CN106673592A - Method for preparing concrete pavement brick by using recycled aggregate of construction waste - Google Patents
Method for preparing concrete pavement brick by using recycled aggregate of construction waste Download PDFInfo
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- CN106673592A CN106673592A CN201710014258.0A CN201710014258A CN106673592A CN 106673592 A CN106673592 A CN 106673592A CN 201710014258 A CN201710014258 A CN 201710014258A CN 106673592 A CN106673592 A CN 106673592A
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- pavement brick
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- road pavement
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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
- C04B28/30—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 magnesium cements or similar cements
- C04B28/32—Magnesium oxychloride cements, e.g. Sorel cement
-
- 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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/16—Waste materials; Refuse from building or ceramic industry
-
- 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
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Civil Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Road Paving Structures (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention relates to a method for preparing a concrete pavement brick by using recycled aggregate of construction waste. The method is characterized in that a concrete pavement is prepared from the following raw materials in parts by weight: 60-80 parts of recycled aggregate of the construction waste, 25-35 parts of superfine 52.5 Portland cement, 10-15 parts of a gelatinizing agent, 0.5-2 parts of a superplasticizer, 0.5-2 parts of a reinforcing agent, 0.1-0.5 part of a dispersing agent and 0.1-1 part of a retarder. The quality of the concrete pavement brick is ensured by adopting the construction waste as the aggregate and adjusting the ingredients and quality of the cement and an additive; the prepared concrete pavement brick has the characteristics of high strength, good abrasive resistance, stable quality, long service life, low cost and the like; and the concrete pavement brick is prepared by adopting the construction waste as the aggregate, so that the construction waste is comprehensively utilized to turn the waste into treasure, reclamation of the construction waste is achieved, the ecological environment is improved, and the aims of protecting the environment, saving resources and achieving low-carbon economy are achieved.
Description
Technical field
It is more particularly to a kind of to prepare coagulation using construction refuse regenerated aggregate the invention belongs to building material technical field
The method of dirt road face brick.
Background technology
Concrete road pavement brick of the prior art be with cement and stone as main raw material(s), it is processed, pressurization or other
Moulding process is made variously-shaped concrete road pavement brick, and concrete road pavement brick is mainly used in laying urban road, pavement, city
Block, plate of the concrete road surfaces such as city square and ground surface works etc..Pavior brick is exposed in complicated external environment due to long-time,
The reasons such as water erosion, wind corruption, temperature change, friction, the color for easily making it lose script, the problems such as aesthetic degree declines, nothing
Method ensure construction quality, and pavior brick service life.
With Chinese national economy stable development and the propulsion of urbanization paces, construction industry high speed development brings therewith
Be building waste quantity sustainable growth.According to statistics, China produces about 1,000,000,000 tons of building waste every year at present, accounts for municipal refuse total
30~40% or so of amount, the resource utilization rate of these building wastes is less than 5%.A large amount of building wastes stacked or fill are invaded
Account for soil, pollute water and soil resources and atmospheric environment, cause serious ecological load, and at the same time, as construction material from
Right resource increasingly depleted.So using the resource attribute of building waste, it is to protect to prepare renewable building material using reasonable process
Shield resource, the necessary ways of sustainable development.
At present, disclosed building waste handling process and technology mainly have three classes.One is work after building waste simple crushing
It is backfilling material, two is after construction waste crushing is sieved, to prepare aggregate, non-burning brick or materials for wall, and three is to extract to build
A certain or two kinds of components prepare the construction materials such as Machine-made Sand, discarded concrete Binder Materials, mixing material in building refuse.At these
There is the deficiency of several aspects in science and engineering skill and technology.One be using after building waste simple crushing as backfilling material, added value pole
It is low, and more than after certain transportation range because cost of transportation is too high without value.Two is by the screening of building waste Integral-crushing
Afterwards, aggregate, non-burning brick or materials for wall are prepared, due to the separation of sand, clay brick and concrete in building waste cannot be realized, and
These component nature differences are big, cause that aggregate water absorption rate is big, low intensity and be difficult with, non-burning brick water absorption rate is big, durable
Property poor, materials for wall low intensity, poor durability.Three is to prepare construction material using a certain or two kinds of components in building waste,
Building waste full constituent recycling can not be realized, additionally, bright for not proposed from the separation in building waste using component
True industrial technology scheme.Four is imperfect and complex handling process, it is difficult to commercial Application.
The content of the invention
It is an object of the invention to provide a kind of method that utilization construction refuse regenerated aggregate prepares concrete road pavement brick, the party
Method is prepared using building waste as aggregate, adjusts cement and additive composition and quality, it is ensured that the matter of concrete road pavement brick
Amount, the concrete road pavement brick of preparation has intensity high, and wearability is good, steady quality, long service life, low cost.
What the present invention was realized in：
A kind of method that utilization construction refuse regenerated aggregate prepares concrete road pavement brick, it is characterised in that the concrete road surface
Raw material including following parts by weight：Construction refuse regenerated aggregate 60-80 parts, 25-35 parts of ultra-fine 52.5 portland cement, gelling
Agent 10-15 parts, high efficiency water reducing agent 0.5-2 parts, reinforcing agent 0.5-2 parts, dispersant 0.1-0.5 parts, retarder 0.1-1 parts；
The preparation method of concrete road pavement brick comprises the following steps：
S1, construction refuse regenerated aggregate, ultra-fine 52.5 portland cement, gelling agent, high efficiency water reducing agent and suitable quantity of water are added first
Enter in mixer and stir 3-5 minute, be subsequently adding reinforcing agent, dispersant and retarder and continue stirring 5-10 minutes, with appropriate
Water adjusts mix denseness, and the mixed material that will be stirred vibrates hot-press solidifying shaping, 15- in being fitted into concrete road surface bricks die
The demoulding after 20 hours, obtains concrete road pavement brick base substrate, vibration frequency is 4000-4500 times/min, time of vibration is 60-90s,
Briquetting pressure is 30-40kN；
Concrete road pavement brick base substrate after S2, shaping carries out steam curing, and temperature is 45-60 DEG C, steam when steam constant temperature is conserved
Curing condition is：Heat up 2 hours, then thermostatic curing 5 hours, finally cooling maintenance 2 hours；
Natural curing is carried out after S3, steam curing are complete, using artificial or mechanical spray pattern with daily 2-3 times during natural curing
Frequency sprayed water, natural curing obtains concrete road pavement brick after 14-28 days.
Further preferably, the construction refuse regenerated aggregate includes coarse aggregate and fine aggregate, and the coarse aggregate size is 4-
8mm, fine aggregate particle diameter is 2.5-4mm, and the weight ratio of coarse aggregate and fine aggregate is 2-3:1-2.
Further preferably, 52.5 portland cements are carried out secondary being ground to and compare table by the ultra-fine 52.5 portland cement position
Area is more than 10000cm2/g.There is excellent permeability and concrete castability using ultra-fine 52.5 portland cement, with higher strong
Degree and durability.
Further preferably, the gelling agent for light magnesium oxide, magnesium chloride and magnesium sulfate mixture, light magnesium oxide,
The mass ratio of magnesium chloride and magnesium sulfate is 60-70:5-15:10-20.
Further preferably, the water reducer includes the raw material of following weight portion：Acrylic acid 30-40 parts, ammonium persulfate 10-15
Part, organic silicon emulsion 5-10 parts, triethanolamine 2-6 parts, molasses 1-4 parts, dodecyl sodium sulfate 0.5-2 parts.Water reducer is one
Plant under conditions of maintaining concrete slump constant, the concrete admixture of mixing water amount can be reduced.Add water reducer also
The workability of concrete can be improved, unit consumption of water is reduced, improve the mobility of concrete mix, reduced unit cement and use
Amount, saves cement.
Further preferably, described reinforcing agent includes wollastonite powder and redispersable latex powder, wollastonite powder and redispersible breast
The mass ratio of rubber powder is 1:1-2.Reinforcing agent can improve intensity, apparent mass and the processing characteristics of concrete road pavement brick.
Further preferably, the dispersant includes following raw material：Oxirane, calcium lignosulfonate, sodium sulphate, hydroxide
Sodium and silicone；The mass ratio of oxirane, calcium lignosulfonate, sodium sulphate, NaOH and silicone is 3-4:1-2:1:
0.5:0.5.Dispersant promotes material particles to be dispersed in medium, while can also prevent the sedimentation and cohesion of particle, improves
The processing characteristics of concrete road pavement brick.
Further preferably, the retarder is boric acid or citric acid.The purpose that people's retarder is mixed in concrete be in order to
Extend the hydration and hardening time of cement, fresh concrete is kept plasticity in a long time, so as to adjust fresh concrete
Setting time.
The prominent substantive distinguishing features of the present invention and significant progress are：
1st, the present invention adjusts cement and additive composition and quality, it is ensured that concrete road surface using building waste as aggregate
The quality of brick, the concrete road pavement brick of preparation has intensity high, and wearability is good, steady quality, long service life, the low spy of cost
Point, and concrete road pavement brick is prepared as aggregate using building waste, comprehensive utilization building waste is turned waste into wealth, realizes building
The resource of building refuse, improves the ecological environment, and reaches environmental protection, economizes on resources, the purpose of invention low-carbon economy.
2nd, the present invention replaces part portland cement to prepare concrete road pavement brick using chlorine oxygen magnesium gelling agent, hence it is evident that improve
The hygroscopicity of concrete road pavement brick, improves the dimensionally stable of concrete road pavement brick, reduces manufacturing cost, reduces cement to ring
The pollution and destruction in border, are a kind of solidifying agent materials of green.
3rd, the present invention has excellent permeability and concrete castability using ultra-fine 52.5 portland cement, can penetrate into and has been generally acknowledged that
Fine sand flour sand mixed layer, silty sand ground and powder soil horizon that cement granules cannot permeate, it is possible to increase the intensity of concrete road pavement brick and
Durability.
4th, the present invention adds reinforcing agent and retarder, while concrete plasticity is improved, can strengthen concrete road surface
The intensity of brick.Specific embodiment
The present invention is made the following instructions with reference to embodiment.
Embodiment 1
Prepare the raw material of concrete road pavement brick：60 parts of construction refuse regenerated aggregate, 25 parts of ultra-fine 52.5 portland cement, gelling agent
10 parts, 0.5 part of high efficiency water reducing agent, 0.5 part of reinforcing agent, 0.1 part of dispersant, 0.1 part of retarder；
The preparation method of concrete road pavement brick comprises the following steps：
S1, construction refuse regenerated aggregate, ultra-fine 52.5 portland cement, gelling agent, high efficiency water reducing agent and suitable quantity of water are added first
Enter in mixer and stir 3-5 minute, be subsequently adding reinforcing agent, dispersant and retarder and continue stirring 5-10 minutes, with appropriate
Water adjusts mix denseness, and the mixed material that will be stirred vibrates hot-press solidifying shaping, 15- in being fitted into concrete road surface bricks die
The demoulding after 20 hours, obtains concrete road pavement brick base substrate, vibration frequency is 4000-4500 times/min, time of vibration is 60-90s,
Briquetting pressure is 30-40kN；
Concrete road pavement brick base substrate after S2, shaping carries out steam curing, and temperature is 45-60 DEG C, steam when steam constant temperature is conserved
Curing condition is：Heat up 2 hours, then thermostatic curing 5 hours, finally cooling maintenance 2 hours；
Natural curing is carried out after S3, steam curing are complete, using artificial or mechanical spray pattern with daily 2-3 times during natural curing
Frequency sprayed water, natural curing obtains concrete road pavement brick after 14-28 days.
Embodiment 2
Prepare the raw material of concrete road pavement brick：65 parts of construction refuse regenerated aggregate, 28 parts of ultra-fine 52.5 portland cement, gelling agent
11 parts, 0.8 part of high efficiency water reducing agent, 0.8 part of reinforcing agent, 0.2 part, retarder 0.1-1 parts of dispersant；Preparation method and embodiment 1
It is identical.
Embodiment 3
Prepare the raw material of concrete road pavement brick：70 parts of construction refuse regenerated aggregate, 30 parts of ultra-fine 52.5 portland cement, gelling agent
12 parts, 1.5 parts of high efficiency water reducing agent, 1.5 parts of reinforcing agent, 0.3 part, retarder 0.1-1 parts of dispersant；Preparation method and embodiment 1
It is identical.
Embodiment 4
Prepare the raw material of concrete road pavement brick：75 parts of construction refuse regenerated aggregate, 32 parts of ultra-fine 52.5 portland cement, gelling agent
14 parts, 1.8 parts of high efficiency water reducing agent, 1.8 parts of reinforcing agent, 0.4 part, retarder 0.1-1 parts of dispersant；Preparation method and embodiment 1
It is identical.
Embodiment 5
Prepare the raw material of concrete road pavement brick：80 parts of construction refuse regenerated aggregate, 35 parts of ultra-fine 52.5 portland cement, gelling agent
15 parts, 2 parts of high efficiency water reducing agent, 2 parts of reinforcing agent, 0.5 part of dispersant, 1 part of retarder；Preparation method is identical with embodiment 1.
The key technical indexes of the embodiment of the present invention（According to GB28635-2012）：
Illustrate that the performance technologies index such as compression strength, rupture strength, skid resistance, water absorption rate of concrete road pavement brick of the invention is equal
Meet national standard and professional standard.
Claims (8)
1. a kind of method that utilization construction refuse regenerated aggregate prepares concrete road pavement brick, it is characterised in that the concrete road
Face includes the raw material of following parts by weight：Construction refuse regenerated aggregate 60-80 parts, 25-35 parts of ultra-fine 52.5 portland cement, glue
Solidifying 10-15 parts, high efficiency water reducing agent 0.5-2 parts, reinforcing agent 0.5-2 parts, dispersant 0.1-0.5 parts, retarder 0.1-1 parts of agent；
The preparation method of concrete road pavement brick comprises the following steps：
S1, construction refuse regenerated aggregate, ultra-fine 52.5 portland cement, gelling agent, high efficiency water reducing agent and suitable quantity of water are added first
Enter in mixer and stir 3-5 minute, be subsequently adding reinforcing agent, dispersant and retarder and continue stirring 5-10 minutes, with appropriate
Water adjusts mix denseness, and the mixed material that will be stirred vibrates hot-press solidifying shaping, 15- in being fitted into concrete road surface bricks die
The demoulding after 20 hours, obtains concrete road pavement brick base substrate；
Concrete road pavement brick base substrate after S2, shaping carries out steam curing, and temperature is 45-60 DEG C, steam when steam constant temperature is conserved
Curing condition is：Heat up 2 hours, then thermostatic curing 5 hours, finally cooling maintenance 2 hours；
Natural curing is carried out after S3, steam curing are complete, using artificial or mechanical spray pattern with daily 2-3 times during natural curing
Frequency sprayed water, natural curing obtains concrete road pavement brick after 14-28 days.
2. the method that utilization construction refuse regenerated aggregate according to claim 1 prepares concrete road pavement brick, its feature exists
In：The construction refuse regenerated aggregate includes coarse aggregate and fine aggregate, and the coarse aggregate size is 4-8mm, and fine aggregate particle diameter is
The weight ratio of 2.5-4mm, coarse aggregate and fine aggregate is 2-3:1-2.
3. the method that utilization construction refuse regenerated aggregate according to claim 1 prepares concrete road pavement brick, its feature exists
In：52.5 portland cements are carried out the secondary specific surface area that is ground to and are more than by the ultra-fine 52.5 portland cement position
10000cm2/g。
4. the method that utilization construction refuse regenerated aggregate according to claim 1 prepares concrete road pavement brick, its feature exists
In：The gelling agent is the mixture of light magnesium oxide, magnesium chloride and magnesium sulfate, light magnesium oxide, magnesium chloride and magnesium sulfate
Mass ratio is 60-70:5-15:10-20.
5. the method that utilization construction refuse regenerated aggregate according to claim 1 prepares concrete road pavement brick, its feature exists
In：The water reducer includes the raw material of following weight portion：Acrylic acid 30-40 parts, ammonium persulfate 10-15 parts, organic silicon emulsion 5-
10 parts, triethanolamine 2-6 parts, molasses 1-4 parts, dodecyl sodium sulfate 0.5-2 parts.
6. the method that utilization construction refuse regenerated aggregate according to claim 1 prepares concrete road pavement brick, its feature exists
In：Described reinforcing agent includes wollastonite powder and redispersable latex powder, and the mass ratio of wollastonite powder and redispersable latex powder is 1:
1-2。
7. the method that utilization construction refuse regenerated aggregate according to claim 1 prepares concrete road pavement brick, its feature exists
In：The dispersant includes following raw material：Oxirane, calcium lignosulfonate, sodium sulphate, NaOH and silicone；Epoxy
The mass ratio of ethane, calcium lignosulfonate, sodium sulphate, NaOH and silicone is 3-4:1-2:1:0.5:0.5.
8. the method that utilization construction refuse regenerated aggregate according to claim 1 prepares concrete road pavement brick, its feature exists
In：The retarder is boric acid or citric acid.
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| CN107216078A (en) * | 2017-06-20 | 2017-09-29 | 合肥慧林建材有限公司 | A kind of concrete road pavement brick and preparation method thereof |
| CN107324744A (en) * | 2017-07-05 | 2017-11-07 | 合肥片美环保科技有限公司 | A kind of environment-friendlyroad road face brick and preparation method thereof |
| CN107352922A (en) * | 2017-08-23 | 2017-11-17 | 钟传新 | A kind of construction refuse regenerated concrete and preparation method thereof |
| CN107434399A (en) * | 2017-08-23 | 2017-12-05 | 侯玉德 | A kind of construction refuse regenerated pavior brick and preparation method thereof |
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