CN103936347A - Ultra-high performance cement-based impact wear resistant material - Google Patents
Ultra-high performance cement-based impact wear resistant material Download PDFInfo
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- CN103936347A CN103936347A CN201410100489.XA CN201410100489A CN103936347A CN 103936347 A CN103936347 A CN 103936347A CN 201410100489 A CN201410100489 A CN 201410100489A CN 103936347 A CN103936347 A CN 103936347A
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Abstract
The invention relates to an ultra-high performance cement-based impact wear resistant material. By optimizing the grain gradation of a multi-element cementing material and the grain gradation of an aggregate, and using a water reducing agent and other chemical admixtures, the material provided by the invention can be employed to perform surface coating on a newly constructed concrete structure or an impact wear damaged old concrete structure, and the impact wear resistance of a hydraulic structure can be improved by means of the high impact wear resistance of the material itself and the good adhesion of a concrete substrate. The material has the technical advantages that: the impact wear resistance is significantly superior to that of ordinary concrete; the weatherability and durability are significantly superior to those of an organic impact wear resistant coating material; by optimizing the grain gradation of the cementing material and the grain gradation of the aggregate, the material can meet the construction liquidity requirements under a low water-binder ratio; under standard curing conditions, the material can reach high strength of more than 150MPa after 28 days; and the anti-permeability, carbonization resistance, chloride ion penetration resistance, freezing-thawing cycle resistance and other properties are superior to those of ordinary concrete.
Description
Technical field
The invention belongs to concrete technology field, relate to ultrahigh-performance cement-based anti-impact mill material.
Background technology
Result according to Multitest research both at home and abroad and the investigation of actual Hydraulic and Hydro-Power Engineering shows, the effects such as impact, friction and the cutting of high-velocity & sediment-laden flow to hydraulic structure, the wear-out failure that causes hydraulic structure surface is one of Hydraulic and Hydro-Power Engineering Major Diseases in service.Under high velocity flow effect, the large traction load sandstone of particle diameter and the suspended sediment of small particle size are to destructions such as the impact of waterwork deposits yields, friction and cuttings, cause top layer concrete big area to be degraded, this not only needs the renewal expense of both expensive, and directly affects the normal operation of engineering.Alleviate or to prevent that traction load and suspended load from galling rushing of hydraulic structure bad, can set about from two aspects: the one, optimizing project is arranged and engineering structure, is made as far as possible current straight; The 2nd, adopt the good material of resistance to impact and abrasion at the overcurrent position of hydraulic structure.The ultrahigh-performance cement-based anti-impact mill material the present invention relates to is by newly-built concrete structure or be subject to punching to gall bad old concrete structure to carry out surface-coated, improve the anti-impact mill performance of hydro-structure with the high-impact mill performance of material self and with the bonds well of concrete substrate, cement-based material has been avoided the shortcomings such as the weather-proof loss of properties on aging of organic materials simultaneously, has good using value.
Summary of the invention
The object of this invention is to provide a kind of ultrahigh-performance cement-based anti-impact mill material, grain composition by the grain composition to polynary gelling material and aggregate is optimized, and by the use of the chemical admixtures such as water reducer, make material or be subject to punching to gall bad old concrete structure to newly-built concrete structure and carry out surface-coated, improve the anti-impact mill performance of hydro-structure with the high-impact mill performance of material self and with the bonds well of concrete substrate.
Ultrahigh-performance cement-based anti-impact mill material of the present invention, comprise gelling material, fine aggregate, admixture and water, it is characterized in that: described gelling material is cement and mineral admixture, described cement is that strength grade is 42.5 and above PI, PII or PO code name cement; The present invention is not precluded within particular cases, uses the cement of other types to be prepared high-performance cement-based anti-impact mill material according to method of the present invention; Described mineral admixture is two or three combination of materials of silicon ash, flyash or breeze; Fine aggregate is the combination of natural sand, artificial sand or polytype sand;
Wherein, cement consumption accounts for 10～50% of ultrahigh-performance cement-based anti-impact mill material volume, and described mineral admixture accounts for 10～40% of ultrahigh-performance cement-based anti-impact mill material volume; Described fine aggregate accounts for 20～70% of ultrahigh-performance cement-based anti-impact mill material volume;
After mixing and stirring by the ultrahigh-performance cement-based anti-impact mill material that calculates the preparation of gained proportioning, flowability properties is as follows:
Denseness JGJ/T70:20～145mm
After hardened material, performance is as follows:
Ultimate compression strength, normal curing 28d: >=150MPa;
Ring method anti-impact mill intensity DL/T5150:>=1.6h/ (g/cm
2)
Steel ball method anti-impact mill intensity DL/T5150:>=80.0h/ (kg/m
2)
The particle diameter cumulative distribution curve that the proportioning mark of described gelling material and the each component of fine aggregate is piled up curve and each material component by ideal carries out numerical analysis;
1) the described desirable curve equation of piling up is:
p
s=A１００A·d/Dm/；
Wherein, Psd be particle by the per-cent of sieve aperture, A is empirical constant, d is sieve diameter, D
maxfor the maximum particle diameter of particle;
The value of empirical constant A requires to determine by formula according to the degree of mobilization of ultrahigh-performance cement-based anti-impact mill material:
A=5·C/，
C is denseness design load, C
0for the height 145mm of examination cone;
2) the particle diameter cumulative distribution curve of each component:
To component cement required in gelling material, silicon ash, flyash, breeze and 1# fine aggregate, 2# fine aggregate ... with n# fine aggregate, after tested obtain cumulative distribution curve f separately
c(d), f
sf(d), f
fa(d), f
bs(d), f
s1(d), f
s2(d) ... and f
sn(d), n=1～5;
3) numerical analysis is as follows:
If it is X that cement accounts for the volume fraction of gelling material and aggregate total amount
c, the silicon ash volume fraction that accounts for gelling material and aggregate total amount is X
sf, the flyash volume fraction that accounts for gelling material and aggregate total amount is X
fa, the breeze volume fraction that accounts for gelling material and aggregate total amount is X
bs, the volume fraction that 1# fine aggregate accounts for gelling material and aggregate total amount is X
s1, the 2# fine aggregate volume fraction that accounts for gelling material and aggregate total amount is X
s2... the volume fraction that n# fine aggregate accounts for gelling material and aggregate total amount is X
sn, and meet X
c∈ [0.111,0.556], (X
sf+ X
fa+ X
bs) ∈ [0.111,0.444], Σ X
sn∈ [0.222,0.778], X
c+ X
sf+ X
fa+ X
bs+ Σ X
sn=1;
Setting the particle diameter cumulative distribution curve of material after mixing is:
P=X
cf
c(d)+X
sff
sf(d)+X
faf
fa(d)+X
bs?f
bs(d)+X
s1f
s1(d)+X
s2f
s2(d)+…+X
sn?
fsn(d)
To the volume fraction X of each component
c, X
sf, X
fa, X
bs, X
s1, X
s2... and X
sntaking 0.001～0.01 as step-length, exhaustive computations P in span separately, comparison curves P and P
sd, calculate the standard deviation of the corresponding X-coordinate particle diameter of identical ordinate zou d, get the X of standard deviation minimum
c, X
sf, X
fa, X
bs, X
s1, X
s2... and X
snvalue is as each component proportion mark of gelling material.In the time using two kinds of mineral admixtures, need to omit corresponding massfraction and the distribution curve of adulterant that there is no use; Fine aggregate calculates with actual kind quantity;
The filler of corresponding non-gelling activity, as stone flour, because its particle diameter drops on the particle size interval of adulterant substantially, in the time that some occasion need to be used, can carry out volume calculated mark according to the method for calculation of above-mentioned mineral admixture;
The mass ratio W/B of the consumption of water and gelling material is 0.1～0.4, and wherein W represents the consumption of water, and B represents gelling material quality;
After mixing and stirring by the ultrahigh-performance cement-based anti-impact mill material that calculates the preparation of gained proportioning, flowability properties is as follows:
Denseness JGJ/T70:20～145mm
After hardened material, performance is as follows:
Ultimate compression strength, normal curing 28d: >=150MPa;
Ring method anti-impact mill intensity DL/T5150:>=1.6h/ (g/cm
2)
Steel ball method anti-impact mill intensity DL/T5150:>=80.0h/ (kg/m
2)
As preferred technical scheme:
Ultrahigh-performance cement-based anti-impact mill material as above, described ordinate zou is chosen according to maximum value 100% decile, at least gets 5 values.
Ultrahigh-performance cement-based anti-impact mill material as above, described W/B is 0.12 to 0.28.
Ultrahigh-performance cement-based anti-impact mill material as above, described cement meets GB " general purpose portland cement " GB175; Described silicon ash meets " mortar and the reinforcement of concrete silicon ash " GB/T27690; Described flyash meets " for cement and concrete flyash " GB/T1596; Described breeze meets " for the GBFS of cement and concrete " GB/T18046; Water meets " the reinforcement of concrete water quality standard " JGJ63.
Fine aggregate is natural sand or artificial sand, and fineness modulus is 1.2～3.5, and tap density is 1.1～2.1g/cm
3; Apparent density is 1.8～3.0g/cm
3.
Ultrahigh-performance cement-based anti-impact mill material as above, the fineness modulus of described fine aggregate is 2.4～2.8.
Ultrahigh-performance cement-based anti-impact mill material as above, is characterized in that, described fine aggregate is quartz sand or silicon carbide.
Ultrahigh-performance cement-based anti-impact mill material as above, it is characterized in that, described admixture is water reducer, defoamer, thickening material, hardening accelerator, retardant, one or several the combination of economization agent and swelling agent, water reducer is selected more than 25% water reducer of water-reducing rate, volume is 0.5%～5% of described gelling material quality, defoamer volume is 0.08%～2% of gelling material quality, thickening material volume is 0.005%～0.5% of gelling material quality, hardening accelerator volume is 0.01～5% of gelling material quality, retardant volume is cement material quality 0.005%～1.5%, economization agent volume is 0.1%～5% of gelling material quality, expansive agent dosage is 1～10% of gelling material quality.
Water reducer mainly comprises polycarboxylic acid concrete superplasticizer, does not also get rid of the superplasticizer that other can promote that gelling material is disperseed.Described water reducer can comprise solution form and solid form.
Defoamer mainly comprises the defoamer of the types such as polyethers, high-carbon alcohols, silicone based, polyether-modified silicon.Described defoamer can comprise solution form, solid form or preferred resin form, oily form or emulsion form.
Thickening material mainly comprises derivatived cellulose, as methylcellulose gum, Walocel MT 20.000PV, ethyl cellulose, Natvosol; Natural polymer and derivative thereof, as starch, gelatin, sodium alginate, casein food grade, guar gum, chitosan, Sudan Gum-arabic, xanthan gum; Inorganic thickening agent, as sodium bentonite, diatomite; Synthetic polymer, as polypropylene milling amine, modified paraffin resin, polyacrylic acid.Can use the mixture of above reagent.
Hardening accelerator mainly comprises: sodium salt, calcium salt and organism, and as trolamine, urea.
Retardant mainly comprises: polyol, hydroxycarboxylate and derivative thereof, high sugared sulfonated lignin.
Economization agent mainly comprises: lower alcohol alkylidene group epoxy compounds, polyalcohols and polyethers.
Swelling agent mainly comprises: alunite class, calcium sulphoaluminate class, calcium oxide, calcium oxide-calcium sulphoaluminate complex class.
Ultrahigh-performance cement-based anti-impact mill material as above, the water-reducing rate of described water reducer is more than 30%, volume is 0.8%～3% of described gelling material quality.
Ultrahigh-performance cement-based anti-impact mill material as above, in described ultrahigh-performance cement-based anti-impact mill material, also add fiber, described fiber is steel fiber or non-metallic fibers, non-metallic fibers is polyvinyl alcohol fiber, polyethylene fibre, polypropylene fibre, polyacrylonitrile fibre, trevira, nylon fiber, cellulosic fibre, carbon fiber, glass fibre or basalt fibre, accounts for 0.05%～5% of described ultrahigh-performance cement-based anti-impact mill material volume; The diameter of described fiber is 15～1000 μ m, and staple length is 1～100mm.
Ultrahigh-performance cement-based anti-impact mill material as above, when constructing in the anti-impact grinding concrete structure of newly building, complete after building and rush a hair operation with water blast gun in 72 hours at the concrete of newly building, hydraulic giant pressure and concrete surface strength ratio are controlled at 2.0 ± 0.2.After punching hair according to the difference of construction part by anti-impact mill material good mixing can be by spraying, trowel blade coating or the levelling method such as build constructs.
Ultrahigh-performance cement-based anti-impact mill material as above, while construction in original anti-impact grinding concrete structure of repairing at needs, the concrete surface that needs are repaired adopts pneumatic pick to cut certain depth, exposes fresh concrete surface; Concrete surface is rinsed well with water blast gun; Then according to the difference of construction part, anti-impact good mixing is ground to material by injection, trowel blade coating or built the methods such as levelling and construct.
Beneficial effect:
(1) anti-impact mill performance is significantly better than normal concrete;
(2) weathering resistance of inorganic materials, weather resistance are significantly better than organic anti-impact mill coated material;
(3) reach by optimizing the grain composition of gelling material grain composition and aggregate the requirement that meets construction mobility under low water binder ratio;
(4), under the condition of normal curing, reach high strength more than 150MPa the 28 day length of time;
(5) due to closestpacking design, the performances such as anti-permeability performance, anti-carbonation properties, chloride-penetration resistance, freeze-thaw-circulation are better than normal concrete.
Embodiment
Below in conjunction with embodiment, further set forth the present invention.Should be understood that these embodiment are only not used in and limit the scope of the invention for the present invention is described.In addition should be understood that those skilled in the art can make various changes or modifications the present invention after having read the content of the present invention's instruction, these equivalent form of values fall within the application's appended claims limited range equally.
Embodiment 1
Ultrahigh-performance cement-based anti-impact mill material, comprises gelling material, fine aggregate, water and water reducer, and described cement is that strength grade is 52.5 PI cement, and described mineral admixture is silicon ash and flyash, the natural special fine sand that the fine aggregate of use is fineness modulus 1.4.
The proportioning mark of cement, silicon ash, flyash and fine aggregate piles up curve by ideal and its particle diameter cumulative distribution curve carries out numerical analysis;
1) the described desirable curve equation of piling up is:
P
sd=100·／m/；
Wherein, P
sdfor particle is by the per-cent of sieve aperture, A is empirical constant, and d is sieve diameter, D
maxfor the maximum particle diameter of particle;
The value of empirical constant A requires to determine by formula according to the denseness of ultrahigh-performance cement-based anti-impact mill material:
Denseness JGJ/T70:90mm; The height C of slump bucket
0for 145mm;
A＝5·C/C=3.103；
In material, the maximum particle diameter of special fine sand is greater than other three kinds of materials, so D
maxget the maximum particle diameter 1180 of special fine sand
μm;
2) the particle diameter cumulative distribution curve of gelling material and the each component of fine aggregate:
To cement, silicon ash, flyash and special fine sand after tested obtain cumulative distribution curve f separately
c(d), f
sf(d), f
faand f (d)
s1(d);
3) numerical analysis is as follows:
If it is X that cement accounts for the volume fraction of gelling material and fine aggregate total amount
c, the silicon ash volume fraction that accounts for gelling material and fine aggregate total amount is X
sf, the flyash volume fraction that accounts for gelling material and fine aggregate total amount is X
fa, the special fine sand volume fraction that accounts for gelling material and fine aggregate total amount is X
s1, and meet X
c∈ [0.111,0.556], (X
sf+ X
fa) ∈ [0.111,0.444], X
s1∈ [0.222,0.778], X
c+ X
sf+ X
fa+ X
s1=1;
Setting the particle diameter cumulative distribution curve of material after mixing is:
P=X
cf
c(d)+X
sff
sf(d)+X
faf
fa(d)+X
s1f
s1(d)；
To the volume fraction X of each component
c, X
sf, X
faand X
s1taking 0.001 as step-length, exhaustive computations P in span separately, comparison curves P and P
sd, calculate the standard deviation of the corresponding X-coordinate particle diameter of identical ordinate zou d, relatively obtain as calculated the X of standard deviation minimum
c=0.143, X
sf=0.078, X
fa=0.364, X
s1=0.416 respectively as the proportioning mark of cement, silicon ash, flyash and special fine sand;
The mass ratio W/B of the consumption of water and gelling material is 0.175, and wherein W represents the consumption of water, and B represents gelling material quality.
Use polycarboxylate water-reducer, pulvis, water-reducing rate 30%, consumption is gelling material 1.75%.
The consumption of main materials of ultrahigh-performance cement-based anti-impact mill material, volume percent is as follows:
Each material usage of ultrahigh-performance cement-based anti-impact mill material, mass ratio is as follows:
After mixing and stirring by the ultrahigh-performance cement-based anti-impact mill material that calculates the preparation of gained proportioning, flowability properties is as follows:
Denseness JGJ/T70:90mm
After hardened material, performance is as follows:
Ultimate compression strength, normal curing 28d:157MPa;
Ring method anti-impact mill intensity DL/T5150:1.7h/ (g/cm
2)
Steel ball method anti-impact mill intensity DL/T5150:86.3h/ (kg/m
2)
The spillway that this engineering anti-impact mill position is power station, after the spillway concrete placement 48h newly building, form removal water blast gun rushes hair, ultrahigh-performance cement-based anti-impact mill material mixing at the scene, and spray floating construction technology, coating thickness is about 1.5cm.
Embodiment 2
Ultrahigh-performance cement-based anti-impact mill material, comprise gelling material, fine aggregate, water, water reducer and defoamer, described cement is that strength grade is 52.5 PII cement, described mineral admixture is silicon ash and breeze, the thin natural sand of spy that the fine aggregate of use is fineness modulus 1.4 and the thin artificial sand of spy of fineness modulus 1.2.The account form that each component proportion mark of gelling material and aggregate is pressed embodiment 1, obtains X
c=0.598, X
sf=0.091, X
bs=0.086, X
s1=0.108 and X
s2=0.117.Water-cement ratio W/B=0.131, admixture uses polycarboxylate water-reducer solution, and volume is 1.2% of gelling material quality, uses silicone antifoam agent, and volume is 0.1% of gelling material quality.
The consumption of main materials of ultrahigh-performance cement-based anti-impact mill material, volume percent is as follows:
Each material usage of ultrahigh-performance cement-based anti-impact mill material, mass ratio is as follows:
After mixing and stirring by the ultrahigh-performance cement-based anti-impact mill material that calculates the preparation of gained proportioning, flowability properties is as follows:
Denseness JGJ/T70:85mm
After hardened material, performance is as follows:
Ultimate compression strength, normal curing 28d:189MPa;
Ring method anti-impact mill intensity DL/T5150:2.2h/ (g/cm
2)
Steel ball method anti-impact mill intensity DL/T5150:105.1h/ (kg/m
2)
This engineering is for repairing former anti-impact mill position stilling basin, and the concrete surface that needs are repaired adopts pneumatic pick to cut certain depth, exposes fresh concrete surface, and then concrete surface is rinsed well with water blast gun.Ultrahigh-performance cement-based anti-impact mill material mixing at the scene, and carry out trowel and be coated with floating construction technology, coating thickness is about 2.0cm.
Embodiment 3
Ultrahigh-performance cement-based anti-impact mill material, comprise gelling material, fine aggregate, fiber, water, water reducer, economization agent, described cement is that strength grade is 62.5 PII cement, described mineral admixture is silicon ash, flyash and breeze, the fine aggregate using is 10～20 object 1# quartz sands, 20～40 object 2# quartz sands and 40～80 object 3# quartz sands.The account form that each component proportion mark of gelling material and aggregate is pressed embodiment 1, obtains X
c=0.139, X
sf=0.063, Xfa=0.063, X
bs=0.049, X
s1=2.141, X
s2=1.147 and X
s3=0.918.Water-cement ratio W/B=0.269, fiber uses diameter 40 μ m, the polyvinyl alcohol fiber of length 12mm, volume volume is 0.1%, and water reducer uses polycarboxylate water-reducer solution, and volume is 1.2% of gelling material quality, use polyalcohols economization agent, volume is 0.2% of gelling material quality.
The consumption of main materials of ultrahigh-performance cement-based anti-impact mill material, volume percent is as follows:
Each material usage of ultrahigh-performance cement-based anti-impact mill material, mass ratio is as follows:
After mixing and stirring by the ultrahigh-performance cement-based anti-impact mill material that calculates the preparation of gained proportioning, flowability properties is as follows:
Denseness JGJ/T70:125mm
After hardened material, performance is as follows:
Ultimate compression strength, normal curing 28d:161MPa;
Ring method anti-impact mill intensity DL/T5150:1.7h/ (g/cm
2)
Steel ball method anti-impact mill intensity DL/T5150:88.9h/ (kg/m
2)
The emptying tunnel that this engineering anti-impact mill position is power station rush hair with water blast gun after the concrete placement 48h newly building, and ultrahigh-performance cement-based anti-impact is ground material mixing at the scene, and carries out trowel and be coated with floating construction technology, and coating thickness is about 1.5cm.
Claims (10)
1. ultrahigh-performance cement-based anti-impact mill material, comprise gelling material, fine aggregate, admixture and water, it is characterized in that: described gelling material is cement and mineral admixture, described cement is that strength grade is 42.5 and above PI, PII or PO code name cement, and described mineral admixture is two or three combination of materials of silicon ash, flyash or breeze; Fine aggregate is the combination of natural sand, artificial sand or polytype sand;
Wherein, cement consumption accounts for 10～50% of ultrahigh-performance cement-based anti-impact mill material volume, and described mineral admixture accounts for 10～40% of ultrahigh-performance cement-based anti-impact mill material volume; Described fine aggregate accounts for 20～70% of ultrahigh-performance cement-based anti-impact mill material volume;
The particle diameter cumulative distribution curve that the proportioning mark of described gelling material and the each component of fine aggregate is piled up curve and each material component by ideal carries out numerical analysis;
1) the described desirable curve equation of piling up is:
P
sd=100·／m/；
Wherein, P
sdfor particle is by the per-cent of sieve aperture, A is empirical constant, and d is sieve diameter, D
maxfor the maximum particle diameter of particle;
The value of empirical constant A requires to determine by formula according to the degree of mobilization of ultrahigh-performance cement-based anti-impact mill material:
A=5·Ｃ/；
C is denseness design load, C
0for the height 145mm of examination cone;
2) the particle diameter cumulative distribution curve of each component:
To component cement required in gelling material, silicon ash, flyash, breeze and 1# fine aggregate, 2# fine aggregate ... with n# fine aggregate, after tested obtain cumulative distribution curve f separately
c(d), f
sf(d), f
fa(d), f
bs(d), f
s1(d), f
s2(d) ... and f
sn(d), n=1～5;
3) numerical analysis is as follows:
If it is X that cement accounts for the volume fraction of gelling material and aggregate total amount
c, the silicon ash volume fraction that accounts for gelling material and aggregate total amount is X
sf, the flyash volume fraction that accounts for gelling material and aggregate total amount is X
fa, the breeze volume fraction that accounts for gelling material and aggregate total amount is X
bs, the volume fraction that 1# fine aggregate accounts for gelling material and aggregate total amount is X
s1, the 2# fine aggregate volume fraction that accounts for gelling material and aggregate total amount is X
s2... the volume fraction that n# fine aggregate accounts for gelling material and aggregate total amount is X
sn, and meet X
c∈ [0.111,0.556], (X
sf+ X
fa+ X
bs) ∈ [0.111,0.444], Σ X
sn∈ [0.222,0.778], X
c+ X
sf+ X
fa+ X
bs+ Σ X
sn=1;
Setting the particle diameter cumulative distribution curve of material after mixing is:
P=X
cf
c(d)+X
sff
sf(d)+X
faf
fa(d)+X
bs?f
bs(d)+X
s1f
s1(d)+X
s2f
s2(d)+…+X
sn?f
sn(d)，
To the volume fraction X of each component
c, X
sf, X
fa, X
bs, X
s1, X
s2... and X
sntaking 0.001～0.01 as step-length, exhaustive computations P in span separately, comparison curves P and P
sd, calculate the standard deviation of the corresponding X-coordinate particle diameter of identical ordinate zou d, get the X of standard deviation minimum
c, X
sf, X
fa, X
bs, X
s1, X
s2... and X
snvalue is as each component proportion mark of gelling material;
The mass ratio W/B of the consumption of water and gelling material is 0.1～0.4, and wherein W represents the consumption of water, and B represents gelling material quality;
After mixing and stirring by the ultrahigh-performance cement-based anti-impact mill material that calculates the preparation of gained proportioning, flowability properties is as follows:
Denseness JGJ/T70:20～145mm;
After hardened material, performance is as follows:
Ultimate compression strength, normal curing 28d: >=150MPa;
Ring method anti-impact mill intensity DL/T5150:>=1.6h/ (g/cm
2);
Steel ball method anti-impact mill intensity DL/T5150:>=80.0h/ (kg/m
2).
2. ultrahigh-performance cement-based anti-impact mill material according to claim 1, is characterized in that, described ordinate zou is chosen according to maximum value 100% decile, at least gets 5 values.
3. ultrahigh-performance cement-based anti-impact mill material according to claim 1, is characterized in that, described W/B is 0.12 to 0.28.
4. ultrahigh-performance cement-based anti-impact mill material according to claim 1, is characterized in that, described cement meets GB " general purpose portland cement " GB175; Described silicon ash meets " mortar and the reinforcement of concrete silicon ash " GB/T27690; Described flyash meets " for cement and concrete flyash " GB/T1596; Described breeze meets " for the GBFS of cement and concrete " GB/T18046; Water meets " the reinforcement of concrete water quality standard " JGJ63.
5. ultrahigh-performance cement-based anti-impact mill material according to claim 1, is characterized in that, the fineness modulus of described fine aggregate is 1.2～3.5, tap density>=1.1g/cm
3; Apparent density is>=1.8g/cm
3; Described fine aggregate is quartz sand or silicon carbide, and the fineness modulus of described fine aggregate is 2.4～2.8.
6. ultrahigh-performance cement-based anti-impact mill material according to claim 1, it is characterized in that, described admixture agent is one or several the combination of water reducer, defoamer, thickening material, hardening accelerator, retardant or economization agent, water reducer is selected more than 25% water reducer of water-reducing rate, volume is 0.5%～5% of described gelling material quality, defoamer volume is 0.08%～2% of gelling material, thickening material volume is 0.005%～0.5% of gelling material, retardant volume is cement material 0.005%～1.5%, and economization agent volume is gelling material 0.1%～5%.
7. ultrahigh-performance cement-based anti-impact mill material according to claim 1, is characterized in that, the water-reducing rate of described water reducer is more than 30%, and volume is 0.5%～3% of described gelling material quality.
8. ultrahigh-performance cement-based anti-impact mill material according to claim 1, it is characterized in that, in described ultrahigh-performance cement-based anti-impact mill material, also add fiber, described fiber is steel fiber or non-metallic fibers, non-metallic fibers is polyvinyl alcohol fiber, polyethylene fibre, polypropylene fibre, polyacrylonitrile fibre, trevira, nylon fiber, cellulosic fibre, carbon fiber, glass fibre or basalt fibre, accounts for 0.05%～5% of described ultrahigh-performance cement-based anti-impact mill material volume; The diameter of described fiber is 15～1000 μ m, and staple length is 1～100mm.
9. the constructional method of ultrahigh-performance cement-based anti-impact mill material as claimed in claim 1, it is characterized in that: while construction in the anti-impact grinding concrete structure of newly building, complete after building and rush a hair operation with water blast gun in 72 hours at the concrete of newly building, hydraulic giant pressure and concrete surface strength ratio are controlled at 2.0 ± 0.2; After punching hair according to the difference of construction part by anti-impact mill material good mixing can be by spraying, trowel blade coating or the levelling method such as build constructs.
10. the constructional method of ultrahigh-performance cement-based anti-impact mill material according to claim 9, it is characterized in that, while construction in original anti-impact grinding concrete structure of repairing at needs, the concrete surface that needs are repaired adopts pneumatic pick to cut certain depth, exposes fresh concrete surface; Concrete surface is rinsed well with water blast gun; Then according to the difference of construction part, anti-impact good mixing is ground to material by injection, trowel blade coating or built the methods such as levelling and construct.
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