CN110092613A - A kind of environmental type concrete and its production technology - Google Patents
A kind of environmental type concrete and its production technology Download PDFInfo
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- CN110092613A CN110092613A CN201910272544.6A CN201910272544A CN110092613A CN 110092613 A CN110092613 A CN 110092613A CN 201910272544 A CN201910272544 A CN 201910272544A CN 110092613 A CN110092613 A CN 110092613A
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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
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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
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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Abstract
The invention discloses a kind of environmental type concrete and its production technologies, include following components: reinforcement recycled aggregate, regenerative micro powder, fine sand, haydite, cement, fine coal ash, miberal powder, waterproofing agent, water-reducing agent, air entraining agent, water, reinforcement recycled aggregate are made of mass ratio for the reinforcement regenerated coarse aggregate and reinforcement recycled fine aggregate of 3.5:(1-2)；Preparation method are as follows: S1, weigh respective component cement, fine sand, haydite investment blender stirring 30-40s；The blender that S2, the regenerative micro powder for weighing respective component, flyash, miberal powder are added in S1 step continues to be stirred 20-30s, and the water for adding one third proportion component continues stirring 20-30s and is mixed into the uniform mortar of color；S3, water, reinforcement recycled aggregate, air entraining agent, water-reducing agent, the waterproofing agent that remaining proportion component is added into S2 step continue to stir 50-80s to being uniformly mixed.Environmentally protective concrete of the invention has the advantages that compression strength is high, durability is good.
Description
Technical field
The present invention relates to technical field of concrete production, in particular to a kind of environmental type concrete and its production work
Skill.
Background technique
Concrete has many advantages, such as the modern architecture work that durability is good, bearing capacity is strong, abundant raw material is widely used because of it
Cheng Zhong, modern architecture can use the concrete of different formulations according to different construction requirements in the process, concrete recycled to pour
Building element of the varying strength with shape is made in the technology of building.
In the development process of building industry, while generation with a large amount of concrete construction bodies, also accordingly produce big
The building castoff of batch, these discarded concrete structures throw aside overstock soil and ecological environment are caused it is huge
Pressure.On the other hand, large quantities of newly-built, reconstructions and extension project are badly in need of the resources such as a large amount of sandstone, soil again, have so fallen into evil
Property circulation, also seriously constrain environment and economic sustainable development.Therefore, it studies and utilizes new technology by building castoff
It recycles, to mitigate environmental pressure, reduces the consumption to resource, the economic significance with long-range development meaning and reality.
It is mostly used in industry at present and is prepared into recycled aggregate after building castoff is broken, screening, intensive treatment and is recycled.
Notification number be CN106007563B Chinese patent disclose it is a kind of utilize discarded concrete preparation the ecotype thoroughly
Water coagulation soil, raw material composition are as follows: recycled aggregate composition 65.5-79.5%, regeneration concrete micro mist 1.2-2.4%, cement
14-19.5%, granulation ferrochrome ground-slag 2.4-4.8%, polycarboxylate water-reducer 0.1-0.3%, modifying agent 0.1-0.3%, welan gum
0.1-0.2%, surplus are water, and wherein modifying agent is ethylene diamine tetra methylene phosphonic acid sodium and polyisobutylene succinamide according to 1:
The weight ratio of 0.8-1.6 is mixed；Recycled aggregate is by discarded concrete through jaw crushing crusher machine, and artificial screening removal is big
Particle and gravel impurity, then the impurity such as clay, the dust for removing aggregate surface are rinsed with water, it finally dries and is made；This green
Environment protection type water permeable concrete stirs the preparation method comprises the following steps: recycled aggregate composition and 1/5th water of formulation dosage are added
Machine stir 30s, then by regeneration concrete micro mist, cement, granulation ferrochrome ground-slag, water-reducing agent, modifying agent, welan gum and surplus water
It adds to wherein, continues to stir 150s, pour, is smooth, maintenance.
Although compounding using ethylene diamine tetra methylene phosphonic acid sodium and polyisobutylene succinamide in prior art
It cooperates with to improve Aggregate of recycled concrete, regeneration concrete micro mist and the reactivity for being granulated ferrochrome ground-slag, to improve permeable
Concrete spreads out and puts on performance, but the more, rough surface through the broken recycled aggregate grain corner formed of discarded concrete, adds
Concrete block in shattering process because of damage accumulation caused by inside a large amount of micro-cracks, lead to the porosity of recycled aggregate itself
Greatly, water absorption rate is big, accumulation it is close it is small, crush index is high, to will affect the intensity after concrete hardening and endurance quality.Therefore,
It needs to carry out further intensive treatment to recycled aggregate, improves the comprehensive performance of regeneration concrete.
Summary of the invention
The purpose of the present invention is to provide a kind of environmental type concrete and its production technologies processed, utilize discarded concrete
Recycled aggregate is prepared, improves resource utilization, and strengthen to recycled aggregate, obtained regeneration concrete has pressure resistance
The advantage that degree is high, durability is good.
To achieve the above object, the present invention provides the following technical scheme that a kind of environment-friendly type concrete, includes following weight
The component of part: 520-650 parts of reinforcement recycled aggregate, 15-25 parts of regenerative micro powder, 100-140 parts of fine sand, 60-80 parts of haydite, cement
110-160 parts, 60-150 parts of flyash, 60-120 parts of miberal powder, 5-10 parts of waterproofing agent, 1.5-3 parts of water-reducing agent, 1-3 parts of air entraining agent,
100-150 parts of water；
The reinforcement recycled aggregate is the reinforcement regenerated coarse aggregate and reinforcement recycled fine aggregate group by mass ratio for 3.5:(1-2)
At.
By using above-mentioned technical proposal, when carrying out crushing to discarded mixed mud and preparing recycled aggregate, recycled aggregate
Grain rough surface, a large amount of micro-cracks can be generated in shattering process, lead to the porosity of recycled aggregate itself inside particles of aggregates
Greatly, water absorption rate is big, to will affect the intensity of recycled aggregate, reinforcement recycled aggregate is the surface and inside to recycled aggregate particle
Repair and reinforcement, the recycled aggregate after reinforcement can substitute natural aggregate and prepare concrete to blend, reaches to discarded mixed
The effect that solidifying soil recycles；Regenerative micro powder is the micro mist fine aggregate generated when crossing sieve classification to recycled aggregate, is contained in powder
There are a large amount of hydrolysis product of cement and unhydrated cement granules.On the one hand, regenerative micro powder is recycled, it can will be unhydrated
Complete cement granules " recovery " aquation, makes its stimulating activity and generates adhesion strength, another aspect, and cement-hydrate again can be
Play the role of " crystal seed " in the aquation and activity excitation of cementitious material, promote aquation, regenerative micro powder average grain diameter is smaller, mixed
Micro aggregate effect can also be played other than having gelatification in solidifying soil, and concrete can be made to form thin see and closely combine system, had
Conducive to interfacial transition zone is improved, concrete performance is improved.
Fine sand and haydite are fine aggregate, and wherein haydite has porous structure, and good water absorption, structural strength are high, with thick bone
Material mutually filling mixing, further improves the structural strength of concrete entirety；Cement, miberal powder, flyash and water are stirred
After form gel rubber material, it is cemented fixed that the aggregates such as reinforcement recycled aggregate, haydite are glued, and the basis for further increasing concrete is strong
Degree；The surface tension of water can be effectively reduced during being stirred together with concrete mix in air entraining agent, so that coagulation
Many uniform and stable minute bubbles are generated in native mix, are reduced the frictional force between aggregate, are improved concrete mixing
The mobility and mixing uniformity of material；Waterproofing agent can the surface to reinforcement recycled aggregate carry out bonding reparation, increase its waterproof
Performance improves corrosion-resistant and endurance quality；Water-reducing agent cooperates air entraining agent, further increases in concrete mix between particle
Dispersing uniformity increases the plasticizing effect of concrete so as to reduce the usage amount of water, so that the slump of concrete is damaged
It loses smaller.
Preferably, by experiment sieving, a kind of environment-friendly concrete is contained the following parts by weight: reinforcement recycled aggregate
550-620 parts, 18-22 parts of regenerative micro powder, 110-130 parts of fine sand, 65-75 parts of haydite, 120-150 parts of cement, flyash 70-
140 parts, 70-110 parts of miberal powder, 5-10 parts of waterproofing agent, 1.5-3 parts of water-reducing agent, 1-3 parts of air entraining agent, 110-140 parts of water.
Further, the reinforcement recycled aggregate preparation method the following steps are included:
S1, discarded concrete is put into jaw crushing crusher machine；
S2, broken concrete particle is sieved, scalping；
S3, the discarded concrete particles with water after screening is rinsed, is dried；
S4, will dry after concrete particle carry out regrading, forms granularity as the recycled fine aggregate and 5-8mm of 2-5mm
Regenerated coarse aggregate；
S5, reinforcement modifying agent, water are mixed according to the ratio that mass ratio is 2:3, forms reinforcement slurries, is according to solid-liquid mass ratio
Recycled aggregate is added in reinforcement slurries respectively for the ratio of 4:1, is stirred 10-15min, before slurries initial set, to regeneration
Aggregate is filtered, dries, so that reinforcement recycled aggregate be made.
By using above-mentioned technical proposal, the quick crashing to recycled concrete aggregate may be implemented by jaw crusher,
The regeneration concrete particle within the scope of specified particle diameter is formed by sieving, scalping again, is rinsed with water regeneration concrete particle
The dust of particle surface, impurity and original cement residue can be rinsed well, regrading is carried out after drying, form institute
The regenerated coarse aggregate and recycled fine aggregate of particle size range are needed, it is spare；Regenerated coarse aggregate and recycled fine aggregate are immersed in reinforcement slurry
Mixing is stirred in liquid, absorption is viscous to be sticked so that reinforcement modifying agent is carried out in recycled aggregate particle surface, is all regenerated to reach
The effect that particles of aggregates is strengthened.
Further, the reinforcement modifying agent in the step S5 contains the following parts by weight: 60-80 parts of ultra-fine mines
Powder, 10-15 parts of level-one flyash, 5-10 parts of PVA, 5-10 parts of sodium metasilicate.
By using above-mentioned technical proposal, the elements such as super finely ground slag calcium rich in, silicon, aluminium, in the concrete of alkalinity
It will form the reinforcement substance of mineral salts in mix, sodium metasilicate generates big OH after ionizing in water-, OH-Penetrate slag surface
And enter its inner cavity, the condensate depolymerization for forming slag oxygen-octahedron, and make free sulfate radical and calcium ion phase
Interaction forms a large amount of stable compounds, and flyash, which forms gel rubber system, makes the dispersions such as super finely ground slag bonding more evenly, PVA dissolution
Property is preferable, and adhesiveness is strong, and the cementation of reinforcement modifying agent can be improved.
Further, the reinforcement modifying agent preparation method the following steps are included:
S1, respective components are weighed according to the proportion, it is spare；
S2, the super finely ground slag that half component is added into blender, then successively by weighed level-one flyash, PVA, sodium metasilicate
Blender is added, finally remaining super finely ground slag is added again, adjusting blender revolving speed to 120-180rpm stirs 1-3min, quiet
5-10min is set, the premix of reinforcement modifying agent is released；
S3, ball mill is added in reinforcement modifying agent premix, grinds 30-60min, the dispersion of reinforcement modifying agent is made, it is spare.
By using above-mentioned technical proposal, the reference area of super finely ground slag is big, and adhesive force is strong, it is fed intake respectively and is being stirred
Machine lowest level and top layer, remaining component are successively delivered in centre, facilitate adequately and uniformly to mix each component in this way, quiet
Setting can be such that PVA adequately contacts with mixture, and infiltration, grinding can be further improved the uniformity of reinforcement modifying agent, increase
The scattered adsorption performance of modifying agent, improves its apparent activity.
Further, the waterproofing agent is water-based organic silicon waterproof agent.
By using above-mentioned technical proposal, water-based organic silicon waterproof agent good water solubility, can preferably dispersing and dissolving in mixed
In solidifying soil mix, the particles of aggregates surface for being forms membrane waterproofing, improves its anti-permeability performance.
Further, the water-reducing agent is lignosulfonates, and the lignosulfonates are sodium lignin sulfonate, wooden
One or more of plain sulfoacid calcium, magnesium lignosulfonate.
By using above-mentioned technical proposal, lignosulfonates have good diffusivity, soluble easily in water, are added in concrete
Stirring can improve the workability of concrete, reduce the dosage of the water as solvent, and can be improved the intensity of concrete with
Crack resistance.
Further, the air entraining agent is one or both of sodium abietate, triterpenoid saponin.
By using above-mentioned technical proposal, sodium abietate belongs to three benzene ring structure anionic surfactants, is dissolved in water
After can dissociate to form anionic group, with hydrophilic group and hydrophobic group amphiphilic structure, surface tension of liquid can be effectively reduced,
There are blistering, the foam performance of efficient stable；Triterpenoid saponin belongs to nonionic surfactant, molecular structure include monosaccharide groups,
Glucoside member base, wherein monosaccharide groups contain the polyhydroxy structure that hydrogen bond can be formed with hydrone, have very strong hydrophily, and glucoside member base
With stronger oleophyllie hydrophobic, therefore also contributes to reducing solution surface tension and generate bubble, while triterpenoid saponin molecule
Structure is larger, can form thicker molecular film, keeps the elasticity of bubble, size relatively stable, and it is fixed that the bubble of generation passes through
It is stable to adsorbed film, be uniformly adsorbed between the particles of aggregates of concrete, lubrication can be played and reduced and rubbed between particles of aggregates
The effect of resistance is wiped, to achieve the effect that the workability, the mobility that improve concrete mix, it helps improve concrete
Crack resistance and frost resistance.
Further, the miberal powder is S95 grades of miberal powders, specific surface area 400-450m2/ kg, moisture content 0.4%-
0.6%.
By using above-mentioned technical proposal, S95 grades of miberal powders have good dispersibility, surface-active, with second class powered coal ash
The workability and cohesiveness of concrete can be improved in compounding, the formation of intercommunicating pore in concrete is reduced, to reach raising coagulation
The effect of native density, impermeability and carbonization resistance.
Further, a kind of production technology of any one of -9 environment-friendly type concretes according to claim 1, including it is following
Step:
S1, respective component cement, fine sand, haydite investment blender stirring 30-50s are weighed；
The blender that S2, the regenerative micro powder for weighing respective component, flyash, miberal powder are added in S1 step continues to be stirred 20-
40s, the water for adding one third proportion component continue stirring 20-30s and are mixed into the uniform mortar of color；
S3, water, reinforcement recycled aggregate, air entraining agent, water-reducing agent, the waterproofing agent that remaining proportion component is added into S2 step continue to stir
Mix 50-80s to be uniformly mixed.
By using above-mentioned technical proposal, cement, fine sand, haydite are pre-mixed, then weigh powder regenerative micro powder, fine coal
Ash, miberal powder addition continue to be stirred, and coarse aggregate quality is larger with volume, and when stirring is more violent, and the grains such as flyash, miberal powder
It spends small, fugitive dust is easy when mixing, by being pre-mixed, blending mineral material is uniformly mixed, reduces coarse aggregate with miberal powder, flyash
Incorporation time, to reduce fugitive dust；Water is played as diluent to be soaked cement, flyash and miberal powder etc. and forms gelinite
Effect, aggregate can be glued it is cemented be scheduled on inside concrete, increase the underlying strength of concrete；Air entraining agent and concrete is added
Mix is stirred together, can be made to generate many closings and stable minute bubbles in concrete mix, be played lubrication bone
The effect of material improves the mobility and mixing uniformity of concrete mix；Gas tracting subtractive agent cooperates air entraining agent, further increases
Dispersing uniformity in concrete mix between particle increases the plasticizing of concrete so as to reduce the usage amount of water
Effect, so that the slump-loss of concrete is smaller.
In conclusion the invention has the following advantages:
1. introducing reinforcement recycled aggregate in this programme in concrete, regenerated coarse aggregate, recycled fine aggregate are passed through into reinforcement slurries
Immersion, filter, dry so that regenerated coarse aggregate, the crackle on raw fine aggregate surface and inside obtain it is a degree of
Reinforcement and reparation, and then achieve the effect that improve recycled aggregate intensity；
2. being provided in this programme including super finely ground slag, flyash, PVA, sodium metasilicate reinforcement modifying agent as main component, use
The reinforcement modifying agent carries out reinforcement and reparation to recycled aggregate；
3. the haydite added in concrete mix in this programme, miberal powder, flyash etc. are all the resource utilizations of waste material,
For environmental protection, increasing economic efficiency etc. is of great significance.
Specific embodiment
Invention is further described in detail with reference to embodiments.
The preparation example 1-3 of reinforcement modifying agent
The raw material proportioning of reinforcement modifying agent in 1 preparation example 1-3 of table
Preparation example 1: according to the proportion in table 1,30 parts of super finely ground slags are added into blender, then successively by 10 parts of flyash, 5 parts
Blender is added in PVA, 5 parts of sodium metasilicate, finally adds remaining 30 parts of super finely ground slags, adjusts blender revolving speed to 120rpm, stirs
1min is mixed, 5min is stood, releases the premix of reinforcement modifying agent, then ball mill, grinding is added in reinforcement modifying agent premix
The dispersion of reinforcement modifying agent is made in 30min, spare.
Preparation example 2: according to the proportion in table 1,35 parts of super finely ground slags are added into blender, then successively by 13 parts of fine coal
Blenders are added in ash, 8 parts of PVA, 8 parts of sodium metasilicate, finally add remaining 35 parts of super finely ground slags, adjust blender revolving speed to
150rpm stirs 2min, stands 8min, releases the premix of reinforcement modifying agent, then ball mill is added in reinforcement modifying agent premix,
45min is ground, the dispersion of reinforcement modifying agent is made, it is spare.
Preparation example 3: according to the proportion in table 1,40 parts of super finely ground slags are added into blender, then successively by 15 parts of fine coal
Blenders are added in ash, 10 parts of PVA, 10 parts of sodium metasilicate, finally add remaining 40 parts of super finely ground slags, adjust blender revolving speed to
180rpm stirs 3min, stands 10min, releases the premix of reinforcement modifying agent, then ball milling is added in reinforcement modifying agent premix
Machine grinds 60min, and the dispersion of reinforcement modifying agent is made, spare.
The preparation example 4-8 of reinforcement regenerated coarse aggregate
The raw material proportioning of reinforcement recycled aggregate in 2 preparation example 4-8 of table
Preparation example 4: according to the proportion in table 2, will mix in 52 parts of reinforcement modifying agent additions, 78 parts of water, form reinforcement slurry
Liquid, then 404 parts of regenerated coarse aggregate is added into reinforcement slurries, 116 parts of recycled fine aggregate is stirred 10min, in slurries
Before initial set, recycled aggregate is filtered, is dried, so that reinforcement recycled aggregate be made.
Preparation example 5: according to the proportion in table 2, will mix in 55 parts of reinforcement modifying agent additions, 82.5 parts of water, is formed and is mended
Strong slurries, then 385 parts of regenerated coarse aggregate is added into reinforcement slurries, 165 parts of recycled fine aggregate is stirred 11min,
Before slurries initial set, recycled aggregate is filtered, is dried, so that reinforcement recycled aggregate be made.
Preparation example 6: according to the proportion in table 2,58 parts of reinforcement modifying agent is added in 87 parts of water and carry out mixed dissolution, formed
Reinforcement slurries, then 369 parts of regenerated coarse aggregate is added into reinforcement slurries, 211 parts of recycled fine aggregate is stirred 12min,
Before slurries initial set, recycled aggregate is filtered, is dried, so that reinforcement recycled aggregate be made.
Preparation example 7: according to the proportion in table 2,62 parts of reinforcement modifying agent is added in 93 parts of water and carry out mixed dissolution, formed
Reinforcement slurries, then 482 parts of regenerated coarse aggregate is added into reinforcement slurries, 138 parts of recycled fine aggregate is stirred 13min,
Before slurries initial set, recycled aggregate is filtered, is dried, so that reinforcement recycled aggregate be made.
Preparation example 8: according to the proportion in table 2,65 parts of reinforcement modifying agent is added in 97.5 parts of water and carry out mixed dissolution, shape
At reinforcement slurries, then 505 parts of regenerated coarse aggregate is added into reinforcement slurries, 145 parts of recycled fine aggregate is stirred
15min is filtered recycled aggregate, dries before slurries initial set, so that reinforcement recycled aggregate be made.
Embodiment
Embodiment 1:
First weigh 110 parts of cement, 100 parts of fine sands, 60 parts of haydites, investment blender stirs 30s, add 15 parts of regenerative micro powders,
60 parts of flyash, 60 parts of miberal powders continue to stir 20s, add 33 parts of water and continue to be stirred 20s, form the uniform sand of color
67 parts of water, the reinforcement recycled aggregate in 520 parts of preparation examples 4,1 part of air entraining agent, 1.5 parts of water-reducing agents, 5 parts of waterproofs are then added in slurry
Agent continues to be stirred 50s, and slurry is uniformly mixed.
Embodiment 2:
First weigh 120 parts of cement, 110 parts of fine sands, 65 parts of haydites, investment blender stirs 35s, add 18 parts of regenerative micro powders,
70 parts of flyash, 70 parts of miberal powders continue to stir 25s, add 37 parts of water and continue to be stirred 25s, form the uniform sand of color
Slurry, be then added 73 parts of water, the reinforcement recycled aggregate in 550 parts of preparation examples 5,1.5 parts of air entraining agents, 1.8 parts of water-reducing agents, 6 parts it is anti-
Aqua continues to be stirred 60s, and slurry is uniformly mixed.
Embodiment 3:
First weigh 135 parts of cement, 120 parts of fine sands, 70 parts of haydites, investment blender stirs 40s, add 20 parts of regenerative micro powders,
120 parts of flyash, 100 parts of miberal powders continue to stir 30s, add 42 parts of water and continue to be stirred 30s, it is uniform to form color
83 parts of water, the reinforcement recycled aggregate in 580 parts of preparation examples 6,2 parts of air entraining agents, 2 parts of water-reducing agents, 7 parts of waterproofs are then added in mortar
Agent continues to be stirred 70s, and slurry is uniformly mixed.
Embodiment 4:
First weigh 150 parts of cement, 130 parts of fine sands, 75 parts of haydites, investment blender stirs 50s, add 22 parts of regenerative micro powders,
140 parts of flyash, 110 parts of miberal powders continue to stir 40s, add 47 parts of water and continue to be stirred 40s, it is uniform to form color
93 parts of water, the reinforcement recycled aggregate in 620 parts of preparation examples 7,2.5 parts of air entraining agents, 2.5 parts of water-reducing agents, 8 parts are then added in mortar
Waterproofing agent continues to be stirred 80s, and slurry is uniformly mixed.
Embodiment 5:
First weigh 160 parts of cement, 140 parts of fine sands, 80 parts of haydites investment blenders stirring 50s, add 25 parts of regenerative micro powders,
150 parts of flyash, 120 parts of miberal powders continue to stir 40s, add 50 parts of water and continue to be stirred 40s, it is uniform to form color
Mortar, be then added 100 parts of water, the reinforcement recycled aggregate in 650 parts of preparation examples 8,3 parts of air entraining agents, 3 parts of water-reducing agents, 10 parts it is anti-
Aqua continues to be stirred 80s, and slurry is uniformly mixed.
Comparative example
Comparative example 1: the difference from embodiment 1 is that not carrying out reinforcement solutions using reinforcement modifying agent to recycled aggregate；
Comparative example 2: the difference from embodiment 1 is that being not added with haydite；
Comparative example 3: the difference from embodiment 1 is that being not added with air entraining agent；
Comparative example 4: the difference from embodiment 1 is that being not added with water-reducing agent；
Comparative example 5: being the embodiment 1 in the Chinese patent application file of CN106007563B as control using notification number, a kind of
The ecological environment-friendly type pervious concrete prepared using castoff concrete, the raw material including following weight percent: recycled aggregate
Composition 79.5%, regeneration concrete micro mist 1.2%, cement 14% are granulated ferrochrome ground-slag 2.4%, and polycarboxylic acids agent 0.1% changes
Property agent 0.1%, welan gum 0.1%, surplus is water；Recycled aggregate composition by 2.36-4.75mm gradation recycled fine aggregate and
The regenerated coarse aggregate of 4.75-9.5mm gradation is formed according to the weight ratio of 1:2；It is granulated Bi Biao Mian Ji≤400m of ferrochrome ground-slag2/
kg；Modifying agent is that ethylenediamine tetraacetic methyl fork Alendronate and polyisobutylene succinamide are made according to the weight ratio of 1:1.6；Again
Bi Biao Mian Ji≤400m of raw micro mist2/kg。
Performance detection
6 block concrete standard sample blocks are respectively prepared according to the method for embodiment 1-5, comparative example 1-5, and are detected in accordance with the following methods
The properties of standard sample block, the test result of concrete sample block as made from the same embodiment are averaged, test knot
Fruit is as shown in table 3:
1, the slump: GB/T 50080-2002 " Standard for test methods of properties of ordinary concrete mixture standard " tests concrete mixing
Slump when object 30min；
2, compression strength: according to GB/T 50081-2002 " standard for test methods of mechanical properties of ordinary concrete " production standard examination
Block, and measurement standard test block maintenance 28 days, 60 days compression strength；
The performance test results of standard concrete test block made from 3 the above various embodiments of table
As can be seen from Table 3, the 30min slump of embodiment 1-5 sample is between 129-140mm, comparative example 1-5 sample
For the 30min slump between 130-140mm, testing result is in same level, no significant difference.
In terms of compression strength, from 28 days compression strength, compression strength testing result was seen within 60 days, the inspection of embodiment 1-5 sample
It surveys result to be apparently higher than in the testing result of comparative example 1,5 sample of comparative example, illustrates to carry out renovation reinforced processing to recycled aggregate,
The intensity of recycled aggregate can be improved, to reach the compression strength for improving the concrete using recycled aggregate preparation；
28 days of sample in comparative example 2,60 days compression strength testing results it is relatively low compared with embodiment 1-5, illustrate addition pottery
Grain can increase the structural strength of inside concrete, and grieved improves concrete entire compression intensity；Comparative example 3,4 pilot scale of comparative example
28 days, the slightly reduction compared with embodiment 1-5 of 60 days compression strength testing results of sample, illustrate the addition of air entraining agent, water-reducing agent
The mobility of concrete mix can be improved, to keep concrete mix mixing more uniform, also helped to a certain extent
In the compression strength for improving concrete.
This specific embodiment is only explanation of the invention, is not limitation of the present invention, those skilled in the art
Member can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but as long as at this
All by the protection of Patent Law in the scope of the claims of invention.
Claims (10)
1. a kind of environmental type concrete, it is characterised in that: contain the following parts by weight: reinforcement recycled aggregate 520-
650 parts, 15-25 parts of regenerative micro powder, 100-140 parts of fine sand, 60-80 parts of haydite, 110-160 parts of cement, 60-150 parts of flyash,
60-120 parts of miberal powder, 5-10 parts of waterproofing agent, 1.5-3 parts of water-reducing agent, 1-3 parts of air entraining agent, 100-150 parts of water；
The reinforcement recycled aggregate is the reinforcement regenerated coarse aggregate and reinforcement recycled fine aggregate group by mass ratio for 3.5:(1-2)
At.
2. a kind of environmental type concrete according to claim 1, it is characterised in that: the group comprising following parts by weight
Point: 550-620 parts of reinforcement recycled aggregate, 18-22 parts of regenerative micro powder, 110-130 parts of fine sand, 65-75 parts of haydite, cement 120-
150 parts, 70-140 parts of flyash, 70-110 parts of miberal powder, 5-10 parts of waterproofing agent, 1.5-3 parts of water-reducing agent, 1-3 parts of air entraining agent, water
110-140 parts.
3. according to claim 1 or a kind of 2 described in any item environmental type concrete, it is characterised in that: the reinforcement is again
The preparation method of raw aggregate the following steps are included:
S1, discarded concrete is put into jaw crushing crusher machine；
S2, broken concrete particle is sieved, scalping；
S3, the discarded concrete particles with water after screening is rinsed, is dried；
S4, will dry after concrete particle carry out regrading, forms granularity as the recycled fine aggregate and 5-8mm of 2-5mm
Regenerated coarse aggregate；
S5, reinforcement modifying agent, water are mixed according to the ratio that mass ratio is 2:3, forms reinforcement slurries, is according to solid-liquid mass ratio
Recycled aggregate is added in reinforcement slurries respectively for the ratio of 4:1, is stirred 10-15min, before slurries initial set, to regeneration
Aggregate is filtered, dries, so that reinforcement recycled aggregate be made.
4. a kind of environmental type concrete according to claim 3, it is characterised in that: the reinforcement in the step S5 changes
Property agent contains the following parts by weight: 60-80 parts of super finely ground slags, 10-15 parts of level-one flyash, 5-10 parts of PVA, 5-10 parts of silicon
Sour sodium.
5. a kind of environmental type concrete according to claim 4, it is characterised in that: the preparation of the reinforcement modifying agent
Method the following steps are included:
S1, respective components are weighed according to the proportion, it is spare；
S2, the super finely ground slag that half component is added into blender, then successively by weighed level-one flyash, PVA, sodium metasilicate
Blender is added, finally remaining super finely ground slag is added again, adjusting blender revolving speed to 120-180rpm stirs 1-3min, quiet
5-10min is set, the premix of reinforcement modifying agent is released；
S3, ball mill is added in reinforcement modifying agent premix, grinds 30-60min, the dispersion of reinforcement modifying agent is made, it is spare.
6. a kind of environmental type mixed mud according to claim 1, it is characterised in that: the waterproofing agent is aqueous organic
Silicon waterproofing agent.
7. a kind of environmental type mixed mud according to claim 1, it is characterised in that: the water-reducing agent is sulfomethylated lignin
Hydrochlorate, the lignosulfonates are one or more of sodium lignin sulfonate, calcium lignosulfonate, magnesium lignosulfonate.
8. a kind of environmental type mixed mud according to claim 1, it is characterised in that: the air entraining agent is rosin acid
One or both of sodium, triterpenoid saponin.
9. a kind of environmental type concrete according to claim 1, it is characterised in that: the miberal powder is S95 grades of miberal powders,
Specific surface area is 400-450m2/ kg, moisture content 0.4%-0.6%.
10. a kind of production technology of any one of -9 environmental type concrete according to claim 1, it is characterised in that: packet
Include following steps:
S1, respective component cement, fine sand, haydite investment blender stirring 30-50s are weighed；
The blender that S2, the regenerative micro powder for weighing respective component, flyash, miberal powder are added in S1 step continues to be stirred 20-
40s, the water for adding one third proportion component continue stirring 20-40s and are mixed into the uniform mortar of color；
S3, water, reinforcement recycled aggregate, air entraining agent, water-reducing agent, the waterproofing agent that remaining proportion component is added into S2 step continue to stir
Mix 50-80s to be uniformly mixed.
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| CN110845184A (en) * | 2019-11-18 | 2020-02-28 | 北京太平洋水泥制品有限公司 | Recycled aggregate concrete and preparation method thereof |
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| CN114804779B (en) * | 2022-05-24 | 2023-01-31 | 四川水发建设有限公司 | Impervious concrete and preparation method thereof |
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Application publication date: 20190806 |