CN106673592B - The method for preparing concrete road pavement brick using construction refuse regenerated aggregate - Google Patents

The method for preparing concrete road pavement brick using construction refuse regenerated aggregate Download PDF

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CN106673592B
CN106673592B CN201710014258.0A CN201710014258A CN106673592B CN 106673592 B CN106673592 B CN 106673592B CN 201710014258 A CN201710014258 A CN 201710014258A CN 106673592 B CN106673592 B CN 106673592B
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parts
concrete road
road pavement
pavement brick
aggregate
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CN106673592A (en
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盛丹
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盛丹
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    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/30Compositions 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
    • C04B28/32Magnesium oxychloride cements, e.g. Sorel cement
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B18/00Use 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
    • C04B18/04Waste materials; Refuse
    • C04B18/16Waste materials; Refuse from building or ceramic industry
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474Uses not provided for elsewhere in C04B2111/00
    • C04B2111/0075Uses not provided for elsewhere in C04B2111/00 for road construction
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/50Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/91Use of waste materials as fillers for mortars or concrete

Abstract

The present invention relates to a kind of methods for preparing concrete road pavement brick using construction refuse regenerated aggregate, it is characterized in that, the concrete road surface includes the raw material of following parts by weight: 60-80 parts of construction refuse regenerated aggregate, 25-35 parts of ultra-fine 52.5 portland cement, 10-15 parts of gelling agent, 0.5-2 parts of high efficiency water reducing agent, 0.5-2 parts of reinforcing agent, 0.1-0.5 parts of dispersing agent, 0.1-1 parts of retarder.The present invention, as aggregate, is adjusted cement and additive ingredient and quality, ensure that the quality of concrete road pavement brick using building waste; the concrete road pavement brick of preparation has intensity high, and wearability is good, and quality is stablized; long service life, it is at low cost the features such as, and concrete road pavement brick is prepared as aggregate using building waste; comprehensive utilization building waste is turned waste into wealth; the recycling for realizing building waste, improves the ecological environment, reaches protection environment; it economizes on resources, the purpose of invention low-carbon economy.

Description

The method for preparing concrete road pavement brick using construction refuse regenerated aggregate
Technical field
The invention belongs to building material technical fields, prepare coagulation using construction refuse regenerated aggregate more particularly to a kind of The method of dirt road face brick.
Background technique
Concrete road pavement brick in the prior art be using cement and stone as main raw material(s), it is processed, pressurization or other Concrete road pavement brick of various shapes is made in moulding process, and concrete road pavement brick is mainly used for being laid with urban road, pavement, city The block of the concrete road surfaces such as city square and ground surface works, plate etc..Pavement brick due to being exposed in complicated external environment for a long time, The problems such as water erosion, wind corruption, temperature change, the reasons such as friction are easy the color for making it lose script, and aesthetic degree declines, nothing The service life of method guarantee construction quality and pavement brick.
With Chinese national economy stable development and the propulsion of urbanization paces, construction industry high speed development is brought therewith Be building waste quantity sustainable growth.According to statistics, China generates about 1,000,000,000 tons of building waste every year at present, and it is total to account for municipal refuse 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 filled 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 is increasingly depleted.So preparing renewable building material using reasonable process is to protect using the recycling attribute of building waste Protect resource, the necessary ways of sustainable development.
Currently, disclosed building waste treatment process and technology mainly have three classes.First is that making after building waste simple crushing It is built second is that preparing aggregate, non-burning brick or materials for wall after construction waste crushing screening third is that extracting for backfilling material A certain or two kinds of components prepare the construction materials such as Machine-made Sand, discarded concrete cementitious material, mixing material in building refuse.At these There are the deficiencies of several aspects for science and engineering skill and technology.First is that backfilling material, added value pole will be used as after building waste simple crushing It is low, and be more than certain transportation range after due to transportation cost is excessively high without utility value.Second is that building waste Integral-crushing is sieved Afterwards, aggregate, non-burning brick or materials for wall are prepared, due to cannot achieve sand in building waste, clay brick and the separation of concrete, and These component nature differences are big, lead to that aggregate water absorption rate is big, intensity is low and is difficult with, and non-burning brick water absorption rate is big, durable Property is poor, and materials for wall intensity is low, durability is poor.Third is that construction material is prepared using a certain or two kinds of components in building waste, It can not achieve building waste full constituent resource utilization, in addition, bright for not proposing using component from the separation in building waste True industrial technology scheme.Fourth is that treatment process is imperfect and complex, it is difficult to industrial application.
Summary of the invention
The object of the present invention is to provide a kind of method for preparing concrete road pavement brick using construction refuse regenerated aggregate, the party Method preparation, as aggregate, is adjusted cement and additive ingredient and quality, ensure that the matter of concrete road pavement brick using building waste Amount, the concrete road pavement brick of preparation have intensity high, and wearability is good, and quality is stablized, and long service life is at low cost.
The present invention is implemented as follows:
A method of concrete road pavement brick is prepared using construction refuse regenerated aggregate, which is characterized in that the concrete Road surface includes the raw material of following parts by weight: 60-80 parts of construction refuse regenerated aggregate, 25-35 parts of ultra-fine 52.5 portland cement, 10-15 parts of gelling agent, 0.5-2 parts of high efficiency water reducing agent, 0.5-2 parts of reinforcing agent, 0.1-0.5 parts of dispersing agent, 0.1-1 parts of retarder;
The preparation method of concrete road pavement brick includes the following steps:
S1, first by construction refuse regenerated aggregate, ultra-fine 52.5 portland cement, gelling agent, high efficiency water reducing agent and appropriate Water is added in blender and stir 3-5 minute, and reinforcing agent, dispersing agent and retarder is then added and continues to stir 5-10 minutes, with fitting The water of amount adjusts mix consistency, by the mixed material being stirred is fitted into the bricks die of concrete road surface vibration hot-press solidifying at Type demoulds after 15-20 hours, obtains concrete road pavement brick green body, vibration frequency is 4000-4500 times/min, time of vibration is 60-90s, briquetting pressure 30-40kN;
S2, concrete road pavement brick green body after molding carry out steam curing, and temperature is 45-60 DEG C when steam constant temperature conserves, Steam curing condition are as follows: heating 2 hours, then thermostatic curing 5 hours, finally cooling maintenance 2 hours;
Natural curing is carried out after S3, steam curing are complete, user's work or mechanical spray pattern are during natural curing with daily 2-3 frequency is sprayed water, and obtains concrete road pavement brick after natural curing 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 partial size are 2.5-4mm, and the weight ratio of coarse aggregate and fine aggregate is 2-3:1-2.
Further preferably, secondary be ground to of 52.5 portland cements progress is compared table by the ultra-fine 52.5 portland cement position Area is greater than 10000cm2/g.There is excellent permeability and concrete castability using ultra-fine 52.5 portland cement, have higher strong Degree and durability.
Further preferably, the gelling agent be 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-reducing agent includes the raw material of following parts by weight: 30-40 parts of acrylic acid, ammonium persulfate 10-15 Part, 5-10 parts of organic silicon emulsion, 2-6 parts of triethanolamine, 1-4 parts of molasses, 0.5-2 parts of dodecyl sodium sulfate.Water-reducing agent is one Kind can be reduced the concrete admixture of mixing water amount under conditions of maintaining concrete slump constant.Water-reducing agent is added also The workability of concrete can be improved, reduce unit consumption of water, improve the mobility of concrete mix, unit cement is reduced and use Amount saves cement.
Further preferably, the reinforcing agent includes wollastonite powder and redispersable latex powder, wollastonite powder and redispersible cream The mass ratio of rubber powder is 1:1-2.Reinforcing agent can be improved intensity, apparent mass and the processing performance of concrete road pavement brick.
Further preferably, the dispersing agent includes following raw material: ethylene oxide, calcium lignosulfonate, sodium sulphate, hydroxide Sodium and silicone;Ethylene oxide, calcium lignosulfonate, sodium sulphate, sodium hydroxide and silicone mass ratio be 3-4:1-2:1: 0.5:0.5.Dispersing agent promotes material particles to be dispersed in medium, while can also prevent the sedimentation and cohesion of particle, improves The processing performance of concrete road pavement brick.
Further preferably, the retarder is boric acid or citric acid.Mixed in concrete people's retarder purpose be in order to The hydration and hardening time for extending cement, fresh concrete is set to keep plasticity in a long time, to adjust fresh concrete Setting time.
Present invention substantive distinguishing features outstanding and significant progress are:
1, the present invention adjusts cement and additive ingredient and quality, ensure that concrete using building waste as aggregate The quality of pavement brick, the concrete road pavement brick of preparation have intensity high, and wearability is good, and quality is stablized, and long service life is at low cost The features such as, and concrete road pavement brick is prepared as aggregate using building waste, comprehensive utilization building waste is turned waste into wealth, real The recycling of existing building waste, improves the ecological environment, reaches protection environment, economize on resources, the purpose of invention low-carbon economy.
2, the present invention replaces part portland cement to prepare concrete road pavement brick using chlorine oxygen magnesium gelling agent, hence it is evident that improves 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.
3, 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 The impermeable fine sand flour sand mixed layer of cement granules, silty sand ground and powder soil horizon, can be improved concrete road pavement brick intensity and Durability.
4, reinforcing agent and retarder, which is added, in the present invention can enhance concrete road surface while improving concrete plasticity The intensity of brick.
Specific embodiment
The present invention is made the following instructions below 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, glue Solidifying 10 parts of agent, 0.5 part of high efficiency water reducing agent, 0.5 part of reinforcing agent, 0.1 part of dispersing agent, 0.1 part of retarder;
The preparation method of concrete road pavement brick includes the following steps:
S1, first by construction refuse regenerated aggregate, ultra-fine 52.5 portland cement, gelling agent, high efficiency water reducing agent and appropriate Water is added in blender and stir 3-5 minute, and reinforcing agent, dispersing agent and retarder is then added and continues to stir 5-10 minutes, with fitting The water of amount adjusts mix consistency, by the mixed material being stirred is fitted into the bricks die of concrete road surface vibration hot-press solidifying at Type demoulds after 15-20 hours, obtains concrete road pavement brick green body, vibration frequency is 4000-4500 times/min, time of vibration is 60-90s, briquetting pressure 30-40kN;
S2, concrete road pavement brick green body after molding carry out steam curing, and temperature is 45-60 DEG C when steam constant temperature conserves, Steam curing condition are as follows: heating 2 hours, then thermostatic curing 5 hours, finally cooling maintenance 2 hours;
Natural curing is carried out after S3, steam curing are complete, user's work or mechanical spray pattern are during natural curing with daily 2-3 frequency is sprayed water, and obtains concrete road pavement brick after natural curing 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, glue Solidifying 11 parts of agent, 0.8 part of high efficiency water reducing agent, 0.8 part of reinforcing agent, 0.2 part of dispersing agent, 0.1-1 parts of retarder;Preparation method and implementation Example 1 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, glue Solidifying 12 parts of agent, 1.5 parts of high efficiency water reducing agent, 1.5 parts of reinforcing agent, 0.3 part of dispersing agent, 0.1-1 parts of retarder;Preparation method and implementation Example 1 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, glue Solidifying 14 parts of agent, 1.8 parts of high efficiency water reducing agent, 1.8 parts of reinforcing agent, 0.4 part of dispersing agent, 0.1-1 parts of retarder;Preparation method and implementation Example 1 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, glue Solidifying 15 parts of agent, 2 parts of high efficiency water reducing agent, 2 parts of reinforcing agent, 0.5 part of dispersing agent, 1 part of retarder;Preparation method and 1 phase of embodiment Together.
The key technical indexes (according to GB28635-2012) of the embodiment of the present invention:
Illustrate that the performance technologies such as compression strength, flexural strength, skid resistance, the water absorption rate of concrete road pavement brick of the invention refer to Mark meets national standard and professional standard.

Claims (4)

1. a kind of method for preparing concrete road pavement brick using construction refuse regenerated aggregate, which is characterized in that the concrete road Face includes the raw material of following parts by weight: 60-80 parts of construction refuse regenerated aggregate, 25-35 parts of ultra-fine 52.5 portland cement, glue Coagulate agent 10-15 parts, 0.5-2 parts of high efficiency water reducing agent, 0.5-2 parts of reinforcing agent, 0.1-0.5 parts of dispersing agent, 0.1-1 parts of retarder;
The preparation method of concrete road pavement brick includes 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 added first Enter to stir in blender 3-5 minutes, reinforcing agent, dispersing agent and retarder is then added and continues stirring 5-10 minutes, use is suitable Water adjusts mix consistency, and the mixed material being stirred is fitted into the bricks die of concrete road surface and vibrates hot-press solidifying molding, 15- Demoulded after 20 hours, obtain concrete road pavement brick green body, vibration frequency is 4000-4500 times/min, time of vibration 60-90s, Briquetting pressure is 30-40kN;
S2, concrete road pavement brick green body after molding carry out steam curing, and temperature is 45-60 DEG C when steam constant temperature conserves, steam Curing condition are as follows: heating 2 hours, then thermostatic curing 5 hours, finally cooling maintenance 2 hours;
Natural curing is carried out after S3, steam curing are complete, user's work or mechanical spray pattern are during natural curing with 2-3 times daily Frequency spray water, obtain concrete road pavement brick after natural curing 14-28 days;
The construction refuse regenerated aggregate includes coarse aggregate and fine aggregate, and the coarse aggregate size is 4-8mm, and fine aggregate partial size is The weight ratio of 2.5-4mm, coarse aggregate and fine aggregate is 2-3:1-2;
52.5 portland cements are carried out the secondary specific surface area that is ground to and are greater than by the ultra-fine 52.5 portland cement position 10000cm2/g;
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;
The water-reducing agent includes the raw material of following parts by weight: 30-40 parts of acrylic acid, 10-15 parts of ammonium persulfate, organic silicon emulsion 5- 10 parts, 2-6 parts of triethanolamine, 1-4 parts of molasses, 0.5-2 parts of dodecyl sodium sulfate.
2. the method according to claim 1 for preparing concrete road pavement brick using construction refuse regenerated aggregate, feature exist Include wollastonite powder and redispersable latex powder in: the reinforcing agent, the mass ratio of wollastonite powder and redispersable latex powder is 1: 1-2。
3. the method according to claim 1 for preparing concrete road pavement brick using construction refuse regenerated aggregate, feature exist In: the dispersing agent includes following raw material: ethylene oxide, calcium lignosulfonate, sodium sulphate, sodium hydroxide and silicone;Epoxy Ethane, calcium lignosulfonate, sodium sulphate, sodium hydroxide and silicone mass ratio be 3-4:1-2:1:0.5:0.5.
4. the method according to claim 1 for preparing concrete road pavement brick using construction refuse regenerated aggregate, feature exist In: the retarder is boric acid or citric acid.
CN201710014258.0A 2017-01-10 2017-01-10 The method for preparing concrete road pavement brick using construction refuse regenerated aggregate Active CN106673592B (en)

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