CN108793868A - A kind of regeneration concrete and its production technology of the waste material containing PC - Google Patents
A kind of regeneration concrete and its production technology of the waste material containing PC Download PDFInfo
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- CN108793868A CN108793868A CN201810614435.3A CN201810614435A CN108793868A CN 108793868 A CN108793868 A CN 108793868A CN 201810614435 A CN201810614435 A CN 201810614435A CN 108793868 A CN108793868 A CN 108793868A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
Abstract
The present invention proposes a kind of regeneration concrete and its production technology of the waste material containing PC, which includes following percentage composition component：Cement 15-25wt%, river sand 20-40wt%, PC waste material 2-10wt%, recycled fine aggregate 15-30wt%, polycarboxylate high performance water-reducing agent 0.1-0.5wt%, modified Fluorspar Powder 1-2.5wt%, water surplus, the present invention passes through rational raw material choice, the effectiveness of regeneration concrete has been effectively ensured, storeroom mixing associativity is strong, collapse protection type workability also has being significantly improved, mechanical property tool is significantly improved, and water-reducing rate can keep 45.7MPa or more up to 30% or more, 28d compression strength.
Description
Technical field
The present invention relates to recycled concrete fields, and in particular to a kind of regeneration concrete of the waste material containing PC and its production
Technique.
Background technology
Regeneration concrete refers to concrete block that will discard after broken, cleaning, classification, is compounded by a certain percentage with grade
It closes, partly or entirely replaces the natural aggregates such as sandstone (mainly coarse aggregate), add new coagulation made of cement, water etc. are matched
Soil.Regeneration concrete can have following several situations by the combining form gathered materials：Gather materials all regenerated aggregates；Coarse aggregate is again
Life is gathered materials, fine aggregate is natural sand；Coarse aggregate is natural rubble or cobble, fine aggregate are regenerated aggregate；Regenerated aggregate replacement portion
Divide coarse aggregate or fine aggregate.
Developed and used waste concrete as recycled aggregate, on the one hand solve the processing of a large amount of discarded concretes it is difficult and
The problems such as ecological environment thereby resulted in is worsening；On the other hand consumption of the construction industry to natural aggregate can be reduced, to
The exploitation to fine aggregate stone is reduced, fundamentally solves natural aggregate increasingly scarcity and a large amount of Exploit sand and stones to ecological environment
Destruction problem, comprehensive benefit are notable.
It is glued it is well known that the intensity of concrete depends on cement strength, aggregate intensity and the interface of Behavior of Hardened Cement Paste and aggregate
Knotting strength.For normal concrete, in these factors of had an impact intensity, the boundary of coarse aggregate and Behavior of Hardened Cement Paste in aggregate
Face adhesion strength plays a decisive role to the intensity of concrete.Further, since aggregate self-strength is generally higher, therefore it is to mixed
The influence of solidifying soil intensity can not considered, but when aggregate itself is not hard enough, the destruction of aggregate itself also occurs once in a while,
Therefore the intensity of aggregate will also pay attention to.Particularly with the concrete prepared mixed with recycled aggregate, although general aggregate has foot
Enough high intensity, but because recycled aggregate incorporation, the interfacial transition zone of damage -form and recycled aggregate and Behavior of Hardened Cement Paste and
Recycled aggregate self-strength has inseparable contact.
In fact, when recycled aggregate prepares regenerated aggregate concrete for concrete, because of the spy of recycled aggregate porous surface
Property, cause recycled aggregate that there is higher water absorption rate, although after recycled aggregate water suction, the interface area water of recycled aggregate and Behavior of Hardened Cement Paste
Changing product has the condition of abundant aquation, but due to larger water-filling space, causes hydrated product in interface area leakiness, and more
Generous, the presence of these factors affects the intensity of regenerated aggregate concrete, due to inside recycled aggregate there are microcrack and just
Begin to damage, can also cause the decline of recycled concrete strength.Feature and self-defect about recycled aggregate high water absorption is to intensity
Influence behavior, at present hardly possible described from microstructure it is clear.Therefore, when preparing regenerated aggregate concrete, especially in profit
When preparing regenerated aggregate concrete with low-quality recycled aggregate, rational mix-design of carrying out has important shadow to its performance
It rings.
In the prior art, when preparing regenerated aggregate concrete using recycled aggregate, matching design is than generally using JGJ55-
2011《Design of common concrete proportioning regulation》, and the standard is just for the Concrete Design of general aggregate, for regeneration
Aggregate, the concrete that especially low-quality recycled aggregate is prepared, due to the particularity of recycled aggregate, according to matching for standard design
Composition and division in a proportion especially adds regenerative micro powder in preparation strength, water consumption, concrete standard difference etc., cannot design and suitably match
Composition and division in a proportion.Therefore, it is necessary to further develop the new recycled aggregate formula for concrete, to mitigate addition recycled aggregate to mixed
The influence of the performances such as solidifying soil working performance, mechanical property, durability, or even the performance data of concrete is improved, expand raw material
Application range, improve comprehensive benefit.
Invention content
In view of the above problems, the present invention proposes a kind of regeneration concrete and its production technology of the waste material containing PC,
By rational raw material choice, the effectiveness of regeneration concrete is effectively ensured, storeroom mixing associativity is strong, collapse protection type workability
Also tool is significantly improved, and mechanical property tool is significantly improved, and water-reducing rate can be kept up to 30% or more, 28d compression strength
45.7MPa or more.
In order to achieve the above purpose, the present invention uses technical solution below：
A kind of regeneration concrete of the waste material containing PC, including following percentage composition component：Cement 15-25wt%, river sand 20-
40wt%, PC waste material 2-10wt%, recycled fine aggregate 15-30wt%, polycarboxylate high performance water-reducing agent 0.1-0.5wt%, change
Property Fluorspar Powder 1-2.5wt%, water surplus.
Preferably, the regeneration concrete of the waste material containing PC further includes barium sulfate 0.05-0.2wt%, nanometer calcium sulfate whisker
0.2-0.4wt%, isooctyltriethoxysilane 0.5-2wt%.
Preferably, husky and moisture content is 6-7% during cement is used using any one in P.P, P.F, P.C, river sand；PC
Size of waste is less than 1mm；Recycled fine aggregate grain size is 1-3mm, and water absorption rate is less than 5%.
Preferably, modified Fluorspar Powder is made of following mass fraction：15-35 parts of fluorite, 20-40 parts of asphalt, nanometer
3-6 parts of silicon nitride powder of grade, 4-5 parts of activated alumina, modified Fluorspar Powder preparation process are：Raw material is weighed in parts by weight, by firefly
Stone crushed 300-325 mesh sieve, and activated alumina, nano-grade silicon nitride powder are then added thereto blending, are put into togerther pulse
3-10min is mixed in formula airflow mixer, takes out to obtain mixture；It adds mixture into asphalt, it is mixed to be put into togerther high speed
Mix 20-60min in conjunction machine, be then placed in carbonization treatment 2-4h in retort, after taking-up ball mill grinding cross 200 mesh sieve to get
Modified Fluorspar Powder.
Preferably, pulsed gas flow mixing machine operating temperature is 50-55 DEG C, and compressed gas is to contain 40-60vt% inertia
The gaseous mixture of gas and 20-30vt% hydrogen, compressed gas operating pressure are 1-1.2MPa；High-speed mixer operating temperature is
80-90 DEG C, mixing speed 1100-1200rpm；Charing process temperature is 230-250 DEG C.
Preferably, the regeneration concrete of the waste material containing PC, production technology include the following steps：
1) raw material is weighed in proportion, and PC waste materials are mixed with recycled fine aggregate first, suitable solution is added, stirs evenly,
Obtain batch mixing one；
2) it will be blended with batch mixing one with the remaining unclassified stores of water except cement, river sand, heat preservation, which is stood, after stirring evenly stacks
1-3h, then cooled to room temperature, obtains batch mixing two；
3) cement, river sand, remaining water are blended with batch mixing two, after mixing up to the regeneration coagulation of the waste material containing PC
Soil.
Preferably, the solution added in step 1) is the aqueous solution containing 3-3.5wt% Macrogol 600s, and additive amount is
The 5% of recycled fine aggregate quality；It is 45-50 DEG C that heat preservation, which stands stacking temperature, in step 2).
Due to using above-mentioned technical solution, the beneficial effects of the invention are as follows：The present invention has by rational raw material choice
Effect ensure that the effectiveness of regeneration concrete, and storeroom mixing associativity is strong, and collapse protection type workability also has being significantly improved, mechanics
Performance tool is significantly improved, and water-reducing rate can keep 45.7MPa or more up to 30% or more, 28d compression strength.
Recycled fine aggregate is directly added compared to conventional regeneration concrete, the present invention is also added with PC waste materials and modified cladding
Fluorspar Powder to aid formulation, effectively filled up the big problem of the regeneration feed porosity, coordinated water-reducing agent, greatly reduce use
Water；In addition PC, cladding Fluorspar Powder surface-active are strong, and the associativity between unclassified stores is good, and workability is obviously improved, meanwhile,
The Fluorspar Powder of coating modification embedded associativity in flowing is strong, further improves the mechanical property of regeneration concrete, pressure resistance
Degree improves 50% or more.
Specific implementation mode
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention,
Technical scheme in the embodiment of the invention is clearly and completely described.Based on the embodiment of the present invention, the common skill in this field
The every other embodiment that art personnel are obtained without creative efforts belongs to the model that the present invention protects
It encloses.
Embodiment 1：
A kind of regeneration concrete of the waste material containing PC, which is characterized in that including following percentage composition component：Cement 15wt%,
River sand 40wt%, PC waste material 6wt%, recycled fine aggregate 20wt%, polycarboxylate high performance water-reducing agent 0.4wt%, modified fluorite
Powder 2.5wt%, water surplus；Further include barium sulfate 0.15wt%, nanometer calcium sulfate whisker 0.3wt%, iso-octyl triethoxysilicane
Alkane 0.5wt%.
Husky and moisture content is 6-7% during cement uses any one in P.P, P.F, P.C, river sand to use；PC waste material grains
Diameter is less than 1mm；Recycled fine aggregate grain size is 1-3mm, and water absorption rate is less than 5%.
Modified Fluorspar Powder is made of following mass fraction：15 parts of fluorite, 25 parts of asphalt, 4 parts of nano-grade silicon nitride powder,
4 parts of activated alumina, modified Fluorspar Powder preparation process are：Raw material is weighed in parts by weight, and fluorite be crushed into 300-325 mesh
Sieve, is then added thereto blending by activated alumina, nano-grade silicon nitride powder, is put into togerther mixing in pulsed gas flow mixing machine
3-10min takes out to obtain mixture；It adds mixture into asphalt, is put into togerther in high-speed mixer and mixes 20-60min,
Be then placed in carbonization treatment 2-4h in retort, after taking-up ball mill grinding cross 200 mesh sieve to get modified Fluorspar Powder.
In modified Fluorspar Powder preparation process：Pulsed gas flow mixing machine operating temperature be 50 DEG C, compressed gas be containing
The gaseous mixture of 45vt% inert gases and 30vt% hydrogen, compressed gas operating pressure are 1MPa；High-speed mixer operating temperature
It is 80 DEG C, mixing speed 1100rpm；Charing process temperature is 230 DEG C.
The regeneration concrete of the waste material containing PC, production technology include the following steps：
1) raw material is weighed in proportion, and PC waste materials are mixed with recycled fine aggregate first, suitable solution is added, stirs evenly,
Obtain batch mixing one；The solution of addition is the aqueous solution containing 3wt% Macrogol 600s, and additive amount is recycled fine aggregate quality
5%；
2) it will be blended with batch mixing one with the remaining unclassified stores of water except cement, river sand, 45 DEG C of heat preservation standings after stirring evenly
3h is stacked, then cooled to room temperature, obtains batch mixing two；
3) cement, river sand, remaining water are blended with batch mixing two, after mixing up to the regeneration coagulation of the waste material containing PC
Soil.
Embodiment 2：
A kind of regeneration concrete of the waste material containing PC, which is characterized in that including following percentage composition component：Cement 20wt%,
River sand 40wt%, PC waste material 10wt%, recycled fine aggregate 15wt%, polycarboxylate high performance water-reducing agent 0.3wt%, modified fluorite
Powder 2wt%, water surplus；Further include barium sulfate 0.05wt%, nanometer calcium sulfate whisker 0.2wt%, isooctyltriethoxysilane
1.5wt%.
Husky and moisture content is 6-7% during cement uses any one in P.P, P.F, P.C, river sand to use；PC waste material grains
Diameter is less than 1mm；Recycled fine aggregate grain size is 1-3mm, and water absorption rate is less than 5%.
Modified Fluorspar Powder is made of following mass fraction：20 parts of fluorite, 30 parts of asphalt, 5 parts of nano-grade silicon nitride powder,
4 parts of activated alumina, modified Fluorspar Powder preparation process are：Raw material is weighed in parts by weight, and fluorite be crushed into 300-325 mesh
Sieve, is then added thereto blending by activated alumina, nano-grade silicon nitride powder, is put into togerther mixing in pulsed gas flow mixing machine
3-10min takes out to obtain mixture；It adds mixture into asphalt, is put into togerther in high-speed mixer and mixes 20-60min,
Be then placed in carbonization treatment 2-4h in retort, after taking-up ball mill grinding cross 200 mesh sieve to get modified Fluorspar Powder.
In modified Fluorspar Powder preparation process：Pulsed gas flow mixing machine operating temperature be 55 DEG C, compressed gas be containing
The gaseous mixture of 60vt% inert gases and 20vt% hydrogen, compressed gas operating pressure are 1.1MPa；High-speed mixer work temperature
Degree is 90 DEG C, mixing speed 1150rpm；Charing process temperature is 250 DEG C.
The regeneration concrete of the waste material containing PC, production technology include the following steps：
1) raw material is weighed in proportion, and PC waste materials are mixed with recycled fine aggregate first, suitable solution is added, stirs evenly,
Obtain batch mixing one；The solution of addition is the aqueous solution containing 3.2wt% Macrogol 600s, and additive amount is recycled fine aggregate quality
5%；
2) it will be blended with batch mixing one with the remaining unclassified stores of water except cement, river sand, 50 DEG C of heat preservation standings after stirring evenly
2.5h is stacked, then cooled to room temperature, obtains batch mixing two；
3) cement, river sand, remaining water are blended with batch mixing two, after mixing up to the regeneration coagulation of the waste material containing PC
Soil.
Embodiment 3：
A kind of regeneration concrete of the waste material containing PC, which is characterized in that including following percentage composition component：Cement 25wt%,
River sand 20wt%, PC waste material 8wt%, recycled fine aggregate 30wt%, polycarboxylate high performance water-reducing agent 0.2wt%, modified fluorite
Powder 1.5wt%, water surplus；Further include barium sulfate 0.2wt%, nanometer calcium sulfate whisker 0.4wt%, isooctyltriethoxysilane
1wt%.
Husky and moisture content is 6-7% during cement uses any one in P.P, P.F, P.C, river sand to use；PC waste material grains
Diameter is less than 1mm；Recycled fine aggregate grain size is 1-3mm, and water absorption rate is less than 5%.
Modified Fluorspar Powder is made of following mass fraction：35 parts of fluorite, 40 parts of asphalt, 6 parts of nano-grade silicon nitride powder,
5 parts of activated alumina, modified Fluorspar Powder preparation process are：Raw material is weighed in parts by weight, and fluorite be crushed into 300-325 mesh
Sieve, is then added thereto blending by activated alumina, nano-grade silicon nitride powder, is put into togerther mixing in pulsed gas flow mixing machine
3-10min takes out to obtain mixture；It adds mixture into asphalt, is put into togerther in high-speed mixer and mixes 20-60min,
Be then placed in carbonization treatment 2-4h in retort, after taking-up ball mill grinding cross 200 mesh sieve to get modified Fluorspar Powder.
In modified Fluorspar Powder preparation process：Pulsed gas flow mixing machine operating temperature be 55 DEG C, compressed gas be containing
The gaseous mixture of 40vt% inert gases and 25vt% hydrogen, compressed gas operating pressure are 1.1MPa；High-speed mixer work temperature
Degree is 85 DEG C, mixing speed 1200rpm；Charing process temperature is 230 DEG C.
The regeneration concrete of the waste material containing PC, production technology include the following steps：
1) raw material is weighed in proportion, and PC waste materials are mixed with recycled fine aggregate first, suitable solution is added, stirs evenly,
Obtain batch mixing one；The solution of addition is the aqueous solution containing 3.5wt% Macrogol 600s, and additive amount is recycled fine aggregate quality
5%；
2) it will be blended with batch mixing one with the remaining unclassified stores of water except cement, river sand, 50 DEG C of heat preservation standings after stirring evenly
1h is stacked, then cooled to room temperature, obtains batch mixing two；
3) cement, river sand, remaining water are blended with batch mixing two, after mixing up to the regeneration coagulation of the waste material containing PC
Soil.
Embodiment 4：
A kind of regeneration concrete of the waste material containing PC, which is characterized in that including following percentage composition component：Cement 20wt%,
River sand 30wt%, PC waste material 2wt%, recycled fine aggregate 25wt%, polycarboxylate high performance water-reducing agent 0.1wt%, modified fluorite
Powder 1wt%, water surplus；Further include barium sulfate 0.1wt%, nanometer calcium sulfate whisker 0.25wt%, isooctyltriethoxysilane
2wt%.
Husky and moisture content is 6-7% during cement uses any one in P.P, P.F, P.C, river sand to use；PC waste material grains
Diameter is less than 1mm；Recycled fine aggregate grain size is 1-3mm, and water absorption rate is less than 5%.
Modified Fluorspar Powder is made of following mass fraction：30 parts of fluorite, 35 parts of asphalt, 3 parts of nano-grade silicon nitride powder,
5 parts of activated alumina, modified Fluorspar Powder preparation process are：Raw material is weighed in parts by weight, and fluorite be crushed into 300-325 mesh
Sieve, is then added thereto blending by activated alumina, nano-grade silicon nitride powder, is put into togerther mixing in pulsed gas flow mixing machine
3-10min takes out to obtain mixture；It adds mixture into asphalt, is put into togerther in high-speed mixer and mixes 20-60min,
Be then placed in carbonization treatment 2-4h in retort, after taking-up ball mill grinding cross 200 mesh sieve to get modified Fluorspar Powder.
In modified Fluorspar Powder preparation process：Pulsed gas flow mixing machine operating temperature be 55 DEG C, compressed gas be containing
The gaseous mixture of 50vt% inert gases and 25vt% hydrogen, compressed gas operating pressure are 1.2MPa；High-speed mixer work temperature
Degree is 90 DEG C, mixing speed 1150rpm；Charing process temperature is 240 DEG C.
The regeneration concrete of the waste material containing PC, production technology include the following steps：
1) raw material is weighed in proportion, and PC waste materials are mixed with recycled fine aggregate first, suitable solution is added, stirs evenly,
Obtain batch mixing one；The solution of addition is the aqueous solution containing 3.2wt% Macrogol 600s, and additive amount is recycled fine aggregate quality
5%；
2) it will be blended with batch mixing one with the remaining unclassified stores of water except cement, river sand, 45 DEG C of heat preservation standings after stirring evenly
2h is stacked, then cooled to room temperature, obtains batch mixing two；
3) cement, river sand, remaining water are blended with batch mixing two, after mixing up to the regeneration coagulation of the waste material containing PC
Soil.
Embodiment 5：
A kind of regeneration concrete of the waste material containing PC, which is characterized in that including following percentage composition component：Cement 20wt%,
River sand 35wt%, PC waste material 5wt%, recycled fine aggregate 25wt%, polycarboxylate high performance water-reducing agent 0.5wt%, modified fluorite
Powder 2wt%, water surplus.
Husky and moisture content is 6-7% during cement uses any one in P.P, P.F, P.C, river sand to use；PC waste material grains
Diameter is less than 1mm；Recycled fine aggregate grain size is 1-3mm, and water absorption rate is less than 5%.
Modified Fluorspar Powder is made of following mass fraction：25 parts of fluorite, 20 parts of asphalt, 6 parts of nano-grade silicon nitride powder,
4 parts of activated alumina, modified Fluorspar Powder preparation process are：Raw material is weighed in parts by weight, and fluorite be crushed into 300-325 mesh
Sieve, is then added thereto blending by activated alumina, nano-grade silicon nitride powder, is put into togerther mixing in pulsed gas flow mixing machine
3-10min takes out to obtain mixture；It adds mixture into asphalt, is put into togerther in high-speed mixer and mixes 20-60min,
Be then placed in carbonization treatment 2-4h in retort, after taking-up ball mill grinding cross 200 mesh sieve to get modified Fluorspar Powder.
In modified Fluorspar Powder preparation process：Pulsed gas flow mixing machine operating temperature be 50 DEG C, compressed gas be containing
The gaseous mixture of 55vt% inert gases and 20vt% hydrogen, compressed gas operating pressure are 1.1MPa；High-speed mixer work temperature
Degree is 85 DEG C, mixing speed 1100rpm；Charing process temperature is 230 DEG C.
The regeneration concrete of the waste material containing PC, production technology include the following steps：
1) raw material is weighed in proportion, and PC waste materials are mixed with recycled fine aggregate first, suitable solution is added, stirs evenly,
Obtain batch mixing one；The solution of addition is the aqueous solution containing 3.3wt% Macrogol 600s, and additive amount is recycled fine aggregate quality
5%；
2) it will be blended with batch mixing one with the remaining unclassified stores of water except cement, river sand, 50 DEG C of heat preservation standings after stirring evenly
2h is stacked, then cooled to room temperature, obtains batch mixing two；
3) cement, river sand, remaining water are blended with batch mixing two, after mixing up to the regeneration coagulation of the waste material containing PC
Soil.
Regeneration concrete made from the embodiment of the present invention is tested for the property, and control group is done based on embodiment 1
1-4, wherein：
Control group 1：Without PC waste materials, remaining condition is constant (can be saved blending operations in step 1), will directly regenerate at this time
Fine aggregate is merged into step 2) blending operations together)；
Control group 2：Without modified Fluorspar Powder；
Control group 3：Both PC waste materials are free of, modified Fluorspar Powder is also free of；
Control group 4：Not barium sulfate-containing, nanometer calcium sulfate whisker, isooctyltriethoxysilane；
Blank group：Both PC waste materials are free of, are also free of modified Fluorspar Powder, while not barium sulfate-containing, nanometer calcium sulfate whisker, different
Octyltri-ethoxysilane；
Data measured is as follows：
| Compression strength, MPa (7d) | Compression strength, MPa (28d) | |
| Embodiment 1 | 28.4 | 46.9 |
| Embodiment 2 | 26.2 | 46.8 |
| Embodiment 3 | 27.6 | 47.1 |
| Embodiment 4 | 26.4 | 46.2 |
| Embodiment 5 | 27.7 | 45.7 |
| Control group 1 | 23.3 | 35.2 |
| Control group 2 | 22.6 | 35.4 |
| Control group 3 | 19.4 | 32.1 |
| Control group 4 | 20.7 | 34.3 |
| Blank group | 22.4 | 32.5 |
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to the foregoing embodiments
Invention is explained in detail, it will be understood by those of ordinary skill in the art that：It still can be to aforementioned each implementation
Technical solution recorded in example is modified or equivalent replacement of some of the technical features；And these modification or
It replaces, the spirit and scope for various embodiments of the present invention technical solution that it does not separate the essence of the corresponding technical solution.
Claims (7)
1. a kind of regeneration concrete of waste material containing PC, which is characterized in that including following percentage composition component：Cement 15-25wt%,
River sand 20-40wt%, PC waste material 2-10wt%, recycled fine aggregate 15-30wt%, polycarboxylate high performance water-reducing agent 0.1-
0.5wt%, modified Fluorspar Powder 1-2.5wt%, water surplus.
2. the regeneration concrete of the waste material according to claim 1 containing PC, it is characterised in that：Further include barium sulfate 0.05-
0.2wt%, nanometer calcium sulfate whisker 0.2-0.4wt%, isooctyltriethoxysilane 0.5-2wt%.
3. the regeneration concrete of the waste material according to claim 1 or 2 containing PC, it is characterised in that：The cement using P.P,
Any one in P.F, P.C, husky and moisture content is 6-7% during the river sand uses；PC size of waste is less than 1mm；Regeneration is thin
Aggregate size is 1-3mm, and water absorption rate is less than 5%.
4. the regeneration concrete of the waste material according to claim 3 containing PC, it is characterised in that：The modified Fluorspar Powder is by following
Mass fraction forms：15-35 parts of fluorite, 20-40 parts of asphalt, 3-6 parts of nano-grade silicon nitride powder, 4-5 parts of activated alumina,
The modified Fluorspar Powder preparation process is：Raw material is weighed in parts by weight, and fluorite be crushed into 300-325 mesh sieve, then will be lived
Property aluminium oxide, nano-grade silicon nitride powder be added thereto blending, be put into togerther in pulsed gas flow mixing machine and mix 3-10min, take
Go out to obtain mixture；It adds mixture into asphalt, is put into togerther in high-speed mixer and mixes 20-60min, be then placed in charcoal
Change carbonization treatment 2-4h in stove, after taking-up ball mill grinding cross 200 mesh sieve to get modified Fluorspar Powder.
5. the regeneration concrete of the waste material according to claim 4 containing PC, it is characterised in that：Pulsed gas flow mixing machine works
Temperature is 50-55 DEG C, and compressed gas is the gaseous mixture containing 40-60vt% inert gases and 20-30vt% hydrogen, compressed gas
Operating pressure is 1-1.2MPa；High-speed mixer operating temperature is 80-90 DEG C, mixing speed 1100-1200rpm；At charing
It is 230-250 DEG C to manage temperature.
6. the regeneration concrete of the waste material according to claim 3 containing PC, which is characterized in that production technology includes following step
Suddenly：
1) raw material is weighed in proportion, and PC waste materials are mixed with recycled fine aggregate first, suitable solution is added, stirs evenly, are obtained mixed
Material one；
2) it being blended with batch mixing one with the remaining unclassified stores of water except cement, river sand, heat preservation, which is stood, after stirring evenly stacks 1-3h,
Then cooled to room temperature obtains batch mixing two；
3) cement, river sand, remaining water are blended with batch mixing two, after mixing up to the regeneration concrete of the waste material containing PC.
7. the regeneration concrete of the waste material according to claim 6 containing PC, it is characterised in that：The solution of addition is in step 1)
Aqueous solution containing 3-3.5wt% Macrogol 600s, additive amount are the 5% of recycled fine aggregate quality；Heat preservation is stood in step 2)
It is 45-50 DEG C to stack temperature.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111268931A (en) * | 2020-03-20 | 2020-06-12 | 佛山市南海承骏科技有限公司 | Preparation method of recycled aggregate and dry-mixed mortar |
| CN113402188A (en) * | 2021-03-26 | 2021-09-17 | 浙江省建材集团浙西建筑产业化有限公司 | Regeneration process of pc component waste |
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| CN113548847A (en) * | 2020-04-24 | 2021-10-26 | 海安南京大学高新技术研究院 | Process method for preparing soft porcelain by utilizing PC solid waste |
| CN113402188A (en) * | 2021-03-26 | 2021-09-17 | 浙江省建材集团浙西建筑产业化有限公司 | Regeneration process of pc component waste |
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