CN1381421A - Additive for non-cracking high-performance concrete and its using method - Google Patents
Additive for non-cracking high-performance concrete and its using method Download PDFInfo
- Publication number
- CN1381421A CN1381421A CN02121220A CN02121220A CN1381421A CN 1381421 A CN1381421 A CN 1381421A CN 02121220 A CN02121220 A CN 02121220A CN 02121220 A CN02121220 A CN 02121220A CN 1381421 A CN1381421 A CN 1381421A
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- China
- Prior art keywords
- adulterant
- concrete
- wingdale
- silicon material
- cement
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
- C04B40/0042—Powdery mixtures
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—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
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/34—Non-shrinking or non-cracking materials
- C04B2111/343—Crack resistant materials
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
An additive of cement concrete for preventing cracking contains inorgnosilicon, limestone, cube spar and calcium lime through pre-mixing by grinding, further grinding and sieving by 400 meshes with riddings is less than or equal or 7%. It is applied by mixing it with cement, water, sand, broken granite and efficient water-reducing agent. Its advantages are simple preparing process, and low cost.
Description
Technical field
The invention belongs to material of construction, relate generally to the improvement of high-performance concrete material.
Background technology
Known high performance concrete is the base mateiral of construction industry, and multiple have high performance concrete and be widely used in various building sites, for structure and the quality of improving building provides material foundation; But concrete be full of cracks problem still is present among each architectural entity to some extent after the moulding, influences its use value, becomes technical problem thorny in architectural design and the unit in charge of construction.
Summary of the invention
The technical problem to be solved in the present invention is, the particle bonding bond stress that proposition can improve concrete when stirring can satisfy the degree of mobilization of high pressure pumping, reaches the homogeneous crystallization after solidifying, the preparation of the high-performance concrete additive of bright and clean closely knit nothing be full of cracks, and the technical scheme of using method.
The particular content of technical solution of the present invention is that the composition and the content range thereof of additive for non-cracking high-performance concrete are inorganic silicon material 40-55%, Wingdale 14-50%, dehydrated gyp-4-12%, unslaked lime 6-19%; Wherein, during preparation inorganic silicon material, Wingdale, dehydrated gyp-and unslaked lime carried out all respectively just grinding, carry out grinding second time after mixing according to the above ratio, make and reach by behind 400 mesh standard sieves, screen over-size promptly is the adulterant finished product less than 7% powder.When using this adulterant concrete batching, mix in the cement aggregate by the 8-25% of used cement weight, dry mixing evenly, add water, high efficiency water reducing agent, stir again, can prepare high-performance and not have the be full of cracks concrete.The weight ratio of used main raw is: cement is selected the general silicon of P0425 for use, and consumption is 100; Water 28-30; Medium sand fineness modulus 2.6, consumption are 106-109; Particle diameter is the granite stones 210-215 of 5-20mm; The high efficiency water reducing agent consumption is 1.8-2.5.Like this, adulterant based on the inorganic silicon material, in use with hydrated cementitious resultant-inorganic silica gel, change mixing water viscosity, improved the bonding bond stress of particle, effectively reduced the particle gap, sealed component surface, stop the free-water in the concrete formation process to be analysed outward, concrete hydration process is fully finished, satisfied the stability requirement; Inorganic silica gel generates for sodium ion extremely strong restraining effect, has stopped the intravital chemistry of concrete from rotten; Make concrete in moulding process, eliminate the be full of cracks origin cause of formation.Therefore the technical problem of the present invention's proposition is resolved.
The composition of adulterant of the present invention is inorganic silicon material 42%, Wingdale 35%, dehydrated gyp-8%, unslaked lime 15%.
The composition of adulterant of the present invention is inorganic silicon material 47%, Wingdale 39%, dehydrated gyp-6%, unslaked lime 8%.
The composition of adulterant of the present invention is inorganic silicon material 45%, Wingdale 35%, dehydrated gyp-8%, unslaked lime 12%.
Adulterant of the present invention is when the preparation high performance concrete, and incorporation is the 8-25% of corresponding cement consumption.
When adulterant of the present invention is used to prepare the high performance concrete operation, make its free-water eduction rate reduce to 5% by 50% of routine, mixing the concrete that makes has good particle bonding bond stress, and the high pressure pumping is bleeding not; Slump is increasing on the 18cm basis, through the time 30 minutes, 60 minutes, 90 minutes rate of loss respectively less than 0.5cm, 1cm, 2cm; Reach during concrete vibrating with vibrations frequently, homogeneous crystallization; Inorganic silica gel has the sodium ion of inhibition to generate and separates out effect, has stopped the chemical corrosion problem.Changed the crystallization Forming Quality from inside concrete, structures are cement raw color and luster, bright and clean densification, the refractive power effect is arranged.This adulterant preparation C80-C100 rank does not have the be full of cracks concrete, has fundamentally changed texture quality, has eliminated the be full of cracks origin cause of formation, has improved the overall target of weather resistance.Its ultimate compression strength improves 10%, can save cement consumption 10-20% under the situation on year-on-year basis.Raw material sources of the present invention are extensive, process easy, quality be easy to control, be a kind of low cost, high-quality adulterant.
Embodiment
The invention will be further described below in conjunction with embodiment.
First embodiment is the bolster stake that is used for factory building between large car, and its original design section is 1 * 1m, and high 8m is designed to the C50 concrete.
This routine dopant inorganic silicon material 42%, Wingdale 35%, dehydrated gyp-8%, unslaked lime 15%.Inorganic silicon material, Wingdale, dehydrated gyp-and unslaked lime all need carry out just grinding when preparation, and carry out the second time after each component is mixed according to the above ratio and grind, made powder, behind 400 mesh standard sieves, screen over-size is 5%, promptly is this routine adulterant finished product.When using this adulterant concrete batching, mix by 14% of used cement weight; The weight ratio of this concrete material therefor is: cement is selected the general silicon of P0425 for use, and consumption is 100; Water 30; Medium sand fineness modulus 2.6, consumption are 108; Particle diameter is 5-20 centimetre a granite stones 213; The high efficiency water reducing agent consumption is 1.8.Be used for above-mentioned compound with this routine dopant, the concrete C80 rank that is mixed with reaches 88MPa through the check concrete strength.Section through adopting the made bolster stake of this routine concrete is that 0.8 * 0.6m promptly satisfies engineering carrying needs.
Second embodiment is used for the basis that certain unit waters the main equipment anti-vibration, and the design concrete grade is the C100 rank.
This routine dopant inorganic silicon material 47%, Wingdale 39%, dehydrated gyp-6%, unslaked lime 8%.Inorganic silicon material, Wingdale, dehydrated gyp-and unslaked lime all need carry out just grinding when preparation, and carry out the second time after each component is mixed according to the above ratio and grind, made powder, behind 400 mesh standard sieves, screen over-size is 3%, promptly is this routine adulterant finished product.When using this adulterant concrete batching, mix by 18% of used cement weight; The weight ratio of this concrete material therefor is: cement is selected the general silicon of P0425 for use, and consumption is 100; Water 29; Medium sand fineness modulus 2.6, consumption are 109; Particle diameter is the granite stones 212 of 5-20mm; The high efficiency water reducing agent consumption is 1.9.Be used for above-mentioned compound with this routine dopant, the C100 concrete of preparing reaches 109.8MPa through the check concrete strength.
When building,, exceed 1 centimeter on top, the ramped shaped that the bottom is 3 centimeters because of a 1.5M * 0.3M template displacement is arranged.Built after the moulding 60 hours, and, adopted manpower to cut with the drill rod cutter for the outstanding slope of pruning.Only this work, 13 workmans have done a class, cut with clink and beat, only see burn with anger in, only stay next white point at this place, cut at all.Helplessly carry out machinery with concrete disk grooving machine and cut, only this some engineering has just been damaged three saw blades.Find out that from the thin slice that cuts concrete color is a Dark grey, closely knit even matter crystallization arranged, the refractive power point is arranged, and stop concrete cracking,, be the structure of the bright and clean densification of homogeneous crystallization.
The 3rd embodiment is used under certain mine negative 420m, 4 * 6m to transport main tunnel, the construction reinforcing engineering when needing to fill width and be 14 * 32 centimeters upright tomography.The particular requirement that will satisfy when building this fill concrete is:
1. aboveground stirring, tinning is transported to mining face under mine, needs 80 minutes, requires loss of slump rate≤2%.
2. concrete will have good bond stress to reinforcing bar, and reinforcing bar is not had corrosion.
3. concrete and basement rock will have closely knit firm bonding sticking power, and grouting pressure is designed to 1.5 times-2 times, promptly in the defeated slurry of 10Mpa pressure, can not let out the slurry phenomenon, and element bearing capacity must be greater than 10Mpa.
4. template is 0.4 * 1.5m specification, and casting concrete crown portion does not have the space of vibrating, and can only vibrate on ippon, and can the concrete that does not vibrate in the arch reach closely knit crystallization, and adhesion is firm, seamless requirement.
5. this builds because of shipment distance far, and template Xiao Yi forms multiple tracks and connects stubble, requires concrete that good sticking power is arranged.
6. the tomography water burst adopts and to dredge the water pipe drainage, treat concrete setting after, with this Guan Dingshui filling tomography slip casting.
Support after-pouring with the steel bow member in the original plan and coagulate native the reinforcing, 1 meter of thickness, working face extends 4.5 meters engineerings, fills tomography with slip casting.And this example is to adopt C100 rank concrete strengthening, deducts 5 groups of steel bow members, with φ 30mm reinforcing bar, builds 60 centimeters thick concrete schemes.For this reason, selecting concrete composition proportioning for use is P.O425 cement 100%, medium sand fineness modulus 2.6, consumption 109%, particle diameter 5-20mm stone consumption 210%, high efficiency water reducing agent 25%, mixing water 30%.The composition of used concrete admixture is inorganic silicon material 45%, Wingdale 35%, dehydrated gyp-8%, unslaked lime 12%.Made powder, behind 400 mesh standard sieves, screen over-size is 2%, mixes this routine adulterant by 22% of institute's concrete batching cement consumption.After implementing, quality examination is:
1. the casting concrete slump increases 18cm, and 80 minutes rate of loss are 2cm, satisfies the requirement when building.
2. vibrate and carry out at 2 meters of ippon, the upper and lower part all is with vibrations frequently, and the plate screw eye is touched when shaking with frequency by crown portion, extrudes the toothpaste-like slurry, and only 2 minutes is that moulding is solidified, no longer spillage.
3. tear open to touch and pull back maintenance 3 days, implement slip casting, rise and press 6Mpa, under the pressure of final pressure 10MPa, concrete does not have any variation, and connecing does not have string on the basement rock of stubble and let out slurry, and the concrete that 60cm is thick sustains the pump pressure of 10MPa, makes slip casting finish the filling task.
4. find when checking boring that this routine concrete to reinforcing bar bonding bond stress close and firm, does not have and peels off cavitation, reach whole consistent effect.
Laterally level connect a batch uniform quality, do not see it being that multilayer is built from outward appearance.
6. bright and clean, the no sodium ion of concrete surface is separated out, and reflecting effect is arranged.Touch with hand, smooth thin even, creating high grade project aspect the reinforcing of colliery.
Claims (5)
1. the composition of additive for non-cracking high-performance concrete is, inorganic silicon material 40-55%, Wingdale 14-50%, dehydrated gyp-4-12%, unslaked lime 6-19%; Wherein, during preparation inorganic silicon material, Wingdale, dehydrated gyp-and unslaked lime carried out all respectively just grinding, carry out grinding second time after mixing according to the above ratio, make and reach by behind 400 mesh standard sieves, screen over-size is less than 7% powder, adulterant; The weight ratio of corresponding concrete main raw is: cement is selected the general silicon of P0425 for use, and consumption is 100; Water 28-30; Medium sand fineness modulus 2.6, consumption are 106-109; Particle diameter is the granite stones 210-215 of 5-20mm; The high efficiency water reducing agent consumption is 1.8-2.5; 8-25% by the used cement weight of concrete batching mixes in the cement aggregate with above-mentioned adulterant, dry mixing evenly, add water and high efficiency water reducing agent, stir stand-by.
2. adulterant according to claim 1; It is characterized in that: the composition of described adulterant is inorganic silicon material 42%, Wingdale 35%, dehydrated gyp-8%, unslaked lime 15%.
3. adulterant according to claim 1; It is characterized in that: the composition of described adulterant is inorganic silicon material 47%, Wingdale 39%, dehydrated gyp-6%, unslaked lime 8%.
4. adulterant according to claim 1; It is characterized in that: the composition of described adulterant is inorganic silicon material 45%, Wingdale 35%, dehydrated gyp-8%, unslaked lime 12%.
5. as adulterant as described in the claim 1,2,3 or 4; It is characterized in that: described adulterant is when the preparation high performance concrete, and incorporation is the 8-25% of corresponding cement consumption.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02121220A CN1381421A (en) | 2002-06-10 | 2002-06-10 | Additive for non-cracking high-performance concrete and its using method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02121220A CN1381421A (en) | 2002-06-10 | 2002-06-10 | Additive for non-cracking high-performance concrete and its using method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1381421A true CN1381421A (en) | 2002-11-27 |
Family
ID=4744890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN02121220A Pending CN1381421A (en) | 2002-06-10 | 2002-06-10 | Additive for non-cracking high-performance concrete and its using method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1381421A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2912130A1 (en) * | 2007-02-07 | 2008-08-08 | Sicab Carmeuse France Sa | ADDITIVE, IN PARTICULAR FOR THE MANUFACTURE OF HYDRAULIC BONDER, CONCRETE OR MORTAR, HYDRAULIC BINDER, CONCRETE OR MORTAR COMPOSITION AND PROCESS FOR THE PRODUCTION OF SUCH MORTAR OR CONCRETE |
| CN100464045C (en) * | 2003-03-20 | 2009-02-25 | 吴全安 | Machine-made hollow partition wall luffer board using new wall material |
-
2002
- 2002-06-10 CN CN02121220A patent/CN1381421A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100464045C (en) * | 2003-03-20 | 2009-02-25 | 吴全安 | Machine-made hollow partition wall luffer board using new wall material |
| FR2912130A1 (en) * | 2007-02-07 | 2008-08-08 | Sicab Carmeuse France Sa | ADDITIVE, IN PARTICULAR FOR THE MANUFACTURE OF HYDRAULIC BONDER, CONCRETE OR MORTAR, HYDRAULIC BINDER, CONCRETE OR MORTAR COMPOSITION AND PROCESS FOR THE PRODUCTION OF SUCH MORTAR OR CONCRETE |
| WO2008101794A1 (en) * | 2007-02-07 | 2008-08-28 | Sicab-Carmeuse France | Additive essentially intended for producing a hydraulic binder, concrete or mortar, hydraulic binder, concrete or mortar composition, and method for making such mortar or concrete |
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