CN101962997A - Mass concrete construction method of super-thick foundation - Google Patents
Mass concrete construction method of super-thick foundation Download PDFInfo
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- CN101962997A CN101962997A CN 201010299156 CN201010299156A CN101962997A CN 101962997 A CN101962997 A CN 101962997A CN 201010299156 CN201010299156 CN 201010299156 CN 201010299156 A CN201010299156 A CN 201010299156A CN 101962997 A CN101962997 A CN 101962997A
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Abstract
The invention discloses a mass concrete construction method of a super-thick foundation, comprising the following steps of: (1) binding the steel bars on a base plate of the foundation, and fixing cooling water pipes on a steel bar fixing frame, wherein the cooling water pipes are evenly distributed at the inside layers of the foundation; (2) blending the concrete; (3) pouring the concrete; (4) carrying out press polishing to the concrete on the surface of the foundation before the final setting of the concrete of the foundation; and (5) maintaining the foundation. The invention adopts the anti-cracking concrete so as to reduce the cement content and decrease the generation of the heat of hydration; the embedding of the cooling water pipes can shorten the emission time of the heat in the concrete and decrease the maintenance time of the concrete structure; the press polishing is carried out to the surface of the concrete structure to ensure that the desiccation fissures are prevented; and maintaining the concrete with preserved temperature and humidity can improve the quality of the concrete. The invention has the effects of at least improving the work efficiency by 4 times, greatly saving the cost, improving the work efficiency and paving the way for the advanced construction of the next process.
Description
Technical field
The present invention relates to a kind of mass concrete construction method, particularly a kind of super thick base mass concrete construction method.
Background technology
In the engineering construction of metallurgical industry Equipment Foundations, especially blast furnace engineering, along with the increase of blast furnace scale, the corresponding increase of base concrete quantity, concrete in mass is in continuous placing and hardening process, hydrated reaction of cement produces a large amount of heats of hydration, because concrete thickness 〉=5m, thermal resistance is very big, internal water heat-transmission amount is assembled and is difficult for distributing, aquation heats up high, and surface radiating is very fast, and inside concrete and surface form the big temperature difference.Inside concrete and surface temperature difference change the influence that adds external environmental factor, form removal and load etc., cause uneven temperature deformation and thermal stresses, in case tensile stress surpasses the instant tensile strength of concrete, and will be in concrete surface or the inner crack that produces.The generation of distress in concrete and development, not only influence the engineering outward appearance, also can the accelerate concrete carbonization, influence anti-freezing property, the anti-permeability performance of structure, cause moisture and hazardous substances to be infiltrated, bring out the natural aging of corrosion of steel bar or accelerate concrete, thus supporting capacity, function of use and the durability of infringement engineering structures, become the omen of structural deterioration even, directly influence the performance of project benefit.So, the generation of must adopt various measures prevention and minimizing concrete structure crack.
Summary of the invention
The present invention provides a kind of super thick base mass concrete construction method that can reduce the crack generation for solving the technical problem that exists in the known technology, improve super thick, globality, stability and safety that large volume is basic, improve concrete durability and anti-cracking function, improve the application life of Equipment Foundations engineering.
The technical scheme that the present invention takes for the technical problem that exists in the solution known technology is: a kind of super thick base mass concrete construction method may further comprise the steps:
(1) after the sole plate reinforcing bar binding is finished, cooling water pipe is fixed on the reinforcing bar fixed mount, described cooling water pipe is evenly arranged in the basic internal layering;
(2) concrete mixing and stirring:
The match ratio that described concrete is every cubic metre is:
(1) portland slag cement: 235～330kg;
(2) sand: 735～791kg;
(3) grating coarse aggregate stone: 1032～1186kg;
(4) water: 155～210kg;
(5) flyash: 45～90kg;
(6) composite additive: 3.76～14.8kg;
(3) concrete building: from the centre on basis to around advance, even laminating is built; In the time of described concreting, recirculated cooling water in the described cooling water pipe, the cooling water circulation is carried out synchronously with concreting;
(4) before the base concrete final set, the surface of base concrete is carried out press polish;
(5) Ji Chu maintenance: at the surface of base covering insulation material, the circulation of cooling water in basic internal keeps cooling water pipe.
Described concrete is the C30 concrete, and its match ratio of every cubic metre is:
(1) portland slag cement P.S42.5:255～330kg;
(2) sand: 735～769kg;
(3) grating coarse aggregate stone: 1082～1120kg;
(4) water: 175～210kg;
(5) flyash: 45～70kg;
(6) HNF-3 composite additive: 4.59～11.4kg;
The particle diameter of described grating coarse aggregate stone is: 5～20mm, its aggregate grading is: the stone percentage by weight of particle diameter 5～10mm is 35～45%, and all the other cobble-stone diameters are greater than 10mm.
Described concrete is the C25 concrete, and its match ratio of every cubic metre is:
(1) portland slag cement P.S32.5:280～310kg;
(2) sand: 735～780kg;
(3) grating coarse aggregate stone: 1032～1115kg;
(4) water: 165～185kg;
(5) flyash: 55～75kg;
(6) the closely knit waterproof agent of JQ-M high-efficiency multi-function cracking resistance (pulvis): 5.6～14.8kg;
The particle diameter of described grating coarse aggregate stone is: 5～25mm, its aggregate grading is: the stone percentage by weight of particle diameter 5～15mm is 30～40%, and all the other cobble-stone diameters are greater than 15mm.
Described concrete is the C20 concrete, and its match ratio of every cubic metre is:
(1) portland slag cement P.S42.5:235～275kg;
(2) sand: 765～791kg;
(3) grating coarse aggregate stone: 1090～1186kg;
(4) water: 155～180kg;
(5) flyash: 80～90kg;
(6) HNF-3 composite additive: volume is 3.76～4.4kg of concrete and coal ash weight;
The particle diameter of described grating coarse aggregate stone is: 5～25mm, its aggregate grading is: the stone percentage by weight of particle diameter 5～15mm is 30～40%, and all the other cobble-stone diameters are greater than 15mm.
Advantage and good effect that the present invention has are: adopt anti-crack concrete, can reduce cement consumption, reduce the generation of the heat of hydration; Pre-buried cooling water pipe can shorten the time that the inside concrete heat distributes, and reduces the curing time of concrete structure; The concrete structural surface press polish can prevent the generation of shrinkage crack; The heat and moisture preserving curing concrete can improve concrete quality.The calculating of casting of concrete in mass body construction phase temperature stress and shrinkage stress shows: work efficiency can improve four times at least, has saved cost greatly, has improved operating efficiency, and constructing in advance for next procedure creates conditions.
Description of drawings
Fig. 1 is the present invention basis cooling water pipe layout plan;
Fig. 2 is the sectional drawing at a-a place among Fig. 1;
Fig. 3 is the distribution map of the present invention basis temperature transducer.
The specific embodiment
For further understanding summary of the invention of the present invention, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows:
Embodiment 1:
3200m
3The blast furnace foundation outline is a rectangle, long 57m, wide 42.6m.Basis end absolute altitude-5.000m is common C25 concrete to ± 0.000 part, and the concrete total amount is about 11000m
3
One, water cooling tube construction:
See also Fig. 1～2, after blast furnace foundation base plate reinforcing bar binding is finished, on reinforcing bar fixed mount 3, carry out cooling water pipe 1 construction, in the basis in the scope of 53m * 38.6m, 3 layers of the snake type water service pipes of pre-buried diameter 48mm * 1500mm, first floor apart from concrete cushion 1m, the second layer apart from concrete cushion 2.5m, the 3rd layer be the net sheet that the steel pipe of spacing 1500mm is formed apart from every layer of concrete cushion 4m; Adopt pipe collar to be connected embedded steel tube with elbow; Before concreting, need to carry out the water flowing leak test, and to the place under repair of infiltration point.
Two, concrete mixing and stirring:
Adopt the C25 anti-crack concrete, every cubic metre match ratio is as follows:
(1) portland slag cement P.S32.5:280～310kg;
(2) sand: 735～780kg;
(3) grating coarse aggregate stone: 1032～1115kg;
(4) water: 165～185kg;
(5) flyash: 55～75kg;
(6) the closely knit waterproof agent of JQ-M high-efficiency multi-function cracking resistance (pulvis): 5.6～14.8kg.
Embodiment 1.1:
Table one: a kind of match ratio that is used for super thick, C25 anti-crack concrete that large volume is basic:
| Title material | Cement | Fines | Coarse aggregate | Water | Admixture | Admixture |
| Specification | P.S32.5 | Medium sand | ?5～25mm | JQ-M | II level flyash | |
| Consumption kg/m3 | 295 | 780 | ?1032 | 173 | 14.8 | 74 |
Embodiment 1.2:
Table two: a kind of match ratio that is used for super thick, C25 anti-crack concrete that large volume is basic:
| Title material | Cement | Fines | Coarse aggregate | Water | Admixture | Admixture |
| Specification | P.S32.5 | Medium sand | ?5～25mm | JQ-M | II level flyash | |
| Consumption kg/m3 | 280 | 755 | ?1100 | 165 | 5.6 | 60 |
Embodiment 1.3:
Table three: a kind of match ratio that is used for super thick, C25 anti-crack concrete that large volume is basic:
| Title material | Cement | Fines | Coarse aggregate | Water | Admixture | Admixture |
| Specification | P.S32.5 | Medium sand | 5～25mm | JQ-M | II level flyash | |
| Consumption kg/m3 | 310 | 735 | 1115 | 185 | 6.2 | 55 |
Above-mentioned concrete characteristics are:
1) cement: select the shield Stone steles P.S32.5 of Ji Dongchan cement for use, this kind hydration heat of cement is heat of hydration minimum in corresponding cement products.
2) coarse aggregate: select Ji County granite for use, particle diameter 5～25mm, mud content is not more than 1%, and its aggregate grading is: the granite percentage by weight of particle diameter 5～15mm is 30～40%, and all the other granite particle diameters are greater than 15mm; Select the aggregate of good grating can improve concrete compactness and tensile strength, reduce shrinkage strain.
3) fines: select for use river, Fujian sand mud content to be not more than 3%.
4) mixing water, summer, the concreting mixing water adopted the cooling of ice bits, to reduce concrete out-of-machine temperature.
5) Admixture: select the closely knit waterproof agent of JQ-M high-efficiency multi-function cracking resistance for use, by match ratio control volume.Mix the JQ-M waterproof agent in concrete, the generation appropriateness of concrete in hardening process expanded, expansion energy produces the prestressing force of 0.2～0.8Mpa under the constraint at reinforcing bar ortho position, compensated the contraction of concrete in hardening process effectively; While is owing to the JQ-M waterproof agent mixing, a large amount of calcium alum crystal that cement forms in hydration process have the pore effect of stopping up of filling, the concrete pore rate is descended, reduce the total pore space, improved the distribution of concrete mesopore structure greatly, make concrete more closely knit, significantly improve concrete anti-crack and anti-seepage performance; Because the raising of concrete density, the ability of concrete opposing surrounding environment etching medium greatly improves again, thereby effectively prevents and delay corrosion of steel bar, and concrete life is greatly improved.The closely knit waterproof agent of JQ-M high-efficiency multi-function cracking resistance, have minimizing, early strong, slow setting, cause etc. all multi-functionally, and can improve concrete pumpability, greatly facilitate concrete stirring, transportation and construction, effectively improve efficiency of construction.
6) flyash: select army provisions city II level flyash for use.Alternative part cement reduces the part heat of hydration.
Above-mentioned concrete sand coarse aggregate ratio: 43%, water/binder ratio: 0.59, slump 160mm～180mm.
Three, concreting:
Concreting advances to two ends for the centre from the basis in proper order, and even laminating is built.
± 0.000 following concrete is 22 layers.Building thickness from-5.000 to the-every layer concrete of 3.000m is 300mm, and totally 7 layers, every layer concrete amount is 718.2m
3, every layer of time of building is 9 hours; From-3.000m～± 0.000m, it is 200mm that every layer concrete is built thickness, totally 15 layers, every layer concrete amount is about 351.6m
3, every layer of time of building is 5 hours.On reinforcing bar fixed mount column, provide every layer of absolute altitude of building before building, mark, control every layer the thickness of building with red paint.Each layer is built and must be guaranteed not carry out before its last layer concrete reaches initial set.The concrete initial setting time was controlled at 8 hours the most at last, and concrete slump is 140～160mm.
Concreting and cooling water circulation are carried out synchronously, and extend to 12 days.
Concreting begins water flowing during to the cooling water pipe absolute altitude immediately; When concreting first floor cooling water pipe bottom, open water pump at once, the first floor cooling water pipe begins circulation; When the second layer cooling water pipe of concreting bottom, open water pump immediately, second layer cooling water pipe enters recurrent state; When the 3rd layer of cooling water pipe bottom of concreting, open water pump immediately, the 3rd layer of cooling water pipe begins circulation; The water temperature of importing and exporting was surveyed once in per 2 hours at the 1st～7 day, adjusted inflow temperature and flow at any time according to the result of thermometric; Utilize valve regulated water inlet temperature and delivery port temperature gap to be controlled at 25 ℃, when water inlet temperature and delivery port temperature difference above 25 ℃, take immediate steps and reduce the temperature of water inlet, can utilize in the precipitation well water as recirculated water, also can utilize ice cube to be placed in the water tank, play the effect that reduces water temperature; Another kind method is a water-change pump more, adopts the water pump more powerful, that flow is bigger, by increasing the way of flow, in the identical time, discharge more heats of hydration, will get off concrete internal temperature, the difference of controlling concrete inner maximum temperature and surface temperature is controlled at 25 ℃; Reach the purpose that whole basal temperature is evenly descended.Place 4 temperature adjustment water tanks 2 on the foundation ditch limit, and 6 water pumps (3 standby) are set.By valve regulated hot and cold water ratio, control inflow temperature and flow.
Four, before the base concrete final set, the surface of base concrete is carried out the secondary press polish, prevent that shrinkage crack from taking place.
Five, Ji Chu maintenance:
The mode of falling prevents that crackle from appearring in the basis in holding outside taking, and promptly the outside is incubated the internal cooling mode to concrete.Adopt to cover layer of plastic film earlier after blast furnace foundation concreting finishes, the film seam crossing must cement with plastic adhesive tape, guarantees seal, prevents water evaporates formation shrinkage crack; Add a cover the maintenance method of two-layer woven straw again, concrete foundation is incubated, then, whole basis is covered with colour bar cloth.The hot water that inside concrete produces is discharged in the circulation that keeps cooling water, to reduce the thermogenetic temperature of inside concrete aquation.
Between curing time, should carry out the thermometric work of preserving period, and carry out record.Thermometric is arranged one class of per 3 people of 6 people.Promptly carry out the test of concrete internal temperature in the test surface temperature of concrete, water temperature is controlled at 15 ℃ in the water tank, injects cold water during greater than 15 ℃ and derives hot water.The method of measuring concrete internal temperature is for burying point for measuring temperature underground.The thermometric monitoring instrument adopts the portable building electronic instrument for measuring temperature of JDC-2, and point for measuring temperature is along half layout of base center axle, and each point is arranged in that 50mm begins under the concrete surface, and 50mm finishes at the end up to the basis.Middle each point arranges that evenly arranged 8 groups of measuring point positions in the thermometric regional extent altogether: wherein 1,2,3,6,7 measuring point position vertical direction have respectively been arranged 6 temperature pick ups; 4 measuring point position vertical direction have been arranged 4 temperature pick ups, and 5,8 measuring point position vertical direction have respectively been arranged 3 temperature pick ups.1 environment temperature measuring point is set in addition, is placed on concrete surface, buried 41 temperature transducers altogether underground, see also Fig. 3.Each shift is thermometric four times at least, and performs the thermometric record, for insulation provides foundation.
Behind the stripping,,, obtain managing approval with the owner without any distress in concrete through checking.
Embodiment 2:
The new 2#2500m of a surname's steel
3The long 29m of blast furnace foundation, wide 29m, the thick 2500mm of a step big foot, basic gross thickness 5500mm, the C30 concrete is 3460m altogether
3
The job practices on above-mentioned basis is as different from Example 1:
1) concrete mixing and stirring;
Require to utilize 60 days later strength of concrete as the match ratio design considerations according to drawing, adopt the C30 concrete, its match ratio of every cubic metre is as follows:
(1) portland slag cement P.S42.5:255～330kg;
(2) sand: 735～769kg;
(3) grating coarse aggregate stone: 1082～1120kg;
(4) water: 175～210kg;
(5) flyash: 45～70kg;
(6) HNF-3 composite additive: 4.59～11.4kg.
Embodiment 2.1:
Table four: a kind of match ratio that is used for super thick, C30 anti-crack concrete that large volume is basic:
| Title material | Cement | Fines | Coarse aggregate | Water | Admixture | Admixture |
| Specification | P.S42.5 | Medium sand | ?5～20mm | HNF-3 | II level flyash | |
| Consumption kg/m3 | 327 | 769 | ?1082 | 200 | 11.4 | 70 |
Embodiment 2.2:
Table five: a kind of match ratio that is used for super thick, C30 anti-crack concrete that large volume is basic:
| Title material | Cement | Fines | Coarse aggregate | Water | Admixture | Admixture |
| Specification | P.S42.5 | Medium sand | ?5～20mm | HNF-3 | II level flyash | |
| Consumption kg/m3 | 255 | 750 | ?1105 | 175 | 4.59 | 65 |
Embodiment 2.3:
Table six: a kind of match ratio that is used for super thick, C30 anti-crack concrete that large volume is basic:
| Title material | Cement | Fines | Coarse aggregate | Water | Admixture | Admixture |
| Specification | P.S42.5 | Medium sand | ?5～20mm | HNF-3 | II level flyash | |
| Consumption kg/m3 | 330 | 735 | ?1120 | 210 | 5.94 | 45 |
Above-mentioned concrete characteristics are:
1) adopt slag portland P.S42.5 cement in bulk, the heat of hydration is lower.
2) adopt graded aggregate, coarse aggregate is selected basalt for use, and particle diameter is 5～20mm, and mud content is less than 1%, and its aggregate grading is: the basalt percentage by weight of particle diameter 5～10mm is 35～45%, and all the other basalt particle diameters are greater than 10mm; Fines is a medium sand, washed-out sand, and mud content is less than 3%.Stone has good grating, and the aggregate bulk density is increased, and is used to fill the mortar amount minimizing in space, helps concrete volume stable ground and improves.
3) mixing water adopts the lower well water of temperature, to reduce concrete out-of-machine temperature.
4) use composite additive, have slow setting, diminishing function, by match ratio control volume, the HNF-3 efficient retarding and water reducing agent is based on the easypro sour sodium formaldehyde condensation product of naphthalene sulphur, an amount of slow setting component, and the guarantor moulds the enhancing component and is composited, the water-reducing rate height can increase substantially concrete flowability; Reduce the heat of hydration of concrete in mass, and postpone the appearance of exothermic peak.
5) admixture is selected II level flyash for use, the mobile of pumping of concrete is significantly strengthened, and can reduce the bleeding and the drying shrinkage of concrete mix, improves pumpability of concrete greatly.For large volume concrete structural, the flyash of admixture some can also reduce the heat of hydration of cement, helps controlling the generation of thermal cracking.
Above-mentioned concrete sand coarse aggregate ratio: 38%, water/binder ratio: 0.55, slump 100mm～120mm.
For reducing slump-loss, the agitator tank of truck-transit mixer is wrapped cotton-wadded quilt, plays insulation effect.
2) the water inlet temperature of cooling water and delivery port temperature gap are controlled at 20 ℃.
Behind the stripping,,, obtain managing approval with the owner without any distress in concrete through checking.
Embodiment 3:
The 450m of iron and steel works advances in the Bazhou
3Blast furnace foundation, absolute altitude is-3.5m at the bottom of this basic bed course.The long 19.2m in basis, wide 19.2m, the thick 2500mm of a step big foot is that diameter is the cylinder of 8.7m at an upper portion thereof, base thickness 6.963m, C20 concrete 1090m
3
As different from Example 1:
1) concrete mixing and stirring;
Require to utilize 60 days later strength of concrete as the match ratio design considerations according to drawing, adopt the C20 concrete, its match ratio of every cubic metre is as follows:
(1) portland slag cement P.S42.5:235～275kg;
(2) sand: 765～791kg;
(3) grating coarse aggregate stone: 1090～1186kg;
(4) water: 155～180kg;
(5) flyash: 80～90kg;
(6) HNF-3 composite additive: 3.76～4.4kg.
Embodiment 3.1:
Table seven: a kind of match ratio that is used for super thick, C20 anti-crack concrete that large volume is basic:
| Title material | Cement | Fines | Coarse aggregate | Water | Admixture | Admixture |
| Specification | P.S42.5 | Medium sand | ?5～25mm | MF-4 | II level flyash | |
| Consumption kg/m3 | 255 | 791 | ?1186 | 168 | 4.08 | 90 |
Embodiment 3.2:
Table eight: a kind of match ratio that is used for super thick, C20 anti-crack concrete that large volume is basic:
| Title material | Cement | Fines | Coarse aggregate | Water | Admixture | Admixture |
| Specification | P.S42.5 | Medium sand | ?5～25mm | MF-4 | II level flyash | |
| Consumption kg/m3 | 275 | 765 | ?1090 | 180 | 4.4 | 90 |
Embodiment 3.3:
Table nine: a kind of match ratio that is used for super thick, C20 anti-crack concrete that large volume is basic:
| Title material | Cement | Fines | Coarse aggregate | Water | Admixture | Admixture |
| Specification | P.S42.5 | Medium sand | ?5～25mm | MF-4 | II level flyash | |
| Consumption kg/m3 | 235 | 780 | ?1100 | 155 | 3.76 | 80 |
Above-mentioned concrete characteristics are:
1) adopt slag portland P.S42.5 cement in bulk, the heat of hydration is lower.
2) adopt graded aggregate, coarse aggregate is selected limestone for use, and particle diameter is 5～25mm, and mud content is less than 1%, and its aggregate grading is: the limestone percentage by weight of particle diameter 5～15mm is 30～40%, and the particle diameter of all the other limestones is greater than 15mm; Fines is a medium sand, washed-out sand, and mud content is little by 3%.Stone has good grating, and the aggregate bulk density is increased, and is used to fill the mortar amount minimizing in space, helps the raising of concrete volume stable.
3) mixing water adopts the lower water of temperature, reduces the concrete out-of-machine temperature.
4) use composite additive, have slow setting, diminishing function, by match ratio control volume, to be multiple high efficiency water reducing agent through science be composited the main component of MF-4 increases slowly-releasing, thickening, guarantor and mould component.Have diminishing efficient height, fluidisation is good, and slump-loss is little, reduces the heat of hydration, advantages such as little volume.Adjustable coagulating various different cement, 1.5～20 hours slow setting time.
5) admixture is selected II level flyash for use, the mobile of pumping of concrete is significantly strengthened, and can reduce the bleeding and the drying shrinkage of concrete mix, improves pumpability of concrete greatly.For large volume concrete structural, the flyash of admixture some can also reduce the heat of hydration of cement, helps controlling the generation of thermal cracking.
Above-mentioned concrete sand coarse aggregate ratio: 40%, water/binder ratio: 0.66, slump 70mm～90mm.
Behind the stripping,,, obtain managing approval with the owner without any distress in concrete through checking.
The concrete that the present invention adopts has the following advantages:
(1) reduces concrete water supply volume to reduce gel material content, select the low hydration heat cement type for use.Under certain water-cement ratio, reduce the concrete water amount and can reduce the consumption of cementitious material in the concrete, thereby reduce concrete thermal discharge.Select the low hydration heat cement type for use, under identical gel material content situation, can reduce concrete heat release.
(2) mix composite additive and flyash etc.,, reduce concrete thermal discharge significantly, improve concrete workability and reliability simultaneously, prolong the slow setting time to reduce cement consumption.In concrete, mix retarding water reducer, can keep the workability of concrete can be constant and significantly reduce water/binder ratio, improve workability, and can reduce by 10%～20% cement consumption, reduce the aquation heat, slow down hydration rate, postpone the initial setting time and can slow down speed of perfusion, be beneficial to heat radiation, reduce temperature rise.In concrete, increase doping quantity of fly ash, can reduce cement consumption, reduce the hydration heat amount, also can make concrete have workability, impermeability preferably, reduce the Qinshui phenomenon and take place, help CONCRETE SURFACE TREATMENT, concrete later strength is had bigger contribution.In concrete, mix expansion agent, can come compensated part or all contractions of being produced of temperature-fall period, make structure not split or be controlled in the scope of harmless crack with concrete spontaneous expansion;
(3) improve the grating of gathering materials, adopt the bigger maximum particle diameter of gathering materials as far as possible.Improve the grating of gathering materials and to reduce its void content.Simultaneously, preferably under the situation, the maximum particle diameter of gathering materials is big more in grating, and void content is more little, and it is also just few more to fill the necessary cementitious material quantity in these spaces.The specific area of gathering materials greatly is less, and the required cement slurry volume of wetting surface of aggregate is also few more.
Although in conjunction with the accompanying drawings the preferred embodiments of the present invention are described above; but the present invention is not limited to the above-mentioned specific embodiment; the above-mentioned specific embodiment only is schematic; be not restrictive; those of ordinary skill in the art is under enlightenment of the present invention; not breaking away under the scope situation that aim of the present invention and claim protect, can also make a lot of forms, these all belong within protection scope of the present invention.
Claims (4)
1. a super thick base mass concrete construction method is characterized in that, may further comprise the steps:
(1) after the sole plate reinforcing bar binding is finished, cooling water pipe is fixed on the reinforcing bar fixed mount, described cooling water pipe is evenly arranged in the basic internal layering;
(2) concrete mixing and stirring:
The match ratio that described concrete is every cubic metre is:
(1) portland slag cement: 235～330kg;
(2) sand: 735～791kg;
(3) grating coarse aggregate stone: 1032～1186kg;
(4) water: 155～210kg;
(5) flyash: 45～90kg;
(6) composite additive: 3.76～14.8kg;
(3) concrete building: from the centre on basis to around advance, even laminating is built; In the time of described concreting, recirculated cooling water in the described cooling water pipe, the cooling water circulation is carried out synchronously with concreting;
(4) before the base concrete final set, the surface of base concrete is carried out press polish;
(5) Ji Chu maintenance: at the surface of base covering insulation material, the circulation of cooling water in basic internal keeps cooling water pipe.
2. super thick base mass concrete construction method according to claim 1 is characterized in that described concrete is the C30 concrete, and its match ratio of every cubic metre is:
(1) portland slag cement P.S42.5:255～330kg;
(2) sand: 735～769kg;
(3) grating coarse aggregate stone: 1082～1120kg;
(4) water: 175～210kg;
(5) flyash: 45～70kg;
(6) HNF-3 composite additive: 4.59～11.4kg;
The particle diameter of described grating coarse aggregate stone is: 5～20mm, its aggregate grading is: the stone percentage by weight of particle diameter 5～10mm is 35～45%, and all the other cobble-stone diameters are greater than 10mm.
3. super thick base mass concrete construction method according to claim 1 is characterized in that described concrete is the C25 concrete, and its match ratio of every cubic metre is:
(1) portland slag cement P.S32.5:280～310kg;
(2) sand: 735～780kg;
(3) grating coarse aggregate stone: 1032～1115kg;
(4) water: 165～185kg;
(5) flyash: 55～75kg;
(6) the closely knit waterproof agent of JQ-M high-efficiency multi-function cracking resistance (pulvis): 5.6～14.8kg;
The particle diameter of described grating coarse aggregate stone is: 5～25mm, its aggregate grading is: the stone percentage by weight of particle diameter 5～15mm is 30～40%, and all the other cobble-stone diameters are greater than 15mm.
4. super thick base mass concrete construction method according to claim 1 is characterized in that described concrete is the C20 concrete, and its match ratio of every cubic metre is:
(1) portland slag cement P.S42.5:235～275kg;
(2) sand: 765～791kg;
(3) grating coarse aggregate stone: 1090～1186kg;
(4) water: 155～180kg;
(5) flyash: 80～90kg;
(6) HNF-3 composite additive: volume is 3.76～4.4kg of concrete and coal ash weight;
The particle diameter of described grating coarse aggregate stone is: 5～25mm, its aggregate grading is: the stone percentage by weight of particle diameter 5～15mm is 30～40%, and all the other cobble-stone diameters are greater than 15mm.
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| CN 201010299156 CN101962997A (en) | 2010-09-30 | 2010-09-30 | Mass concrete construction method of super-thick foundation |
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| CN102410029A (en) * | 2011-12-30 | 2012-04-11 | 中铁二院工程集团有限责任公司 | Mass hollow concrete tunnel lining structure |
| CN102587404A (en) * | 2012-02-09 | 2012-07-18 | 中国十九冶集团有限公司 | Construction method for large-sized blast furnace foundation |
| CN102619236A (en) * | 2012-04-26 | 2012-08-01 | 中国化学工程第四建设有限公司 | Compound type ice chest foundation construction method |
| CN102704483A (en) * | 2012-02-26 | 2012-10-03 | 成都市第六建筑工程公司 | Method for taking cooling pipe network as building bottom plate multi-layer reinforced support frame |
| CN102747742A (en) * | 2012-07-24 | 2012-10-24 | 武汉大学 | Construction method for large-volume concrete structure of bridge loading platform |
| CN103225286A (en) * | 2013-04-25 | 2013-07-31 | 中国水电顾问集团成都勘测设计研究院 | Dam body structure of concrete gravity dam and regional coordination and temperature reduction method |
| CN103866982A (en) * | 2014-03-30 | 2014-06-18 | 青岛一建集团有限公司 | Petal artistic framework construction method |
| WO2014139252A1 (en) * | 2013-03-15 | 2014-09-18 | 中国十七冶集团有限公司 | Method for constructing large raft foundation in high-temperature environment |
| CN104060612A (en) * | 2013-03-22 | 2014-09-24 | 中国水电顾问集团贵阳勘测设计研究院 | Temperature control method and device for severe cold winter construction of concrete dam |
| CN104481150A (en) * | 2014-12-21 | 2015-04-01 | 北京工业大学 | Assembly type circulating water cooling slot for controlling large-size concrete cracks and manufacturing method |
| CN104563514A (en) * | 2014-12-05 | 2015-04-29 | 中交一航局第三工程有限公司 | Large-volume concrete circulation cooling system |
| CN104785904A (en) * | 2015-04-01 | 2015-07-22 | 中石化工建设有限公司 | Technology for installing pre-buried bolts to large-scale air separation device cold box |
| CN105418006A (en) * | 2015-11-30 | 2016-03-23 | 湖北大学 | Temperature gradient controlled mass concrete for bridges |
| WO2016127408A1 (en) * | 2015-02-13 | 2016-08-18 | 南通大学 | Electronic temperature measuring construction method for massive concrete |
| CN106082818A (en) * | 2016-06-15 | 2016-11-09 | 江苏燕宁建设工程有限公司 | Concrete and making, construction method |
| CN107268780A (en) * | 2017-07-31 | 2017-10-20 | 北京兆阳光热技术有限公司 | The method for pouring set of heat exchange tubes |
| CN108086339A (en) * | 2017-12-13 | 2018-05-29 | 中国冶集团有限公司 | Utilize the pipe-line system and its control method of the water curing mass concrete in dewatering well |
| CN108104126A (en) * | 2017-11-03 | 2018-06-01 | 湖北宣鹤高速公路有限公司 | The anti-seam temperature control casting method and structure of sole plate mass concrete |
| CN108517778A (en) * | 2018-03-23 | 2018-09-11 | 中国五冶集团有限公司 | Be conducive to the template and application method of bridge pier concrete curing |
| CN108797362A (en) * | 2018-07-09 | 2018-11-13 | 贵州新联爆破工程集团有限公司 | One kind pouring mass concrete heat sink |
| CN109338895A (en) * | 2018-11-23 | 2019-02-15 | 中铁十二局集团第工程有限公司 | Mass concrete Intelligent Hybrid cooling system |
| CN109812034A (en) * | 2019-01-31 | 2019-05-28 | 青岛一建集团有限公司 | A kind of cooling for large volume casting concrete structural body, moisture retention construction method |
| CN111188407A (en) * | 2020-01-13 | 2020-05-22 | 湖南省衡洲建设有限公司 | Construction process for solving cracks caused by temperature difference of mass concrete |
| CN111470812A (en) * | 2020-06-02 | 2020-07-31 | 陕西秦汉恒盛新型建材科技股份有限公司 | C50P10 large-volume concrete for construction of small-inclination elephant trunk of deep foundation pit |
| CN111499258A (en) * | 2020-04-07 | 2020-08-07 | 上海同济检测技术有限公司 | Photosensitive controllable fast-hardening concrete pouring material and construction method |
| CN111910653A (en) * | 2020-08-14 | 2020-11-10 | 河南省出山店水库管理局 | Anti-cracking method for quickly backfilling large-volume concrete in large deep and long defect groove |
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| CN112922145A (en) * | 2021-01-22 | 2021-06-08 | 成都建工装饰装修有限公司 | Cooling construction method for mass concrete earthquake table |
| CN113235451A (en) * | 2021-06-10 | 2021-08-10 | 惠州晖华混凝土有限公司 | Construction method of mass concrete |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004360333A (en) * | 2003-06-05 | 2004-12-24 | Sumitomo Mitsui Construction Co Ltd | Pipe cooling method for mass concrete |
| CN101638940A (en) * | 2009-05-26 | 2010-02-03 | 中冶集团华冶资源开发有限责任公司 | Large plate mass concrete seamless construction method |
| CN101701495A (en) * | 2009-09-28 | 2010-05-05 | 中国葛洲坝集团股份有限公司 | Individualized circulation method for temperature control of bulk concrete |
| CN101781931A (en) * | 2010-01-21 | 2010-07-21 | 中铁二十局集团有限公司 | Construction method of large-volume concrete bearing platform with one-time pouring in winter |
-
2010
- 2010-09-30 CN CN 201010299156 patent/CN101962997A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004360333A (en) * | 2003-06-05 | 2004-12-24 | Sumitomo Mitsui Construction Co Ltd | Pipe cooling method for mass concrete |
| CN101638940A (en) * | 2009-05-26 | 2010-02-03 | 中冶集团华冶资源开发有限责任公司 | Large plate mass concrete seamless construction method |
| CN101701495A (en) * | 2009-09-28 | 2010-05-05 | 中国葛洲坝集团股份有限公司 | Individualized circulation method for temperature control of bulk concrete |
| CN101781931A (en) * | 2010-01-21 | 2010-07-21 | 中铁二十局集团有限公司 | Construction method of large-volume concrete bearing platform with one-time pouring in winter |
Non-Patent Citations (2)
| Title |
|---|
| 《天津冶金》 20071231 朱忠来等 3200m3高炉工程大体积混凝土施工技术 40-42 1-4 , 第S1期 2 * |
| 《科技风》 20100331 肖策等 高炉基础大体积混凝土水冷却温度控制技术施工工法 69，89 1-4 , 第6期 2 * |
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| CN102410029A (en) * | 2011-12-30 | 2012-04-11 | 中铁二院工程集团有限责任公司 | Mass hollow concrete tunnel lining structure |
| CN102587404A (en) * | 2012-02-09 | 2012-07-18 | 中国十九冶集团有限公司 | Construction method for large-sized blast furnace foundation |
| CN102587404B (en) * | 2012-02-09 | 2014-11-05 | 中国十九冶集团有限公司 | Construction method for large-sized blast furnace foundation |
| CN102704483A (en) * | 2012-02-26 | 2012-10-03 | 成都市第六建筑工程公司 | Method for taking cooling pipe network as building bottom plate multi-layer reinforced support frame |
| CN102704483B (en) * | 2012-02-26 | 2013-06-05 | 成都市第六建筑工程公司 | Method for taking cooling pipe network as building bottom plate multi-layer reinforced support frame |
| CN102619236A (en) * | 2012-04-26 | 2012-08-01 | 中国化学工程第四建设有限公司 | Compound type ice chest foundation construction method |
| CN102747742A (en) * | 2012-07-24 | 2012-10-24 | 武汉大学 | Construction method for large-volume concrete structure of bridge loading platform |
| CN102747742B (en) * | 2012-07-24 | 2014-05-21 | 武汉大学 | Construction method for large-volume concrete structure of bridge loading platform |
| WO2014139252A1 (en) * | 2013-03-15 | 2014-09-18 | 中国十七冶集团有限公司 | Method for constructing large raft foundation in high-temperature environment |
| CN104060612A (en) * | 2013-03-22 | 2014-09-24 | 中国水电顾问集团贵阳勘测设计研究院 | Temperature control method and device for severe cold winter construction of concrete dam |
| CN104060612B (en) * | 2013-03-22 | 2016-06-08 | 中国水电顾问集团贵阳勘测设计研究院 | For temperature control method and the device of concrete dam severe cold winter construction |
| CN103225286B (en) * | 2013-04-25 | 2015-07-01 | 中国电建集团成都勘测设计研究院有限公司 | Dam body structure of concrete gravity dam and regional coordination and temperature reduction method |
| CN103225286A (en) * | 2013-04-25 | 2013-07-31 | 中国水电顾问集团成都勘测设计研究院 | Dam body structure of concrete gravity dam and regional coordination and temperature reduction method |
| CN103866982A (en) * | 2014-03-30 | 2014-06-18 | 青岛一建集团有限公司 | Petal artistic framework construction method |
| CN103866982B (en) * | 2014-03-30 | 2016-08-24 | 青岛一建集团有限公司 | A kind of petal art framework construction method |
| CN104563514A (en) * | 2014-12-05 | 2015-04-29 | 中交一航局第三工程有限公司 | Large-volume concrete circulation cooling system |
| CN104563514B (en) * | 2014-12-05 | 2017-01-25 | 中交一航局第三工程有限公司 | Large-volume concrete circulation cooling system |
| CN104481150A (en) * | 2014-12-21 | 2015-04-01 | 北京工业大学 | Assembly type circulating water cooling slot for controlling large-size concrete cracks and manufacturing method |
| WO2016127408A1 (en) * | 2015-02-13 | 2016-08-18 | 南通大学 | Electronic temperature measuring construction method for massive concrete |
| CN104785904B (en) * | 2015-04-01 | 2017-03-22 | 中石化工建设有限公司 | Technology for installing pre-buried bolts to large-scale air separation device cold box |
| CN104785904A (en) * | 2015-04-01 | 2015-07-22 | 中石化工建设有限公司 | Technology for installing pre-buried bolts to large-scale air separation device cold box |
| CN105418006A (en) * | 2015-11-30 | 2016-03-23 | 湖北大学 | Temperature gradient controlled mass concrete for bridges |
| CN106082818A (en) * | 2016-06-15 | 2016-11-09 | 江苏燕宁建设工程有限公司 | Concrete and making, construction method |
| CN107268780A (en) * | 2017-07-31 | 2017-10-20 | 北京兆阳光热技术有限公司 | The method for pouring set of heat exchange tubes |
| CN108104126A (en) * | 2017-11-03 | 2018-06-01 | 湖北宣鹤高速公路有限公司 | The anti-seam temperature control casting method and structure of sole plate mass concrete |
| CN108086339A (en) * | 2017-12-13 | 2018-05-29 | 中国冶集团有限公司 | Utilize the pipe-line system and its control method of the water curing mass concrete in dewatering well |
| CN108517778B (en) * | 2018-03-23 | 2023-10-03 | 中国五冶集团有限公司 | Template beneficial to bridge pier concrete maintenance and application method thereof |
| CN108517778A (en) * | 2018-03-23 | 2018-09-11 | 中国五冶集团有限公司 | Be conducive to the template and application method of bridge pier concrete curing |
| CN108797362A (en) * | 2018-07-09 | 2018-11-13 | 贵州新联爆破工程集团有限公司 | One kind pouring mass concrete heat sink |
| CN109338895A (en) * | 2018-11-23 | 2019-02-15 | 中铁十二局集团第工程有限公司 | Mass concrete Intelligent Hybrid cooling system |
| CN109812034A (en) * | 2019-01-31 | 2019-05-28 | 青岛一建集团有限公司 | A kind of cooling for large volume casting concrete structural body, moisture retention construction method |
| CN111188407A (en) * | 2020-01-13 | 2020-05-22 | 湖南省衡洲建设有限公司 | Construction process for solving cracks caused by temperature difference of mass concrete |
| CN111499258A (en) * | 2020-04-07 | 2020-08-07 | 上海同济检测技术有限公司 | Photosensitive controllable fast-hardening concrete pouring material and construction method |
| CN111470812A (en) * | 2020-06-02 | 2020-07-31 | 陕西秦汉恒盛新型建材科技股份有限公司 | C50P10 large-volume concrete for construction of small-inclination elephant trunk of deep foundation pit |
| CN111910641A (en) * | 2020-08-14 | 2020-11-10 | 河南省出山店水库管理局 | Mass concrete anti-cracking method under spring pouring condition of strong base rock strong constraint area |
| CN111910653A (en) * | 2020-08-14 | 2020-11-10 | 河南省出山店水库管理局 | Anti-cracking method for quickly backfilling large-volume concrete in large deep and long defect groove |
| CN112835393A (en) * | 2021-01-06 | 2021-05-25 | 中铁大桥局集团有限公司 | Mass concrete temperature control system and method |
| CN112835393B (en) * | 2021-01-06 | 2022-04-01 | 中铁大桥局集团有限公司 | Mass concrete temperature control system and method |
| CN112922145A (en) * | 2021-01-22 | 2021-06-08 | 成都建工装饰装修有限公司 | Cooling construction method for mass concrete earthquake table |
| CN113235451A (en) * | 2021-06-10 | 2021-08-10 | 惠州晖华混凝土有限公司 | Construction method of mass concrete |
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