CN109608152A - A kind of green strong concrete and its preparation process - Google Patents
A kind of green strong concrete and its preparation process Download PDFInfo
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- CN109608152A CN109608152A CN201910087985.9A CN201910087985A CN109608152A CN 109608152 A CN109608152 A CN 109608152A CN 201910087985 A CN201910087985 A CN 201910087985A CN 109608152 A CN109608152 A CN 109608152A
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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
- C04B28/24—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 alkyl, ammonium or metal silicates; containing silica sols
- C04B28/26—Silicates of the alkali metals
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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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
- C04B20/026—Comminuting, e.g. by grinding or breaking; Defibrillating fibres other than asbestos
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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
- C04B2201/52—High compression strength concretes, i.e. with a compression strength higher than about 55 N/mm2, e.g. reactive powder concrete [RPC]
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- 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
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- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a kind of green strong concrete and its preparation processes, are related to technical field of concrete production, solve because the stability of Aggregate of recycled concrete in concrete is poor, cause concrete integral structure intensity uneven, and the problem that stability is poor.A kind of green strong concrete, the component including following parts by weight: 180~220 parts of water；450~550 parts of stone；751~800 parts of middle sand；250~260 parts of portland cement；40~70 parts of flyash；90~100 parts of miberal powder；120~160 parts of Aggregate of recycled concrete；Discarded 61~80 parts of steel slag；20~35 parts of waterglass；8~10 parts of sodium thiosulfate；16~20 parts of material is strengthened in filling；3~5 parts of water-reducing agent.Green strong concrete in above-mentioned patent is with good stability and structural strength, and overall structural strength is uniform, and production process Green environmental protection has good application.
Description
Technical field
The present invention relates to technical field of concrete production, more specifically, it relates to a kind of green strong concrete and
Its preparation process.
Background technique
Concrete, which refers to, makees cementitious material with cement, and sand, masonry aggregate are matched by a certain percentage with water, additive, admixture
Close, it is agitated obtained by cement concrete, also referred to as normal concrete, it is widely used in civil engineering.
A kind of preparation of discarded concrete aggregate is disclosed in the Chinese invention patent of Publication No. CN103771782A
Celluar concrete and its method, a kind of component and quality proportioning of the celluar concrete of discarded concrete aggregate preparation are as follows: poly- third
1~4 part of alkene fiber, 250~300 parts of cement, 1200~1500 parts of recycled aggregate, 130-160 parts of sand, 90~110 parts of water and
3~6 parts of additive, the additive by 20~25 parts of polycarboxylate water-reducer, 10~15 parts of ferric sulfate, limestone powder 10~
15 parts, 50~60 parts of active silica solid particle compositions.
In above-mentioned patent, it is used as recycled aggregate after discarded concrete is handled, solves the recycling of discarded concrete
, and polypropylene fibre and additive is added, so that the celluar concrete of preparation has good structural strength and plant in hole
Environment needed for gap growth inside, but recycled aggregate is after prolonged corrode, inside can become soft porous, only according to
It can not make obtained concrete that there is uniform and stable structural strength, and stability in use by polypropylene fibre
It is poor, it is, therefore, desirable to provide a kind of new scheme solves the above problems.
Summary of the invention
For because the stability of Aggregate of recycled concrete in concrete is poor, leading to concrete integral structure in the prior art
Intensity is uneven, and the problem that stability is poor, and the purpose of the present invention one is to provide a kind of green strong concrete, passes through
Improve Aggregate of recycled concrete compactness and structural strength, to solve the above technical problems, it is with good stability and
Structural strength, and overall structural strength is uniform.
To achieve the above object one, the present invention provides the following technical scheme that
A kind of green strong concrete, the component including following parts by weight:
180~220 parts of water；
450~550 parts of stone；
751~800 parts of middle sand；
250~260 parts of portland cement；
40~70 parts of flyash；
90~100 parts of miberal powder；
120~160 parts of Aggregate of recycled concrete；
Discarded 61~80 parts of steel slag；
20~35 parts of waterglass；
8~10 parts of sodium thiosulfate；
16~20 parts of material is strengthened in filling；
3~5 parts of water-reducing agent.
By using above-mentioned technical proposal, flyash is a kind of artificial pozzolana mixed material, and itself slightly has or do not have
There is hydraulic gelling property, chemically reacted with calcium hydroxide or other alkaline earth metal hydroxides, generating has hydraulic gelling
The compound of performance becomes a kind of material for increasing intensity and durability.Miberal powder can effectively improve green strong concrete
Compression strength reduces the cost of green strong concrete, while to alkali-aggregate reaction is inhibited, reducing the heat of hydration, reducing green
Strong concrete structure early stage thermal cracking improves green strong concrete compactness, and is improving impervious and anti-erosion
There is positive effect in ability.
Water-reducing agent is a kind of under conditions of maintaining the retarded concrete slump to be basically unchanged, and can be reduced mixing water amount
Concrete admixture.Discarded steel slag can be used for the preparation of concrete, because in steel slag containing with hydraulic gelling tricalcium silicate,
Dicalcium silicate and ferrous aluminate isoreactivity mineral make green strong concrete have wear-resisting, High anti bending strength, corrosion-resistant, anti-
The good characteristics such as jelly, and be conducive to save natural resources, rationally utilize resource.Material is strengthened in filling not only has good structure strong
Degree, and there is good dispersibility in green strong concrete, and there is good compatibility with each component raw material, in turn
Greatly improve the overall performance of green strong concrete.
Sodium thiosulfate can make water have good acidity, can with the calcium hydroxide reaction in Aggregate of recycled concrete,
And then improve the surface of Aggregate of recycled concrete, so as to improve the performance of Aggregate of recycled concrete.Waterglass is added, when
Meeting precipitated silicic acid gel when waterglass hardens, and waterglass can also generate water with the calcium hydroxide reaction in Aggregate of recycled concrete
Rigid siliceous colloid makes the inside of Aggregate of recycled concrete become more closely knit, and is partially filled with reinforcing and expects also to be capable of fixing to fill out
It fills in the inside of Aggregate of recycled concrete, improve its intensity can also greatly.Meanwhile sodium thiosulfate, waterglass and discarded
Steel slag can play the role of compound synergic when being used in mixed way, and keep the structural strength of green strong concrete entirety more equal
It is even, and stability is more preferable, additionally it is possible to resource is rationally utilized, there is good application.
Further preferably, the enhancing that parts by weight are 6~8 is additionally added in the component of the green strong concrete
Fiber, and reinforcing fiber is selected in lignin fibre, basalt fibre, polyester fiber, sepiolite fibre and brucite fiber
It is one or more.
By using above-mentioned technical proposal, lignin fibre, basalt fibre, polyester fiber, sepiolite fibre and water magnesium
Mineral wool all has excellent toughness, intensity and adsorptivity, and has good dispersibility in each component raw material, can make green
The overall structural strength of strong concrete greatly improves.Meanwhile reinforced partly fiber can be filled in discarded steel slag and regeneration
In the internal void of aggregate, and is reacted on portland cement and waterglass and Aggregate of recycled concrete and generate the hydraulicity
Siliceous colloid fixed column forms stable reticular structure in the inside of green strong concrete, and then makes green concrete
Overall quality greatly improves.
Further preferably, the fines and partial size that the Aggregate of recycled concrete is mainly 1~8mm by partial size be 8~
The coarse fodder of 16mm forms, and the weight fraction ratio of fines and coarse fodder is 1:(1.2~1.5).
By using above-mentioned technical proposal, Aggregate of recycled concrete has voidage big and water suction compared with natural aggregate
The strong feature of property is mainly 1~8mm by partial size, the old asphalt concrete of 8~15mm be by ratio of weight and the number of copies (0.6~
0.8): 1 composition can have a good associativity between each component raw material, and Aggregate of recycled concrete be conducive to improve it is green
Ability of anti-deformation, anti-fatigue ability and the mobile performance of color strong concrete, and then it is good to have green strong concrete
Good quality.
Further preferably, material selection silicon powder, glass microballoon, perlite powder, carbon black and aluminium nitride are strengthened in filling
One of or it is a variety of.
By using above-mentioned technical proposal, silicon powder, glass microballoon, perlite powder, carbon black and aluminium nitride are good
Material is strengthened in good filling, has good dispersibility in green strong concrete, and have between each component raw material
Good associativity can not only improve the structural strength of green strong concrete, and green strong concrete can be made to exist
Good stability is kept in use process, and there is good high temperature resistant, wear-resistant and resistance to chemical corrosion.
Further preferably, the water-reducing agent is one of sodium lignin sulfonate, sodium sulfite, tannin and sugar calcium or more
Kind.
By using above-mentioned technical proposal, sodium lignin sulfonate, sodium sulfite, tannin and sugar calcium are good diminishing
Agent, and there is good peptizaiton to each component raw material of green strong concrete, it can be reduced unit consumption of water, and improve
The mobility of green strong concrete improves the compactness of green strong concrete.Meanwhile a variety of water-reducing agents are used in mixed way
When, it can reduce the bleeding rate of green strong concrete, it is with good stability, and keep well stable impervious energy
Power.
The purpose of the present invention two is to provide a kind of preparation process of green strong concrete, using technique preparation
Green strong concrete is with good stability and structural strength, and overall structural strength is uniform.
To achieve the above object two, the present invention provides following technical solutions, comprising the following steps:
The stone of corresponding parts by weight, middle sand, flyash, portland cement, miberal powder are being stirred mixing by step 1, and
It is dried, obtains mixture；
Step 2, the filling that corresponding parts by weight are added in mixture strengthen material and discarded steel slag, are stirred drying, obtain
Base-material；
The water of corresponding parts by weight, waterglass, sodium thiosulfate and water-reducing agent are put into a mixing bowl and are stirred by step 3,
Obtain mixed liquor；
Aggregate of recycled concrete is immersed in mixed liquor by step 4, and after placing a period of time, base-material is poured into several times, and
It is constantly stirred, green strong concrete can be obtained.
By using above-mentioned technical proposal, drying stirring is carried out to stone, middle sand, flyash, portland cement and miberal powder,
Be conducive to be uniformly mixed it, prevent it from causing the quality of green strong concrete to substantially reduce together because of part adhesive.
Aggregate of recycled concrete is impregnated into one end time in mixed liquor, is conducive to improve the surface of regeneration concrete, and make
Waterglass is filled in the internal void of Aggregate of recycled concrete so as to green strong concrete integrally have
Even structural strength.Meanwhile the technological operation of the preparation green strong concrete is relatively simple, and can quickly make each component
Between be quickly uniformly mixed, make green strong concrete production efficiency with higher, overall quality can also be guaranteed.
Further preferably, the step 4 is specifically configured to, after Aggregate of recycled concrete quartz sand blasting treatment,
The dopant being made of Aggregate of recycled concrete, dust material and quartz sand is obtained, then dopant is immersed in mixed liquor, is put
After setting a period of time, base-material is poured into, and be constantly stirred several times, green strong concrete can be obtained.
Regeneration concrete bone is made to Aggregate of recycled concrete quartz sand blasting treatment by using above-mentioned technical proposal
The soft material on material surface is removed, and Aggregate of recycled concrete is not only made to have well stable intensity, moreover it is possible to regeneration coagulation
The surface of native aggregate is improved.Meanwhile the dopant being made of Aggregate of recycled concrete, dust material and quartz sand use will be obtained
It in the preparation of green strong concrete, can both economize on resources, and be advantageously implemented environmentally protective production, moreover it is possible to which having makes green height
Associativity between the compactness and each component of strength concrete greatly improves, and then has green strong concrete integrally
Good quality.
Further preferably, the step 4 is specifically configured to, and broken glass is added in Aggregate of recycled concrete
Nomex after mixing, then with quartz sand blasting treatment, obtains being made of Aggregate of recycled concrete, dust material and quartz sand
Then dopant is immersed in mixed liquor by dopant, after placing a period of time, base-material is poured into several times, and is constantly carried out
Stirring, can be obtained green strong concrete.
By using above-mentioned technical proposal, Aggregate of recycled concrete can generate a large amount of during being polished by quartz sand
Dust, and glass Nomex have good pick-up performance, can be avoided in process of production and the phenomenon that dust from flying occur,
Advantageously ensure that the feature of environmental protection in production process, and glass Nomex not only has good structural strength, also has good
Sound-absorbing, damping, corrosion-resistant, insulation, high temperature resistant, flame retardant property, are entrained in green strong concrete, are conducive to make green height
The overall quality of strength concrete is greatly enhanced.
Further preferably, the broken size of glass Nomex is 2mm × 2mm × 0.5mm.
By using above-mentioned technical proposal, when glass Nomex is broken for 2mm × 2mm × 0.5mm size, can guarantee
Under the premise of quartz sand plays good sandblasting effect to Aggregate of recycled concrete, it is not easy to generate biggish dust in process of production
It flies upward, and it can also be evenly distributed between each component raw material, and there is good combination between each component raw material
Performance, it is best to the promotion effect of green strong concrete.
In conclusion compared with prior art, the invention has the following advantages:
(1) sodium thiosulfate can be such that the surface of Aggregate of recycled concrete is improved, and waterglass makes Aggregate of recycled concrete
Inside becomes more closely knit, and the intensity of aggregate can also be improved greatly.Meanwhile sodium thiosulfate, waterglass and useless
Steel slag is abandoned when being used in mixed way, compound synergic can be played the role of, make the structural strength of green strong concrete entirety more
Uniformly, and stability is more preferable, additionally it is possible to rationally utilize resource, have good application；
(2) reinforcing fiber can be improved the uniformity and stability of green strong concrete overall structural strength, and part increases
Strong fiber can be filled in discarded steel slag and the internal void of Aggregate of recycled concrete, and by portland cement and waterglass with
Reaction generates hydraulicity siliceous colloid fixed column in Aggregate of recycled concrete, forms stabilization in the inside of green strong concrete
Reticular structure, and then greatly improve the overall quality of green concrete；
(3) blasting treatment is carried out to Aggregate of recycled concrete, and before blasting treatment, is added in Aggregate of recycled concrete broken
Glass Nomex afterwards not only contributes to guarantee the feature of environmental protection in production process, moreover it is possible to make the entirety of green strong concrete
Quality is greatly enhanced.
Detailed description of the invention
Fig. 1 is the preparation technology flow chart of Green strong concrete of the present invention.
Specific embodiment
With reference to the accompanying drawings and examples, the present invention will be described in detail.
Embodiment 1: a kind of green strong concrete, each component and its corresponding parts by weight are as shown in table 1, and pass through
Following steps prepare:
The stone of corresponding parts by weight, middle sand, flyash, portland cement, miberal powder are stirred by step 1 in drying bucket
Mixing, revolving speed 700rpm, time 30min, temperature are controlled at 90 DEG C, obtain mixture；
The silicon powder and discarded steel slag of corresponding parts by weight is added in step 2 in mixture, is stirred drying, and temperature control exists
80 DEG C, time 20min, mixing speed 600rpm obtain base-material；
The water of corresponding parts by weight, waterglass, sodium thiosulfate and sodium lignin sulfonate are put into a mixing bowl and carry out by step 3
Stirring, time 10min, mixing speed 400rpm obtain mixed liquor；
Aggregate of recycled concrete is immersed in mixed liquor by step 4, and after placing 10min, the quality such as base-material are poured into three times,
And it is constantly stirred, mixing speed 600rpm, and the mixing time to feed every time is 10min, and it is high-strength that green can be obtained
Spend concrete.
Note: the coarse fodder that the fines and partial size that the Aggregate of recycled concrete in step 4 is mainly 4.5mm by partial size are 12mm
Composition, and the weight fraction ratio of fines and coarse fodder is 1:1.35.
Embodiment 2-8: a kind of green strong concrete, difference from example 1 is that, each component and its corresponding
Parts by weight it is as shown in table 1.
Each component and its parts by weight in 1 embodiment 1-8 of table
Embodiment 9: a kind of green strong concrete, difference from example 1 is that, the regeneration concrete in step 4
The coarse fodder that the fines and partial size that aggregate is mainly 1mm by partial size are 8mm forms, and the weight fraction ratio of fines and coarse fodder is 1:
1.5。
Embodiment 10: a kind of green strong concrete, difference from example 1 is that, the regeneration concrete
The coarse fodder that the fines and partial size that aggregate is mainly 8mm by partial size are 16mm forms, and the weight fraction ratio of fines and coarse fodder is 1:
1.2。
Embodiment 11: a kind of green strong concrete, difference from example 1 is that, step 1 specifically includes
Following steps, stone, 750 parts of middle sand, 9 parts of flyash, 260 parts of silicate cement by corresponding parts by weight for 550 parts
Mud, 40 parts of miberal powder and 90 parts of reinforcing fiber are stirred mixing in drying bucket, and reinforcing fiber selects lignin fibre, turn
Speed be 700rpm, time 30min, temperature control at 90 DEG C, obtain mixture.
Embodiment 12: a kind of green strong concrete, difference from example 1 is that, step 1 specifically includes
Following steps, stone, 750 parts of middle sand, 9 parts of flyash, 260 parts of silicate cement by corresponding parts by weight for 550 parts
Mud, 40 parts of miberal powder and 90 parts of reinforcing fiber are stirred mixing in drying bucket, and reinforcing fiber selects basalt fibre, turn
Speed be 700rpm, time 30min, temperature control at 90 DEG C, obtain mixture.
Embodiment 13: a kind of green strong concrete, difference from example 1 is that, step 1 specifically includes
Following steps, stone, 750 parts of middle sand, 9 parts of flyash, 260 parts of silicate cement by corresponding parts by weight for 550 parts
Mud, 40 parts of miberal powder and 90 parts of reinforcing fiber are stirred mixing in drying bucket, and reinforcing fiber selection weight fraction ratio is
The sepiolite fibre and brucite fiber of 1:1, revolving speed 700rpm, time 30min, temperature are controlled at 90 DEG C, are mixed
Material.
Embodiment 14: a kind of green strong concrete, difference from example 1 is that, step 1 specifically includes
Following steps, stone, 750 parts of middle sand, 9 parts of flyash, 260 parts of silicate cement by corresponding parts by weight for 550 parts
Mud, 40 parts of miberal powder and 90 parts of reinforcing fiber are stirred mixing in drying bucket, and reinforcing fiber selection weight fraction ratio is
The polyester fiber and brucite fiber of 2:1, revolving speed 700rpm, time 30min, temperature are controlled at 90 DEG C, obtain mixture.
Embodiment 15: a kind of green strong concrete, difference from example 1 is that, step 2 specifically includes
Following steps, it is 16 parts of glass microballoon and 80 parts of discarded steel slag that corresponding parts by weight are added in mixture, is stirred
Drying, temperature control obtain base-material at 80 DEG C, time 20min, mixing speed 600rpm.
Embodiment 16: a kind of green strong concrete, difference from example 1 is that, step 2 specifically includes
Following steps, it is 8 parts of perlite powder, 4 parts of carbon black, 4 parts of nitridation that corresponding parts by weight are added in mixture
Aluminium and 80 parts of discarded steel slag are stirred drying, and temperature is controlled at 80 DEG C, time 20min, mixing speed 600rpm,
Obtain base-material.
Embodiment 17: a kind of green strong concrete, difference from example 1 is that, step 3 specifically includes
Following steps, water, 20 parts of waterglass, 10 parts of sodium thiosulfate and 5 parts of the sulfurous for being 180 parts by corresponding parts by weight
Sour sodium, which is put into a mixing bowl, to be stirred, time 10min, and mixing speed 400rpm obtains mixed liquor.
Embodiment 18: a kind of green strong concrete, difference from example 1 is that, step 3 specifically includes
Following steps, by corresponding parts by weight be 180 parts water, 20 parts of waterglass, 10 parts of sodium thiosulfate, 2 parts of tannin
It is put into a mixing bowl and is stirred with 3 parts of sugar calcium, time 10min, mixing speed 400rpm obtain mixed liquor.
Embodiment 19: a kind of green strong concrete, the difference is that, the step 4 is specific with embodiment 14
It is set as, after Aggregate of recycled concrete quartz sand blasting treatment, obtains by Aggregate of recycled concrete, dust material and quartz sand
Dopant, is then immersed in mixed liquor by the dopant of composition, and after placing 10min, the quality such as base-material are poured into three times, and
It is constantly stirred, mixing speed 600rpm, and the mixing time to feed every time is 10min, green high intensity can be obtained
Concrete.
Embodiment 20: a kind of green strong concrete, the difference is that, the step 4 is specific with embodiment 19
It is set as, it is that 5 parts of broken glass Nomexs are uniformly mixed that parts by weight are added in Aggregate of recycled concrete, glass needle thorn
The size of felt is 2mm × 2mm × 0.5mm, then with quartz sand blasting treatment, is obtained by Aggregate of recycled concrete, dust material and stone
Dopant, is then immersed in mixed liquor by the dopant of sand composition, and after placing 10min, the quality such as base-material are fallen in three times
Enter, and is constantly stirred, mixing speed 600rpm, and the mixing time to feed every time is 10min, and green height can be obtained
Strength concrete.
Comparative example 1: it is a kind of green strong concrete, difference from example 1 is that, step 3 specifically include as
Lower step, by corresponding parts by weight be 180 parts water, 10 parts of sodium thiosulfate, 5 parts of sodium lignin sulfonate be put into stirring
It is stirred in cylinder, time 10min, mixing speed 400rpm obtains mixed liquor.
Comparative example 2: it is a kind of green strong concrete, difference from example 1 is that, step 3 specifically include as
Lower step, by corresponding parts by weight be 180 parts water, 20 parts of waterglass, 5 parts of sodium lignin sulfonate be put into a mixing bowl
It is stirred, time 10min, mixing speed 400rpm obtains mixed liquor.
Comparative example 3: it is a kind of green strong concrete, difference from example 1 is that, step 3 specifically include as
Lower step, by corresponding parts by weight be 180 parts water and 5 parts of sodium lignin sulfonate be put into a mixing bowl and be stirred, when
Between be 10min, mixing speed 400rpm obtains mixed liquor.
Comparative example 4: it is a kind of green strong concrete, with comparative example 1 the difference is that, step 2 specifically include as
The silicon powder that corresponding parts by weight are 16 parts is added in lower step in mixture, is stirred drying, and temperature is controlled at 80 DEG C, when
Between be 20min, mixing speed 600rpm obtains base-material.
Intensity test test specimen: using the green strong concrete obtained in embodiment 1-20 as test sample
Product 1-20, using the green strong concrete obtained in comparative example 1-4 as control sample 1-4.
Test method: by test specimen 1-20 and control sample 1-4, according to GB/T50080-2002, " normal concrete is mixed and stirred
Physical performance test method " reference block is made, using TYE-3000 computer full-automatic concrete pressure machine, take adding for 0.5MPa/s
Carry speed, the compression strength of measurement standard test block maintenance 7d, 14d and 28d.
Test result: as shown in table 2 to the test result of test specimen 1-20 and control sample 1-4.As shown in Table 2, by
The control of the test result of test specimen 1-8 and control sample 1-4 can obtain, and sodium thiosulfate, waterglass and discarded steel slag can mention
The overall structural strength of high green strong concrete, and it can play the role of compound synergic, make green when being used in mixed way
The structural strength of strong concrete entirety further increases.By the test result pair of test specimen 1-8 and test specimen 11-14
According to that can obtain, one of lignin fibre, basalt fibre, polyester fiber, sepiolite fibre and brucite fiber or more are selected
Kind it is used as reinforcing fiber, the compression strength of green strong concrete can be made to improve, and when it is used in mixed way, it also can be further
Improve compression strength.It can be obtained by the control of the test result of test specimen 14 and test specimen 19, to Aggregate of recycled concrete stone
Sand blasting treatment, and will obtain being used for by the dopant that Aggregate of recycled concrete, dust material and quartz sand form green high-strength
The preparation of concrete is spent, and then greatly improves the compression strength of green strong concrete entirety.By test specimen 14 and examination
The test result control for testing sample 20 can obtain, and broken glass Nomex is added in Aggregate of recycled concrete before being polished,
It can be improved the compression strength of green strong concrete entirety.
The test result of table 2 test specimen 1-20 and control sample 1-4
The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-described embodiment,
All technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
For those of ordinary skill, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (9)
1. a kind of green strong concrete, which is characterized in that the component including following parts by weight:
180~220 parts of water；
450~550 parts of stone；
751~800 parts of middle sand；
250~260 parts of portland cement；
40~70 parts of flyash；
90~100 parts of miberal powder；
120~160 parts of Aggregate of recycled concrete；
Discarded 61~80 parts of steel slag；
20~35 parts of waterglass；
8~10 parts of sodium thiosulfate；
16~20 parts of material is strengthened in filling；
3~5 parts of water-reducing agent.
2. green strong concrete according to claim 1, which is characterized in that the group of the green strong concrete
The reinforcing fiber that parts by weight are 6~8 is additionally added in point, and reinforcing fiber selects lignin fibre, basalt fibre, polyester
One of fiber, sepiolite fibre and brucite fiber are a variety of.
3. it is according to claim 1 green strong concrete, which is characterized in that the Aggregate of recycled concrete mainly by
The coarse fodder composition that the fines and partial size that partial size is 1~8mm are 8~16mm, and the weight fraction ratio of fines and coarse fodder is 1:(1.2
~1.5).
4. green strong concrete according to claim 1, which is characterized in that the filling reinforcing material selection silicon powder,
One of glass microballoon, perlite powder, carbon black and aluminium nitride are a variety of.
5. green strong concrete according to claim 1, which is characterized in that the water-reducing agent is lignin sulfonic acid
One of sodium, sodium sulfite, tannin and sugar calcium are a variety of.
6. a kind of preparation process of green strong concrete as described in claim 1, which is characterized in that including following step
It is rapid:
The stone of corresponding parts by weight, middle sand, flyash, portland cement, miberal powder are being stirred mixing by step 1, and
It is dried, obtains mixture；
Step 2, the filling that corresponding parts by weight are added in mixture strengthen material and discarded steel slag, are stirred drying, obtain
Base-material；
The water of corresponding parts by weight, waterglass, sodium thiosulfate and water-reducing agent are put into a mixing bowl and are stirred by step 3,
Obtain mixed liquor；
Aggregate of recycled concrete is immersed in mixed liquor by step 4, and after placing a period of time, base-material is poured into several times, and
It is constantly stirred, green strong concrete can be obtained.
7. the preparation process of green strong concrete according to claim 6, which is characterized in that the step 4 is specific
It is set as, after Aggregate of recycled concrete quartz sand blasting treatment, obtains by Aggregate of recycled concrete, dust material and quartz sand
Dopant, is then immersed in mixed liquor by the dopant of composition, after placing a period of time, base-material is poured into several times, and not
It is disconnected to be stirred, green strong concrete can be obtained.
8. the preparation process of green strong concrete according to claim 7, which is characterized in that the step 4 is specific
It is set as, broken glass Nomex is added in Aggregate of recycled concrete after mixing, then with quartz sand blasting treatment,
The dopant being made of Aggregate of recycled concrete, dust material and quartz sand is obtained, then dopant is immersed in mixed liquor, is put
After setting a period of time, base-material is poured into, and be constantly stirred several times, green strong concrete can be obtained.
9. the preparation process of green strong concrete according to claim 8, which is characterized in that the glass Nomex
Broken size is 2mm × 2mm × 0.5mm.
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| CN114276081A (en) * | 2021-12-23 | 2022-04-05 | 福建省深宝建材有限公司 | Steel slag-containing concrete and preparation method thereof |
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