CN105948660B - A kind of high-strength superhigh tenacity concrete and preparation method thereof - Google Patents
A kind of high-strength superhigh tenacity concrete and preparation method thereof Download PDFInfo
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- CN105948660B CN105948660B CN201610412344.2A CN201610412344A CN105948660B CN 105948660 B CN105948660 B CN 105948660B CN 201610412344 A CN201610412344 A CN 201610412344A CN 105948660 B CN105948660 B CN 105948660B
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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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- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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Abstract
The present invention relates to a kind of high-strength superhigh tenacity concrete and preparation method thereof, the concrete is prepared by comprising the following components in parts by weight: 400-800 parts of cement, 100-250 parts of silicon ash, 200-500 parts of slag powders, 200-500 parts of flyash, 200-500 parts of silica flour, 800-1000 parts of quartz sand, 20-40 parts of water-reducing agent, 180-250 parts of water, 15-25 parts of polyethylene fibre；When preparation, cement, silicon ash, slag powders, flyash, silica flour and quartz sand are added in blender by weight, dry powder stirs 2-3min, is sufficiently mixed uniformly；It after to be mixed, is transferred in mold, the 1-2min that vibrates molding is conserved, demoulded, obtains the high-strength superhigh tenacity concrete.Compared with prior art, the compression strength of concrete of the present invention reaches 120-150MPa, and flexural strength reaches 30-50MPa, and tensile strength reaches 15-22MPa, and tension elongation percentage reaches 4-8%, has a good application prospect.
Description
Technical field
The invention belongs to building material technical field, it is related to a kind of high-strength superhigh tenacity concrete and preparation method thereof.
Background technique
Ultra-high performance concrete (Ultra high performance concrete, abbreviation UHPC) has specific strength height,
The characteristics of load capacity is big, economizes on resources with the energy, excellent in te pins of durability is able to satisfy civil engineering lightweight, high stratification, greatly across change
It is the main direction of development of concrete technology with the requirement of high durableization.UHPC is adopted in the nineties in last century by French researcher
There is superelevation compression strength, superelevation tensile strength, high tenacity and high-durability with what conventional material was developed.UHPC material root
2mm or more coarse aggregate is removed using high-densit cement base homogeneous system model according to closestpacking principle, while being mixed certain
The micro- steel fibre of volume is equipped with high temperature and steam-cured maintenance process, prepares the concrete of very-high performance.According to maintenance method with
And the difference of used raw material, compression strength reach 200 to 800MPa, flexural strength 20-40MPa, vertical pulling intensity is not
Less than 8MPa, the above numerical value is 4-6 times of high-strength concrete；The energy to failure of UHPC is up to 40000J/m2, is normal concrete
250 times, chloride ion permeability, freezing and thawing performance is above high-strength concrete, has superelevation durability.UHPC is in the structure
Using sectional dimension can be substantially reduced, dead load is reduced, is used for high-level structure, bridge large-span structure；On the other hand, it utilizes
The superelevation anti-permeability performance of UHPC is used in the pipeline and solid waste material process container of conveying corrosive liquid；Its is good
Good shock resistance, can be used in military defense engineering.
The patent of publication number CN104030634A discloses a kind of high-strength and high ductility Reactive Powder Concrete of carbon-doped nanometer tube,
It is prepared as a raw material, is mixed by cement, carbon nanotube, silicon ash, water-reducing agent, silica sand, flyash, silica flour, steel fibre and water
Each component content is calculated in object with mass fraction are as follows: and 1000-1200 parts of cement, 250-350 parts of silicon ash, 250-350 parts of slag powders,
40-50 parts of water-reducing agent, 1200-1400 parts of silica sand, 180-230 parts of water, 190-230 parts of steel fibre, 180-250 parts of flyash, stone
80-120 parts of English powder, 0.1-5 parts of Carbon nano-tube dispersant, 1-10 parts of carbon nanotube powder.The carbon-doped nanometer tube that the patent is prepared
Very-high performance Reactive Powder Concrete, compression strength reach 300MPa, and flexural strength reaches 55MPa, split at the beginning of when simple tension strong
Degree reaches 10.2MPa, ultimate tensile strength 11.5MPa, and elongation strain reaches 0.5%.Carbon nanometer is added in the patent formulation
Pipe enhances the mechanical property of concrete, but also improves the cost of such concrete, and its simple tension strain only has
0.52%, the slightly above yield strain of reinforcing bar, once being more than the value, there is the widened danger of localization in crack.
The patent of publication number CN101874004A discloses a kind of ductility ultra-high performance concrete, including 100 parts of Portlands
Cement；50 to 200 parts of sands or sand mixture with D10 to the D90 simple grain degree for being 0.063 to 5 millimeter, wherein most
The D10 to D90 of thin sand is 0.063 to 1 millimeter and the D10 to D90 of most thick sand is 1 to 5 millimeter；0 to 70 part average
Particle size is or mixtures thereof 15 microns of granular volcanic ash below or non-pozzolanic material；The super plasticising of 0.1 to 10 part of diminishing
Agent；10 to 30 parts of water；And the volume of the composition relative to hardening be 0.5 to 5 volume % draw ratio be 6 to 120 glass
Glass fiber.The patent has prepared a kind of high ductility UHPC using glass fibre and vinal, and flexural tensile strength is up to
20MPa, mid-span deflection/span ratio reaches 1/140, but the art solutions do not record one directional tensile test.It there is now
Studies have shown that traditional steel fibre UHPC concrete, the ductility of simple tension not can exceed that 0.6% so that such material by
Draw the use in area by larger limitation.
The patent of publication number CN101665342A discloses a kind of high-tenacity crack-control impervious fiber concrete, main component packet
Cement, active mineral admixture, aggregate, fiber and water are included, active mineral admixture uses flyash, silicon ash, granulated blast-furnace mine
Slag, metakaolin, fiber use vinal, polyethylene fibre, aromatic polyamide fibre, and the maximum particle diameter of aggregate is not
More than 0.5mm, the weight and the ratio between cement and active mineral admixture total weight of aggregate are 1%~70%, and the volume of fiber is
The 1.5%~2.5% of fiber concrete total volume.The compression strength of the patent concrete is between 40-60MPa, tensile strength
For 4-10MPa, flexural tensile strength 10-20MPa, limit tensile strain 1.8-7.5%, but the resistance to compression bullet of the patent concrete
Mould is low, and compression strength and flexural tensile strength also have the space further promoted.
Summary of the invention
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide one kind to have high pressure resistance
Degree, high-tensile, and it is able to maintain superelevation ductility, have the high-strength superhigh tenacity coagulation of good energy dissipation capacity and elasticity modulus
Soil and preparation method thereof, it is intended to solve the technical issues of existing cement-based material high intensity and high ductility can not get both.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of high-strength superhigh tenacity concrete, the concrete are prepared by comprising the following components in parts by weight: cement
400-800 parts, 100-250 parts of silicon ash, 200-500 parts of slag powders, 200-500 parts of flyash, 200-500 parts of silica flour, quartz
800-1000 parts of sand, 20-40 parts of water-reducing agent, 180-250 parts of water, 15-25 parts of polyethylene fibre.
The concrete is prepared by comprising the following components in parts by weight as a preferred technical solution: cement 600
Part, 150 parts of silicon ash, 200 parts of slag powders, 200 parts of flyash, 200 parts of silica flour, 850 parts of quartz sand, 25 parts of water-reducing agent, water 220
Part, 20 parts of polyethylene fibre.
The cement is composite Portland cement or ordinary portland cement, and resistance to compressions in 28 days of the cement
Intensity >=52.5MPa, 28 days flexural strength >=7.0MPa, specific surface area >=300m2/kg。
The specific surface area of the silicon ash is 20-25m2/ g, SiO2Mass content >=90%.
The slag powders are S105 grade slag powder or S115 grade slag powder, specific surface area >=700m2/ kg, density are
2.9g/cm3；The flyash is level-one flyash, specific surface area >=700m2/ kg, density 2.6g/cm3。
The partial size of the silica flour is 2-4 μm, SiO2Mass content >=99%；The partial size of the quartz sand is
0.1-0.3mm, SiO2Mass content >=99%.
The partial size of the silica flour is selected as 2-4 μm, between silicon ash and slag powders, is used as and fills out in whole system
Material is filled, and in High Temperature Curing, the SiO being rich in2Stronger volcano ash effect can be played to improve matrix strength；Partial size
Play the role of fine aggregate in system for 0.1-0.3mm quartz sand, partial size is crossed senior general and impacted to the dispersion of fiber.
The diameter of the polyethylene fibre is 30-45 μm, length 9-12mm, draw ratio > 200, and fracture elongation is
2-3%.
The tensile strength of the polyethylene fibre is 3000MPa as a preferred technical solution,.
The polyethylene fibre plays the role of toughening concrete substrate in formula system, and the concrete is enable to produce
Raw continuous thin and close crack.On the one hand fibre diameter, draw ratio, breaking strength and fracture elongation are produced by fiber
The technical matters of producer controls, and is on the other hand obtained by theoretical calculation and test allotment.Fiber Aspect Ratio is excessive, be easy to cause
Break of CFRP, draw ratio is insufficient, be easy to cause spike protein gene, and concrete cannot both be made to generate the fine and closely woven crack of connection.
The water-reducing agent is non-slow-setting polycarboxylic acid water reducing agent, and the solid content of the non-slow-setting polycarboxylic acid water reducing agent is
40-50%, water-reducing rate >=40%.
A kind of preparation method of high-strength superhigh tenacity concrete, this method specifically includes the following steps:
(1) it stocks up by the component of following parts by weight:
400-800 parts of cement, 100-250 parts of silicon ash, 200-500 parts of slag powders, 200-500 parts of flyash, silica flour
200-500 parts, 800-1000 parts of quartz sand, 20-40 parts of water-reducing agent, 180-250 parts of water, 15-25 parts of polyethylene fibre；
(2) cement, silicon ash, slag powders, flyash, silica flour and quartz sand are added in blender by weight, dry powder
2-3min is stirred, is sufficiently mixed uniformly；
(3) it after to be mixed, is transferred in mold, the 1-2min that vibrates molding is conserved, demoulded, and is obtained described
High-strength superhigh tenacity concrete.
The maintenance is that room temperature standard curing or high temperature bath conserve；Wherein,
The condition of the room temperature standard curing are as follows: controlled at 20-25 DEG C, humidity is 90% ± 5%, maintenance 28
It；
The condition of the high temperature bath maintenance are as follows: controlled at 85-95 DEG C, water-bath is conserved 48 hours.
The condition of the room temperature standard curing as a preferred technical solution, are as follows: controlled at 20 DEG C, humidity is
90% ± 5%, it conserves 28 days.
The condition of high temperature bath maintenance as a preferred technical solution, are as follows: controlled at 90 DEG C, water-bath is conserved
48 hours.
In concrete formulation of the present invention, using flyash, slag powders, silicon ash, silica flour and quartz sand as active mine
Object spike, cement is aggregate, and water-reducing agent and reinforcing fiber is used in combination, by suitable component compatibility, by compression strength with
Tensile strength and tension ductility combine well, and tensile strength and the more traditional ultra-high performance concrete of elongation percentage have bright
It is aobvious to be promoted.
Compared with prior art, the invention has the characteristics that:
1) concrete of the present invention keeps the simple tension ductility of superelevation while reaching high compressive strength, tensile strength,
Its compression strength is about 150MPa, and simple tension first crack strength can reach 10MPa, and ultimate strength has very high close to 20MPa
Tensile pressure ratio, simple tension ductility are able to maintain in 4%-8%, are 10 times of elongation percentage of existing UHPC material or more；
2) there is good microcrack distribution performance and good energy-dissipating property；
3) preparation method is simple, and raw material sources are extensive, and economic cost is low, is suitable for large-scale industry Application in Building.
Detailed description of the invention
Fig. 1 is the simple tension stress strain diagram of label 1-3 concrete in embodiment 1；
Fig. 2 is bending stress-amount of deflection figure of label 1-3 concrete in embodiment 1.
Specific embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
It is well known, commercially available industrial chemicals if not raw material used in embodiment refer in particular to.
Containing there are three product in this example of embodiment 1:(, number is denoted as 1-1,1-2,1-3 respectively)
The high-strength superelevation ductility concrete of this implementation, including P.O.52.5 ordinary portland cement, ultrafine slag powder, superfine powder
Coal ash, silicon ash, silica flour, quartz sand, water-reducing agent, tap water and polyethylene fibre.Each component is as shown in table 1 below, each in table
Part is parts by weight content, wherein polyethylene fibre length is 12mm, draw ratio 400 in table 1.
1 product component of table and parts by weight content
| Label | Cement | Silicon ash | Slag powders | Flyash | Silica flour | Quartz sand | Water-reducing agent | Water | Polyethylene fibre |
| 1-1 | 600 | 150 | 200 | 200 | 200 | 850 | 25 | 220 | 15 |
| 1-2 | 600 | 150 | 200 | 200 | 200 | 850 | 25 | 220 | 20 |
| 1-3 | 600 | 150 | 200 | 200 | 200 | 850 | 25 | 220 | 25 |
The preparation process of the high-strength superelevation ductility concrete of this example is as follows:
(1) by 600 parts of cement, 150 parts of silicon ash, 200 parts of ultrafine slag powder, 200 parts of superfined flyash, 200 parts of silica flour,
850 parts of quartz sand, blender is added, dry powder stirs 2-3 clock, is uniformly mixed；
(2) mixing liquid of water-reducing agent and water is added, stirs 5-6 minutes, dry powder is slurried；
(3) fiber is mixed in batches, is stirred 10-12 minutes, is guaranteed that fiber is uniformly dispersed；
(4) it after the completion of stirring, is put into mold, vibrates 1-2 minutes and form；
(5) it is conserved, 90 DEG C of water-baths of high temperature conserve 48 hours, demould up to this product.
The results are shown in Table 2 for the mechanical property test of product obtained.
2 product mechanical property experimental test result of table
Containing there are two product in this example of embodiment 2:(, number is denoted as 2-1,2-2 respectively)
The high-strength superelevation ductility concrete of the present embodiment, including P.O.52.5 ordinary portland cement, slag powders, level-one fine coal
Ash, silicon ash, silica flour, quartz sand, water-reducing agent, tap water and polyethylene fibre.Each component is as shown in table 3, each section in table
For parts by weight content, wherein polyethylene fibre length is 9mm, draw ratio 300, poly- second in 2-2 product in 2-1 product in table 3
Alkene fibre length is 12mm, draw ratio 400.
3 product component of table and parts by weight content
| Label | Cement | Silicon ash | Slag powders | Flyash | Silica flour | Quartz sand | Water-reducing agent | Water | Polyethylene fibre |
| 2-1 | 600 | 150 | 200 | 200 | 200 | 850 | 25 | 220 | 15 |
| 2-2 | 600 | 150 | 200 | 200 | 200 | 850 | 25 | 220 | 20 |
The preparation process of high-strength superelevation ductility concrete described in this example is as follows:
(1) by 600 parts of cement, 150 parts of silicon ash, 200 parts of slag powders, 200 parts of level-one flyash, 200 parts of silica flour, quartz
850 parts of sand, blender is added, dry powder stirs 2-3 clock, is uniformly mixed；
(2) mixing liquid of water-reducing agent and water is added, stirs 5-6 minutes, dry powder is slurried；
(3) fiber is mixed in batches, is stirred 10-12 minutes, is guaranteed that fiber is uniformly dispersed；
(4) it after the completion of stirring, is put into mold, vibrates 1-2 minutes and form；
(5) it being conserved, 90 DEG C of water-baths of high temperature conserve 48 hours, it demoulds up to this product,
The results are shown in Table 4 for the mechanical property test of product obtained.
4 product mechanical property experimental test result of table
Containing there are three product in this example of embodiment 3:(, number is denoted as 3-1,3-2,3-3 respectively)
The high-strength superelevation ductility concrete of this implementation, including P.O.52.5 ordinary portland cement, ultrafine slag powder, superfine powder
Coal ash, silicon ash, silica flour, quartz sand, water-reducing agent, tap water and polyethylene fibre.Each component is as shown in table 5 below, each in table
Part is parts by weight content, wherein polyethylene fibre length is 12mm, draw ratio 400 in table 5.
5 product component of table and parts by weight content
| Label | Cement | Silicon ash | Slag powders | Flyash | Quartz sand | Water-reducing agent | Water | Polyethylene fibre |
| 3-1 | 600 | 150 | 400 | 200 | 850 | 25 | 220 | 15 |
| 3-2 | 600 | 150 | 400 | 200 | 850 | 25 | 220 | 20 |
| 3-3 | 600 | 150 | 400 | 200 | 850 | 25 | 220 | 25 |
The preparation process of the high-strength superelevation ductility concrete of the present embodiment is as follows:
(1) by 600 parts of cement, 150 parts of silicon ash, 400 parts of ultrafine slag powder, 200 parts of superfined flyash, 850 parts of quartz sand,
Blender is added, dry powder stirs 2-3 clock, is uniformly mixed；
(2) mixing liquid of water-reducing agent and water is added, stirs 5-6 minutes, dry powder is slurried；
(3) fiber is mixed in batches, is stirred 10-12 minutes, is guaranteed that fiber is uniformly dispersed；
(4) it after the completion of stirring, is put into mold, vibrates 1-2 minutes and form；
(5) it is conserved, curing condition is divided into room temperature standard curing 28 days.Room temperature standard curing Conditions Temperature is 20 DEG C,
Humidity is 90% ± 5%.
The results are shown in Table 6 for the mechanical property test of product obtained.
6 product mechanical property experimental test result of table
Embodiment 4:
The high-strength superhigh tenacity concrete of the present embodiment, is prepared by comprising the following components in parts by weight: 600 parts of cement,
180 parts of silicon ash, 350 parts of slag powders, 420 parts of flyash, 320 parts of silica flour, 800 parts of quartz sand, 32 parts of water-reducing agent, 200 parts of water,
18 parts of polyethylene fibre.
Wherein, cement is composite Portland cement, 28 days compression strength >=52.5MPa of the cement, 28 days flexural strengths
>=7.0MPa, specific surface area >=300m2/kg；The specific surface area 20m of silicon ash2/ g, SiO2Mass content >=90%；Slag powders
For S105 grade slag powder, specific surface area >=700m2/ kg, density 2.9g/cm3；Flyash be level-one flyash, specific surface area >=
700m2/ kg, density 2.6g/cm3；The partial size of silica flour is 2 μm, SiO2Mass content >=99%；The partial size of quartz sand
For 0.1mm, SiO2Mass content >=99%；The diameter of polyethylene fibre is 30 μm, length 9mm, draw ratio > 200,
Fracture elongation is 2%；Water-reducing agent is non-slow-setting polycarboxylic acid water reducing agent, the solid content of the non-slow-setting polycarboxylic acid water reducing agent
It is 40%, water-reducing rate >=40%.
The preparation method of the high-strength superhigh tenacity concrete of the present embodiment specifically includes the following steps:
(1) it stocks up by the component of following parts by weight:
600 parts of cement, 180 parts of silicon ash, 350 parts of slag powders, 420 parts of flyash, 320 parts of silica flour, 800 parts of quartz sand,
32 parts of water-reducing agent, 200 parts of water, 18 parts of polyethylene fibre；
(2) cement, silicon ash, slag powders, flyash, silica flour and quartz sand are added in blender by weight, dry powder
2min is stirred, is sufficiently mixed uniformly；
(3) it after to be mixed, is transferred in mold, the 1min that vibrates molding is conserved, demoulded, and is obtained high-strength super
High tenacity concrete.
Wherein, maintenance described in step (3) is room temperature standard curing, condition are as follows: controlled at 25 DEG C, humidity is
95%, it conserves 28 days.
Embodiment 5:
The high-strength superhigh tenacity concrete of the present embodiment, is prepared by comprising the following components in parts by weight: 400 parts of cement,
100 parts of silicon ash, 200 parts of slag powders, 200 parts of flyash, 200 parts of silica flour, 800 parts of quartz sand, 20 parts of water-reducing agent, 180 parts of water,
15 parts of polyethylene fibre.
Wherein, cement is composite Portland cement, 28 days compression strength >=52.5MPa of the cement, 28 days flexural strengths
>=7.0MPa, specific surface area >=300m2/kg；The specific surface area 25m of silicon ash2/ g, SiO2Mass content >=90%；Slag powders
For S115 grade slag powder, specific surface area >=700m2/ kg, density 2.9g/cm3；Flyash be level-one flyash, specific surface area >=
700m2/ kg, density 2.6g/cm3；The partial size of silica flour is 4 μm, SiO2Mass content >=99%；The partial size of quartz sand
For 0.3mm, SiO2Mass content >=99%；The diameter of polyethylene fibre is 45 μm, length 12mm, draw ratio > 200,
Fracture elongation is 3%；Water-reducing agent is non-slow-setting polycarboxylic acid water reducing agent, the solid content of the non-slow-setting polycarboxylic acid water reducing agent
It is 50%, water-reducing rate >=40%.
The preparation method of the high-strength superhigh tenacity concrete of the present embodiment specifically includes the following steps:
(1) it stocks up by the component of following parts by weight:
400 parts of cement, 100 parts of silicon ash, 200 parts of slag powders, 200 parts of flyash, 200 parts of silica flour, 800 parts of quartz sand,
20 parts of water-reducing agent, 180 parts of water, 15 parts of polyethylene fibre；
(2) cement, silicon ash, slag powders, flyash, silica flour and quartz sand are added in blender by weight, dry powder
3min is stirred, is sufficiently mixed uniformly；
(3) it after to be mixed, is transferred in mold, the 2min that vibrates molding is conserved, demoulded, and is obtained high-strength super
High tenacity concrete.
Wherein, the maintenance in step (3) is room temperature standard curing, condition are as follows: controlled at 95 DEG C, water-bath maintenance 48 is small
When.
Embodiment 6:
The high-strength superhigh tenacity concrete of the present embodiment, is prepared by comprising the following components in parts by weight: 800 parts of cement,
250 parts of silicon ash, 500 parts of slag powders, 500 parts of flyash, 500 parts of silica flour, 1000 parts of quartz sand, 40 parts of water-reducing agent, water 250
Part, 25 parts of polyethylene fibre.
Wherein, cement is composite Portland cement, 28 days compression strength >=52.5MPa of the cement, 28 days flexural strengths
>=7.0MPa, specific surface area >=300m2/kg；The specific surface area 24m of silicon ash2/ g, SiO2Mass content >=90%；Slag powders
For S115 grade slag powder, specific surface area >=700m2/ kg, density 2.9g/cm3；Flyash be level-one flyash, specific surface area >=
700m2/ kg, density 2.6g/cm3；The partial size of silica flour is 3 μm, SiO2Mass content >=99%；The partial size of quartz sand
For 0.2mm, SiO2Mass content >=99%；The diameter of polyethylene fibre is 36 μm, length 10mm, draw ratio > 200,
Fracture elongation is 3%；Water-reducing agent is non-slow-setting polycarboxylic acid water reducing agent, the solid content of the non-slow-setting polycarboxylic acid water reducing agent
It is 48%, water-reducing rate >=40%.
The preparation method of the high-strength superhigh tenacity concrete of the present embodiment specifically includes the following steps:
(1) it stocks up by the component of following parts by weight:
800 parts of cement, 250 parts of silicon ash, 500 parts of slag powders, 500 parts of flyash, 500 parts of silica flour, 1000 parts of quartz sand,
40 parts of water-reducing agent, 250 parts of water, 25 parts of polyethylene fibre；
(2) cement, silicon ash, slag powders, flyash, silica flour and quartz sand are added in blender by weight, dry powder
3min is stirred, is sufficiently mixed uniformly；
(3) it after to be mixed, is transferred in mold, the 2min that vibrates molding is conserved, demoulded, and is obtained high-strength super
High tenacity concrete.
Wherein, the maintenance in step (3) is high temperature bath maintenance, condition are as follows: controlled at 85 DEG C, water-bath maintenance 48 is small
When.
The above embodiments are merely examples for clarifying the description, and does not limit the embodiments.For institute
For the those of ordinary skill in field, other various forms of variations or change can also be made on the basis of the above description
It is dynamic.Here all embodiments are exhaustive without also method, and the obvious changes or variations thus drawn still belong to
Within the invention scope of protection of the claims.
Claims (5)
1. a kind of high-strength superhigh tenacity concrete, which is characterized in that the concrete by comprise the following components in parts by weight preparation and
At: 600 parts of cement, 150 parts of silicon ash, 200 parts of slag powders, 200 parts of flyash, 200 parts of silica flour, 850 parts of quartz sand, water-reducing agent
25 parts, 220 parts of water, 20 parts of polyethylene fibre；The partial size of the silica flour is 2-4 μm, SiO2Mass content >=99%；
The partial size of the quartz sand is 0.1-0.3mm, SiO2Mass content >=99%；The diameter of the polyethylene fibre is
30-45 μm, length 9-12mm, draw ratio > 200, fracture elongation 2-3%, the tensile strength of the polyethylene fibre
For 3000MPa；The specific surface area 20-25m of the silicon ash2/ g, SiO2Mass content >=90%；The slag powders are
S105 grade slag powder or S115 grade slag powder, specific surface area >=700m2/ kg, density 2.9g/cm3；The flyash is one
Grade flyash, specific surface area >=700m2/ kg, density 2.6g/cm3；
The compression strength of the concrete is 148MPa, flexural strength 38MPa, and just splitting tensile strength is 8.8MPa, ultimate elongation
Intensity is 18.4MPa, elongation strain 8.0%.
2. a kind of high-strength superhigh tenacity concrete according to claim 1, which is characterized in that the cement is comprehensive silicon
Acid salt cement or ordinary portland cement, and 28 days compression strength >=52.5MPa of the cement, 28 days flexural strengths
>=7.0MPa, specific surface area >=300m2/kg。
3. a kind of high-strength superhigh tenacity concrete according to claim 1, which is characterized in that the water-reducing agent is non-slow
Solidifying type polycarboxylate water-reducer, the solid content of the non-slow-setting polycarboxylic acid water reducing agent are 40-50%, water-reducing rate >=40%.
4. a kind of preparation method of high-strength superhigh tenacity concrete as described in any one of claims 1 to 3, which is characterized in that
This method specifically includes the following steps:
(1) it stocks up by the component of following parts by weight:
600 parts of cement, 150 parts of silicon ash, 200 parts of slag powders, 200 parts of flyash, 200 parts of silica flour, 850 parts of quartz sand, diminishing
25 parts of agent, 220 parts of water, 20 parts of polyethylene fibre；
(2) cement, silicon ash, slag powders, flyash, silica flour and quartz sand are added in blender by weight, dry powder stirring
2-3min is sufficiently mixed uniformly；
(3) it after to be mixed, is transferred in mold, the 1-2min that vibrates molding is conserved, demoulded, obtains the height
Strong superhigh tenacity concrete.
5. a kind of preparation method of high-strength superhigh tenacity concrete according to claim 4, which is characterized in that described supports
Shield is that room temperature standard curing or high temperature bath conserve；Wherein,
The condition of the room temperature standard curing are as follows: controlled at 20-25 DEG C, humidity is 90% ± 5%, is conserved 28 days；
The condition of the high temperature bath maintenance are as follows: controlled at 85-95 DEG C, water-bath is conserved 48 hours.
Priority Applications (1)
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103922662A (en) * | 2014-03-18 | 2014-07-16 | 上海罗洋新材料科技有限公司 | Ultra-high performance cement base composite material |
| CN104294728A (en) * | 2014-09-22 | 2015-01-21 | 中国建筑股份有限公司 | Fabricated type reactive powder concrete prefabricated pavement slab without reinforcing rib and manufacturing method thereof |
| CN104556881A (en) * | 2015-01-19 | 2015-04-29 | 黄政宇 | Ultrahigh-toughness concrete and preparation method thereof |
| CN104860613A (en) * | 2015-06-10 | 2015-08-26 | 上海建工材料工程有限公司 | 160MPa super-strength concrete with high cracking resistance and high fluidity |
| CN105198339A (en) * | 2015-10-28 | 2015-12-30 | 上海罗洋新材料科技有限公司 | Ultrahigh-performance cement-based composite material |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101665342B (en) * | 2009-09-18 | 2012-01-18 | 徐世烺 | High-tenacity crack-control impervious fiber concrete |
| US20150135997A1 (en) * | 2012-05-22 | 2015-05-21 | The Curators Of The University Of Missouri | Internal curing composition for concrete mixtures |
-
2016
- 2016-06-14 CN CN201610412344.2A patent/CN105948660B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103922662A (en) * | 2014-03-18 | 2014-07-16 | 上海罗洋新材料科技有限公司 | Ultra-high performance cement base composite material |
| CN104294728A (en) * | 2014-09-22 | 2015-01-21 | 中国建筑股份有限公司 | Fabricated type reactive powder concrete prefabricated pavement slab without reinforcing rib and manufacturing method thereof |
| CN104556881A (en) * | 2015-01-19 | 2015-04-29 | 黄政宇 | Ultrahigh-toughness concrete and preparation method thereof |
| CN104860613A (en) * | 2015-06-10 | 2015-08-26 | 上海建工材料工程有限公司 | 160MPa super-strength concrete with high cracking resistance and high fluidity |
| CN105198339A (en) * | 2015-10-28 | 2015-12-30 | 上海罗洋新材料科技有限公司 | Ultrahigh-performance cement-based composite material |
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