CN109336439A - The method and device of volcano mortar negative pressure immersion treatment intensifying regenerating aggregate - Google Patents
The method and device of volcano mortar negative pressure immersion treatment intensifying regenerating aggregate Download PDFInfo
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- CN109336439A CN109336439A CN201811322727.6A CN201811322727A CN109336439A CN 109336439 A CN109336439 A CN 109336439A CN 201811322727 A CN201811322727 A CN 201811322727A CN 109336439 A CN109336439 A CN 109336439A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/10—Coating or impregnating
- C04B20/1055—Coating or impregnating with inorganic materials
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Abstract
The method and device of volcano mortar negative pressure immersion treatment intensifying regenerating aggregate, the described method comprises the following steps: (1) aggregate loads；(2) negative pressure is formed；(3) negative pressure is impregnated；(4) Vibratory Mixing；(5) recycling is sieved and washed；(6) sabot is dried；(7) screening removal of impurities.The invention also includes the devices for implementing the above method.The method of the present invention can effectively improve the accounting of volcano mortar in Aggregate of recycled concrete, enhance the physical and mechanical property of Aggregate of recycled concrete and its product, Aggregate of recycled concrete 3d compression strength that treated, the processing of silicon ash slurry can improve 11% or more, nano-silicon processing can improve about 8%, and flyash can improve 10% or more；28d compression strength, silicon ash slurry processing can improve about 15%, and nano-silicon processing can improve about 10%, and flyash can improve 16% or more；The apparatus structure of volcano mortar negative pressure immersion treatment intensifying regenerating aggregate is simple, convenient for installation and maintenance, versatile.
Description
Technical field
The invention belongs to technical field of concrete more particularly to a kind of volcano mortar negative pressure immersion treatment intensifying regenerating coagulations
The method and device of native aggregate.
Background technique
Aggregate of recycled concrete refers to be process by concrete, mortar, stone, the brick and tile etc. in waste material of buildings, for matching
The particle of preparation, regeneration concrete.Compared with natural concrete aggregate, Aggregate of recycled concrete water absorption rate and crush values are big, apparent close
Spending low, poor physical property causes Mechanical properties of recycled concrete and endurance quality poor, and it is mixed to significantly limit regeneration
Coagulate the large-scale application of soil.
In the prior art or ball mill activating and regenerating aggregate is used, so that the quality of Aggregate of recycled concrete
It improves, can be used for producing reinforced concrete member, however mechanical enhancer method equipment requirement is high, energy requirements are big, regeneration concrete
Aggregate product utilization rate is lower；Using the glacial acetic acid of 5% concentration and the hydrochloric acid solution of 3% concentration to Aggregate of recycled concrete
Processing, but acid solution facture can reduce recycled concrete strength, and have higher requirement to soak concentration and time, to ring
Border pollution is also more serious；Using polymer emulsion, waterglass, siliceous waterproofing agent or calcium sulphoaluminate class swelling agent to regeneration
Aggregate such as impregnates, is dry at the processing, can this immersion treatment method effect it is unobvious, the processing time is long.Nowadays, fire is utilized
It is more satisfactory approach that mountain mortar, which handles Aggregate of recycled concrete, and volcano mortar is usually adsorbed on regeneration concrete bone
The surface of material is effectively improved the surface strength and water-resistance of Aggregate of recycled concrete.But since Aggregate of recycled concrete is broken
Or hole, crack etc. are generated during processing, cause Aggregate of recycled concrete water absorption rate still larger, leads to volcano mortar and regeneration
The defects such as aggregate interfacial adhesion is poor, and volcano mortar filling rate is low in Aggregate of recycled concrete hole.
106007438 B of CN discloses a kind of processing method of volcano mortar intensifying regenerating aggregate, and this method obtains
Mortar made of the Aggregate of recycled concrete after the mortar intensive treatment of volcano arrived, with untreated Aggregate of recycled concrete
Manufactured mortar is compared, and 3 days and 17% or more compression strength raising in 28 days, chloride permeability coefficient reduces by 30% or more, mortar
New, old interface microhardness improve 30% or more.But it is difficult to meet in current building industry to Aggregate of recycled concrete
High intensity, the quality requirements of less porous gap and lower water absorption rate.
Summary of the invention
The technical problem to be solved by the present invention is to overcome drawbacks described above of the existing technology, provide a kind of effectively contracting
The processing time of short Aggregate of recycled concrete absorption volcano mortar, treatment effeciency and product properties are improved, the utilization of energy consumption is reduced
The method of volcano mortar negative pressure immersion intensifying regenerating aggregate.
It is described negative using volcano mortar vacuum suction that the further technical problems to be solved of the present invention are to provide a kind of implementation
Pressure impregnates the device of the method for intensifying regenerating aggregate.
The technical solution adopted by the present invention to solve the technical problems is as follows: a kind of volcano mortar negative pressure immersion treatment reinforcing
The method of Aggregate of recycled concrete, comprising the following steps:
(1) aggregate loads: Aggregate of recycled concrete is loaded into negative-pressure container；
(2) negative pressure is formed: being closed the mud jacking valve, pulp-expelling valve, exhaust valve of negative-pressure container, is opened the vacuum valve of negative-pressure container, uses
Vacuum pump extracts the air in negative-pressure container and forms negative pressure；
(3) negative pressure is impregnated: being closed vacuum valve, is then opened mud jacking valve, volcano mortar is pressed into negative-pressure container with pneumatic mortar machine, note
Full negative-pressure container, starts negative pressure immersion treatment；
(4) Vibratory Mixing: Vibratory Mixing is carried out to negative-pressure container using vibrator, is then allowed to stand；
(5) recycling is sieved and washed: opening pulp-expelling valve, extra volcano mortar is recycled；By the regeneration coagulation after negative pressure immersion treatment
Native aggregate filters off extra slurry down to sieving and washing in square hole screen；
(6) sabot is dried: the Aggregate of recycled concrete sabot after sieving and washing, drying；
(7) screening removal of impurities: by the Aggregate of recycled concrete mechanical grading after drying, removing impurity,.
Further, in step (1), Aggregate of recycled concrete is that discarded concrete is carried out break process and screening, is obtained
Partial size >=5mm and≤40mm(preferably 10~20mm) regeneration coarse concrete aggregate and partial size >=0.075mm and < 5mm(it is preferred
0.05~2mm) the thin aggregate of regeneration, temperature be 60~120 DEG C (preferably 80~100 DEG C) under drying to constant weight.
Further, in step (1), after Aggregate of recycled concrete is fitted into negative-pressure container, the total volume of loosely-packed is
The 1/3~2/3 of negative-pressure container volume.
Further, in step (2), the vacuum pump extract the negative pressure that the air in negative-pressure container is formed be 0.02~
0.09MPa (preferably 0.04~0.08MPa).
Further, in step (3), normal pressure≤0.7MPa of pneumatic mortar machine.
Further, in step (3), volcano mortar is at least one of coal ash pulp, silicon ash slurry, nano-silicon slurry.
Further, in step (4), vibration gauge carries out Vibratory Mixing and continues the preferred 30min of 20~40min() and standing 50~
The preferred 60min of 70min().
Further, in step (5) and (7), the partial size of square hole screen is 60~90 μm (preferably 75 μm).
Further, in step (6), temperature when drying and processing is 100 DEG C, is carrying out first time drying, is continuing 1~3h
(preferably 2h) then carries out second of drying after the aggregate of agglomeration is carried out broken dispersion, it is preferred to continue 6~10h(
8h).
The present invention further solves technical solution used by its technical problem: a kind of to implement above-mentioned volcano mortar negative pressure
The device of the method for immersion treatment Aggregate of recycled concrete, including negative-pressure container, negative-pressure container bottom are equipped with vacuum valve and plasma discharge
Valve, upper end are equipped with exhaust valve, safety valve and mud jacking valve；Vacuum valve is connected by pipeline with vacuum pump, where vacuum valve on pipeline
Pressure vacuum gauge is installed, mud jacking valve is connected by madjack pipe with pneumatic mortar machine, and madjack pipe is equipped with mud jacking pressure where mud jacking valve
Table；Negative-pressure container is placed on vibrator.
Beneficial effects of the present invention: (1) improving the accounting of volcano mortar in Aggregate of recycled concrete, enhances regeneration concrete
The physical and mechanical property of aggregate and its product, made of the Aggregate of recycled concrete of normal pressure processing compared with mortar, present invention benefit
With vacuum suction negative pressure infusion method treated Aggregate of recycled concrete 3d compression strength, the processing of silicon ash slurry can improve 11% or more,
Nano-silicon processing can improve about 8%, and flyash can improve 10% or more；28d compression strength, silicon ash slurry processing can improve about 15%, receive
Rice silicon processing can improve about 10%, and flyash can improve 16% or more；(2) vacuum suction negative pressure immersion treatment intensifying regenerating concrete
The apparatus structure of aggregate is simple, convenient for installation and maintenance, versatile.
Detailed description of the invention
Fig. 1 is the apparatus structure schematic diagram of the volcano mortar negative pressure immersion treatment Aggregate of recycled concrete of the present invention；
In figure: 1, exhaust valve；2, safety valve；3, pneumatic mortar machine；4, mud jacking valve；5, vacuum pump；6, vacuum valve；7, pulp-expelling valve；8, it bears
Pressure vessel；9, vibrator.
Specific embodiment
Below with reference to embodiment and attached drawing, the invention will be further described.
Aggregate of recycled concrete source used in the present embodiment: it is the beams of concrete of C30 is broken, screening, obtains
The regeneration coagulation that the thin aggregate of the regeneration concrete that particle size range is 0.16mm~2.5mm and particle size range are 10~15mm
Native coarse concrete aggregate, is sealed.The water-cement ratio of volcano mortar is 0.5, sand-binder ratio 2.5.
Three kinds of volcano mortar slurries are prepared in embodiment and are respectively as follows: nano-silicon slurry, silicon ash slurry and coal ash pulp, wherein are received
Water-solid ratio in rice silicon slurry is 20:1, and the water-solid ratio in silicon ash slurry and coal ash pulp is 10:1, is dispersed using Ultrasound Instrument
Afterwards, uniform slurry solution is formed.
Embodiment 1
Specific step is as follows for the present embodiment negative pressure infusion method:
(1) aggregate loads: it chooses portion 1.5mm and regenerates thin aggregate, placing temperature is that 60 DEG C of baking oven 48h make its drying,
It is fitted into negative-pressure container in batches again, the total volume of Aggregate of recycled concrete charging loosely-packed is about the 2/ of container volume
3；
(2) negative pressure is formed: being closed container cover, is closed mud jacking valve, pulp-expelling valve, exhaust valve, opens vacuum valve, extracted using vacuum pump
Air in container makes the negative pressure for forming 0.06MPa in container, i.e., is shown as -0.06Mpa on vacuum meter；
(3) negative pressure is impregnated: being closed vacuum valve, is then opened mud jacking valve, starched nano-silicon with the normal pressure of 0.7MPa with pneumatic mortar machine
It is pressed into negative-pressure container, so that nano-silicon slurry fills container；
(4) Vibratory Mixing: using vibration gauge carry out Vibratory Mixing 30min, after stand 60min again；
(5) recycling is sieved and washed: opening pulp-expelling valve, extra nano-silicon is starched recycling, is reused, container cover is opened, will bear
Aggregate of recycled concrete after pressing immersion treatment, is put into 75 μm of square hole screens of partial size and sieves and washes, and filters off extra nano-silicon slurry solution；
(6) sabot is dried: will treated aggregate sabot, being put into temperature is that 100 DEG C of baking ovens are dried, in drying 2h
When, the aggregate for taking out agglomeration carries out broken dispersion, then carries out drying 8h.
(7) screening removal of impurities: the aggregate after nano-silicon slurry processing drying is put into 75 μm of square hole screens of partial size and carries out machine
Tool screening removes the nano-silicon being mingled in aggregate, and classification is stored in valve bag,.
The device of the present embodiment negative pressure immersion treatment Aggregate of recycled concrete, including negative-pressure container 8,8 bottom of negative-pressure container
Equipped with vacuum valve 6 and pulp-expelling valve 7, upper end is equipped with exhaust valve 1, safety valve 2 and mud jacking valve 4；Vacuum valve 6 passes through pipeline and vacuum pump
5 are connected, and pressure vacuum gauge is equipped on 6 place pipeline of vacuum valve, and mud jacking valve 4 is connected by madjack pipe with pneumatic mortar machine 3, mud jacking valve
4 place madjack pipes are equipped with mud jacking pressure gauge；Negative-pressure container 8 is placed on vibrator 9.
Embodiment 2
Specific step is as follows for the present embodiment negative pressure infusion method:
(1) aggregate loads: it chooses portion 2.5mm and regenerates thin aggregate, placing temperature is that 60 DEG C of baking oven 48h make its drying,
It is fitted into negative-pressure container in batches again, the total volume of Aggregate of recycled concrete charging loosely-packed is about the 1/ of container volume
3；
(2) negative pressure is formed: being closed container cover, is closed mud jacking valve, pulp-expelling valve, exhaust valve, opens vacuum valve, extracted using vacuum pump
Air in container makes the negative pressure for forming 0.08MPa in container, i.e., is shown as -0.08Mpa on vacuum meter；
(3) negative pressure is impregnated: being closed vacuum valve, is then opened mud jacking valve, starches silicon ash with the normal pressure of 0.7MPa with pneumatic mortar machine and press
Enter in container, so that silicon ash slurry fills negative-pressure container；
(4) Vibratory Mixing: using vibration gauge carry out Vibratory Mixing 30min, after stand 60min again；
(5) recycling is sieved and washed: opening pulp-expelling valve, extra silicon ash is starched recycling, is reused, container cover is opened, by negative pressure
Aggregate of recycled concrete after immersion treatment is put into 75 μm of square hole screens of partial size and sieves and washes, and filters off extra silicon ash slurry solution；
(6) sabot is dried: will treated aggregate sabot, being put into temperature is that 100 DEG C of baking ovens are dried, in drying 2h
When, the aggregate for taking out agglomeration carries out rubbing broken dispersion, then carries out drying 8h.
(7) screening removal of impurities: the aggregate after the processing drying of silicon ash slurry is put into 75 μm of square hole screens of partial size and carries out machine
Tool screening removes the nano-silicon being mingled in aggregate, and classification is stored in valve bag,.
The device of the present embodiment negative pressure immersion treatment Aggregate of recycled concrete is the same as embodiment 1.
Embodiment 3
The specific test procedure of the present embodiment negative pressure infusion method is as follows:
(1) aggregate loads: it chooses portion 10mm and regenerates coarse concrete aggregate, placing temperature as 60 DEG C of baking oven 48h makes its drying, then
It is fitted into negative-pressure container in batches.The total volume of Aggregate of recycled concrete charging loosely-packed is about the 2/3 of container volume；
(2) negative pressure is formed: being closed container cover, is closed mud jacking valve, pulp-expelling valve, exhaust valve, opens vacuum valve, extracted using vacuum pump
Air in container makes the negative pressure for forming 0.04MPa in container, i.e., is shown as -0.04Mpa on vacuum meter；
(3) negative pressure is impregnated: being closed vacuum valve, is then opened mud jacking valve, with pneumatic mortar machine with the normal pressure of 0.7MPa by coal ash pulp
It is pressed into container, so that coal ash pulp fills negative-pressure container；
(4) Vibratory Mixing: using vibration gauge carry out Vibratory Mixing 30min, after stand 60min again；
(5) recycling is sieved and washed: opening pulp-expelling valve, extra coal ash pulp is recycled, is reused, open container cover, will bear
Aggregate of recycled concrete after pressing immersion treatment, is put into 75 μm of square hole screens of partial size and sieves and washes, filter off extra coal ash pulp solution；
(6) sabot is dried: will treated aggregate sabot, being put into temperature is that 100 DEG C of baking ovens are dried, in drying 2h
When, the aggregate for taking out agglomeration carries out rubbing broken dispersion, then carries out drying 8h.
(7) screening removal of impurities: the aggregate after the processing drying of flyash slurry is put into 75 μm of square hole screens of partial size and is carried out
Mechanical grading removes the flyash being mingled in aggregate, and classification is stored in valve bag,.
The device of the present embodiment negative pressure immersion treatment Aggregate of recycled concrete is the same as embodiment 1.
Comparative example 1~4
Comparative example 1~3 uses Dipping method, and specific test procedure is as follows:
(1) prepare three kinds of slurries be respectively as follows: nano-silicon slurry, silicon ash slurry and coal ash pulp, wherein nano-silicon slurry in water-solid ratio be
20:1, silicon ash slurry and the water-solid ratio in coal ash pulp are 10:1, and after being dispersed using Ultrasound Instrument, it is molten to form uniform slurry
Liquid；
(2) three parts of thin aggregates of regeneration matched with Examples 1 to 3 same stages are chosen, placing temperature is that 60 DEG C of baking oven 48h make
Its dry, then by its respectively in conventional soaking container and prepared nano-silicon slurry, silicon ash slurry and coal ash pulp solution in into
Row impregnate, and using vibration gauge carry out Vibratory Mixing 30min, after stand 60min again；
(3) Aggregate of recycled concrete after taking out nano-silicon slurry, silicon ash slurry and coal ash pulp immersion treatment, is put into 75 μm of sides of partial size
Hole sizer is sieved and washed, and extra slurry is filtered off；
(4) will treated aggregate sabot, being put into temperature is that 100 DEG C of baking ovens are dried, and when drying 2h, will be tied
The aggregate of block carries out broken dispersion, then carries out drying 8h；
(5) aggregate after above-mentioned three kinds different slurry processing drying is put into 75 μm of square hole screens of partial size and carries out mechanical picker
Point, it is therefore an objective to nano-silicon, silicon ash and the flyash powder that removal is mingled in aggregate, classification are stored in valve bag,
Obtain comparative example 1~3.
Comparative example 4 is to choose portion 2mm to regenerate thin aggregate, and placing temperature is that 60 DEG C of baking oven 48h make its drying.
Aggregate of recycled concrete performance detection in above-described embodiment 1~3 and comparative example 1~4 is as follows:
(1) mass change before and after recycled aggregate negative pressure immersion treatment
Aggregate of recycled concrete, which increases weight and accounts for cementitious material specific gravity, after Examples 1 to 3 and comparative example 1~4 are handled is calculated,
As shown in table 1.The results are shown in Table 1.
Aggregate of recycled concrete increases weight and accounts for cementitious material specific gravity after 1 Examples 1 to 3 of table and comparative example 1~4 are handled
As a result
(2) performance change of recycled aggregate negative pressure immersion treatment
Influence of the volcano mortar negative pressure immersion treatment of the present invention to Aggregate of recycled concrete performance is detected, using " normal concrete
With sand, stone quality and test method standard " in sand apparent density and the test methods such as water absorption rate, volcano mortar negative pressure is impregnated
The Aggregate of recycled concrete of processing and the processing of volcano mortar Dipping compares and analyzes.
The water absorption rate and apparent density result such as table 2 of Aggregate of recycled concrete after Examples 1 to 3 and comparative example 1~4 are handled
It is shown.
The water absorption rate and apparent density result of Aggregate of recycled concrete after 2 Examples 1 to 3 of table and comparative example 1~4 are handled
As known from Table 2, regeneration can be effectively improved compared to the processing of volcano mortar Dipping using volcano mortar negative pressure immersion treatment
The apparent density of aggregate, and reduce the water absorption rate of Aggregate of recycled concrete.
(3) the recycled aggregate influence to regeneration mortar performance before and after the processing
Aggregate of recycled concrete is distinguished according to cement mortar rate 1:2.5, the ratio of mud 0.5 after Examples 1 to 3 and comparative example 1~4 are handled
Mortar specimen is made, and cement mortar resistance to compression in 3 days, 7 days and 28 days is tested using the miniature control loading tester of TYA-300B type
Intensity；The results are shown in Table 3 for the mortar strength that after Examples 1 to 3 and comparative example 1~4 are handled prepared by Aggregate of recycled concrete.
The mortar strength result that after 3 Examples 1 to 3 of table and comparative example 1~4 are handled prepared by Aggregate of recycled concrete
As can be known from Table 3, made of the Aggregate of recycled concrete of normal pressure processing compared with mortar, the present invention is negative using vacuum suction
Infusion method treated Aggregate of recycled concrete 3d compression strength is pressed, the processing of silicon ash slurry can improve 11% or more, and nano-silicon handles energy
About 8% is improved, flyash can improve 10% or more；28d compression strength, silicon ash slurry processing can improve about 15%, and nano-silicon processing can mention
High by about 10%, flyash can improve 16% or more.
In conclusion keeping its bright after the present invention carries out negative pressure immersion treatment to Aggregate of recycled concrete using vacuum suction
Aobvious weight gain and volcano mortar proportion significantly improve, hence it is evident that the water absorption rate for reducing Aggregate of recycled concrete effectively improves again
The apparent density of growing concrete aggregate to enhance the physical and mechanical property of Aggregate of recycled concrete, and then meets building at present
To the high intensity of Aggregate of recycled concrete, less porous gap and lower water absorption rate quality requirements in industry.
Claims (10)
1. a kind of method of volcano mortar negative pressure immersion treatment intensifying regenerating aggregate, which is characterized in that including following step
It is rapid:
(1) aggregate loads: Aggregate of recycled concrete is loaded into negative-pressure container；
(2) negative pressure is formed: being closed the mud jacking valve, pulp-expelling valve, exhaust valve of negative-pressure container, is opened the vacuum valve of negative-pressure container, uses
Vacuum pump extracts the air in negative-pressure container and forms negative pressure；
(3) negative pressure is impregnated: being closed vacuum valve, is then opened mud jacking valve, volcano mortar is pressed into negative-pressure container with pneumatic mortar machine, note
Full negative-pressure container, starts negative pressure immersion treatment；
(4) Vibratory Mixing: Vibratory Mixing is carried out to negative-pressure container using vibrator, is then allowed to stand；
(5) recycling is sieved and washed: opening pulp-expelling valve, extra volcano mortar is recycled；By the regeneration coagulation after negative pressure immersion treatment
Native aggregate filters off extra slurry down to sieving and washing in square hole screen；
(6) sabot is dried: the Aggregate of recycled concrete sabot after sieving and washing, drying；
(7) screening removal of impurities: by the Aggregate of recycled concrete mechanical grading after drying, removing impurity,.
2. the method for volcano mortar negative pressure immersion treatment intensifying regenerating aggregate, feature exist according to claim 1
In in step (1), the Aggregate of recycled concrete is that discarded concrete is carried out break process and screening, obtains partial size >=5mm
And the regeneration coarse concrete aggregate and the thin aggregate of partial size >=0.075mm and < 5mm regeneration of≤40mm, it is 60 in temperature
Drying to constant weight at~120 DEG C.
3. the method for volcano mortar negative pressure immersion treatment intensifying regenerating aggregate according to claim 1 or claim 2, feature
It is, in step (1), after the Aggregate of recycled concrete is fitted into negative-pressure container, the total volume of loosely-packed is negative pressure-volume
The 1/3~2/3 of device volume.
4. the method for the according to claim 1 or 2 or 3 volcano mortar negative pressure immersion treatment intensifying regenerating aggregates,
It is characterized in that, in step (2), it is 0.02~0.09MPa that the vacuum pump, which extracts the negative pressure that the air in negative-pressure container is formed,.
5. the method for volcano mortar negative pressure immersion treatment intensifying regenerating aggregate described according to claim 1~one of 4,
It is characterized in that, in step (3), the volcano mortar is at least one of coal ash pulp, silicon ash slurry, nano-silicon slurry.
6. the method for volcano mortar negative pressure immersion treatment intensifying regenerating aggregate described according to claim 1~one of 5,
It is characterized in that, in step (3), normal pressure≤0.7MPa of the pneumatic mortar machine.
7. the method for volcano mortar negative pressure immersion treatment intensifying regenerating aggregate described according to claim 1~one of 6,
It is characterized in that, in step (4), the vibration gauge carries out Vibratory Mixing and continues 20~40min, and stands 50~70min.
8. the method for volcano mortar negative pressure immersion treatment intensifying regenerating aggregate described according to claim 1~one of 7,
It is characterized in that, in step (5) and (7), the aperture of the square hole screen is 60~90 μm.
9. the method for volcano mortar negative pressure immersion treatment intensifying regenerating aggregate described according to claim 1~one of 8,
It is characterized in that, in step (6), the temperature of the drying is 100 DEG C, and first time drying and processing continues 1~3h, then, will agglomerate
Aggregate carry out broken dispersion after, carry out second and dry, second of drying continues 6~10h.
10. a kind of side for implementing volcano mortar negative pressure immersion treatment intensifying regenerating aggregate described in one of claim 1~9
The device of method, which is characterized in that including negative-pressure container, negative-pressure container bottom is equipped with vacuum valve and pulp-expelling valve, and upper end is equipped with exhaust
Valve, safety valve and mud jacking valve；Vacuum valve is connected by pipeline with vacuum pump, is equipped with vacuum pressure on pipeline where vacuum valve
Table, mud jacking valve are connected by madjack pipe with pneumatic mortar machine, and madjack pipe is equipped with mud jacking pressure gauge where mud jacking valve；Negative-pressure container is placed in
On vibrator.
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| CN110510947A (en) * | 2019-08-29 | 2019-11-29 | 江苏苏博特新材料股份有限公司 | The method that microwave curing prepares the low-quality mine spike recycled cement based articles of large dosage |
| CN110759657A (en) * | 2019-11-22 | 2020-02-07 | 昆明理工大学 | Method for reinforcing recycled aggregate and improving bonding of recycled aggregate and mortar |
| CN110845166A (en) * | 2019-12-14 | 2020-02-28 | 长安大学 | Device for soaking recycled aggregate |
| CN111116123A (en) * | 2020-01-08 | 2020-05-08 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Recycled aggregate fiber concrete for high-speed railway engineering and preparation method thereof |
| CN111892375A (en) * | 2020-09-18 | 2020-11-06 | 湖南云中再生科技股份有限公司 | Construction waste recycled concrete and preparation method thereof |
| CN112047688A (en) * | 2020-09-09 | 2020-12-08 | 咸阳东大洋混凝土有限公司 | Recycled aggregate concrete and preparation method thereof |
| CN112500009A (en) * | 2020-12-15 | 2021-03-16 | 唐山市南堡开发区安山混凝土有限公司 | High-durability recycled aggregate concrete and preparation method thereof |
| CN116396000A (en) * | 2023-03-09 | 2023-07-07 | 五邑大学 | Recycled coarse aggregate modifying device |
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