CN105884227B - A kind of concrete for X ray room - Google Patents

A kind of concrete for X ray room Download PDF

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Publication number
CN105884227B
CN105884227B CN201410541133.XA CN201410541133A CN105884227B CN 105884227 B CN105884227 B CN 105884227B CN 201410541133 A CN201410541133 A CN 201410541133A CN 105884227 B CN105884227 B CN 105884227B
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aggregate
fine aggregate
concrete
silica
cement
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CN201410541133.XA
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Chinese (zh)
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CN105884227A (en
Inventor
朱奎
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Jianguo Concrete Group Co ltd
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Individual
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Priority to CN201410541133.XA priority Critical patent/CN105884227B/en
Priority to CN201710616567.5A priority patent/CN107382194B/en
Priority to CN201710615938.8A priority patent/CN107327144B/en
Publication of CN105884227A publication Critical patent/CN105884227A/en
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Publication of CN105884227B publication Critical patent/CN105884227B/en
Expired - Fee Related legal-status Critical Current
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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B1/00—Producing shaped prefabricated articles from the material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
    • B28B13/02—Feeding the unshaped material to moulds or apparatus for producing shaped articles
    • 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
    • C04B2111/00034—Physico-chemical characteristics of the mixtures
    • C04B2111/00198—Characterisation or quantities of the compositions or their ingredients expressed as mathematical formulae or equations
    • 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
    • C04B2111/00241—Physical properties of the materials not provided for elsewhere in C04B2111/00
    • C04B2111/00258—Electromagnetic wave absorbing or shielding materials
    • 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
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00862—Uses not provided for elsewhere in C04B2111/00 for nuclear applications, e.g. ray-absorbing concrete
    • 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
    • C04B2111/70—Grouts, e.g. injection mixtures for cables for prestressed concrete
    • 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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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical 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)
  • Treatment Of Sludge (AREA)

Abstract

The invention discloses a kind of concrete for X ray room, it is characterized in that aggregate is using as follows：Coarse aggregate uses aluminium scrap alumina, and particle diameter is 5~40mm；Fine aggregate uses CHARACTERISTICS OF TAILINGS SAND and silica compound, and silica is the 5% of fine aggregate mixture weight ratio, and CHARACTERISTICS OF TAILINGS SAND and silica the stone size are 0.15~2mm；Plasticiser weight is the 2% of cement consumption；Construction procedure is using following：(1) preparation raw material；(2) assembling, the installation of template are in place；(3) pre-fill coarse aggregate, while pre-buried pressure grouting pipe；(4) fine aggregate and fine aggregate perfusion are stirred；(5) surface treatment poured into after fine aggregate.The made concrete of the present invention has the characteristics of good X-ray radiation protection performance, environmental protection and economy.

Description

A kind of concrete for X ray room
Technical field
The present invention relates to building material field, more particularly to a kind of concrete for X ray room.
Background technology
X ray is a kind of high-energy, high-frequency electromagnetic wave, and its penetration capacity is very strong, and the decay of ray mainly passes through The elastic collision of electronics.When these rays, its ability can be weakened when by certain high density construction material, and worked as and used certain When the concrete that kind construction material is prepared has certain density and thickness, ray can be absorbed completely.Therefore penetrated to take precautions against Line, to increase the heap density of concrete, but how heavy aggregate determines one because its particle shape and institutional framework easily isolate Individual good grading is the problem that is faced in engineering to prevent that concrete from producing isolation.Further, since appoint caused by aggregate deficiency What hole can all make the reduction of coagulation mound density, so as to weaken the ability for absorbing X ray.How in terms of raw material proportioning and construction Construction workability necessary to meeting X ray room concrete and isolation needs are the emphasis of the present invention.
The content of the invention
For the deficiencies in the prior art, it is an object of the invention to provide a kind of concrete for X ray room.
Aggregate of the present invention is using as follows：Coarse aggregate uses aluminium scrap alumina, and particle diameter is 5~40mm；Fine aggregate uses CHARACTERISTICS OF TAILINGS SAND and silica compound, silica are the 5% of fine aggregate mixture weight ratio, and CHARACTERISTICS OF TAILINGS SAND and silica the stone size are 0.15~2mm.
It is especially effective for protection X ray to carry out concrete batching through this metal aggregate of overtesting aluminium scrap alumina.Useless mine tailing Sand primary raw material is silica and aluminum oxide, is also to have good environmental benefit using it as the raw material of X ray room concrete And economic benefit.Oxygen atom helps to control X ray particle in CHARACTERISTICS OF TAILINGS SAND, is helped using the silica aggregate containing a large amount of oxygen atoms In preventing from radiating.
To improve the workability of concrete, water consumption is reduced, mixes sulfite pulp or reed pulp waste liquid as plasticiser, Plasticiser weight is the 2% of cement consumption.
Match ratio step is defined below：
(1) ratio of mud S is determined
The intensity of concrete is similarly depending on the intensity of cement, ratio of mud size, coarse aggregate species and concrete tamping Degree etc..According to result of the test, the ratio of mud is determined using following formula：
S=1/ (f/ (0.55fc)+0.5)
S is the ratio of mud, and f is 28 days intensity of concrete, fcFor 28 days intensity of cement.
(2) water consumption W is determined
The concrete in X ray room not only has in addition to intensity necessary to normal concrete to be met and construction workability There is the heap density required for absorption X ray, and should meet to combine water necessary to weakening neutron current.
During concrete casting, sink because coarse aggregate specific density is larger, the upper and lower layer composition of concrete is differed greatly. In order to avoid producing laminated segregation phenomenon and combining the needs of water, for lazy flow concrete, the slump uses 1~3cm, uses Water uses 225~235kg/m3；For dry concrete, Wei Bodu uses 20s~40s, water consumption using 220~ 240kg/m3。
(3) cement consumption C is determined
S is the ratio of mud, and W is water consumption.
Cement uses portland cement, and intensity uses the portland cement of more than 425 or No. 425.By contrast test, its He absorbs X ray ability by cement.
(4) aggregate dosage is determined
In order to effectively prevent from radiating, concrete is tested, according to result of the test, heap density p using 3000~ 3500kg/m3, aggregate weight is defined below：
Gb=β (ρ-W-C)
G in formulaaFor coarse aggregate aluminium scrap alumina weight,For coarse aggregate distribution coefficient,For 0.6~0.62；GbFor fine aggregate Weight, fine aggregate are mill tailings and silica mixture, and β is fine aggregate distribution coefficient, and β is 0.38~0.4；ρ is heap density；W For water consumption；C is cement consumption.
In order to prevent concrete from aggregate sinking occur pouring, aggregate skewness and influence X-ray-preventing effect, use Following construction procedure：
(1) preparation raw material；
(2) assembling, the installation of template are in place；
(3) pre-fill coarse aggregate, while pre-buried pressure grouting pipe；
(4) fine aggregate and fine aggregate perfusion are stirred；
(5) surface treatment poured into after fine aggregate.
Fine aggregate mixer, mixing speed is bigger, and whipping performance is better, uses 400L mixers.After fine aggregate is stirred, Stirred in container with the mixer of low mixing speed.
Fine aggregate perfusion should be carried out continuously, in order to supply fine aggregate to pump incessantly, when quantities is big, Also more mixer joints can be used for slurry.
Grout pipe line can use common steel tube, polyvinyl chloride pipe, pressure-resistant rubber hose etc., should set annulus line, provisioned systems, give up Abandon system, flushometer etc..Effective common steel tube is poured into, beveled tip is whittled into termination, internal diameter pours into speed corresponding to fine aggregate and is 19~65mm.Measure fine aggregate pours into the mark ceremony of position with the tubule that internal diameter is Φ 50mm, and many longitudinal directions are provided with pipe What otch was made, the mouth of pipe places buoy and pours into height to determine fine aggregate.
In order to prevent concrete disintegration and ensure the workability of concrete, using following technical measures：
(1) template will use the stiff materials that can bear injection pressure, it is ensured that indeformable, form joint during perfusion fine aggregate And there is measure to ensure not spillage during mud jacking between template and basis.
(2) fill out the coarse aggregate communications centre put and wash down clean, to suction moisture in advance before fine aggregate is poured into.
(3) before fine aggregate is unimplanted, the fine aggregate stirred to be continued ceaselessly to stir, to prevent precipitation from isolating.
(4) fine aggregate pours into slowly is carried out upwards since foot.
The intensity of prepacked aggregate concrete, concrete surface layer is more much lower than bottom intensity, therefore should effectively carry out Surface treatment, takes following measure：
(1) the amount ratio match ratio of the fine aggregate in the range of the 15cm of top improves 8%~10%；
(2) when excreting water phenomenon is basically completed after 2~3h of perfusion fine aggregate, from the thin bone of Reperfu- sion at concrete surface depth 50cm Material, makes the fine aggregate slime flux on surface be replaced by new fine aggregate；
(3) component surface is vibrated flat board jolt ramming using vacuum.
Surface treatment can also take following measure：
(1) the match ratio dosage of the fine aggregate in the range of the 15cm of top improves 8%~10%；
(2) when excreting water phenomenon is basically completed after 2~3h of perfusion fine aggregate, from the thin bone of Reperfu- sion at concrete surface depth 50cm Material, makes the fine aggregate slime flux on surface be replaced by new fine aggregate；
(3) template of breathing freely is using angle steel as skeleton, and wire netting is hung on angle steel, then using filter cloth as substrate, ventilative template is covered Lid pushes down the surface of grouted-aggregate concrete, and aggregate floats when preventing from irrigating fine aggregate, while can be by thin bone with the expansion of fine aggregate Moisture extrusion in material.
The present invention has the characteristics of good X-ray radiation protection performance, environmental protection and economy.
Embodiment
Embodiment
Aggregate is using as follows：Coarse aggregate uses aluminium scrap alumina, and aluminium scrap alumina dosage is 1860kg, and particle diameter is 5~ 40mm；Fine aggregate uses CHARACTERISTICS OF TAILINGS SAND and silica compound, dosage 1083kg, and silica is fine aggregate mixture weight ratio 57kg, CHARACTERISTICS OF TAILINGS SAND and silica the stone size are 0.15~2mm, water consumption 230kg, cement consumption 392kg, and plasticiser is sub- Sulfate pulp weight is 7.84kg, and the slump uses 3cm.
Using following construction procedure：
(1) preparation raw material；
(2) assembling, the installation of template are in place；
(3) pre-fill coarse aggregate, while pre-buried pressure grouting pipe；
(4) fine aggregate and fine aggregate perfusion are stirred；
(5) surface treatment poured into after fine aggregate.
Fine aggregate mixer, mixing speed is bigger, and whipping performance is better, uses 400L mixers.After fine aggregate is stirred, Stirred in container with the mixer of low mixing speed.
Concrete construction uses following technical measures：
(1) template will use the stiff materials that can bear injection pressure, it is ensured that indeformable, form joint during perfusion fine aggregate And there is measure to ensure not spillage during mud jacking between template and basis.
(2) fill out the coarse aggregate communications centre put and wash down clean, to suction moisture in advance before fine aggregate is poured into.
(3) before fine aggregate is unimplanted, the fine aggregate stirred to be continued ceaselessly to stir, to prevent precipitation from isolating.
(4) fine aggregate pours into slowly is carried out upwards since foot.
Concrete surface processing can also take following measure：
(1) the amount ratio match ratio of the fine aggregate in the range of the 15cm of top improves 8%~10%；
(2) when excreting water phenomenon is basically completed after 2~3h of perfusion fine aggregate, from the thin bone of Reperfu- sion at concrete surface depth 50cm Material, makes the fine aggregate slime flux on surface be replaced by new fine aggregate；
(3) template of breathing freely is using angle steel as skeleton, and wire netting is hung on angle steel, then using filter cloth as substrate, ventilative template is covered Lid pushes down the surface of grouted-aggregate concrete, and aggregate floats when preventing from irrigating fine aggregate, while can be by thin bone with the expansion of fine aggregate Moisture extrusion in material.

Claims (1)

  1. A kind of 1. concrete for X ray room, it is characterized in that aggregate is using as follows：Coarse aggregate uses aluminium scrap alumina, Particle diameter is 5 ~ 40mm；Fine aggregate uses CHARACTERISTICS OF TAILINGS SAND and silica compound, and silica is the 5% of fine aggregate mixture weight ratio, mine tailing Sand and silica the stone size are 0.15 ~ 2mm；Plasticiser weight is the 2% of cement consumption；
    Match ratio step is defined below：
    （1）Determine ratio of mud S
    The ratio of mud is determined using following formula：
    S=1/(f/(0.55fc)+0.5)
    S is the ratio of mud, and f is 28 days intensity of concrete, fcFor 28 days intensity of cement；
    （2）Determine water consumption W
    For lazy flow concrete, the slump uses 1 ~ 3cm, and water consumption uses 225 ~ 235kg/m3；For dry coagulation Soil, Wei Bodu use 20s ~ 40s, and water consumption uses 220 ~ 240kg/m3；
    （3）Determine cement consumption C
    S is the ratio of mud, and W is water consumption；
    Cement uses portland cement, and intensity uses the portland cement of more than 425 or No. 425；
    （4）Determine aggregate dosage
    Heap density p uses 3000 ~ 3500kg/m3, aggregate weight is defined below：
    Gb=β (ρ-W-C)
    In formulaFor coarse aggregate aluminium scrap alumina weight,For coarse aggregate distribution coefficient,For 0.6 ~ 0.62；GbFor fine aggregate weight Amount, fine aggregate are mill tailings and silica mixture, and β is fine aggregate distribution coefficient, and β is 0.38 ~ 0.4；ρ is heap density；W is Water consumption；C is cement consumption.
CN201410541133.XA 2014-09-27 2014-09-27 A kind of concrete for X ray room Expired - Fee Related CN105884227B (en)

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Application Number Priority Date Filing Date Title
CN201410541133.XA CN105884227B (en) 2014-09-27 2014-09-27 A kind of concrete for X ray room
CN201710616567.5A CN107382194B (en) 2014-09-27 2014-09-27 Preparation method of anti-ray concrete
CN201710615938.8A CN107327144B (en) 2014-09-27 2014-09-27 The construction method of radiation-shielding concrete

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Application Number Priority Date Filing Date Title
CN201410541133.XA CN105884227B (en) 2014-09-27 2014-09-27 A kind of concrete for X ray room

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CN201710615938.8A Division CN107327144B (en) 2014-09-27 2014-09-27 The construction method of radiation-shielding concrete
CN201710616567.5A Division CN107382194B (en) 2014-09-27 2014-09-27 Preparation method of anti-ray concrete

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Publication number Priority date Publication date Assignee Title
CN115611575A (en) * 2022-10-08 2023-01-17 中建三局集团有限公司 Modified cement-based grouting material with X-ray absorption capacity and preparation method thereof

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CN107382194A (en) 2017-11-24
CN107327144A (en) 2017-11-07
CN105884227A (en) 2016-08-24
CN107382194B (en) 2019-12-27
CN107327144B (en) 2019-03-08

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