CN109053109A - A kind of high strength light aggregate concrete and preparation method thereof - Google Patents
A kind of high strength light aggregate concrete and preparation method thereof Download PDFInfo
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- CN109053109A CN109053109A CN201811123980.9A CN201811123980A CN109053109A CN 109053109 A CN109053109 A CN 109053109A CN 201811123980 A CN201811123980 A CN 201811123980A CN 109053109 A CN109053109 A CN 109053109A
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- aggregate
- lightweight
- tailing
- haydite
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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
- C04B28/14—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 calcium sulfate cements
- C04B28/142—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 calcium sulfate cements containing synthetic or waste calcium sulfate cements
- C04B28/144—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 calcium sulfate cements containing synthetic or waste calcium sulfate cements the synthetic calcium sulfate being a flue gas desulfurization product
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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
- C04B2111/00017—Aspects relating to the protection of the environment
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/30—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values
- C04B2201/32—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values for the thermal conductivity, e.g. K-factors
-
- 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 provides a kind of high strength light aggregate concrete, in parts by weight, including following raw material: 350~550 parts of cementitious material, 450~600 parts of lightweight fine aggregate, 500~650 parts of lightweight coarse aggregate, 5~7 parts of additive, 150~170 parts of water.Lightweight fine aggregate includes the fine aggregate haydite of 60~80% mass fractions and the living construction rubbish powder of 20~40% mass fractions；The lightweight coarse aggregate is according to mass fraction meter, including following components: coarse aggregate haydite 50~75%, stone material tailing 10~30%, ceramic waste residue 10~20%, expanded graphite 3~8%.The concrete rationally uses stone material tailing, building waste, municipal sludge and ceramic waste residue in gel rubber material and aggregate, not only improve the mechanical property and stability of concrete, and new approach is provided for solid-state castoff recycling, be conducive to energy saving gentle solution environmental pressure.
Description
Technical field
The present invention relates to a kind of new building material fields, and in particular to a kind of high strength light aggregate concrete and its preparation side
Method.
Background technique
Lightweight aggregate concrete refers to be formulated using materials such as lightweight aggregate, cement and water, and dry apparent density is not more than
1950kg/m3Concrete.Lightweight aggregate concrete has self weight lighter compared with normal concrete, and anti-seismic performance is good, heat preservation
The features such as durability is good, by the development in a nearly century, has been made significant headway since applying since at the beginning of last century,
Many bridges and house also have been built using lightweight aggregate concrete in succession both at home and abroad.
Lightweight aggregate concrete uses the lesser lightweight aggregate of density and substitutes common coarse aggregate, and this lightweight aggregate is often relatively general
Logical sandstone has lower cylindrical compress strength, so cause the cubic compressive strength of lightweight aggregate concrete lower, it can not be extensive
It applies in load-carrying members；It is higher to lightweight aggregate choice requirement simultaneously, cause cost increase, complex process；And due to light bone
Material is larger with cementitious material density difference, and in concrete for making whipping process, the lesser lightweight aggregate of density has on biggish
Floating rate is easy to break through the viscous force of cementitious material, causes laminated segregation phenomenon, influence the stability of lightweight aggregate concrete.
In addition, with the accelerating process of industrialization and urbanization, the consumed resource of China's industrial circle will further expand
Greatly, it becomes increasingly conspicuous because of resource exploitation and using bring environmental problem, simultaneously because the utilization rate of resource is not high, produces a large amount of
Stone material tailing.Stone material tailing is typically all that the method for using nature to stack is handled.Farmland is not only occupied, and to nature
Ecological environment causes greatly to destroy.Rationally realize stone material tailing comprehensive utilization, can effective supplemental resources, improve Domestic Resources
Guarantee dynamics.Stone material tailing is silicate mineral mostly, contains SiO2、Al2O3、MgO、CaO、K2O、Fe2O3Etc. chemical components, can
To improve mechanical performance of concrete, resource reutilization is realized.But because stone material tailing activity is lower, the phase with other materials
Capacitive is poor, is less useful for the stability of lightweight aggregate concrete, therefore restricts its application.
Application No. is the patents of invention of CN201010277568.X, disclose a kind of impervious cracking resistance lightweight aggregate heat preservation coagulation
Soil, using quartz sand as primary raw material, the concrete of preparation all has water proof anti-seepage effect, and intensity is also improved, still
The stability of the lightweight aggregate concrete still needs to improve, and does not utilize the solid wastes such as tailing.Application No. is CN201410318142.2
Patent of invention, disclose a kind of lightweight aggregate concrete containing low-quality recycled aggregate, pass through the adjustment to raw material and cooperation
Specifically add outer agent, so that mixture state is met requirement, maintain the stable state of mixture, improves concrete and mix
Object workability is closed, but it is little for the improved strength of concrete, and primarily directed to the recycling of building waste, for stone material
There is still a need for further researchs for the recycling of tailing.
Summary of the invention
Goal of the invention of the invention first is that, in view of the above-mentioned problems, a kind of high strength light aggregate concrete is provided, by stone material
Tailing, building waste, municipal sludge and ceramic waste residue rationally use in gel rubber material and aggregate, not only improve concrete
Mechanical property and stability, and new approach is provided for solid-state castoff recycling, be conducive to energy saving gentle solution environment
Pressure.
In order to achieve the above objectives, the technical scheme adopted by the invention is that:
A kind of high strength light aggregate concrete, in parts by weight, including following raw material:
350~550 parts of cementitious material, 450~600 parts of lightweight fine aggregate, 500~650 parts of lightweight coarse aggregate, additive 5
~7 parts, 150~170 parts of water.
The cementitious material is mixed by the clinker of 55~75% mass fractions and the cement of 25~45% mass fractions
Material composition is closed, the cement mixture mass ratio is 10~20:5~15:1 stone material tailing, living construction rubbish powder and takes off
Sulphur gypsum composition.
The lightweight fine aggregate includes the work of the fine aggregate haydite and 20~40% mass fractions of 60~80% mass fractions
Property building waste powder；The lightweight coarse aggregate is according to mass fraction meter, including following components: coarse aggregate haydite 50~75%, stone
Material tailing 10~30%, ceramic waste residue 10~20%, expanded graphite 3~8%；The fine aggregate haydite and coarse aggregate haydite according to
Mass percent meter, including following raw material: building waste 20~50%, municipal sludge 10~20%, Concave-convex clay rod tailing 5
~15%, coral sand 5~15%, stone material tailing 10~20%, quick lime 5~10%, sawdust 5~10%, clay 1~10%.
The additive is according to mass fraction meter, including following components: water-reducing agent 20~30%, dispersing agent 20~30%,
Graphene 5~15%, lignocellulosic 20~30%, carbon fiber 10~30%.
The living construction rubbish powder is that building waste is first crushed to and mix with quick lime simultaneously grinding, then 650~
2~4h of heating and calcining is activated at 700 DEG C.
Preferably, the fine aggregate pottery sand partial size is less than 5mm, and the coarse aggregate haydite particle size range is 5mm~15mm.
Preferably, the preparation method of the fine aggregate haydite and coarse aggregate haydite the following steps are included:
(1) prepare raw material according to the mass percent, by building waste, Concave-convex clay rod tailing, coral sand, stone material
Tailing, quick lime, sawdust and clay mixing, drying, it is broken to obtain premix, by municipal sludge deodorization, then with the premix
Material mixing is closed, the weight percentage for stirring and controlling moisture is 20~30%, obtains mixture.
(2) mixture is pressed into raw material ball, then, the shape of the raw material ball is screened, is filtered out respectively
Raw material ball of the partial size in 5mm or less and 5mm~15mm.
(3) raw material ball is fired respectively, obtains fine aggregate haydite and coarse aggregate haydite.
Preferably, in step (3), specific sintering procedure are as follows: first by raw material ball with the speed of 2~6 DEG C/min from room temperature liter
Temperature keeps the temperature 10~20min, is then heated to 1160~1200 DEG C with the rate of 5~10 DEG C/min, and keep the temperature to 250~300 DEG C
Then 5~15min is cooled to 500~600 DEG C again with the rate of 10~15 DEG C/min, cooled to room temperature.
Preferably, the stone material tailing is granite tailing, in Quartz Tails, potassium albite tailing, basalt tailing
It is one or more.
Preferably, in the fine aggregate haydite and coarse aggregate haydite, stone material tailing first passes through pretreatment, described pretreated
Journey are as follows: stone material tailing is crushed, grinding, citrate is then added and sodium sulfanilate carries out secondary grinding；It is added
Citrate and sodium sulfanilate are respectively the 0.5~1% and 0.1~1% of stone material tailing quality.
Preferably, the water-reducing agent is polycarboxylate water-reducer, and solid content is 20~30%, and water-reducing rate is 32~35%.
Preferably, clinker is 42.5 Portland clinkers.
Preferably, the dispersing agent is hydroxypropyl methyl cellulose.
Another goal of the invention of the invention is to provide a kind of preparation method of high strength light aggregate concrete, simple process,
Processing cost is low.
A kind of preparation method of high strength light aggregate concrete, the following steps are included:
S1. cementitious material prepares: the clinker and cement mixture being mixed and stirred for uniformly, to obtain gelling material
Material.
S2. lightweight fine aggregate prepares: preparing light ceramic and living construction powder, is then uniformly mixed, the water for being added 2/3 is used
Amount, obtains lightweight fine aggregate standby material.
S3. lightweight coarse aggregate prepares: preparing thick matter haydite, and mixes with stone material tailing, ceramic waste residue, expanded graphite
It is even, 1/3 water consumption is added, obtains lightweight coarse aggregate standby material.
S4. additive prepares: the water-reducing agent, dispersing agent, graphene, lignocellulosic and carbon fiber are mixed and stirred for
Uniformly, additive standby material is obtained.
S5. prepared by concrete: by the lightweight fine aggregate standby material, lightweight coarse aggregate standby material, cementitious material and additional
Agent standby material is mixed evenly, and molding, maintenance obtain high strength lightweight aggregate concrete finished product.
Due to the adoption of the above technical scheme, the invention has the following advantages:
1. high strength light aggregate concrete of the invention closes stone material tailing, building waste, municipal sludge and ceramic waste residue
Reason uses in gel rubber material and aggregate, not only improves the mechanical property and stability of concrete, and again for solid-state castoff
Using new approach is provided, be conducive to energy saving gentle solution environmental pressure.Stone material tailing hardness with higher, fire prevention and
Higher compressive property, to assign the performances such as coagulation soil stabilization, high temperature resistant and fire prevention.
There is a large amount of concrete structure waste in building waste, when exclusive use, due to frictional resistance effect between node,
Density is poor；By being used in conjunction with municipal sludge, can the contact point of effectively lubricating aggregate make aggregate in pressure forming
It is in close contact, the compatibility between aggregate is improved, so as to improve the stability of concrete.Municipal sludge and Concave-convex clay rod tail
The use of mine can reduce the use of clay, improve the compatibility between aggregate.In addition, building waste is crushed, is added
Quick lime grinding and heat-activated prepare the use of living construction rubbish powder, have better solved that building waste activity is low, density
The defect of difference；And it is not only used as cement mixture, also it is used to prepare lightweight fine aggregate, improves it and comprehensively utilize range.Yin Shan
Coral chiltern is light, concave-convex surface is porous, rough surface, and water imbibition is high so that the mobility of concrete is deteriorated, to concrete slump
It is affected.But porous, roughness properties combine it preferably with other materials, to improve concrete strength.And it is recessed
Convex stick stone clay mine tailing is the aqueous rich magnesium aluminosilicate clays mineral of a kind of layer of chain structure, and Concave-convex clay rod soil property is thin
Greasy, water imbibition is strong, has viscosity and plasticity when wet, is conducive to the bonding between raw material, can improve granule strength and the hole of aggregate
Gap rate.The combined use of coral sand and Concave-convex clay rod tailing respectively plays independent effect, while interdependence again, shape
It at an entirety, displays one's respective advantages, makes up the drawbacks of bringing, to improve the intensity of concrete and the flowing of concrete
Property.
Fine aggregate haydite is prepared using building waste, coral sand, municipal sludge, Concave-convex clay rod tailing and stone material tailing
With coarse aggregate haydite, the demand of concrete high-strength, lightweight is not only met, the utilization scope of solid-state castoff is also expanded.
2. high strength light aggregate concrete of the invention, in additive, addition graphene, lignocellulosic and carbon fiber,
On the one hand improve the defect of municipal sludge and building waste poor plasticity, on the other hand, the further intensity for improving concrete.
Graphite is a kind of known most thin two-dimensional material, and excellent with high specific surface area, superpower intensity etc.
Point.Also there is good toughness simultaneously, the higher intensity of concrete and preferable compatibility can be assigned.Carbon fiber is a kind of high
The new fiber materials of intensity, light-weight, intensity is higher, and carbon fiber surface is coarse, is conducive to its knot with other materials
It closes, so the addition of carbon fiber can be further improved the intensity of lightweight aggregate concrete；But the surface of carbon fiber is more stable, institute
To be not easy to be dispersed in concrete, the dispersion degree of carbon fiber is can be improved in the addition of dispersing agent, to help to improve concrete
Intensity, the mobility of concrete can be improved to cement granules, reduce the flocculation of lightweight aggregate concrete the addition of water-reducing agent.Wood
The addition lignocellulosic of matter cellulose can prevent concrete cracking.
3. high strength light aggregate concrete of the invention, compatible with other materials because the activity of stone material tailing is lower
Property it is poor, after first carrying out modification, activity is improved, and improves its activity and viscosity, improve with the compatibility of other materials, thus
Improve the intensity and toughness of concrete.
4. high strength light aggregate concrete of the invention, has the characteristics that lightweight, high-strength, Building wood can be used in extensively
In material, especially apply in preparing lightweight wall plate.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to
Limit the present invention.
Embodiment 1
A kind of high strength light aggregate concrete, in parts by weight, including following raw material:
500 parts of cementitious material, 500 parts of lightweight fine aggregate, 600 parts of lightweight coarse aggregate, 6 parts of additive, 160 parts of water.
The cementitious material is made of the clinker of 60% mass fraction and the cement mixture of 40% mass fraction,
Stone material tailing, living construction rubbish powder and the desulfurized gypsum composition that the cement mixture mass ratio is 15:10:1.
The lightweight fine aggregate includes the fine aggregate haydite of 70% mass fraction and the living construction rubbish of 30% mass fraction
Rubbish powder；The lightweight coarse aggregate is according to mass fraction meter, including following components: coarse aggregate haydite 60%, stone material tailing 25%, pottery
Porcelain waste residue 10%, expanded graphite 5%；The fine aggregate haydite and coarse aggregate haydite are according to mass percent meter, including following original
Material: building waste 30%, municipal sludge 15%, Concave-convex clay rod tailing 10%, coral sand 10%, stone material tailing 15%, life
Lime 8%, sawdust 7%, clay 5%.
The additive is according to mass fraction meter, including following components: water-reducing agent 25%, dispersing agent 25%, graphene
5%, lignocellulosic 25%, carbon fiber 20%.
The living construction rubbish powder is that building waste is first crushed to and mixed with quick lime simultaneously grinding, then at 680 DEG C
What lower heating and calcining 3h was activated.
The fine aggregate pottery sand partial size is less than 5mm, and the coarse aggregate haydite particle size range is 5mm~15mm.
The stone material tailing is granite tailing.
The water-reducing agent is polycarboxylate water-reducer, solid content 25%, water-reducing rate 35%.Clinker is 42.5 silicic acid
Salt cement clinker.The dispersing agent is hydroxypropyl methyl cellulose.
Preparation method, the following steps are included:
S1. cementitious material prepares: the clinker and cement mixture being mixed and stirred for uniformly, to obtain gelling material
Material.
S2. lightweight fine aggregate prepares: preparing light ceramic and living construction powder, is then uniformly mixed, the water for being added 2/3 is used
Amount, obtains lightweight fine aggregate standby material.
S3. lightweight coarse aggregate prepares: preparing thick matter haydite, and mixes with stone material tailing, ceramic waste residue, expanded graphite
It is even, 1/3 water consumption is added, obtains lightweight coarse aggregate standby material.
S4. additive prepares: the water-reducing agent, dispersing agent, graphene, lignocellulosic and carbon fiber are mixed and stirred for
Uniformly,
Wherein, the preparation method of the fine aggregate haydite and coarse aggregate haydite the following steps are included:
(1) prepare raw material according to the mass percent, by building waste, Concave-convex clay rod tailing, coral sand, stone material
Tailing, quick lime, sawdust and clay mixing, drying, it is broken to obtain premix, by municipal sludge deodorization, then with the premix
Material mixing is closed, the weight percentage for stirring and controlling moisture is 25%, obtains mixture.
(2) mixture is pressed into raw material ball, then, the shape of the raw material ball is screened, is filtered out respectively
Raw material ball of the partial size in 5mm or less and 5mm~15mm.
(3) raw material ball is fired respectively, obtains fine aggregate haydite and coarse aggregate haydite.
Specific sintering procedure are as follows: first by raw material ball with the speed of 5 DEG C/min from room temperature to 250 DEG C, keep the temperature 15min,
Then 1180 DEG C are heated to the rate of 6 DEG C/min, and keep the temperature 10min, be then cooled to 500 again with the rate of 10 DEG C/min
DEG C, cooled to room temperature.
In the fine aggregate haydite and coarse aggregate haydite, stone material tailing first passes through pretreatment, the preprocessing process are as follows: will
Stone material tailing is crushed, is ground, and citrate is then added and sodium sulfanilate carries out secondary grinding；The citrate of addition
With sodium sulfanilate is respectively stone material tailing quality 1% and 0.5%.
S5. prepared by concrete: by the lightweight fine aggregate standby material, lightweight coarse aggregate standby material, cementitious material and additional
Agent standby material is mixed evenly, and molding, maintenance obtain high strength lightweight aggregate concrete finished product.
Embodiment 2
A kind of high strength light aggregate concrete, in parts by weight, including following raw material:
400 parts of cementitious material, 450 parts of lightweight fine aggregate, 650 parts of lightweight coarse aggregate, 7 parts of additive, 150 parts of water.
The cementitious material is made of the clinker of 75% mass fraction and the cement mixture of 25% mass fraction,
Stone material tailing, living construction rubbish powder and the desulfurized gypsum composition that the cement mixture mass ratio is 20:10:1.
The lightweight fine aggregate includes the fine aggregate haydite of 80% mass fraction and the living construction rubbish of 20% mass fraction
Rubbish powder；The lightweight coarse aggregate is according to mass fraction meter, including following components: coarse aggregate haydite 75%, stone material tailing 10%, pottery
Porcelain waste residue 10%, expanded graphite 5%；The fine aggregate haydite and coarse aggregate haydite are according to mass percent meter, including following original
Material: building waste 25%, municipal sludge 10%, Concave-convex clay rod tailing 10%, coral sand 15%, stone material tailing 20%, life
Lime 5%, sawdust 10%, clay 5%.
The additive is according to mass fraction meter, including following components: water-reducing agent 30%, dispersing agent 20%, graphene
15%, lignocellulosic 25%, carbon fiber 10%.
The living construction rubbish powder is that building waste is first crushed to and mixed with quick lime simultaneously grinding, then at 700 DEG C
What lower heating and calcining 2h was activated.
The fine aggregate pottery sand partial size is less than 5mm, and the coarse aggregate haydite particle size range is 5mm~15mm.
The stone material tailing is Quartz Tails and potassium albite tailing.
In the fine aggregate haydite and coarse aggregate haydite, stone material tailing first passes through pretreatment, the preprocessing process are as follows: will
Stone material tailing is crushed, is ground, and citrate is then added and sodium sulfanilate carries out secondary grinding；The citrate of addition
With sodium sulfanilate is respectively stone material tailing quality 0.5% and 0.5%.
The water-reducing agent is polycarboxylate water-reducer, solid content 30%, water-reducing rate 35%.Clinker is 42.5 silicic acid
Salt cement clinker.The dispersing agent is hydroxypropyl methyl cellulose.
Wherein, the preparation method of the fine aggregate haydite and coarse aggregate haydite the following steps are included:
(1) prepare raw material according to the mass percent, by building waste, Concave-convex clay rod tailing, coral sand, stone material
Tailing, quick lime, sawdust and clay mixing, drying, it is broken to obtain premix, by municipal sludge deodorization, then with the premix
Material mixing is closed, the weight percentage for stirring and controlling moisture is 30%, obtains mixture.
(2) mixture is pressed into raw material ball, then, the shape of the raw material ball is screened, is filtered out respectively
Raw material ball of the partial size in 5mm or less and 5mm~15mm.
(3) raw material ball is fired respectively, obtains fine aggregate haydite and coarse aggregate haydite.
Specific sintering procedure are as follows: first by raw material ball with the speed of 6 DEG C/min from room temperature to 300 DEG C, keep the temperature 20min,
Then 1200 DEG C are heated to the rate of 10 DEG C/min, and keep the temperature 15min, be then cooled to 600 again with the rate of 15 DEG C/min
DEG C, cooled to room temperature.
The preparation method is the same as that of Example 1.
Embodiment 3
A kind of high strength light aggregate concrete, in parts by weight, including following raw material:
550 parts of cementitious material, 600 parts of lightweight fine aggregate, 500 parts of lightweight coarse aggregate, 5 parts of additive, 170 parts of water.
The cementitious material is made of the clinker of 55% mass fraction and the cement mixture of 45% mass fraction,
Stone material tailing, living construction rubbish powder and the desulfurized gypsum composition that the cement mixture mass ratio is 10:10:1.
The lightweight fine aggregate includes the fine aggregate haydite of 60% mass fraction and the living construction rubbish of 40% mass fraction
Rubbish powder；The lightweight coarse aggregate is according to mass fraction meter, including following components: coarse aggregate haydite 50%, stone material tailing 30%, pottery
Porcelain waste residue 15%, expanded graphite 5%；The fine aggregate haydite and coarse aggregate haydite are according to mass percent meter, including following original
Material: building waste 40%, municipal sludge 10%, Concave-convex clay rod tailing 5%, coral sand 5%, stone material tailing 20%, raw stone
Grey 10%, sawdust 5%, clay 5%.
The additive is according to mass fraction meter, including following components: water-reducing agent 30%, dispersing agent 25%, graphene
15%, lignocellulosic 20%, carbon fiber 10%.
The living construction rubbish powder is that building waste is first crushed to and mixed with quick lime simultaneously grinding, then at 650 DEG C
What lower heating and calcining 4h was activated.
The fine aggregate pottery sand partial size is less than 5mm, and the coarse aggregate haydite particle size range is 5mm~15mm.
The stone material tailing is basalt tailing.
In the fine aggregate haydite and coarse aggregate haydite, stone material tailing first passes through pretreatment, the preprocessing process are as follows: will
Stone material tailing is crushed, is ground, and citrate is then added and sodium sulfanilate carries out secondary grinding；The citrate of addition
With sodium sulfanilate is respectively stone material tailing quality 0.6% and 0.2%.
The water-reducing agent is polycarboxylate water-reducer, solid content 20%, water-reducing rate 32%.Clinker is 42.5 silicic acid
Salt cement clinker.The dispersing agent is hydroxypropyl methyl cellulose.
The preparation method is the same as that of Example 1.
Embodiment 4
A kind of high strength light aggregate concrete, compared with Example 3, the fine aggregate haydite and coarse aggregate haydite are according to matter
Measure percentages, including following raw material: building waste 35%, municipal sludge 10%, Concave-convex clay rod tailing 5%, coral sand
10%, stone material tailing 20%, quick lime 10%, sawdust 5%, clay 5%.Other raw materials are identical with preparation method.
Embodiment 5
A kind of high strength light aggregate concrete, compared with Example 3, the fine aggregate haydite and coarse aggregate haydite are according to matter
Measure percentages, including following raw material: building waste 35%, municipal sludge 10%, Concave-convex clay rod tailing 5%, coral sand
12%, stone material tailing 18%, quick lime 10%, sawdust 5%, clay 5%.Other raw materials are identical with preparation method.
Embodiment 6
A kind of high strength light aggregate concrete, compared with Example 3, the fine aggregate haydite and coarse aggregate haydite are according to matter
Measure percentages, including following raw material: building waste 35%, municipal sludge 10%, Concave-convex clay rod tailing 5%, coral sand
15%, stone material tailing 15%, quick lime 10%, sawdust 5%, clay 5%.Other raw materials are identical with preparation method.
Embodiment 7
A kind of high strength light aggregate concrete, compared with Example 3, the fine aggregate haydite and coarse aggregate haydite are according to matter
Measure percentages, including following raw material: building waste 32%, municipal sludge 10%, Concave-convex clay rod tailing 5%, coral sand
18%, stone material tailing 15%, quick lime 10%, sawdust 5%, clay 5%.Other raw materials are identical with preparation method.
Embodiment 8
A kind of lightweight wall plate, including cement fibrolite plate layer and lightweight concrete layer are first laid with cement fibrolite plate layer web,
It is laid with and places the reinforcement component for preparing, it is then that high strength light aggregate concrete prepared by embodiment 1 is so uniform that be cast in steel
It in rib component, and places under repair, demoulds to surface, molding is after standard curing 28d to get lightweight wall plate.
Comparative example 1
A kind of high strength light aggregate concrete, in parts by weight, including following raw material:
500 parts of cementitious material, 500 parts of lightweight fine aggregate, 600 parts of lightweight coarse aggregate, 6 parts of additive, 160 parts of water.With reality
It applies example 1 to compare, building waste powder is directly utilized without activity processing.
Comparative example 2
A kind of high strength light aggregate concrete, in parts by weight, including following raw material:
500 parts of cementitious material, 500 parts of lightweight fine aggregate, 600 parts of lightweight coarse aggregate, 6 parts of additive, 160 parts of water.With reality
It applies example 1 to compare, stone material tailing is directly utilized without pre-processing.
Comparative example 3
A kind of high strength light aggregate concrete, in parts by weight, including following raw material:
500 parts of cementitious material, 500 parts of lightweight fine aggregate, 600 parts of lightweight coarse aggregate, 6 parts of additive, 160 parts of water.With reality
It applies example 1 to compare, Concave-convex clay rod tailing is not contained in the fine aggregate haydite and coarse aggregate haydite.
Comparative example 4
A kind of high strength light aggregate concrete, in parts by weight, including following raw material:
500 parts of cementitious material, 500 parts of lightweight fine aggregate, 600 parts of lightweight coarse aggregate, 6 parts of additive, 160 parts of water.With reality
It applies example 1 to compare, coral sand is not contained in the fine aggregate haydite and coarse aggregate haydite.
Comparative example 5
A kind of high strength light aggregate concrete, in parts by weight, including following raw material:
500 parts of cementitious material, 500 parts of lightweight fine aggregate, 600 parts of lightweight coarse aggregate, 6 parts of additive, 160 parts of water.With reality
It applies example 1 to compare, municipal sludge is not contained in the fine aggregate haydite and coarse aggregate haydite.
Comparative example 6
A kind of high strength light aggregate concrete, in parts by weight, including following raw material:
500 parts of cementitious material, 500 parts of lightweight fine aggregate, 600 parts of lightweight coarse aggregate, 6 parts of additive, 160 parts of water.With reality
It applies example 1 to compare, graphene is not contained in the additive.
Performance test:
Embodiment 1-7 and comparative example 1-6 are tested according to test method (JG/T266-2011), as a result such as table 1:
1 embodiment 1-7 of table and comparative example 1-6 the performance test results
The concrete of the present invention it can be seen from embodiment 1-3 and table 1, by stone material tailing, building waste, city
Sludge and ceramic waste residue rationally use in gel rubber material and aggregate, find in the process for preparation of concrete, aggregate
Surrounding slurry package uniformly, does not occur laminated segregation phenomenon, mixture fluidity is relatively good.So as to improve the mechanics of concrete
Performance and stability, compression strength is higher within 28 days.
Because coral sand is light, concave-convex surface is porous, rough surface it can be seen from embodiment 3-7, water imbibition is high, so that
The mobility of concrete is deteriorated, and is affected to concrete slump.But porous, roughness properties make its with other materials more
It combines well, to improve concrete strength.So wanting its dosage of strict control, it can be seen that fine aggregate haydite and coarse aggregate
Addition 12~15% is preferable in haydite.
Separation trend is presented in concrete mortar and aggregate it can be seen from embodiment 1 and comparative example 1-3, there is segregation phenomenon.
Illustrate untreated building waste powder and stone material tailing poor compatibility, directly affects the compression strength of concrete.And city is dirty
The use of mud can be used in conjunction with stone material tailing and building waste, can effectively lubricating aggregate contact point, in pressure forming
When, it is in close contact aggregate, the compatibility between aggregate is improved, so as to improve the stability of concrete.
Separation trend is presented in concrete mortar and aggregate it can be seen from embodiment 1 and comparative example 4, there is segregation phenomenon.It says
The poor compatibility of bright coral sand, the bad dispersibility with other materials, and the mobility of concrete is deteriorated, Concave-convex clay rod
Soil property is fine and smooth, and water imbibition is strong, has viscosity and plasticity when wet, is conducive to the bonding between raw material, is capable of lacking for obvious coral sand
It falls into.
It is light, concave-convex surface is porous although the poor compatibility of coral sand it can be seen from embodiment 1 and comparative example 5
Characteristic be conducive to keep the lightweight of aggregate, and combine it preferably with other materials by porous, roughness properties, thus
Improve concrete strength.
Graphene can preferably improve the intensity of concrete it can be seen from embodiment 1 and comparative example 6.
Above description is the detailed description for the present invention preferably possible embodiments, but embodiment is not limited to this hair
Bright patent claim, it is all the present invention suggested by technical spirit under completed same changes or modifications change, should all belong to
In the covered the scope of the patents of the present invention.
Claims (10)
1. a kind of high strength light aggregate concrete, which is characterized in that in parts by weight, including following raw material:
350~550 parts of cementitious material, 450~600 parts of lightweight fine aggregate, 500~650 parts of lightweight coarse aggregate, additive 5~7
Part, 150~170 parts of water；
The cementitious material is by the clinker of 55~75% mass fractions and the cement mixture of 25~45% mass fractions
Composition, the cement mixture mass ratio are 10~20:5~15:1 stone material tailing, living construction rubbish powder and desulfurization stone
Cream composition；
The lightweight fine aggregate includes that the fine aggregate haydite of 60~80% mass fractions and the activity of 20~40% mass fractions are built
Building refuse powder；The lightweight coarse aggregate is according to mass fraction meter, including following components: coarse aggregate haydite 50~75%, stone material tail
Mine 10~30%, ceramic waste residue 10~20%, expanded graphite 3~8%；The fine aggregate haydite and coarse aggregate haydite are according to quality
Percentages, including following raw material: building waste 20~50%, municipal sludge 10~20%, Concave-convex clay rod tailing 5~
15%, coral sand 5~15%, stone material tailing 10~20%, quick lime 5~10%, sawdust 5~10%, clay 1~10%；
The additive is according to mass fraction meter, including following components: water-reducing agent 20~30%, dispersing agent 20~30%, graphite
Alkene 5~15%, lignocellulosic 20~30%, carbon fiber 10~30%；
The living construction rubbish powder is that building waste is first crushed to and mixed with quick lime simultaneously grinding, then 650~700
2~4h of heating and calcining is activated at DEG C.
2. high strength light aggregate concrete according to claim 1, it is characterised in that, the fine aggregate pottery sand partial size is less than
5mm, the coarse aggregate haydite particle size range are 5mm~15mm.
3. high strength light aggregate concrete according to claim 1, it is characterised in that, the fine aggregate haydite and coarse aggregate
The preparation method of haydite the following steps are included:
(1) prepare raw material according to the mass percent, by building waste, Concave-convex clay rod tailing, coral sand, stone material tail
Mine, quick lime, sawdust and clay mixing, drying, it is broken to obtain premix, by municipal sludge deodorization, then with the premixing
Material mixing, the weight percentage for stirring and controlling moisture is 20~30%, obtains mixture；
(2) mixture is pressed into raw material ball, then, the shape of the raw material ball is screened, filters out partial size respectively
In the raw material ball of 5mm or less and 5mm~15mm；
(3) raw material ball is fired respectively, obtains fine aggregate haydite and coarse aggregate haydite.
4. high strength light aggregate concrete according to claim 3, which is characterized in that in step (3), specific sintering procedure
Are as follows: first by raw material ball with the speed of 2~6 DEG C/min from room temperature to 250~300 DEG C, keep the temperature 10~20min, then with 5~
The rate of 10 DEG C/min is heated to 1160~1200 DEG C, and keeps the temperature 5~15min, is then dropped again with the rate of 10~15 DEG C/min
Temperature is to 500~600 DEG C, cooled to room temperature.
5. high strength light aggregate concrete according to claim 1, it is characterised in that, the stone material tailing is granite tail
One of mine, Quartz Tails, potassium albite tailing, basalt tailing are a variety of.
6. high strength light aggregate concrete according to claim 1, it is characterised in that, the fine aggregate haydite and coarse aggregate
In haydite, stone material tailing first passes through pretreatment, the preprocessing process are as follows: crushes stone material tailing, grinding, lemon is then added
Hydrochlorate and sodium sulfanilate carry out secondary grinding；The citrate and sodium sulfanilate of addition are respectively stone material tailing
The 0.5~1% of quality and 0.1~1%.
7. high strength light aggregate concrete according to claim 1, it is characterised in that, the water-reducing agent is polycarboxylic acids diminishing
Agent, solid content are 20~30%, and water-reducing rate is 32~35%.
8. high strength light aggregate concrete according to claim 1, it is characterised in that, clinker is 42.5 silicate cements
Mud clinker.
9. high strength light aggregate concrete according to claim 1, it is characterised in that, the dispersing agent is hydroxypropyl methyl
Cellulose.
10. the preparation method of -9 any high strength light aggregate concretes according to claim 1, which is characterized in that including
Following steps:
S1. cementitious material prepares: the clinker and cement mixture being mixed and stirred for uniformly, to obtain cementitious material；
S2. lightweight fine aggregate prepares: light ceramic and living construction powder are prepared, is then uniformly mixed, 2/3 water consumption is added,
Obtain lightweight fine aggregate standby material；
S3. lightweight coarse aggregate prepares: preparing thick matter haydite, and is uniformly mixed with stone material tailing, ceramic waste residue, expanded graphite, adds
The water consumption for entering 1/3 obtains lightweight coarse aggregate standby material；
S4. additive prepares: the water-reducing agent, dispersing agent, graphene, lignocellulosic and carbon fiber are mixed and stirred for
It is even, obtain additive standby material；
S5. prepared by concrete: the lightweight fine aggregate standby material, lightweight coarse aggregate standby material, cementitious material and additive is standby
Materials are mixed evenly, and molding, maintenance obtain high strength lightweight aggregate concrete finished product.
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| WO2020063203A1 (en) | 2020-04-02 |
| CN109053109B (en) | 2019-08-06 |
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