CN107840635A - A kind of additive of inorganic pervious concrete - Google Patents

A kind of additive of inorganic pervious concrete Download PDF

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Publication number
CN107840635A
CN107840635A CN201711136632.0A CN201711136632A CN107840635A CN 107840635 A CN107840635 A CN 107840635A CN 201711136632 A CN201711136632 A CN 201711136632A CN 107840635 A CN107840635 A CN 107840635A
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China
Prior art keywords
additive
cement
pervious concrete
water reducer
inorganic
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CN201711136632.0A
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CN107840635B (en
Inventor
刘庆丰
刘子漩
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Yangzhou Kang Ningxin Mstar Technology Ltd
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Yangzhou Kang Ningxin Mstar Technology Ltd
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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
    • C04B28/34—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 cold phosphate binders
    • 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
    • C04B28/02—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 hydraulic cements other than calcium sulfates
    • C04B28/04—Portland cements
    • 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
    • C04B28/02—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 hydraulic cements other than calcium sulfates
    • C04B28/06—Aluminous cements
    • 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
    • C04B2111/00241—Physical properties of the materials not provided for elsewhere in C04B2111/00
    • C04B2111/00284—Materials permeable to liquids
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength

Abstract

The present invention provides a kind of additive of inorganic pervious concrete, and the preparing raw material of the additive comprises at least：Cement, silicon ash, water reducer, redispersable latex powder, cellulose ether, calcium formate, polyvinyl alcohol, pigment；The present invention provides a kind of additive of inorganic pervious concrete, while retaining script concrete permeable rate, improves its intensity and bearing capacity, is provided simultaneously with certain smoothness, reduce maintenance and the service life in later stage.

Description

A kind of additive of inorganic pervious concrete
Technical field
The present invention relates to a kind of concrete additive, is more related to a kind of additive of inorganic pervious concrete.
Background technology
Pervious concrete is also known as celluar concrete, and permeable terrace, it is to be stirred to make the one kind formed by aggregate, cement and water Porous light concrete, it is free of fine aggregate, and it is equal to form hole by coarse aggregate Surface coating a thin layer cement mortar mutually bonding The alveolate texture of even distribution, therefore there is the characteristics of ventilative, permeable and in light weight, alternatively referred to as without husky concrete.
Pervious concrete has high water-permeability, and permeable terrace possesses 15-25% hole, can reach permeable speed 31-52 liters/m/h, the exclusion speed under significantly larger than maximally effective drainage arrangement；It is permeable mixed compared with normal concrete Solidifying soil has ventilative, permeable, sqouynd absorption lowering noise, purifying water body, improves surface soil.
Due to only including aggregate, cement and water in pervious concrete material, lack tie point between its aggregate, thus it is permeable Although concrete material possesses excellent water penetration, but its intensity and bearing capacity often do not reach used in real life will Ask；Secondly, pervious concrete includes permeable face and permeable base, it is permeable after water evacuation and frost heave performance, and influence permeable mix Coagulate one of factor of soil；Furthermore due to the blocking that pervious concrete easily causes dust due to possessing aperture, subsequently it is also often desirable to Artificial nursing, while also to carry out drainage measure.
For the above situation, the present invention provides a kind of additive of inorganic pervious concrete, retains script concrete permeable While rate, its intensity and bearing capacity are improved, is provided simultaneously with certain smoothness, reduces maintenance and the service life in later stage.
The content of the invention
The present invention provides a kind of additive of inorganic pervious concrete, and the preparing raw material of the additive comprises at least：Water Mud, silicon ash, water reducer, redispersable latex powder, cellulose ether, calcium formate, polyvinyl alcohol, pigment.
As one embodiment of the present invention, in parts by weight, the preparing raw material of the additive comprises at least：
As one embodiment of the present invention, in parts by weight, the preparing raw material of the additive comprises at least：
As one embodiment of the present invention, the cement is selected from portland cement, aluminate cement, aluminium sulfate water At least one of mud, ferrous aluminate cement, fluoroaluminate cement, phosphate cement.
As one embodiment of the present invention, the water reducer is selected from lignin sulfonate water reducer, sulfamic acid At least one of salt based water reducer, fatty acid series water reducer, polycarboxylate based water reducer.
As one embodiment of the present invention, the water reducer is polycarboxylate based water reducer.
As one embodiment of the present invention, the fineness of the silicon ash in the silicon ash more than 80% is less than 1 μm.
As one embodiment of the present invention, the average grain diameter of the silicon ash is at 0.1~0.3 μm.
As one embodiment of the present invention, the specific surface area of the silicon ash is 20~28m2/g。
The second aspect of the present invention provides a kind of inorganic pervious concrete, the preparing raw material bag of the inorganic pervious concrete Additive containing above-mentioned inorganic pervious concrete.
Embodiment
Participate in the election of the detailed description of the invention below for being preferable to carry out method and including embodiment this hair can be more easily understood Bright content.Unless otherwise defined, all technologies used herein and scientific terminology have common with art of the present invention The identical implication that technical staff is generally understood that.When contradiction be present, the definition in this specification is defined.
As used herein term " by ... prepare " it is synonymous with "comprising".Term "comprising" used herein, " comprising ", " having ", " containing " or its any other deformation, it is intended that cover including for non-exclusionism.For example, the combination comprising listed elements Thing, step, method, product or device are not necessarily limited to those key elements, but can include not expressly listed other key elements or Such a composition, step, method, product or the intrinsic key element of device.
Conjunction " Consists of " excludes any key element do not pointed out, step or component.If be used in claim, this Phrase will make claim be closed, it is not included the material in addition to the material of those descriptions, but relative normal Except rule impurity.When being rather than immediately following in the clause that phrase " Consists of " appears in claim main body after theme, It is only limited to the key element described in the clause；Other key elements are not excluded outside the claim as entirety.
Equivalent, concentration or other values or parameter are excellent with scope, preferred scope or a series of upper limit preferred values and lower limit During the Range Representation that choosing value limits, this, which is appreciated that, specifically discloses by any range limit or preferred value and any scope All scopes that any pairing of lower limit or preferred value is formed, regardless of whether the scope separately discloses.For example, when open During scope " 1 to 5 ", described scope should be interpreted as including scope " 1 to 4 ", " 1 to 3 ", " 1 to 2 ", " 1 to 2 and 4 to 5 ", " 1 to 3 and 5 " etc..When number range is described herein, unless otherwise indicated, otherwise the scope is intended to include its end Value and all integers and fraction within the range.
Singulative includes plural number and object is discussed, unless the context clearly dictates otherwise." optional " or it is " any It is a kind of " refer to that the item that describes thereafter or event may or may not occur, and the description include situation that event occurs and The situation that event does not occur.
Approximate term in specification and claims is used for modifying quantity, and it is specific to represent that the present invention is not limited to this Quantity, include the part of the amendment of the acceptable change without cause related basic function close to the quantity.Phase Answer, modify a numerical value with " about ", " about " etc., mean that the invention is not restricted to the exact numerical.It is approximate in some examples Term likely corresponds to the precision of the instrument of measured value.In present specification and claims, scope limits can be with Combine and/or exchange, these scopes include all subranges contained therebetween if not stated otherwise.
In addition, indefinite article " one kind " before key element of the present invention or component and "one" to key element or the quantitative requirement of component (i.e. occurrence number) unrestriction.Therefore "one" or " one kind " should be read as including one or at least one, and odd number The key element or component of form also include plural form, unless the obvious purport of the quantity refers to singulative.
The present invention provides a kind of additive of inorganic pervious concrete, and the preparing raw material of the additive comprises at least：Water Mud, silicon ash, water reducer, redispersable latex powder, cellulose ether, calcium formate, polyvinyl alcohol, pigment.
Cement
Cement, for raw material, coordinates the energy for firing the powdery formed by a certain percentage with lime stone, clay and a small amount of iron sand etc. The binder materials hardened in water.The species of cement is a lot, and silicate, phosphate, aluminate three can be divided into by forming difference by it Big system；Bu Tong there are portland cement, slag cements, ordinary cement, pozzolan cement, fine coal carbon again by its raw material and purposes The kind of major class tens of cement five.The cement grade that China uses has No. 200, No. 250, No. 300, No. 500, No. 600 etc. 12 Kind.Cement grade is to represent the parameter of strength of cement size.Cement and standard sand are pressed 1：3 coordinate, and make certain specification Cement cube, surveys its compression strength and tensile strength of the 28th day under certain condition, and the intensity of its resistance to compression and tension is higher, The label of cement is also higher.Cement is the important source material of building material industry, and the horizontal height reflection country of cement industry builds The height of industrial level.
In the present invention, the cement is not specifically limited, and can be portland cement, aluminate cement, aluminium sulfate water At least one of mud, ferrous aluminate cement, fluoroaluminate cement, phosphate cement.
Portland cement：All Portland clinkers based on calcium silicates, less than 5% lime stone or granulated blast-furnace ore deposit Slag, hydraulic cementing materials made of proper amount of gypsum is levigate, is referred to as portland cement, is referred to as Portland cement in the world.
The essential mineral of portland cement forms：Tricalcium silicate, dicalcium silicate, tricalcium aluminate, tetra calcium aluminoferrite.Silicic acid DFP decides the intensity in four week of portland cement；Ability Developed fiber strength acts on after the week of dicalcium silicate four, about one year left side The right side reaches the Developed fiber strength in four week of tricalcium silicate；Tricalcium aluminate intensity plays comparatively fast, but low intensity, and it is to portland cement Intensity at 1 to 3 day or slightly in long-time plays a role；The intensity performance of tetra calcium aluminoferrite is also very fast, but low intensity, It is small to the intensity contribution of portland cement.
Aluminate cement：Aluminate cement be using bauxite and lime stone as raw material, through calcine it is obtained using calcium aluminate as The clinker of main component, alumina content about 50%, regrinds manufactured hydraulic cementing materials.Aluminate cement is often to be yellow or brown Color, also there is gray.The essential mineral of aluminate cement turns into monocalcium aluminate and other aluminates, and a small amount of silicic acid Dicalcium etc..Color is mostly grey and white.
Aluminate cement is under the conditions of Ordinary hardening, due to being free of tricalcium aluminate and calcium hydroxide in Behavior of Hardened Cement Paste, and it is closely knit Spend anti-sulphates corrosive effect that is larger, therefore having very strong.Aluminate cement has higher heat resistance.
But the long-term strength of aluminate cement and other performances have the trend of reduction, long-term strength about reduces by 40%~50% Left and right, therefore aluminate cement should not be used in the structure of long-term load-bearing and be in the engineering of hot and humid environment, it is only applicable In urgent military engineering (building the road, bridge), salvaging (leak stopping etc.), temporary work, and prepare heat resistance concrete etc..
Coagulated in addition, aluminate cement mutually mixes not only to produce to dodge with portland cement or lime, and due to generating high alkalinity Drated calcium aluminate, make concrete cracking, or even destroy.When therefore constructing in addition to it must not be mixed with lime or portland cement, Also use must not be contacted with unhardened portland cement.
Sulphate aluminium cement：Large number of gypsum and bauxite are used in sulphate aluminium cement production raw material, with silicon Acid salt cement is compared, produce clinker when as caused by raw material CO2Gas is greatly reduced.It is main in sulphate aluminium cement Mineral CaSO4Hydraulic cement 3Al can also be formed during aquation without the gypsum of calcining with reference to larger amt2O33CaO materials, Its gelation efficiency is high compared with Portland cement, and it is with 3CaO3Al2O3·CaSO4Based on mineral.
Ferrous aluminate cement：Ferrous aluminate cement be 70~eighties of 20th century by China Building Materials Academy from Main research and development, clinker mineral composition is with anhydrous calcium sulphoaluminate (C4A3S), dicalcium silicate (C2S the binder materials) and based on iron phase, With calcining heat is low, early strengthening and high strengthening, the good characteristic such as impervious, freeze proof, anticorrosive.Its clinker is generally with lime stone, alumina, stone Cream is that raw material is calcined at (1350 ± 50) DEG C and formed.
Fluoroaluminate cement：One kind is with calcium aluminum fluoride 3CaO3Al2O3·CaF2For the quick-setting and rapid-hardening cement mainly formed, Also known as double-quick cement.Using lime stone, alumina and fluorite as raw material, calcined and ripe material at 1340-1400 DEG C, add proper amount of gypsum With a certain amount of slag is common levigate forms.The cement setting time only has a few minutes at normal temperatures, and 1h starches intensity up to 15- only 25MPa.Can set-retarding admixture regulation setting time.Fluoroaluminate cement can be used for rushing to repair, the engineering such as leak stopping, it can also be used to molding sand Binding agent.
Phosphate cement：Phosphate cement can be used to that a variety of heat-resisting and stabilizing materials, anti-corrosion and electric insulation material is made Expect coating and high-effect glue etc..Phosphate cement mainly includes aluminum phosphate cement, magnesium phosphate cement and ammonium phosphate cement.
Silicon ash
Silicon ash, also known as silica dust, silica flour and silicon cigarette, refined caused by silicon containing steel iron material by the powder of electrostatic precipitation recovery Dirt.The recovery process of silicon ash mainly has two kinds：First, reclaimed (dry-extraction method) using large-scale dust collection device, silicon ash after recovery Grain is small, and activity is high, has very high commercial feature, but reclaimer cost is high, power consumption is big, freight is high, at present Mainly large enterprise uses；Another kind is reclaimed (wet row's method) by the circulation of water, this method technique it is simple and Cost is low, but the silicon ash reclaimed is largely stacked, without the value of secondary use.
The early anti pressured intension of concrete can be improved in silicon ash incorporation concrete, strengthens the anti-folding of bending resistance and bullet of concrete Property modulus, reduce concrete reclaimed water, the permeability of chlorion, improve durability, strengthen anti-wear performance and shock resistance load performance. Silicon ash is mainly used in high-strength concrete, repaired in the special engineerings such as concrete, pipeline, dam.
Silicon ash can play micro-aggregate filling effect in hardening system, improve the pore structure of hardening system.Silicon ash is to big Most sulfate attacks have obvious inhibitory action, but resisting aluminum sulphate improver does not have actively impact but.Because silicon ash has There is certain pozzolanic activity, and have humidification for the interfacial transition zone of concrete, so most researchs think that silicon ash can increase The freeze-thaw resistance of reinforced concrete.
There is agglomeration in silicon ash, silicon ash is not related for the improvement result of slurry and cluster therein in net slurry, And cluster part may be harmful to for the performance and microstructure of slurry, it should be noted that taking effectively in the application of encryption silicon ash Measure avoids this phenomenon.
As one embodiment of the present invention, the fineness of the silicon ash in the silicon ash more than 80% is less than 1 μm, and described For the average grain diameter of silicon ash at 0.1~0.3 μm, the specific surface area of the silicon ash is 20~28m2/g。
Water reducer
Water reducer refers to keeping fresh concrete application performance close under identical basic condition, by adding concrete Additive significantly reduces a kind of additive of water consumption required during mix.Water reducer has its unrivaled advantage：It The mobile performance of concrete can significantly be improved, beneficial to construction, efficiency of construction is greatly improved, it is possible to reduce mix Shi Suoxu water, the ratio of mud is reduced, meanwhile, under conditions of concrete has almost identical workability and intensity, diminishing The use of agent can reduce cement consumption, so can be with cost-effective while also have certain help to make the intensity of concrete With, furthermore it can also reduce because the undesirable elements such as drying shrinkage cause the influence of concrete defect, it can more prepare high intensity, height The concrete of performance.
In the present invention, the water reducer is selected from lignin sulfonate water reducer, sulfamate based water reducer, aliphatic acid At least one of based water reducer, polycarboxylate based water reducer.
As a kind of preferred embodiment of the present invention, the water reducer is polycarboxylate based water reducer.
Both physical action between clay mineral and polycarboxylate water-reducer being present, there is also chemical action.Physical action：It is viscous Native mineral adsorb polycarboxylate water-reducer on its surface；Chemical action：Clay mineral adsorbs the side chain of polycarboxylate water-reducer In the interlayer of clay mineral.
It is as follows as a kind of preferred embodiment of the present invention, the preparation method of the polycarboxylate based water reducer：By weight 30 parts of isopentene group APEOs, 42 parts of deionized waters are added into reactor, after being well mixed, 80 DEG C is warming up to, adds 0.16 part of sodium hydrogensulfite, acrylic acid/deionized water (3.2 parts of acrylic acid, 4.8 parts of deionized waters) and ammonium persulfate/is added dropwise and goes Ionized water (0.24 part of ammonium persulfate, 1.6 parts of deionized waters), after being added dropwise, continue to react 2h, cool to 40 DEG C, adjust pH Value 7-8, obtain polycarboxylate based water reducer solution；Polycarboxylate based water reducer solution is placed in vacuum ultrasonic microwave drying oven In, solution deep 6cm, the vacuum in vavuum pump regulation drying box is opened to -0.09--0.08MPa；Ultrasonic wave frequency is set Rate is 30kHz, and the power of the supersonic generator is 100W, opens microwave generator, microwave frequency 2450MHz, sets Drying temperature is 55 DEG C, and adjusts range of microwave power to 200kW, dries 3h, obtains polycarboxylate based water reducer.
Redispersable latex powder
Redispersible polymer powder, it is called redispersible toner, Redispersible Polymeric Emulsion Powder, reemulsifiable Polymer glue powder etc., refer to by the way that after emulsion polymerization, the technique such as spray-dried, freeze-drying or rotary flash distillation is dehydrated at efflorescence Obtained polymer powder is managed, can be dispersed in water again after adding water, generates stable dispersion liquid, and there is original copolymer emulsion Performance.
Redispersable latex powder is a kind of plus water can be dispersed in water the stable dispersion liquid of generation again, and with original poly- The polymer powder of the similar performance of compound emulsion.Polymer emulsion is usually obtained by emulsion polymerization, after coordinating certain auxiliary agent It is prepared by drying process with atomizing dehydration.Redispersable latex powder is primarily used to additives for building materials, can with it is inorganic Binding material is used together, and carries out toughening modifying to concrete, cement mortar etc., it may also be used for powdery paints and powder adhesive Deng.Redispersible rubber powder has an important advantage compared with conventional emulsions：It can in advance with cement, aggregate and other formula Component etc. carries out dry mixing and forms powder mixture together, directly uses at the construction field (site).In addition, using redispersable latex powder as base Plinth prepares dry powder paint, is one of important applied field of redispersable latex powder.
As one embodiment of the present invention, the redispersable latex powder is divided into the copolymerization of ethylene/vinyl acetate Thing, vinyl acetate/versatic acid ethylene copolymer, acrylic copolymer etc..
As one embodiment of the present invention, the redispersable latex powder is acrylic copolymer.
As one embodiment of the present invention, the preparation method of the redispersable latex powder is as follows：
(1) by 100 parts of deionized waters, 1 part of NaHCO3, 1.5 parts of dodecyl Biphenyl Ether sodium sulfonate and 0.5 part of potassium peroxydisulfate Put into reactor, stir, when heating water bath is warming up to 80 DEG C, 15 parts of butyl acrylate is then slowly added dropwise, and together When make system temperature maintain 80 DEG C reaction a period of time.15min is incubated after dripping.Then start that residue 0.5 is slowly added dropwise Part potassium peroxydisulfate and 135 parts of butyl acrylates, after solution drips off, in 80 DEG C of insulation reaction 30min；
(2) 0.5 part of potassium peroxydisulfate, 1.5 parts of dodecyl Biphenyl Ether sodium sulfonates and 135 parts of styrene and 15 parts of 1- second are weighed Alkene -1- fluoro- 1,3,3- trimethoxy silanes (No. CAS is 135764-50-0) are dissolved completely in 150 parts of deionized waters, are added dropwise Into the above-mentioned mixed liquor of step (1), control emulsion system reaction temperature is controlled and is added dropwise in 2h at 80 DEG C or so, is protected Stop heating, after being cooled to room temperature, filtering and discharging after warm 1h.
No. CAS is：135764-50-0 structural formula：
Cellulose ether
There is the high-molecular compound of ether structure made of cellulose.Each glucose basic ring contains in cellulose macromolecule There are three hydroxyls, the primary hydroxyl on the 6th carbon atom, the secondary hydroxyl on second and third carbon atom, the hydrogen in hydroxyl are taken by alkyl Generation and generate cellulose ether derivatives.It is the product that the hydrogen of hydroxyl in cellulosic polymer is substituted by alkyl.Cellulose is A kind of polyhydroxy high-molecular compound for both not dissolved or not melted.Can be then dissolved in after cellulose is etherified water, dilute alkaline soln and Organic solvent, and there is thermoplasticity.
Heretofore described cellulose ether is that cellulose ether is modified mesoporous silicon oxide；Specific reactions steps are as follows：
(1) 1 parts by weight absorbent cotton is added into reactor, is melted in the 1- butyl -3- methylimidazole villaumites of 5 parts by weight In, in N2In 100 DEG C of stirring reaction 12h under gas shielded, the solution of clear viscous is obtained；60 DEG C are warming up to, adds 0.075 weight Part ammonium persulfate, stirs 0.5h, and the mass fraction that 2 parts by weight are added dropwise is 40% sodium acrylate solution, after being added dropwise, is added The benzoyl peroxide of 0.01 parts by weight, 3h is incubated, room temperature is cooled to, obtains copolymerized solution；Copolymerized solution is added into 10 weight In 80 DEG C of atoleines of part, 0.4 parts by weight butyl stearate is added, 1h is incubated, is cooled to room temperature, filters, uses deionization Water washing 3 times, then washed 3 times with acetone, 60 DEG C are dried under reduced pressure 12h, obtain cellulose；
(2) 0.1mol tetraethoxysilane, 0.05mol 2- cyanoethyls triethoxysilane and above-mentioned cellulose are matched somebody with somebody Mixed solution is set to, 0.03mol cetyl trimethylammonium bromides are added into ammoniacal liquor stirring 1-2h, add above-mentioned mixed solution In, still aging 1-2 days at 50-75 DEG C, reaction terminates that reaction solution is made, and filtering, adds absolute ethyl alcohol, continues to stir 1min, Cellulose modified silica is obtained, the weight part ratio of the cellulose and silica is 3：1.
(3) by the cellulose modified silica in step (2), aqueous 5-17% N- methyl morpholine oxides solution and do not have The percentage by weight of propyl galate is 0.1~30:69-99.8:0.1-1, three is well mixed, stir, dissolve be made 0.1%-30% cellulose solution；
(4) 10-70% NaOH solution is quantitatively added to cellulose solution made from step (3), and ensures alkali number and fibre Plain mol ratio is tieed up 4：1, control temperature reacts 60min at 76-150 DEG C, and the cellulose modified silica of alkalization is made；
(5) excessive bromomethane is added into step (4), control temperature reacts 60min, obtain cellulose at 60 DEG C Ether；
(6) cellulose ether that step (5) obtains is transferred in container, adds 60-85% ethanol water washing, together When be added dropwise in hydrochloric acid and excessive alkali is until neutrality, mixed liquor is separated by filtration, repeated washing filters 2-5 times；
(7) dry and crush：The filter cake that step (6) obtains is dried in drier, by grinding to obtain fiber Plain ether product.
Calcium formate
Calcium formate also known as formic acid calcium, molecular formula Ca (HCOO)2White powder, relative density 2.015 are solvable insoluble in alcohol Yu Shui, the solubility with temperature rise change of calcium formate is little, the 16g/100g water at 0 DEG C, 18.4g/100g water at 100 DEG C, 400 DEG C or so heat resolves.Calcium formate has many uses, and can make feed addictive, food industry preservative, leather industry tan Agent, petroleum industry probing auxiliary agent, crop growth conditioning agent etc..
Calcium formate use in various cement mortar and various concrete can shorten the setting time of cement, avoid in the winter time Rate of set is slow under low temperature in construction, and can accelerate the setting rate of cement, shortens the hardening process of cement, and the demoulding is fast, with It is easy to cement products to improve intensity as early as possible and come into operation.By verification experimental verification, calcium formate is a kind of alkali-free of significant effect Type adjustable solidification agent and early strength agent, matching somebody with somebody for a variety of non-alkali cementitious composite additives can be formed by two kinds of utilization ways of calcium formate Than.
Polyvinyl alcohol
Polyvinyl alcohol is a kind of organic compound, and white plates, cotton-shaped or pulverulent solids are tasteless.Be dissolved in water (95 DEG C with On), dimethyl sulfoxide (DMSO) is slightly soluble in, insoluble in gasoline, kerosene, vegetable oil, benzene, toluene, dichloroethanes, carbon tetrachloride, acetone, vinegar Acetoacetic ester, methanol, ethylene glycol etc..Polyvinyl alcohol is important industrial chemicals, for manufacturing Pioloform, polyvinyl acetal, resistance to gasoline pipeline With vinylon synthetic fibers, fabric-treating agent, emulsifying agent, paper coating, adhesive, glue etc..
Dissolving of the polyvinyl alcohol in water is swelling, wireless swelling, dissolving.Polymer molecular chain may produce with hydrated cementitious Thing combines to form boundary layer, ultimately forms the complex structure that polymer and cement-hydrate are interweaved, mutually run through, so as to Greatly improve the mechanical property of cementitious matter.After polyvinyl alcohol adds in cement gel ramming material whipping process, by cutting at a high speed Stirring action is cut, PVA is homogeneously dispersed among system.After adding aqua, cement granules start aquation, constantly consume water, go out Existing porous gel state, and the ability of PVA macromolecular combination water is stronger, causes the distribution of whole system reclaimed water uneven, it is aqueous There is gradient distribution from polymeric micellar from cement granules in amount, and moisture migrates constantly from polymeric micellar to cement granules.This During cement aluminium salt into branch with the active group in polymer rise cross-linking reaction.
As one embodiment of the present invention, the model polyvinyl alcohol 1788 of the polyvinyl alcohol.
Pigment
Also contain pigment, described pigment weight part in the formula of the additive of inorganic pervious concrete provided by the present invention For 0.3-2.5 parts.When it is free of pigment, the additive is conventional color；When it contains pigment, the additive is presented Go out color.
The color of the pigment is selected from the color such as purple, indigo plant, depth, ash, green grass or young crops, green, yellow, red.
Pigment variety is various, there is a variety of sorting techniques, can be divided into natural pigment and synthetic dyestuff by its source；By chemistry into Inorganic pigment and organic pigment can be divided into by dividing；It can be divided into coloring pigment, extender pigment again by its effect in work progress, prevent Become rusty pigment etc..
Coloring pigment is insoluble in the solid matter of the fine powder of base-material.Scattered in the substrate, the meeting by coloring pigment Some performances of product are assigned or promoted, is mainly used to make product that there is various colors and covering power, can divide by its chemical composition For inorganic pigment and the class of organic pigment two, this two classes pigment makes a big difference in performance and purposes, and protective coating makes more With inorganic pigment, decorative coating then mainly uses organic pigment.
Extender pigment is also known as filler, inserts.
Manufacture colored paint mainly use coloring pigment, but because extender pigment is cheap, often with tinting strength, tinting power is high or covering The strong coloring pigment of power coordinates manufacture colored paint, to reduce cost.Density of some extender pigments itself is small, and suspending power is good, can be to prevent The only big pigment precipitation of density.
Extender pigment includes alkali salt, silicate, magnalium light metal compound.Alkali salt includes but is not limited to Blanc fixe (blanc fixe), calcium carbonate (chalk powder, old powder, chalk), calcium sulfate (gypsum)；Silicate includes but is not limited to Talcum powder (magnesium silicate), magnetic native (kaolin, main component are alumina silicate), silica flour, mica powder, flake asbestos, diatomite；Magnalium Light metal compound includes but is not limited to magnesium carbonate, magnesia, aluminium hydroxide.
The fundamental characteristics of pigment includes color, tinting strength, tinting power, light resistance, covering power, dispersiveness and adaptability and resistance to acids and bases.
The second aspect of the present invention provides a kind of inorganic pervious concrete, and its preparing raw material includes provided by the invention inorganic The additive of pervious concrete.
Mechanism is explained：The additive that the present invention provides the inorganic pervious concrete is being added to inorganic pervious concrete In, while inorganic pervious concrete permeability rate can be increased, the intensity of concrete is improved, while assist the hydration process of cement In, stimulate Ca (OH)2Generation, while control Ca (OH)2Crystal orientation intensity, hence it is evident that improve the transition between slurry and aggregate Plot structure, improve the adhesion strength between interface, the overall intensity for improving product.Meanwhile inorganic permeable coagulation provided by the invention Soil, its product have excellent smoothness and frost heave smaller.
The present embodiment of embodiment 1. provides a kind of additive of inorganic pervious concrete, and the preparation of the additive is former Material comprises at least：Cement, silicon ash, water reducer, redispersable latex powder, cellulose ether, calcium formate, polyvinyl alcohol, pigment.
A kind of additive of inorganic pervious concrete described in the embodiment 1 of embodiment 2., it is in parts by weight, described The preparing raw material of additive comprises at least：
A kind of additive of inorganic pervious concrete described in the embodiment 1 of embodiment 3., it is in parts by weight, described The preparing raw material of additive comprises at least：
A kind of additive of inorganic pervious concrete described in the embodiment 1 of embodiment 4., the cement are selected from silicic acid At least one in salt cement, aluminate cement, sulphate aluminium cement, ferrous aluminate cement, fluoroaluminate cement, phosphate cement Kind.
A kind of additive of inorganic pervious concrete described in the embodiment 1 of embodiment 5., the water reducer are selected from wood Mahogany sulfonate class water reducer, sulfamate based water reducer, fatty acid series water reducer, in polycarboxylate based water reducer at least It is a kind of.
A kind of additive of inorganic pervious concrete described in the embodiment 1 of embodiment 6., the water reducer are poly- carboxylic Hydrochlorate based water reducer.
A kind of additive of inorganic pervious concrete described in the embodiment 1 of embodiment 7., exceed in the silicon ash The fineness of 80% silicon ash is less than 1 μm.
A kind of additive of inorganic pervious concrete described in the embodiment 1 of embodiment 8., the average grain of the silicon ash Footpath is at 0.1~0.3 μm.
A kind of additive of inorganic pervious concrete described in the embodiment 1 of embodiment 9., the ratio surface of the silicon ash Product is 20~28m2/g。
The present embodiment of embodiment 10. provides a kind of inorganic pervious concrete, the preparation of the inorganic pervious concrete Raw material includes the additive of the inorganic pervious concrete described in above-mentioned any one of embodiment 1-9.
The present invention is specifically described below by embodiment.It is necessarily pointed out that following examples are only used In the invention will be further described, it is impossible to be interpreted as limiting the scope of the invention, professional and technical personnel in the field Some the nonessential modifications and adaptations made according to the content of the invention described above, still fall within protection scope of the present invention.
In addition, if without other explanations, raw materials used is all commercially available.
Embodiment 1：The present embodiment provides a kind of additive of inorganic pervious concrete, and the preparing raw material of the additive is extremely Include less：90.2 parts of cement, 5.5 parts of silicon ashes, 1.0 parts of water reducers, 2.0 parts of redispersable latex powders, 0.3 part of cellulose ether, 1.0 Part calcium formate, 0.4 part of polyvinyl alcohol, 1.2 parts of pigment.
Cement：Heretofore described cement is aluminate cement, commercially available.
Silicon ash：The fineness of silicon ash in the silicon ash more than 80% is less than 1 μm, and the average grain diameter of the silicon ash is 0.1 ~0.3 μm, the specific surface area of the silicon ash is 20~28m2/ g, it is commercially available.
Water reducer：Water reducer described in the present embodiment is polycarboxylate based water reducer, and specific preparation method is as follows：By weight Part adds 30 parts of isopentene group APEOs, 42 parts of deionized waters into reactor, after being well mixed, is warming up to 80 DEG C, adds Enter 0.16 part of sodium hydrogensulfite, be added dropwise acrylic acid/deionized water (3.2 parts of acrylic acid, 4.8 parts of deionized waters) and ammonium persulfate/ Deionized water (0.24 part of ammonium persulfate, 1.6 parts of deionized waters), after being added dropwise, continue to react 2h, cool to 40 DEG C, regulation PH value 7-8, obtain polycarboxylate based water reducer solution；Polycarboxylate based water reducer solution is placed in vacuum ultrasonic microwave drying oven In, solution deep 6cm, the vacuum in vavuum pump regulation drying box is opened to -0.09--0.08MPa；Ultrasonic wave frequency is set Rate is 30kHz, and the power of the supersonic generator is 100W, opens microwave generator, microwave frequency 2450MHz, sets Drying temperature is 55 DEG C, and adjusts range of microwave power to 200kW, dries 3h, obtains polycarboxylate based water reducer.
Redispersable latex powder：Redispersable latex powder described in the present embodiment is acrylic copolymer, specific preparation side Method is as follows：(1) by 100 parts of deionized waters, 1 part of NaHCO3, 1.5 parts of dodecyl Biphenyl Ether sodium sulfonate and 0.5 part of potassium peroxydisulfate Put into reactor, stir, when heating water bath is warming up to 80 DEG C, 15 parts of butyl acrylate is then slowly added dropwise, and together When make system temperature maintain 80 DEG C reaction a period of time.15min is incubated after dripping.Then start that residue 0.5 is slowly added dropwise Part potassium peroxydisulfate and 135 parts of butyl acrylates, after solution drips off, in 80 DEG C of insulation reaction 30min；
(2) 0.5 part of potassium peroxydisulfate, 1.5 parts of dodecyl Biphenyl Ether sodium sulfonates and 135 parts of styrene and 15 parts of 1- second are weighed Alkene -1- fluoro- 1,3,3- trimethoxy silanes are dissolved completely in 150 parts of deionized waters, are added drop-wise to the above-mentioned mixed liquor of step (1) In, control emulsion system reaction temperature is controlled and is added dropwise in 2h at 80 DEG C or so, is stopped heating after being incubated 1h, is cooled to After room temperature, filtering and discharging.
Cellulose ether：Cellulose ether described in the present embodiment is that cellulose ether is modified mesoporous silicon oxide；Specific reaction step It is rapid as follows：
(1) 1 parts by weight absorbent cotton is added into reactor, is melted in the 1- butyl -3- methylimidazole villaumites of 5 parts by weight In, in N2In 100 DEG C of stirring reaction 12h under gas shielded, the solution of clear viscous is obtained；60 DEG C are warming up to, adds 0.075 weight Part ammonium persulfate, stirs 0.5h, and the mass fraction that 2 parts by weight are added dropwise is 40% sodium acrylate solution, after being added dropwise, is added The benzoyl peroxide of 0.01 parts by weight, 3h is incubated, room temperature is cooled to, obtains copolymerized solution；Copolymerized solution is added into 10 weight In 80 DEG C of atoleines of part, 0.4 parts by weight butyl stearate is added, 1h is incubated, is cooled to room temperature, filters, uses deionization Water washing 3 times, then washed 3 times with acetone, 60 DEG C are dried under reduced pressure 12h, obtain cellulose；
(2) 0.1mol tetraethoxysilane, 0.05mol 2- cyanoethyls triethoxysilane and above-mentioned cellulose are matched somebody with somebody Mixed solution is set to, 0.03mol cetyl trimethylammonium bromides are added into ammoniacal liquor stirring 1-2h, add above-mentioned mixed solution In, still aging 2 days at 65 DEG C, reaction terminates that reaction solution is made, and filtering, adds absolute ethyl alcohol, continues to stir 1min, obtains fibre Plain improved silica is tieed up, the weight part ratio of the cellulose and silica is 3：1；
(3) by the cellulose modified silica in step (2), aqueous 10% N- methyl morpholine oxides solution and do not eat The percentage by weight of sub- propyl propionate is 10:70:0.5, three is well mixed, stirs, dissolve obtained cellulose solution；
(4) 20wt% NaOH solution is quantitatively added to cellulose solution made from step (3), and ensures alkali number and fiber Plain mol ratio is 4：1, control temperature reacts 60min at 100 DEG C, and the cellulose modified silica of alkalization is made；
(5) excessive bromomethane is added into step (4), control temperature reacts 60min, obtain cellulose at 60 DEG C Ether；
(6) cellulose ether that step (5) obtains is transferred in container, adds 75% ethanol water washing, simultaneously It is added dropwise in hydrochloric acid and excessive alkali is until neutrality, mixed liquor is separated by filtration, repeated washing filters 2-5 times；
(7) dry and crush：The filter cake that step (6) obtains is dried in drier, by grinding to obtain fiber Plain ether product.
Polyvinyl alcohol：In the present embodiment, the model polyvinyl alcohol 1788 of the polyvinyl alcohol.
Embodiment 2：Difference with embodiment 1 is that the preparing raw material of the additive comprises at least：90 parts of cement, 6 parts Silicon ash, 3 parts of water reducers, 5 parts of redispersable latex powders, 2 parts of cellulose ethers, 5 parts of calcium formates, 2 parts of polyvinyl alcohol, 2.5 parts of pigment.
Embodiment 3：Difference with embodiment 1 is that the preparing raw material of the additive comprises at least：80 parts of cement, 4 parts Silicon ash, 0.1 part of water reducer, 0.1 part of redispersable latex powder, 0.01 part of cellulose ether, 0.5 part of calcium formate, 0.01 part of polyethylene Alcohol, 0.3 part of pigment.
Embodiment 4：Difference with embodiment 1 is that the cement is portland cement, commercially available.
Embodiment 5：Difference with embodiment 1 is that the water reducer is MasterGlenium SKY 8326, buy in Shanghai MBT ＆ SCG High-Tech Construction Chemical Co., Ltd..
Embodiment 6：Difference with embodiment 1 is that the polymer dispersion powder is the type of redispersable latex powder 5010.
Embodiment 7：Difference with embodiment 1 is that the preparation method of the polymer dispersion powder is as follows：(1) by 100 parts Deionized water, 1 part of NaHCO3, 1.5 parts of dodecyl Biphenyl Ether sodium sulfonates and 0.5 part of potassium peroxydisulfate put into reactor, stir Mix, when heating water bath is warming up to 80 DEG C, 15 parts of butyl acrylate is then slowly added dropwise, and maintain system temperature simultaneously 80 DEG C of reaction a period of times.15min is incubated after dripping.Then start that remaining 0.5 part of potassium peroxydisulfate and 135 part third is slowly added dropwise Olefin(e) acid butyl ester, after solution drips off, in 80 DEG C of insulation reaction 30min；
(2) 0.5 part of potassium peroxydisulfate, 1.5 parts of dodecyl Biphenyl Ether sodium sulfonates and 135 parts of styrene are weighed to be dissolved completely in In 150 parts of deionized waters, it is added drop-wise in the above-mentioned mixed liquor of step (1), control emulsion system reaction temperature is at 80 DEG C or so, control System is added dropwise in 2h, stops heating, after being cooled to room temperature, filtering and discharging after being incubated 1h.
Embodiment 8：Difference with embodiment 1 is that the preparation method of the polymer dispersion powder is as follows：
(1) by 250 parts of deionized waters, 1 part of NaHCO3, 3 parts of dodecyl Biphenyl Ether sodium sulfonates and 1.5 parts of potassium peroxydisulfates throw Enter into reactor, stir, when heating water bath is warming up to 80 DEG C, 150 parts of butyl acrylates and 135 parts of benzene are then slowly added dropwise Ethene and 15 parts of 1- ethene -1- fluoro- 1, the mixed liquor of 3,3- trimethoxy silanes, and system temperature is maintained 80 DEG C instead simultaneously Should a period of time.After solution drips off, in 80 DEG C of insulation reaction 90min；
Embodiment 9：Difference with embodiment 1 is that the cellulose ether is hydroxypropyl methyl cellulose ether.
Embodiment 10：Difference with embodiment 1 is that the preparation method of the cellulose ether is as follows：(1) into reactor 1 parts by weight absorbent cotton is added, is melted in the 1- butyl -3- methylimidazole villaumites of 5 parts by weight, in N2In 100 DEG C under gas shielded Stirring reaction 12h, obtain the solution of clear viscous；60 DEG C are warming up to, adds 0.075 parts by weight ammonium persulfate, stirs 0.5h, drop The sodium acrylate solution that the mass fraction for adding 2 parts by weight is 40%, after being added dropwise, add the benzoyl peroxide first of 0.01 parts by weight Acyl, 3h is incubated, room temperature is cooled to, obtains copolymerized solution；Copolymerized solution is added in 80 DEG C of atoleines of 10 parts by weight, then added Enter 0.4 parts by weight butyl stearate, be incubated 1h, be cooled to room temperature, filter, be washed with deionized 3 times, then washed with acetone 3 times, 60 DEG C are dried under reduced pressure 12h, obtain cellulose；
(2) by the cellulose in step (1), aqueous 5-17% N- methyl morpholine oxides solution and propylgallate Percentage by weight is 10:70:0.5, three is well mixed, stirs, dissolve obtained cellulose solution；
(3) 20wt% NaOH solution is quantitatively added to cellulose solution made from step (2), and ensures alkali number and fiber Plain mol ratio is 4：1, control temperature reacts 60min at 100 DEG C, and the cellulose of alkalization is made；
(4) excessive bromomethane is added into step (3), control temperature reacts 60min, obtain cellulose at 60 DEG C Ether；
(5) cellulose ether that step (4) obtains is transferred in container, adds 75% ethanol water washing, simultaneously It is added dropwise in hydrochloric acid and excessive alkali is until neutrality, mixed liquor is separated by filtration, repeated washing filters 2-5 times；
(6) dry and crush：The filter cake that step (5) obtains is dried in drier, by grinding to obtain fiber Plain ether product.
Embodiment 11：Difference with embodiment 1 is that the preparation method of the cellulose ether is as follows：
(1) 0.1mol tetraethoxysilane, 0.05mol 2- cyanoethyls triethoxysilane and wood pulps are configured to Mixed solution, 0.03mol cetyl trimethylammonium bromides are added into ammoniacal liquor stirring 1-2h, added in above-mentioned mixed solution, 65 DEG C still aging 2 days, and reaction terminates that reaction solution is made, and filtering, adds absolute ethyl alcohol, continues to stir 1min, obtains cellulose Improved silica, the weight part ratio of the cellulose and silica is 3：1.
(2) by the cellulose modified silica in step (1), aqueous 10% N- methyl morpholine oxides solution and do not eat The percentage by weight of sub- propyl propionate is 10:70:0.5, three is well mixed, stirs, dissolve the fiber that 0.1%-30% is made Plain solution；
(3) 20wt% NaOH solution is quantitatively added to cellulose solution made from step (2), and ensures alkali number and fiber Plain mol ratio is 4：1, control temperature reacts 60min at 100 DEG C, and the cellulose modified silica of alkalization is made；
(4) excessive bromomethane is added into step (3), control temperature reacts 60min, obtain cellulose at 60 DEG C Ether；
(5) cellulose ether that step (4) obtains is transferred in container, adds 75% ethanol water washing, simultaneously It is added dropwise in hydrochloric acid and excessive alkali is until neutrality, mixed liquor is separated by filtration, repeated washing filters 2-5 times；
(6) dry and crush：The filter cake that step (5) obtains is dried in drier, by grinding to obtain fiber Plain ether product.
Comparative example 1：It is not added with the inorganic pervious concrete of inorganic pervious concrete additive of the present invention.
Test：
After the concrete of embodiment 1-11 addition and comparative example 1 is mixed, performance test is carried out.
With reference to JC/T985-2005《Ground cement-based self-leveling mortar》Relevant regulations, matched somebody with somebody using mortar shown in table 1 The properties of embodiment and comparative example in the composition and division in a proportion testing inspection present invention.
Concrete state judgment criteria：
It is good：Workability is good, stirs easily；
Difference：Workability is poor, and concrete glues, and stirs difficulty.
Frost resistance test result means D50 frost resistance index
The conventional index test result of table 1
Foregoing example is merely illustrative, some features of the feature for explaining the disclosure.Appended claim It is intended to require the scope as wide as possible being contemplated that, and embodiments as presented herein is only according to all possible embodiment Combination selection embodiment explanation.Therefore, the purpose of applicant is appended claim not by the explanation present invention Feature example selectional restriction.And the progress in science and technology will not formed due to the inaccuracy of language performance and not The possible equivalent or son being presently considered are replaced, and these changes should also be interpreted by appended in the conceived case Claim covers.

Claims (10)

1. a kind of additive of inorganic pervious concrete, it is characterised in that the preparing raw material of the additive comprises at least：Water Mud, silicon ash, water reducer, redispersable latex powder, cellulose ether, calcium formate, polyvinyl alcohol, pigment.
2. the additive of a kind of inorganic pervious concrete described in claim 1, it is characterised in that in parts by weight, described The preparing raw material of additive comprises at least：
3. the additive of a kind of inorganic pervious concrete described in claim 1, it is characterised in that in parts by weight, described The preparing raw material of additive comprises at least：
4. the additive of a kind of inorganic pervious concrete described in claim 1, it is characterised in that the cement is selected from silicate At least one in cement, aluminate cement, sulphate aluminium cement, ferrous aluminate cement, fluoroaluminate cement, phosphate cement Kind.
5. the additive of a kind of inorganic pervious concrete described in claim 1, it is characterised in that the water reducer is selected from wooden Plain Sulfonates water reducer, sulfamate based water reducer, fatty acid series water reducer, at least one in polycarboxylate based water reducer Kind.
6. the additive of a kind of inorganic pervious concrete described in claim 1, it is characterised in that the water reducer is polycarboxylic acids Salt based water reducer.
7. the additive of a kind of inorganic pervious concrete described in claim 1, it is characterised in that more than 80% in the silicon ash Silicon ash fineness be less than 1 μm.
A kind of 8. additive of inorganic pervious concrete described in claim 1, it is characterised in that the average grain diameter of the silicon ash At 0.1~0.3 μm.
A kind of 9. additive of inorganic pervious concrete described in claim 1, it is characterised in that the specific surface area of the silicon ash For 20~28m2/g。
10. a kind of inorganic pervious concrete, it is characterised in that the preparing raw material of the inorganic pervious concrete includes aforesaid right It is required that the additive of the inorganic pervious concrete described in any one of 1-9.
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CN108455944A (en) * 2018-04-20 2018-08-28 南京兴佑交通科技有限公司 A kind of colorful water-permeable concrete for exempting from maintenance
CN108455944B (en) * 2018-04-20 2019-03-15 南京兴佑交通科技有限公司 A kind of colorful water-permeable concrete for exempting from maintenance
CN110357485A (en) * 2019-06-21 2019-10-22 内蒙金属材料研究所 A kind of pervious concrete additive and preparation method thereof using the preparation of ferrosilicon ash
CN110407535A (en) * 2019-07-31 2019-11-05 武汉德毅环保新材料有限公司 A kind of porous pervious concrete and preparation method thereof
CN110590216A (en) * 2019-08-28 2019-12-20 中交第一公路勘察设计研究院有限公司 Permeable concrete liquid reinforcing agent and preparation method and use method thereof
CN112521111A (en) * 2019-09-17 2021-03-19 北京华泥新材料科技有限公司 Ultrafast hard concrete repair material and preparation method and use method thereof
CN112521111B (en) * 2019-09-17 2022-04-01 北京华泥新材料科技有限公司 Ultrafast hard concrete repair material and preparation method and use method thereof
CN110981315A (en) * 2019-12-27 2020-04-10 武汉永信美绿建新技术有限公司 High-performance aggregate adhesive and application thereof
CN113121162A (en) * 2019-12-31 2021-07-16 武汉惠帮地平工程有限公司 Waterproof and moistureproof terrace
CN111439984A (en) * 2020-03-03 2020-07-24 嵊州市路通水泥制品有限公司 Polymer concrete and manufacturing method and application thereof
CN111439984B (en) * 2020-03-03 2022-02-22 嵊州市路通水泥制品有限公司 Polymer concrete and manufacturing method and application thereof
CN112250340A (en) * 2020-06-29 2021-01-22 北京仁创科技集团有限公司 Modifier of inorganic adhesive, adhesive and application thereof
CN112456846A (en) * 2020-12-04 2021-03-09 湖南加美乐素新材料股份有限公司 Multifunctional composite additive
CN113800858A (en) * 2021-10-13 2021-12-17 广东彩居建筑工程有限公司 Binder for microporous ecological pavement and construction method thereof
CN116621605A (en) * 2023-03-23 2023-08-22 安徽皖维花山新材料有限责任公司 Powder concrete curing agent and preparation method thereof

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