CN107640941A - The third newborn toughness reinforcing plastic concrete and preparation method with good deformation adaptability - Google Patents
The third newborn toughness reinforcing plastic concrete and preparation method with good deformation adaptability Download PDFInfo
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Abstract
The present invention provides a kind of third newborn toughness reinforcing plastic concrete and preparation method with good deformation adaptability, belongs to impervious concrete field of engineering technology.The plastic concrete is mixed by Portland cement, low liquid limit clay, the third breast, sand, stone, water and water reducer by following weight：70 parts of Portland cement, 30 parts of low liquid limit clay, the third 7~20 parts of breast, 450~470 parts of sand, 20 parts of stone, 100~108 parts of water, 0.7~0.8 part of water reducer.The plastic concrete that the present invention prepares is easy to get with raw material, with enough compression strength, modulus of elasticity/intensity than it is low, adaptive deformation ability is strong, anti-permeability performance is excellent, is easy to construction and the technical advantage such as environment friendly and pollution-free, available for buildings such as cut-pff walls.
Description
Technical field
The present invention relates to impervious concrete field of engineering technology, specifically a kind of third breast with good deformation adaptability
Toughness reinforcing plastic concrete and preparation method.
Background technology
Plastic concrete refer to it is a kind of by the raw material such as cement, water, clay, bentonite, sand, stone are agitated, slurry pours,
Condense the mixing material formed.
From material composition with terms of source, compared with normal concrete, the cement consumption of plastic concrete is very low, does not surpass typically
Cross 200kg/m3, cement 200kg/m can be saved compared with rigid concrete3~300kg/m3, economy is very notable；Plasticity is mixed
The material for also promoting plasticity in the binder materials of soil mixed with bentonite, clay etc. in addition to cement is coagulated, sometimes both materials
It can use simultaneously, wherein clay cement compared with bentonitic price is lower, and distribution is also relatively broad, can gather materials on the spot, just
In construction.
In terms of aspect of performance, compared with normal concrete, plastic concrete has certain compression strength, its compression strength
1~4MPa can be reached, be entirely capable of meeting the necessary intensity of cut-pff wall engineering, and the later strength of plastic concrete increase also compared with
It hurry up；The modulus of elasticity of plastic concrete is low, limiting strain is big, adapts to moderate finite deformation and is unlikely to produce inside wall very big
Stress, be advantageous to improve leakage proof wall stress state；Plastic concrete also has good anti-permeability performance, plastic concrete
Relative coefficient of permeability it is relatively low, typically between 10-7~10-9cm/s, and the anti-permeability performance of rigid concrete is close, even
Better than the anti-permeability performance of rigid concrete, the requirement of various scale earth-rock works seepage preventions disclosure satisfy that.
Development of the China about plastic concrete at present, which is substantially, takes reduction cement consumption, mixes clay or swelling again
Soil, part add a certain amount of sand, the technology path of stone aggregate also mixed with flyash.In Publication No. CN102617073A
State's patent of invention discloses a kind of Plastic concrete for cutoff wall, and its binder materials is by cement, bentonite, clay, flyash group
Into, due to being also additionally incorporated a certain amount of sand, stone aggregate and sand coarse aggregate ratio as 47%, prepare the obtained intensity of plastic concrete compared with
Height, but modulus of elasticity is also higher simultaneously, and modulus of elasticity/intensity as one of plastic concrete important indicator is higher, reduces
The adaptive deformation ability of plastic concrete.Publication No. CN1834054A Chinese invention patent discloses a kind of high strength, low elasticity
Anti-creepage, creeping proof wall material, including plastic concrete and Weathered Sand flexible material, wherein plastic concrete binder materials is by cement, powder
Coal ash, bentonite composition, the binder materials of Weathered Sand flexible material is made up of cement and bentonite, due to the glue of plastic concrete
Gel material total amount has reached 350kg/m3~370kg/m3, the binder total amount of Weathered Sand flexible material also reached 330kg/
m3, binder total amount and cement consumption are all higher, cause the decline of plastic concrete economy and rigidity increase.Publication No.
CN104386977A Chinese invention patent discloses a kind of backfill of high ferro roadbed damage zone micro- contraction plastic concrete and system
Preparation Method, it is made up of, is mainly used in a certain proportion of cement, aggregate, flyash, bentonite, swelling agent, water reducer, early strength agent
The backfill repairing of roadbed damage zone, the using of early strength agent and swelling agent cause the intensity of the plastic concrete higher and are in micro- shrinkage
Shape, this can also cause plastic concrete rigidity increase, the in addition use of flyash, the later strength amplification of the plastic concrete
It is larger, it can further reduce the ability of its adaptive deformation.
One of key property of plastic concrete is its change that there is certain flexibility can preferably adapt to adjacent material
The use of the flexible material such as shape, clay, bentonite can reduce cement consumption, and then the modulus of elasticity improvement for reducing concrete is mixed
Coagulate the plasticity of soil.The current binder materials for preparing plastic concrete use is mainly cement and bentonite, partly using clay, and
Bentonite and clay are required for buying processed finished products from producer substantially mostly using high liquid limit clay class.For being located in west
The engineerings such as the outlying district such as Tibetan, Xinjiang cut-pff wall, with purchasing that the flexible material haul distance such as clay, bentonite is remote, cost is high from other places,
If can gather materials on the spot make full use of it is local excavate the raw materials such as low liquid limit clay, can be obtained by the simple procedures such as drying, sieving
High-quality clay is directly used in preparation plastic concrete, has so not only widened the channel source of flexible material, also a saving work
Cheng Chengben, technology, economic benefit are very notable.
Present inventor has found during the present invention is realized by research：Third breast is a kind of high molecular polymer
Aqueous dispersion, anti-folding and tensile strength can be increased by adding cement-based material, increase ultimate elongation, and its elasticity is greatly reduced
Infiltration height under modulus and certain hydraulic pressure is notable with chloride permeability depth, toughness reinforcing anti-seepage effect.At present, the third breast is main uses
In preparing acrylamide sand grout, as antiseepage, anti-corrosion and patching material.In view of the material such as current bentonite, clay prepares plasticity coagulation
The modulus of elasticity of soil is still higher, it is difficult to is adapted with high water head, large deformation positions such as deep covering layer, batholiths, if can utilize
The toughness reinforcing plasticization effect of third breast, it is contemplated that can obviously improve the toughness and deformation adaptability of plastic concrete.
Relevant utilizing works excavate low liquid limit clay at present and the third newborn correlative study for preparing plastic concrete is not yet seen in
Report.
The content of the invention
It is an object of the invention to provide a kind of third newborn toughness reinforcing plastic concrete with good deformation adaptability and preparation
Method, its can gather materials on the spot makes full use of it is local excavate clay, can obtain the low liquid of high-quality by simply drying, sieving
Clay is limited, being aided with the plastic concrete that the third breast is prepared not only has enough intensity, and modulus of elasticity/intensity is than low, adaptation
Deformability is strong, anti-permeability performance is excellent and is easy to construct.
The present invention adopts the following technical scheme that realization：
A kind of third newborn toughness reinforcing plastic concrete with good deformation adaptability, by Portland cement, low liquid limit
Clay, the third breast, sand, stone, water and water reducer are mixed by following weight：70 parts of Portland cement, low liquid limit
30 parts of clay, the third 7~20 parts of breast, 450~470 parts of sand, 20 parts of stone, 100~108 parts of water, 0.7~0.8 part of water reducer.
Further, the Portland cement is 42.5 Portland cements for meeting GB175-2007.
Further, the liquid limit of the low liquid limit clay be 32.6%, plastic limit 17.8%, plasticity index 14.8, powder
Grain (0.075mm~0.005mm) content is 64%, and clay (0.005mm~0.002mm) content is 26%.
Further, third breast is acrylate copolymer emulsion, and its nonvolatile matter quality fraction is 47%, and pH value is
9.6, viscosity 1200mPas.
Further, the sand is the continuous grading artificial sand for meeting DL/T 5144-2015, and its particle diameter is less than 0.16mm
Content of stone powder be 20.7%, modulus of fineness 2.4, apparent density 2680kg/m3。
Further, the stone is to meet that DL/T 5144-2015 technical requirements particle size ranges 5mm~15mm's is artificial broken
Stone, apparent density 2710kg/m3。
Further, the water reducer is the PCA high performance water reducing agent of polyocarboxy acid for meeting GB 8076-2008.
A kind of preparation method with good the third newborn toughness reinforcing plastic concrete for deforming adaptability, comprises the following steps：
The calculating of step 1. Stock allotment right：Using the material usage of mass method computational plasticity concrete, tentatively recommend water
Shale amount and clay additive, sand, stone gross mass, and the respective quality of sand and stone are calculated according to sand coarse aggregate ratio；Pass through indoor trial mix, control
Controlling concrete slump, adjust and determine unit consumption of water, so as to obtain the dosage of each raw material in plastic concrete；
Step 2. prepares raw material according to the result of calculation of step 1, and Portland cement is weighed respectively according to parts by weight
70 parts, 30 parts of low liquid limit clay, the third 7~20 parts of breast, 450~470 parts of sand, 20 parts of stone, 0.7~0.8 part of water reducer, water 100~
108 parts, and water reducer is dissolved in water；
Step 3. first will sequentially add forced action type by the load weighted raw material of step 2 by the order of sand, cement, clay, stone
Mixer, mixer stirring 30s is started, then add the third breast and be dissolved in the water reducer of water, then start mixer stirring 2min；
The concrete batching system mixed and stirred in step 3 is discharged on steel plate by step 4., is scraped and is cohered mixing on mixer
And thing, manually turn 2~3 times, you can plastic concrete is made.
Further, step 1 is specially：
Step 1-1：It is assumed that the apparent density m of plastic concretec,e, choose Portland cement dosage mc, low liquid limit glues
Native dosage mn, the third newborn dosage mb, volume sand ratio Sv；Tentatively selected unit consumption of water mw；
Step 1-2：Determine sandstone gross mass ms,g=mc,e-(mc+mn+mb+mw)；
Step 1-3：Determine the dosage m of sands=ms,gSv, the dosage m of stoneg=ms,g(1-Sv)；
Step 1-4：It is determined that adjusted according to controlling test slump range and determine final unit consumption of water mw’。
Further, the liquid limit of the low liquid limit clay be 32.6%, plastic limit 17.8%, plasticity index 14.8, powder
Grain (0.075mm~0.005mm) content is 64%, and clay (0.005mm~0.002mm) content is 26%；Third breast is third
Olefin(e) acid ester copolymer emulsion, its nonvolatile matter quality fraction are 47%, pH value 9.6, viscosity 1200mPas；The sand is full
Sufficient DL/T 5144-2015 continuous grading artificial sand, content of stone powder of its particle diameter less than 0.16mm are 20.7%, modulus of fineness
For 2.4, apparent density 2680kg/m3；The stone is to meet DL/T 5144-2015 technical requirements particle size ranges 5mm~15mm
Artificial rubble, apparent density 2710kg/m3；The water reducer is the PCA poly-carboxylic high-performances for meeting GB 8076-2008
Water reducer.
Further, in the step 3, forced mixer is capacity 100L, rotating speed 22r/min SJD100 forced action types
Concrete mixer.
The low liquid limit clay that the present invention uses ensures that concrete has sufficient intensity and good with the third breast incorporation cement-based material
The specific mechanism of action of deformation adaptability is well：Contain substantial amounts of montmorillonite and kaolinite class mineral, plasticity coagulation in clay
The unit consumption of water of soil is larger, and montmorillonite and kaolinite layer structure and water in soil water curve are glued under a large amount of free water environments
Effect produces expansion and viscosity, each component is mutually extruded be bonded, the silicon, aluminum oxide in clay are under hydrated cementitious environment
Also new hydrated product C-S-H and C-A-H (as shown in Figure 1) can be generated, further filling concrete particle and gelling system-sand-
Stone gap, make it have enough intensity.
The plasticity index of low liquid limit clay is 14.8, and clay (0.005mm~0.002mm) content is 26%, clay incorporation
Gelling system substitutes 30% cement, viscosity composition increase and modulus of elasticity reduces in concrete, concrete Stiffness, is bearing
Concrete has the ability of good adaptive deformation under certain load action.Third breast is that a kind of moisture of high molecular polymer dissipates
Body, incorporation mix and stir to form the modified cement-based material of emulsion polymerization, utilize the third newborn good dispersion and toughness reinforcing of itself
Barrier characteristics, further increase the toughness of plastic concrete, improve the ability of plastic concrete adaptive deformation.
The present invention possesses following beneficial effect：
(1) raw material are easy to get
Low liquid limit clay provided by the invention is based on principle of gathering materials on the spot, and the clay that utilizing works directly excavate is through drying in the air
It is that can be used to shine, sieve, and without purchasing the materials such as finished product clay, bentonite from other places, has both expanded flexible material sources,
Engineering cost has been saved again.
(2) cement consumption is few
The cement consumption that the present invention provides the third newborn toughness reinforcing plastic concrete is 200kg/m3, prevent than Second Stage Cofferdam for Three Gorges Project
Ooze the cement consumption (260kg/m of wall plastic concrete3) reduce 60kg/m3, economic benefit is fairly obvious.
(3) enough compression strength
7 days of third newborn toughness reinforcing plastic concrete provided by the invention respectively reached with 28 days cubic compressive strengths
1.01MPa~2.67MPa and 1.93MPa~3.98MPa, and cut-off wall material usually requires that its 28 days cube pressure resistances
Degree reaches 1MPa~4MPa, i.e., the intensity of the third newborn toughness reinforcing plastic concrete provided by the invention is entirely capable of meeting that design will
Ask.
(4) modulus of elasticity/intensity is than low (mould/strong ratio)
28 days pressure-proof elasticity modulus of the third newborn toughness reinforcing plastic concrete provided by the invention are 485~898MPa, are much smaller than
Normal concrete modulus of elasticity (generally higher than 10GPa), and 28 days moulds/ratio is in the range of 214~250 by force, average value 232,
Also much smaller than usually requiring that plastic concrete mould/strong requirement than less than 500, i.e., the flexibility of plastic concrete provided by the invention
It is good, the deformation of surrounding structure can be well adapted for.
(5) anti-permeability performance is excellent
Third newborn toughness reinforcing plastic concrete provided by the invention, 28 days relative coefficient of permeability are 1.45 × 10-7Cm/s~9.81 ×
10-7Cm/s, when the weight ratio of the third breast is 7~10, its seepage-resistant grade has approached Second Stage Cofferdam for Three Gorges Project plasticity coagulation
The seepage-resistant grade of soil, can guarantee that the overall anti-seepage effect of cut-pff wall.
(6) have good workability
The slump of plastic concrete mix provided by the invention reaches 180~200mm, should without mixing air entraining agent
The air content of plastic concrete mix can reach 4.5%~5.5%, and mix is functional, no bleeding and segregation phenomenon,
It is easy to pumping construction.The construction technology of third newborn toughness reinforcing plastic concrete is identical with normal concrete, and the third breast is former with other when mixing and stirring
Material adds mixer uniform mixing together, and the third breast is good with the adaptability of other raw material.
(7) it is environment friendly and pollution-free
The low liquid limit clay that the present invention uses makes full use of engineering excavation material, and only need to simply be dried in the air during clay excavation
Shine and sieve, it is environmentally safe.Third breast is nontoxic, harmless, environmentally safe, belongs to environmental type product.
Brief description of the drawings
Fig. 1 is that 28 days hydrated products amplify 5000 times of figure when the low liquid limit clay that the present invention uses and the third breast are applied in combination
Spectrum；
Fig. 2 is different larval instar cube pressure resistance of the various embodiments of the present invention from concrete obtained by different third newborn dosages
Spend schematic diagram.
Embodiment
The technical scheme in the present invention is clearly and completely described below in conjunction with specific embodiment.
Embodiment 1
The embodiment of the present invention designs the match ratio of plastic concrete using mass method, it is assumed that concrete apparent density mc,eFor
2100kg/m3, it is desirable to the slump reaches 180mm~220mm, air content 3.5%~5.0%, 28 days cubic compressive strengths
1MPa~4MPa.
A kind of preparation method with good the third newborn toughness reinforcing plastic concrete for deforming adaptability provided by the invention, bag
Include following steps：
The calculating of step 1. Stock allotment right：Using the material usage of mass method computational plasticity concrete, tentatively recommend water
Shale amount and clay additive, sand, stone gross mass, and the respective quality of sand and stone are calculated according to sand coarse aggregate ratio；Pass through indoor trial mix, control
Controlling concrete slump, adjust and determine unit consumption of water, so as to obtain the dosage of each raw material in plastic concrete；
Specifically, assume the apparent density m of plastic concretec,eFor 2100kg/m3, Portland cement dosage mcFor
200kg/m3, low liquid limit clay dosage mnFor 100kg/m3, the third newborn dosage mbFor 20kg/m3, volume sand ratio SvFor 95%；Preliminary choosing
Determine unit consumption of water mwFor 300kg/m3；
Determine sandstone gross mass ms,g=mc,e-(mc+mn+mb+mw)=1480kg/m3；
Determine the dosage m of sands=ms,gSv=1406kg/m3, the dosage m of stoneg=ms,g(1-Sv)=74kg/m3；
Adjusted according to controlling test slump range and determine final unit consumption of water mw'=300kg/m3。
Step 2. prepares raw material according to the result of calculation of step 1, weighs 70 parts of Portland cement, low liquid limit respectively
30 parts of clay, the third 7 parts of breast, 480 parts of sand, 30 parts of stone, 0.7 part of water reducer, 100 parts of water, and water reducer is dissolved in water.
Step 3. first will sequentially add forced action type by the load weighted raw material of step 2 by the order of sand, cement, clay, stone
Mixer, mixer stirring 30s is started, then adds water (dissolving in water reducer) and the third breast, then start mixer stirring 2min；
The concrete batching system mixed and stirred in step 3 is discharged on steel plate by step 4., is scraped and is cohered mixing on mixer
And thing, manually turn 2~3 times, you can the plastic concrete that must be prepared.
According to result of the test, the Stock allotment right that the plastic concrete of embodiment 1 is calculated is mw:mc:mn:mb:ms:mg=
1:0.7:0.3:0.07:4.7:0.2.Detected using standard method, experimental data is as follows：Slump 180mm, air content
5.5%, workability is excellent, and the compression strength of 7 days and 28 days is respectively 2.67MPa and 3.76MPa, and the modulus of elasticity of 28 days is
898MPa, the relative coefficient of permeability that the modulus of elasticity/compressive strength rate of 28 days is 239,28 days is 1.45 × 10-7Cm/s is (see figure
2)。
Other step reference implementation examples 1, relevant parameter is adjusted, it is as follows to obtain Stock allotment right：
The weight of each component of embodiment 2 is：102 parts of water, 70 parts of cement, 30 parts of clay, the third newborn 10 parts, sand 460
Part, 20 parts of stone.Detected using standard method, experimental data is as follows：Slump 182mm, air content 5.0%, workability is excellent
Different, the compression strength of 7 days and 28 days is respectively 3.02MPa and 3.98MPa, and the modulus of elasticity of 28 days is 854MPa, the bullet of 28 days
The relative coefficient of permeability that property modulus/compressive strength rate is 214,28 days is 2.01 × 10-7cm/s。
The weight of each component of embodiment 3 is：104 parts of water, 70 parts of cement, 30 parts of clay, the third newborn 13 parts, sand 460
Part, 20 parts of stone.Detected using standard method, experimental data is as follows：Slump 181mm, air content 5.1%, workability is excellent
Different, the compression strength of 7 days and 28 days is respectively 1.99MPa and 2.62MPa, and the modulus of elasticity of 28 days is 583MPa, the bullet of 28 days
Property modulus/compressive strength rate be 223, the relative coefficient of permeability of 28 days is 4.75 × 10-7cm/s。
The weight of each component of embodiment 4 is：106 parts of water, 70 parts of cement, 30 parts of clay, the third newborn 17 parts, sand 450
Part, 20 parts of stone.Detected using standard method, experimental data is as follows：Slump 180mm, air content 5.1%, workability is good
Good, the compression strength of 7 days and 28 days is respectively 1.45MPa and 2.26MPa, and the modulus of elasticity of 28 days is 527MPa, the bullet of 28 days
The relative coefficient of permeability that property modulus/compressive strength rate is 233,28 days is 6.76 × 10-7cm/s。
The weight of each component of embodiment 5 is：108 parts of water, 70 parts of cement, 30 parts of clay, the third newborn 20 parts, sand 450
Part, 20 parts of stone.Detected using standard method, experimental data is as follows：Slump 180mm, air content 5.2%, workability is good
Good, the compression strength of 7 days and 28 days is respectively 1.01MPa and 1.93MPa, and the modulus of elasticity of 28 days is 483MPa, the bullet of 28 days
The relative coefficient of permeability that property modulus/compressive strength rate is 250,28 days is 9.81 × 10-7cm/s。
In above-described embodiment, the Portland cement is with 80%~95% Portland clinker and appropriate stone
Hydraulic cementing materials made of cream and 5%~20% mixing material, 3 days, 28 days compression strength be not less than 17.0MPa respectively
And 42.5MPa, 3 days, 28 days rupture strengths be not less than 3.5MPa and 6.5MPa respectively.
The liquid limit of low liquid limit clay is 32.6%, plastic limit 17.8%, plasticity index 14.8, powder (0.075~
0.005mm) content is 64%, and clay (0.005~0.002mm) content is 26%；
Third breast is acrylate copolymer emulsion, and its nonvolatile matter quality fraction is 47%, pH value 9.6, and viscosity is
1200mPas, particularly Hebei it is auspicious up to engineering rubber and plastic Co., Ltd production acrylate copolymer emulsion；
Sand is the continuous grading artificial sand for meeting DL/T 5144-2015, and content of stone powder of its particle diameter less than 0.16mm is
20.7%, modulus of fineness 2.4, apparent density 2680kg/m3；
Stone is the artificial rubble for meeting DL/T 5144-2015 technical requirements particle size ranges 5mm~15mm, and apparent density is
2710kg/m3；
Water reducer water-reducing rate is 31%, particularly the PCA for meeting GB8076-2008 technical requirements of Jiangsu Bo Te productions
High performance water reducing agent of polyocarboxy acid.
Mechanics, deformation and anti-permeability performance are carried out to the plastic concrete that above-described embodiment is prepared to test, and are obtained shown in following table
Test result：
The third newborn toughness reinforcing plastic concrete Specifeca tion speeification with good deformation adaptability provided by the invention of table 1
The third newborn toughness reinforcing plastic concrete with good deformation adaptability provided by the invention is in dam foundation vertical seepage control, disease
The Hydraulic and Hydro-Power Engineerings such as dangerous reservoir consolidation process, dyke, cofferdam have broad application prospects.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
Belong to those skilled in the art the invention discloses technical scope in, the change or replacement that can readily occur in, all should
It is included within the scope of the present invention.Therefore, protection scope of the present invention should be defined by scope of the claims.
Claims (10)
- A kind of 1. third newborn toughness reinforcing plastic concrete with good deformation adaptability, it is characterised in that：By normal silicate water Mud, low liquid limit clay, the third breast, sand, stone, water and water reducer are mixed by following weight：Portland cement 70 Part, 30 parts of low liquid limit clay, the third 7~20 parts of breast, 450~470 parts of sand, 20 parts of stone, 100~108 parts of water, water reducer 0.7~0.8 Part.
- 2. the third newborn toughness reinforcing plastic concrete with good deformation adaptability as claimed in claim 1, it is characterised in that：Institute It is 42.5 Portland cements for meeting GB175-2007 to state Portland cement.
- 3. the third newborn toughness reinforcing plastic concrete with good deformation adaptability as claimed in claim 1, it is characterised in that：Institute The liquid limit for stating low liquid limit clay is 32.6%, plastic limit 17.8%, plasticity index 14.8, powder (0.075mm~0.005mm) Content is 64%, and clay (0.005mm~0.002mm) content is 26%.
- 4. the third newborn toughness reinforcing plastic concrete with good deformation adaptability as claimed in claim 1, it is characterised in that：Institute It is acrylate copolymer emulsion to state the third breast, and its nonvolatile matter quality fraction is 47%, pH value 9.6, viscosity 1200mPas.
- 5. the third newborn toughness reinforcing plastic concrete with good deformation adaptability as claimed in claim 1, it is characterised in that：Institute It is the continuous grading artificial sand for meeting DL/T 5144-2015 to state sand, and content of stone powder of its particle diameter less than 0.16mm is 20.7%, Modulus of fineness is 2.4, apparent density 2680kg/m3。
- 6. the third newborn toughness reinforcing plastic concrete with good deformation adaptability as claimed in claim 1, it is characterised in that：Institute It is the artificial rubble for meeting DL/T 5144-2015 technical requirements particle size ranges 5mm~15mm to state stone, apparent density 2710kg/ m3。
- 7. the third newborn toughness reinforcing plastic concrete with good deformation adaptability as claimed in claim 1, it is characterised in that：Institute It is the PCA high performance water reducing agent of polyocarboxy acid for meeting GB 8076-2008 to state water reducer.
- 8. a kind of preparation method with good the third newborn toughness reinforcing plastic concrete for deforming adaptability, it is characterised in that including such as Lower step：The calculating of step 1. Stock allotment right：Using the material usage of mass method computational plasticity concrete, tentatively recommend cementaceous Amount and clay additive, sand, stone gross mass, and the respective quality of sand and stone are calculated according to sand coarse aggregate ratio；It is mixed by indoor trial mix, control The native slump is coagulated, adjusts and determines unit consumption of water, so as to obtain the dosage of each raw material in plastic concrete；Step 2. prepares raw material according to the result of calculation of step 1, weighs 70 parts of Portland cement respectively according to parts by weight, 30 parts of low liquid limit clay, the third 7~20 parts of breast, 450~470 parts of sand, 20 parts of stone, 0.7~0.8 part of water reducer, 100~108 parts of water, And water reducer is dissolved in water；Step 3. first will sequentially add forced action type stirring by the load weighted raw material of step 2 by the order of sand, cement, clay, stone Machine, mixer stirring 30s is started, then add the third breast and be dissolved in the water reducer of water, then start mixer stirring 2min；The concrete batching system mixed and stirred in step 3 is discharged on steel plate by step 4., scrapes the mix cohered on mixer, Manually turn 2~3 times, you can plastic concrete is made.
- 9. the compound method of the third newborn toughness reinforcing plastic concrete as claimed in claim 8, it is characterised in that:Step 1 is specially：Step 1-1：It is assumed that the apparent density m of plastic concretec,e, choose Portland cement dosage mc, low liquid limit clay use Measure mn, the third newborn dosage mb, volume sand ratio Sv；Tentatively selected unit consumption of water mw；Step 1-2：Determine sandstone gross mass ms,g=mc,e-(mc+mn+mb+mw)；Step 1-3：Determine the dosage m of sands=ms,gSv, the dosage m of stoneg=ms,g(1-Sv)；Step 1-4：It is determined that adjusted according to controlling test slump range and determine final unit consumption of water mw’。
- 10. the compound method of the third newborn toughness reinforcing plastic concrete as claimed in claim 8, it is characterised in that：The low liquid limit is glued The liquid limit of soil is 32.6%, plastic limit 17.8%, plasticity index 14.8, and powder (0.075mm~0.005mm) content is 64%, clay (0.005mm~0.002mm) content is 26%；Third breast is acrylate copolymer emulsion, its non-volatile matter It is 47% to measure fraction, pH value 9.6, viscosity 1200mPas；The sand is the continuous grading for meeting DL/T 5144-2015 Artificial sand, content of stone powder of its particle diameter less than 0.16mm are 20.7%, modulus of fineness 2.4, apparent density 2680kg/m3； The stone is the artificial rubble for meeting DL/T 5144-2015 technical requirements particle size ranges 5mm~15mm, and apparent density is 2710kg/m3；The water reducer is the PCA high performance water reducing agent of polyocarboxy acid for meeting GB 8076-2008.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110963760A (en) * | 2019-12-16 | 2020-04-07 | 中建西部建设湖南有限公司 | Plastic concrete for seaport cofferdam engineering diaphragm wall and preparation method thereof |
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| CN110963760A (en) * | 2019-12-16 | 2020-04-07 | 中建西部建设湖南有限公司 | Plastic concrete for seaport cofferdam engineering diaphragm wall and preparation method thereof |
| CN115925337A (en) * | 2022-11-28 | 2023-04-07 | 中交第二航务工程局有限公司 | Plastic concrete suitable for impermeable wall of soft soil foundation and preparation method thereof |
| CN116102309A (en) * | 2022-12-09 | 2023-05-12 | 广东省水利水电第三工程局有限公司 | High-permeability plastic concrete and construction method of plastic concrete diaphragm wall |
| CN116102309B (en) * | 2022-12-09 | 2023-12-01 | 广东省水利水电第三工程局有限公司 | High-permeability plastic concrete and construction method of plastic concrete diaphragm wall |
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