CN110156410A - Steel slag steel cuttings radiation shield concrete and preparation method thereof - Google Patents
Steel slag steel cuttings radiation shield concrete and preparation method thereof Download PDFInfo
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- CN110156410A CN110156410A CN201910602085.3A CN201910602085A CN110156410A CN 110156410 A CN110156410 A CN 110156410A CN 201910602085 A CN201910602085 A CN 201910602085A CN 110156410 A CN110156410 A CN 110156410A
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- steel
- steel slag
- radiation shield
- cuttings
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Classifications
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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
-
- 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
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
-
- 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
- C04B2201/30—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values
- C04B2201/32—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values for the thermal conductivity, e.g. K-factors
-
- 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
-
- 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
- C04B2201/52—High compression strength concretes, i.e. with a compression strength higher than about 55 N/mm2, e.g. reactive powder concrete [RPC]
Abstract
The present invention relates to technical field of concrete, and in particular to a kind of steel slag steel cuttings radiation shield concrete and preparation method thereof.The concrete includes the component of following parts by weight: 42.5 100 parts of class g cements, and 30-45 parts of water, 150-200 parts of steel slag, 50-80 parts of steel cuttings, 30-50 parts of bloodstone, 20-40 parts of basalt, 5-9 parts of silicon powder, 10-15 parts of miberal powder, 5-8 parts of colemanite, 10-20 parts of river sand, 1-3 parts of water-reducing agent.The defects of concrete of the application is efficiently used steel slag, while concrete density obtained is larger, has certain shielding property, and its thermal coefficient is higher, and thermal expansion coefficient is lower, and whole homogenieity is preferable, no cavity and crack.
Description
Technical field
The present invention relates to technical field of concrete, and in particular to a kind of steel slag steel cuttings radiation shield concrete and its preparation side
Method.
Background technique
Nuclear radiation is mainly tri- kinds of rays of α, β, γ: alpha ray is helion, and external exposure penetration capacity is very weak, as long as with one
Paper can block, but harm is big in suction body；β ray is electron stream, is burnt obviously after irradiating skin.Both rays are due to wearing
Saturating power is small, as long as influencing not entering apart from closer radiation source in vivo, influences not too large；Gamma-ray penetration power is very strong, is
A kind of electromagnetic wave that wavelength is very short.γ radiation is similar with X-ray, can penetrate human body and building, damage effect distance is remote.Universe, from
Right boundary can generate radioactive substance much but harm is all less big, only the radioactive material of nuclear explosion or nuclear power plant accident leakage
Matter could cause injures and deaths to personnel on a large scale.
A large amount of steel slag is produced during iron and steel smelting, brings very important environmental problem.China pair at present
The utilization of steel slag is main or relies on road engineering and melts down recycling, and the steel slag that can be efficiently used every year is less than one at big portion
Steel splitting slag is all handled and is utilized without suitable method.In order to reduce environmental pollution, a kind of suitable method is needed to come pair
Steel slag is handled.External certain countries, such as Japanese, the U.S. the utilization rate reach 90% or more.
Radiation shield concrete is also known as shielding concrete, radiation-shielding concrete.Bulk density is larger, to gamma-rays, X-ray or neutron
Radiation has screening ability, is not easy the concrete penetrated by radioactive ray.Nowadays anti-radioactive heavy concrete application is very general
Time, it can all consider to be applied to radiation shield concrete when particularly with some designs about the heavy construction of nuclear industry, besides
With high-tech development, in terms of medical treatment, using especially more about some radioactive instruments, therefore required some special build
It builds, can all widely apply anti-radioactive heavy concrete.
In radiation shield concrete, cementitious material generally uses the lower portland cement of the heat of hydration or high alumina cement, barium water
The special cements such as mud, magnesia cement.Make aggregate with barite, magnetic iron ore, limonite, scrap iron block etc..It is added and contains boron, cadmium, lithium
Deng substance, the transmitted intensity of neutron current can be weakened.It is commonly used for the substitute of the expensive anti-ray material such as lead, steel.For shielding
Cover the concrete of X-ray, gamma-rays and neutron irradiation effect.For atomic reactor, particle accelerator, and industry, agriculture
The protection of industry and the radioactive isotope equipment of scientific research department.In current radiation shield concrete, barite (BaSO4) specific gravity
4300kg/m3~4700kg/m3, property is crisp, and domestic radiation shield concrete is mostly used barite as radiation protection with gathering materials, material master
The ground such as Shaanxi, Hubei, Shandong are originated in, since the material is more crisp, the raw material obtained from various regions are multi-angular, spininess sheet, no
Conducive to pumping.And the material thermal expansion coefficient and shrinkage value are larger, to ultra-large volume, the concrete of control temperature rise are required to occur
The potential risk in crack.
As the steel slag for being also unable to fully recycle at present at home, if it contacted with radiation shield concrete
Come, is used for preparing satisfactory radiation shield concrete, the utilization rate of steel slag will be greatlyd improve.
Summary of the invention
The purpose of the present invention is to solve the lower problems of current steel slag and steel cuttings recovery utilization rate, provide one kind
Steel slag steel cuttings radiation shield concrete and preparation method thereof, the application is applied to concrete, can not only reduce using lead and
The cost of steel progress radiation protection, it is often more important that the source that a kind of recycling is had found for steel slag greatly improves steel slag
Recovery utilization rate.
In order to achieve the above object of the invention, the invention adopts the following technical scheme:
A kind of steel slag steel cuttings radiation shield concrete, the component including following parts by weight: 42.5 100 parts of class g cements, water 30-
45 parts, 150-200 parts of steel slag, 50-80 parts of steel cuttings, 30-50 parts of bloodstone, 20-40 parts of basalt, 5-9 parts of silicon powder, miberal powder 10-
15 parts, 5-8 parts of colemanite, 10-20 parts of river sand, 1-3 parts of water-reducing agent.
Preferably, the component including following parts by weight: 42.5 100 parts of class g cements, 35-45 parts of water, steel slag 150-180
Part, 70-80 parts of steel cuttings, 45-50 parts of bloodstone, 25-40 parts of basalt, 5-9 parts of silicon powder, 10-15 parts of miberal powder, colemanite 5-8
Part, 10-12 parts of river sand, 1-3 parts of water-reducing agent.
Preferably, the ratio that the size of steel slag is 0.1-1mm and two kinds of particle size ranges of 1-5mm are 3-5:1 according to weight ratio
Mixing composition.
Preferably, f-CaO is less than or equal to 2% in steel slag.
Preferably, water-reducing agent is polycarboxylate water-reducer.
Preferably, cement is 42.5 grades of ordinary portland cements.
Preferably, the specific surface area of steel cuttings is 100-150m2/kg。
Preferably, apparent density >=4000kg/m of bloodstone3, partial size 5-20mm.
Preferably, basaltic apparent density >=2500kg/m3, partial size 1-5mm.
A kind of preparation method of steel slag steel cuttings radiation shield concrete, comprising the following steps:
(1) according to set proportion, mix is carried out using blender, is fed intake in two times, first by partial size 5mm solid material below
It feeds intake, and water and water-reducing agent is added, be stirred, mixing time 30-40s；
(2) the remaining material greater than 5mm is continued to stir, mixing time 50-70, while controls total stirring
Time is 90-100s；
(3) mixture after stirring is injected into mold, radiation shield concrete is made.
Compared with prior art, the present invention beneficial effect is: steel slag being efficiently used, while concrete obtained
Density is larger, has certain shielding property, and its thermal coefficient is higher, and thermal expansion coefficient is lower, and whole homogenieity is preferable,
The defects of without cavity and crack.
Specific embodiment
Below by specific embodiment the technical scheme of the present invention will be further described explanation.
If raw material employed in the embodiment of the present invention is raw material commonly used in the art without specified otherwise, implement
Method employed in example, is the conventional method of this field.
Radiation shield concrete is different from portland cement concrete, and not only apparent density is big, contains and combines water more, and wants derivation
Hot coefficient higher (increasing local temperature minimum), is done thermal expansion coefficient low (keeping the strain generated due to temperature rise minimum)
Dry shrinking percentage is small (keeping temperature difference strain minimum), also requires concrete to have good homogenieity, is not allow for cavity, crack etc. and lacks
It falls into, there is certain structural strength and fire resistance.Therefore, for these requirements, this application provides a kind of anti-spokes of steel slag steel cuttings
Concrete is penetrated, the component including following parts by weight:
42.5 100 parts of class g cements, cement are 42.5 grades of ordinary portland cements；The cement quality is stable, intensity is high, dosage
Less, contraction is small reduces the heat of hydration, prevents from cracking；
30-45 parts of water；
150-200 parts of steel slag, the size of steel slag is 0.1-1mm and two kinds of particle size ranges of 1-5mm according to weight ratio are 3-5:1
Ratio mix composition, also, in steel slag f-CaO be less than or equal to 2%；
50-80 parts of steel cuttings, the specific surface area of steel cuttings is 100-150m2/kg；
30-50 parts of bloodstone, apparent density >=4000kg/m of bloodstone3, partial size 5-20mm；
20-40 parts of basalt, basaltic apparent density >=2500kg/m3, partial size 1-5mm；
5-9 parts of silicon powder, select S95 silicon powder；
10-15 parts of miberal powder, select S95 miberal powder；
5-8 parts of colemanite, 10-20 parts of river sand, 1-3 parts of water-reducing agents of water-reducing agent are polycarboxylate water-reducer.
Since concrete needs to pump, and need to control the heat of hydration, therefore simultaneous selection miberal powder cooperation silicon powder and hard
Bechilite, the above-mentioned reasonable collocation of simultaneous selection select reasonable collocation that can not only reduce water consumption by above-mentioned collocation,
Large volume internal temperature can be also reduced, to prevent contraction fissure caused by temperature gradient.Certainly, in order to improve concrete density, subtract
Lack water consumption and meet pumping requirements, selected efficient water-reducing agent, concrete coagulating time can be extended in this way, adjusts coagulation
The native heat of hydration.
The preparation method of above-mentioned steel slag steel cuttings radiation shield concrete, comprising the following steps:
(1) according to set proportion, mix is carried out using blender, is fed intake in two times, first by partial size 5mm solid material below
It feeds intake, and water and water-reducing agent is added, be stirred, mixing time 30-40s；
(2) the remaining material greater than 5mm is continued to stir, mixing time 50-70, while controls total stirring
Time is 90-100s；
(3) mixture after stirring is injected into mold, radiation shield concrete is made.
Different feeding modes has a certain impact to concrete workability and intensity tool, and therefore, the application is using secondary
It feeds intake, avoids moisture to a certain extent to the concentration of coarse aggregate and cement mortar interface, workability is preferable, while concrete
Interface transition layer structure after hardening is finer and close, and caking property is reinforced, so that concrete strength be made to improve.
Meanwhile mixing time and the performance of blender, loaded volume, feeding mode and additive have and closely contact,
In order to avoid the cohesiveness of concrete increases, slump-loss increase influences construction, and therefore, the application controls mixing time
Within 100s, and it is advisable with 90-100s.
Embodiment 1:
A kind of steel slag steel cuttings radiation shield concrete, the component including following parts by weight:
42.5 100 parts of class g cements, cement are 42.5 grades of ordinary portland cements；
30 parts of water；
200 parts of steel slag, the ratio that the size of steel slag is 0.1-1mm and two kinds of particle size ranges of 1-5mm are 3:1 according to weight ratio
Mixing composition, also, f-CaO is less than or equal to 2% in steel slag；
80 parts of steel cuttings, the specific surface area of steel cuttings is 100-150m2/kg；
30 parts of bloodstone, apparent density >=4000kg/m of bloodstone3, partial size 5-20mm；
40 parts of basalt, basaltic apparent density >=2500kg/m3, partial size 1-5mm；
5 parts of silicon powder, select S95 silicon powder；
15 parts of miberal powder, select S95 miberal powder；
5 parts of colemanite, 20 parts of river sand, 1 part of water-reducing agent of water-reducing agent is polycarboxylate water-reducer.
The preparation method of above-mentioned steel slag steel cuttings radiation shield concrete, comprising the following steps:
(1) according to set proportion, mix is carried out using blender, is fed intake in two times, first by partial size 5mm solid material below
It feeds intake, and water and water-reducing agent is added, be stirred, mixing time 40s；
(2) when the remaining material greater than 5mm being continued to stir, mixing time 50s, while controlling total stirring
Between be 90-100s；
(3) mixture after stirring is injected into mold, radiation shield concrete is made.
Embodiment 2:
A kind of steel slag steel cuttings radiation shield concrete, the component including following parts by weight:
42.5 100 parts of class g cements, cement are 42.5 grades of ordinary portland cements；
45 parts of water；
150 parts of steel slag, the ratio that the size of steel slag is 0.1-1mm and two kinds of particle size ranges of 1-5mm are 5:1 according to weight ratio
Mixing composition, also, f-CaO is less than or equal to 2% in steel slag；
50 parts of steel cuttings, the specific surface area of steel cuttings is 100-150m2/kg；
50 parts of bloodstone, apparent density >=4000kg/m of bloodstone3, partial size 5-20mm；
20 parts of basalt, basaltic apparent density >=2500kg/m3, partial size 1-5mm；
9 parts of silicon powder, select S95 silicon powder；
10 parts of miberal powder, select S95 miberal powder；
8 parts of colemanite, 10 parts of river sand, 3 parts of water-reducing agents of water-reducing agent are polycarboxylate water-reducer.
The preparation method of above-mentioned steel slag steel cuttings radiation shield concrete, comprising the following steps:
(1) according to set proportion, mix is carried out using blender, is fed intake in two times, first by partial size 5mm solid material below
It feeds intake, and water and water-reducing agent is added, be stirred, mixing time 30s；
(2) when the remaining material greater than 5mm being continued to stir, mixing time 70s, while controlling total stirring
Between be 100s；
(3) mixture after stirring is injected into mold, radiation shield concrete is made.
Embodiment 3:
A kind of steel slag steel cuttings radiation shield concrete, the component including following parts by weight:
42.5 100 parts of class g cements, cement are 42.5 grades of ordinary portland cements；
35 parts of water；
180 parts of steel slag, the ratio that the size of steel slag is 0.1-1mm and two kinds of particle size ranges of 1-5mm are 3-5:1 according to weight ratio
Example mixing composition, also, f-CaO is less than or equal to 2% in steel slag；
70 parts of steel cuttings, the specific surface area of steel cuttings is 100-150m2/kg；
45 parts of bloodstone, apparent density >=4000kg/m of bloodstone3, partial size 5-20mm；
25 parts of basalt, basaltic apparent density >=2500kg/m3, partial size 1-5mm；
8 parts of silicon powder, select S95 silicon powder；
12 parts of miberal powder, select S95 miberal powder；
6 parts of colemanite, 12 parts of river sand, 3 parts of water-reducing agents of water-reducing agent are polycarboxylate water-reducer.
The preparation method of above-mentioned steel slag steel cuttings radiation shield concrete, comprising the following steps:
(1) according to set proportion, mix is carried out using blender, is fed intake in two times, first by partial size 5mm solid material below
It feeds intake, and water and water-reducing agent is added, be stirred, mixing time 35s；
(2) when the remaining material greater than 5mm being continued to stir, mixing time 60, while controlling total stirring
Between be 95s；
(3) mixture after stirring is injected into mold, radiation shield concrete is made.
The properties of product of above-described embodiment see the table below.
It is shown by above-mentioned performance data, the radiation shield concrete of the application, not only apparent density is big, and thermally conductive system
Number is higher, and thermal coefficient is much higher than the 1.7w/m.k of conventional concrete；Meanwhile thermal expansion coefficient is low, respectively less than 10 × 10-6/℃；
It is observed as the product to made from, it was found that, the product of the application has good homogenieity, without cavity
And the defects of crack.
The above is only a better embodiment of the present invention and the applied technical principle.It will be appreciated by those skilled in the art that this hair
It is bright to be not limited to specific embodiment described here, be able to carry out for a person skilled in the art it is various it is apparent variation, again
Adjustment and substitution are without departing from protection scope of the present invention.Therefore, although by above embodiments to the present invention carried out compared with
For detailed description, but the present invention is not limited to the above embodiments only, without departing from the inventive concept, can be with
Including more other equivalent embodiments, and the scope of the invention is determined by the scope of the appended claims.
Claims (10)
1. a kind of steel slag steel cuttings radiation shield concrete, which is characterized in that the component including following parts by weight: 42.5 class g cements
100 parts, 30-45 parts of water, 150-200 parts of steel slag, 50-80 parts of steel cuttings, 30-50 parts of bloodstone, 20-40 parts of basalt, silicon powder 5-9
Part, 10-15 parts of miberal powder, 5-8 parts of colemanite, 10-20 parts of river sand, 1-3 parts of water-reducing agent.
2. steel slag steel cuttings radiation shield concrete according to claim 1, which is characterized in that the group including following parts by weight
Point: 42.5 100 parts of class g cements, 35-45 parts of water, 150-180 parts of steel slag, 70-80 parts of steel cuttings, 45-50 parts of bloodstone, basalt
25-40 parts, 5-9 parts of silicon powder, 10-15 parts of miberal powder, 5-8 parts of colemanite, 10-12 parts of river sand, 1-3 parts of water-reducing agent.
3. steel slag steel cuttings radiation shield concrete according to claim 1, which is characterized in that the size of steel slag is 0.1-1mm
Composition is mixed according to the ratio that weight ratio is 3-5:1 with two kinds of particle size ranges of 1-5mm.
4. steel slag steel cuttings radiation shield concrete according to claim 1, which is characterized in that f-CaO is less than or equal in steel slag
2%.
5. steel slag steel cuttings radiation shield concrete according to claim 1, which is characterized in that water-reducing agent is polycarboxylic acids diminishing
Agent.
6. steel slag steel cuttings radiation shield concrete according to claim 1, which is characterized in that cement is 42.5 grades of common silicic acid
Salt cement.
7. steel slag steel cuttings radiation shield concrete according to claim 1, which is characterized in that the specific surface area of steel cuttings is 100-
150m2/kg。
8. steel slag steel cuttings radiation shield concrete according to claim 1, which is characterized in that the apparent density of bloodstone >=
4000kg/m3, partial size 5-20mm.
9. steel slag steel cuttings radiation shield concrete according to claim 1, which is characterized in that basaltic apparent density >=
2500kg/m3, partial size 1-5mm.
10. a kind of preparation method of the steel slag steel cuttings radiation shield concrete as described in above-mentioned any claim, which is characterized in that
The following steps are included:
(1) according to set proportion, mix is carried out using blender, is fed intake in two times, first throw partial size 5mm solid material below
Material, and water and water-reducing agent is added, it is stirred, mixing time 30-40s；
(2) when the remaining material greater than 5mm being continued to stir, mixing time 50-70s, while controlling total stirring
Between be 90-100s；
(3) mixture after stirring is injected into mold, radiation shield concrete is made.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112250386A (en) * | 2020-10-26 | 2021-01-22 | 华北水利水电大学 | Radiation-proof ultrahigh-performance concrete and preparation method thereof |
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|---|---|---|---|---|
| CN102219459A (en) * | 2011-04-02 | 2011-10-19 | 武汉理工大学 | Radiation shield concrete and preparation method thereof |
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2019
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102219459A (en) * | 2011-04-02 | 2011-10-19 | 武汉理工大学 | Radiation shield concrete and preparation method thereof |
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| CN112250386A (en) * | 2020-10-26 | 2021-01-22 | 华北水利水电大学 | Radiation-proof ultrahigh-performance concrete and preparation method thereof |
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