CN109111171A - A kind of C120 high-strength concrete and preparation method thereof - Google Patents

Abstract

The invention belongs to concrete fields, specifically disclose a kind of C120 high-strength concrete and preparation method thereof, the concrete is made of following material: 435-515 parts of cement, 35-55 parts of flyash, 90-110 parts of miberal powder, 55-75 parts of solid sulfur ash, 20-40 parts of silicon ash, 900-1100 parts of coarse aggregate, 450-650 parts of fine aggregate, 4.5-6.5 parts of water-reducing agent, 10-20 parts of corrosion inhibitor, 130-150 parts of water, based on parts by weight.The present invention provides a kind of C120 high-strength concretes, the concrete has good slump, divergence, compression strength, excellent combination property, while the conventional cements admixture shortage of resources such as overcome flyash, miberal powder, silicon ash and solid sulfur ash utilization approaches are limited, utilization rate is low problem.

Description

A kind of C120 high-strength concrete and preparation method thereof

Technical field

The invention belongs to concrete fields, specifically disclose a kind of C120 high-strength concrete and preparation method thereof.

Background technique

High-strength concrete is the concrete that compression strength meets or exceeds 60MPa.High-strength concrete is built as a kind of new Build material, with the advantages such as its compression strength is high, non-deformability is strong, density is big, porosity is low, in high building structure, greatly across It is widely used in degree bridge structure and certain unique constructions.

Currently, in the technology of preparing of high-strength concrete, usually using Industrial Solid Wastes such as miberal powder, flyash, silicon ashes as water Mud admixture is used as cementitious material after compounding by a certain percentage with ordinary portland cement.This with all using normal silicate In comparison cement does cementitious material, the alternative part ordinary portland cement of the incorporation of miberal powder, flyash, silicon ash etc., thus Cement consumption is reduced, reaches the purpose of reducing cement industry production energy consumption, the discharge of pollution exhaust gas；Outside except this, miberal powder, fine coal The incorporation of ash, silicon ash etc. generally can also improve mechanical property, anticorrosive, frost resistance, durability of concrete etc., action principle Mainly utilize the Micro-aggregate filling effects of Industrial Solid Wastes such as slag micropowder, flyash and potential pozzolanic activity.However, with Economic construction of China high speed development, construction scale are constantly expanded, and the conventional cements such as miberal powder, flyash, silicon ash admixture is also increasingly It faces shortage of resources, the problems such as quality of supplying seriously glides, usually causes the undesirable consequence of concrete performance.Therefore, if can open The Industrial Solid Waste for sending out class other makees cement admixture, and can substitute or substitute completely above-mentioned traditional industry solid waste preparation to a certain degree High-strength concrete can not only then alleviate the problem of the resources such as miberal powder, flyash, silicon ash worsening shortages, while can also enrich other The resource utilization approach of class Industrial Solid Waste.

Circulating fluidized bed boiler coal combustion and sulfur fixation ash refers to that sulfur-bearing coal and sulphur-fixing agent are mixed with certain proportion (Ca/S=2.0-2.5) It is generated after (850~950 DEG C) of certain temperature are calcined solid sulphur in circulating fluidized bed boiler after conjunction to be collected in the useless of flue Ash is abandoned, hereinafter referred to as " solid sulfur ash ".Alpha-quartz, active silica-alumina mineral, bloodstone and anhydrite are mainly contained in solid sulfur ash, and A small amount of free calcium oxide and lime stone, chemical component mainly include Al₂O₃、SiO₂、Fe₂O₃、SO₃, CaO, MgO and f-CaO. The solid sulfur ash of different regions, chemical component, mineral composition, in terms of there is some difference.Currently, China consolidates sulphur The annual emissions of ash in ten-million-ton scale, it is limited, utilization rate is low because there are resource utilization approach the problems such as, mostly use stacking or fill out The mode buried is handled, and not only land occupation resource but also be easy to cause environmental pollution.Studies have shown that solid sulfur ash not only have it is potential Pozzolanic activity also has the characteristics that the hydraulicity, while also having micron particles grain diameter characteristic, therefore have and mix as cement Close the primary condition of material.

Summary of the invention

To overcome the problems, such as the conventional cements admixture such as miberal powder, flyash, silicon ash resource worsening shortages and solid sulfur ash resource The problem that change approach is limited, utilization rate is low, the present invention provides a kind of C120 high-strength concretes and preparation method thereof.

Technical scheme is as follows:

A kind of C120 high-strength concrete, is made of following material: 435-515 parts of cement, 35-55 parts of flyash, miberal powder 90- 110 parts, 55-75 parts of solid sulfur ash, 20-40 parts of silicon ash, 900-1100 parts of coarse aggregate, 450-650 parts of fine aggregate, water-reducing agent 4.5- 6.5 parts, 10-20 parts of corrosion inhibitor, 130-150 parts of water, based on parts by weight.

Preferably, a kind of C120 high-strength concrete, is made of following material: 455-495 parts of cement, flyash 40-50 Part, 500-600 parts of fine aggregate, subtracts 95-105 parts of miberal powder, 60-70 parts of solid sulfur ash, 25-35 parts of silicon ash, 950-1050 parts of coarse aggregate 5-6 parts of aqua, 8-13 parts of corrosion inhibitor, 135-145 parts of water, based on parts by weight.

Further, a kind of C120 high-strength concrete, is made of following material: 475 parts of cement, 45 parts of flyash, miberal powder 100 parts, 65 parts of solid sulfur ash, 30 parts of silicon ash, 1030 parts of coarse aggregate, 570 parts of fine aggregate, 5.6 parts of water-reducing agent, 11 parts of corrosion inhibitor, water 138 parts, based on parts by weight.

The cement is selected from 525 cement of P.O, is provided by Dujiang weir Lafarge Cement Co., Ltd, performance test results It is as follows: normal consistency water requirement 27.1%, specific surface area 373m²·kg^-1, presetting period 153min, final setting time 272min, 3 Its flexural strength 6.1MPa, 28 days flexural strengths 8.5MPa, 3 days compression strength 31.5MPa, 28 days compression strength 60.6MPa, SO₃Content 2.16% (≤3.5%), content of MgO 2.54% (≤5%), stability are qualified.

The flyash is selected from I grade of flyash of original state F class, is provided by Sichuan Tie Run commerce and trade Co., Ltd, performance detection As a result as follows: normal consistency water requirement 23.2%, specific surface area 414m²·kg^-1, SO₃Content 1.2%, content of MgO 0.83%, 28 days compressive strength rates 93.1%.

The miberal powder is selected from S95 grades of graining blast-furnace cinder micro-powders, is provided by Chengdu Tong Xin building materials Co., Ltd, performance inspection It is as follows to survey result: specific surface area 478m²·kg^-1, than 101%, 28 day compressive strength rate 99.5% of fluidity.

The solid sulfur ash is selected from the solid sulfur ash by grinding processing, and original state solid sulfur ash is by Neijiang City in Sichuan Province Baima thermal power plant It provides, the performance test results of solid sulfur ash are as follows after grinding processing: normal consistency water requirement 37.9%, specific surface area are 735m²·kg^-1, SO₃Content 8.7%, content of MgO 2.74%, 28 days compressive strength rates 84.6%.Wherein, the solid sulfur ash Grinding processing method is as follows: weighing grinding 60min in original state solid sulfur ash investment 500 × 500mm of Φ cement testing ball mill.

The silicon ash is selected from the silicon ash of high activity, is provided by Sichuan Hui Ye silicon ash Materials Co., Ltd, performance detection knot Fruit is as follows: SiO₂Content is 92.6%, specific surface area 22000m²·kg^-1, 28 days activity indexs are 121%.

The coarse aggregate is selected from 5-20mm continuous grading basaltic broken stone, apparent density 2760kg/m³, clay content 0.5%, Clod content 0.2%, elongated particles 6.5%, crush values 4.7%, compressive strength of rock 175Mpa.

The fine aggregate is selected from natural river sand, and sand in category, fineness modulus 2.67, particle size distribution meets national standard 2nd area of natural sand requires in GB/T 14684-2011 " construction sand ", clay content 0.1%.

The water-reducing agent is selected from Sika3301 type high performance water reducing agent of polyocarboxy acid, are mentioned by Sequa Corp of Switzerland For, solid content 50%, water-reducing rate 40% is good with cement and mineral admixture adaptability.

The corrosion inhibitor is selected from compound alkamine reinforcing steel bar corrosion inhibitor, limited by Beijing Dechang great achievement architectural engineering technology Company provides, good with cement and mineral admixture adaptability.

A kind of preparation method of C120 high-strength concrete, the specific steps are as follows:

(1) raw material are accurately weighed by above-mentioned weight ratio, by cement, miberal powder, flyash, solid sulfur ash, silicon ash, thin bone Material, coarse aggregate, corrosion inhibitor are put into concrete mixer；

(2) water-reducing agent and water are mixed into the dilute solution containing water-reducing agent again；

(3) start blender, stirring 30-60s is uniformly mixed the material in blender first, then starts into blender Above-mentioned dilute solution is at the uniform velocity added, dilute solution all adds time control within the scope of 10-20s, continues to stir 3-5min i.e. C120 high-strength concrete can be made.

52.5 ordinary portland cements, I grade of flyash, S95 miberal powder, grinding solid sulfur ash, high activity silicon ash structure in the present invention The Ca (OH) generated at the gelling system of C120 high-strength concrete, hydrated cementitious₂It is miberal powder, flyash, silicon ash and solid sulphur The main exciting agent of grey potential activity, while flyash, miberal powder, solid sulfur ash and silicon ash are also the important of the gelling system gelling Source.

Compared with 52.5 ordinary portland cements are used alone and make high-strength concrete cementitious material, mixed again in cement a certain amount of Flyash, miberal powder, after solid sulfur ash and silicon ash will necessarily the hydration and hardening performance to high-strength concrete gelling system generate it is certain The influence of degree.Physical and chemical performance between flyash, miberal powder, solid sulfur ash and silicon ash is there are larger difference, and four to high-strength The Influencing Mechanism of concrete gelling system performance is also just inevitable different, if but can make full use of different component substance in gelling system Physical and chemical performance feature, realize different component between optimum organization, then be conducive to the hydration and hardening for improving entire gelling system Performance.

Flyash generally refers to a kind of fine ash being collected into from coal-fired plant flue gas.Contain a large amount of activity in flyash Siulica-alumina mineral, but research shows that the oxygen-octahedron degree of polymerization of its siulica-alumina mineral is higher, therefore, the item that potential activity is excited Part is relatively harsh.When flyash and cement are mixed again by a certain percentage, the Ca (OH) of hydrated cementitious generation₂It is difficult just to fill in the early stage Its potential activity is sent out in shunt excitation, and activity generally just shows in the later period of hydrated cementitious (some months is even after several years), and It is mainly shown as the later strength of enhancing gelling system.Fly ash grain has the characteristics that the smooth fine and close, inner hollow in surface, uses Ball benefit can be played in gelling system, lowers the water requirement of gelling system, improve its workability.Flyash selected by the present invention Specific surface area be 414m²·kg^-1, the specific surface area 373m of cement²·kg^-1, this illustrates that fly ash grain partial size is low on the whole In cement granules, part fly ash grain can be filled in the gap formed between cement granules, to make gelling system Particle packing is even closer.

Miberal powder is a kind of high fineness obtained after the process such as drying, grinding with blast furnace slag, high activity powder Material.The main chemical compositions of miberal powder and portland cement are substantially identical, and primary structure is silicate glass body structure, potential Activity is mostly derived from the oxygen-octahedron in its vitreous structure.Studies have shown that the oxygen-octahedron degree of polymerization in miberal powder is lower, The relative populations of Si-O key are less, thus chemical activity with higher；In addition to this, there is also certain in the vitreum of miberal powder Aluminum-oxygen tetrahedron, sexadentate, the AlO of quantity⁺Ion, this further enhances its potential activity.The active excitation of miberal powder Mode includes physical excitation and chemi-excitation, but the active performance of miberal powder depends primarily on the effect of chemi-excitation, commonly Chemi-excitation mode has alkali-activated carbonatite and sulphate activation.When miberal powder and cement are mixed again, hydrolysis product of cement Ca (OH)₂In OH^-From Son makes oxygen-octahedron, aluminum-oxygen tetrahedron in miberal powder etc. that " solving polymerization " reaction, silicon oxygen four existing for oligomeric conjunction state occur Face body, aluminum-oxygen tetrahedron etc. gradually decrease, and high polymerization degree content of material gradually increases, finally with C-S-H (hydrated calcium silicate) The hydrated products such as gel, C-A-H (drated calcium aluminate) gel exist, and which constitute be gelled in Slag Powder-Cement complex cementitious system The important sources of property.The addition that sulphate activation is primarily referred to as sulfate makes Ca when miberal powder aquation²⁺And Al³⁺Plasma it is dense Degree balance is destroyed, Ca²⁺And Al³⁺The concentration of plasma reduces, and promotes hydration reaction to production entringite and other similar products Direction develop, this can accelerate CaO, Al in miberal powder₂O₃Deng aquation, to promote the aquation of miberal powder.Studies have shown that alkali-activated carbonatite It is best to the stimulation effect of miberal powder potential activity with sulphate activation collective effect.The specific surface area of miberal powder selected by the present invention is 478m²Kg, the specific surface area 373m of cement²·kg^-1, the specific surface area of flyash is 414m²·kg^-1, this illustrates miberal powder Grain partial size is lower than the partial size of cement and fly ash grain on the whole, part mineral powder granular can be filled between cement granules with And in the gap formed between fly ash grain, to keep the particle packing of gelling system even closer.

Solid sulfur ash generally refers to a kind of fine ash being collected into from coal-burning power plant's flue.Although the receipts of solid sulfur ash and flyash Set method is similar, but the formation environment of the two and process difference, and there are great differences for physical and chemical performance.Also containing a large amount of in solid sulfur ash Active silica-alumina mineral, but in solid sulfur ash siulica-alumina mineral potential activity be lower than flyash, this is because the formation temperature of solid sulfur ash Spend about 850~950 DEG C of 1300~1600 DEG C of formation temperature for being far below flyash.But some researches show that sial mines in solid sulfur ash The degree of polymerization of the oxygen-octahedron of object is lower than flyash, this makes the potential activity of solid sulfur ash be easier to be excited, works as solid sulfur ash When mixing again by a certain percentage with cement, compared to flyash, be conducive to the morning, the mid-term intensity that improve gelling system.Institute of the present invention The specific surface area for selecting solid sulfur ash is 735m²Kg, the specific surface area 373m of cement²·kg^-1, the specific surface area of flyash is 414m²·kg^-1, the specific surface area of miberal powder is 478m²·kg^-1, this illustrates that fly ash grain partial size is far below cement, powder on the whole The partial size of coal ash, mineral powder granular, a large amount of solid sulfur ash particle can be filled between cement granules, between fly ash grain and In the gap formed between mineral powder granular, to keep the particle packing of gelling system even closer.

Silicon ash generally refer to be ferroalloy in smelting duriron and industrial silicon (metallic silicon) gas containing Si discharge after with air Rapid oxidation condensation precipitates.Silicon content in silicon ash is higher, general up to 90% or so, has good volcanic ash living Property；Meanwhile the grain diameter very little of silicon ash, average grain diameter about 0.1-0.3um, specific surface area are very big；On the other hand, due to silicon ash In forming process, by the effect of surface tension, noncrystalline mutually amorphous spherical particle, particle surface more light are formd It is sliding, the effect of volatilizable lubricated balls when being used with blending such as cement.Silicon ash specific surface area selected by the present invention is 22000m²·kg^-1, silicon ash grain diameter is far below the grain diameter of unclassified stores component in gelling system, silicon ash on the whole Grain can be filled in the gap formed between unclassified stores component particles, so that the particle packing of gelling system be made more to step up It is close.

Flyash, miberal powder and silicon ash usually only have potential pozzolanic activity, and solid sulfur ash not only has potential fire Mountain ash activity, also has the hydraulicity and hydration swelling, this removes active silica-alumina derived from the particularity of its internal active mineral composition Outside mineral, calcium oxide, anhydrite are also contained in solid sulfur ash；In addition, being different from flyash (and miberal powder) particle has smooth table The loose porous shape characteristic in inside and outside is presented in the characteristics of face, solid sulfur ash particle.It is handled by grinding, solid sulfur ash can be changed The loose porous shape characteristic of grain, is obviously reduced its grain diameter, particle interior porosity is substantially reduced, specific surface area is obvious Increase, this advantageously reduce its water requirement, reduce its particle surface micropore to the absorption of organic macromolecule, to improve its integrally living Property, promote wherein benefits such as slightly solubility anhydrite acceleration of hydration.

The present invention utilizes I grade of flyash, S95 miberal powder, grinding solid sulfur ash, four kinds of admixtures of high activity silicon ash and 52.5 simultaneously Ordinary portland cement is mixed the gelling system for constituting high-strength concrete again, and novelty, which essentially consists in, has given full play to difference Mutual supplement with each other's advantages between material component on physical and chemical performance, the effect mutually enhanced: in terms of chemical action, silicate cement hydration is raw At Ca (OH)₂The potential activity of flyash, miberal powder, solid sulfur ash and silicon ash, while solid sulfur ash can be excited as alkali-activator The dihydrate gypsum that middle anhydrite hydration is formed further excites flyash, miberal powder, solid sulfur ash and silicon ash as sulphate activation agent The potential activity of itself, " alkali-activated carbonatite effect+sulphate activation effect " make more abundant, the closely knit heavily fortified point of the hydrated product of gelling system Gu flyash, miberal powder, solid sulfur ash and silicon ash potential activity more fully excited, resource value obtains more efficiently Utilization.In terms of physical action, in the gel that above-mentioned ordinary portland cement, flyash, miberal powder, solid sulfur ash and silicon ash are constituted In system, have by specific surface area sequence: silicon ash > solid sulfur ash > miberal powder > flyash > ordinary portland cement illustrates different material component Particle size range press certain gradient distribution, this is conducive to mutually to fill between particle in gelling system, it is tightly packed to be formed, To reduce gelling system water requirement, gelling system microstructural flaws are reduced.

Basaltic broken stone and natural river sand together constitute the aggregate system of concrete in the present invention.

Volume accounting of the coarse aggregate in high-strength concrete is generally 40-50%.Coarse aggregate can play rigidity in concrete Skeleton function, improves the intensity and elasticity modulus of concrete, to enhance the volume stability and durability of concrete.Coarse aggregate The effect for stopping micro-crack extension can also be played, caused by because of concrete internal stress when micro-crack extension to coarse aggregate, slightly Aggregate can utilize the characteristics of itself high intensity, large volume effectively to stop further expanding for crackle, to enhance concrete Stability.In addition, the interface because volume accounting of the coarse aggregate in concrete is very high, between coarse aggregate and concrete gelling system Transition region is more, and interfacial transition zone is one of the key influence factor of mechanical performance of concrete etc., so the surface of coarse aggregate Performance influences the performance of concrete often through interfacial transition zone is influenced.Coarse aggregate used in the present invention is basaltic broken stone, Compressive strength of rock compared with high, gravel particle rough surface, flat-elongated particles content is few, clay content is low, therefore be conducive to high-strength Rigid aggregate effect is played in concrete and prevents the effect of micro-crack extension, while concrete being made to obtain higher interface mistake Cross area's intensity.

Volume accounting of the fine aggregate in concrete is generally 25-35%.Fine aggregate is between gelling system and coarse aggregate Crucial tie, be one of important factor in order of concrete performance.Fine aggregate can also play rigid aggregate in concrete Effect and the effect for preventing micro-crack extension, but it is still different with the effect of coarse aggregate.Fine aggregate particle can be filled in In the gap formed between coarse aggregate particle, and gelling system is then filled primarily in the gap formed between fine aggregate particle, The good fine aggregate of grain composition tends to form itself even closer accumulation, this both can effectively fill shape between coarse aggregate particle At gap, and advantageously reduce gelling system dosage needed for the gap that is formed between filling fine aggregate particle.Therefore, thin bone Material can not only influence working performance, mechanical property, volume stability and the durability etc. of concrete, but also influence whether glue The dosage of solidifying system.Fine aggregate used in the present invention is natural river sand, and grain composition is good, clay content is low, this helps to make Concrete obtains good working performance, mechanical property, volume stability and durability etc., while reducing the use of gelling system Amount.

The present invention constructs the aggregate system of concrete using basaltic broken stone and natural river sand, is fully considering thickness bone On the basis of expecting physical features, based on closestpacking principle etc., it is determined that (i.e. fine aggregate is in aggregate body for the sand coarse aggregate ratio of aggregate system Weight ratio in system), so that aggregate system is substantially conformed to closestpacking principle, this can greatly improve the workability of concrete Can, volume stability and durability etc., while reducing gelling system dosage, economize on resources and cost.

High performance water reducing agent of polyocarboxy acid is mainly used for reducing concrete water amount in the present invention, improves the mechanical property of concrete Can, while improving the fluidity and workability of concrete, main function mechanism is: equivalent by electrostatic repulsion and steric hindrance It should make hydrone high degree of dispersion, efficiently utilization in concrete gelling system, to reduce the use of concrete under certain fluidity Water.

Compound alkamine reinforcing steel bar corrosion inhibitor is mainly used for preventing inside concrete steel bar corrosion in the present invention, main The mechanism of action is: after amino alcohol reinforcing steel bar corrosion inhibitor is added in high-strength concrete, the different component in corrosion inhibitor can be in bar list Face forms adsorbed film, precipitation membrane and oxidation film, plays the contact for blocking harmful substance with rebar surface, prevents or delay to corrode The time of generation.Compound alkamine reinforcing steel bar corrosion inhibitor simultaneously can also be effectively improved high-strength concrete working performance and Its anti-permeability performance is improved, the diffusion rate of dissolved oxygen and the diffusion coefficient of chloride ion are reduced.

C120 high-strength concrete is an organic whole in the present invention, by gelling system, aggregate system, outer in material composition Add agent and water to constitute, be made of in structure Behavior of Hardened Cement Paste, aggregate and interfacial transition zone, passes through optimization gelling system and aggregate system A kind of C120 high-strength concrete with Good All-around Property has been prepared in material composition and ratio.

The beneficial effects of the present invention are:

The present invention provides a kind of C120 high-strength concrete, is made of following material: 435-515 parts of cement, flyash 35-55 Part, 450-650 parts of fine aggregate, subtracts 90-110 parts of miberal powder, 55-75 parts of solid sulfur ash, 20-40 parts of silicon ash, 900-1100 parts of coarse aggregate 4.5-6.5 parts of aqua, corrosion inhibitor part 10-20,130-150 moisture content, based on parts by weight.The present invention utilize simultaneously I grade of flyash, S95 miberal powder, grinding solid sulfur ash, four kinds of admixtures of high activity silicon ash and 52.5 ordinary portland cements are mixed again constitutes high-strength mix The gelling system of soil is coagulated, it is mutual that novelty essentially consists in the advantage given full play between different material component on physical and chemical performance The effect mend, mutually enhanced: in terms of chemical action, the Ca (OH) of silicate cement hydration generation₂It can swash as alkali-activator Hair powder coal ash, miberal powder, solid sulfur ash and silicon ash potential activity, while the dihydrate gypsum conduct that anhydrite hydration is formed in solid sulfur ash Sulphate activation agent further excites the potential activity of flyash, miberal powder, silicon ash and its solid sulfur ash itself, " alkali-activated carbonatite effect+sulphur Hydrochlorate priming effect " keeps the hydrated product of gelling system more abundant, closely knit firm, flyash, miberal powder, solid sulfur ash, silicon ash Potential activity is more fully excited, and resource value obtains more efficiently utilizing.In terms of physical action, above-mentioned common In the gelling system that portland cement, flyash, miberal powder, solid sulfur ash and silicon ash are constituted, have by specific surface area sequence: Gu silicon ash > Sulphur ash > miberal powder > flyash > portland cement illustrates the particle size range of different material component by certain gradient distribution, this has It is tightly packed conducive to mutually filling, being formed between particle in gelling system, to reduce gelling system water requirement, reduce gel It is microstructural flaws.

Meanwhile the present invention constructs the aggregate system of concrete using granite stones and natural river sand, is fully considering On the basis of coarse-fine aggregate physical features, it is based on closestpacking principle, it is determined that (i.e. fine aggregate is in bone for the sand coarse aggregate ratio of aggregate system Weight ratio in Material system), so that aggregate system is substantially conformed to closestpacking principle, this can greatly improve the work of concrete Make performance, volume stability and durability etc., while reducing gelling system dosage, economizes on resources and cost.

In addition, making concrete be provided with rust prevention function present invention further introduces compound alkamine reinforcing steel bar corrosion inhibitor.

C120 high-strength concrete properties prepared by the present invention are excellent, high-strength mixed with traditional C120 without solid sulfur ash Solidifying soil is compared, and C120 high-strength concrete prepared by the present invention has higher slump, divergence, compression strength, this shows this Invention has using the gelling system that solid sulfur ash substitution part flyash, miberal powder and the silicon ash after grinding make cement admixture building Better gelling has better working performance and mechanical property with the C120 high-strength concrete of this gelling system preparation, together When which overcome the conventional cements admixture shortage of resources such as miberal powder, flyash, silicon ash and solid sulfur ash utilization approaches are limited, sharp With the low problem of rate.

Specific embodiment:

Embodiment 1:

A kind of C120 high-strength concrete, is made of following material: 475 parts of cement, 45 parts of flyash, 100 parts of miberal powder, solid sulphur Grey 65 parts, 30 parts of silicon ash, 1030 parts of coarse aggregate, 570 parts of fine aggregate, 5.6 parts of water-reducing agent, 11 parts of corrosion inhibitor, 138 parts of water, with weight Measure number meter.

Wherein cement is selected from 525 cement of P.O, is provided by Dujiang weir Lafarge Cement Co., Ltd, performance test results It is as follows: normal consistency water requirement 27.1%, specific surface area 373m²·kg^-1, presetting period 153min, final setting time 272min, 3 Its flexural strength 6.1MPa, 28 days flexural strengths 8.5MPa, 3 days compression strength 31.5MPa, 28 days compression strength 60.6MPa, SO₃Content 2.16% (≤3.5%), content of MgO 2.54% (≤5%), stability are qualified.

Wherein flyash is selected from I grade of flyash of original state F class, is provided by Sichuan Tie Run commerce and trade Co., Ltd, performance detection As a result as follows: normal consistency water requirement 23.2%, specific surface area 414m²·kg^-1, SO₃Content 1.2%, content of MgO 0.83%, 28 days compressive strength rates 93.1%.

Wherein miberal powder is selected from S95 grades of graining blast-furnace cinder micro-powders, is provided by Chengdu Tong Xin building materials Co., Ltd, performance inspection It is as follows to survey result: specific surface area 478m²·kg^-1, than 101%, 28 day compressive strength rate 99.5% of fluidity.

Wherein solid sulfur ash is selected from the solid sulfur ash by grinding processing, and original state solid sulfur ash is by Neijiang City in Sichuan Province Baima thermal power plant It provides, the performance test results of solid sulfur ash are as follows after grinding processing: normal consistency water requirement 37.9%, specific surface area are 735m²·kg^-1, SO₃Content 8.7%, content of MgO 2.74%, 28 days compressive strength rates 84.6%.Wherein, the solid sulfur ash Grinding processing method is as follows: weighing grinding 60min in original state solid sulfur ash investment 500 × 500mm of Φ cement testing ball mill.

Wherein silicon ash is selected from the silicon ash of high activity, is provided by Sichuan Hui Ye silicon ash Materials Co., Ltd, performance detection knot Fruit is as follows: SiO₂Content is 92.6%, specific surface area 22000m²·kg^-1, 28 days activity indexs are 121%.

Wherein coarse aggregate is selected from 5-20mm continuous grading granite stones, apparent density 2750kg/m³, clay content 0.5%, Clod content 0.2%, elongated particles 7.0%, crush values 5.5%, compressive strength of rock 134Mpa.

Wherein fine aggregate is selected from natural river sand, and sand in category, fineness modulus 2.67, particle size distribution meets national standard 2nd area of natural sand requires in GB/T 14684-2011 " construction sand ", clay content 0.1%.

Wherein water-reducing agent is selected from Sika3301 type high performance water reducing agent of polyocarboxy acid, are mentioned by Sequa Corp of Switzerland For, solid content 50%, water-reducing rate 40% is good with cement and mineral admixture adaptability.

Wherein corrosion inhibitor is selected from compound alkamine reinforcing steel bar corrosion inhibitor, limited by Beijing Dechang great achievement architectural engineering technology Company provides, good with cement and mineral admixture adaptability.

A kind of preparation method of C120 high-strength concrete, the specific steps are as follows:

(1) raw material are accurately weighed by above-mentioned weight ratio, by cement, miberal powder, flyash, solid sulfur ash, silicon ash, thin bone Material, coarse aggregate, corrosion inhibitor are put into concrete mixer；

(2) water-reducing agent and water are mixed into the dilute solution containing water-reducing agent again；

(3) start blender, stirring 30s is uniformly mixed the material in blender first, then starts even into blender Above-mentioned dilute solution is added in speed, and dilute solution all adds time control in 15s, and continuing stirring 5min can be prepared by C120 high Reinforced concrete.

Embodiment 2:

A kind of C120 high-strength concrete, is made of following material: 455 parts of cement, 50 parts of flyash, 105 parts of miberal powder, solid sulphur Grey 70 parts, 35 parts of silicon ash, 1030 parts of coarse aggregate, 570 parts of fine aggregate, 5.6 parts of water-reducing agent, 11 parts of corrosion inhibitor, 138 parts of water, with weight Measure number meter.

Wherein cement is selected from 525 cement of P.O, is provided by Dujiang weir Lafarge Cement Co., Ltd, performance test results It is as follows: normal consistency water requirement 27.1%, specific surface area 373m²·kg^-1, presetting period 153min, final setting time 272min, 3 Its flexural strength 6.1MPa, 28 days flexural strengths 8.5MPa, 3 days compression strength 31.5MPa, 28 days compression strength 60.6MPa, SO₃Content 2.16% (≤3.5%), content of MgO 2.54% (≤5%), stability are qualified.

Wherein flyash is selected from I grade of flyash of original state F class, is provided by Sichuan Tie Run commerce and trade Co., Ltd, performance detection As a result as follows: normal consistency water requirement 23.2%, specific surface area 414m²·kg^-1, SO₃Content 1.2%, content of MgO 0.83%, 28 days compressive strength rates 93.1%.

Wherein miberal powder is selected from S95 grades of graining blast-furnace cinder micro-powders, is provided by Chengdu Tong Xin building materials Co., Ltd, performance inspection It is as follows to survey result: specific surface area 478m²·kg^-1, than 101%, 28 day compressive strength rate 99.5% of fluidity.

Wherein solid sulfur ash is selected from the solid sulfur ash by grinding processing, and original state solid sulfur ash is by Neijiang City in Sichuan Province Baima thermal power plant It provides, the performance test results of solid sulfur ash are as follows after grinding processing: normal consistency water requirement 37.9%, specific surface area are 735m²·kg^-1, SO₃Content 8.7%, content of MgO 2.74%, 28 days compressive strength rates 84.6%.Wherein, the solid sulfur ash Grinding processing method is as follows: weighing grinding 60min in original state solid sulfur ash investment 500 × 500mm of Φ cement testing ball mill.

Wherein silicon ash is selected from the silicon ash of high activity, is provided by Sichuan Hui Ye silicon ash Materials Co., Ltd, performance detection knot Fruit is as follows: SiO₂Content is 92.6%, specific surface area 22000m²·kg^-1, 28 days activity indexs are 121%.

Wherein coarse aggregate is selected from 5-20mm continuous grading granite stones, apparent density 2750kg/m³, clay content 0.5%, Clod content 0.2%, elongated particles 7.0%, crush values 5.5%, compressive strength of rock 134Mpa.

Wherein fine aggregate is selected from natural river sand, and sand in category, fineness modulus 2.67, particle size distribution meets national standard 2nd area of natural sand requires in GB/T 14684-2011 " construction sand ", clay content 0.1%.

Wherein water-reducing agent is selected from Sika3301 type high performance water reducing agent of polyocarboxy acid, are mentioned by Sequa Corp of Switzerland For, solid content 50%, water-reducing rate 40% is good with cement and mineral admixture adaptability.

Wherein corrosion inhibitor is selected from compound alkamine reinforcing steel bar corrosion inhibitor, limited by Beijing Dechang great achievement architectural engineering technology Company provides, good with cement and mineral admixture adaptability.

A kind of preparation method of C120 high-strength concrete, the specific steps are as follows:

(1) raw material are accurately weighed by above-mentioned weight ratio, by cement, miberal powder, flyash, solid sulfur ash, silicon ash, thin bone Material, coarse aggregate, corrosion inhibitor are put into concrete mixer；

(2) water-reducing agent and water are mixed into the dilute solution containing water-reducing agent again；

(3) start blender, stirring 30s is uniformly mixed the material in blender first, then starts even into blender Above-mentioned dilute solution is added in speed, and dilute solution all adds time control in 15s, and continuing stirring 5min can be prepared by C120 high Reinforced concrete.

Embodiment 3:

A kind of C120 high-strength concrete, is made of following material: 495 parts of cement, 40 parts of flyash, 95 parts of miberal powder, solid sulphur Grey 60 parts, 25 parts of silicon ash, 1030 parts of coarse aggregate, 570 parts of fine aggregate, 5.6 parts of water-reducing agent, 11 parts of corrosion inhibitor, 138 parts of water, with weight Measure number meter.

Wherein cement is selected from 525 cement of P.O, is provided by Dujiang weir Lafarge Cement Co., Ltd, performance test results It is as follows: normal consistency water requirement 27.1%, specific surface area 373m²·kg^-1, presetting period 153min, final setting time 272min, 3 Its flexural strength 6.1MPa, 28 days flexural strengths 8.5MPa, 3 days compression strength 31.5MPa, 28 days compression strength 60.6MPa, SO₃Content 2.16% (≤3.5%), content of MgO 2.54% (≤5%), stability are qualified.

Wherein flyash is selected from I grade of flyash of original state F class, is provided by Sichuan Tie Run commerce and trade Co., Ltd, performance detection As a result as follows: normal consistency water requirement 23.2%, specific surface area 414m²·kg^-1, SO₃Content 1.2%, content of MgO 0.83%, 28 days compressive strength rates 93.1%.

Wherein miberal powder is selected from S95 grades of graining blast-furnace cinder micro-powders, is provided by Chengdu Tong Xin building materials Co., Ltd, performance inspection It is as follows to survey result: specific surface area 478m²·kg^-1, than 101%, 28 day compressive strength rate 99.5% of fluidity.

Wherein solid sulfur ash is selected from the solid sulfur ash by grinding processing, and original state solid sulfur ash is by Neijiang City in Sichuan Province Baima thermal power plant It provides, the performance test results of solid sulfur ash are as follows after grinding processing: normal consistency water requirement 37.9%, specific surface area are 735m²·kg^-1, SO₃Content 8.7%, content of MgO 2.74%, 28 days compressive strength rates 84.6%.Wherein, the solid sulfur ash Grinding processing method is as follows: weighing grinding 60min in original state solid sulfur ash investment 500 × 500mm of Φ cement testing ball mill.

Wherein silicon ash is selected from the silicon ash of high activity, is provided by Sichuan Hui Ye silicon ash Materials Co., Ltd, performance detection knot Fruit is as follows: SiO₂Content is 92.6%, specific surface area 22000m²·kg^-1, 28 days activity indexs are 121%.

Wherein coarse aggregate is selected from 5-20mm continuous grading granite stones, apparent density 2750kg/m³, clay content 0.5%, Clod content 0.2%, elongated particles 7.0%, crush values 5.5%, compressive strength of rock 134Mpa.

Wherein fine aggregate is selected from natural river sand, and sand in category, fineness modulus 2.67, particle size distribution meets national standard 2nd area of natural sand requires in GB/T 14684-2011 " construction sand ", clay content 0.1%.

Wherein water-reducing agent is selected from Sika3301 type high performance water reducing agent of polyocarboxy acid, are mentioned by Sequa Corp of Switzerland For, solid content 50%, water-reducing rate 40% is good with cement and mineral admixture adaptability.

Wherein corrosion inhibitor is selected from compound alkamine reinforcing steel bar corrosion inhibitor, limited by Beijing Dechang great achievement architectural engineering technology Company provides, good with cement and mineral admixture adaptability.

A kind of preparation method of C120 high-strength concrete, the specific steps are as follows:

(1) raw material are accurately weighed by above-mentioned weight ratio, by cement, miberal powder, flyash, solid sulfur ash, silicon ash, thin bone Material, coarse aggregate, corrosion inhibitor are put into concrete mixer；

(2) water-reducing agent and water are mixed into the dilute solution containing water-reducing agent again；

(3) start blender, stirring 30s is uniformly mixed the material in blender first, then starts even into blender Above-mentioned dilute solution is added in speed, and dilute solution all adds time control in 15s, and continuing stirring 5min can be prepared by C120 high Reinforced concrete.

Embodiment 4:

A kind of C120 high-strength concrete, is made of following material: 475 parts of cement, 45 parts of flyash, 100 parts of miberal powder, solid sulphur Grey 65 parts, 30 parts of silicon ash, 1050 parts of coarse aggregate, 550 parts of fine aggregate, 5.6 parts of water-reducing agent, 11 parts of corrosion inhibitor, 138 parts of water, with weight Measure number meter.

Wherein cement is selected from 525 cement of P.O, is provided by Dujiang weir Lafarge Cement Co., Ltd, performance test results It is as follows: normal consistency water requirement 27.1%, specific surface area 373m²·kg^-1, presetting period 153min, final setting time 272min, 3 Its flexural strength 6.1MPa, 28 days flexural strengths 8.5MPa, 3 days compression strength 31.5MPa, 28 days compression strength 60.6MPa, SO₃Content 2.16% (≤3.5%), content of MgO 2.54% (≤5%), stability are qualified.

Wherein flyash is selected from I grade of flyash of original state F class, is provided by Sichuan Tie Run commerce and trade Co., Ltd, performance detection As a result as follows: normal consistency water requirement 23.2%, specific surface area 414m²·kg^-1, SO₃Content 1.2%, content of MgO 0.83%, 28 days compressive strength rates 93.1%.

Wherein miberal powder is selected from S95 grades of graining blast-furnace cinder micro-powders, is provided by Chengdu Tong Xin building materials Co., Ltd, performance inspection It is as follows to survey result: specific surface area 478m²·kg^-1, than 101%, 28 day compressive strength rate 99.5% of fluidity.

Wherein solid sulfur ash is selected from the solid sulfur ash by grinding processing, and original state solid sulfur ash is by Neijiang City in Sichuan Province Baima thermal power plant It provides, the performance test results of solid sulfur ash are as follows after grinding processing: normal consistency water requirement 37.9%, specific surface area are 735m²·kg^-1, SO₃Content 8.7%, content of MgO 2.74%, 28 days compressive strength rates 84.6%.Wherein, the solid sulfur ash Grinding processing method is as follows: weighing grinding 60min in original state solid sulfur ash investment 500 × 500mm of Φ cement testing ball mill.

Wherein silicon ash is selected from the silicon ash of high activity, is provided by Sichuan Hui Ye silicon ash Materials Co., Ltd, performance detection knot Fruit is as follows: SiO₂Content is 92.6%, specific surface area 22000m²·kg^-1, 28 days activity indexs are 121%.

Wherein coarse aggregate is selected from 5-20mm continuous grading granite stones, apparent density 2750kg/m³, clay content 0.5%, Clod content 0.2%, elongated particles 7.0%, crush values 5.5%, compressive strength of rock 134Mpa.

Wherein fine aggregate is selected from natural river sand, and sand in category, fineness modulus 2.67, particle size distribution meets national standard 2nd area of natural sand requires in GB/T 14684-2011 " construction sand ", clay content 0.1%.

Wherein water-reducing agent is selected from Sika3301 type high performance water reducing agent of polyocarboxy acid, are mentioned by Sequa Corp of Switzerland For, solid content 50%, water-reducing rate 40% is good with cement and mineral admixture adaptability.

Wherein corrosion inhibitor is selected from compound alkamine reinforcing steel bar corrosion inhibitor, limited by Beijing Dechang great achievement architectural engineering technology Company provides, good with cement and mineral admixture adaptability.

A kind of preparation method of C120 high-strength concrete, the specific steps are as follows:

(1) raw material are accurately weighed by above-mentioned weight ratio, by cement, miberal powder, flyash, solid sulfur ash, silicon ash, thin bone Material, coarse aggregate, corrosion inhibitor are put into concrete mixer；

(2) water-reducing agent and water are mixed into the dilute solution containing water-reducing agent again；

(3) start blender, stirring 30s is uniformly mixed the material in blender first, then starts even into blender Above-mentioned dilute solution is added in speed, and dilute solution all adds time control in 15s, and continuing stirring 5min can be prepared by C120 high Reinforced concrete.

Embodiment 5:

A kind of C120 high-strength concrete, is made of following material: 475 parts of cement, 45 parts of flyash, 100 parts of miberal powder, solid sulphur Grey 65 parts, 30 parts of silicon ash, 1030 parts of coarse aggregate, 570 parts of fine aggregate, 5.6 parts of water-reducing agent, 11 parts of corrosion inhibitor, 140 parts of water, with weight Measure number meter.

Wherein cement is selected from 525 cement of P.O, is provided by Dujiang weir Lafarge Cement Co., Ltd, performance test results It is as follows: normal consistency water requirement 27.1%, specific surface area 373m²·kg^-1, presetting period 153min, final setting time 272min, 3 Its flexural strength 6.1MPa, 28 days flexural strengths 8.5MPa, 3 days compression strength 31.5MPa, 28 days compression strength 60.6MPa, SO₃Content 2.16% (≤3.5%), content of MgO 2.54% (≤5%), stability are qualified.

Wherein flyash is selected from I grade of flyash of original state F class, is provided by Sichuan Tie Run commerce and trade Co., Ltd, performance detection As a result as follows: normal consistency water requirement 23.2%, specific surface area 414m²·kg^-1, SO₃Content 1.2%, content of MgO 0.83%, 28 days compressive strength rates 93.1%.

Wherein miberal powder is selected from S95 grades of graining blast-furnace cinder micro-powders, is provided by Chengdu Tong Xin building materials Co., Ltd, performance inspection It is as follows to survey result: specific surface area 478m²·kg^-1, than 101%, 28 day compressive strength rate 99.5% of fluidity.

Wherein solid sulfur ash is selected from the solid sulfur ash by grinding processing, and original state solid sulfur ash is by Neijiang City in Sichuan Province Baima thermal power plant It provides, the performance test results of solid sulfur ash are as follows after grinding processing: normal consistency water requirement 37.9%, specific surface area are 735m²·kg^-1, SO₃Content 8.7%, content of MgO 2.74%, 28 days compressive strength rates 84.6%.Wherein, the solid sulfur ash Grinding processing method is as follows: weighing grinding 60min in original state solid sulfur ash investment 500 × 500mm of Φ cement testing ball mill.

Wherein silicon ash is selected from the silicon ash of high activity, is provided by Sichuan Hui Ye silicon ash Materials Co., Ltd, performance detection knot Fruit is as follows: SiO₂Content is 92.6%, specific surface area 22000m²·kg^-1, 28 days activity indexs are 121%.

Wherein coarse aggregate is selected from 5-20mm continuous grading granite stones, apparent density 2750kg/m³, clay content 0.5%, Clod content 0.2%, elongated particles 7.0%, crush values 5.5%, compressive strength of rock 134Mpa.

Wherein fine aggregate is selected from natural river sand, and sand in category, fineness modulus 2.67, particle size distribution meets national standard 2nd area of natural sand requires in GB/T 14684-2011 " construction sand ", clay content 0.1%.

Wherein water-reducing agent is selected from Sika3301 type high performance water reducing agent of polyocarboxy acid, are mentioned by Sequa Corp of Switzerland For, solid content 50%, water-reducing rate 40% is good with cement and mineral admixture adaptability.

Wherein corrosion inhibitor is selected from compound alkamine reinforcing steel bar corrosion inhibitor, limited by Beijing Dechang great achievement architectural engineering technology Company provides, good with cement and mineral admixture adaptability.

A kind of preparation method of C120 high-strength concrete, the specific steps are as follows:

(1) raw material are accurately weighed by above-mentioned weight ratio, by cement, miberal powder, flyash, solid sulfur ash, silicon ash, thin bone Material, coarse aggregate, corrosion inhibitor are put into concrete mixer；

(2) water-reducing agent and water are mixed into the dilute solution containing water-reducing agent again；

(3) start blender, stirring 30s is uniformly mixed the material in blender first, then starts even into blender Above-mentioned dilute solution is added in speed, and dilute solution all adds time control in 15s, and continuing stirring 5min can be prepared by C120 high Reinforced concrete.

The C120 high-strength concrete of Examples 1 to 5 preparation is subjected to performance with the C120 high-strength concrete without solid sulfur ash Compare, as a result as follows:

Remarks: the C120 high-strength concrete without solid sulfur ash is made of following material: 475 parts of cement, 60 parts of flyash, mine 140 parts of powder, 40 parts of silicon ash, 1030 parts of coarse aggregate, 570 parts of fine aggregate, 5.6 parts of water-reducing agent, 11 parts of corrosion inhibitor, 138 parts of water, with weight Measure number meter；Its composition material performance, preparation and application method are consistent in Examples 1 to 5.

By data in upper table it is found that under the same terms, comparison is free of the C120 high-strength concrete of solid sulfur ash, Examples 1 to 5 The C120 high-strength concrete of preparation has higher slump, divergence, compression strength, this shows the present invention using after grinding The gelling system that solid sulfur ash substitution part flyash, miberal powder and silicon ash make cement admixture building has better gelling, with The C120 high-strength concrete of this gelling system preparation has better working performance and mechanical property.

The above description is only a preferred embodiment of the present invention, is not intended to restrict the invention, for those skilled in the art For member, the invention may be variously modified and varied.Modification done within the spirit and principles of the present invention should all contain Within protection scope of the present invention.

Claims (10)

1. a kind of C120 high-strength concrete, it is characterised in that: be made of following material: 435-515 parts of cement, flyash 35-55 Part, 450-650 parts of fine aggregate, subtracts 90-110 parts of miberal powder, 55-75 parts of solid sulfur ash, 20-40 parts of silicon ash, 900-1100 parts of coarse aggregate 4.5-6.5 parts of aqua, 10-20 parts of corrosion inhibitor, 130-150 parts of water, based on parts by weight.

2. a kind of C120 high-strength concrete according to claim 1, it is characterised in that: be made of following material: cement 455-495 parts, 40-50 parts of flyash, 95-105 parts of miberal powder, 60-70 parts of solid sulfur ash, 25-35 parts of silicon ash, coarse aggregate 950-1050 Part, 500-600 parts of fine aggregate, 5-6 parts of water-reducing agent, 8-13 parts of corrosion inhibitor, 135-145 parts of water, based on parts by weight.

3. a kind of C120 high-strength concrete according to claim 2, it is characterised in that: be made of following material: cement 475 Part, 45 parts of flyash, 100 parts of miberal powder, 65 parts of solid sulfur ash, 30 parts of silicon ash, 1030 parts of coarse aggregate, 570 parts of fine aggregate, water-reducing agent 5.6 parts, 11 parts of corrosion inhibitor, 138 parts of water, based on parts by weight.

4. a kind of C120 high-strength concrete according to claim 3, it is characterised in that: the cement is selected from 525 water of P.O Mud, performance test results are as follows: normal consistency water requirement 27.1%, specific surface area 373m²·kg^-1, presetting period 153min, Final setting time 272min, 3 days flexural strength 6.1MPa, 28 days flexural strength 8.5MPa, 3 days compression strength 31.5MPa, 28 days anti- Compressive Strength 60.6MPa, SO₃Content 2.16%, content of MgO 2.54%, stability are qualified.

5. a kind of C120 high-strength concrete according to claim 3, it is characterised in that: the flyash is selected from original state F class I Grade flyash, performance test results are as follows: normal consistency water requirement 23.2%, specific surface area 414m²·kg^-1, SO₃Content 1.2%, content of MgO 0.83%, 28 days compressive strength rates 93.1%.

6. a kind of C120 high-strength concrete according to claim 2, it is characterised in that: the miberal powder is selected from S95 grades of granulations Blast-furnace cinder micro-powder, performance test results are as follows: specific surface area 478m²·kg^-1, than 101%, 28 day pressure resistance of fluidity Spend ratio 99.5%.

7. a kind of C120 high-strength concrete according to claim 1, it is characterised in that: the solid sulfur ash, which is selected from, passes through grinding The solid sulfur ash of processing, the performance test results of solid sulfur ash are as follows after grinding processing: normal consistency water requirement 37.9%, specific surface area For 735m²·kg^-1, SO₃Content 8.7%, content of MgO 2.74%, 28 days compressive strength rates 84.6%；The silicon ash is selected from high living The silicon ash of property, performance test results are as follows: SiO₂Content is 92.6%, specific surface area 22000m²·kg^-1, 28 days activity Index is 121%.

8. a kind of C120 high-strength concrete according to claim 1, it is characterised in that: the coarse aggregate connects selected from 5-20mm Continuous gradation basaltic broken stone, apparent density 2760kg/m³, clay content 0.5%, clod content 0.2%, elongated particles 6.5%, Crush values 4.7%, compressive strength of rock 175Mpa；Fine aggregate sand in natural river sand, category, fineness modulus 2.67, Particle size distribution meets 2nd area of natural sand in standard GB/T/T 14684-2011 " construction sand " and requires, clay content 0.1%.

9. a kind of C120 high-strength concrete according to claim 1, it is characterised in that: the water-reducing agent is selected from Sika3301 type high performance water reducing agent of polyocarboxy acid, solid content 50%, water-reducing rate 40%；The corrosion inhibitor is selected from multiple Mould assembly alkamine reinforcing steel bar corrosion inhibitor.

10. a kind of preparation method of C120 high-strength concrete according to claim 1, it is characterised in that: specific steps are such as Under:

(1) raw material are accurately weighed by above-mentioned weight ratio, by cement, miberal powder, flyash, solid sulfur ash, silicon ash, fine aggregate, thick In aggregate, corrosion inhibitor investment concrete mixer；

(2) water-reducing agent and water are mixed into the dilute solution containing water-reducing agent again；

(3) start blender, stirring 30-60s is uniformly mixed the material in blender first, then starts into blender at the uniform velocity Above-mentioned dilute solution is added, dilute solution all adds time control within the scope of 10-20s, and continuing stirring 3-5min can make Obtain C120 high-strength concrete.