CN106927751A - A kind of GHPC - Google Patents
A kind of GHPC Download PDFInfo
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- CN106927751A CN106927751A CN201710191127.XA CN201710191127A CN106927751A CN 106927751 A CN106927751 A CN 106927751A CN 201710191127 A CN201710191127 A CN 201710191127A CN 106927751 A CN106927751 A CN 106927751A
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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
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F279/00—Macromolecular compounds obtained by polymerising monomers on to polymers of monomers having two or more carbon-to-carbon double bonds as defined in group C08F36/00
- C08F279/02—Macromolecular compounds obtained by polymerising monomers on to polymers of monomers having two or more carbon-to-carbon double bonds as defined in group C08F36/00 on to polymers of conjugated dienes
- C08F279/04—Vinyl aromatic monomers and nitriles as the only monomers
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00017—Aspects relating to the protection of the environment
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00034—Physico-chemical characteristics of the mixtures
- C04B2111/00146—Sprayable or pumpable mixtures
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00241—Physical properties of the materials not provided for elsewhere in C04B2111/00
- C04B2111/00293—Materials impermeable to liquids
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
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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
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- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a kind of GHPC, it is made according to the raw material of following weight fraction：280~330 parts of cement, 260~300 parts of water, 340~410 parts of fine aggregate, 1250~1320 parts of coarse aggregate, 42~48 parts of flyash, 11.5~12.7 parts of viscosity reduction type high-efficiency water-reducing agent of poly-carboxylic acid, 220~430 parts of the modified abandoned ABS engineering plastics particle of scion grafting, 0.2~1.2 part of defoamer, 20~30 parts of nanometer silicon carbide；The present invention rationally can carry out production concrete using discarded ABS engineering plastics, and the concrete strength produced is high, realizes the reasonable regeneration of waste resource；The program may be used on technical field of concrete production.
Description
Technical field
The present invention relates to technical field of concrete production, and in particular to a kind of GHPC.
Background technology
In numerous civil engineering constructions, the application surface of concrete is wide, as many as access times be it is rarely found, especially
In recent years, a kind of newer concrete technology is fast-developing and applies to many practical engineering projects, that is, high
Performance concrete.High performance concrete is due to many excellent with high-durability, high workability, high intensity and high volume stability etc.
Good characteristic, it is considered to be current ecumenicity can concrete the most comprehensive, be used in many important engineerings so far, it is special
It is not in engineerings such as bridge, skyscraper, harbour buildings.High performance concrete has the incomparable Optimality of normal concrete
Can, the research on high performance concrete is one of most popular problem of current civil engineering field, if by high performance concrete
Combine consideration with environmental protection, ecological protection and sustainable development, then as GHPC.
" green " connotation of green concrete is：Economize on resources, the energy；Welding, is not more beneficial for environment；It is sustainable
Development, had both met contemporary Man's Demands, and do not endanger descendants.And its needs can be met.
So-called GHPC, refer to by material grind choosing, using special process, manufacture with special
The concrete of structure and surface characteristic；Carrying capacity of environment, and energy and environmental harmony can be reduced, it gives birth to animal and plant are adapted to
It is long, it is mankind's construction a home from home to the regulation ecological balance, landscape of beautifying the environment.
GHPC refers to the concrete that should be had the characteristics that：The sustainable development of concrete, energy can be met
Environmental pollution is reduced, harmonious with natural ecosystems can be developed again；There is intensity and durability higher than conventional concrete；Can
Selection aboundresources, the small raw material of energy consumption；Industrial waste resource can be largely utilized, realizes that the recyclable of non-renewable resources makes
With with harmful substance from low emission etc., therefore, people start with industrial waste resource, realize the regeneration of resource.
ABS engineering plastics are a kind of reluctant resources in current waste resource, the annual discarded ABS works for producing
Engineering plastics are about 2,000,000 tons, but mechanical performance is low in itself due to discarded ABS engineering plastics, the shortcomings of poor impact resistance, are allowed to
The preparation of high-performance slow setting soil is can be not applied directly to, the preparation of high performance concrete is such as directly applied to, then to concrete
Intensity tool has a significant impact, therefore, it is necessary to discarded ABS engineering plastics are improved, makes it to be applied to high-performance coagulation
The production of soil, realizes the reasonable regeneration of waste resource.
The content of the invention
In view of the above problems, it is necessary to which a kind of technical scheme that can be tackled is provided.
It is an object of the invention to provide a kind of GHPC, can rationally using discarded ABS engineering plastics
Material carries out production concrete, and the concrete strength produced is high, realizes the reasonable regeneration of waste resource.
What the present invention was realized in：
A kind of GHPC, it is made according to the raw material of following weight fraction：
280~330 parts of cement；
160~200 parts of water；
340~410 parts of fine aggregate；
1250~1320 parts of coarse aggregate；
42~48 parts of flyash；
11.5~12.7 parts of viscosity reduction type high-efficiency water-reducing agent of poly-carboxylic acid；
220~430 parts of the modified abandoned ABS engineering plastics particle of scion grafting；
0.2~1.2 part of defoamer；
20~30 parts of nanometer silicon carbide.
Further illustrated as of the invention, the modified waste plastic particles of described scion grafting are made in accordance with the following steps：
Step 1, bulking agent is put into acetone and is dissolved into capacity increasing liquid；
Step 2, discarded ABS engineering plastics are cleaned out and particle is ground into；
Step 3, discarded ABS engineering plastics particle, PVC granule and capacity increasing liquid are put into heating stirring 8 minutes in mixer；
Step 4, will be heated through step 3 after mixture be put into double screw extruder and extruded, obtain scion grafting modified useless
Abandon ABS engineering plastics；
Step 5, the modified abandoned ABS engineering plastics of scion grafting are put into pulverizer and crushed, obtain the modified abandoned ABS works of scion grafting
Engineering plastics particle.
Further illustrated as of the invention, described discarded ABS engineering plastics particle, PVC granule mix with bulking agent
Mass ratio be 100：10：5.
Further illustrated as of the invention, the technological temperature of described double screw extruder is set as：Ith area：165℃、
IIth area：185 DEG C, IIIth area：195 DEG C, IVth area：200 DEG C, Vth area：200 DEG C, VIth area：195 DEG C, VIIth area：185 DEG C, the areas of 45- I：170
DEG C, 45 heads：165℃.
Further illustrated as of the invention, the screw speed of described double screw extruder is 125r/min.
Further illustrated as of the invention, described bulking agent is made according to following weight fraction：
42 parts of maleic anhydride；
3 parts of cumyl peroxide；
5 parts of haloflex；
3 parts of hydrogenated styrene-butadiene-styrene block copolymers.
Further illustrated as of the invention, the solid content of the viscosity reduction type high-efficiency water-reducing agent of poly-carboxylic acid is 8%~10%.
Further illustrated as of the invention, a kind of stirring means of described GHPC are as follows：
(1), cement, water, fine aggregate, flyash, the modified abandoned ABS engineering plastics particle of scion grafting and nanometer silicon carbide are added
Enter mixer to stir 60 seconds；
(2), mixer is added to stir 30 seconds viscosity reduction type high-efficiency water-reducing agent of poly-carboxylic acid and defoamer；
(3) coarse aggregate, is added into mixer stirring.
The beneficial effect that the present invention possesses：
1st, the bulking agent that the present invention is used contains maleic anhydride, cumyl peroxide, haloflex and hydrogenation of benzene second
Alkene-butadiene-styrene block copolymer, it introduces highly polar reactive group, can improve macromolecular material and filler it
Between interface performance, improve the cohesive at interface, so as to improve the bonding force of discarded ABS engineering plastics, improve the stretching of material
The mechanical properties such as intensity, bending strength and impact strength.
2nd, the present invention produces the modified abandoned ABS engineering plastics of scion grafting with extruder, the maleic anhydride containing free state in product
It is few, the hydroxyl phase of the maleic anhydride active group discarded on ABS engineering plastics segments in extrusion and discarded ABS engineering plastics
Mutually there is esterification, effectively promote to disperse well between blend components, strengthen interface cohesion, and then discarded ABS engineerings
The impact property of plastics is greatly improved；And, discard ABS engineering plastics particles and high shear is received during melt molding
The effect of power, its form generation change shows as dispersion phase domain aggregation, thicker, so that performance changes, therefore can be steady
Fixed its morphosis, further improves and stability.
3rd, PVC granule is mixed into discarded ABS engineering plastics particle by the present invention, improves the constituent content of blending, strengthens boundary
Face combines, it is possible to increase discard notch impact strength, Vicat softening point and the tensile strength of ABS engineering plastics particles.
4th, present invention adds nanometer silicon carbide, because it has good retractility and water proofing property, can cover tiny
Crack, with the self-repair function to microcrack, thus the performance such as intensity, hardness, ageing resistance, durability to concrete is equal
It is significantly increased.
5th, the ratio of mud of the present invention is relatively low, and the intensity, impermeability, durability after concrete hardening can be improved, addition
After water reducer, the enhancing of concrete grout foam stability, but concrete performance can be reduced, therefore with the use of defoamer, with regard to energy
Foam is fully eliminated, the effect of additive is given full play to, it is ensured that concrete performance.
6th, the present invention is by adjusting the feeding sequence of additive in raw material, its principle：Gelling → absorption → dispersion, should
Principle can accelerate the gelling material particles disperseed in concrete, and so as to reach the purpose of homogenizing concrete, the present invention is using this
New technology, it is possible to reduce the clogging in pumping procedure, keep the slump loss, lifting shaping after concrete quality,
Solve a high-rise, remote concrete pumping technique problem；Meanwhile, during by adjusting the blanking time of additive and stir mortar
Between, improve incorporation degree, pump-conveying property, the finished product concrete uniformity, the later stage cracking of solution concrete of concrete etc. a series of
Problem, final improve product quality.
Specific embodiment
Below by specific embodiment, the present invention is further described, but protection scope of the present invention be not limited to it is following
Embodiment.
In the examples below, raw material requires to choose according to following：
Cement：From 42.5 grades of portland cements；
Fine aggregate：Modulus of fineness is more than 2.6, and clay content is less than 1.5%；
Coarse aggregate：5~10mm granular mass accounts for 40%, and 10~20mm granular mass accounts for 60%, and crush index is less than 5%；
Flat-elongated particles content is less than 10% in coarse aggregate；
Flyash：From high-quality I grades of flyash；
Nanometer silicon carbide：12 nanometers of average grain diameter, impurity content is less than 0.1%；
The modified abandoned ABS engineering plastics particle of scion grafting：1~1.5mm of particle diameter.
Embodiment 1：
A kind of GHPC, it is made according to the raw material of following weight fraction：
280 parts of cement；
160 parts of water；
340 parts of fine aggregate；
1250 parts of coarse aggregate；
42 parts of flyash；
11.5 parts of viscosity reduction type high-efficiency water-reducing agent of poly-carboxylic acid；
220 parts of the modified abandoned ABS engineering plastics particle of scion grafting；
0.2 part of defoamer；
20 parts of nanometer silicon carbide；
Because the present embodiment contains nanometer silicon carbide, it has good retractility and water proofing property, can cover tiny splitting
Seam, with the self-repair function to microcrack, thus the performance such as intensity, hardness, ageing resistance, durability to concrete has
Significantly improve；Simultaneously as the present embodiment ratio of mud is relatively low, the intensity, impermeability, durability after concrete hardening can be obtained
Improve, after addition water reducer, the enhancing of concrete grout foam stability, this can reduce concrete performance again, therefore with the use of mixed
Solidifying soil defoamer, just can fully eliminate foam, give full play to the effect of additive, it is ensured that concrete performance.
Used as further illustrating for the present embodiment, the modified waste plastic particles of described scion grafting are made in accordance with the following steps：
Step 1, bulking agent is put into acetone and is dissolved into capacity increasing liquid；
Step 2, discarded ABS engineering plastics are cleaned out and particle is ground into；
Step 3, discarded ABS engineering plastics particle, PVC granule and capacity increasing liquid are put into heating stirring 8 minutes in mixer；
In this step, PVC granule is mixed into discarded ABS engineering plastics particle, improves blend components content, strengthen interface cohesion, energy
Enough notch impact strengths for improving discarded ABS engineering plastics particles, Vicat softening point and tensile strength；
Step 4, will be heated through step 3 after mixture be put into double screw extruder and extruded, obtain scion grafting modified useless
Abandon ABS engineering plastics；In this step, because bulking agent introduces highly polar reactive group, macromolecular material can be improved and filled out
Interface performance between material, improves the cohesive at interface, so as to improve the bonding force of discarded ABS engineering plastics, improves material
The mechanical properties such as tensile strength, bending strength and impact strength；And, produce the modified abandoned ABS engineering plastics of scion grafting with extruder
Material, the maleic anhydride containing free state is few in product, the maleic anhydride active group discarded on ABS engineering plastics segments in extrusion
Mutually there is esterification in group, effectively promote to disperse well between blend components with the hydroxyl of discarded ABS engineering plastics, increase
Strong―binding interface, so the impact property of discarded ABS engineering plastics is greatly improved；And, discard ABS engineering plastics
Grain acted on by high shear force during melt molding, its form generation change, show as dispersion phase domain assemble, it is thicker, from
And performance is changed, therefore its morphosis can be stablized, further improve and stability；
Step 5, the modified abandoned ABS engineering plastics of scion grafting are put into pulverizer and crushed, obtain the modified abandoned ABS works of scion grafting
Engineering plastics particle.
Used as further illustrating for the present embodiment, described discarded ABS engineering plastics particle, PVC granule and bulking agent are mixed
The mass ratio of conjunction is 100：10：5.
Used as further illustrating for the present embodiment, the technological temperature of described double screw extruder is set as：Ith area：165
DEG C, IIth area：185 DEG C, IIIth area：195 DEG C, IVth area：200 DEG C, Vth area：200 DEG C, VIth area：195 DEG C, VIIth area：185 DEG C, the areas of 45- I：
170 DEG C, 45 heads：165℃.
Used as further illustrating for the present embodiment, the screw speed of described double screw extruder is 125r/min；At this
The maleic anhydride grafting ratio of the modified abandoned ABS engineering plastics of scion grafting produced under rotating speed is about 2%, and the scion grafting produced changes
Property discarded ABS engineering plastics impact strength, tensile yield strength, tensile break strength, modulus of elasticity in static bending etc. be optimal.
Used as further illustrating for the present embodiment, described bulking agent is made according to following weight fraction：
42 parts of maleic anhydride；
3 parts of cumyl peroxide；
5 parts of haloflex；
3 parts of hydrogenated styrene-butadiene-styrene block copolymers.
Used as further illustrating for the present embodiment, the solid content of described viscosity reduction type high-efficiency water-reducing agent of poly-carboxylic acid is 8%, its
The water reducer being made of " a kind of viscosity reduction type polycarboxylate water-reducer and preparation method thereof " of Application No. 201410453626.8,
It is 8%, the viscosity reduction type high-efficiency water-reducing agent of poly-carboxylic acid as described in the present embodiment to be made after the water reducer and be diluted with water to solid content.
The viscosity reduction type high-efficiency water-reducing agent of poly-carboxylic acid of the present embodiment can effectively reduce slurry viscosity, it is met construction requirement, and
Just have what the slump and fluidity of concrete were kept for a long time without with high collapse protection type polycarboxylate water-reducer compound use
Effect, reaches the purpose of concrete long-distance transportation.
Used as further illustrating for the present embodiment, the concrete-agitating method of the present embodiment is as follows：
(1), cement, water, fine aggregate, flyash, the modified abandoned ABS engineering plastics particle of scion grafting and nanometer silicon carbide are added
Enter mixer to stir 60 seconds；
(2), mixer is added to stir 30 seconds viscosity reduction type high-efficiency water-reducing agent of poly-carboxylic acid and defoamer；
(3) coarse aggregate, is added into mixer stirring；
The present embodiment is by adjusting the feeding sequence of additive in raw material, its principle：Gelling → absorption → dispersion, should
Principle can accelerate the gelling material particles disperseed in concrete, and so as to reach the purpose of homogenizing concrete, the present embodiment uses this
Plant new technology, it is possible to reduce the clogging in pumping procedure, keep the loss of the slump, point out the coagulation soil property after shaping
Amount, solution high level, a remote concrete pumping technique problem；Meanwhile, by the blanking time and the stirring sand that adjust additive
The slurry time, improve incorporation degree, pump-conveying property, the finished product concrete uniformity, later stage cracking of solution concrete of concrete etc.
Series of problems, final improve product quality.
Embodiment 2：
A kind of GHPC, it is made according to the raw material of following weight fraction：
305 parts of cement；
180 parts of water；
375 parts of fine aggregate；
1285 parts of coarse aggregate；
45 parts of flyash；
12.1 parts of viscosity reduction type high-efficiency water-reducing agent of poly-carboxylic acid；
275 parts of the modified abandoned ABS engineering plastics particle of scion grafting；
0.7 part of defoamer；
25 parts of nanometer silicon carbide.
Because the present embodiment contains nanometer silicon carbide, it has good retractility and water proofing property, can cover tiny splitting
Seam, with the self-repair function to microcrack, thus the performance such as intensity, hardness, ageing resistance, durability to concrete has
Significantly improve；Simultaneously as the present embodiment ratio of mud is relatively low, the intensity, impermeability, durability after concrete hardening can be obtained
Improve, after addition water reducer, the enhancing of concrete grout foam stability, this can reduce concrete performance again, therefore with the use of mixed
Solidifying soil defoamer, just can fully eliminate foam, give full play to the effect of additive, it is ensured that concrete performance.
Used as further illustrating for the present embodiment, the modified waste plastic particles of described scion grafting are made in accordance with the following steps：
Step 1, bulking agent is put into acetone and is dissolved into capacity increasing liquid；
Step 2, discarded ABS engineering plastics are cleaned out and particle is ground into；
Step 3, discarded ABS engineering plastics particle, PVC granule and capacity increasing liquid are put into heating stirring 8 minutes in mixer；
In this step, PVC granule is mixed into discarded ABS engineering plastics particle, improves blend components content, strengthen interface cohesion, energy
Enough notch impact strengths for improving discarded ABS engineering plastics particles, Vicat softening point and tensile strength；
Step 4, will be heated through step 3 after mixture be put into double screw extruder and extruded, obtain scion grafting modified useless
Abandon ABS engineering plastics；In this step, because bulking agent introduces highly polar reactive group, macromolecular material can be improved and filled out
Interface performance between material, improves the cohesive at interface, so as to improve the bonding force of discarded ABS engineering plastics, improves material
The mechanical properties such as tensile strength, bending strength and impact strength；And, produce the modified abandoned ABS engineering plastics of scion grafting with extruder
Material, the maleic anhydride containing free state is few in product, the maleic anhydride active group discarded on ABS engineering plastics segments in extrusion
Mutually there is esterification in group, effectively promote to disperse well between blend components with the hydroxyl of discarded ABS engineering plastics, increase
Strong―binding interface, so the impact property of discarded ABS engineering plastics is greatly improved；And, discard ABS engineering plastics
Grain acted on by high shear force during melt molding, its form generation change, show as dispersion phase domain assemble, it is thicker, from
And performance is changed, therefore its morphosis can be stablized, further improve and stability；
Step 5, the modified abandoned ABS engineering plastics of scion grafting are put into pulverizer and crushed, obtain the modified abandoned ABS works of scion grafting
Engineering plastics particle.
Used as further illustrating for the present embodiment, described discarded ABS engineering plastics particle, PVC granule and bulking agent are mixed
The mass ratio of conjunction is 100：10：5.
Used as further illustrating for the present embodiment, the technological temperature of described double screw extruder is set as：Ith area：165
DEG C, IIth area：185 DEG C, IIIth area：195 DEG C, IVth area：200 DEG C, Vth area：200 DEG C, VIth area：195 DEG C, VIIth area：185 DEG C, the areas of 45- I：
170 DEG C, 45 heads：165℃.
Used as further illustrating for the present embodiment, the screw speed of described double screw extruder is 125r/min；At this
The maleic anhydride grafting ratio of the modified abandoned ABS engineering plastics of scion grafting produced under rotating speed is about 2%, and the scion grafting produced changes
Property discarded ABS engineering plastics impact strength, tensile yield strength, tensile break strength, modulus of elasticity in static bending etc. be optimal.
Used as further illustrating for the present embodiment, described bulking agent is made according to following weight fraction：
42 parts of maleic anhydride；
3 parts of cumyl peroxide；
5 parts of haloflex；
3 parts of hydrogenated styrene-butadiene-styrene block copolymers.
Used as further illustrating for the present embodiment, the solid content of described viscosity reduction type high-efficiency water-reducing agent of poly-carboxylic acid is 9%, its
The water reducer being made of " a kind of viscosity reduction type polycarboxylate water-reducer and preparation method thereof " of Application No. 201410453626.8,
It is 9%, the viscosity reduction type high-efficiency water-reducing agent of poly-carboxylic acid as described in the present embodiment to be made after the water reducer and be diluted with water to solid content.
The viscosity reduction type high-efficiency water-reducing agent of poly-carboxylic acid of the present embodiment can effectively reduce slurry viscosity, it is met construction requirement, and
Just have what the slump and fluidity of concrete were kept for a long time without with high collapse protection type polycarboxylate water-reducer compound use
Effect, reaches the purpose of concrete long-distance transportation.
Used as further illustrating for the present embodiment, the concrete-agitating method of the present embodiment is as follows：
(1), cement, water, fine aggregate, flyash, the modified abandoned ABS engineering plastics particle of scion grafting and nanometer silicon carbide are added
Enter mixer to stir 60 seconds；
(2), mixer is added to stir 30 seconds viscosity reduction type high-efficiency water-reducing agent of poly-carboxylic acid and defoamer；
(3) coarse aggregate, is added into mixer stirring；
The present embodiment is by adjusting the feeding sequence of additive in raw material, its principle：Gelling → absorption → dispersion, should
Principle can accelerate the gelling material particles disperseed in concrete, and so as to reach the purpose of homogenizing concrete, the present embodiment uses this
Plant new technology, it is possible to reduce the clogging in pumping procedure, keep the loss of the slump, point out the coagulation soil property after shaping
Amount, solution high level, a remote concrete pumping technique problem；Meanwhile, by the blanking time and the stirring sand that adjust additive
The slurry time, improve incorporation degree, pump-conveying property, the finished product concrete uniformity, later stage cracking of solution concrete of concrete etc.
Series of problems, final improve product quality.
Embodiment 3：
A kind of GHPC, it is made according to the raw material of following weight fraction：
330 parts of cement；
200 parts of water；
410 parts of fine aggregate；
1320 parts of coarse aggregate；
48 parts of flyash；
12.7 parts of viscosity reduction type high-efficiency water-reducing agent of poly-carboxylic acid；
430 parts of the modified abandoned ABS engineering plastics particle of scion grafting；
1.2 parts of defoamer；
30 parts of nanometer silicon carbide.
Because the present embodiment contains nanometer silicon carbide, it has good retractility and water proofing property, can cover tiny splitting
Seam, with the self-repair function to microcrack, thus the performance such as intensity, hardness, ageing resistance, durability to concrete has
Significantly improve；Simultaneously as the present embodiment ratio of mud is relatively low, the intensity, impermeability, durability after concrete hardening can be obtained
Improve, after addition water reducer, the enhancing of concrete grout foam stability, this can reduce concrete performance again, therefore with the use of mixed
Solidifying soil defoamer, just can fully eliminate foam, give full play to the effect of additive, it is ensured that concrete performance.
Used as further illustrating for the present embodiment, the modified waste plastic particles of described scion grafting are made in accordance with the following steps：
Step 1, bulking agent is put into acetone and is dissolved into capacity increasing liquid；
Step 2, discarded ABS engineering plastics are cleaned out and particle is ground into；
Step 3, discarded ABS engineering plastics particle, PVC granule and capacity increasing liquid are put into heating stirring 8 minutes in mixer；
In this step, PVC granule is mixed into discarded ABS engineering plastics particle, improves blend components content, strengthen interface cohesion, energy
Enough notch impact strengths for improving discarded ABS engineering plastics particles, Vicat softening point and tensile strength；
Step 4, will be heated through step 3 after mixture be put into double screw extruder and extruded, obtain scion grafting modified useless
Abandon ABS engineering plastics；In this step, because bulking agent introduces highly polar reactive group, macromolecular material can be improved and filled out
Interface performance between material, improves the cohesive at interface, so as to improve the bonding force of discarded ABS engineering plastics, improves material
The mechanical properties such as tensile strength, bending strength and impact strength；And, produce the modified abandoned ABS engineering plastics of scion grafting with extruder
Material, the maleic anhydride containing free state is few in product, the maleic anhydride active group discarded on ABS engineering plastics segments in extrusion
Mutually there is esterification in group, effectively promote to disperse well between blend components with the hydroxyl of discarded ABS engineering plastics, increase
Strong―binding interface, so the impact property of discarded ABS engineering plastics is greatly improved；And, discard ABS engineering plastics
Grain acted on by high shear force during melt molding, its form generation change, show as dispersion phase domain assemble, it is thicker, from
And performance is changed, therefore its morphosis can be stablized, further improve and stability；
Step 5, the modified abandoned ABS engineering plastics of scion grafting are put into pulverizer and crushed, obtain the modified abandoned ABS works of scion grafting
Engineering plastics particle.
Used as further illustrating for the present embodiment, described discarded ABS engineering plastics particle, PVC granule and bulking agent are mixed
The mass ratio of conjunction is 100：10：5.
Used as further illustrating for the present embodiment, the technological temperature of described double screw extruder is set as：Ith area：165
DEG C, IIth area：185 DEG C, IIIth area：195 DEG C, IVth area：200 DEG C, Vth area：200 DEG C, VIth area：195 DEG C, VIIth area：185 DEG C, the areas of 45- I：
170 DEG C, 45 heads：165℃.
Used as further illustrating for the present embodiment, the screw speed of described double screw extruder is 125r/min；At this
The maleic anhydride grafting ratio of the modified abandoned ABS engineering plastics of scion grafting produced under rotating speed is about 2%, and the scion grafting produced changes
Property discarded ABS engineering plastics impact strength, tensile yield strength, tensile break strength, modulus of elasticity in static bending etc. be optimal.
Used as further illustrating for the present embodiment, described bulking agent is made according to following weight fraction：
42 parts of maleic anhydride；
3 parts of cumyl peroxide；
5 parts of haloflex；
3 parts of hydrogenated styrene-butadiene-styrene block copolymers.
Used as further illustrating for the present embodiment, the solid content of described viscosity reduction type high-efficiency water-reducing agent of poly-carboxylic acid is 10%,
It uses the diminishing that " a kind of viscosity reduction type polycarboxylate water-reducer and preparation method thereof " of Application No. 201410453626.8 is made
Agent, it is 10% to be made after the water reducer and be diluted with water to solid content, and the viscosity reduction type polycarboxylic acids as described in the present embodiment efficiently subtracts
Aqua.The viscosity reduction type high-efficiency water-reducing agent of poly-carboxylic acid of the present embodiment can effectively reduce slurry viscosity, it is met construction requirement,
And the slump and fluidity of concrete are protected for a long time without just having with high collapse protection type polycarboxylate water-reducer compound use
The effect held, reaches the purpose of concrete long-distance transportation.
Used as further illustrating for the present embodiment, the concrete-agitating method of the present embodiment is as follows：
(1), cement, water, fine aggregate, flyash, the modified abandoned ABS engineering plastics particle of scion grafting and nanometer silicon carbide are added
Enter mixer to stir 60 seconds；
(2), mixer is added to stir 30 seconds viscosity reduction type high-efficiency water-reducing agent of poly-carboxylic acid and defoamer；
(3) coarse aggregate, is added into mixer stirring；
The present embodiment is by adjusting the feeding sequence of additive in raw material, its principle：Gelling → absorption → dispersion, should
Principle can accelerate the gelling material particles disperseed in concrete, and so as to reach the purpose of homogenizing concrete, the present embodiment uses this
Plant new technology, it is possible to reduce the clogging in pumping procedure, keep the loss of the slump, point out the coagulation soil property after shaping
Amount, solution high level, a remote concrete pumping technique problem；Meanwhile, by the blanking time and the stirring sand that adjust additive
The slurry time, improve incorporation degree, pump-conveying property, the finished product concrete uniformity, later stage cracking of solution concrete of concrete etc.
Series of problems, final improve product quality.
Embodiment 4：
A kind of GHPC, it is made according to the raw material of following weight fraction：
300 parts of cement；
190 parts of water；
360 parts of fine aggregate；
1290 parts of coarse aggregate；
46 parts of flyash；
10.5 parts of viscosity reduction type high-efficiency water-reducing agent of poly-carboxylic acid；
280 parts of the modified abandoned ABS engineering plastics particle of scion grafting；
0.9 part of defoamer；
28 parts of nanometer silicon carbide.
Because the present embodiment contains nanometer silicon carbide, it has good retractility and water proofing property, can cover tiny splitting
Seam, with the self-repair function to microcrack, thus the performance such as intensity, hardness, ageing resistance, durability to concrete has
Significantly improve；Simultaneously as the present embodiment ratio of mud is relatively low, the intensity, impermeability, durability after concrete hardening can be obtained
Improve, after addition water reducer, the enhancing of concrete grout foam stability, this can reduce concrete performance again, therefore with the use of mixed
Solidifying soil defoamer, just can fully eliminate foam, give full play to the effect of additive, it is ensured that concrete performance.
Used as further illustrating for the present embodiment, the modified waste plastic particles of described scion grafting are made in accordance with the following steps：
Step 1, bulking agent is put into acetone and is dissolved into capacity increasing liquid；
Step 2, discarded ABS engineering plastics are cleaned out and particle is ground into；
Step 3, discarded ABS engineering plastics particle, PVC granule and capacity increasing liquid are put into heating stirring 8 minutes in mixer；
In this step, PVC granule is mixed into discarded ABS engineering plastics particle, improves blend components content, strengthen interface cohesion, energy
Enough notch impact strengths for improving discarded ABS engineering plastics particles, Vicat softening point and tensile strength；
Step 4, will be heated through step 3 after mixture be put into double screw extruder and extruded, obtain scion grafting modified useless
Abandon ABS engineering plastics；In this step, because bulking agent introduces highly polar reactive group, macromolecular material can be improved and filled out
Interface performance between material, improves the cohesive at interface, so as to improve the bonding force of discarded ABS engineering plastics, improves material
The mechanical properties such as tensile strength, bending strength and impact strength；And, produce the modified abandoned ABS engineering plastics of scion grafting with extruder
Material, the maleic anhydride containing free state is few in product, the maleic anhydride active group discarded on ABS engineering plastics segments in extrusion
Mutually there is esterification in group, effectively promote to disperse well between blend components with the hydroxyl of discarded ABS engineering plastics, increase
Strong―binding interface, so the impact property of discarded ABS engineering plastics is greatly improved；And, discard ABS engineering plastics
Grain acted on by high shear force during melt molding, its form generation change, show as dispersion phase domain assemble, it is thicker, from
And performance is changed, therefore its morphosis can be stablized, further improve and stability；
Step 5, the modified abandoned ABS engineering plastics of scion grafting are put into pulverizer and crushed, obtain the modified abandoned ABS works of scion grafting
Engineering plastics particle.
Used as further illustrating for the present embodiment, described discarded ABS engineering plastics particle, PVC granule and bulking agent are mixed
The mass ratio of conjunction is 100：10：5.
Used as further illustrating for the present embodiment, the technological temperature of described double screw extruder is set as：Ith area：165
DEG C, IIth area：185 DEG C, IIIth area：195 DEG C, IVth area：200 DEG C, Vth area：200 DEG C, VIth area：195 DEG C, VIIth area：185 DEG C, the areas of 45- I：
170 DEG C, 45 heads：165℃.
Used as further illustrating for the present embodiment, the screw speed of described double screw extruder is 125r/min；At this
The maleic anhydride grafting ratio of the modified abandoned ABS engineering plastics of scion grafting produced under rotating speed is about 2%, and the scion grafting produced changes
Property discarded ABS engineering plastics impact strength, tensile yield strength, tensile break strength, modulus of elasticity in static bending etc. be optimal.
Used as further illustrating for the present embodiment, described bulking agent is made according to following weight fraction：
42 parts of maleic anhydride；
3 parts of cumyl peroxide；
5 parts of haloflex；
3 parts of hydrogenated styrene-butadiene-styrene block copolymers.
Used as further illustrating for the present embodiment, the solid content of the viscosity reduction type high-efficiency water-reducing agent of poly-carboxylic acid is 9.5%, its
The water reducer being made of " a kind of viscosity reduction type polycarboxylate water-reducer and preparation method thereof " of Application No. 201410453626.8,
It is 9.5%, the viscosity reduction efficient diminishing of type polycarboxylic acids as described in the present embodiment to be made after the water reducer and be diluted with water to solid content
Agent.The viscosity reduction type high-efficiency water-reducing agent of poly-carboxylic acid of the present embodiment can effectively reduce slurry viscosity, it is met construction requirement, and
And the slump and fluidity of concrete are kept for a long time without just having with high collapse protection type polycarboxylate water-reducer compound use
Effect, reach the purpose of concrete long-distance transportation.
Used as further illustrating for the present embodiment, the concrete-agitating method of the present embodiment is as follows：
(1), cement, water, fine aggregate, flyash, the modified abandoned ABS engineering plastics particle of scion grafting and nanometer silicon carbide are added
Enter mixer to stir 60 seconds；
(2), mixer is added to stir 30 seconds viscosity reduction type high-efficiency water-reducing agent of poly-carboxylic acid and defoamer；
(3) coarse aggregate, is added into mixer stirring；
The present embodiment is by adjusting the feeding sequence of additive in raw material, its principle：Gelling → absorption → dispersion, should
Principle can accelerate the gelling material particles disperseed in concrete, and so as to reach the purpose of homogenizing concrete, the present embodiment uses this
Plant new technology, it is possible to reduce the clogging in pumping procedure, keep the loss of the slump, point out the coagulation soil property after shaping
Amount, solution high level, a remote concrete pumping technique problem；Meanwhile, by the blanking time and the stirring sand that adjust additive
The slurry time, improve incorporation degree, pump-conveying property, the finished product concrete uniformity, later stage cracking of solution concrete of concrete etc.
Series of problems, final improve product quality.
The concrete that 4 embodiments are produced on a trial basis to more than, determines its initial slump degree, initial extension degree and 16h slumps,
Each embodiment takes 32 concrete samples of 150*150*150mm die trials shaping respectively, in 20 ± 2 DEG C of temperature, relative humidity
Conserved respectively 7 days and 28 days under the conditions of being obtained more than 95%, experimental data is averaged, the performance such as following table such as its compression strength：
Shown by result above：The concrete of the production of embodiment 1~4 belongs to C55 grades, and its slump is small, and easily
Property is good, and in 7d and 28d, compression strength has exceeded 70% and 110% respectively, meets《GB50107-2010 strong concretes
Degree check evaluation criterion》Regulation, thus the present invention can using the scheme that discarded ABS engineering plastics produce high performance concrete
OK.
Finally it should be noted that：The preferred embodiment that the present invention is applied to concrete production is the foregoing is only, because
The protection domain that this above-described embodiment is not intended to limit the invention, although having been carried out in detail to the present invention with reference to above-described embodiment
Explanation, for a person skilled in the art, it can still be carried out to the technical scheme described in foregoing embodiments
Modification, or equivalent is carried out to which part technical characteristic.It is all within the spirit and principles in the present invention, made it is any
Modification, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (7)
1. a kind of GHPC, it is characterised in that the raw material according to following weight fraction are made：
280~330 parts of cement；
160~200 parts of water；
340~410 parts of fine aggregate；
1250~1320 parts of coarse aggregate；
42~48 parts of flyash；
11.5~12.7 parts of viscosity reduction type high-efficiency water-reducing agent of poly-carboxylic acid；
220~430 parts of the modified abandoned ABS engineering plastics particle of scion grafting；
0.2~1.2 part of defoamer；
20~30 parts of nanometer silicon carbide.
2. a kind of GHPC according to claim 1, it is characterised in that the modified waste plastics of described scion grafting
Particle is made in accordance with the following steps：
Step 1, bulking agent is put into acetone and is dissolved into capacity increasing liquid；
Step 2, discarded ABS engineering plastics are cleaned out and particle is ground into；
Step 3, discarded ABS engineering plastics particle, PVC granule and capacity increasing liquid are put into heating stirring 8 minutes in mixer；
Step 4, will be heated through step 3 after mixture be put into double screw extruder and extruded, obtain the modified abandoned ABS of scion grafting
Engineering plastics；
Step 5, the modified abandoned ABS engineering plastics of scion grafting are put into pulverizer and crushed, obtain the modified abandoned ABS engineering plastics of scion grafting
Material particle.
3. a kind of GHPC according to claim 2, it is characterised in that described discarded ABS engineering plastics
The mass ratio that material particle, PVC granule mix with bulking agent is 100：10：5.
4. a kind of GHPC according to claim 2, it is characterised in that described double screw extruder
Technological temperature is set as：Ith area：165 DEG C, IIth area：185 DEG C, IIIth area：195 DEG C, IVth area：200 DEG C, Vth area：200 DEG C, VIth area：195
DEG C, VIIth area：185 DEG C, the areas of 45- I：170 DEG C, 45 heads：165℃.
5. a kind of GHPC according to claim 2, it is characterised in that described double screw extruder
Screw speed is 125r/min.
6. a kind of GHPC according to claim 2, it is characterised in that described bulking agent is according to following
Weight fraction is made：
42 parts of maleic anhydride；
3 parts of cumyl peroxide；
5 parts of haloflex；
3 parts of hydrogenated styrene-butadiene-styrene block copolymers.
7. a kind of GHPC according to claim 1, it is characterised in that the viscosity reduction type polycarboxylic acids is efficient
The solid content of water reducer is 8%~10%.
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| CN112299790A (en) * | 2020-11-13 | 2021-02-02 | 上海百基混凝土有限公司 | Environment-friendly high-performance concrete and preparation method thereof |
| CN113045272A (en) * | 2021-03-23 | 2021-06-29 | 广州市长运预拌混凝土有限公司 | Green environment-friendly concrete and preparation method thereof |
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