CN106747075A - A kind of water-proof concrete, concrete component and preparation method thereof - Google Patents
A kind of water-proof concrete, concrete component and preparation method thereof Download PDFInfo
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- CN106747075A CN106747075A CN201611104611.6A CN201611104611A CN106747075A CN 106747075 A CN106747075 A CN 106747075A CN 201611104611 A CN201611104611 A CN 201611104611A CN 106747075 A CN106747075 A CN 106747075A
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
- B28B11/245—Curing concrete articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
- B28B13/04—Discharging the shaped articles
- B28B13/06—Removing the shaped articles from moulds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
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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
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
Abstract
The invention discloses a kind of water-proof concrete, including following components：42.5R Portland cements, foaming agent, coagulant, water reducer, foam stabilizer, waterproofing agent and Nano-meter SiO_22.The invention also discloses a kind of concrete component glue and preparation method thereof.Water-proof concrete inner cell of the invention becomes more tiny, homogeneous, and sphericity increases, connected ratio reduction between abscess；Plastic shrinkage cracking value have dropped 82.1%, and more than 2 grades cracks disappear in plastic shrinkage cracks, and 1 grade of crack ratio is up to 70.1%；The anti-foldings of 3d, compression strength increased respectively 41.7% and the anti-folding of 16.0%, 28d, compression strength increased 25.0% and 10.0% respectively；Certain bearing capacity and preferable vacation ductility can be kept after being split at the beginning of sample within a period of time, bent toughness is significantly improved.
Description
Technical field
The present invention relates to building field, more precisely a kind of water-proof concrete, concrete component and preparation method thereof.
Background technology
Since A Sipuding (J.Aspdin) invention Portland cement in 1824, cement-based material largely makes in engineering
With the history for having had nearly 200 years, cement-based material has become the modern projects such as civil engineering, hydraulic engineering, communications and transportation
The important feature material of structure.Cement-based material be in civil engineering purposes most extensively, the maximum construction material of consumption it
One, it is that the development and progress of the mankind is made that particularly important contribution.With the hair of the labyrinth such as large span in civil engineering
Exhibition and engineering-environment become increasingly complex, people to the service behaviour of cement-based material, intensity, impermeability, durability and
Intellectuality etc. is proposed requirement higher.
Concrete can play certain waterproof action in building structure, so the extensive use in water proof building.However,
In many engineering projects, concrete does not reach expected waterproof effect, causes many building structure to exist serious
Drainage, great inconvenience is brought to production and living.Meanwhile, leak corrosion reinforcing bar to a certain extent damages building,
Cause potential safety hazard.Additionally, regular maintenance mending-leakage increases economic expenditure, good effect may not be also received.
With the development of modern society, the utilization of the underground space has been in the gesture of popularization, and the requirement to waterproof technique is increasingly
It is high.In engineering practice, the engineering of deep basal pit is more and more, and hydraulic pressure is increasing, and waterproof is more and more difficult, original waterproof material
It is not fully up to expectations.Market needs new technology and new material to solve this problem.
The content of the invention
It is an object of the invention to provide a kind of water-proof concrete, concrete component and preparation method thereof, it can solve existing
There is the disadvantages mentioned above in technology.
The present invention uses following technical scheme：
A kind of water-proof concrete, including following components：
42.5R Portland cements, foaming agent, coagulant, water reducer, foam stabilizer, waterproofing agent and nanosized SiO_2.
The mass fraction of each component is：It is 100 parts of cement, the ratio of mud 0.44,7 parts of foaming agent, compound 2.25 parts of coagulant, steady
3 parts of infusion, 0.09 part of polycarboxylate water-reducer, 2 parts of odium stearate, 2 parts of nanosized SiO_2.
Compound coagulant includes the following each component of mass fraction：2.5 parts of inorganic salts NC and 0.05 part of triethanolamine.
Also include reinforcing fiber, and the reinforcing fiber is prepared by following raw material：First component polyolefin 43~64
Part, the second 41~62 parts of component polyolefin, 22~53 parts of filler, 1.1~2.2 parts of coupling agent.
The first component polyolefin is propylene-ethylene bipolymer, the alpha-olefin-second through polymerization catalyzed by metallocene
Alkene bipolymer or propylene-ethylene-butene terpolymer；The second component polyolefin is melt index for 0.2~
5.2 LLDPE, low density polyethylene (LDPE) or polypropylene；Described filler is the lightweight of 1250 mesh~5000 mesh
Calcium carbonate, powdered whiting, magnesium hydroxide or aluminium hydroxide；Described coupling agent is titanate esters or aluminate coupling agent.
A kind of concrete component, it is prepared by water-proof concrete.
A kind of preparation method of concrete component, comprises the following steps：
Mold Making, physical dimension according to prefabricated components selects the sheet material of mould；
Reinforcing bar colligation, according to the arrangement of reinforcement of component, to reinforcing bar numbering sign, blanking and setting-out, the reinforcing bar per type is both needed to
Numbering sign, and numbering is unique, and reinforcing bar is stacked respectively, so that banding steel cage is used, reinforcement cage skeleton is tied up
Bundle is carried out in prefabricated steelframe, and steelframe need to make according to component profile diagram, note setting protection interlamellar spacing；Have on steelframe
The relative position of cage bar and distribution reinforcing bar is indicated；
The installation of built-in fitting and positioning, the thin groove of transverse and longitudinal, the groove, in template processing and making process are carved in template basal surface
In need to consider, and, after after formed product depanning, bullet should be printed according to trace as the inspection whether qualified important content of mould
Line, and the indoor surface of product is guided to, the line provides important references line during installation；
Pour and the maintenance of concrete, each prefabricated components product is in casting process, while one group of test block is made, with product
Cured under same condition, in case laboratory pressure testing is sent during form removal, can form removal lifting, otherwise continuation maintenance；
The demoulding, component is completed in horizontal mold to pour, after concrete reaches some strength, the level lifting demoulding；
Flat stripper member can both complete the making of horizontal member, it is also possible to complete the making of vertical member, if vertical member, then need
Component is turned into vertical state by overturning table apparatus, to facilitate subsequent treatment, transport and in-site installation；
The storage and transport of product, the product after depanning after upset normotopia, need to fix stacking, root by shelf are stacked
The characteristics of according to product, shelf can be designed and stack product in pairs, be conducive to stabilization, while also saving space and cost of transportation.
It is an advantage of the invention that：Water-proof concrete inner cell of the invention becomes more tiny, homogeneous, and sphericity increases
Connected ratio reduction between height, abscess；Plastic shrinkage cracking value have dropped 82.1%, and more than 2 grades cracks disappear in plastic shrinkage cracks,
1 grade of crack ratio is up to 70.1%；The anti-foldings of 3d, compression strength increased 41.7% and the anti-folding of 16.0%, 28d, pressure resistance respectively
Degree increased 25.0% and 10.0% respectively；Certain bearing capacity and preferably can be kept after being split at the beginning of sample within a period of time
False ductility, bent toughness is significantly improved, also with fire-proof function.
Specific embodiment
Specific embodiment of the invention is further elucidated below：
A kind of water-proof concrete, including following components：
42.5R Portland cements, foaming agent, coagulant, water reducer, foam stabilizer, waterproofing agent and nanosized SiO_2.
The mass fraction of each component is：It is 100 parts of cement, the ratio of mud 0.44,7 parts of foaming agent, compound 2.25 parts of coagulant, steady
3 parts of infusion, 0.09 part of polycarboxylate water-reducer, 2 parts of odium stearate, 2 parts of nanosized SiO_2.
Compound coagulant includes the following each component of mass fraction：2.5 parts of inorganic salts NC and 0.05 part of triethanolamine.
Also include reinforcing fiber, and the reinforcing fiber is prepared by following raw material：First component polyolefin 43~64
Part, the second 41~62 parts of component polyolefin, 22~53 parts of filler, 1.1~2.2 parts of coupling agent.
The first component polyolefin is propylene-ethylene bipolymer, the alpha-olefin-second through polymerization catalyzed by metallocene
Alkene bipolymer or propylene-ethylene-butene terpolymer；The second component polyolefin is melt index for 0.2~
5.2 LLDPE, low density polyethylene (LDPE) or polypropylene；Described filler is the lightweight of 1250 mesh~5000 mesh
Calcium carbonate, powdered whiting, magnesium hydroxide or aluminium hydroxide；Described coupling agent is titanate esters or aluminate coupling agent.
A kind of concrete component, it is prepared by water-proof concrete.
A kind of preparation method of concrete component, comprises the following steps：
Mold Making, physical dimension according to prefabricated components selects the sheet material of mould；
Reinforcing bar colligation, according to the arrangement of reinforcement of component, to reinforcing bar numbering sign, blanking and setting-out, the reinforcing bar per type is both needed to
Numbering sign, and numbering is unique, and reinforcing bar is stacked respectively, so that banding steel cage is used, reinforcement cage skeleton is tied up
Bundle is carried out in prefabricated steelframe, and steelframe need to make according to component profile diagram, note setting protection interlamellar spacing；Have on steelframe
The relative position of cage bar and distribution reinforcing bar is indicated；
The installation of built-in fitting and positioning, the thin groove of transverse and longitudinal, the groove, in template processing and making process are carved in template basal surface
In need to consider, and, after after formed product depanning, bullet should be printed according to trace as the inspection whether qualified important content of mould
Line, and the indoor surface of product is guided to, the line provides important references line during installation；
Pour and the maintenance of concrete, each prefabricated components product is in casting process, while one group of test block is made, with product
Cured under same condition, in case laboratory pressure testing is sent during form removal, can form removal lifting, otherwise continuation maintenance；
The demoulding, component is completed in horizontal mold to pour, after concrete reaches some strength, the level lifting demoulding；
Flat stripper member can both complete the making of horizontal member, it is also possible to complete the making of vertical member, if vertical member, then need
Component is turned into vertical state by overturning table apparatus, to facilitate subsequent treatment, transport and in-site installation；
The storage and transport of product, the product after depanning after upset normotopia, need to fix stacking, root by shelf are stacked
The characteristics of according to product, shelf can be designed and stack product in pairs, be conducive to stabilization, while also saving space and cost of transportation.
Embodiment
First 60 parts of component polyolefin, 40 parts of the second component polyolefin, 30 parts of filler, 1 part of coupling agent, photomask agent 5
Part, 0.5 part of antioxidant, 0.5 part of light stabilizer, the first described component polyolefin, are with the propylene-ethylene two of metallocene catalysis
Membered copolymer, alpha-olefin-ethene bipolymer or propylene-ethylene-butene terpolymer.Commercially available prod can be used,
Such as DOW Chemical VERSIFY 2300,2400, this kind of TPO can provide excellent flexibility, puncture resistance and weldability etc..
The second described component polyolefin, is that melt index is 0.5~5 LLDPE, low density polyethylene (LDPE)
Or polypropylene.Commercially available prod, such as Yangtze petrochemical industry LLDPE 7042, random polypropylene K8003 can be used.This
Resinoid can improve mechanical performance, heat resistance etc..Described filler, is precipitated calcium carbonate, the heavy of 1250~5000 mesh
Calcium carbonate, magnesium hydroxide or aluminium hydroxide.The fire-retardant of waterproof roll can be improved when using magnesium hydroxide or aluminium hydroxide
Property.Described coupling agent is titanate esters or aluminate coupling agent.1 part of coupling agent high-speed stirred is added in 30 parts of fillers,
Surface activation process is carried out to filler.After treatment, resin and filler interface binding power can be improved, such that it is able to minimum
Influence of the degree reduction to the mechanical performance of waterproof roll.
The nano silicon that the nano material used in the present invention is used, its examining report list is shown in Table 1,
| Inspection project | Quality standard | Measured result |
| Outward appearance | White powder | |
| Average grain diameter | 50±5 | 50 |
| Specific surface area, m2/g | 200±30 | 200 |
| Content % | ≥99.5 | 99.7 |
| PH value | 5-7 | 6.8 |
| Calcination loss (%) 950 × 2h | ≤6 | 2.3 |
| Arsenic (ppm) ,≤ | 1.0 | It is qualified |
| Lead (ppm) ,≤ | 1.0 | It is qualified |
Concrete formation and maintenance process
Using National Standard of the People's Republic of China GB/T50081.2002《Normal concrete mechanical test method mark
It is accurate》, the selection of raw material, selection of die trial etc. are carried out, step is as follows：
The test specimen of compressive strength test is the cube of 100mm × 100mm × 100mm, this criteria of right and wrong test specimen, so
Dimension conversion coefficient O.95 is multiplied by when data processing.The test specimen of impermeability test is upper bore 175mm, lower relative aperture 185mm,
The round estrade of 150mm high.The test specimen of anti-carbonation experiment is the prism of 100mm × 100mm × 400mm.Chloride-penetration resistance is tried
The test specimen tested is 100mm × 100mmx50mm prisms, and the test specimen directly directly cuts from anti-carbonation test specimen during experiment
Obtain.
Sealed with preservative film within die-filling first day, prevent the evaporation of moisture.After form removal, each test specimen is numbered, and be put into
Fog room conserves (2 DEG C of 20 scholar of temperature, relative humidity more than 95%).During maintenance, test specimen is completely soaked in water, and seen in real time
Examine and add water, it is to avoid because moisture evaporation makes test specimen be exposed in air.When predetermined age is reached, related test specimen is taken out and is done
Corresponding experiment.
Fluidity testing method
Concrete flowability is characterized using the slump, and the slump of concrete is tested according to GB factories r50080.2002
《Standard for test methods of properties of ordinary concrete mixture standard》.Before test, slump cone inwall and tamper are soaked with wet cloth, and
Cylinder top plus funnel, are placed on iron plate, and pedal, fixed position are tracked tramping with both feet.Three layers of mixed concrete point is taken to load in cylinder,
It is about high 1/3 of cylinder per layer height, every layer of all tamper is plugged and pounded 25 times, and plug and pound spirality is carried out by export-oriented center, is respectively plugged and pounded a little
All should be uniformly distributed on interface.Tamper should run through entire depth when plugging and pounding bottom, and when plugging and pounding the second layer and top layer, tamper should be inserted
Wear this layer to lower layer of surface.When top layer is plugged and pounded, it should be noted that plus concrete, it is not less than slump cone top layer, plug and pound
Cheng Hou, it is floating with spatula.After removing the concrete on the floor of cylinder side, vertically slump cone is smoothly lifted in the 10s of 5s mono-.With two
Steel ruler measuring cylinder is high and tries the difference in height between body peak, and this value is the slump.
Measured Results of Thermal Conductivity
Sample dimensions are 300mmx300mmx25mm.By method described in density measurement, test specimen is dried to constant weight and cold
But to room temperature.Take two test specimens to be placed in the intelligent double flat plate thermal conductivity measuring apparatus of IM.DRY 3001, according to IM-DRY
The operational procedure of 3001 intelligent double flat plate thermal conductivity measuring apparatus, tests out this two thermal conductivity factors of test specimen.Product is led
Hot coefficient is two arithmetic mean of instantaneous values of test specimen thermal conductivity factor, is accurate to 0.001W/ (mk).
Microscopic performance test
It is micro- using QUANTA FEG 250 models SEM and OLYMPUS FE-45 types digital camera observation sample
See pattern；Sample infrared spectrum is measured using the Fourier transformation type infrared spectrometers of Nicolet 380.
Mix different amounts of nano Si 02Afterwards, electric flux has and largely reduces, and the resistance of concrete to chloride ion penetration is obtained
Significantly improve.Secondly, different amounts of nano Si 0 is mixed2, each group of data Changing Pattern is obvious, the content of nano material it is many
Few power to the resistance of concrete to chloride ion penetration is without obvious linear relationship.
Water-proof concrete inner cell of the invention becomes more tiny, homogeneous, and sphericity increases, connected ratio drop between abscess
It is low；Plastic shrinkage cracking value have dropped 82.1%, and more than 2 grades cracks disappear in plastic shrinkage cracks, and 1 grade of crack ratio is up to
70.1%；The anti-foldings of 3d, compression strength increased respectively 41.7% and the anti-folding of 16.0%, 28d, compression strength increased respectively
25.0% and 10.0%；Certain bearing capacity and preferable vacation ductility, bending can be kept after being split at the beginning of sample within a period of time
Toughness is significantly improved.
The invention also discloses a kind of concrete component, it is prepared by the following method and obtains：
1st, Mold Making.
Physical dimension according to prefabricated components selects the sheet material of mould, if scantling greatly if select the thick steel of some
Material, can bear larger power, and no side member is easily deformed.Ensure side, angle, the face of the component not cracky in form removal, also protect
Card mould is easy in form removal, group mould.Mould is transported to after element factory, it is necessary to polish mould, while mould inside
It is polished, also the gap adhesive tape pad of mould corner is sealed well, in order to avoid the outward appearance and intensity of influence component.Mould is to determine
The deciding factor of component quality is determined, while the rationalization of mold design will also greatly improve the production efficiency of component.
2nd, reinforcing bar colligation
According to the arrangement of reinforcement of component, to reinforcing bar numbering sign, blanking and setting-out, the reinforcing bar per type is both needed to numbering sign,
And numbering is unique, reinforcing bar is stacked respectively, so that banding steel cage is used.The colligation of reinforcement cage skeleton is prefabricated
Steelframe in carry out, steelframe need to make according to component profile diagram, note setting protection interlamellar spacing；Have on steelframe paint (or weldering
Connect mark) relative position of cage bar and distribution reinforcing bar has been indicated, while being conducive to controlling the quality of steel reinforcement cage, improve work effect
Rate；Steelframe need to have eye-catching sign, be taken with facilitating, in order to avoid hanging wrong steel reinforcement cage, need to be hung by suspension bracket handling or many suspension centres
Fortune, in order to avoid cause the deformation of steel reinforcement cage or even fall apart.
3rd, the installation of built-in fitting and positioning
In prefabricated components product, the species of built-in fitting is a lot, but is summed up and can be divided into：Permanent structure built-in fitting,
Provisional lifting is pre-buried with stacking built-in fitting, electric type built-in fitting, plumbing built-in fitting, coal gas class built-in fitting and ground wire
Part.The installation of built-in fitting is mainly fixed on the plate of mould side, or is fixed using suspension rod, or is fixed on bed die, it could be theoretically argued that
Required precision can be met using the method positioning, but found in practice process, other plate is easily deformed and causes relative position wrong
Position, therefore, engineering quality detection personnel need to check one by one.In addition, for convenience of component install when be accurately positioned, controlled level absolute altitude and hang down
Straight degree, the thin groove of transverse and longitudinal is carved in template basal surface, and the groove needs to consider in template processing and making process, and should conduct
The whether qualified important content of inspection mould.After after formed product depanning, snap the line is printed according to trace, and guide to the interior of product
Face, the line provides important references line during installation.The position setting of suspension centre need to consider level and vertical balance, engineer after lifting
The 3 dimensional drawing of single products can be drawn to determine center of gravity, so that arrangement Heave Here symmetrically and evenly, it is ensured that product after lifting
Angle of inclination is advisable no more than 15 degree.
The way of exterior wall tile has two kinds：1. it is that, in template bottom surface, specific practice is as follows as installation of embedded parts：Selection determines
Face brick mould lattice one are put into face brick insertion customization dividing strip one drum rolling one in mould lattice and paste protection sheet one with special
Brush brush cements the solid plate face brick shaped article of a specific purpose tool pressure viscosity dividing strip one；2. it is rear tiling, product is deposited in freight house
During place, control line is played, paste ceramic tile, jointing is simultaneously packed.The former one-shot forming, can guarantee that the power of pasting of ceramic tile, and the latter can be very
The height of good control ceramic tile seam, it is ensured that product installs the consistent of rear brickwork joint, it is ensured that building is attractive in appearance.
4th, concrete is poured and maintenance
Concrete can typically use hopper cloth, concrete slump to take 125+-25mm；Outer shake machine vibrates or plug-in type is shaken
Stamper vibrates；When temperature is less than 12 DEG C, can use
Steam curing, to shorten the production cycle, improve production efficiency.Each prefabricated components product in casting process, while
One group of (may generally be 2) test block is made, with the same bar of product
Part is conserved, in case sending laboratory pressure testing during form removal, when some strength (being set to 15MPa in practice) is reached, can be torn open
Mould is lifted by crane, and otherwise continues to conserve.It is (such as outer balcony, floor, outer for prefabricated components with cast-in-place wall junction and iterative structure
Wall concrete blinding etc.), need dabbing to process at structural joint, also concrete curing about 64 can be poured using spraying retarder, when
After carry out bath and do the wash, allow aggregate totally to expose, form good concrete joint face.
5th, the demoulding
The component demoulding typically has two ways：Ping Tuofa and inversion method.One " Ping Tuofa moulds " refers in level by component
Complete to pour in mould, after concrete reaches some strength (being usually not less than 15MPa), the level lifting demoulding；The flat demoulding
Tool can both complete the making of horizontal member, it is also possible to complete the making of vertical member, if vertical member, then need to pass through
Component is turned into vertical state by upset table apparatus, to facilitate subsequent treatment, transport and in-site installation.The Mold Making technique
Relatively easy steel using amount is less；But due to can not just be overturn in situ after the demoulding, need to be vertical by it by overturning table apparatus, it is this
Need relatively many hall space and overturn operation more, extra paying is needed in artificial and mechanical one-shift.Two " roll-over table method moulds
Tool " refers to complete in horizontal mold component to pour, after concrete reaches some strength (usually not low 15MPa), both
The demoulding can be lifted by crane with level, it is also possible to after the turning device that mould is carried overturns, vertical lifting form removal；The Mold Making work
Skill is relative complex, and steel using amount is larger；But due to can not just be overturn in situ after the demoulding, it is necessary to relatively many hall spaces are less,
Artificial and mechanical one-shift can be saved simultaneously.
6th, the storage and transport of product
Product after depanning, after upset normotopia, need to fix stacking by shelf are stacked, and according to the characteristics of product, can set
Meter shelf stack product in pairs, are conducive to stabilization, while also saving space and cost of transportation.The transport of product relies primarily on vapour
Car overland transport, therefore, (general overpass limit for height is 5m) is influenceed by urban viaduct and tunnel, selection means of transport with
And when stacking shelf, need to especially consider, while needing to reinforce product and protection
Because active force of the concrete during solidification is hardened is very big, this just determines that the material of mould will have enough
Intensity and hardness, be essentially limited to steel.
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, it is all in essence of the invention
Any modification, equivalent and improvement made within god and principle etc., should be included within the scope of the present invention.
Claims (7)
1. a kind of water-proof concrete, it is characterised in that including following components：
42.5R Portland cements, foaming agent, coagulant, water reducer, foam stabilizer, waterproofing agent and Nano-meter SiO_22。
2. water-proof concrete according to claim 1, it is characterised in that the mass fraction of each component is：
100 parts of cement, the ratio of mud 0.44,7 parts of foaming agent, compound 2.25 parts of coagulant, 3 parts of foam stabilizer, polycarboxylate water-reducer
0.09 part, 2 parts of odium stearate, Nano-meter SiO_222 parts.
3. water-proof concrete according to claim 2, it is characterised in that compound coagulant includes following each of mass fraction
Component：2.5 parts of inorganic salts NC and 0.05 part of triethanolamine.
4. the water-proof concrete according to any one in claims 1 to 3, it is characterised in that also including reinforcing fiber, and institute
Reinforcing fiber is stated to be prepared by following raw material：First 43~64 parts of component polyolefin, the second 41~62 parts of component polyolefin, fills out
Fill 22~53 parts of agent, 1.1~2.2 parts of coupling agent.
5. the water-proof concrete according to claim 4, it is characterised in that the first component polyolefin is urged through metallocene
Change propylene-ethylene bipolymer, alpha-olefin-ethene bipolymer or the propylene-ethylene-butene ternary polymerization of polymerization
Thing；The second component polyolefin is the LLDPE that melt index is 0.2~5.2, low density polyethylene (LDPE) or poly-
Propylene；Described filler is precipitated calcium carbonate, powdered whiting, magnesium hydroxide or the hydroxide of 1250 mesh~5000 mesh
Aluminium；Described coupling agent is titanate esters or aluminate coupling agent.
6. a kind of concrete component, it is prepared by the water-proof concrete of any one in such as claim 1 to 5.
7. a kind of preparation method for preparing concrete component as claimed in claim 6, it is characterised in that
Mold Making, physical dimension according to prefabricated components selects the sheet material of mould；
Reinforcing bar colligation, according to the arrangement of reinforcement of component, to reinforcing bar numbering sign, blanking and setting-out, the reinforcing bar per type is both needed to numbering
Sign, and numbering is unique, and reinforcing bar is stacked respectively, so that banding steel cage is used, the colligation of reinforcement cage skeleton exists
Carried out in prefabricated steelframe, steelframe need to make according to component profile diagram, note setting protection interlamellar spacing；There is sign on steelframe
The relative position of good cage bar and distribution reinforcing bar；
The installation of built-in fitting and positioning, the thin groove of transverse and longitudinal is carved in template basal surface, and the groove is needed in template processing and making process
Consider, and, after after formed product depanning, snap the line should be printed according to trace as the whether qualified important content of inspection mould, and
And the indoor surface of product is guided to, the line provides important references line during installation；
Pour and the maintenance of concrete, each prefabricated components product is in casting process, while one group of test block is made, with the same bar of product
Part is conserved, in case laboratory pressure testing is sent during form removal, can form removal lifting, otherwise continuation maintenance；The demoulding, by component in horizontal mold
Interior completion is poured, after concrete reaches some strength, the level lifting demoulding；Flat stripper member can both complete the system of horizontal member
Make, it is also possible to complete the making of vertical member, if vertical member, then need by overturn table apparatus component is turned into it is perpendicular
To state, to facilitate subsequent treatment, transport and in-site installation；
The storage and transport of product, the product after depanning after upset normotopia, need to fix stacking, according to product by shelf are stacked
The characteristics of product, shelf can be designed and stack product in pairs, be conducive to stabilization, while also saving space and cost of transportation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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