CN109020400A - A kind of C70 high-strength concrete and preparation method thereof - Google Patents
A kind of C70 high-strength concrete and preparation method thereof Download PDFInfo
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- CN109020400A CN109020400A CN201811078400.9A CN201811078400A CN109020400A CN 109020400 A CN109020400 A CN 109020400A CN 201811078400 A CN201811078400 A CN 201811078400A CN 109020400 A CN109020400 A CN 109020400A
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- flyash
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- 239000011372 high-strength concrete Substances 0.000 title claims abstract description 56
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 239000002956 ash Substances 0.000 claims abstract description 115
- 239000007787 solid Substances 0.000 claims abstract description 112
- NINIDFKCEFEMDL-UHFFFAOYSA-N sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 109
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 106
- 239000011593 sulfur Substances 0.000 claims abstract description 106
- 239000010881 fly ash Substances 0.000 claims abstract description 83
- 239000000843 powder Substances 0.000 claims abstract description 81
- 239000004568 cement Substances 0.000 claims abstract description 80
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 59
- 239000003638 reducing agent Substances 0.000 claims abstract description 43
- 239000004567 concrete Substances 0.000 claims abstract description 42
- 239000000463 material Substances 0.000 claims abstract description 42
- 238000005260 corrosion Methods 0.000 claims abstract description 38
- 239000003112 inhibitor Substances 0.000 claims abstract description 37
- 230000002401 inhibitory effect Effects 0.000 claims abstract description 37
- 238000007906 compression Methods 0.000 claims abstract description 19
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 44
- 239000002245 particle Substances 0.000 claims description 35
- 239000004576 sand Substances 0.000 claims description 34
- 238000000227 grinding Methods 0.000 claims description 33
- AKEJUJNQAAGONA-UHFFFAOYSA-N sulfur trioxide Inorganic materials O=S(=O)=O AKEJUJNQAAGONA-UHFFFAOYSA-N 0.000 claims description 22
- 239000004927 clay Substances 0.000 claims description 16
- 229910052570 clay Inorganic materials 0.000 claims description 16
- 238000003756 stirring Methods 0.000 claims description 14
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 11
- 239000010438 granite Substances 0.000 claims description 11
- 239000004575 stone Substances 0.000 claims description 11
- 238000011056 performance test Methods 0.000 claims description 10
- 238000010276 construction Methods 0.000 claims description 9
- 239000002253 acid Substances 0.000 claims description 8
- 239000003795 chemical substances by application Substances 0.000 claims description 8
- 238000009826 distribution Methods 0.000 claims description 8
- 239000011435 rock Substances 0.000 claims description 8
- 239000002994 raw material Substances 0.000 claims description 7
- 239000002893 slag Substances 0.000 claims description 6
- 230000003179 granulation Effects 0.000 claims 1
- 239000000203 mixture Substances 0.000 abstract description 9
- 230000000694 effects Effects 0.000 description 25
- 229910052500 inorganic mineral Inorganic materials 0.000 description 23
- 239000011707 mineral Substances 0.000 description 23
- 230000003334 potential Effects 0.000 description 13
- 239000000126 substance Substances 0.000 description 13
- 238000001514 detection method Methods 0.000 description 12
- 239000011398 Portland cement Substances 0.000 description 10
- 210000000988 Bone and Bones Anatomy 0.000 description 9
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium monoxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 9
- 150000001875 compounds Chemical group 0.000 description 9
- 238000006703 hydration reaction Methods 0.000 description 9
- 241000196324 Embryophyta Species 0.000 description 8
- 239000011575 calcium Substances 0.000 description 8
- 230000036571 hydration Effects 0.000 description 8
- QAOWNCQODCNURD-UHFFFAOYSA-L sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 8
- PNEYBMLMFCGWSK-UHFFFAOYSA-N AI2O3 Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 7
- 230000004913 activation Effects 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 7
- 235000004863 Fevillea cordifolia Nutrition 0.000 description 6
- 240000007307 Fevillea cordifolia Species 0.000 description 6
- 239000003818 cinder Substances 0.000 description 6
- 235000013399 edible fruits Nutrition 0.000 description 6
- 230000002708 enhancing Effects 0.000 description 6
- 238000007689 inspection Methods 0.000 description 6
- 238000003672 processing method Methods 0.000 description 6
- 239000011150 reinforced concrete Substances 0.000 description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 6
- 239000010703 silicon Substances 0.000 description 6
- 229910052710 silicon Inorganic materials 0.000 description 6
- 238000005303 weighing Methods 0.000 description 6
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L Calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 5
- 229910052925 anhydrite Inorganic materials 0.000 description 5
- 239000000292 calcium oxide Substances 0.000 description 5
- 238000006116 polymerization reaction Methods 0.000 description 5
- 239000002910 solid waste Substances 0.000 description 5
- AIRCTMFFNKZQPN-UHFFFAOYSA-N Aluminium(II) oxide Chemical compound [Al]=O AIRCTMFFNKZQPN-UHFFFAOYSA-N 0.000 description 4
- 239000003513 alkali Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 239000010430 carbonatite Substances 0.000 description 4
- 238000005755 formation reaction Methods 0.000 description 4
- 239000008187 granular material Substances 0.000 description 4
- 239000005864 Sulphur Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 239000003245 coal Substances 0.000 description 3
- 230000005284 excitation Effects 0.000 description 3
- 239000003292 glue Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 210000002381 Plasma Anatomy 0.000 description 2
- 239000012190 activator Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 230000015271 coagulation Effects 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 150000004683 dihydrates Chemical class 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 239000000499 gel Substances 0.000 description 2
- 239000010440 gypsum Substances 0.000 description 2
- 229910052602 gypsum Inorganic materials 0.000 description 2
- 238000010348 incorporation Methods 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 239000003469 silicate cement Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 229940091292 Alo Drugs 0.000 description 1
- JHLNERQLKQQLRZ-UHFFFAOYSA-N Calcium silicate Chemical compound [Ca+2].[Ca+2].[O-][Si]([O-])([O-])[O-] JHLNERQLKQQLRZ-UHFFFAOYSA-N 0.000 description 1
- 206010011376 Crepitations Diseases 0.000 description 1
- 235000002918 Fraxinus excelsior Nutrition 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- 229920002521 Macromolecule Polymers 0.000 description 1
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 229910018557 Si O Inorganic materials 0.000 description 1
- 210000002356 Skeleton Anatomy 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- SMYKVLBUSSNXMV-UHFFFAOYSA-J aluminum;tetrahydroxide Chemical compound [OH-].[OH-].[OH-].[OH-].[Al+3] SMYKVLBUSSNXMV-UHFFFAOYSA-J 0.000 description 1
- 230000003487 anti-permeability Effects 0.000 description 1
- 230000000903 blocking Effects 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000000378 calcium silicate Substances 0.000 description 1
- 229910052918 calcium silicate Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 239000010883 coal ash Substances 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- AVXURJPOCDRRFD-UHFFFAOYSA-N hydroxylamine Chemical compound ON AVXURJPOCDRRFD-UHFFFAOYSA-N 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- LIKBJVNGSGBSGK-UHFFFAOYSA-N iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Fe+3].[Fe+3] LIKBJVNGSGBSGK-UHFFFAOYSA-N 0.000 description 1
- 235000015110 jellies Nutrition 0.000 description 1
- 239000008274 jelly Substances 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N oxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 229910052904 quartz Inorganic materials 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N silicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 239000005368 silicate glass Substances 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Inorganic materials [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 1
- -1 silicon oxygen Chemical compound 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 125000001273 sulfonato group Chemical group [O-]S(*)(=O)=O 0.000 description 1
- 230000002522 swelling Effects 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
- 229910021489 α-quartz Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00017—Aspects relating to the protection of the environment
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
Abstract
The invention belongs to concrete fields, specifically disclose a kind of C70 high-strength concrete and preparation method thereof, the concrete is made of following material: 365-415 parts of cement, 70-90 parts of miberal powder, 25-35 parts of flyash, 40-60 parts of solid sulfur ash, 950-1100 parts of coarse aggregate, 650-800 parts of fine aggregate, 3-4.5 parts of water-reducing agent, 5-12 parts of corrosion inhibitor, 125-145 parts of water, based on parts by weight.The present invention provides a kind of C70 high-strength concretes, the concrete has good slump, divergence and compression strength, excellent combination property, while the conventional cements admixture shortage of resources such as overcome miberal powder, flyash and solid sulfur ash utilization approaches are limited, utilization rate is low problem.
Description
Technical field
The invention belongs to concrete fields, specifically disclose a kind of C70 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, is reached and is reduced cement industry production energy consumption, the discharge of pollution exhaust gas and reduce concrete production cost etc.
Purpose；Outside except this, the incorporation of miberal powder, flyash, silicon ash etc. generally can also improve the mechanical property, anticorrosive, anti-of concrete
Jelly property, durability etc., action principle be mainly utilize the Micro-aggregate filling effect of the Industrial Solid Wastes such as slag micropowder, flyash with
Potential pozzolanic activity.However, as economic construction of China high speed development, construction scale are constantly expanded, miberal powder, flyash, silicon
The problems such as conventional cements such as ash admixture also increasingly faces shortage of resources, quality of supplying seriously glides, usually causes coagulation soil nature
It can undesirable consequence.Therefore, it if the Industrial Solid Waste that can develop other classes makees cement admixture, and can substitute to a certain degree or completely
It substitutes above-mentioned traditional industry solid waste and prepares high-strength concrete, then can not only alleviate the resources such as miberal powder, flyash, silicon ash worsening shortages
The problem of, while can also enrich the resource utilization approach of other class Industrial Solid Wastes.
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 C70 high-strength concretes and preparation method thereof.
Technical scheme is as follows:
A kind of C70 high-strength concrete, is made of following material: 365-415 parts of cement, 70-90 parts of miberal powder, flyash 25-
35 parts, 40-60 parts of solid sulfur ash, 950-1100 parts of coarse aggregate, 650-800 parts of fine aggregate, 3-4.5 parts of water-reducing agent, corrosion inhibitor 5-12
Part, 125-145 parts of water, based on parts by weight.
Preferably, a kind of C70 high-strength concrete, is made of following material: 372-397 parts of cement, 75-85 parts of miberal powder,
28-33 parts of flyash, 50-60 parts of solid sulfur ash, 980-1050 parts of coarse aggregate, 700-760 parts of fine aggregate, 3.5-4 parts of water-reducing agent, resistance
Become rusty agent 8-12 parts, 135-143 parts of water, based on parts by weight.
Further, a kind of C70 high-strength concrete, is made of following material: 385 parts of cement, 80 parts of miberal powder, flyash 30
Part, 55 parts of solid sulfur ash, 1020 parts of coarse aggregate, 720 parts of fine aggregate, 3.6 parts of water-reducing agent, 10 parts of corrosion inhibitor, 138 parts of water, with weight
Number meter.
The cement is selected from 42.5 cement of P.O, is provided by Dujiang weir Lafarge Cement Co., Ltd, performance detection knot
Fruit is as follows: normal consistency water requirement 26.7%, specific surface area 369m2·kg-1, presetting period 170min, final setting time 246min,
3 days flexural strengths 6.0MPa, 28 days flexural strengths 8.3MPa, 3 days compression strength 31.2MPa, 28 days compression strength 50.1MPa,
SO3Content 2.03% (≤3.5%), content of MgO 2.41% (≤5%), stability are qualified.
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 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 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 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.
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 C70 high-strength concrete, comprising the following steps:
(1) raw material are accurately weighed by above-mentioned weight ratio, by cement, miberal powder, flyash, solid sulfur ash, fine aggregate, thick bone
In material, 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
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.
C70 high-strength concrete can be made.
42.5 ordinary portland cements, S95 grade miberal powder, I grade of flyash, grinding solid sulfur ash constitute C70 high in the present invention
The gelling system of reinforced concrete, the Ca (OH) that hydrated cementitious generates2It is the main of miberal powder, flyash and solid sulfur ash potential activity
Exciting agent, while miberal powder, flyash and solid sulfur ash are also the important sources of the gelling system gelling.
Compared with 42.5 ordinary portland cements are used alone and make high-strength concrete cementitious material, mixed again in cement a certain amount of
Miberal powder, after flyash and solid sulfur ash will necessarily the hydration and hardening performance to high-strength concrete gelling system generate to a certain degree
Influence.There are larger difference, three is gelled to high-strength concrete for miberal powder, flyash, the physical and chemical performance between solid sulfur ash three
The Influencing Mechanism of system performance is also just inevitable different, if but can make full use of the physical and chemical performance of different component substance in gelling system
Feature realizes the optimum organization between different component, is then conducive to the hydration and hardening performance for improving entire gelling system.
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 369m 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.
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 369m 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.
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 369m 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.
Miberal powder and flyash usually only have potential pozzolanic activity, and solid sulfur ash not only has potential volcanic ash living
Property, also there is the hydraulicity and hydration swelling, this removes active silica-alumina mineral derived from the particularity of its internal active mineral composition
Outside, calcium oxide, anhydrite are also contained in solid sulfur ash；In addition, being different from flyash (and miberal powder) particle has smooth surface
The loose porous shape characteristic in inside and outside is presented in feature, solid sulfur ash particle.It is handled by grinding, solid sulfur ash particle can be changed and dredge
The porous shape characteristic of pine, is obviously reduced its grain diameter, particle interior porosity is substantially reduced, specific surface area obviously increases
Add, this advantageously reduce its water requirement, reduce its particle surface micropore to the absorption of organic macromolecule, improve its overall activity,
Promote the wherein benefits such as slightly solubility anhydrite acceleration of hydration.
The present invention utilizes S95 miberal powder, I grade of flyash, three kinds of admixtures of grinding solid sulfur ash and 42.5 normal silicates simultaneously
Cement is mixed the gelling system for constituting high-strength concrete again, novelty essentially consist in given full play to different material group point it
Between mutual supplement with each other's advantages on physical and chemical performance, the effect that mutually enhances: in terms of chemical action, Ca that silicate cement hydration generates
(OH)2The potential activity of miberal powder, flyash and solid sulfur ash, while anhydrite hydration in solid sulfur ash can be excited as alkali-activator
The dihydrate gypsum of formation further excites the potential activity of miberal powder, flyash and its solid sulfur ash itself as sulphate activation agent,
" alkali-activated carbonatite effect+sulphate activation effect " makes that the hydrated product of gelling system is more abundant, closely knit firm, miberal powder, flyash
And the potential activity of solid sulfur ash is more fully excited, resource value obtains more efficiently utilizing.In terms of physical action,
In the gelling system that above-mentioned ordinary portland cement, miberal powder, flyash and solid sulfur ash are constituted, have by specific surface area sequence:
Solid sulfur ash > slag micropowder > flyash > portland cement illustrates the particle size range of different material component by certain gradient point
Cloth, 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, subtracts
Few gelling system microstructural flaws.
Granite stones 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 granite stones,
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 granite stones and natural river sand, is fully considering thickness bone
On the basis of expecting physical features, it is based on closestpacking principle, it is determined that (i.e. fine aggregate is in aggregate system for the sand coarse aggregate ratio of aggregate system
In weight ratio), 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.
C70 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 C70 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 C70 high-strength concrete, is made of following material: 365-415 parts of cement, 70-90 parts of miberal powder,
25-35 parts of flyash, 40-60 parts of solid sulfur ash, 950-1100 parts of coarse aggregate, 650-800 parts of fine aggregate, 3-4.5 parts of water-reducing agent, resistance
Become rusty agent 5-12 parts, 125-145 parts of water, based on parts by weight.The present invention utilizes S95 miberal powder, I grade of flyash, grinding to consolidate sulphur simultaneously
Grey three kinds of admixtures and 42.5 ordinary portland cements are mixed the gelling system for constituting high-strength concrete again, innovative main
The effect for being to have given full play to the mutual supplement with each other's advantages between different material component on physical and chemical performance, mutually enhancing: chemical action side
Face, the Ca (OH) that silicate cement hydration generates2The potential work of miberal powder, flyash and solid sulfur ash can be excited as alkali-activator
Property, while the dihydrate gypsum that anhydrite hydration is formed in solid sulfur ash further excites miberal powder, flyash as sulphate activation agent
And its potential activity of solid sulfur ash itself, " alkali-activated carbonatite effect+sulphate activation effect " make the hydrated product of gelling system more
Abundant, closely knit firm, the potential activity of miberal powder, flyash and solid sulfur ash is more fully excited, and resource value obtains more
Add efficient utilization.In terms of physical action, in the glue that above-mentioned ordinary portland cement, miberal powder, flyash and solid sulfur ash are constituted
In solidifying system, have by specific surface area sequence: solid sulfur ash > slag micropowder > flyash > 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.
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.
C70 high-strength concrete properties prepared by the present invention are excellent, with traditional high-strength coagulation of the C70 without solid sulfur ash
Soil is compared, and C70 high-strength concrete prepared by the present invention has higher slump, divergence and compression strength, this shows this
Invention, which substitutes the gelling system that part miberal powder and flyash make cement admixture building using the solid sulfur ash after grinding, to be had more preferably
Gelling, with this gelling system preparation C70 high-strength concrete have better working performance and mechanical property, overcome simultaneously
The conventional cements admixture shortages of resources such as miberal powder, flyash and the problem that solid sulfur ash utilization approaches are limited, utilization rate is low.
Specific embodiment:
Embodiment 1:
A kind of C70 high-strength concrete, is made of following material: 385 parts of cement, 80 parts of miberal powder, 30 parts of flyash, solid sulfur ash
55 parts, 1020 parts of coarse aggregate, 720 parts of fine aggregate, 3.6 parts of water-reducing agent, 10 parts of corrosion inhibitor, 138 parts of water, based on parts by weight.
The cement is selected from 42.5 cement of P.O, is provided by Dujiang weir Lafarge Cement Co., Ltd, performance detection knot
Fruit is as follows: normal consistency water requirement 26.7%, specific surface area 369m2·kg-1, presetting period 170min, final setting time 246min,
3 days flexural strengths 6.0MPa, 28 days flexural strengths 8.3MPa, 3 days compression strength 31.2MPa, 28 days compression strength 50.1MPa,
SO3Content 2.03% (≤3.5%), content of MgO 2.41% (≤5%), stability are qualified.
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 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 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 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.
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 C70 high-strength concrete, comprising the following steps:
(1) raw material are accurately weighed by above-mentioned weight ratio, by cement, miberal powder, flyash, solid sulfur ash, fine aggregate, thick bone
In material, 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 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 C70 high
Reinforced concrete.
Embodiment 2:
A kind of C70 high-strength concrete, is made of following material: 372 parts of cement, 85 parts of miberal powder, 33 parts of flyash, solid sulfur ash
60 parts, 1020 parts of coarse aggregate, 720 parts of fine aggregate, 3.6 parts of water-reducing agent, 10 parts of corrosion inhibitor, 138 parts of water, based on parts by weight.
The cement is selected from 42.5 cement of P.O, is provided by Dujiang weir Lafarge Cement Co., Ltd, performance detection knot
Fruit is as follows: normal consistency water requirement 26.7%, specific surface area 369m2·kg-1, presetting period 170min, final setting time 246min,
3 days flexural strengths 6.0MPa, 28 days flexural strengths 8.3MPa, 3 days compression strength 31.2MPa, 28 days compression strength 50.1MPa,
SO3Content 2.03% (≤3.5%), content of MgO 2.41% (≤5%), stability are qualified.
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 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 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 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.
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 C70 high-strength concrete, comprising the following steps:
(1) raw material are accurately weighed by above-mentioned weight ratio, by cement, miberal powder, flyash, solid sulfur ash, fine aggregate, thick bone
In material, 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 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 C70 high
Reinforced concrete.
Embodiment 3:
A kind of C70 high-strength concrete, is made of following material: 397 parts of cement, 75 parts of miberal powder, 28 parts of flyash, solid sulfur ash
50 parts, 1020 parts of coarse aggregate, 720 parts of fine aggregate, 3.6 parts of water-reducing agent, 10 parts of corrosion inhibitor, 138 parts of water, based on parts by weight.
The cement is selected from 42.5 cement of P.O, is provided by Dujiang weir Lafarge Cement Co., Ltd, performance detection knot
Fruit is as follows: normal consistency water requirement 26.7%, specific surface area 369m2·kg-1, presetting period 170min, final setting time 246min,
3 days flexural strengths 6.0MPa, 28 days flexural strengths 8.3MPa, 3 days compression strength 31.2MPa, 28 days compression strength 50.1MPa,
SO3Content 2.03% (≤3.5%), content of MgO 2.41% (≤5%), stability are qualified.
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 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 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 60 in original state solid sulfur ash investment 500 × 500mm of Φ cement testing ball millmIn.
The 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.
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 C70 high-strength concrete, comprising the following steps:
(1) raw material are accurately weighed by above-mentioned weight ratio, by cement, miberal powder, flyash, solid sulfur ash, fine aggregate, thick bone
In material, 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 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 C70 high
Reinforced concrete.
Embodiment 4:
A kind of C70 high-strength concrete, is made of following material: 385 parts of cement, 80 parts of miberal powder, 30 parts of flyash, solid sulfur ash
55 parts, 1040 parts of coarse aggregate, 710 parts of fine aggregate, 3.6 parts of water-reducing agent, 10 parts of corrosion inhibitor, 138 parts of water, based on parts by weight.
The cement is selected from 42.5 cement of P.O, is provided by Dujiang weir Lafarge Cement Co., Ltd, performance detection knot
Fruit is as follows: normal consistency water requirement 26.7%, specific surface area 369m2·kg-1, presetting period 170min, final setting time 246min,
3 days flexural strengths 6.0MPa, 28 days flexural strengths 8.3MPa, 3 days compression strength 31.2MPa, 28 days compression strength 50.1MPa,
SO3Content 2.03% (≤3.5%), content of MgO 2.41% (≤5%), stability are qualified.
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 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 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 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.
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 C70 high-strength concrete, comprising the following steps:
(1) raw material are accurately weighed by above-mentioned weight ratio, by cement, miberal powder, flyash, solid sulfur ash, fine aggregate, thick bone
In material, 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 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 C70 high
Reinforced concrete.
Embodiment 5:
A kind of C70 high-strength concrete, is made of following material: 385 parts of cement, 80 parts of miberal powder, 30 parts of flyash, solid sulfur ash
55 parts, 1020 parts of coarse aggregate, 720 parts of fine aggregate, 3.6 parts of water-reducing agent, 10 parts of corrosion inhibitor, 140 parts of water, based on parts by weight.
The cement is selected from 42.5 cement of P.O, is provided by Dujiang weir Lafarge Cement Co., Ltd, performance detection knot
Fruit is as follows: normal consistency water requirement 26.7%, specific surface area 369m2·kg-1, presetting period 170min, final setting time 246min,
3 days flexural strengths 6.0MPa, 28 days flexural strengths 8.3MPa, 3 days compression strength 31.2MPa, 28 days compression strength 50.1MPa,
SO3Content 2.03% (≤3.5%), content of MgO 2.41% (≤5%), stability are qualified.
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 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 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 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.
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 C70 high-strength concrete, comprising the following steps:
(1) raw material are accurately weighed by above-mentioned weight ratio, by cement, miberal powder, flyash, solid sulfur ash, fine aggregate, thick bone
In material, 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 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 C70 high
Reinforced concrete.
The C70 high-strength concrete of Examples 1 to 5 preparation is subjected to performance ratio with the C70 high-strength concrete without solid sulfur ash
Compared with as a result as follows:
Remarks: the C70 high-strength concrete without solid sulfur ash is made of following material: 385 parts of cement, 125 parts of miberal powder, fine coal
Grey 40 parts, 1020 parts of coarse aggregate, 720 parts of fine aggregate, 3.6 parts of water-reducing agent, 10 parts of corrosion inhibitor, 138 parts of water, based on parts by weight；
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 C70 high-strength concrete of solid sulfur ash, Examples 1 to 5
The C70 high-strength concrete of preparation has higher slump, divergence and compression strength, this shows the present invention using after grinding
Solid sulfur ash substitution part miberal powder and flyash make cement admixture building gelling system have better gelling, with this glue
The C70 high-strength concrete of solidifying 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 C70 high-strength concrete, it is characterised in that: be made of following material: 365-415 parts of cement, 70-90 parts of miberal powder,
25-35 parts of flyash, 40-60 parts of solid sulfur ash, 950-1100 parts of coarse aggregate, 650-800 parts of fine aggregate, 3-4.5 parts of water-reducing agent, resistance
Become rusty agent 5-12 parts, 125-145 parts of water, based on parts by weight.
2. a kind of C70 high-strength concrete according to claim 1, it is characterised in that: be made of following material: cement 372-
397 parts, 75-85 parts of miberal powder, 28-33 parts of flyash, 50-60 parts of solid sulfur ash, 980-1050 parts of coarse aggregate, fine aggregate 700-760
Part, 3.5-4 parts of water-reducing agent, 8-12 parts of corrosion inhibitor, 135-143 parts of water, based on parts by weight.
3. a kind of C70 high-strength concrete according to claim 2, it is characterised in that: be made of following material: cement 385
Part, 80 parts of miberal powder, 30 parts of flyash, 55 parts of solid sulfur ash, 1020 parts of coarse aggregate, 720 parts of fine aggregate, 3.6 parts of water-reducing agent, corrosion inhibitor
10 parts, 138 parts of water, based on parts by weight.
4. a kind of C70 high-strength concrete according to claim 2, it is characterised in that: the cement is selected from 42.5 water of P.O
Mud, performance test results are as follows: normal consistency water requirement 26.7%, specific surface area 369m2·kg-1, presetting period 170min,
Final setting time 246min, 3 days flexural strength 6.0MPa, 28 days flexural strength 8.3MPa, 3 days compression strength 31.2MPa, 28 days anti-
Compressive Strength 50.1MPa, SO3Content 2.03%, content of MgO 2.41%, stability are qualified.
5. a kind of C70 high-strength concrete according to claim 3, it is characterised in that: it is high that the miberal powder is selected from S95 grades of granulations
Furnace slag micropowder, performance test results are as follows: specific surface area 478m2·kg-1, than 101%, 28 day compression strength of fluidity
Than 99.5%.
6. a kind of C70 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%.
7. a kind of C70 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%.
8. a kind of C70 high-strength concrete according to claim 1, it is characterised in that: the coarse aggregate connects selected from 5-20mm
Continuous gradation 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；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/T14684-2011 " construction sand " and requires, clay content 0.1%.
9. a kind of C70 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 C70 high-strength concrete according to claim 1, it is characterised in that: including following step
It is rapid:
(1) raw material are accurately weighed by above-mentioned weight ratio, by cement, miberal powder, flyash, solid sulfur ash, fine aggregate, coarse aggregate,
Corrosion inhibitor is 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 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 C70 high-strength concrete.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111116117A (en) * | 2019-12-18 | 2020-05-08 | 山东大学 | Chemically-excited sulfur-fixing ash-slag-based foamed light soil |
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| CN111116117A (en) * | 2019-12-18 | 2020-05-08 | 山东大学 | Chemically-excited sulfur-fixing ash-slag-based foamed light soil |
| CN111116117B (en) * | 2019-12-18 | 2021-02-26 | 山东大学 | Chemically-excited sulfur-fixing ash-slag-based foamed light soil |
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