CN108484057A - A kind of large volume cracking resistance radiation shield concrete and preparation method thereof based on scrap glass - Google Patents
A kind of large volume cracking resistance radiation shield concrete and preparation method thereof based on scrap glass Download PDFInfo
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- CN108484057A CN108484057A CN201810555506.7A CN201810555506A CN108484057A CN 108484057 A CN108484057 A CN 108484057A CN 201810555506 A CN201810555506 A CN 201810555506A CN 108484057 A CN108484057 A CN 108484057A
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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
- C04B2111/00241—Physical properties of the materials not provided for elsewhere in C04B2111/00
- C04B2111/00258—Electromagnetic wave absorbing or shielding materials
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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
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
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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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
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- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
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- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a kind of large volume cracking resistance radiation shield concrete based on scrap glass, each component and its content include：140 160kg/m of water3；100 300kg/m of cement3；30 100kg/m of glass powder3；50 180kg/m of flyash3；800 1100kg/m of fine aggregate3；1400 2000kg/m of coarse aggregate3；0.35 1.9kg/m of composite modifier3；2.1 7.8kg/m of water-reducing agent3, 0.6 1.2kg/m of fiber3；Wherein coarse aggregate is mixed by barite and lead glass, and fine aggregate is mixed by pyrex sand and barite sand.Gained large volume cracking resistance radiation shield concrete has excellent working performance, mechanical property, cracking resistance, endurance quality and shield effectiveness；And can the scrap glasses such as the leaded, boracic of high-efficiency resource recycling, there is significant economy and environmental benefit.
Description
Technical field
The invention belongs to building engineering fields, and in particular to a kind of large volume cracking resistance radiation protection coagulation based on scrap glass
Soil and preparation method thereof.
Background technology
Cullet is the important component of urban solid garbage, in China cullet account for solid refuse total amount about 6~
11%.Industrial cullet can be used for the reproduction of glass, but when daily cullet is due to reproduction can influence product quality
And it is handled in a manner of landfill mostly.The proportion containing lead oxides is more than 20% in CRT glass.Filling leaded substance can be to soil
It is polluted with water source.And heat-resisting cooker, electric-vacuum glass, optical glass cullet are borosilicate glasses, are also badly in need of high attached
Value added utilization.But cullet cannot be decomposed by the microorganisms, landfill disposal mode not only pollutes ring since its chemical property is stablized
Border but also to occupy a large amount of land resource.
In addition, in the design of radiation protection mass concrete, the apparent density of concrete on the one hand need to be improved, on the other hand
Incorporation " neutron-absorbing material " is needed, while improving the density of concrete, Crack Control Design is carried out, improves its anti-spoke function.Only choose
The larger natural crystal of apparent density such as barite to ultra-large volume, requires control Wen Sheng's as the coarse-fine aggregate of concrete
There is the potential risk for crack occur for concrete, exists simultaneously the problems such as shielding gamma-rays is ineffective, the prior art has
Using lead glass as mass concrete aggregate, but this there are the risks of alkali-aggregate reaction, this makes mass concrete, and there are resistance to
The undesirable risk of long property.Therefore, further research has good low hydration heat ＆ low shrinkage deformation, homogeneity, excellent durability, shielding properties excellent
The large volume radiation-proof concrete of the advantages that different has important research and application value.
The recycling of domestic cullet is started late, and exploitation cullet high added value recycles new way that can greatly promote
Into the utilization of cullet, good environmental benefit, Social benefit and economic benefit are obtained, realizes low-carbon production.Meanwhile radiation protection
Large volume anti-crack concrete needs supershielded aggregate and admixture to realize that low hydration heat ＆ low shrinkage deformation, radiation protection, cracking resistance, height are durable
Excellent performance.
Invention content
It is an object of the invention in view of the deficienciess of the prior art, a kind of large volume based on scrap glass of offer is anti-
Split radiation shield concrete, it can be achieved that a variety of cullet efficient utilization, and it is good, resistance to can express out low hydration heat ＆ low shrinkage deformation, homogeneity
The advantages that property is excellent, shielding properties is excellent long.
To achieve the above object, the technical solution adopted by the present invention is：
A kind of large volume cracking resistance radiation shield concrete based on scrap glass, it is by water, cementitious material, fine aggregate, rough set
Material, composite modifier, water-reducing agent and fiber composition, cementitious material includes cement and mineral admixture, and coarse aggregate includes barite
And lead glass, fine aggregate include pyrex sand and barite sand, mineral admixture includes glass powder and flyash；Water 140-
160kg/m3；Cement 100-300kg/m3；Glass powder 30-100kg/m3；Flyash 50-180kg/m3；Fine aggregate 800-
1100kg/m3；Coarse aggregate 1400-2000kg/m3；Composite modifier 0.35-1.9kg/m3；Water-reducing agent 2.1-7.8kg/m3, fiber
0.6-1.2kg/m3。
The fineness modulus of the fine aggregate is 2.3-3.2, the mass ratio of pyrex sand and barite sand in fine aggregate
It is 1:(1.0~5.0), the wherein apparent density of barite sand are 3800~4200kg/m3, blanc fixe content is less than 8wt%.
Pyrex sand is made of optical glass waste, and boron content is more than 10wt%.
The mass ratio of barite and lead glass aggregate is 1 in the coarse aggregate:(1.0~3.0) are the continuous grades of 5~31.5m
Match；Wherein the apparent density of barite is 3900~4400kg/m3, barium sulfate content is more than 85wt%；Lead glass aggregate is by CRT
Glass waste is made, and apparent density is more than 2800kg/m3, lead content is more than 20wt%.
Preferably, the mass ratio of the glass powder and flyash is 1:(1.0~4.0)；Glass powder and flyash constitute mine
Polymer blends material.
In said program, the grain size of the glass powder is 30 μm or less；SiO in glass powder2Mass fraction be more than
70wt%.
In said program, the cement is low-heat portland cement or Portland cement.
In said program, the water-reducing agent is polycarboxylic acid series high efficiency water reducing agent.
In said program, the fiber can be selected polypropylene fibre, diameter≤30 μm, length≤50mm, and fracture strength >=
200MPa。
In said program, the composite modifier presses 1 by methyl cellulose ether, lithium carbonate, gypsum, white lime:(0.5~
0.8):(2~5):The mass ratio of (2~5) mixes and (mixes 3~5min etc. using dry-powder mixer).
A kind of preparation method of above-mentioned large volume cracking resistance radiation shield concrete, it includes the following steps：
1) each raw material is weighed in proportion, and each component and its content include：Water 140-160kg/m3；Cement 100-300kg/m3；
Glass powder 30-100kg/m3；Flyash 50-180kg/m3；Fine aggregate 800-1100kg/m3；Coarse aggregate 1400-2000kg/m3；
Composite modifier 0.35-1.9kg/m3；Water-reducing agent 2.1-7.8kg/m3, fiber 0.6-1.2kg/m3；
2) it by the cement weighed, glass powder, flyash, fine aggregate, coarse aggregate, composite modifier and fiber, mixes uniform,
Material must be premixed；
3) water-reducing agent, fiber and water are added in the ratio in the premix material that step 4) obtains, stir 120s or more,
Until material mixes the full and uniform large volume cracking resistance radiation shield concrete to get described based on cullet.
The principle of the present invention is：
1) it is directed to the problem of Cracking of large volume radiation-proof concrete, using the glass powder and flyash of large dosage, glass powder
Early activity is low, can go out the cementitious material of formulating low-temperature liter, while tiny glass powder can be uniformly dispersed in cementitious material hole
In, it is difficult to increase the migration of moisture in dry conditions in concrete for the gel-filled holes of C-S-H that pozzolanic reaction generates
Degree improves concrete density, reduces the shrinking percentage of concrete, accordingly compensate for drying shrinkage；As scrap glass powder volume increases
Add, pozzolanic reaction generates the gel-filled hole rates of C-S-H and accelerates, and moisture moves difficulty and increases, and concrete contraction percentage reduces；
Using closestpacking design method, the compactness and homogeneity of concrete can be effectively promoted, reduces the aquation Wen Sheng of concrete
With self-constriction problem, polypropylene fiber components are increased, resistance is played and splits toughening, wear-resistant impervious effect, realize concrete anticracking
And shielding property, realize the utilization of glass waste high added value；
2) large volume radiation-proof concrete is directed to since heavy aggregate settles easy laminated segregation problem, using ratio optimization group
It closes, the principles such as interference of gathering materials, the mixture proportion and grading requirement that both optimization barite, lead glass gather materials make weight gather materials
It collides in cement slurry, is allowed to form the effective interference effect that gathers materials, inhibits barite fall rate, reduce layering, increase
Add the homogeneity of concrete；Optimize powder in cementitious material simultaneously to form, introduces flyash, glass powder is mixed as admixture
Add cellulose ether, the viscosity to increase concrete in a certain range forms gel and improves slurry viscosity cement's slurry, introduces micro-
Cross-linked structure forms gel, increases the cohesiveness of slurry；
3) large volume radiation-proof concrete is directed to since glass aggregate causes alkali-aggregate reaction problem and durability is bad asks
Topic, by optimization design match ratio problem, is accompanied by high-content fly ash, composite modifier and utmostly reduces alkali bone in concrete
Expect the potential threat of reaction；By active constituent in alkali-activated carbonatite, sulphate activation gelling system, the early stage for improving concrete is strong
Degree, is further ensured that the shielding property and endurance quality of concrete；
4) enhance large volume radiation-proof concrete shield effectiveness, the present invention utilizes the thickness and concrete of mass concrete
Compactness increases shield effectiveness, while introducing highdensity barite, the lead glass containing Pb, the pyrex containing B, effectively
X-ray, gamma-rays and neutron current are shielded, the synthesis radiation proof function of concrete is enhanced.
Compared with prior art, beneficial effects of the present invention are：
1) the large volume cracking resistance radiation shield concrete provided by the present invention based on scrap glass has excellent workability
Energy, mechanical property, cracking resistance, endurance quality and shield effectiveness.
2) reasonable employment scrap glass as concrete thick, fine aggregate and admixture, appropriate process flow is provided, is efficiently provided
Sourceization waits scrap glasses using leaded, has significant economy and environmental benefit.
Description of the drawings
Fig. 1 is the large volume cracking resistance radiation shield concrete preparation flow figure based on scrap glass.
Specific implementation mode
For a better understanding of the present invention, with reference to the embodiment content that the present invention is furture elucidated, but the present invention
Content is not limited solely to the following examples.
In following embodiment, the preparation method of the lead glass aggregate of use, pyrex sand and glass powder includes as follows
Step：Scrap glass is entered into manual sorting's removal of impurities process, CRT glass, optical glass, the simple glass in cullet are carried out
Sorting, is then respectively delivered in distributing device hopper, is picked the metal impurities in discarded glass with the deironing apparatus in distributing device
It removes, by the cone glass and neck glass in the CRT glass sub-elected, thin broken, screening is carried out, by discarded glass cloth respective defeated
It send on device, broken rear frit is subjected to regrading with screening plant, and screen out the impurity of lightweight, then sieve classification,
It is made as the aggregate of 5-20mm, the fine powder that wherein CRT glass, optical glass screen out is attributed to simple glass fine powder, other are broken
Big glass, medium glass are directly entered broken, classification procedure；Panel glass in CRT glass also can be used as simple glass；It will sorting
The optical glass thin broken gone out is chosen, and then sieve classification, the glass that frit grades at different levels are finally made into sand grading in IIth area are thin
Aggregate；The glass fine powder separate compiling that the simple glass sub-elected and other techniques are collected is less than or equal to 30 μm of glass at grain size
Micro mist；
The apparent density of above-mentioned steps recycling gained optical glass (pyrex sand) is 2760kg/m3, boron content is
12wt%；The apparent density of gained CRT glass (lead glass aggregate) is 2870kg/m3, lead content 24wt%；Glass micro mist
SiO in (glass powder)2Mass fraction be 85wt%
In following embodiment, for the cement used for 42.5 Portland cements of P.O, density is 3.1~3.4g/cm3,
Fine coal gray density is 0.8~1.1g/cm3；Polypropylene fibre grows 16~24mm, 40~50um of diameter, fracture strength 260MPa；Subtract
Aqua is polycarboxylic acid series high efficiency water reducing agent；The apparent density 4000kg/m of barite3, barium sulfate content 90wt%；Barite
The apparent density of sand is 3900kg/m3, blanc fixe content is less than 8wt%.
Embodiment 1
A kind of large volume cracking resistance radiation shield concrete based on scrap glass, each component and its content are shown in Table 1；Wherein rough set
Material presses 1 by lead glass aggregate and barite:2 mass ratio composition, is 5~31.5mm continuous gradings；Fine aggregate is by borosilicic acid glass
Glass sand and barite sand press 1:The fineness modulus of 5 mass ratio composition, fine aggregate is 2.5~3.0；Mineral admixture is by glass powder
1 is pressed with flyash:4 mass ratio forms, the mass ratio of methyl cellulose ether, lithium carbonate, gypsum, white lime in composite modifier
It is 1:0.5:2:2；The preparation method of the large volume cracking resistance radiation shield concrete includes the following steps：By the cement weighed, glass
Glass powder, flyash, fine aggregate, coarse aggregate, composite modifier and fiber, mixing 45s are uniformly mixed, and obtain premix material；Then will
Water-reducing agent, fiber and water in the ratio be added gained premix material in, stir 150s, until material mix it is full and uniform, i.e.,
Obtain the large volume cracking resistance radiation shield concrete based on cullet.
The match ratio of each raw material in large volume radiation-proof concrete described in 1 embodiment 1 of table
Embodiment 2
A kind of large volume cracking resistance radiation shield concrete based on scrap glass, each component and its content are shown in Table 2；Wherein rough set
Material presses 1 by lead glass aggregate and barite:3 mass ratio composition, is 5~31.5mm continuous gradings；Fine aggregate is by borosilicic acid glass
Glass sand and barite sand press 1:The fineness modulus of 4 mass ratio composition, fine aggregate is 2.5~3.0；Mineral admixture is by glass powder
1 is pressed with flyash:3 mass ratio forms, the mass ratio of methyl cellulose ether, lithium carbonate, gypsum, white lime in composite modifier
It is 1:0.6:3:2；The preparation method of the large volume cracking resistance radiation shield concrete includes the following steps：By the cement weighed, glass
Glass powder, flyash, fine aggregate, coarse aggregate, composite modifier and fiber, mixing 45s are uniformly mixed, and obtain premix material；Then will
Water-reducing agent, fiber and water in the ratio be added gained premix material in, stir 150s, until material mix it is full and uniform, i.e.,
Obtain the large volume cracking resistance radiation shield concrete based on cullet.
The match ratio of each raw material in large volume radiation-proof concrete described in 2 embodiment 2 of table
Embodiment 3
A kind of large volume cracking resistance radiation shield concrete based on scrap glass, each component and its content are shown in Table 3；Wherein rough set
Material presses 1 by lead glass aggregate and barite:3 mass ratio composition, is 5~31.5mm continuous gradings；Fine aggregate is by borosilicic acid glass
Glass sand and barite sand press 1:The fineness modulus of 3 mass ratio composition, fine aggregate is 2.5~3.0；Mineral admixture is by glass powder
1 is pressed with flyash:1 mass ratio forms, the mass ratio of methyl cellulose ether, lithium carbonate, gypsum, white lime in composite modifier
It is 1:0.5:5:5；The preparation method of the large volume cracking resistance radiation shield concrete includes the following steps：By the cement weighed, glass
Glass powder, flyash, fine aggregate, coarse aggregate, composite modifier and fiber, mixing 60s are uniformly mixed, and obtain premix material；Then will
Water-reducing agent, fiber and water in the ratio be added gained premix material in, stir 150s, until material mix it is full and uniform, i.e.,
Obtain the large volume cracking resistance radiation shield concrete based on cullet.
The match ratio of each raw material in large volume radiation-proof concrete described in 3 embodiment 3 of table
Embodiment 4
A kind of large volume cracking resistance radiation shield concrete based on scrap glass, each component and its content are shown in Table 4；Wherein rough set
Material presses 1 by lead glass aggregate and barite:2 mass ratio composition, is 5~31.5mm continuous gradings；Fine aggregate is by borosilicic acid glass
Glass sand and barite sand press 1:The fineness modulus of 3 mass ratio composition, fine aggregate is 2.5~3.0；Mineral admixture is by glass powder
1 is pressed with flyash:1 mass ratio forms, the mass ratio of methyl cellulose ether, lithium carbonate, gypsum, white lime in composite modifier
It is 1:0.8:4:5；The preparation method of the large volume cracking resistance radiation shield concrete includes the following steps：By the cement weighed, glass
Glass powder, flyash, fine aggregate, coarse aggregate, composite modifier and fiber, mixing 45s are uniformly mixed, and obtain premix material；Then will
Water-reducing agent, fiber and water in the ratio be added gained premix material in, stir 150s, until material mix it is full and uniform, i.e.,
Obtain the large volume cracking resistance radiation shield concrete based on cullet.
The match ratio of each raw material in large volume radiation-proof concrete described in 4 embodiment 4 of table
Comparative example 1
A kind of large volume cracking resistance radiation shield concrete, match ratio is roughly the same with embodiment 1, the difference is that wherein
Composite modifier is not added in match ratio.
Comparative example 2
A kind of large volume cracking resistance radiation shield concrete, match ratio is roughly the same with embodiment 1, the difference is that wherein
Change aggregate grading in match ratio to form, the mass ratio of pyrex sand and barite sand is 1:6, coarse aggregate is by lead glass bone
Material and barite press 2:1 mass ratio.
Large volume radiation-proof anti-crack concrete obtained by Examples 1 to 4 is subjected to working performance, electrical property, mechanical property respectively
Energy, shrinkage and shielding property etc. are tested, and are as a result shown in Table 4 and table 5 respectively.
The performance test result of 4 embodiment 1-4 large volume radiation-proof anti-crack concretes of table
The shielding property of 5 embodiment 1-4 large volume radiation-proof anti-crack concretes of table
The above results show gained large volume radiation-proof anti-crack concrete of the invention can express out excellent working performance,
Mechanical property, endurance quality and radiation-resistant glass effect, have a good application prospect.
Application examples
Large volume cracking resistance radiation shield concrete based on scrap glass described in the present embodiment is applied to simulate certain ion doctor
The mass concrete construction of institute's linear accelerator machinery room, wall thickness 2.5m, roofing plate thickness 1.7m, design use C30 substantially coagulations
Soil, wherein coarse aggregate press 1 by lead glass aggregate and barite:2 mass ratio composition, is 5~31.5mm continuous gradings；Fine aggregate
1 is pressed by pyrex sand and barite sand:The fineness modulus of 3 mass ratio composition, fine aggregate is 2.5~3.0；Mineral blend
Material presses 1 by glass powder and flyash:1 mass ratio forms, methyl cellulose ether, lithium carbonate, gypsum, ripe stone in composite modifier
The mass ratio of ash is 1:0.8:4:5.It is as shown in table 6 using match ratio.
Maximum temperaturerise, inside and outside maximum temperature difference are surveyed using temperature polling instrument and thermometric line inside gained mass concrete
Amount, surface crack situation are detected after 28d using crack observer after form removal, meanwhile, the mass concrete of preparation is existing
Its compression strength, tensile splitting strength are tested in field from after sample, maintenance to certain age, and the performance test results such as seepage-resistant grade are shown in Table
7。
6 large volume radiation-proof anti-crack concrete match ratio of table
7 large volume radiation-proof anti-crack concrete performance test of table
Test result shows：It is good using mass concrete compression strength and tensile splitting strength made from scrap glass
It is good, the cracking resistance of mass concrete is improved, internal maximum temperature rise is far below the standard for being less than≤50 DEG C of code requirement, interior
The outer temperature difference is far below≤25 DEG C of standard, and mass concrete does not occur crack, solves the technology of mass concrete cracking
Problem, at the same using in scrap glass lead glass and pyrex gather materials, realize the excellent radiation-screening function of concrete.
Obviously, above-described embodiment be only intended to clearly illustrate made by example, and not limitation to embodiment.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And the obvious variation or change therefore amplified
It moves within still in the protection domain of the invention.
Claims (10)
1. a kind of large volume cracking resistance radiation shield concrete based on scrap glass, which is characterized in that each component and its content include：
Water 140-160kg/m3；Cement 100-300kg/m3；Glass powder 30-100kg/m3；Flyash 50-180kg/m3；Fine aggregate 800-
1100kg/m3；Coarse aggregate 1400-2000kg/m3；Composite modifier 0.35-1.9kg/m3；Water-reducing agent 2.1-7.8kg/m3, fiber
0.6-1.2kg/m3；Wherein coarse aggregate is mixed by barite and lead glass aggregate, and fine aggregate is by pyrex sand and again
Spar sand mixes.
2. large volume cracking resistance radiation shield concrete according to claim 1, which is characterized in that the composite modifier is by first
Base cellulose ether, lithium carbonate, gypsum, white lime press 1:(0.5~0.8):(2~5):The mass ratio of (2~5) mixes.
3. large volume cracking resistance radiation shield concrete according to claim 1, which is characterized in that the fineness mould of the fine aggregate
It is 2.3-3.2 to count, and the mass ratio of pyrex sand and barite sand is 1 in fine aggregate:(1.0~5.0), wherein barite sand
Apparent density be 3800~4200kg/m3, blanc fixe content is less than 8wt%；Pyrex sand is discarded by optical glass
Object is made, and boron content is more than 10wt%.
4. large volume cracking resistance radiation shield concrete according to claim 1, which is characterized in that barite in the coarse aggregate
Mass ratio with lead glass aggregate is 1:(1.0~3.0) are 5~31.5m continuous gradings；The apparent density of wherein barite is
3900~4400kg/m3, barium sulfate content is more than 85wt%；Lead glass aggregate is made of CRT glass wastes, apparent density
More than 2800kg/m3, lead content is more than 20wt%.
5. large volume cracking resistance radiation shield concrete according to claim 1, which is characterized in that the glass powder and flyash
Mass ratio be 1:(1.0~4.0).
6. large volume cracking resistance radiation shield concrete according to claim 1, which is characterized in that the cement is low-heat silicic acid
Salt cement or Portland cement.
7. large volume cracking resistance radiation shield concrete according to claim 1, which is characterized in that the water-reducing agent is polycarboxylic acids
Series high-efficiency water-reducing agent.
8. large volume cracking resistance radiation shield concrete according to claim 1, which is characterized in that the fiber is that polypropylene is fine
Dimension, diameter≤30 μm, length≤50mm, fracture strength >=200MPa.
9. large volume cracking resistance radiation shield concrete according to claim 1, which is characterized in that the grain size of the glass powder is
30 μm or less；SiO in glass powder2Mass fraction be more than 70wt%.
10. the preparation method of any one of the claim 1~9 large volume cracking resistance radiation shield concrete, which is characterized in that including
Following steps：
1) each raw material is weighed in proportion, and each component and its content include：Water 140-160kg/m3；Cement 100-300kg/m3；Glass
Powder 30-100kg/m3；Flyash 50-180kg/m3；Fine aggregate 800-1100kg/m3；Coarse aggregate 1400-2000kg/m3；It is compound
Modifying agent 0.35-1.9kg/m3；Water-reducing agent 2.1-7.8kg/m3, fiber 0.6-1.2kg/m3；
2) it by the cement weighed, glass powder, flyash, fine aggregate, coarse aggregate, composite modifier and fiber, mixes uniform, obtains pre-
Mixed material；
3) water-reducing agent, fiber and water are added in the ratio in the premix material that step 2) obtains, stir 120s or more, until
Material mixes the full and uniform large volume cracking resistance radiation shield concrete to get described based on cullet.
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Cited By (6)
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| CN109534745A (en) * | 2018-11-29 | 2019-03-29 | 金陵科技学院 | A kind of high additive of low alkali_silica reaction expansion is discarded to crush glass self-compacting concrete preparation method |
| CN113045269A (en) * | 2021-03-15 | 2021-06-29 | 湖南工程学院 | Physical-chemical combined activated glass solid waste concrete and preparation method thereof |
| CN113683328A (en) * | 2021-09-08 | 2021-11-23 | 河南科技大学 | Radiation-proof heavy aggregate prepared from wastes and preparation method thereof |
| CN114804770A (en) * | 2022-05-06 | 2022-07-29 | 上海建工建材科技集团股份有限公司 | Iron ore radiation-proof concrete and preparation method thereof |
| CN115010437A (en) * | 2022-06-29 | 2022-09-06 | 中建商品混凝土有限公司 | Multi-density-grade pumping radiation-proof concrete |
| CN117800688A (en) * | 2024-03-01 | 2024-04-02 | 石家庄铁道大学 | High-temperature-resistant rubber concrete and preparation method thereof |
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| CN109534745A (en) * | 2018-11-29 | 2019-03-29 | 金陵科技学院 | A kind of high additive of low alkali_silica reaction expansion is discarded to crush glass self-compacting concrete preparation method |
| CN109534745B (en) * | 2018-11-29 | 2021-02-19 | 金陵科技学院 | Preparation method of low-alkali silicic acid reaction-expanded high-doping-amount waste crushed glass self-compacting concrete |
| CN113045269A (en) * | 2021-03-15 | 2021-06-29 | 湖南工程学院 | Physical-chemical combined activated glass solid waste concrete and preparation method thereof |
| CN113045269B (en) * | 2021-03-15 | 2021-11-16 | 湖南工程学院 | Physical-chemical combined activated glass solid waste concrete and preparation method thereof |
| CN113683328A (en) * | 2021-09-08 | 2021-11-23 | 河南科技大学 | Radiation-proof heavy aggregate prepared from wastes and preparation method thereof |
| CN114804770A (en) * | 2022-05-06 | 2022-07-29 | 上海建工建材科技集团股份有限公司 | Iron ore radiation-proof concrete and preparation method thereof |
| CN115010437A (en) * | 2022-06-29 | 2022-09-06 | 中建商品混凝土有限公司 | Multi-density-grade pumping radiation-proof concrete |
| CN117800688A (en) * | 2024-03-01 | 2024-04-02 | 石家庄铁道大学 | High-temperature-resistant rubber concrete and preparation method thereof |
| CN117800688B (en) * | 2024-03-01 | 2024-04-30 | 石家庄铁道大学 | High-temperature-resistant rubber concrete and preparation method thereof |
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