CN106187272A - A kind of crack resistence porous brick - Google Patents
A kind of crack resistence porous brick Download PDFInfo
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- CN106187272A CN106187272A CN201610586856.0A CN201610586856A CN106187272A CN 106187272 A CN106187272 A CN 106187272A CN 201610586856 A CN201610586856 A CN 201610586856A CN 106187272 A CN106187272 A CN 106187272A
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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
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
-
- 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
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/131—Inorganic additives
-
- 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
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/132—Waste materials; Refuse; Residues
-
- 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
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/132—Waste materials; Refuse; Residues
- C04B33/1324—Recycled material, e.g. tile dust, stone waste, spent refractory material
-
- 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
- C04B33/00—Clay-wares
- C04B33/32—Burning methods
-
- 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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/44—Metal salt constituents or additives chosen for the nature of the anions, e.g. hydrides or acetylacetonate
- C04B2235/444—Halide containing anions, e.g. bromide, iodate, chlorite
-
- 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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
Abstract
The invention discloses a kind of crack resistence porous brick, be made up of the raw material of following weight portion: emery wheel ash 5 10 parts, 10 20 parts of irony shale, 45 55 parts of building block stone, potassium hyperchlorate 15 parts, gangue 20 30 parts, bentonite in powder 10 20 parts, 50 100 parts of water, being made by broken, sealing ageing, base, drying sintering, production technology is simple, easy to make, production cost is low, good economical benefit；Utilize waste residue brickmaking, save the energy, preserve the ecological environment；Porous brick intensity is high, crack resistence performance is good, and water absorption is strong, wear-resistant；Can life-time service under cryogenic, service life is long；Of many uses, construction adaptability is strong.
Description
Technical field
The invention belongs to construction material production field, particularly to a kind of crack resistence porous brick.
Background technology
Along with socioeconomic development, building trade obtains fast development, and clay solid brick is owing to its volume is little, weight
Greatly, consuming the energy, pollute environment, present country forbids and limits production and the use of solid clay brick, not allowing shoveling to bake bricks,
Country starts advance materials for wall innovation and promote energy saving building now, actively calls building material, the exploitation of goods and popularization
Utilizing, in order to carry forward vigorously the development of novel wall material industry, various places are also given in each side such as project verification, loan, land used, tax revenue
Having given preferential policy, present various places are all utilizing other succedaneum to bake bricks, but the porous brick of main flow considers in the market
The performances such as intensity, water absorption, wearability, pressure shock resistance, do not account for crack resistence, nowadays same in proof strength of porous brick
Time easy to crack, affect wall quality, have need at short notice change, labor intensive financial resources, therefore the cracking of porous brick is asked
Topic needs solution badly.
Summary of the invention
For solving the problems referred to above, the invention discloses a kind of crack resistence porous brick, waste residue utilization, save the energy, intensity high,
Crack resistence performance is good, can life-time service under cryogenic, service life is long.
For reaching above-mentioned purpose, technical scheme is as follows:
A kind of crack resistence porous brick, it is characterised in that: it is made up of the raw material of following weight portion: emery wheel ash 5-10 part, irony shale
10-20 part, building block stone 45-55 part, potassium hyperchlorate 1-5 part, gangue 20-30 part, bentonite in powder 10-20 part, water 50-
100 parts.
The concrete preparation process of above-mentioned crack resistence porous brick is as follows:
(1) irony shale being carried out break process, broken rear particle size controls at 1-2mm；
(2) emery wheel ash is mixed with the irony shale granule after step (1), heated sealed, keep temperature 650-700 DEG C, pressure
2-6MPa, time 40-55min；
(3) mixture after step (2) is taken out, be ground into fine powder；
(4) building block stone, gangue are carried out respectively break process；
(5) add water stirring mixing by the mixture after step (3) (4) and bentonite in powder；
(6) mixture after step (5) is entered ageing storehouse by streamline and seal ageing 8-12 days, period spraying and moisturizing, protect
Hold temperature 15-20 DEG C, negative pressure 0.5-2MPa；
(7) mixture after step (6) is entered brickmaking machine together with potassium hyperchlorate, under 40-55MPa, be squeezed into adobe code exist
On feeding car；
(8) after adobe dries 5-8 hour at a temperature of 30 ± 5 DEG C, feeding car is sent into drying chamber, the temperature of 70-80 DEG C
Lower drying 3-4 days；
(9) being entered by feeding car in the first sintering oven, sintering temperature is 900-1000 DEG C, and sintering time is 6-10 hour, charging
Car enters the second sintering oven, and sintering temperature is 690-760 DEG C, and sintering time is 24-28 hour, and feeding car returns to the first sintering
Kiln, sintering time is 4-6 hour, takes out and polish after natural cooling.
As a modification of the present invention, method broken in described step (1) (4) is jaw crushing, hammer crushing, Mus
Cage type crushing three grades crushes.
As a modification of the present invention, after the building block stone after described step (4) is broken, particle size controls
1-6mm。
As a modification of the present invention, after the gangue after described step (4) is broken, particle size controls at 1-2mm.
As a modification of the present invention, the adobe a size of 240 mm × 190 mm × 190mm after described step (7).
As a modification of the present invention, being provided with 18 holes in the middle of the adobe after described step (7), each bore dia is
15-20mm。
The present invention makes porous brick with emery wheel ash, irony shale, building block stone, gangue for primary raw material, on
Stating material is all industry, construction waste, does not use cement, and production cost is low, has saved clay resource, twice laid, energy-saving ring
Protecting, intensity is high, and crack resistence performance is good, the waste material after wherein gangue is coal mining, and emery wheel ash is emery wheel processing polishing foundry goods
When, mutual fricative particulate waste, containing substantial amounts of Si02, Al203, iron filings in emery wheel ash, material can be made
Being prone to melted, make brick structure uniform, closely knit, intensity increases, the most easy to crack, and refractoriness is high, and wherein iron filings are the shapes with Fe2O3
Formula exist, with pulverize after irony shale high-temperature pressurizing process after, fragment of brick both can have been made to take on a red color, meet normal person to brick
The impression of block, is again a kind of strong flux, can reduce the sintering temperature of fragment of brick, saves the energy, and sintering temperature fluctuation is little,
Not havinging under-burned brick or burrs, the percentage of A-class goods is high, and irony shale iron-holder is higher, in China's Mesozoic and Cenozoic time stratum
Distribution is very wide, the porous brick made with remaining raw material such as emery wheel ash gangue after smashing, solid, and intensity, hardness height is wear-resistant,
Can life-time service under cryogenic, service life is long, will not ftracture because temperature drastically changes, again will not porcelain, hard
Not crushing, have little compared with strong absorptive, shrinkage factor, have the several functions such as wear-resisting, pressure, acid and alkali-resistance, aging resistance, the present invention is raw
Production. art is simple, easy to make, and in sintering oven during sintering, gangue sintering time at a temperature of 650-800 DEG C is 1-2 hour
After can start spontaneous combustion, it is possible to adobe is sintered from the inside to surface thorough, does not haves the uneven cracking phenomena caused of sintering, save
The coal charge of sintering, decreases waste gas and discharges.
Sintering of the present invention is to carry out at the sintering oven that two temperature are different, uses that " high-temperature baking, insulation consolidate
Gu, high temperature condense " mode carry out, the adobe after described step (7) all piles up on feeding car, use feeding car respectively 2
Sintering in individual sintering oven, improves fragment of brick condensation degree, and without adobe being stirred, direct pile is fired on coaster, reduces people
Work labor intensity, reduces production cost.
Irony shale, building block stone, gangue, the mixture of bentonite in powder are carried out close in step (6) by the present invention
Envelope ageing, the most in its natural state ageing need more than 20 days can aquation and carry out ion exchange, surface and inside
Performance is uniform, and present invention ageing is keeping temperature 15-20 DEG C, negative pressure 0.5-2MPa, and the time has only to about 10 days, and can
Make that aquation and ion exchange carry out is more abundant, improves the plasticity of raw material, additionally it is possible to accelerate redox reaction. make raw pine
Soft uniformly, increase plasticity, improve mobility and cementability, improve the quality of fragment of brick, be aged through negative pressure of the present invention, produce
The dried cracking percent defective of product reduces 15%, and the percent defective that ftractures after sintering reduces 8%, and the percent defective that ftractures after using 3 years reduces
21%, plasticity index improves 2-3.
Broken for building block stone rear particle size is controlled at 1-6mm in step (4) by the present invention, it is ensured that porous brick
Intensity, the particle size of remaining raw material is the least, and rear granule broken with building block stone mixes the fragment of brick made, fall
Sintering temperature and low, surface is fine and smooth, can either ensure water absorption, ensure that porous brick intensity, saves the energy.
The present invention adds a certain amount of potassium hyperchlorate in raw material, can start to decomposite oxygen when sintering when 400 DEG C,
The oxygen decomposited is the oxygen source that coal burning provides necessity, has saved the coal charge of sintering, decreases waste gas and discharges, saves and burn
The knot time.
Porous brick of the present invention, compared with solid brick, can make building weight reduction 30-40%, and efficiency of construction improves
50%, it is not necessary to use clay, to save fuel 20-30%, and yield rate is high, weatherability is strong, does not ftractures.
Crack resistence porous brick of the present invention, color is deep red red, and fragment of brick surface is complete, intact stupefied arrisdefect, crackle few and
Narrow and shallow, without scum, tap sound more crisp, without playing powder, fall to consider phenomenon to be worth doing.
Crack resistence porous brick of the present invention is carried out performance detection, and testing result is as follows: water absorption rate≤18%, resistance to compression
Intensity reaches MU3.0, shrinkage value≤0.3mm/m, frost resistance loss of strength≤13%, excellent combination property, and service life is long.
The invention has the beneficial effects as follows:
1, production technology is simple, and easy to make, production cost is low, good economical benefit；
2, utilize waste residue brickmaking, save the energy, preserve the ecological environment；
3, intensity is high, crack resistence performance is good, and water absorption is strong, wear-resistant；
4, can life-time service under cryogenic, service life is long；
5, of many uses, construction adaptability is strong.
Detailed description of the invention
Embodiment 1
A kind of crack resistence porous brick described in the present embodiment, is made up of the raw material of following weight portion: emery wheel ash 8 parts, irony shale
15 parts, 50 parts of building block stone, potassium hyperchlorate 3 parts, gangue 25 parts, bentonite in powder 15 parts, 80 parts of water.
Its concrete preparation process is as follows:
(1) irony shale being carried out break process, broken rear particle size controls at 1mm；
(2) emery wheel ash is mixed with the irony shale granule after step (1), heated sealed, holding temperature 680 DEG C, pressure 4MPa,
Time 48min；
(3) mixture after step (2) is taken out, be ground into the fine powder of 32 μm；
(4) building block stone, gangue are carried out respectively break process, particle size control after wherein building block stone is broken
Making at 4mm, after gangue is broken, particle size controls at 2mm；
(5) add water stirring mixing by the mixture after step (3) (4) and bentonite in powder；
(6) mixture after step (5) is entered ageing storehouse by streamline and seal ageing 10 days, period spraying and moisturizing, keep
Temperature 17 DEG C, negative pressure 1MPa；
(7) mixture after step (6) is entered brickmaking machine together with potassium hyperchlorate, under 46MPa, be squeezed into adobe code entering
On truck, adobe a size of 240 × 190 × 190mm, it is provided with 18 holes in the middle of adobe, each bore dia is 18mm；
(8) after adobe dries 7 hours at a temperature of 30 DEG C, feeding car is sent into drying chamber, at a temperature of 75 DEG C, dry 3
My god；
(9) being entered by feeding car in the first sintering oven, sintering temperature is 950 DEG C, and sintering time is 8 hours, and feeding car enters the
Two sintering ovens, sintering temperature is 720 DEG C, and sintering time is 26 hours, and feeding car returns to the first sintering oven, and sintering time is 5 little
Time, take out after natural cooling and polish.
Method broken in step described in the present embodiment (1) (4) is that jaw crushing, hammer crushing, squirrel-cage crush three grades
Broken.
Crack resistence porous brick described in the present embodiment, color is deep red red, and performance detects: water absorption rate 16%, comprcssive strength reaches
MU3.0, shrinkage value 0.36mm/m, weight loss 3.8%, frost resistance loss of strength 14%, crackle is less than 40, and crack width is less than
1mm, crack length is less than 40mm, and crack depth is less than 3mm, and excellent combination property, service life is long.
Embodiment 2
A kind of crack resistence porous brick described in the present embodiment, is made up of the raw material of following weight portion: emery wheel ash 5 parts, irony shale
20 parts, 45 parts of building block stone, potassium hyperchlorate 5 parts, gangue 20 parts, bentonite in powder 20 parts, 100 parts of water.
Its concrete preparation process is as follows:
(1) irony shale being carried out break process, broken rear particle size controls at 1mm；
(2) emery wheel ash is mixed with the irony shale granule after step (1), heated sealed, holding temperature 700 DEG C, pressure 2MPa,
Time 55min；
(3) mixture after step (2) is taken out, be ground into the fine powder of 40 μm；
(4) building block stone, gangue are carried out respectively break process, particle size control after wherein building block stone is broken
Making at 1mm, after gangue is broken, particle size controls at 2mm；
(5) add water stirring mixing by the mixture after step (3) (4) and bentonite in powder；
(6) mixture after step (5) is entered ageing storehouse by streamline and seal ageing 8 days, period spraying and moisturizing, keep temperature
Spend 20 DEG C, negative pressure 0.5MPa；
(7) mixture after step (6) is entered brickmaking machine together with potassium hyperchlorate, under 55MPa, be squeezed into adobe code entering
On truck, adobe a size of 240 × 190 × 190mm, it is provided with 18 holes in the middle of adobe, each bore dia is 15mm；
(8) after adobe dries 8 hours at a temperature of 35 DEG C, feeding car is sent into drying chamber, at a temperature of 70 DEG C, dry 4
My god；
(9) being entered by feeding car in the first sintering oven, sintering temperature is 900 DEG C, and sintering time is 10 hours, and feeding car enters the
Two sintering ovens, sintering temperature is 690 DEG C, and sintering time is 28 hours, and feeding car returns to the first sintering oven, and sintering time is 4 little
Time, take out after natural cooling and polish.
Method broken in step described in the present embodiment (1) (4) is that jaw crushing, hammer crushing, squirrel-cage crush three grades
Broken.
Crack resistence porous brick described in the present embodiment, color is deep red red the most black, and performance detects: water absorption rate 19%, comprcssive strength
Reaching MU3.0, shrinkage value 0.39mm/m, weight loss 4.4%, frost resistance loss of strength 14%, crackle is less than 50, crack width
Less than 1mm, crack length is less than 30mm, and crack depth is less than 3mm, and excellent combination property, service life is long.
Embodiment 3
A kind of crack resistence porous brick described in the present embodiment, is made up of the raw material of following weight portion: emery wheel ash 10 parts, irony shale
10 parts, 55 parts of building block stone, potassium hyperchlorate 1 part, gangue 30 parts, bentonite in powder 10 parts, 50 parts of water.
Its concrete preparation process is as follows:
(1) irony shale being carried out break process, broken rear particle size controls at 2mm；
(2) emery wheel ash is mixed with the irony shale granule after step (1), heated sealed, holding temperature 650 DEG C, pressure 6MPa,
Time 40min；
(3) mixture after step (2) is taken out, be ground into the fine powder of 20 microns；
(4) building block stone, gangue are carried out respectively break process, particle size control after wherein building block stone is broken
Making at 6mm, after gangue is broken, particle size controls at 1mm；
(5) add water stirring mixing by the mixture after step (3) (4) and bentonite in powder；
(6) mixture after step (5) is entered ageing storehouse by streamline and seal ageing 12 days, period spraying and moisturizing, keep
Temperature 15 DEG C, negative pressure 2MPa；
(7) mixture after step (6) is entered brickmaking machine together with potassium hyperchlorate, under 40MPa, be squeezed into adobe code entering
On truck, adobe a size of 240 × 190 × 190mm, it is provided with 18 holes in the middle of adobe, each bore dia is 20mm；
(8) after adobe dries 5 hours at a temperature of 25 DEG C, feeding car is sent into drying chamber, at a temperature of 80 DEG C, dry 3
My god；
(9) being entered by feeding car in the first sintering oven, sintering temperature is 1000 DEG C, and sintering time is 6 hours, and feeding car enters the
Two sintering ovens, sintering temperature is 760 DEG C, and sintering time is 24 hours, and feeding car returns to the first sintering oven, and sintering time is 6 little
Time, take out after natural cooling and polish.
Method broken in step described in the present embodiment (1) (4) is that jaw crushing, hammer crushing, squirrel-cage crush three grades
Broken.
Crack resistence porous brick described in the present embodiment, color is deep red red, and performance detects: water absorption rate 18%, comprcssive strength reaches
MU3.0, shrinkage value 0.37mm/m, weight loss 3.7%, frost resistance loss of strength 13%, crackle is less than 40, and crack width is less than
1mm, crack length is less than 50mm, and crack depth is less than 2mm, and excellent combination property, service life is long.
Claims (7)
1. a crack resistence porous brick, it is characterised in that: it is made up of the raw material of following weight portion: emery wheel ash 5-10 part, irony page
Rock 10-20 part, building block stone 45-55 part, potassium hyperchlorate 1-5 part, gangue 20-30 part, bentonite in powder 10-20 part, water
50-100 part.
2. the preparation method of a crack resistence porous brick, it is characterised in that: concrete preparation process is as follows:
(1) irony shale being carried out break process, broken rear particle size controls at 1-2mm；
(2) emery wheel ash is mixed with the irony shale granule after step (1), heated sealed, keep temperature 650-700 DEG C, pressure
2-6MPa, time 40-55min；
(3) mixture after step (2) is taken out, be ground into fine powder；
(4) building block stone, gangue are carried out respectively break process；
(5) add water stirring mixing by the mixture after step (3) (4) and bentonite in powder；
(6) mixture after step (5) is entered ageing storehouse by streamline and seal ageing 8-12 days, period spraying and moisturizing, protect
Hold temperature 15-20 DEG C, negative pressure 0.5-2MPa；
(7) mixture after step (6) is entered brickmaking machine together with potassium hyperchlorate, under 40-55MPa, be squeezed into adobe code exist
On feeding car；
(8) after adobe dries 5-8 hour at a temperature of 30 ± 5 DEG C, feeding car is sent into drying chamber, the temperature of 70-80 DEG C
Lower drying 3-4 days；
(9) being entered by feeding car in the first sintering oven, sintering temperature is 900-1000 DEG C, and sintering time is 6-10 hour, charging
Car enters the second sintering oven, and sintering temperature is 690-760 DEG C, and sintering time is 24-28 hour, and feeding car returns to the first sintering
Kiln, sintering time is 4-6 hour, takes out and polish after natural cooling.
The preparation method of a kind of crack resistence porous brick the most according to claim 2, it is characterised in that: described step (1) (4)
In broken method be that jaw crushing, hammer crushing, squirrel-cage crush three grades and crush.
The preparation method of a kind of crack resistence porous brick the most according to claim 2, it is characterised in that: after described step (4)
Building block stone broken after particle size control at 1-6mm.
The preparation method of a kind of crack resistence porous brick the most according to claim 2, it is characterised in that: after described step (4)
Gangue broken after particle size control at 1-2mm.
The preparation method of a kind of crack resistence porous brick the most according to claim 2, it is characterised in that: after described step (7)
Adobe a size of 240 mm × 190 mm × 190mm.
The preparation method of a kind of crack resistence porous brick the most according to claim 2, it is characterised in that: after described step (7)
Adobe in the middle of be provided with 18 holes, each bore dia is 15-20mm.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108033762A (en) * | 2017-12-11 | 2018-05-15 | 覃振程 | A kind of crack resistence porous brick and preparation method thereof |
| CN108503279A (en) * | 2017-02-28 | 2018-09-07 | 北京城泰混凝土制品有限公司 | Frost-resistant concrete and preparation method thereof |
| CN108503299A (en) * | 2017-02-28 | 2018-09-07 | 北京城泰混凝土制品有限公司 | Strong intensity steel fiber reinforced concrete |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108503279A (en) * | 2017-02-28 | 2018-09-07 | 北京城泰混凝土制品有限公司 | Frost-resistant concrete and preparation method thereof |
| CN108503299A (en) * | 2017-02-28 | 2018-09-07 | 北京城泰混凝土制品有限公司 | Strong intensity steel fiber reinforced concrete |
| CN108503279B (en) * | 2017-02-28 | 2021-02-23 | 北京城泰混凝土制品有限公司 | Antifreezing concrete and preparation method thereof |
| CN108033762A (en) * | 2017-12-11 | 2018-05-15 | 覃振程 | A kind of crack resistence porous brick and preparation method thereof |
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Application publication date: 20161207 |