CN105884301B - It is a kind of be capable of 620 meters of super high pump-conveyings exempt from High-strength self-compaction concrete and preparation method thereof of shaking - Google Patents
It is a kind of be capable of 620 meters of super high pump-conveyings exempt from High-strength self-compaction concrete and preparation method thereof of shaking Download PDFInfo
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- CN105884301B CN105884301B CN201610230165.7A CN201610230165A CN105884301B CN 105884301 B CN105884301 B CN 105884301B CN 201610230165 A CN201610230165 A CN 201610230165A CN 105884301 B CN105884301 B CN 105884301B
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
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Abstract
The present invention proposes a kind of High-strength self-compaction concrete and preparation method thereof of shaking of exempting from for being capable of 620 meters of super high pump-conveyings, and raw material components and the mass fraction proportioning of concrete are：14% 15% cement, 3.5% 4.5% miberal powders, 2.5% 3.5% ceramic polished micro mists, 1% 2% superfined flyash, 70% aggregate, 0.4% 0.6% polycarboxylic admixtures, 6.4% 6.6% mixing waters；Aggregate is made of sand and stone, sand coarse aggregate ratio ranging from 44% 50%；Sand is made of middle sand and fine sand, and stone is made of great Shi and gravelstone；Middle grain fineness number modulus is 2.4 2.6, and fine sand fineness modulus is 1.9 2.1；Big stone grain diameter is 10 20mm, and gravelstone grain size is 5 10mm.High-strength concrete of the present invention can lead to conventional method and be prepared.The High-strength self-compaction concrete goes out machine divergence >=700mm, T500≤ 4s, PA≤20mm, SR≤15%, concrete is soft, modest viscosity, and self-compacting ability is excellent, and working performance loss is divergence≤10mm, T after 621 meters of super high pump-conveyings500≤ 1s, PA≤10mm, SR≤5% reach pumping outlet self-compacting ability, without achievable labyrinth concrete construction of vibrating.
Description
Technical field
The invention belongs to engineered building materials technical field, specially it is a kind of be capable of 620 meters of super high pump-conveyings exempt to shake it is high-strength
Self-compacting concrete and preparation method thereof.
Background technology
As the product that industrialization and urbanization is combined, skyscraper originates from the U.S., various regions all over the world.It rubs
Its building is generally considered the ultimate symbol of urban development and urban economy strength, is pushing land use intensively, is forming city
Space, promotion spatial landscape interaction etc. all have significantly in length and breadth for city's concentration effect, promotion city terrestrial reference image, extension city
Positive effect.Meanwhile into since the new century, the height of the first in the world high building constantly refreshes, world's high-rise building it is flat
Height constantly increases, and according to statistics, 2000, world's high-rise building average height reached 439 meters when being 375 meters, 2010,
And it is expected that 2020, world's high-rise building equals height up to 598 meters.Different from ordinary skill, high-rise building is due to knot
Structure is high, and plugging or quality problems, which will once occur, for concrete to cause to hinder to high-rise building quality, completion time of project etc., while band
Carry out the economic loss huger than ordinary skill.
Super-high building structure (Core Walls Structure shear wall, steel pipe column etc.) is usually with reinforcing bar is intensive, steel plate interlocks, space is narrow
Characteristics, the vibrating spears such as small and structure is intensive can not fully vibrate across small gap, need after concrete ultra-high pumping outlet from
Closely knit performance, therefore develop that working performance is excellent, meets the concrete of outlet self-compaction after super high pump-conveying for ensureing engineering
Quality plays an important roll.
The ceramic industry in China is developed rapidly in recent years, however as the increase of ceramic yield, in ceramics
The fertilizer generated in production preparation process is also more and more.Usually required during ceramic system is standby by adobe be ground polishing from
And the superficial layer of its surface 0.5-0.7mm is removed, it even needs to remove the superficial layer of 1-2mm to meet requirement sometimes.According to system
Meter, often produces 1m2Polished bricks can generate the brick bits of 1.5kg or so, while will also to generate 0.6kg left for the abrasion of stage property and grinding tool
Right clast, it is estimated that the waste material of China's about millions of tons of ceramic polished brick every year generates.It is endless due to industrial chain
Kind and technical merit limitation, many waste materials can only be handled by the modes such as simply burying, and so large-scale pottery
Influence of the porcelain mountain to environment is extremely far-reaching, so how to carry out recycling to Ceramic Tiles waste material, carries out recycling treatment change
Waste be changed into values for urgent problem instantly, is extremely important to energy conservation, environmental protection.
Flyash is the red ash that catching is got off from the flue gas after coal combustion, is that the primary solids of thermal power plant discharge give up
Gurry, the flying dust captured by deduster after being discharged in the form of wet row, will be such that the harmful components in flying dust dissolve in water, final dirty
Contaminate surface water and groundwater.The chemical composition of flyash is similar to clay, wherein SiO2With Al2O3Total amount reaches about 70~90%
(mass percent) can be applied in concrete.And superfined flyash be using electricity gather dust pneumatic separation technique collection compared with
Fine grained, it usually has the characteristics such as hydration activity is high, physics diminishing effect is notable, good filing effect, is conducive to its work
It is applied in concrete production for admixture.
Superelevation layer concrete in China's improves concrete pump by improving fluidity, the reduction viscosity of concrete mostly at present
Performance is sent, to obtain higher pumping height.However this mode is after concrete pumping height is more than 400 meters, it is easy to
The increase of pumping pressure causes concrete isolation, bleeding, slurry osteodiastasis phenomenon occur, causes aggregate accumulation that plugging occurs, from
And cause huge economic loss.
Invention content
It is of the existing technology to solve the problems, such as, the present invention propose it is a kind of be capable of 620 meters of super high pump-conveyings exempt to shake it is high-strength
Self-compacting concrete and preparation method thereof, the concrete have the performance spy that of low cost, pump-conveying property is good, goes out to pump self-compaction
Point, while this method has many advantages, such as environmental protection, economizes the land resource and energy-saving and emission-reduction.
The technical scheme is that：
It is described it is a kind of be capable of 620 meters of super high pump-conveyings exempt from High-strength self-compaction concrete of shaking, it is characterised in that：The concrete
Raw material components and mass fraction proportioning be：14%-15% cement, 3.5%-4.5% miberal powders, 2.5%-3.5% are ceramic polished
Micro mist, 1%-2% superfined flyash, 70% aggregate, 0.4%-0.6% polycarboxylic admixtures, 6.4%-6.6% mixing waters；Institute
It states aggregate to be made of sand and stone, sand coarse aggregate ratio ranging from 44%-50%；The sand is made of middle sand and fine sand, and the stone is by big
Stone and gravelstone composition；The middle grain fineness number modulus is 2.4-2.6, and the fine sand fineness modulus is 1.9-2.1；The big stone grain diameter
For 10-20mm, the gravelstone grain size is 5-10mm.
Further preferred embodiment, a kind of High-strength self-compaction concrete of shaking of exempting from for being capable of 620 meters of super high pump-conveyings are special
Sign is：The mass ratio of middle sand and fine sand is 7:3~5:5.
Further preferred embodiment, a kind of High-strength self-compaction concrete of shaking of exempting from for being capable of 620 meters of super high pump-conveyings are special
Sign is：The mass ratio of great Shi and gravelstone is 7:3~9:1.
Further preferred embodiment, a kind of High-strength self-compaction concrete of shaking of exempting from for being capable of 620 meters of super high pump-conveyings are special
Sign is：The polycarboxylic admixture is by protecting component of collapsing, diminishing component, slow setting component, viscosity adjustment component and bubble adjustment group
Divide and form, water-reducing rate 20-25%, solid content 15-20%；The mass fraction of component of collapsing is protected in polycarboxylic admixture is
10%-40%, the mass fraction of slow setting component is 5%-20%.
Further preferred embodiment, a kind of High-strength self-compaction concrete of shaking of exempting from for being capable of 620 meters of super high pump-conveyings are special
Sign is：Ceramic polished powder size range is 1-10 μm, specific surface area >=800m2/kg。
Further preferred embodiment, a kind of High-strength self-compaction concrete of shaking of exempting from for being capable of 620 meters of super high pump-conveyings are special
Sign is：Superfined flyash particle size distribution range is 1~5 μm, and particle shape is spherical structure, specific surface area >=600m2/kg。
A kind of preparation method for the High-strength self-compaction concrete of exempting to shake for being capable of 620 meters of super high pump-conveyings, it is characterised in that：Including
Following steps：
Step 1：Raw material is weighed according to raw material components and the mass fraction proportioning of following concrete：14%-15% cement,
3.5%-4.5% miberal powders, the ceramic polished micro mists of 2.5%-3.5%, 1%-2% superfined flyash, 70% aggregate, 0.4%-
0.6% polycarboxylic admixture, 6.4%-6.6% mixing waters；The aggregate is made of sand and stone, sand coarse aggregate ratio ranging from 44%-
50%；The sand is made of middle sand and fine sand, and the stone is made of great Shi and gravelstone；The middle grain fineness number modulus is 2.4-
2.6, the fine sand fineness modulus is 1.9-2.1；The big stone grain diameter is 10-20mm, and the gravelstone grain size is 5-10mm；
Step 2：Great Shi, gravelstone, ceramic polished micro mist and 60%~80% mixing water in stirring container are mixed and stirred
Mix 60~90s；Remaining raw material is poured into 240~300s of stirring in stirring container again, obtains concrete.
Advantageous effect
The beneficial effects of the invention are as follows：
(a) super high pump-conveying prepared using the method for the present invention exempts from High-strength self-compaction concrete of shaking, a large amount of to be thrown using ceramics
Light micro mist, superfined flyash have many advantages, such as environmental protection, economize the land resource and energy-saving and emission-reduction.
(b) present invention replaces traditional silica flour to prepare super high pump-conveying High-strength self-compaction concrete using ceramic polished micro mist, has
There are low-cost economic advantages；Using ceramic polished micro mist and superfined flyash structure adjusting concrete viscosity, viscosity is prevented
It is too high or too low.
(c) unique stirring technique (be individually mixed using stone, ceramic polished micro mist and water, using stone corner angle and
Ceramic polished micro mist hits friction) ceramic polished micro mist dispersibility can be improved, it is uniformly filled in concrete, ensures concrete
Performance is stablized.
(d) present invention unifies continuous grading optimization super high pump-conveying using aggregate and exempts from the High-strength self-compaction concrete aggregate point that shakes
Cloth forms minimum porosity, and aggregate porosity ranges are 30%~38%, save cementitious material, improve pump-conveying property.
(e) super high pump-conveying prepared using the present invention exempts from High-strength self-compaction concrete of shaking, and pump-conveying property is excellent, through embodiment
In after 621 meters of super high pump-conveyings performance loss it is small, divergence≤10mm, T500≤ 1s, PA≤10mm, SR≤5%, outlet concrete
Reach and can reach self-compaction, height throwing pours lower concrete and do not disperse, and good fluidity is, it can be achieved that without vibration shear wall complexity concrete
It pours, construction quality is protected.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
It obtains significantly or is recognized by the practice of the present invention.
Specific embodiment
The embodiment of the present invention is described below in detail, the embodiment of description is exemplary, it is intended to for explaining the present invention,
And it is not considered as limiting the invention.
Following embodiment is applied successfully in 117 mansion concrete constructions of Tianjin Gao Yin, 117 mansion steel plate shear force wall coagulations
Soil construction has the characteristics that：(1) shear wall structure is complicated, and internal steel plate reinforcing bar interlocks, and reinforcing bar is densely distributed, and vibrating spear can not
Fully vibrate；(2) it is big to pour drop, more than 10 meter, for the more demanding viscosity of concrete and anti-isolation ability；(3) it goes here and there
Cylinder fixed point pours, and concrete flow distance is long, needs good reinforcing bar passability.Normal concrete easily goes out under these conditions
Phenomena such as existing leakiness, honeycomb hole.By the content of present invention, not only pouring quality is excellent for 117 mansion concrete of Tianjin, success
It completes shear wall Core Walls Structure to bind, and creates Guiness World Records that concrete disposably pumps 621 meters.
Embodiment 1：
The raw material for High-strength self-compaction concrete of exempting to shake for being capable of 620 meters of super high pump-conveyings is prepared in the present embodiment is：Cement, ore deposit
Powder, ceramic polished micro mist, superfined flyash, aggregate, polycarboxylic admixture, mixing water.The mass fraction proportioning of feed components
For：Cement 14%, miberal powder 3.5%, ceramic polished micro mist 3.5%, superfined flyash 2%, aggregate 70%, polycarboxylic admixture
0.5%, mixing water 6.5%.The aggregate is made of sand and stone, sand coarse aggregate ratio 44%；The sand is made of middle sand and fine sand, described
Stone is made of great Shi and gravelstone；Medium-fine sand mass ratio is 7:3, big gravelstone mass ratio is 7:3.
For the cement used in the present embodiment for PO42.5 Portland cements, miberal powder used is S95 miberal powders.Utilize pottery
Porcelain Polishing Powder replaces expensive silicon ash to prepare High-strength self-compaction concrete, and ceramic polished micro mist is ceramic polished rear waste material
Grinding forms, and particle size range is concentrated between 1-10 μm, specific surface area 820m2/ kg, 28d activity 93.Superfined flyash grain size
Distribution is concentrated in 1~5 μ m, and particle shape is spherical structure, water demand ratio 93%, 28d activity 105, specific surface
Product 630m2/kg.The present invention utilizes the viscosity and working performance of ceramic polished micro mist and superfined flyash adjustment concrete, ceramics
Polishing Powder has the function of increase concrete viscosity, and superfined flyash has the function of to reduce concrete viscosity.
Fine aggregate used is river sand in the present embodiment, and sand is used in combination with fine sand in, wherein middle grain fineness number modulus is
2.4, clay content 0.8%, fine sand fineness modulus is 2.1, clay content 1.8%.Sand porosity is 42%.
Coarse aggregate used is green stone in the present embodiment, crush index 9%, clay content 0.9%.Using 2 grades of great Shi and gravelstone
Grain size stone is used in combination, wherein big stone grain diameter is 10-20mm, gravelstone grain size is 5-10mm.Stone porosity is 43%.
Polycarboxylic admixture adjusts component structure by protecting component of collapsing, diminishing component, slow setting component, viscosity adjustment component and bubble
Into, water-reducing rate 24%, solid content 19%.Concrete is controlled to collapse by collapse component and slow setting component of polycarboxylic admixture guarantor
Degree of falling loses, wherein protecting component of collapsing accounts for polycarboxylic admixture mass fraction as 10%-40%, slow setting component accounts for polycarboxylic admixture
Mass fraction is 5%-20%.It is as shown in the table：
| Guarantor is collapsed component (%) | Slow setting component (%) | 5h concrete divergence loses (mm) |
| 10-20 | 15-20 | Free of losses |
| 20-30 | 10-15 | Free of losses |
| 30-40 | 5-10 | Free of losses |
And it is 10% to protect component of collapsing in the present embodiment in polycarboxylic admixture, slow setting component is 20%.
The great Shi weighed, gravelstone, ceramic polished micro mist and 80% mixing water are mixed 90s to stir in agitated kettle
It mixes uniformly；Remaining raw material is poured into again, 240s is stirred in agitated kettle, obtain concrete.Concrete performance is as shown in the table.Coagulation
Native workability is good, phenomena such as after form removal without hole, honeycomb.
Embodiment 2：
The raw material for High-strength self-compaction concrete of exempting to shake for being capable of 620 meters of super high pump-conveyings is prepared in the present embodiment is：Cement, ore deposit
Powder, ceramic polished micro mist, superfined flyash, aggregate, polycarboxylic admixture, mixing water.The mass fraction proportioning of feed components
For：Cement 14.5%, miberal powder 4%, ceramic polished micro mist 3%, superfined flyash 1.5%, aggregate 70%, polycarboxylic admixture
0.5%, mixing water 6.5%.The aggregate is made of sand and stone, sand coarse aggregate ratio 44%；The sand is made of middle sand and fine sand, described
Stone is made of great Shi and gravelstone；Medium-fine sand mass ratio is 7:3, big gravelstone mass ratio is 7:3.
For the cement used in the present embodiment for PO42.5 Portland cements, miberal powder used is S95 miberal powders.Utilize pottery
Porcelain Polishing Powder replaces expensive silicon ash to prepare High-strength self-compaction concrete, and ceramic polished micro mist is ceramic polished rear waste material
Grinding forms, and particle size range is concentrated between 1-10 μm, specific surface area 810m2/ kg, 28d activity 99.Superfined flyash grain size
Distribution is concentrated in 1~5 μ m, and particle shape is spherical structure, water demand ratio 92%, 28d activity 100, specific surface
Product 600m2/kg.The present invention utilizes the viscosity and working performance of ceramic polished micro mist and superfined flyash adjustment concrete, ceramics
Polishing Powder has the function of increase concrete viscosity, and superfined flyash has the function of to reduce concrete viscosity.
Fine aggregate used is river sand in the present embodiment, and sand is used in combination with fine sand in, wherein middle grain fineness number modulus is
2.5, clay content 0.9%, fine sand fineness modulus is 2.0, clay content 2.0%.Sand porosity is 42%.
Coarse aggregate used is green stone in the present embodiment, crush index 8%, clay content 1%.Using 2 grades of grains of great Shi and gravelstone
Diameter stone is used in combination, wherein big stone grain diameter is 10-20mm, gravelstone grain size is 5-10mm.Stone porosity is 43%.
Polycarboxylic admixture adjusts component structure by protecting component of collapsing, diminishing component, slow setting component, viscosity adjustment component and bubble
Into, water-reducing rate 20%, solid content 15%.Concrete is controlled to collapse by collapse component and slow setting component of polycarboxylic admixture guarantor
Degree of falling loses, wherein protecting component of collapsing accounts for polycarboxylic admixture mass fraction as 10%-40%, slow setting component accounts for polycarboxylic admixture
Mass fraction is 5%-20%.It is as shown in the table：
And it is 25% to protect component of collapsing in the present embodiment in polycarboxylic admixture, slow setting component is 13%.
The great Shi weighed, gravelstone, ceramic polished micro mist and 80% mixing water are mixed 90s to stir in agitated kettle
It mixes uniformly；Remaining raw material is poured into again, 240s is stirred in agitated kettle, obtain concrete.Concrete performance is as shown in the table.Coagulation
Native workability is good, phenomena such as after form removal without hole, honeycomb.
Embodiment 3：
The raw material for High-strength self-compaction concrete of exempting to shake for being capable of 620 meters of super high pump-conveyings is prepared in the present embodiment is：Cement, ore deposit
Powder, ceramic polished micro mist, superfined flyash, aggregate, polycarboxylic admixture, mixing water.The mass fraction proportioning of feed components
For：Cement 15%, miberal powder 4.5%, ceramic polished micro mist 2.5%, superfined flyash 1%, aggregate 70%, polycarboxylic admixture
0.5%, mixing water 6.5%.The aggregate is made of sand and stone, sand coarse aggregate ratio 44%；The sand is made of middle sand and fine sand, described
Stone is made of great Shi and gravelstone；Medium-fine sand mass ratio is 7:3, big gravelstone mass ratio is 7:3.
For the cement used in the present embodiment for PO42.5 Portland cements, miberal powder used is S95 miberal powders.Utilize pottery
Porcelain Polishing Powder replaces expensive silicon ash to prepare High-strength self-compaction concrete, and ceramic polished micro mist is ceramic polished rear waste material
Grinding forms, and particle size range is concentrated between 1-10 μm, specific surface area 800m2/ kg, 28d activity 95.Superfined flyash grain size
Distribution is concentrated in 1~5 μ m, and particle shape is spherical structure, water demand ratio 90%, 28d activity 105, specific surface
Product 610m2/kg.The present invention utilizes the viscosity and working performance of ceramic polished micro mist and superfined flyash adjustment concrete, ceramics
Polishing Powder has the function of increase concrete viscosity, and superfined flyash has the function of to reduce concrete viscosity.
Fine aggregate used is river sand in the present embodiment, and sand is used in combination with fine sand in, wherein middle grain fineness number modulus is
2.6, clay content 1.0%, fine sand fineness modulus is 1.9, clay content 1.9%.Sand porosity is 42%.
Coarse aggregate used is green stone in the present embodiment, crush index 10%, clay content 1%.Using 2 grades of grains of great Shi and gravelstone
Diameter stone is used in combination, wherein big stone grain diameter is 10-20mm, gravelstone grain size is 5-10mm.Stone porosity is 43%.
Polycarboxylic admixture adjusts component structure by protecting component of collapsing, diminishing component, slow setting component, viscosity adjustment component and bubble
Into, water-reducing rate 25%, solid content 20%.Concrete is controlled to collapse by collapse component and slow setting component of polycarboxylic admixture guarantor
Degree of falling loses, wherein protecting component of collapsing accounts for polycarboxylic admixture mass fraction as 10%-40%, slow setting component accounts for polycarboxylic admixture
Mass fraction is 5%-20%.It is as shown in the table：
| Guarantor is collapsed component (%) | Slow setting component (%) | 5h concrete divergence loses (mm) |
| 10-20 | 15-20 | Free of losses |
| 20-30 | 10-15 | Free of losses |
| 30-40 | 5-10 | Free of losses |
And it is 40% to protect component of collapsing in the present embodiment in polycarboxylic admixture, slow setting component is 5%.
The great Shi weighed, gravelstone, ceramic polished micro mist and 80% mixing water are mixed 90s to stir in agitated kettle
It mixes uniformly；Remaining raw material is poured into again, 240s is stirred in agitated kettle, obtain concrete.Concrete performance is as shown in the table.Coagulation
Native workability is good, phenomena such as after form removal without hole, honeycomb.
Embodiment 4：
The raw material for High-strength self-compaction concrete of exempting to shake for being capable of 620 meters of super high pump-conveyings is prepared in the present embodiment is：Cement, ore deposit
Powder, ceramic polished micro mist, superfined flyash, aggregate, polycarboxylic admixture, mixing water.The mass fraction proportioning of feed components
For：Cement 14.5%, miberal powder 4%, ceramic polished micro mist 3%, superfined flyash 1.5%, aggregate 70%, polycarboxylic admixture
0.5%, mixing water 6.5%.The aggregate is made of sand and stone, sand coarse aggregate ratio 47%；The sand is made of middle sand and fine sand, described
Stone is made of great Shi and gravelstone；Medium-fine sand mass ratio is 7:3, big gravelstone mass ratio is 7:3.
For the cement used in the present embodiment for PO42.5 Portland cements, miberal powder used is S95 miberal powders.Utilize pottery
Porcelain Polishing Powder replaces expensive silicon ash to prepare High-strength self-compaction concrete, and ceramic polished micro mist is ceramic polished rear waste material
Grinding forms, and particle size range is concentrated between 1-10 μm, specific surface area 810m2/ kg, 28d activity 100.Superfined flyash grain
Diameter distribution is concentrated in 1~5 μ m, and particle shape is spherical structure, water demand ratio 95%, and 28d activity 103 compares table
Area 630m2/kg.The present invention utilizes the viscosity and working performance of ceramic polished micro mist and superfined flyash adjustment concrete, pottery
Porcelain Polishing Powder has the function of increase concrete viscosity, and superfined flyash has the function of to reduce concrete viscosity.
Fine aggregate used is river sand in the present embodiment, and sand is used in combination with fine sand in, wherein middle grain fineness number modulus is
2.4, clay content 0.7%, fine sand fineness modulus is 2.0, clay content 1.8%.Sand porosity is 42%.
Coarse aggregate used is green stone in the present embodiment, crush index 8%, clay content 0.7%.Using 2 grades of great Shi and gravelstone
Grain size stone is used in combination, wherein big stone grain diameter is 10-20mm, gravelstone grain size is 5-10mm.Stone porosity is 43%.
Polycarboxylic admixture adjusts component structure by protecting component of collapsing, diminishing component, slow setting component, viscosity adjustment component and bubble
Into, water-reducing rate 24%, solid content 19%.Concrete is controlled to collapse by collapse component and slow setting component of polycarboxylic admixture guarantor
Degree of falling loses, wherein protecting component of collapsing accounts for polycarboxylic admixture mass fraction as 10%-40%, slow setting component accounts for polycarboxylic admixture
Mass fraction is 5%-20%.It is as shown in the table：
| Guarantor is collapsed component (%) | Slow setting component (%) | 5h concrete divergence loses (mm) |
| 10-20 | 15-20 | Free of losses |
| 20-30 | 10-15 | Free of losses |
| 30-40 | 5-10 | Free of losses |
And it is 25% to protect component of collapsing in the present embodiment in polycarboxylic admixture, slow setting component is 13%.
The great Shi weighed, gravelstone, ceramic polished micro mist and 80% mixing water are mixed 90s to stir in agitated kettle
It mixes uniformly；Remaining raw material is poured into again, 240s is stirred in agitated kettle, obtain concrete.Concrete performance is as shown in the table.Coagulation
Native workability is good, phenomena such as after form removal without hole, honeycomb.
Embodiment 5：
The raw material for High-strength self-compaction concrete of exempting to shake for being capable of 620 meters of super high pump-conveyings is prepared in the present embodiment is：Cement, ore deposit
Powder, ceramic polished micro mist, superfined flyash, aggregate, polycarboxylic admixture, mixing water.The mass fraction proportioning of feed components
For：Cement 14.5%, miberal powder 4%, ceramic polished micro mist 3%, superfined flyash 1.5%, aggregate 70%, polycarboxylic admixture
0.5%, mixing water 6.5%.The aggregate is made of sand and stone, sand coarse aggregate ratio 50%；The sand is made of middle sand and fine sand, described
Stone is made of great Shi and gravelstone；Medium-fine sand mass ratio is 7:3, big gravelstone mass ratio is 7:3.
For the cement used in the present embodiment for PO42.5 Portland cements, miberal powder used is S95 miberal powders.Utilize pottery
Porcelain Polishing Powder replaces expensive silicon ash to prepare High-strength self-compaction concrete, and ceramic polished micro mist is ceramic polished rear waste material
Grinding forms, and particle size range is concentrated between 1-10 μm, specific surface area 840m2/ kg, 28d activity 98.Superfined flyash grain size
Distribution is concentrated in 1~5 μ m, and particle shape is spherical structure, water demand ratio 94%, 28d activity 102, specific surface
Product 640m2/kg.The present invention utilizes the viscosity and working performance of ceramic polished micro mist and superfined flyash adjustment concrete, ceramics
Polishing Powder has the function of increase concrete viscosity, and superfined flyash has the function of to reduce concrete viscosity.
Fine aggregate used is river sand in the present embodiment, and sand is used in combination with fine sand in, wherein middle grain fineness number modulus is
2.6, clay content 0.8%, fine sand fineness modulus is 2.0, clay content 1.6%.Sand porosity is 42%.
Coarse aggregate used is green stone in the present embodiment, crush index 10%, clay content 0.9%.Using 2 grades of great Shi and gravelstone
Grain size stone is used in combination, wherein big stone grain diameter is 10-20mm, gravelstone grain size is 5-10mm.Stone porosity is 43%.
Polycarboxylic admixture adjusts component structure by protecting component of collapsing, diminishing component, slow setting component, viscosity adjustment component and bubble
Into, water-reducing rate 22%, solid content 18%.Concrete is controlled to collapse by collapse component and slow setting component of polycarboxylic admixture guarantor
Degree of falling loses, wherein protecting component of collapsing accounts for polycarboxylic admixture mass fraction as 10%-40%, slow setting component accounts for polycarboxylic admixture
Mass fraction is 5%-20%.It is as shown in the table：
| Guarantor is collapsed component (%) | Slow setting component (%) | 5h concrete divergence loses (mm) |
| 10-20 | 15-20 | Free of losses |
| 20-30 | 10-15 | Free of losses |
| 30-40 | 5-10 | Free of losses |
And it is 25% to protect component of collapsing in the present embodiment in polycarboxylic admixture, slow setting component is 13%.
The great Shi weighed, gravelstone, ceramic polished micro mist and 80% mixing water are mixed 90s to stir in agitated kettle
It mixes uniformly；Remaining raw material is poured into again, 240s is stirred in agitated kettle, obtain concrete.Concrete performance is as shown in the table.Coagulation
Native workability is good, phenomena such as after form removal without hole, honeycomb.
Embodiment 6：
The raw material for High-strength self-compaction concrete of exempting to shake for being capable of 620 meters of super high pump-conveyings is prepared in the present embodiment is：Cement, ore deposit
Powder, ceramic polished micro mist, superfined flyash, aggregate, polycarboxylic admixture, mixing water.The mass fraction proportioning of feed components
For：Cement 14.5%, miberal powder 4%, ceramic polished micro mist 3%, superfined flyash 1.5%, aggregate 70%, polycarboxylic admixture
0.5%, mixing water 6.5%.The aggregate is made of sand and stone, sand coarse aggregate ratio 47%；The sand is made of middle sand and fine sand, described
Stone is made of great Shi and gravelstone；Medium-fine sand mass ratio is 6:4, big gravelstone mass ratio is 8:2.
For the cement used in the present embodiment for PO42.5 Portland cements, miberal powder used is S95 miberal powders.Utilize pottery
Porcelain Polishing Powder replaces expensive silicon ash to prepare High-strength self-compaction concrete, and ceramic polished micro mist is ceramic polished rear waste material
Grinding forms, and particle size range is concentrated between 1-10 μm, specific surface area 830m2/ kg, 28d activity 97.Superfined flyash grain size
Distribution is concentrated in 1~5 μ m, and particle shape is spherical structure, water demand ratio 90%, 28d activity 102, specific surface
Product 630m2/kg.The present invention utilizes the viscosity and working performance of ceramic polished micro mist and superfined flyash adjustment concrete, ceramics
Polishing Powder has the function of increase concrete viscosity, and superfined flyash has the function of to reduce concrete viscosity.
Fine aggregate used is river sand in the present embodiment, and sand is used in combination with fine sand in, wherein middle grain fineness number modulus is
2.4, clay content 0.9%, fine sand fineness modulus is 2.1, clay content 1.8%.Sand porosity is 38%.
Coarse aggregate used is green stone in the present embodiment, crush index 7%, clay content 1%.Using 2 grades of grains of great Shi and gravelstone
Diameter stone is used in combination, wherein big stone grain diameter is 10-20mm, gravelstone grain size is 5-10mm.Stone porosity is 40%.
Polycarboxylic admixture adjusts component structure by protecting component of collapsing, diminishing component, slow setting component, viscosity adjustment component and bubble
Into, water-reducing rate 22%, solid content 18%.Concrete is controlled to collapse by collapse component and slow setting component of polycarboxylic admixture guarantor
Degree of falling loses, wherein protecting component of collapsing accounts for polycarboxylic admixture mass fraction as 10%-40%, slow setting component accounts for polycarboxylic admixture
Mass fraction is 5%-20%.It is as shown in the table：
| Guarantor is collapsed component (%) | Slow setting component (%) | 5h concrete divergence loses (mm) |
| 10-20 | 15-20 | Free of losses |
| 20-30 | 10-15 | Free of losses |
| 30-40 | 5-10 | Free of losses |
And it is 25% to protect component of collapsing in the present embodiment in polycarboxylic admixture, slow setting component is 13%.
The great Shi weighed, gravelstone, ceramic polished micro mist and 80% mixing water are mixed 75s to stir in agitated kettle
It mixes uniformly；Remaining raw material is poured into again, 270s is stirred in agitated kettle, obtain concrete.Concrete performance is as shown in the table.Coagulation
Native workability is good, phenomena such as after form removal without hole, honeycomb.
Embodiment 7：
The raw material for High-strength self-compaction concrete of exempting to shake for being capable of 620 meters of super high pump-conveyings is prepared in the present embodiment is：Cement, ore deposit
Powder, ceramic polished micro mist, superfined flyash, aggregate, polycarboxylic admixture, mixing water.The mass fraction proportioning of feed components
For：Cement 14.5%, miberal powder 4%, ceramic polished micro mist 3%, superfined flyash 1.5%, aggregate 70%, polycarboxylic admixture
0.4%, mixing water 6.6%.The aggregate is made of sand and stone, sand coarse aggregate ratio 47%；The sand is made of middle sand and fine sand, described
Stone is made of great Shi and gravelstone；Medium-fine sand mass ratio is 5:5, big gravelstone mass ratio is 9:1.
For the cement used in the present embodiment for PO42.5 Portland cements, miberal powder used is S95 miberal powders.Utilize pottery
Porcelain Polishing Powder replaces expensive silicon ash to prepare High-strength self-compaction concrete, and ceramic polished micro mist is ceramic polished rear waste material
Grinding forms, and particle size range is concentrated between 1-10 μm, specific surface area 820m2/ kg, 28d activity 95.Superfined flyash grain size
Distribution is concentrated in 1~5 μ m, and particle shape is spherical structure, water demand ratio 93%, 28d activity 105, specific surface
Product 640m2/kg.The present invention utilizes the viscosity and working performance of ceramic polished micro mist and superfined flyash adjustment concrete, ceramics
Polishing Powder has the function of increase concrete viscosity, and superfined flyash has the function of to reduce concrete viscosity.
Fine aggregate used is river sand in the present embodiment, and sand is used in combination with fine sand in, wherein middle grain fineness number modulus is
2.5, clay content 0.9%, fine sand fineness modulus is 2.0, clay content 1.9%.Sand porosity is 44%.
Coarse aggregate used is green stone in the present embodiment, crush index 9%, clay content 0.6%.Using 2 grades of great Shi and gravelstone
Grain size stone is used in combination, wherein big stone grain diameter is 10-20mm, gravelstone grain size is 5-10mm.Stone porosity is 46%.
Polycarboxylic admixture adjusts component structure by protecting component of collapsing, diminishing component, slow setting component, viscosity adjustment component and bubble
Into, water-reducing rate 25%, solid content 19%.Concrete is controlled to collapse by collapse component and slow setting component of polycarboxylic admixture guarantor
Degree of falling loses, wherein protecting component of collapsing accounts for polycarboxylic admixture mass fraction as 10%-40%, slow setting component accounts for polycarboxylic admixture
Mass fraction is 5%-20%.It is as shown in the table：
| Guarantor is collapsed component (%) | Slow setting component (%) | 5h concrete divergence loses (mm) |
| 10-20 | 15-20 | Free of losses |
| 20-30 | 10-15 | Free of losses |
| 30-40 | 5-10 | Free of losses |
And it is 25% to protect component of collapsing in the present embodiment in polycarboxylic admixture, slow setting component is 13%.
The great Shi weighed, gravelstone, ceramic polished micro mist and 70% mixing water are mixed 90s to stir in agitated kettle
It mixes uniformly；Remaining raw material is poured into again, 300s is stirred in agitated kettle, obtain concrete.Concrete performance is as shown in the table.Coagulation
Native workability is good, phenomena such as after form removal without hole, honeycomb.
Embodiment 8：
The raw material for High-strength self-compaction concrete of exempting to shake for being capable of 620 meters of super high pump-conveyings is prepared in the present embodiment is：Cement, ore deposit
Powder, ceramic polished micro mist, superfined flyash, aggregate, polycarboxylic admixture, mixing water.The mass fraction proportioning of feed components
For：Cement 14.5%, miberal powder 4%, ceramic polished micro mist 3%, superfined flyash 1.5%, aggregate 70%, polycarboxylic admixture
0.6%, mixing water 6.4%.The aggregate is made of sand and stone, sand coarse aggregate ratio 47%；The sand is made of middle sand and fine sand, described
Stone is made of great Shi and gravelstone；Medium-fine sand mass ratio is 5:5, big gravelstone mass ratio is 9:1.
For the cement used in the present embodiment for PO42.5 Portland cements, miberal powder used is S95 miberal powders.Utilize pottery
Porcelain Polishing Powder replaces expensive silicon ash to prepare High-strength self-compaction concrete, and ceramic polished micro mist is ceramic polished rear waste material
Grinding forms, and particle size range is concentrated between 1-10 μm, specific surface area 830m2/ kg, 28d activity 96.Superfined flyash grain size
Distribution is concentrated in 1~5 μ m, and particle shape is spherical structure, water demand ratio 94%, 28d activity 101, specific surface
Product 610m2/kg.The present invention utilizes the viscosity and working performance of ceramic polished micro mist and superfined flyash adjustment concrete, ceramics
Polishing Powder has the function of increase concrete viscosity, and superfined flyash has the function of to reduce concrete viscosity.
Fine aggregate used is river sand in the present embodiment, and sand is used in combination with fine sand in, wherein middle grain fineness number modulus is
2.6, clay content 0.5%, fine sand fineness modulus is 2.1, clay content 2.0%.Sand porosity is 44%.
Coarse aggregate used is green stone in the present embodiment, crush index 10%, clay content 0.6%.Using 2 grades of great Shi and gravelstone
Grain size stone is used in combination, wherein big stone grain diameter is 10-20mm, gravelstone grain size is 5-10mm.Stone porosity is 46%.
Polycarboxylic admixture adjusts component structure by protecting component of collapsing, diminishing component, slow setting component, viscosity adjustment component and bubble
Into, water-reducing rate 23%, solid content 17%.Concrete is controlled to collapse by collapse component and slow setting component of polycarboxylic admixture guarantor
Degree of falling loses, wherein protecting component of collapsing accounts for polycarboxylic admixture mass fraction as 10%-40%, slow setting component accounts for polycarboxylic admixture
Mass fraction is 5%-20%.It is as shown in the table：
| Guarantor is collapsed component (%) | Slow setting component (%) | 5h concrete divergence loses (mm) |
| 10-20 | 15-20 | Free of losses |
| 20-30 | 10-15 | Free of losses |
| 30-40 | 5-10 | Free of losses |
And it is 25% to protect component of collapsing in the present embodiment in polycarboxylic admixture, slow setting component is 13%.
The great Shi weighed, gravelstone, ceramic polished micro mist and 60% mixing water are mixed 90s to stir in agitated kettle
It mixes uniformly；Remaining raw material is poured into again, 300s is stirred in agitated kettle, obtain concrete.Concrete performance is as shown in the table.Coagulation
Native workability is good, phenomena such as after form removal without hole, honeycomb.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, those of ordinary skill in the art are not departing from the principle of the present invention and objective
In the case of can make changes, modifications, substitutions and variations to the above described embodiments within the scope of the invention.
Claims (5)
1. it is a kind of be capable of 620 meters of super high pump-conveyings exempt from High-strength self-compaction concrete of shaking, it is characterised in that：The raw material of the concrete
Component and mass fraction proportioning are：14%-15% cement, 3.5%-4.5% miberal powders, the ceramic polished micro mists of 2.5%-3.5%,
1%-2% superfined flyash, 70% aggregate, 0.4%-0.6% polycarboxylic admixtures, 6.4%-6.6% mixing waters；The aggregate
It is made of sand and stone, sand coarse aggregate ratio ranging from 44%-50%；The sand is made of middle sand and fine sand, and the stone is by great Shi and small
Stone forms；The middle grain fineness number modulus is 2.4-2.6, and the fine sand fineness modulus is 1.9-2.1；The big stone grain diameter is 10-
20mm, the gravelstone grain size are 5-10mm；Ceramic polished powder size range is 1-10 μm, specific surface area >=800m2/kg；It is super
Fine powdered coal particle size distribution range is 1~5 μm, and particle shape is spherical structure, specific surface area >=600m2/kg。
2. according to claim 1 it is a kind of be capable of 620 meters of super high pump-conveyings exempt from High-strength self-compaction concrete of shaking, feature exists
In：The mass ratio of middle sand and fine sand is 7:3~5:5.
3. it is according to claim 1 or claim 2 it is a kind of be capable of 620 meters of super high pump-conveyings exempt from High-strength self-compaction concrete of shaking, feature
It is：The mass ratio of great Shi and gravelstone is 7:3~9:1.
4. according to claim 3 it is a kind of be capable of 620 meters of super high pump-conveyings exempt from High-strength self-compaction concrete of shaking, feature exists
In：The polycarboxylic admixture adjusts component structure by protecting component of collapsing, diminishing component, slow setting component, viscosity adjustment component and bubble
Into water-reducing rate 20-25%, solid content 15-20%；The mass fraction that component of collapsing is protected in polycarboxylic admixture is 10%-
40%, the mass fraction of slow setting component is 5%-20%.
5. a kind of preparation method for preparing the High-strength self-compaction concrete of exempting to shake for being capable of 620 meters of super high pump-conveyings described in claim 1,
It is characterized in that：Include the following steps：
Step 1：Raw material is weighed according to raw material components and the mass fraction proportioning of following concrete：14%-15% cement, 3.5%-
4.5% miberal powder, the ceramic polished micro mists of 2.5%-3.5%, 1%-2% superfined flyash, 70% aggregate, the poly- carboxylics of 0.4%-0.6%
Sour additive, 6.4%-6.6% mixing waters；The aggregate is made of sand and stone, sand coarse aggregate ratio ranging from 44%-50%；The sand
It is made of middle sand and fine sand, the stone is made of great Shi and gravelstone；The middle grain fineness number modulus be 2.4-2.6, the fine sand
Fineness modulus is 1.9-2.1；The big stone grain diameter is 10-20mm, and the gravelstone grain size is 5-10mm；Ceramic polished powder size
Ranging from 1-10 μm, specific surface area >=800m2/kg；Superfined flyash particle size distribution range is 1~5 μm, and particle shape is spherical junctions
Structure, specific surface area >=600m2/kg；
Step 2：Great Shi, gravelstone, ceramic polished micro mist and 60%~80% mixing water are mixed 60 in stirring container
~90s；Remaining raw material is poured into 240~300s of stirring in stirring container again, obtains concrete.
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| CN106587711B (en) * | 2016-12-16 | 2019-06-07 | 上海建工材料工程有限公司 | Special additive for self-dense concrete is used in a kind of perfusion of enclosure space |
| CN107721314B (en) * | 2017-11-10 | 2018-08-24 | 重庆富皇建筑工业化制品有限公司 | A kind of ready-mixed concrete and application thereof containing seven graded aggregates |
| CN108529975A (en) * | 2018-05-11 | 2018-09-14 | 郑涛涛 | A kind of concrete and preparation method thereof |
| CN109369114A (en) * | 2018-12-18 | 2019-02-22 | 中建西部建设(天津)有限公司 | A kind of self-compacting concrete |
| CN110606709A (en) * | 2019-04-12 | 2019-12-24 | 重庆建工建材物流有限公司 | Ultrahigh-strength self-compacting concrete for giant special-shaped steel pipe column and preparation method thereof |
| CN110451896A (en) * | 2019-09-18 | 2019-11-15 | 重庆大学 | The high-strength concrete of mixture viscosity is reduced based on admixture grain composition |
| CN117125930B (en) * | 2023-08-24 | 2024-03-08 | 广州兴业混凝土搅拌有限公司 | C80 high-polishing self-compacting concrete and preparation method thereof |
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| CN102617081A (en) * | 2012-04-05 | 2012-08-01 | 上海建工材料工程有限公司 | High-flow low-shrinkage C30 concrete capable of shielding radiation |
| CN105174854A (en) * | 2015-08-14 | 2015-12-23 | 黄贺明 | Powder concrete with ceramic polishing powder |
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| CN102617081A (en) * | 2012-04-05 | 2012-08-01 | 上海建工材料工程有限公司 | High-flow low-shrinkage C30 concrete capable of shielding radiation |
| CN105174854A (en) * | 2015-08-14 | 2015-12-23 | 黄贺明 | Powder concrete with ceramic polishing powder |
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