performance detection, and the detection results are shown in the following table 1.
Example 3
The embodiment of the invention provides high-strength high-performance machine-made sand concrete which is prepared from the following raw materials in parts by weight:
cement 205.4
976 macadam
Machine-made sand 800
Stone powder 135
Fly ash 59
29.5 parts of mineral powder
Water reducing agent 2.2
Mud inhibitor 2.2
Water 171;
the machine-made sand concrete in the implementation is prepared by adopting the production process of the high-strength high-performance machine-made sand concrete; the prepared machine-made sand concrete is subjected to performance detection, and the detection result is shown in the following table 1.
Example 4
The embodiment of the invention provides high-strength high-performance machine-made sand concrete which is prepared from the following raw materials in parts by weight:
190.6 Cement
Macadam 973
Machine-made sand 798
Stone powder 135
Fly ash 59
44.2 part of ore fines
Water reducing agent 2.2
Mud inhibitor 2.2
Water 171;
the machine-made sand concrete in the implementation is prepared by adopting the production process of the high-strength high-performance machine-made sand concrete; the prepared machine-made sand concrete is subjected to performance detection, and the detection result is shown in the following table 1.
Example 5
The embodiment of the invention provides high-strength high-performance machine-made sand concrete which is prepared from the following raw materials in parts by weight:
cement 178.0
Broken stone 970
Mechanism sand 796
Stone powder 135
Fly ash 59
58.0 parts of mineral powder
Water reducing agent 2.2
Mud inhibitor 2.2
Water 171;
the machine-made sand concrete in the implementation is prepared by adopting the production process of the high-strength high-performance machine-made sand concrete; the prepared machine-made sand concrete is subjected to performance detection, and the detection results are shown in the following table 1.
Example 6
The embodiment of the invention provides high-strength high-performance machine-made sand concrete which is prepared from the following raw materials in parts by weight:
cement 221.5
Gravel 979
Mechanism sand 802
Stone powder 135
15.0% of fly ash
58.0 parts of mineral powder
Water reducing agent 2.2
Mud inhibitor 2.2
Water 171;
the machine-made sand concrete in the implementation is prepared by adopting the production process of the high-strength high-performance machine-made sand concrete; the prepared machine-made sand concrete is subjected to performance detection, and the detection result is shown in the following table 1.
Example 7
The embodiment of the invention provides high-strength high-performance machine-made sand concrete which is prepared from the following raw materials in parts by weight:
191.0% of cement
Macadam 973
Machine-made sand 798
Stone powder 135
42.5 fly ash
58.0 parts of mineral powder
Water reducing agent 2.2
Mud inhibitor 2.2
Water 171;
the machine-made sand concrete in the implementation is prepared by adopting the production process of the high-strength high-performance machine-made sand concrete; the prepared machine-made sand concrete is subjected to performance detection, and the detection results are shown in the following table 1.
Table 1: test results of working performance and strength of machine-made sand concrete
As can be seen from the above table:
(1) Under the condition of certain parameters of the fly ash, after the mineral powder is doped, the slump and the expansion degree of the machine-made sand concrete are increased, the fluidity of the concrete is improved, and meanwhile, the cohesiveness of a mixture is also changed from general good; the surface characteristics of the mineral powder particles are mainly determined, the mineral powder particles are spherical, the appearance of the mineral powder particles is smoother than that of cement, and water molecules are difficult to adsorb, so that the performance is relatively stable. After the mineral powder is doped, the grain composition of each grain diameter of the system is more reasonable, the micro-aggregate effect generated by the mineral powder and the grain shape effect generated by the fly ash reduce the gaps among the powder, and ensure the fluidity of the concrete, thereby playing the role of improving the workability of the concrete, being beneficial to reducing the pumping resistance of the concrete and enhancing the working performance of the concrete; the mineral powder and fly ash compound doping technology can solve the problem that the workability and the pumpability of low-stone powder high-strength machine-made sand concrete cannot meet the requirement of high-performance concrete; because the price of the mineral powder and the fly ash is low, the mineral powder and fly ash compound doping technology is economical and feasible.
(2) When the using amount of the mineral powder is 58.0kg, the mixing amount of the fly ash is increased from 15.0 to 59kg, the slump and the expansion degree of the concrete are in an increasing trend, the slump is increased from 201mm to 225mm, and the expansion degree is increased from 416mm to 445mm, so that the requirements of the high-performance concrete are met; this is because the mixed mineral powder and fly ash will produce an interactive effect when they are used as admixture. When the mixing amount of the mineral powder is not more than 10%, the compressive strength of the machine-made sand concrete is gradually improved, mainly the mixing amount of the mineral powder can promote cement to generate secondary hydration reaction to generate CSH and CH, wherein the CH and gypsum in the cement can further stimulate the hydration of the mineral powder and fly ash, the mineral powder has higher hydration activity and surface energy than the fly ash, the reaction speed is high, CSH gel can be increased, ca < 2+ > separated out from the mineral powder can promote the formation of CSH gel around fly ash particles, and due to the dissolution of aluminum and silicon phases in the fly ash particles, the concentrations of aluminum and silicon in a hydration liquid phase can be increased, the hydration process of the mineral powder can be increased, and the interface structure between aggregate and a cement matrix is further improved; meanwhile, the fine mineral powder particles can fill micro pores formed after cement hydration, so that a concrete structure is more compact, and the compressive strength is favorably improved.
When 58kg of mineral powder and 59kg of fly ash are respectively added into concrete, the working performance of the machine-made sand concrete reaches the best, the slump and the expansion degree are respectively 225mm and 445mm, the pumping performance is good, and the strength meets the requirement.
With the increase of the mixing amount of the mineral powder, the slump and the expansion degree of the machine-made sand concrete are gradually increased, the fluidity of the concrete is increased after being reduced, the fluidity is improved, the cohesiveness of the mixture is better, the compressive strength is reduced after being improved, and the compressive strength of the machine-made sand concrete is highest when the mixing amount of the mineral powder is 10%; the increase of the mixing amount of the fly ash leads to the continuous increase of the fluidity of machine-made sand concrete; the addition of the fly ash and the mineral powder is beneficial to improving the fluidity of the machine-made sand concrete; the mixing amount of the mineral powder is increased, so that the early compressive strength and the flexural strength of the machine-made sand concrete are improved; the mixing amount of the fly ash is increased, and the early strength of the machine-made sand concrete is reduced; along with the increasing of the mixing amount of the mineral powder, the fluidity of the concrete is reduced firstly and then increased.
When in work: the rotating rod 30 is rotated to drive the gear ring 31 to rotate, the straight rack 32 meshed with the gear ring is driven to move, the sliding plate 29 is driven to slide in the mounting groove 28, the connecting hole in the sliding plate 29 is staggered with the through hole in the chain plate 27, and the size of the through hole of the chain plate conveyor belt 3 is controlled;
the recycled concrete waste is thrown into the hopper 2, the concrete waste is blocked and guided by the sliding table 10, so that the concrete waste falls from the middle parts of the squeeze rollers 4 on two sides, the motor 5 drives the squeeze roller 4 on one side to rotate and drives the gear 6 to transmit, and the two squeeze rollers 4 rotate relatively through the meshing transmission of the two gears 6, so that the concrete waste in the hopper 2 is squeezed downwards, the concrete waste is crushed, the concrete waste is carried by the squeeze rollers 4 to impact the counterattack insert 11, and the crushing degree of the concrete waste is improved; the crushed concrete waste falls to the top of the chain plate conveyor belt 3 below, crushed wood in the concrete waste is in clear water in the cleaning tank, and the crushed wood floats to the surface of the clear water; meanwhile, the gear 6 rotates to drive the belt pulley 7 to rotate, and the chain plate transmission belt 3 is driven to rotate through the transmission of the belt 8, so that the concrete waste is transmitted to the collecting tank, meanwhile, the falling concrete waste is dispersed on the top surface of the chain plate transmission belt 3, and soil mixed in the concrete waste is cleaned by clean water; soil falls downwards to the top surface of the dust deposition supporting plate 12 through the through hole of the chain plate transmission belt 3, the falling soil is blocked by the dust blocking cover 14, so that clean water in the deep groove plate 13 is kept clean, the clean water in the deep groove plate 13 is pumped out by the water pump 16 and is conveyed to the inside of the U-shaped water pipe 17 through a pipeline, the clean water is obliquely sprayed into the cleaning tank through the high-pressure spray head 18, and the sprayed high-pressure water flow washes concrete waste at the top of the chain plate transmission belt 3;
when the chain plate transmission belt 3 drives the concrete waste to be transmitted to the collecting tank, the concrete waste is blocked by the inclined plate 23 to turn over when passing through the cross rod 22, so that the concrete waste is turned over, and the concrete waste is cleaned by matching with high-pressure water flow sprayed by the high-pressure spray head 18, so that the cleaning comprehensiveness of the concrete waste is improved; when concrete waste falls into the collecting tank, the rubber sheets 25 and the reinforcing elastic sheets 26 are bent towards the collecting tank, so that the concrete waste falls into the hoisting cylinder mould 9, and meanwhile, the rubber sheets 25 prevent crushed wood floating in the cleaning tank from entering the collecting tank; the concrete waste with the soil and the broken wood removed falls into the lifting net cage 9 in the collecting tank, and after the lifting net cage 9 is filled, the lifting net cage 9 is lifted out by a crane to obtain pure concrete waste;
mechanically crushing, shaping, screening and washing the pure concrete waste to prepare machine-made sand; putting cement, broken stone, machine-made sand, stone powder, fly ash, mineral powder and water into a stirring tank for stirring and mixing, and adding a water reducing agent and a mud blocking agent; and preparing machine-made sand concrete.
The front, the back, the left, the right, the upper and the lower are all based on figure 1 in the attached drawings of the specification, according to the standard of the observation angle of a person, the side of the device facing an observer is defined as the front, the left side of the observer is defined as the left, and the like.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are merely intended to facilitate the description of the present invention and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the scope of the present invention.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. A production process of high-strength high-performance machine-made sand concrete is characterized by comprising the following steps: the production process comprises the following steps:
a1: putting the recycled concrete waste into a pretreatment device for a pretreatment process, and removing wood chips and soil mixed in the concrete waste to obtain pure concrete waste;
a2: mechanically pulverizing pure concrete waste, shaping, sieving and washing to obtain concrete with apparent density of 2715kg/m 3 The fineness modulus is 2.5, the particle composition belongs to a zone II, the content of stone powder is 3.9 percent, and the MB value is 0.8;
a3: putting cement, broken stone, machine-made sand, stone powder, fly ash, mineral powder and water into a stirring tank for stirring and mixing, and adding a water reducing agent and a mud blocking agent; and (5) preparing machine-made sand concrete.
2. The production process of the high-strength high-performance machine-made sand concrete as claimed in claim 1, wherein the production process comprises the following steps: the pretreatment process of the pretreatment device comprises the following steps:
b1: the recycled concrete waste is put into the hopper (2), and the motor (5) drives the two squeeze rollers (4) to squeeze and crush the concrete waste in the hopper (2);
b2: the crushed concrete waste falls to the top surface of the plate chain conveyor belt (3), clear water in the cleaning tank cleans soil in the concrete waste, and meanwhile, the mixed crushed wood floats to the water surface;
b3: the motor (5) drives the plate chain conveyor belt (3) to transmit through the transmission of the belt pulley (7) and the belt (8), and the concrete waste falling to the top surface of the plate chain conveyor belt (3) is transmitted to the collecting tank;
b4: and (3) the concrete waste with the soil and the broken wood removed falls into the hoisting net cage (9) in the collecting tank, and after the hoisting net cage (9) is filled with the concrete waste, the hoisting net cage (9) is hoisted out by using a crane to obtain pure concrete waste.
3. The production process of the high-strength high-performance machine-made sand concrete as claimed in claim 2, wherein the production process comprises the following steps: the pretreatment device comprises a base (1), a hopper (2), a chain plate conveyor belt (3), an extrusion roller (4), a motor (5), a gear (6), a belt pulley (7), a belt (8) and a lifting mesh cage (9); the washing tank has been seted up to the top surface of base (1), the collecting vat has been seted up to the one end of washing tank, the one end top surface rigid coupling that the collecting vat was kept away from to the washing tank has hopper (2), the inside both sides of hopper (2) are all rotated and are installed squeeze roll (4), outer wall one side rigid coupling of hopper (2) has motor (5), the pivot of motor (5) and the one end rigid coupling of a squeeze roll (4), one side rotation of motor (5) is kept away from to the outer wall of hopper (2) is installed a pair of gear (6), two mesh between gear (6), two gear (6) respectively with the tip rigid coupling of two squeeze rolls (4), link joint conveyer belt (3) is installed in the internal rotation of washing tank, a plurality of through-holes have evenly been seted up on link joint conveyer belt (3), the equal rigid coupling in middle part of the driving roller one end of link joint conveyer belt (3) and a gear (6) has belt pulley (7), two the outer lane of belt pulley (7) is provided with belt (8), the internal sliding mounting of collecting vat has net cage (9).
4. The production process of the high-strength high-performance machine-made sand concrete as claimed in claim 3, wherein the production process comprises the following steps: the material sliding table is characterized in that material sliding tables (10) are fixedly connected to two inner sides of the hopper (2), the material sliding tables (10) are located at the tops of the squeeze rollers (4), and a plurality of counterattack inserts (11) are fixedly connected to the bottom surface of each material sliding table (10) and the side wall of the hopper (2).
5. The production process of the high-strength high-performance machine-made sand concrete as claimed in claim 3, wherein the production process comprises the following steps: the bottom rigid coupling of washing tank has deposition layer board (12), the bottom surface of deposition layer board (12) and the inner circle sliding fit of link joint conveyer belt (3), the top surface rigid coupling of deposition layer board (12) has dark frid (13), the both ends of dark frid (13) respectively with the both sides rigid coupling of washing tank, the top surface bolt joint of dark frid (13) hinders dirt lid (14), a plurality of notch (15) have evenly been seted up at the both sides top of dark frid (13), one side rigid coupling of base (1) has water pump (16), the inside of the deep frid (13) of intake end pipeline intercommunication of water pump (16), the top surface outer lane rigid coupling of washing tank has U-shaped water pipe (17), the outlet end pipeline intercommunication U-shaped water pipe (17) of water pump (16), the inboard even intercommunication of U-shaped water pipe (17) has a plurality of high pressure nozzle (18), the directional washing tank of the end slope of high pressure nozzle (18).
6. The production process of the high-strength high-performance machine-made sand concrete as claimed in claim 5, wherein the production process comprises the following steps: the even rigid coupling in inside of deep troughed board (13) has a plurality of division boards (19), and is a plurality of division board (19) and notch (15) alternate distribution, and is a plurality of the middle part rigid coupling of division board (19) has connecting pipe (20), multiunit water hole (21) have evenly been seted up to the outer wall of connecting pipe (20), and every group water hole (21) are corresponding with notch (15), every group water hole (21) encircle connecting pipe (20) and evenly set up, the end of intaking of pipeline intercommunication water pump (16) is passed through to the inside of connecting pipe (20).
7. The production process of the high-strength high-performance machine-made sand concrete as claimed in claim 3, wherein the production process comprises the following steps: the inside rigid coupling of washing tank has a plurality of horizontal poles (22), horizontal pole (22) are located the top of link joint conveyer belt (3), the even rigid coupling in top of horizontal pole (22) has a plurality of hang plates (23), and is adjacent the slope opposite direction of hang plate (23) of horizontal pole (22) top surface.
8. The production process of the high-strength high-performance machine-made sand concrete as claimed in claim 3, wherein the production process comprises the following steps: the top rigid coupling between washing tank and the collecting vat has crossbeam (24), crossbeam (24) are close to even bolt joint in one side of washing tank and have a plurality of sheet rubbers (25), the outer wall rigid coupling of sheet rubber (25) has enhancement shell fragment (26), the bottom of strengthening shell fragment (26) is a plurality of elastic strips.
9. The production process of the high-strength high-performance machine-made sand concrete as claimed in claim 3, wherein the production process comprises the following steps: link joint conveyer belt (3) are formed by a plurality of link joints (27) end to end hinge, a plurality of through-holes have evenly been seted up to the top surface of link joint (27), mounting groove (28) have been seted up to the one end of link joint (27), the inside slidable mounting of mounting groove (28) has slide (29), a plurality of connecting holes have evenly been seted up on slide (29), a plurality of connecting holes and a plurality of through-hole one-to-one, bull stick (30) are installed in the rotation of the inside one corner of mounting groove (28), bull stick (30) rotate the roof that runs through link joint (27), the outer lane rigid coupling of bull stick (30) has ring gear (31), one side rigid coupling that slide (29) are close to bull stick (30) has spur rack (32), ring gear (31) and spur rack (32) meshing, the opening part of mounting groove (28) has been bolted connection apron (33), the even rigid coupling of top surface of link joint (27) has awl piece (34).
10. The utility model provides a high strength high performance machine-made sand concrete which characterized in that: the machine-made sand concrete is prepared by the production process of the high-strength high-performance machine-made sand concrete as claimed in any one of claims 1 to 9, and the machine-made sand concrete is prepared from the following raw materials in parts by weight:
cement 178-235
Crushed stone 800-1000
Machine-made sand 700-800
100-150% stone powder
15-59 parts of fly ash
0-59 parts of mineral powder
2-2.5 parts of water reducing agent
2-2.5% of mud inhibitor
150-200 parts of water.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117208591A (en) * | 2023-09-15 | 2023-12-12 | 中铁建工集团有限公司 | Continuous soil discharging equipment for ultra-large deep foundation pit construction |
| CN117697961A (en) * | 2023-12-08 | 2024-03-15 | 武汉百俊同建材有限公司 | Machine-made sand concrete production line and use method |
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| CN117697961A (en) * | 2023-12-08 | 2024-03-15 | 武汉百俊同建材有限公司 | Machine-made sand concrete production line and use method |
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