CN106116333A - A kind of gradient building enclosure heat-resistance high-strength concrete and preparation method thereof - Google Patents
A kind of gradient building enclosure heat-resistance high-strength concrete and preparation method thereof Download PDFInfo
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- CN106116333A CN106116333A CN201610451323.1A CN201610451323A CN106116333A CN 106116333 A CN106116333 A CN 106116333A CN 201610451323 A CN201610451323 A CN 201610451323A CN 106116333 A CN106116333 A CN 106116333A
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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
- C04B28/06—Aluminous 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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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/76—Use at unusual temperatures, e.g. sub-zero
- C04B2111/763—High temperatures
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a kind of gradient building enclosure heat-resistance high-strength concrete, it is made up of internal layer high-strength heat-resisting concrete and outer floor height heat resistance concrete from inside to outside, described internal layer high-strength heat-resisting concrete is with silicate-base cement, flyash, breeze, fluvial sand, basalt graded broken stone, toughened fiber, polycarboxylate water-reducer, interior maintenance light-weight aggregate and water as raw material, and outer floor height heat resistance concrete is with aluminum base cement, aloxite, aluminum stone, doughnut, polycarboxylate water-reducer, interior maintenance light-weight aggregate and water as raw material.The present invention can be converted into nonhydratable aluminium oxide ceramics phase in high temperature by design gradient enclosed structure, the monocalcium aluminate, the aluminic acid dicalcium that generate in hot environment China and foreign countries floor height heat resistance concrete, is firmly bonded with aluminum stone, aloxite etc., dramatically increase its resistance to elevated temperatures；In internal layer high-strength heat-resisting concrete, use flyash and the breeze of large dosage, ensure its durability, can effectively solve the loss of strength in hot environment of existing normal silicate heat resistance concrete and wait deficiency soon.
Description
Technical field
The invention belongs to building material technical field, be specifically related to a kind of gradient building enclosure heat resistance concrete and preparation thereof
Method.
Background technology
Heat resistance concrete refers to that, under 200～1300 DEG C of high temperature long terms, its physical property, mechanical property are not broken
Bad, and there is good heat impact strength, the dry-shrinkage deformed special high-strength concrete of little one under high temperature action.Tradition
Heat resistance concrete many employings Portland cement, portland slag cement etc. be Binder Materials, use broken after natural
Rock is aggregate.It is overall that concrete forms solid structure after curing, but the alkali contents such as calcium hydroxide are higher, at 500 DEG C
Can resolve into calcium oxide and water under high temperature so that volume of concrete reduces, the calcium oxide volume subsequently generated can expand rapidly again,
This drastically contractility causes concrete to form more hole and crack in hot environment, and water mudrock structure is fluffy and cement
Stone reduces with aggregate caking property.It addition, when this kind of concrete is in the atmosphere that temperature is 800 DEG C, its interior hydrated calcium silicate
(C-S-H) can be dehydrated and cause intensity to completely lose.
In recent years, due to the fast development of industry, the heat resistance of concrete is proposed requirement, especially in metallurgical, change
The industry such as work, building materials；But normal concrete is susceptible to internal physical structure change when running into high temperature, cause cement gel to be tied
Structure dehydration, aggregate expanded by heating, Behavior of Hardened Cement Paste and the aggregate coefficient of expansion are inharmonious and cause xoncrete structure deformation.So finding one
The fireproofing and heat resistant concrete planting function admirable is those skilled in the art's urgent problems.
Summary of the invention
Waiting deficiency soon for solving the loss of strength in hot environment of existing normal silicate heat resistance concrete, the present invention proposes
A kind of gradient building enclosure heat-resistance high-strength concrete and preparation method thereof, can be effectively improved the heat resistance of concrete, reduces
Concrete strength loss rate.
For achieving the above object, the technical solution used in the present invention is:
A kind of gradient building enclosure heat-resistance high-strength concrete, it is from inside to outside by internal layer high-strength heat-resisting concrete and outer floor height
Heat resistance concrete is constituted, and wherein said internal layer high-strength heat-resisting concrete is with silicate-base cement, flyash, breeze, fluvial sand, the Black Warrior
Rock graded broken stone, fiber, polycarboxylate water-reducer, interior maintenance light-weight aggregate and water are that raw material is prepared from, outer floor height heat resistance concrete
It is prepared from aluminum base cement, aloxite, aluminum stone, doughnut, polycarboxylate water-reducer, interior maintenance light-weight aggregate and water for raw material；Outward
Floor height heat resistance concrete area of section is 1:(1-4 with the ratio of internal layer high-strength heat-resisting concrete).
In such scheme, in described internal layer high-strength heat-resisting concrete, the addition of each raw material is: silicate-base cement 160-
220kg/m3, flyash 80-120kg/m3, breeze 60-120kg/m3, fluvial sand 780-860kg/m3, basalt graded broken stone 950-
1050kg/m3, toughened fiber 2-6kg/m3, polycarboxylate water-reducer 3-6kg/m3, water-cement ratio controls at 0.35-0.45, and interior maintenance is light
Gather materials account for internal layer high-strength heat-resisting concrete volume (in internal layer high-strength heat-resisting concrete in addition to interior maintenance light-weight aggregate other raw material volume
Sum) 1～2%.
In such scheme, in described outer floor height heat resistance concrete, the addition of each raw material is: aluminum base cement 350-450kg/
m3, aloxite 800-950kg/m3, aluminum stone 900-1050kg/m3, doughnut 2-6kg/m3, polycarboxylate water-reducer 3-6kg/m3, water
Glue ratio controls at 0.35-0.45, and interior maintenance light-weight aggregate accounts for outer layer high-strength heat-resisting concrete (except interior in internal layer high-strength heat-resisting concrete
Maintenance light-weight aggregate other raw material volume sums outer) volume 0.5～1%.
In such scheme, described interior maintenance light-weight aggregate is the one in leca, haydites of book structure, lytag or many
Kind；Full water is needed to process 24 hours (maintenance light-weight aggregate in full water) before using.
In such scheme, described silicate-base cement is portland cement, Portland cement, portland slag cement
In one.
In such scheme, flyash is I grade or II grade of flyash；Breeze is S95 level and above breeze.
In such scheme, described toughened fiber is polyethylene fibre, vinal, polypropylene fibre, steel fibre, many
One or more in brilliant mullite fiber.
In such scheme, described aluminum base cement is the one in alumina cement, fine aluminium acid salt cement.
In such scheme, described aluminum stone is 5-16mm continuous grading, water absorption rate≤2%；Described aloxite modulus of fineness 2.0-
2.5, water absorption rate≤5%.
In such scheme, described doughnut is hollow polypropylene fibres, hollow alkali-resistant glass fibre, hollow polyester fibre
In one or more.
The preparation method of above-mentioned a kind of gradient enclosed structure heat-resistance high-strength concrete, comprises the steps: 1) respectively by joining
Than preparation internal layer high-strength heat-resisting concrete and outer floor height heat resistance concrete: respectively by weigh in addition to polycarboxylate water-reducer and water
Raw material add in agitated kettle and stir, be subsequently adding water and polycarboxylate water-reducer stir, prepare internal layer respectively high-strength
Heat resistance concrete and outer floor height heat resistance concrete；2) first pour internal layer high-strength heat-resisting concrete, treat internal layer high-strength heat-resisting concrete
Pour outer floor height heat resistance concrete after hardened forming again, obtain described gradient enclosed structure heat-resistance high-strength concrete.
The principle of the present invention is: 1) maintenance light-weight aggregate in full water is respectively added to internal layer high-strength heat-resisting concrete and outer layer
In high heat resistance concrete, adding inside concrete heat and Water Transport passage, light-weight aggregate inner porosity is at high temperature
In environment, Free water and the part of evaporation combine water and provide pressure release approach, effectively prevent concrete explosive spalling phenomenon.2) will
Toughened fiber introduces in internal layer high-strength heat-resisting concrete, adds the anti-toughness of concrete, crack resistance, adds Behavior of Hardened Cement Paste bonding
Intensity, has blocked the extension of inside concrete micro-crack so that thermal stress concentrates on fiber ends and dissipated；By outside
Introducing doughnut in floor height heat resistance concrete, hollow structure can be to provide sufficient water to participate in aquation the hydrated cementitious phase, makes
Obtaining cement stone interface transition region structure finer and close, during use, doughnut effectively can provide volume empty for high-temperature vapor
Gap, reduces the evaporation loss of moisture, and doughnut and interior maintenance light-weight aggregate add the inside of outer floor height heat resistance concrete simultaneously
Effectively humidity, promotes hydrated cementitious degree, improves interfacial adhesion.3) by design gradient enclosed structure, in hot environment
The monocalcium aluminate, the aluminic acid dicalcium that generate in floor height heat resistance concrete (external maintenance) at home and abroad can convert in high temperature (>=1200 DEG C)
For nonhydratable aluminium oxide ceramics phase, it is allowed to be firmly bonded with aluminum stone, aloxite etc., significantly increases its resistance to elevated temperatures；At internal layer
High-strength heat-resisting concrete uses flyash and the breeze of large dosage so that the calcium hydroxide in concrete in hot environment with
Silicon dioxide, aluminium oxide and disilicon trioxide isoreactivity composition generation secondary reaction of hydration form nonhydratable product, strengthen equally
Carry out its durability.
The invention have the benefit that
1) use this gradient enclosed structure heat resistance concrete can improve the heat resistance more than 200 DEG C of concrete, effectively drop
Low concrete structural strength loss rate, significantly improves xoncrete structure resistance to elevated temperatures；
2) doughnut in this gradient enclosed structure heat resistance concrete and porous ceramic grain improve inside concrete humidity
, improve inside concrete aquation intensity, the diffusion for moisture in high temperature and thermal stress simultaneously provides passage, improves coagulation
Soil resistance to elevated temperatures, provide safety assurance for xoncrete structure, concrete heat resistance can reach 1000 DEG C and more than；
3) strength grade of concrete height and the resistance to elevated temperatures prepared by this gradient enclosed structure are excellent, and building is prevented fires
Performance is greatly improved, and provides safeguard for the comfortable life of fabric structure safety and people.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment 1 gained gradient enclosed structure heat-resistance high-strength concrete.
Fig. 2 is the structural representation of embodiment 2 gained gradient enclosed structure heat-resistance high-strength concrete.
Fig. 3 is the structural representation of embodiment 3 gained gradient enclosed structure heat-resistance high-strength concrete.
In figure, 1 is that outer floor height heat resistance concrete is constituted, and 2 is internal high-strength heat-resisting concrete.
Detailed description of the invention
In order to be more fully understood that the present invention, it is further elucidated with present disclosure below in conjunction with embodiment, but the present invention is not
It is limited only to the following examples.
In following example as no specific instructions, the reagent of employing is commercially available chemical reagent or industrial products.
In following example, described silicate-base cement is the new P O42.5 Portland cement of China, described flyash
For II grade of flyash of Wuhan Yangluo, fineness (0.045mm tails over) 24%, water demand ratio 98%, loss on ignition 4.5%；Described breeze
For steel China S95 level breeze, specific surface area 434m2/ kg, 7 days activity indexs 76%, 28 days activity indexs 96%；Described basalt
Graded broken stone is 5-16mm continuous grading, and apparent density is 2718kg/m3, elongated particles 4.3%, crush values 7.4%；Described
Fluvial sand is Dongting Lake medium sand, apparent density 2680kg/m3, modulus of fineness: 2.9, clay content 2.1%.
Described aluminum base cement is CA-80 special type fire cement (alumina cement) of Zhengzhou Yu Xiang special cement company limited；
Aluminum stone is 5-16mm continuous grading, apparent density 2610kg/m3, water absorption rate 1.6%；Aloxite is medium sand, apparent density 2600kg/
m3, modulus of fineness 2.2, clay content 1.2%, water absorption rate 2.3%.
Described polycarboxylate water-reducer is western card polycarboxylate water-reducer, water-reducing rate 23%, solid content 25%, and volume is 1.0%.
The preparation method of described gradient enclosed structure heat-resistance high-strength concrete comprises the steps: 1) prepare by proportioning respectively
Internal layer high-strength heat-resisting concrete and outer floor height heat resistance concrete: the raw material in addition to polycarboxylate water-reducer and water that will weigh respectively
Add stirring 1min in agitated kettle, be subsequently adding water and polycarboxylate water-reducer stirs, prepare internal layer high-strength temperature-resistant respectively and mix
Solidifying native and outer floor height heat resistance concrete；2) first pour internal layer high-strength heat-resisting concrete, treat that internal layer high-strength heat-resisting concrete hardens into
Pour outer floor height heat resistance concrete after type again, obtain described gradient enclosed structure heat-resistance high-strength concrete.
The employing hollow polypropylene fibres of doughnut described in following example (list of references: Hu Jiwen etc. hard elastics gathers
The formation of propylene doughnut. membrane science and technology, 2002,5 (22)), hollow alkali-resistant glass fibre (list of references: Sun Ling, king
State peak. hollow glass fibre obturator and concrete matching research. Heilongjiang Institute of Technology's journal (natural science edition),
2009,23 (2)), hollow polyester fibre (offer of Nantong Luo Lai chemical fibre Co., Ltd).
Embodiment 1
A kind of gradient enclosed structure heat-resistance high-strength concrete, it is from inside to outside by internal layer high-strength heat-resisting concrete and outer floor height
Heat resistance concrete constitutes (sectional view is shown in Fig. 1), its ectomesoderm height heat resistance concrete area of section and internal layer high-strength heat-resisting concrete
Ratio be 1:2.5.The match ratio of internal layer high-strength heat-resisting concrete and outer floor height heat resistance concrete is shown in Tables 1 and 2 respectively；Test knot
Fruit is shown in Table 3.
Match ratio (the kg/m of internal layer high-strength heat-resisting concrete in table 1 embodiment 13)
Wherein, interior maintenance light-weight aggregate uses haydites of book structure, bulk density 830kg/m3, letter Compressive Strength 2.5Mpa, before test
Full water drains away the water for 24 hours, and addition is the 2.0% of internal layer high-strength heat-resisting concrete volume；Toughened fiber uses polypropylene fine
Dimension.
Match ratio (the kg/m of table 2 embodiment 1 China and foreign countries floor height heat resistance concrete3)
Wherein, interior maintenance light-weight aggregate uses leca, bulk density 820kg/m3, letter Compressive Strength 3.5Mpa, before test
Full water drains away the water for 24 hours, and addition is the 1.0% of outer floor height heat resistance concrete volume；Doughnut uses hollow polypropylene
Fiber.
Carry out testing concrete performance with reference to YBT 4252-2011 " heat resistance concrete application technology code ", the results are shown in Table
3。
The performance test results of table 3 embodiment 1 gained gradient enclosed structure heat-resistance high-strength concrete
Embodiment 2
A kind of gradient enclosed structure heat-resistance high-strength concrete, it is from inside to outside by internal layer high-strength heat-resisting concrete and outer floor height
Heat resistance concrete constitutes (sectional view is shown in Fig. 2), its ectomesoderm height heat resistance concrete area of section and internal layer high-strength heat-resisting concrete
Ratio be 1:3.5；The match ratio of internal layer high-strength heat-resisting concrete and outer floor height heat resistance concrete is shown in Table 4 and table 5 respectively；Performance is surveyed
Test result is shown in Table 6.
Match ratio (the kg/m of internal layer high-strength heat-resisting concrete in table 4 embodiment 23)
Wherein, light-weight aggregate uses haydites of book structure, bulk density 750kg/m3, letter Compressive Strength 3.0Mpa, full water 24 before test
Hour draining away the water, addition is the 1.7% of internal layer high-strength heat-resisting concrete volume；Toughened fiber uses steel fibre.
Match ratio (the kg/m of table 5 embodiment 2 China and foreign countries floor height heat resistance concrete3)
Wherein, interior maintenance light-weight aggregate uses lytag, bulk density 680kg/m3, letter Compressive Strength 2.5Mpa, test
Front full water drains away the water for 24 hours, and addition is the 0.7% of outer floor height heat resistance concrete volume；Doughnut uses hollow polyester
Fiber.
Carry out testing concrete performance with reference to YBT 4252-2011 " heat resistance concrete application technology code ", the results are shown in Table
6。
The performance test results of table 6 embodiment 2 gained gradient enclosed structure heat-resistance high-strength concrete
Embodiment 3
A kind of gradient enclosed structure heat-resistance high-strength concrete, it is from inside to outside by internal layer high-strength heat-resisting concrete and outer floor height
Heat resistance concrete constitutes (sectional view is shown in Fig. 3), its ectomesoderm height heat resistance concrete area of section and internal layer high-strength heat-resisting concrete
Ratio be 1:3；The match ratio of internal layer high-strength heat-resisting concrete and outer floor height heat resistance concrete is shown in Table 7 and table 8 respectively；Performance test
The results are shown in Table 9.
Match ratio (the kg/m of internal layer high-strength heat-resisting concrete in table 7 embodiment 33)
Wherein, interior maintenance light-weight aggregate uses leca, bulk density 950kg/m3, letter Compressive Strength 3.5Mpa, before test
Full water drains away the water for 24 hours, and addition is the 1.2% of internal layer high-strength heat-resisting concrete volume；Toughened fiber uses polycrystalline not come
Mineral wool.
Match ratio (the kg/m of table 8 embodiment 3 China and foreign countries floor height heat resistance concrete3)
Wherein, interior maintenance light-weight aggregate uses lytag, bulk density 600kg/m3, letter Compressive Strength 2.0Mpa, test
Front full water drains away the water for 24 hours, and addition is the 0.8% of outer floor height heat resistance concrete volume；Doughnut uses hollow alkaline-resisting
Glass fibre.
Carry out testing concrete performance with reference to YBT 4252-2011 " heat resistance concrete application technology code ", the results are shown in Table
9。
The performance test results of table 9 embodiment 3 gained gradient enclosed structure heat-resistance high-strength concrete
Be can be seen that 600 DEG C, 800 DEG C residual strengths of outer floor height heat resistance concrete, more than 26Mpa, surpass by table 3, table 6, table 9
Crossing the 50% of standard regulation, heat resistance can reach 1000 DEG C；After 800 DEG C of high temperature of internal layer high-strength heat-resisting concrete, residue is strong simultaneously
Degree is more than 13Mpa, and heat resistance reaches 800 DEG C, is designed by gradient enclosed structure, can effective Concrete Structure heat-resisting quantity
Can so that internal layer high-strength heat-resisting concrete loss of strength rate reduces, Linear change rate reduces, and durability improves.
The foregoing is only the preferred embodiment of the present invention, it is noted that those of ordinary skill in the art is come
Saying, without departing from the concept of the premise of the invention, making some modifications and variations, these broadly fall into the protection model of the present invention
Enclose.
Claims (10)
1. a gradient building enclosure heat-resistance high-strength concrete, it is resistance to by internal layer high-strength heat-resisting concrete and outer floor height from inside to outside
Hot concrete is constituted, and wherein said internal layer high-strength heat-resisting concrete is with silicate-base cement, flyash, breeze, fluvial sand, basalt
Graded broken stone, toughened fiber, polycarboxylate water-reducer, interior maintenance light-weight aggregate and water are that raw material is prepared from, the heat-resisting coagulation of outer floor height
Soil is prepared from aluminum base cement, aloxite, aluminum stone, doughnut, polycarboxylate water-reducer, interior maintenance light-weight aggregate and water for raw material；
Outer floor height heat resistance concrete area of section is 1:(1-4 with the ratio of internal layer high-strength heat-resisting concrete).
Gradient building enclosure heat-resistance high-strength concrete the most according to claim 1, it is characterised in that described internal layer is high-strength resistance to
In hot concrete, the addition of each raw material is: silicate-base cement 160-220kg/m3, flyash 80-120kg/m3, breeze 60-
120kg/m3, fluvial sand 780-860kg/m3, basalt graded broken stone 950-1050kg/m3, toughened fiber 2-6kg/m3, polycarboxylic acids
Water reducer 3-6kg/m3, water-cement ratio controls at 0.35-0.45, and interior maintenance light-weight aggregate accounts for the 1 of internal layer high-strength heat-resisting concrete volume
～2%.
Gradient building enclosure heat-resistance high-strength concrete the most according to claim 1, it is characterised in that described outer floor height is heat-resisting
In concrete, the addition of each raw material is: aluminum base cement 350-450kg/m3, aloxite 800-950kg/m3, aluminum stone 900-1050kg/
m3, doughnut 2-6kg/m3, polycarboxylate water-reducer 3-6kg/m3, water-cement ratio controls at 0.35-0.45, and interior maintenance light-weight aggregate accounts for
The 0.5～1% of outer layer high-strength heat-resisting concrete volume.
Gradient building enclosure heat-resistance high-strength concrete the most according to claim 1, it is characterised in that described interior maintenance gently collects
Material is one or more in leca, haydites of book structure, lytag；Full water is needed to process before using 24 hours.
Gradient building enclosure heat-resistance high-strength concrete the most according to claim 1, it is characterised in that described silicate-base water
Mud is the one in portland cement, Portland cement, portland slag cement.
Gradient building enclosure heat-resistance high-strength concrete the most according to claim 1, it is characterised in that described toughened fiber is
One or more in polyethylene fibre, vinal, polypropylene fibre, steel fibre, polycrystalline mullite fibre.
Gradient building enclosure heat-resistance high-strength concrete the most according to claim 1, it is characterised in that described aluminum base cement is
One in alumina cement, fine aluminium acid salt cement.
Gradient building enclosure heat-resistance high-strength concrete the most according to claim 1, it is characterised in that described aluminum stone is 5-
16mm continuous grading, water absorption rate≤2%；Described aloxite modulus of fineness 2.0-2.5, water absorption rate≤5%.
Gradient building enclosure heat-resistance high-strength concrete the most according to claim 1, it is characterised in that described doughnut is
One or more in hollow polypropylene fibres, hollow alkali-resistant glass fibre, hollow polyester fibre.
10. the preparation method of gradient enclosed structure heat-resistance high-strength concrete described in any one of claim 1-9, it is characterised in that
Comprise the steps: 1) respectively by proportioning preparation internal layer high-strength heat-resisting concrete and outer floor height heat resistance concrete: will weigh respectively
The raw material in addition to polycarboxylate water-reducer and water add in agitated kettle and stir, be subsequently adding water and polycarboxylate water-reducer stir
Mix uniformly, prepare internal layer high-strength heat-resisting concrete and outer floor height heat resistance concrete respectively；2) internal layer high-strength temperature-resistant coagulation is first poured
Soil, treats the outer floor height heat resistance concrete of internal layer high-strength heat-resisting concrete hardened forming after-pouring, obtains described gradient enclosed structure resistance to
Hot high-strength concrete.
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| CN109160780A (en) * | 2018-08-25 | 2019-01-08 | 北京建工新型建材有限责任公司 | High-strength heat-resisting concrete |
| CN110357539A (en) * | 2019-08-01 | 2019-10-22 | 西安新意达建筑制品有限公司 | A kind of high-strength heat-resisting concrete and preparation method thereof |
| CN110550912A (en) * | 2019-09-30 | 2019-12-10 | 中国一冶集团有限公司 | High-ductility self-repairing concrete for underground structure of building |
| CN110627436A (en) * | 2019-09-24 | 2019-12-31 | 上海宝冶冶金工程有限公司 | Heat-resistant concrete |
| CN111099868A (en) * | 2019-12-11 | 2020-05-05 | 广西建工集团第五建筑工程有限责任公司 | Melting furnace heat-resistant concrete and cast-in-place construction method thereof |
| CN112209677A (en) * | 2020-09-25 | 2021-01-12 | 靖江市恒生混凝土制造有限公司 | High-temperature-resistant concrete for bearing steelmaking furnace body and preparation method thereof |
| CN112521085A (en) * | 2020-11-18 | 2021-03-19 | 嘉禾县永丰混凝土有限公司 | Fireproof heat-resistant concrete |
| CN114394805A (en) * | 2022-01-30 | 2022-04-26 | 北京科技大学 | Ferronickel slag-based heat-resistant concrete composition, ferronickel slag-based heat-resistant concrete and preparation method thereof |
| CN114989696A (en) * | 2022-05-31 | 2022-09-02 | 福建泉州旺拉利建材有限公司 | Mortar surface viscosity enhancing interface agent and use method thereof |
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| CN114394805A (en) * | 2022-01-30 | 2022-04-26 | 北京科技大学 | Ferronickel slag-based heat-resistant concrete composition, ferronickel slag-based heat-resistant concrete and preparation method thereof |
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