CN108996970A

CN108996970A - A kind of ultra-fine earth concrete and preparation method thereof

Info

Publication number: CN108996970A
Application number: CN201811111049.9A
Authority: CN
Inventors: 李晓军; 李�昊; 翟雪强; 马嘉昕; 易浩; 吴燕利
Original assignee: Xi'an Xinxue Traffic Geological Engineering Co ltd; Xian University of Science and Technology
Current assignee: Xi'an Xinxue Traffic Geological Engineering Co ltd; Xian University of Science and Technology
Priority date: 2018-09-22
Filing date: 2018-09-22
Publication date: 2018-12-14

Abstract

The invention discloses a kind of ultra-fine earth concretes, are mainly formulated by soil, cement, flyash, silicon ash, concrete regenerant, iron content polypropylene fibre and water, and the soil is the ultra-fine soil for being ground to 90% or more partial size and being less than 1mm；The invention also discloses a kind of preparation methods of ultra-fine earth concrete, and raw material is stirred evenly with concrete regenerating agent solution after mixing, is then poured into mold, is successively plugged and pounded and vibrated, then stand health after demoulding.The present invention is exposed single mineral grain or granule in the soil body using grinding and participates in active reaction formation gelinite under the conditions of hydrated reaction of cement is exothermic; keep other ingredients in concrete cemented together securely; to substantially increase the tensile strength of concrete; the cost of material for reducing concrete simultaneously reduces the pollution to environment and destroys；Preparation method of the invention is simple, not high to equipment requirement, it is easy to accomplish, it is suitable for industrialized production.

Description

A kind of ultra-fine earth concrete and preparation method thereof

Technical field

The invention belongs to civil engineering material technical fields, and in particular to a kind of ultra-fine earth concrete and preparation method thereof.

Background technique

Concrete is a kind of essential construction material of engineering construction at present, is widely used and dosage is huge.It is common mixed Solidifying soil is mainly made of cement and building stones, and the production of cement not only needs to expend a large amount of electric energy, while will cause environment dirt Dye, such as haze.And the exploitation of building stones can not only expend a large amount of manpower and material resources, while it is more serious to massif destruction to quarry, Caused environmental disruption effect is more serious.

Application No. is 201510538352.7 patent of invention disclose a kind of superhigh intensity Reactive Powder Concrete and its Preparation method, application No. is 201710175668.3 patents of invention to disclose a kind of regeneration steel fibre ultra-high performance concrete and system Preparation Method, using quartz sand as the composition major ingredient of concrete, solid material group of the quartz sand in concrete in the two patents Accounting in point is maximum.The commercially available price of quartz sand is about 2000 yuan/ton at present, expensive, considerably increases concrete Cost of material；And the concrete sample of quartz sand production is used to need the health in vaporium that could obtain high-intensitive performance, The preparation cost of concrete is further increased, and is unfavorable for the extensive site operation of highway engineering；Quartz sand is produced simultaneously It needs to exploit a large amount of ore as raw material, has be easy to cause the destruction of environment.Bad, institute is generally pulled open in the destruction on existing road surface It is an important quality index for investigating concrete road surface, " highway cement concrete pavement design specification " with bending tensile strength Require the control of 28d flexural tensile strength standard value in 2.0MPa~2.5MPa base material in (JTG D40-2011).It is above-mentioned two Although the intensity of concrete in patent can satisfy road requirement, but its high cost of material and stringent health-preserving condition, Causing it not to be suitable for, this distribution area of highway is wide, and materials demand amount is big, it would be desirable to be able to the requirement of extensive site operation.Therefore Need it is a kind of be not only able to satisfy road requirement, but also cost of material can be reduced and raw material materials are convenient, reduce the novel of environmental disruption mixes Solidifying soil.

In addition, a large amount of fired brick brick fields are shut down, and ordinary fired brick is in short supply recently as the raising of environmental requirement, it is anxious A kind of substitution tile product that environment-friendly type can be high is needed, certain compression strength should be met, and can be reduced the pollution to environment.

Summary of the invention

Technical problem to be solved by the present invention lies in view of the above shortcomings of the prior art, providing, a kind of ultra-fine soil is mixed Solidifying soil.The concrete is made single in the soil body with being ground to soil of 90% or more the partial size less than 1mm as primary raw material using grinding Mineral grain or granule are exposed and have the granularity condition for participating in active reaction, and the cement in concrete material occurs Hydration reaction and it is exothermic under the conditions of, native Mineral Component occurs chemical reaction and forms gelinite, makes in concrete Other ingredients are cemented together securely, so that the tensile strength of concrete is substantially increased, due to the from a wealth of sources and nothing of soil Place of production limitation, substantially reduces the cost of material of concrete, reduces the pollution to environment and destroys.

In order to solve the above technical problems, the technical solution adopted by the present invention are as follows: a kind of ultra-fine earth concrete, feature exist In being made of the component of following mass fraction: 810~2290 parts of soil, 149~448 parts of cement, 82.6~332 parts of flyash, silicon 49.4~200 parts of ash, 40~100 parts of concrete regenerant, 0.1~200 part of iron content polypropylene fibre, quick lime mountain flour 0~148 Part, 0~100 part of iron powder, 318~827 parts of water；The soil is the ultra-fine soil for being ground to 90% or more partial size and being less than 1mm；It is described to contain Iron polypropylene fibre is dispersed in the polyacrylic polymer of melting by iron powder, is obtained by squeezing spinneret.

The present invention is to be ground to soil of 90% or more the partial size less than 1mm as the primary raw material of concrete component, due to soil The single mineral grain of the composition soil body or granule are exposed when partial size is less than 1mm after ground crushing, in native Mineral Component Quartz, feldspar, calcite and dolomite partial size mostly in 100um hereinafter, have the granularity condition for participating in active reaction, Hydration reaction occurs after the cement in concrete material is mixed with water and releases heat make heating inside hydration reaction system, The concrete regenerant in concrete material, which is wrapped up in, simultaneously is attached to around hydration reaction system, and the heat that hydration reaction is released is not easy It sheds and persistently increases, the chemical reaction of similar production cement occurs for the ingredient in soil and reaction product and water continue that aquation occurs Reaction forms gelinite, keeps other ingredients in concrete cemented together securely, to substantially increase the anti-of concrete Tensile strength due to from a wealth of sources, the materials convenience of soil, and limits without the place of production, substantially reduces the cost of material of concrete, save Manpower and material resources reduce pollution and destruction to environment；Iron content polypropylene fibre is uniform by iron powder in concrete component of the present invention It is dispersed in the polyacrylic polymer of melting, is obtained by squeezing spinneret, since the iron in iron content polypropylene fibre uniformly wraps up It in polyacrylic polymer, avoids and gets rusty, after concrete reaches service life, magnet can be used by iron content polypropylene fibre It is separated from broken concrete waste material, re-starts melted extrusion modeling and obtain new iron content polypropylene fibre, and Remaining concrete waste material, which can be re-used as, to be prepared the raw material of novel concrete and is recycled, and the production of construction waste is avoided It is raw, improve the service efficiency of concrete.

Above-mentioned a kind of ultra-fine earth concrete, which is characterized in that the soil is gravelly soil, in sand, silt, cohesive soil It is one or more kinds of.It selects common gravelly soil, sand, silt, cohesive soil as raw material, and two or more soil need to only be mixed Conjunction, no ratio requirement shorten classification and weigh technique, are conducive to the exploitation of soil, and above-mentioned native source distribution is extensive, native It takes conveniently.

Above-mentioned a kind of ultra-fine earth concrete, which is characterized in that be made of the component of following mass fraction: soil 810~ 2290 parts, 149~448 parts of cement, 82.6~332 parts of flyash, 49.4~200 parts of silicon ash, concrete regenerant 40~100 Part, 0.1~200 part of iron content polypropylene fibre, 5~148 parts of quick lime mountain flour, 3~100 parts of iron powder, 318~827 parts of water.Addition Quick lime mountain flour and iron powder help to improve the tensile strength of concrete.

Above-mentioned a kind of ultra-fine earth concrete, which is characterized in that the silicon ash is unformed spherical particle, SiO in silicon ash₂ Mass content be not less than 83%, SiO₂Specific surface area be not less than 15m²/g.Pass through SiO in limitation silicon ash₂Mass content and Specific surface area improves the reactivity of silicon ash, and uses the silicon ash of unformed spherical particle, is guaranteeing the same of its reactivity When, the hole being filled between inside concrete other materials particle improves the compactness of concrete, further improves mixed Coagulate the intensity of soil.

A kind of above-mentioned ultra-fine earth concrete, which is characterized in that the mass content of the iron in the iron content polypropylene fibre It is 0.1%~3%, the diameter of the iron content polypropylene fibre is 0.2mm~2.5mm, and length is 10mm~35mm, iron content poly- third The tensile strength of alkene fiber is greater than 400MPa.Iron content polypropylene fibre specification and tensile strength are limited within the above range, both The bonding capacity for improving other active materials in iron content polypropylene fibre and concrete, improves the tensile strength of concrete, Reduce the influence to mixing and stirring again, is conducive to the preparation of concrete.

Above-mentioned a kind of ultra-fine earth concrete, which is characterized in that the main component of the concrete regenerant is isoamyl two Alkenyl polyoxyethylene ether, hydrogen peroxide, vinyltriethoxysilane, sodium hydroxide, ferrous sulfate, acrylic acid, methallyl Base polyethylene glycol polymeric monomer, acrylic acid, ammonium persulfate, thioacetic acid, branching surface-active macromonomer and sodium hydrogensulfite.Concrete is again Raw agent promotes the evenly dispersed of the powder body materials such as native and cement, flyash, silicon ash in concrete component, avoids powder material Material condensation is agglomerating, forms the concrete mortar with certain viscosity and fluidity after adding water；The concrete regenerant has simultaneously Certain water-reduction, reduces the number of water in concrete component, to improve the compactness of concrete, reduces inside Distribution of pores, and then improve the intensity of concrete.

Above-mentioned a kind of ultra-fine earth concrete, which is characterized in that the flyash is I grade of flyash or II grade of flyash. The fineness of flyash is controlled by limiting flyash rank, it is ensured that flyash is sufficiently mixed uniformly and has with other powder body material Enough reactivities participate in the chemical reaction in concrete.

Above-mentioned a kind of ultra-fine earth concrete, which is characterized in that the partial size of the quick lime mountain flour is less than 100 μm；It is described Iron powder is the black particle that partial size is less than 150um.It is enough that partial size by limiting quick lime mountain flour ensures that quick lime mountain flour has Reactivity, participate in concrete in hydration reaction；Partial size by limiting iron powder ensures that iron powder is lived with enough reactions Property, it is easier to participate in the hydration reaction in concrete.

In addition, the present invention also provides a kind of preparation methods of ultra-fine earth concrete, which is characterized in that this method include with Lower step:

Step 1: soil is ground to the ultra-fine soil that 90% or more partial size is less than 1mm, then by ultra-fine soil, cement, fine coal It is stirred evenly after ash, silicon ash, agstone and iron powder mixing, then is uniformly added into iron content polypropylene fibre under stirring conditions, It stirs again, obtains mixture；

It is uniformly mixing to obtain mixed solution Step 2: concrete regenerant is added to the water, then adds mixed solution Enter and stirred into mixture obtained in step 1, obtains concrete slurry；

Step 3: concrete slurry obtained in step 2 is poured into mold, then successively plugged and pounded and vibrated, is passed through 18h~demould afterwards for 24 hours is stood after floating at room temperature, then carries out health.

Preparation process of the invention predominantly stirring, molding and health, are the conventional fabrication process of concrete, to equipment Without extra demand, it is easy to accomplish, it is suitable for large-scale industrial production.

Above-mentioned method, which is characterized in that the condition of health described in step 3 are as follows: in 85 DEG C~95 DEG C of steam condition Lower health is taken out after 3~5 days and is cooled down at room temperature, or takes out after health 5 days in room under 40 DEG C~60 DEG C of water bath condition Middle benefit gas is cooling, or concrete is sprayed water at room temperature moisture-keeping maintaining 5 days.Supporting in the preparation method of concrete of the present invention Raw process is in steam condition, water bath condition or under room temperature can be achieved, wherein water bath condition or health under room temperature Initial heat of the heat released by hydrated reaction of cement as the chemical reaction between active component in concrete, and steam Under the conditions of chemical reaction of the health between active component in concrete provide initial heat, and put with hydrated reaction of cement Heat out collectively promotes the lasting progress of the chemical reaction between active component, further promotes filling for active component reaction Divide degree, shorten the time of reaction, the intensity for the concrete that three kinds of health-preserving conditions are prepared can meet road use and brickmaking Requirement.

The iron content polypropylene fibre in the present invention can be adsorbed by magnet.

Compared with the prior art, the present invention has the following advantages:

1, the present invention is less than the soil of 1mm as the primary raw material of concrete component, due to the master of soil using 90% or more partial size Want mineralogical composition for 40%~70% quartz of mass percent, 20%~40% silicate and 5%~10% carbonate, it is quartzy Main chemical compositions are SiO₂, main group of silicate is as feldspar, main chemical compositions SiO₂、Al₂O₃、K₂O、Fe₂O₃、 Na₂Main group of O and CaO, carbonate becomes calcite and dolomite, wherein the main chemical compositions CaCO of calcite₃In contain 56% or so CaO, in dolomite containing 30% or so CaO, when partial size is less than 1mm after the ground crushing of soil, block-like soil Pulverized, the single mineral grain or granule for forming the soil body are exposed, the quartz, feldspar, calcite and dolomite in soil Partial size mostly in 100um hereinafter, have the granularity condition for participating in active reaction, ingredient and partial size with the chemistry of cement slurry Ingredient is consistent with partial size, and after the cement in concrete material is mixed with water, water occurs for various chemical components and water in cement Change reaction, generates the chemical combination such as hydrated calcium silicate, hydrated calcium ferrite gel, calcium hydroxide, drated calcium aluminate and hydrated calcium aluminate sulfate Object, and release heat and the temperature inside hydration reaction system is made to reach 300 DEG C or so, further promote local hydration reaction Progress, while the concrete regenerant in concrete material is wrapped up in and is attached to around hydration reaction system, what hydration reaction was released Heat is not easy to shed, and the constant temperature in hydration reaction system increases, chemical component master under conditions of continuous high temperature, in soil The chemical reaction of following similar production cement: CaCO occurs₃=CaO+CO₂, SiO₂+ CaO=CaSiO₃, SiO₂+Na₂CO₃= Na₂SiO₃+CO₂, reaction product and water continues hydration reaction occurs to form gelinite, makes other ingredients in concrete securely It is cemented together, so that the tensile strength of concrete is substantially increased, due to from a wealth of sources, the materials convenience of soil, and without the place of production Limitation, substantially reduces the cost of material of concrete, saves manpower and material resources, reduce pollution and destruction to environment.

2, the present invention using iron content polypropylene fibre as concrete component, and by iron content polypropylene fibre specification and tension Intensity is limited in a certain range, has both improved the bonding capacity of other active materials in iron content polypropylene fibre and concrete, The tensile strength of concrete is improved, and reduces the influence to mixing and stirring, is conducive to the preparation of concrete；In addition, due to iron content Iron in polypropylene fibre is uniformly wrapped in polypropylene, is avoided and is got rusty, and after concrete reaches service life, magnetic can be used Iron separates iron content polypropylene fibre from broken concrete waste material, re-start melted extrusion modeling obtain it is new Iron content polypropylene fibre, remaining concrete waste material, which can be re-used as, to be prepared the raw material of novel concrete and is recycled, and is avoided The generation of construction waste, improves the service efficiency of concrete.

3, the main component of silicon ash is SiO in concrete component of the present invention₂, part little particle is rapid after silicon ash is mixed with water Dissolution, and the hydrated reaction product Ca (OH) with cement₂Reaction generates C-S-H gel, is filled in the pore structure of concrete, Improve the intensity and durability of concrete；The main component of flyash is SiO in concrete component₂And Al₂O₃, silicon ash and powder Coal ash simultaneously is easy when depositing to generate mullite phase, improves the elevated temperature strength of concrete, so with hydrated reaction product Ca (OH)₂Hair Raw secondary reaction of hydration forms gelled product, and is filled in the pore structure of concrete, improves the microstructure of concrete simultaneously Improve the mechanical property and durability of concrete；In addition, significantly improving concrete since silicon ash is prepattern spheric granules Rheological property, and the soil in concrete component grind after no longer show the bones of quartz particles in prior art concrete Frame effect, but serve as the active component of concrete together with cement, silicon ash, flyash, in the exothermic induction item of hydration reaction It reacts under part, exothermic heat of reaction continues to promote the progress of the reaction, ultimately forms the gelinite of compact structure, further increases The tensile strength of concrete.

4, the iron content polypropylene fibre in concrete material component of the present invention is dispersed in concrete, and by concrete The gelinite tight that internal chemical reaction generates, enhances the active force between gelinite, further improves concrete Tensile strength；And the main component of agstone is CaO, exothermic reaction can be occurred and generate Ca (OH) by meeting water₂Participate in silicon ash Secondary reaction of hydration, iron powder, which meets water, can also occur exothermic reaction, and both as the inducer of spontaneous heating, the heat of releasing is induced And promote reaction between soil, silicon ash, flyash and cement isoreactivity component, accelerate the growth rate of concrete strength, and promote The abundant degree reacted into active component, improves the compactness extent of gelinite, and another step improves the tensile strength of concrete；Separately Outside, agstone has certain lubricity, has helped to improve the rheological property of concrete.

5, the soil in concrete component of the invention be one or both of gravelly soil, sand, silt, cohesive soil with On, and to it is two or more soil only need to mix, no ratio requirement, it is above-mentioned soil source distribution it is extensive, take conveniently, can scene apply Work, and directly smashed and ground by crusher or cutter etc. to required size grading after drawing materials, treatment process is simple, further Reduce the cost of material of concrete.

6, concrete regenerant of the invention promotes the powders such as soil and cement, flyash, silicon ash in concrete component Material it is evenly dispersed, it is agglomerating to avoid powder body material condensation, adds the concrete for being formed after water and having certain viscosity and fluidity Slurry；The concrete regenerant has certain water-reduction simultaneously, reduces the number of water in concrete component, to improve The compactness of concrete reduces internal void distribution, and then improves the intensity of concrete.

7, ultra-fine earth concrete of the invention reduces the usage amount of cement, builds to reduce using soil as primary raw material The exploitation for building building stones further reduced cost of material, and also reduce the destruction to massif environment, reduce cement preparation Energy consumption and carbon emission amount in the process, it is environmentally protective.

8, the health process in the preparation method of concrete of the present invention steam condition, water bath condition or under room temperature It can be achieved, wherein the heat that water bath condition or health under room temperature are released by hydrated reaction of cement is as in concrete The initial heat of chemical reaction between active component, and the health under steam condition is the change in concrete between active component It learns reaction and provides initial heat, and the heat released with hydrated reaction of cement collectively promotes the chemical reaction between active component Lasting progress, further promote active component reaction abundant degree, shorten the time of reaction, three kinds of health-preserving condition systems The intensity of standby obtained concrete can meet the requirement of ultra-fine earth concrete.

9, the concrete that the present invention is prepared is had excellent performance, and 7 days compression strength is not less than 22MPa, 7 days anti-foldings Intensity is not less than 4.31MPa, meets the requirement of JTG D40-2011 " highway cement concrete pavement design specification "；Using The concrete that the present invention is prepared prepares concrete brick, and " GB5101-2003 sintering is general for the tensile strength satisfaction of the concrete brick Logical brick " and two blind headers overlapping in " GBT2542-2012 Test methods for wall bricks " rule of the compression strength greater than 10MPa It is fixed, alternative existing fired brick.

10, for the service life for the concrete that the present invention is prepared up to 20 years, the concrete after reaching service life could Again it is crushed and isolates iron content polypropylene fibre, required size grading is then ground to, due to its main chemical component base This is constant, therefore still can be used as the raw material components of concrete, prepares concrete progress after the raw materials such as cement, flyash, silicon ash are added It is recycled, avoids the generation of construction waste, improve the service efficiency of concrete.

11, preparation method of the invention is simple, not high to equipment requirement, it is easy to accomplish, it is suitable for large-scale industrial production.

Below by drawings and examples, the present invention is described in further detail.

Detailed description of the invention

Fig. 1 is the micro-structure diagram of loess in 1~embodiment of the embodiment of the present invention 8.

Fig. 2 is the microcosmic mineral structure characteristic pattern of loess in 1~embodiment of the embodiment of the present invention 8.

Fig. 3 is the microstructure characteristic figure for the concrete being prepared in the embodiment of the present invention 8.

Fig. 4 is the microstructure characteristic figure for the concrete being prepared in the embodiment of the present invention 9.

Specific embodiment

Embodiment 1

The ultra-fine earth concrete of the present embodiment is made of the component of following mass fraction: 1500 parts of loess, 42.5 ordinary silicons 400 parts of acid salt cement, I grade 310 parts of flyash, 195 parts of silicon ash, 66 parts of concrete regenerant, 100 parts of iron content polypropylene fibre, 463 parts of water；The loess is the ultra-fine soil for being ground to 90% or more partial size and being less than 1mm, and the silicon ash is unformed spherical particle, SiO in silicon ash₂Mass content be not less than 83%, SiO₂Specific surface area be not less than 15m²/g；The master of the concrete regenerant Wanting ingredient is prenyl polyoxyethylene ether, hydrogen peroxide, vinyltriethoxysilane, sodium hydroxide, ferrous sulfate, third Olefin(e) acid, methylallyl polyethylene glycol polymeric monomer, acrylic acid, ammonium persulfate, thioacetic acid, branching surface-active macromonomer and sulfurous acid Hydrogen sodium；The iron content polypropylene fibre is dispersed in the polyacrylic polymer of melting by iron powder, is obtained by squeezing spinneret, The mass content of iron in the iron content polypropylene fibre is 0.1%, the diameter of the iron content polypropylene fibre be 0.2mm~ 0.6mm, length are 10mm~35mm, and the tensile strength of iron content polypropylene fibre is greater than 400MPa.

The preparation method of the ultra-fine earth concrete of the present embodiment the following steps are included:

Step 1: loess is ground to the ultra-fine soil that 90% or more partial size is less than 1mm, then by 1500 parts of loess, 400 parts It is stirred evenly after 42.5 ordinary portland cements, 310 parts of I grade of flyash and 195 parts of silicon ash mixing, then under stirring conditions 100 parts of iron content polypropylene fibres of even addition, then stir, obtain mixture；

It is uniformly mixing to obtain mixed solution Step 2: 66 parts of concrete regenerants are added in 463 parts of water, then will be mixed Conjunction solution, which is added in mixture obtained in step 1, to be stirred, and concrete slurry is obtained；

Step 3: concrete slurry obtained in step 2 is poured into mold, then successively plugged and pounded and vibrated, is passed through It stands after floating and demoulds afterwards for 24 hours at room temperature, then carry out health；The condition of the health are as follows: moisturizing of spraying water at room temperature Maintenance is taken out after 5 days and is cooled down at room temperature.

Embodiment 2

The ultra-fine earth concrete of the present embodiment is made of the component of following mass fraction: 1300 parts of loess, 42.5 ordinary silicons 243 parts of acid salt cement, I grade 200 parts of flyash, 147 parts of silicon ash, 80 parts of concrete regenerant, 80 parts of iron content polypropylene fibre, water 318 parts；The loess is the ultra-fine soil for being ground to 90% or more partial size and being less than 1mm；The silicon ash is unformed spherical particle, silicon SiO in ash₂Mass content be not less than 83%, SiO₂Specific surface area be not less than 15m²/g；The concrete regenerant it is main Ingredient is prenyl polyoxyethylene ether, hydrogen peroxide, vinyltriethoxysilane, sodium hydroxide, ferrous sulfate, propylene Acid, methylallyl polyethylene glycol polymeric monomer, acrylic acid, ammonium persulfate, thioacetic acid, branching surface-active macromonomer and bisulfite Sodium；The iron content polypropylene fibre is dispersed in the polyacrylic polymer of melting by iron powder, is obtained by squeezing spinneret, institute The mass content for stating the iron in iron content polypropylene fibre is 0.7%, and the diameter of the iron content polypropylene fibre is 0.2mm~1mm, Length is 10mm~35mm, and the tensile strength of iron content polypropylene fibre is greater than 400MPa.

Step 1: loess is ground to the ultra-fine soil that 90% or more partial size is less than 1mm, then by 1300 parts of ultra-fine soil, 243 It is stirred evenly after 42.5 ordinary portland cements of part, 200 parts of I grade of flyash and 147 parts of silicon ashes mixing, then in the condition of stirring Under be uniformly added into 80 parts of iron content polypropylene fibres, then stir, obtain mixture；

It is uniformly mixing to obtain mixed solution Step 2: 80 parts of concrete regenerants are added in 318 parts of water, then will be mixed Conjunction solution, which is added in mixture obtained in step 1, to be stirred, and concrete slurry is obtained；

Embodiment 3

The ultra-fine earth concrete of the present embodiment is made of the component of following mass fraction: 1500 parts of loess, 42.5 ordinary silicons 380 parts of acid salt cement, I grade 230 parts of flyash, 180 parts of silicon ash, 62 parts of concrete regenerant, 100 parts of iron content polypropylene fibre, 498 parts of water；The loess is the ultra-fine soil for being ground to 90% or more partial size and being less than 1mm；The silicon ash is unformed spherical particle, SiO in silicon ash₂Mass content be not less than 83%, SiO₂Specific surface area be not less than 15m²/g；The master of the concrete regenerant Wanting ingredient is prenyl polyoxyethylene ether, hydrogen peroxide, vinyltriethoxysilane, sodium hydroxide, ferrous sulfate, third Olefin(e) acid, methylallyl polyethylene glycol polymeric monomer, acrylic acid, ammonium persulfate, thioacetic acid, branching surface-active macromonomer and sulfurous acid Hydrogen sodium；The iron content polypropylene fibre is dispersed in the polyacrylic polymer of melting by iron powder, is obtained by squeezing spinneret, The mass content of iron in the iron content polypropylene fibre is 0.7%, the diameter of the iron content polypropylene fibre be 0.2mm~ 0.5mm, length are 12mm~17mm, and the tensile strength of iron content polypropylene fibre is greater than 400MPa.

Step 1: loess is ground to the ultra-fine soil that 90% or more partial size is less than 1mm, then by 1500 parts of ultra-fine soil, 380 It is stirred evenly after 42.5 ordinary portland cements of part, 230 parts of I grade of flyash and 180 parts of silicon ashes mixing, then under stirring conditions 100 parts of iron content polypropylene fibres are uniformly added into, stirs, obtains mixture；

It is uniformly mixing to obtain mixed solution Step 2: 62 parts of concrete regenerants are added in 498 parts of water, then will be mixed Conjunction solution, which is added in mixture obtained in step 1, to be stirred, and concrete slurry is obtained；

Step 3: concrete slurry obtained in step 2 is poured into mold, then successively plugged and pounded and vibrated, is passed through It stands after floating and demoulds afterwards for 24 hours at room temperature, then carry out health；The condition of the health are as follows: in 40 DEG C~60 DEG C of water-bath item Health is taken out after 5 days and is cooled down at room temperature under part.

Embodiment 4

The ultra-fine earth concrete of the present embodiment is made of the component of following mass fraction: 1500 parts of loess, 42.5 ordinary silicons 400 parts of acid salt cement, I grade 300 parts of flyash, 200 parts of silicon ash, 62 parts of concrete regenerant, 0.1 part of iron content polypropylene fibre, 483 parts of water；The loess is the ultra-fine soil for being ground to 90% or more partial size and being less than 1mm；The silicon ash is unformed spherical particle, SiO in silicon ash₂Mass content be not less than 83%, SiO₂Specific surface area be not less than 15m²/g；The master of the concrete regenerant Wanting ingredient is prenyl polyoxyethylene ether, hydrogen peroxide, vinyltriethoxysilane, sodium hydroxide, ferrous sulfate, third Olefin(e) acid, methylallyl polyethylene glycol polymeric monomer, acrylic acid, ammonium persulfate, thioacetic acid, branching surface-active macromonomer and sulfurous acid Hydrogen sodium；The iron content polypropylene fibre is dispersed in the polyacrylic polymer of melting by iron powder, is obtained by squeezing spinneret, The mass content of iron in the iron content polypropylene fibre is 0.7%, the diameter of the iron content polypropylene fibre be 0.2mm~ 0.5mm, length are 12mm~17mm, and the tensile strength of iron content polypropylene fibre is greater than 400MPa.

Step 1: loess is ground to the ultra-fine soil that 90% or more partial size is less than 1mm, then by 1500 parts of ultra-fine soil, 400 It is stirred evenly after 42.5 ordinary portland cements of part, 300 parts of I grade of flyash and 200 parts of silicon ashes mixing, then under stirring conditions It is uniformly added into 0.1 part of iron content polypropylene fibre, stirs, obtains mixture；

It is uniformly mixing to obtain mixed solution Step 2: 62 parts of concrete regenerants are added in 483 parts of water, then will be mixed Conjunction solution, which is added in mixture obtained in step 1, to be stirred, and concrete slurry is obtained；

Step 3: concrete slurry obtained in step 2 is poured into mold, then successively plugged and pounded and vibrated, is passed through It stands after floating and demoulds afterwards for 24 hours at room temperature, then carry out health；The condition of the health are as follows: in 85 DEG C~95 DEG C of steam item Health is taken out after 5 days and is cooled down at room temperature under part.

Embodiment 5

The ultra-fine earth concrete of the present embodiment is made of the component of following mass fraction: 2290 parts of loess, 42.5 ordinary silicons 273 parts of acid salt cement, I grade 82.6 parts of flyash, 195 parts of silicon ash, 100 parts of concrete regenerant, iron content polypropylene fibre 100 Part, 600 parts of water；The loess is the ultra-fine soil for being ground to 90% or more partial size and being less than 1mm；The silicon ash is unformed spherical , SiO in silicon ash₂Mass content be not less than 83%, SiO₂Specific surface area be not less than 15m²/g；The concrete regenerant Main component be that prenyl polyoxyethylene ether, hydrogen peroxide, vinyltriethoxysilane, sodium hydroxide, sulfuric acid are sub- Iron, acrylic acid, methylallyl polyethylene glycol polymeric monomer, acrylic acid, ammonium persulfate, thioacetic acid, branching surface-active macromonomer and Sodium hydrogensulfite；The iron content polypropylene fibre is dispersed in the polyacrylic polymer of melting by iron powder, is sprayed by squeezing Silk obtains, and the mass content of the iron in the iron content polypropylene fibre is 0.7%, and the diameter of the iron content polypropylene fibre is 0.2mm~0.6mm, length are 12mm~17mm, and the tensile strength of iron content polypropylene fibre is greater than 400MPa.

Step 1: loess is ground to the ultra-fine soil that 90% or more partial size is less than 1mm, then by 2290 parts of ultra-fine soil, 273 It is stirred evenly after 42.5 ordinary portland cements of part, 82.6 parts of I grade of flyash and 195 parts of silicon ashes mixing, then in the item of stirring It is uniformly added into 100 parts of iron content polypropylene fibres under part, then stirs, obtains mixture；

It is uniformly mixing to obtain mixed solution Step 2: 100 parts of concrete regenerants are added in 600 parts of water, then will Mixed solution is added in mixture obtained in step 1 and stirs, and obtains concrete slurry；

Embodiment 6

The ultra-fine earth concrete of the present embodiment is made of the component of following mass fraction: 1800 parts of loess, 32.5 ordinary silicons 149 parts of acid salt cement, I grade 332 parts of flyash, 200 parts of silicon ash, 40 parts of concrete regenerant, 100 parts of iron content polypropylene fibre, 827 parts of water；The loess is the ultra-fine soil for being ground to 90% or more partial size and being less than 1mm；The silicon ash is unformed spherical particle, SiO in silicon ash₂Mass content be not less than 83%, SiO₂Specific surface area be not less than 15m²/g；The master of the concrete regenerant Wanting ingredient is prenyl polyoxyethylene ether, hydrogen peroxide, vinyltriethoxysilane, sodium hydroxide, ferrous sulfate, third Olefin(e) acid, methylallyl polyethylene glycol polymeric monomer, acrylic acid, ammonium persulfate, thioacetic acid, branching surface-active macromonomer and sulfurous acid Hydrogen sodium；The iron content polypropylene fibre is dispersed in the polyacrylic polymer of melting by iron powder, is obtained by squeezing spinneret, The mass content of iron in the iron content polypropylene fibre is 0.7%, the diameter of the iron content polypropylene fibre be 0.6mm~ 1.5mm, length are 12mm~17mm, and the tensile strength of iron content polypropylene fibre is greater than 400MPa.

Step 1: loess is ground to the ultra-fine soil that 90% or more partial size is less than 1mm, then by 1800 parts of ultra-fine soil, 149 It is stirred evenly after 32.5 ordinary portland cements of part, 332 parts of I grade of flyash and 200 parts of silicon ashes mixing, then under stirring conditions 100 parts of iron content polypropylene fibres are uniformly added into, stirs, obtains mixture；

It is uniformly mixing to obtain mixed solution Step 2: 40 parts of concrete regenerants are added in 827 parts of water, then will be mixed Conjunction solution, which is added in mixture obtained in step 1, to be stirred, and concrete slurry is obtained；

Step 3: concrete slurry obtained in step 2 is poured into mold, then successively plugged and pounded and vibrated, is passed through It is demoulded after standing 18h at room temperature after floating, then carries out health；The condition of the health are as follows: in 85 DEG C~95 DEG C of steam item Health is taken out after 5 days and is cooled down at room temperature under part.

Embodiment 7

The ultra-fine earth concrete of the present embodiment is made of the component of following mass fraction: 1500 parts of loess, 52.5 ordinary silicons 400 parts of acid salt cement, I grade 310 parts of flyash, 195 parts of silicon ash, 50 parts of quick lime mountain flour, 10 parts of iron powder, concrete regenerant 66 Part, 100 parts of iron content polypropylene fibre, 463 parts of water；The loess is the ultra-fine soil for being ground to 90% or more partial size and being less than 1mm；Institute Stating silicon ash is unformed spherical particle, SiO in silicon ash₂Mass content be not less than 83%, SiO₂Specific surface area be not less than 15m²/g；The main component of the concrete regenerant is prenyl polyoxyethylene ether, hydrogen peroxide, three ethoxy of vinyl Base silane, sodium hydroxide, ferrous sulfate, acrylic acid, methylallyl polyethylene glycol polymeric monomer, acrylic acid, ammonium persulfate, sulfydryl Acetic acid, branching surface-active macromonomer and sodium hydrogensulfite；The partial size of the quick lime mountain flour is less than 100 μm；The iron powder is partial size Black particle less than 150um；The iron content polypropylene fibre is dispersed in the polyacrylic polymer of melting by iron powder, is led to Extruding spinneret is crossed to obtain, the mass content of the iron in the iron content polypropylene fibre is 3%, the iron content polypropylene fibre it is straight Diameter is 0.2mm~0.6mm, and length is 12mm~35mm, and the tensile strength of iron content polypropylene fibre is greater than 400MPa.

Step 1: loess is ground to the ultra-fine soil that 90% or more partial size is less than 1mm, then by 1500 parts of ultra-fine soil, 400 After 42.5 ordinary portland cements of part, 310 parts of I grade of flyash, 195 parts of silicon ashes, 50 parts of quick lime mountain flours and 10 parts of iron powders mixing It stirs evenly, then is uniformly added into 100 parts of iron content polypropylene fibres under stirring conditions, stir, obtain mixture；

Step 3: concrete slurry obtained in step 2 is poured into mold, then successively plugged and pounded and vibrated, is passed through It is demoulded after standing 20h at room temperature after floating, then carries out health；The condition of the health are as follows: in 85 DEG C~95 DEG C of steam item Health is taken out after 5 days and is cooled down at room temperature under part.

Embodiment 8

The ultra-fine earth concrete of the present embodiment is made of the component of following mass fraction: 1000 parts of loess, 42.5 ordinary silicons 448 parts of acid salt cement, I grade 82.6 parts of flyash, 49.4 parts of silicon ash, 49 parts of concrete regenerant, 5 parts of quick lime mountain flour, iron powder 3 Part, 100 parts of iron content polypropylene fibre, 318 parts of water；The loess is the ultra-fine soil for being ground to 90% or more partial size and being less than 1mm；Institute Stating silicon ash is unformed spherical particle, SiO in silicon ash₂Mass content be not less than 83%, SiO₂Specific surface area be not less than 15m²/g；The main component of the concrete regenerant is prenyl polyoxyethylene ether, hydrogen peroxide, three ethoxy of vinyl Base silane, sodium hydroxide, ferrous sulfate, acrylic acid, methylallyl polyethylene glycol polymeric monomer, acrylic acid, ammonium persulfate, sulfydryl Acetic acid, branching surface-active macromonomer and sodium hydrogensulfite；The iron content polypropylene fibre is dispersed in poly- the third of melting by iron powder It in alkene polymer, is obtained by squeezing spinneret, the mass content of the iron in the iron content polypropylene fibre is 0.7%, described to contain The diameter of iron polypropylene fibre is 0.2mm~0.3mm, and length is 12mm~35mm, and the tensile strength of iron content polypropylene fibre is big In 400MPa.

Step 1: loess is ground to the ultra-fine soil that 90% or more partial size is less than 1mm, then by 1000 parts of ultra-fine soil, 448 After 42.5 ordinary portland cements of part, 82.6 parts of I grade of flyash, 5 parts of quick lime mountain flours, 3 parts of iron powders and 49.4 parts of silicon ashes mixing It stirs evenly, is then uniformly added into 100 parts of iron content polypropylene fibres under stirring conditions, then stir, is mixed Close object；

It is uniformly mixing to obtain mixed solution Step 2: 49 portions of solidifying native regenerative agents are added in 318 parts of water, it then will mixing Solution is added in mixture obtained in step 1 and stirs, and obtains concrete slurry；

Fig. 1 is the micro-structure diagram of loess in 1~embodiment of the embodiment of the present invention 8, it will be seen from figure 1 that loess is micro- The partial size for seeing individual particle in structure is respectively less than 100 μm, and the partial size of most of individual particle is respectively less than 50 μm, but individual particle It is condensed into biggish crumb structure, does not have the granularity condition for participating in active reaction, active reaction can not be participated in.

Fig. 2 is the microcosmic mineral structure characteristic pattern of loess in 1~embodiment of the embodiment of the present invention 8, figure it is seen that Quartzy content is most in the main mineral constituent of loess, followed by silicate mineral (mainly feldspar) and carbonate mineral (mainly calcite and dolomite), quartzy main chemical compositions are SiO₂, the main chemical compositions of feldspar are SiO₂、 Al₂O₃、K₂O、Fe₂O₃、Na₂O and CaO, the main chemical compositions CaCO of calcite₃In containing 56% or so CaO, in dolomite Contain 30% or so CaO.

Fig. 3 is the microstructure characteristic figure for the concrete that the present embodiment is prepared, from figure 3, it can be seen that the present embodiment The microstructure even compact for the concrete being prepared, there is C-S-H gelinites in structure.

Fig. 2 and Fig. 3, which are compared, can be seen that using loess of the partial size less than 1mm for being ground to 90% as raw material, and water is added The cementitious materials such as mud, flyash, silicon ash prepare concrete, and the small mineral grain in loess serves as activity together with cementitious material Ingredient carries out reaction and forms fine and close hydrated calcium silicate C-S-H gelinite, to obtain high-intensitive concrete, illustrates that loess passes through After grinding, block-like loess is pulverized, and the single mineral grain or granule for forming the soil body are exposed, quartz, length in loess The partial size of stone, calcite and dolomite mostly in 100um hereinafter, have participate in active reaction granularity condition, can participate in work Property reaction, effectively increase the intensity of concrete.

Embodiment 9

The ultra-fine earth concrete of the present embodiment is made of the component of following mass fraction: 1600 parts of red clay, 42.5 is common 330 parts of portland cement, I grade 280 parts of flyash, 200 parts of silicon ash, 68 parts of concrete regenerant, 80 parts of iron content polypropylene fibre, 483 parts of water；The red clay is the ultra-fine soil for being ground to 90% or more partial size and being less than 1mm；The silicon ash is unformed spherical , SiO in silicon ash₂Mass content be not less than 83%, SiO₂Specific surface area be not less than 15m²/g；The concrete regenerant Main component be that prenyl polyoxyethylene ether, hydrogen peroxide, vinyltriethoxysilane, sodium hydroxide, sulfuric acid are sub- Iron, acrylic acid, methylallyl polyethylene glycol polymeric monomer, acrylic acid, ammonium persulfate, thioacetic acid, branching surface-active macromonomer and Sodium hydrogensulfite；The iron content polypropylene fibre is dispersed in the polyacrylic polymer of melting by iron powder, is sprayed by squeezing Silk obtains, and the mass content of the iron in the iron content polypropylene fibre is 0.7%, and the diameter of the iron content polypropylene fibre is 0.6mm~2.5mm, length are 12mm~35mm, and the tensile strength of iron content polypropylene fibre is greater than 400MPa.

Step 1: by red clay be ground to 90% or more partial size be less than 1mm ultra-fine soil, then by 1600 parts it is ultra-fine soil, It is stirred evenly after 330 part of 42.5 ordinary portland cement, 280 parts of I grade of flyash and 200 parts of silicon ash mixing, then in stirring Under the conditions of be uniformly added into 80 parts of iron content polypropylene fibres, then stir, obtain mixture；

It is uniformly mixing to obtain mixed solution Step 2: 68 parts of concrete regenerants are added in 483 parts of water, then will be mixed Conjunction solution, which is added in mixture obtained in step 1, to be stirred, and concrete slurry is obtained；

Fig. 4 is the microstructure characteristic figure for the concrete that the present embodiment is prepared, from fig. 4, it can be seen that the present embodiment The microstructure even compact for the concrete being prepared, it is red glutinous less than 1mm to be ground to 90% partial size to illustrate the present invention Soil is raw material, and the cementitious materials such as cement, flyash, silicon ash are added and prepare concrete, the small mineral grain in red clay participates in Active reaction forms fine and close structure, to improve the intensity of concrete, and SiO₂With Al₂O₃And it is easy to generate when depositing and not come Shi Xiang, further improves the intensity of concrete, and with hydrated reaction product Ca (OH)₂Secondary reaction of hydration occurs and forms aquation Calcium silicates C-S-H gelinite, is filled in the pore structure of concrete, improves the microstructure of concrete and improves concrete Mechanical property and durability.

Embodiment 10

The ultra-fine earth concrete of the present embodiment is made of the component of following mass fraction: 1600 parts of sand, 42.5 ordinary silicons 300 parts of acid salt cement, I grade 332 parts of flyash, 150 parts of silicon ash, 63 parts of concrete regenerant, 80 parts of iron content polypropylene fibre, water 481 parts；The sand be ground to 95% partial size be less than 1mm；The silicon ash is unformed spherical particle, SiO in silicon ash₂'s Mass content is not less than 83%, SiO₂Specific surface area be not less than 15m²/g；The main component of the concrete regenerant is isoamyl Dialkylene polyoxyethylene ether, hydrogen peroxide, vinyltriethoxysilane, sodium hydroxide, ferrous sulfate, acrylic acid, first are for alkene Propyl polyethylene glycol polymeric monomer, acrylic acid, ammonium persulfate, thioacetic acid, branching surface-active macromonomer and sodium hydrogensulfite；It is described to contain Iron polypropylene fibre is dispersed in the polyacrylic polymer of melting by iron powder, is obtained by squeezing spinneret, the iron content is poly- The mass content of iron in tacryl is 0.7%, and the diameter of the iron content polypropylene fibre is 0.2mm~0.3mm, and length is The tensile strength of 19mm~25mm, iron content polypropylene fibre are greater than 400MPa.

Step 1: sand is ground to the ultra-fine soil that 90% or more partial size is less than 1mm, then by 1600 parts of ultra-fine soil, 300 It is stirred evenly after 42.5 ordinary portland cements of part, 332 parts of I grade of flyash and 150 parts of silicon ashes mixing, then in the condition of stirring Under be uniformly added into 80 parts of iron content polypropylene fibres, then stir, obtain mixture；

It is uniformly mixing to obtain mixed solution Step 2: 63 parts of concrete regenerants are added in 481 parts of water, then will be mixed Conjunction solution, which is added in mixture obtained in step 1, to be stirred, and concrete slurry is obtained；

Embodiment 11

The ultra-fine earth concrete of the present embodiment is made of the component of following mass fraction: 810 parts of gravelly soil, 42.5 ordinary silicons 448 parts of acid salt cement, I grade 332 parts of flyash, 200 parts of silicon ash, 148 parts of quick lime mountain flour, 100 parts of iron powder, concrete regenerant 50 parts, 200 parts of iron content polypropylene fibre, 469 parts of water；The gravelly soil is to be ground to 90% or more partial size to be less than the ultra-fine of 1mm Soil；The silicon ash is unformed spherical particle, SiO in silicon ash₂Mass content be not less than 83%, SiO₂Specific surface area it is not small In 15m²/g；The main component of the concrete regenerant is prenyl polyoxyethylene ether, hydrogen peroxide, three second of vinyl Oxysilane, sodium hydroxide, ferrous sulfate, acrylic acid, methylallyl polyethylene glycol polymeric monomer, acrylic acid, ammonium persulfate, mercapto Guanidine-acetic acid, branching surface-active macromonomer and sodium hydrogensulfite；For the partial size of the quick lime mountain flour less than 100 μm, the iron powder is grain Diameter is less than the black particle of 150um；The iron content polypropylene fibre is dispersed in the polyacrylic polymer of melting by iron powder, It is obtained by squeezing spinneret, the mass content of the iron in the iron content polypropylene fibre is 0.7%, the iron content polypropylene fibre Diameter be 0.2mm~0.5mm, length is 12mm~35mm, and the tensile strength of iron content polypropylene fibre is greater than 400MPa.

Step 1: by gravelly soil be ground to 90% or more partial size be less than 1mm ultra-fine soil, then by 810 parts it is ultra-fine soil, 448 part of 42.5 ordinary portland cement, 332 parts of I grade of flyash, 200 parts of silicon ashes, 148 parts of quick lime mountain flours and 100 parts of iron powders are mixed It is stirred evenly after conjunction, is then uniformly added into 200 parts of iron content polypropylene fibres under stirring conditions, then stir, obtains To mixture；

It is uniformly mixing to obtain mixed solution Step 2: 50 parts of concrete regenerants are added in 469 parts of water, then will be mixed Conjunction solution, which is added in mixture obtained in step 1, to be stirred, and concrete slurry is obtained；

Embodiment 12

The ultra-fine earth concrete of the present embodiment is made of the component of following mass fraction: 1500 parts of composite soil, 42.5 is common 400 parts of portland cement, I grade 310 parts of flyash, 195 parts of silicon ash, 66 parts of concrete regenerant, iron content polypropylene fibre 100 Part, 463 parts of water；The composite soil is the ultra-fine soil for being ground to 90% or more partial size and being less than 1mm, and the composite soil is by 700 parts of Huangs Soil and 800 parts of red clays mix；The silicon ash is unformed spherical particle, SiO in silicon ash₂Mass content be not less than 83%, SiO₂Specific surface area be not less than 15m²/g；The main component of the concrete regenerant is prenyl polyoxyethylene Ether, hydrogen peroxide, vinyltriethoxysilane, sodium hydroxide, ferrous sulfate, acrylic acid, methylallyl polyethylene glycol are big Monomer, acrylic acid, ammonium persulfate, thioacetic acid, branching surface-active macromonomer and sodium hydrogensulfite；The iron content polypropylene fibre by Iron powder is dispersed in the polyacrylic polymer of melting, is obtained by squeezing spinneret, the iron in the iron content polypropylene fibre Mass content be 0.7%, the diameter of the iron content polypropylene fibre is 0.2mm~0.3mm, and length is 12mm~35mm, is contained The tensile strength of iron polypropylene fibre is greater than 400MPa.

Composite soil in the present embodiment can also mix for loess and sand, and loess and gravelly soil mix, red glutinous Soil and sand mix, and red clay and gravelly soil mix or sand and gravelly soil mix.

Step 1: loess and red clay are ground to the ultra-fine soil that 90% or more partial size is less than 1mm, then by 700 parts of Huangs Soil it is ultra-fine soil and 800 parts of red clays it is ultra-fine soil mix after with 400 part of 42.5 ordinary portland cement, 310 parts of I grade of flyash and It is stirred evenly after 195 parts of silicon ash mixing, then is uniformly added into 100 parts of iron content polypropylene fibres under stirring conditions, be sufficiently stirred Uniformly, mixture is obtained；

Step 3: concrete slurry obtained in step 2 is poured into mold, then successively plugged and pounded and vibrated, is passed through It stands after floating and demoulds afterwards for 24 hours at room temperature, then carry out health；The condition of the health are as follows: in 85 DEG C~95 DEG C of steam item Health is taken out after 3 days and is cooled down at room temperature under part.

Embodiment 13

The ultra-fine earth concrete of the present embodiment is made of the component of following mass fraction: 1600 parts of composite soil, 42.5 is common 310 parts of portland cement, I grade 240 parts of flyash, 100 parts of silicon ash, 60 parts of concrete regenerant, iron content polypropylene fibre 100 Part, 523 parts of water；The composite soil is the ultra-fine soil for being ground to 90% or more partial size and being less than 1mm, and the composite soil is by 500 parts of Huangs Soil, 500 parts of red clays and 600 parts of gravelly soils mix；The silicon ash is unformed spherical particle, SiO in silicon ash₂Quality Content is not less than 83%, SiO₂Specific surface area be not less than 15m²/g；The main component of the concrete regenerant is isoprene Base polyoxyethylene ether, hydrogen peroxide, vinyltriethoxysilane, sodium hydroxide, ferrous sulfate, acrylic acid, methylallyl Polyethylene glycol polymeric monomer, acrylic acid, ammonium persulfate, thioacetic acid, branching surface-active macromonomer and sodium hydrogensulfite；The iron content is poly- Tacryl is dispersed in the polyacrylic polymer of melting by iron powder, is obtained by squeezing spinneret, the iron content polypropylene The mass content of iron in fiber is 0.8%, and the diameter of the iron content polypropylene fibre is 0.2mm~0.3mm, length 12mm The tensile strength of~17mm, iron content polypropylene fibre are greater than 400MPa.

The composite soil of the present embodiment can also mix for loess, red clay and sand, loess, gravelly soil and sand mixing It forms or red clay, sand and gravelly soil mixes.

Step 1: loess, red clay and gravelly soil are ground to the ultra-fine soil that 90% or more partial size is less than 1mm, then will 500 parts of loess it is ultra-fine soil, 500 parts of red clays it is ultra-fine soil and 600 parts of gravelly soils it is ultra-fine soil mixing after with 310 part of 42.5 common silicic acid It is stirred evenly after salt cement, 240 parts of I grade of flyash and 100 parts of silicon ash mixing, then is uniformly added into 100 parts under stirring conditions Iron content polypropylene fibre, stirs, and obtains mixture；

It is uniformly mixing to obtain mixed solution Step 2: 60 parts of concrete regenerants are added in 523 parts of water, then will be mixed Conjunction solution, which is added in mixture obtained in step 1, to be stirred, and concrete slurry is obtained；

Step 3: concrete slurry obtained in step 2 is poured into mold, then successively plugged and pounded and vibrated, is passed through It stands after floating and demoulds afterwards for 24 hours at room temperature, then carry out health；The condition of the health are as follows: in 85 DEG C~95 DEG C of steam item Health is taken out after 4 days and is cooled down at room temperature under part.

Embodiment 14

The ultra-fine earth concrete of the present embodiment is made of the component of following mass fraction: 1500 parts of composite soil, 42.5 is common 380 parts of portland cement, II grade 280 parts of flyash, 120 parts of silicon ash, 60 parts of concrete regenerant, iron content polypropylene fibre 100 Part, 490 parts of water；The composite soil is the ultra-fine soil for being ground to 90% or more partial size and being less than 1mm, and the composite soil is by 400 parts of Huangs Soil, 400 parts of red clays, 400 parts of gravelly soils and 300 parts of sands mix；The silicon ash is unformed spherical particle, in silicon ash SiO₂Mass content be not less than 83%, SiO₂Specific surface area be not less than 15m²/g；The main component of the concrete regenerant For prenyl polyoxyethylene ether, hydrogen peroxide, vinyltriethoxysilane, sodium hydroxide, ferrous sulfate, acrylic acid, Methylallyl polyethylene glycol polymeric monomer, acrylic acid, ammonium persulfate, thioacetic acid, branching surface-active macromonomer and sodium hydrogensulfite； The iron content polypropylene fibre is dispersed in the polyacrylic polymer of melting by iron powder, is obtained by squeezing spinneret, described The mass content of iron in iron content polypropylene fibre is 0.7%, and the diameter of the iron content polypropylene fibre is 0.2mm~0.3mm, Length is 12mm~35mm, and the tensile strength of iron content polypropylene fibre is greater than 400MPa.

Step 1: loess, red clay, gravelly soil and sand are ground to the ultra-fine soil that 90% or more partial size is less than 1mm, so The ultra-fine soil of 400 parts of loess, the ultra-fine soil of 400 parts of red clays, the ultra-fine soil of 400 parts of gravelly soils and the ultra-fine soil of 300 parts of sands are mixed afterwards It stirs evenly, then is stirring after being mixed afterwards with 380 part of 42.5 ordinary portland cement, 280 parts of II grade of flyash and 120 parts of silicon ashes Under conditions of be uniformly added into 100 parts of iron content polypropylene fibres, stir, obtain mixture；

It is uniformly mixing to obtain mixed solution Step 2: 60 parts of concrete regenerants are added in 490 parts of water, then will be mixed Conjunction solution, which is added in mixture obtained in step 1, to be stirred, and concrete slurry is obtained；

The performance for the concrete that 1~embodiment of embodiment 14 is prepared is detected, as a result as shown in table 1 below.

The performance for the concrete that 1 1~embodiment of embodiment 14 of table is prepared

As it can be seen from table 1 resistance to compressions in seven days of the concrete finished product being prepared in 1~embodiment of the embodiment of the present invention 14 Intensity is not less than 22MPa, reaches as high as 80MPa, flexural strength is not less than 4.31MPa within seven days, reaches as high as 22MPa, accords with The requirement for closing JTG D40-2011 " highway cement concrete pavement design specification ", illustrate the concrete that is prepared of the present invention at Product can be used for concrete pavement；Concrete brick is prepared using the concrete that the present invention is prepared, which resists Tensile strength meets two blind headers in " GB5101-2003 fired common brick " and " GBT2542-2012 Test methods for wall bricks " The compression strength of overlapping is greater than the regulation of 10MPa, illustrates that the concrete brick of the concrete being prepared with present invention preparation can replace For existing fired brick.

The above is only presently preferred embodiments of the present invention, is not intended to limit the invention in any way.It is all according to invention skill Art any simple modification, change and equivalence change substantially to the above embodiments, still fall within technical solution of the present invention Protection scope in.

Claims

1. a kind of ultra-fine earth concrete, which is characterized in that be made of the component of following mass fraction: 810~2290 parts of soil, cement 149~448 parts, 82.6~332 parts of flyash, 49.4~200 parts of silicon ash, 40~100 parts of concrete regenerant, iron content polypropylene 0.1~200 part of fiber, 0~148 part of quick lime mountain flour, 0~100 part of iron powder, 318~827 parts of water；The soil is to be ground to 90% or more partial size is less than the ultra-fine soil of 1mm；The iron content polypropylene fibre is gathered by the polypropylene that iron powder is dispersed in melting It closes in object, then obtained by squeezing spinneret.

2. a kind of ultra-fine earth concrete according to claim 1, which is characterized in that the soil is gravelly soil, sand, powder One or more of soil, cohesive soil.

3. a kind of ultra-fine earth concrete according to claim 1, which is characterized in that by the component system of following mass fraction At: 810~2290 parts of soil, 149~448 parts of cement, 82.6~332 parts of flyash, 49.4~200 parts of silicon ash, concrete regenerating 40~100 parts of agent, 0.1~200 part of iron content polypropylene fibre, 5~148 parts of quick lime mountain flour, 3~100 parts of iron powder, water 318~ 827 parts.

4. a kind of ultra-fine earth concrete according to claim 1, which is characterized in that the silicon ash is unformed spherical , SiO in silicon ash₂Mass content be not less than 83%, SiO₂Specific surface area be not less than 15m²/g。

5. a kind of ultra-fine earth concrete according to claim 1, which is characterized in that the iron in the iron content polypropylene fibre Mass content be 0.1%~3%, the diameter of the iron content polypropylene fibre is 0.2mm~2.5mm, length be 10mm~ The tensile strength of 35mm, iron content polypropylene fibre are greater than 400MPa.

6. a kind of ultra-fine earth concrete according to claim 1, which is characterized in that the concrete regenerant it is main at It is divided into prenyl polyoxyethylene ether, hydrogen peroxide, vinyltriethoxysilane, sodium hydroxide, ferrous sulfate, propylene Acid, methylallyl polyethylene glycol polymeric monomer, acrylic acid, ammonium persulfate, thioacetic acid, branching surface-active macromonomer and bisulfite Sodium.

7. a kind of ultra-fine earth concrete according to claim 1, which is characterized in that the flyash be I grade of flyash or II grade of flyash.

8. a kind of ultra-fine earth concrete according to claim 3, which is characterized in that the partial size of the quick lime mountain flour is less than 100μm；The iron powder is the black particle that partial size is less than 150um.

9. a kind of preparation method for preparing the ultra-fine earth concrete as described in any claim in claim 1~8, feature It is, method includes the following steps:

Step 1: soil is ground to the ultra-fine soil that 90% or more partial size is less than 1mm, then by ultra-fine soil, cement, flyash, silicon It is stirred evenly after ash, agstone and iron powder mixing, is then uniformly added into steel fibre under stirring conditions, then be sufficiently stirred It is even, obtain mixture；

It is uniformly mixing to obtain mixed solution Step 2: concrete regenerant is added to the water, is then added to mixed solution It is stirred in mixture obtained in step 1, obtains concrete slurry；

Step 3: concrete slurry obtained in step 2 is poured into mold, is then successively plugged and pounded and vibrated, through smoothing out It stands 18h~demould afterwards for 24 hours at room temperature afterwards, then carries out health.

10. according to the method described in claim 9, it is characterized in that, the condition of health described in step 3 are as follows: 85 DEG C~95 DEG C steam condition under take out after health 3~5 days and cool down at room temperature, or the health 5 under 40 DEG C~60 DEG C of water bath condition It takes out after it and cools down at room temperature, or concrete is sprayed water at room temperature moisture-keeping maintaining 5 days.