CN107382248A - Modified raw soil and the method for green cob brick and its green cob brick of preparation are prepared using modified raw soil - Google Patents
Modified raw soil and the method for green cob brick and its green cob brick of preparation are prepared using modified raw soil Download PDFInfo
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- CN107382248A CN107382248A CN201710665715.2A CN201710665715A CN107382248A CN 107382248 A CN107382248 A CN 107382248A CN 201710665715 A CN201710665715 A CN 201710665715A CN 107382248 A CN107382248 A CN 107382248A
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- cob brick
- green cob
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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
- C04B28/14—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 calcium sulfate cements
- C04B28/141—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 calcium sulfate cements containing dihydrated gypsum before the final hardening step, e.g. forming a dihydrated gypsum product followed by a de- and rehydration step
-
- 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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
- C04B20/023—Chemical treatment
-
- 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
- C04B28/14—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 calcium sulfate cements
- C04B28/142—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 calcium sulfate cements containing synthetic or waste calcium sulfate cements
- C04B28/143—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 calcium sulfate cements containing synthetic or waste calcium sulfate cements the synthetic calcium sulfate being phosphogypsum
-
- 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
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent 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
- 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
Abstract
The method of green cob brick and its green cob brick of preparation are prepared the invention discloses a kind of modified raw soil and using modified raw soil, belongs to building material technical field.It is made up of the raw-soil and modifying agent, the mass percent of the raw-soil and modifying agent is 75~80%：20~25%, modifying agent includes the component of following mass percent：Cement 24.3%~27%, CHARACTERISTICS OF TAILINGS SAND 43.3%~48.5%, mine tailing 9.7%~10.8%, flyash 9.7%~10.8% and ardealite 4.8%~5.4%；Water reducer 2.6%~2.9%, short basalt fiber or polypropylene fibre that volume volume is 0.2%~0.6% can be also added in modifying agent.Green cob brick mechanical property, water resistance, durability and the impermeability of preparation have significant improvement, and the green cob brick being prepared can effectively be applied to various buildings, handicraft or by sand cure applications in technical fields such as river levee bank regulations.
Description
Technical field
The present invention relates to modified raw soil, belongs to building material technical field, more particularly to a kind of modified raw soil and utilization
Modified raw soil prepares the method for green cob brick and its green cob brick of preparation.
Background technology
The raw-soil is its natural, health, environmental protection, economical as a kind of construction material, is a kind of higher material of cost performance,
Often green cob brick is made to be used using compacting or straight forming in people.Earth building based on green cob brick saves the energy,
Easy construction, and it is cool in summer and warm in winter, healthy comfortable, but low intensity, poor toughness, poor water resistance, poor durability generally be present in green cob brick
The problems such as, it drastically influence the service life of earth building.
In addition, current a large amount of caused industrial residues not only occupy soil, the reasonable and practical of soil, and part work are influenceed
Industry waste residue can also cause a certain degree of pollution to environment, studied at present by industrial residue be doped to concrete, pitch or
It is used for civil engineering construction applications in mortar, wherein have research that part industrial residue is added in concrete, and by foaming
Technique, the air entrained concrete brick being prepared, it is to take full advantage of discarded object the advantages of such air entrained concrete brick, reduces production
Cost, shortcoming are that the resistance to compression of product, rupture strength etc. need to be improved.
The content of the invention
In order to solve the above technical problems, the present invention is open on the basis of green cob brick pressure-proof and snap-resistent performance is further improved
A kind of modified raw soil and prepare the method for green cob brick and its green cob brick of preparation using modified raw soil.
To achieve the above object, the invention discloses a kind of modified raw soil, be made up of the raw-soil and modifying agent, the raw-soil and
The mass percent of modifying agent is 75~80%：20~25%, the modifying agent includes the component of following mass percent：Cement
24.3%~27%, CHARACTERISTICS OF TAILINGS SAND 43.3%~48.5%, mine tailing 9.7%~10.8%, flyash 9.7%~10.8%, phosphorus
Gypsum 4.8%~5.4% and water reducer 2.6%~2.9%.
Further, the modifying agent also includes the short basalt fiber or polypropylene that volume volume is 0.2%~0.6%
Fiber.
Yet further, the mine tailing is to use CHARACTERISTICS OF TAILINGS SAND to carry out grinding to be machined to specific surface area as 350~450m2/
Kg powder.
Further, the CHARACTERISTICS OF TAILINGS SAND is rich iron CHARACTERISTICS OF TAILINGS SAND, the content of silica in the rich iron CHARACTERISTICS OF TAILINGS SAND
For more than 65%.
Further, the grain diameter of the CHARACTERISTICS OF TAILINGS SAND is 0.30~2.36mm.
Further, the water reducer is naphthalene water reducer, and the water-reducing rate of the naphthalene water reducer is 20~25%,
It is 0.11~0.12 that the naphthalene water reducer, which controls the water-solid ratio of whole system,.
Further, the cement is the new class g cement of board normal silicate 42.5 of China.
Further, the ardealite is dihydrate gypsum.
The invention also discloses a kind of method that green cob brick is prepared using above-mentioned modified raw soil, preparation technology is：Will be corresponding
Modified raw soil is obtained after the raw-soil and modifying agent of ratio are well mixed, modified raw soil is put into brick die, in 6~10Mpa
Pressure under it is compressing, progress standard curing 28~40 days disposed within is stripped after 1~3 day, obtains green cob brick.
The invention also discloses the green cob brick prepared using the above-mentioned method for preparing green cob brick.
The selection principle of modified raw soil constitutive material：
1st, the selection of CHARACTERISTICS OF TAILINGS SAND and mine tailing：CHARACTERISTICS OF TAILINGS SAND and mine tailing belong to industrial solid castoff, are meeting GBT
14684/2001《Building sand》In specification on the basis of technical indicator, it is ensured that it possesses excellent mechanical performances and grading,
So as to improve the mechanical property of the green cob brick of preparation；Wherein, during green cob brick is prepared, CHARACTERISTICS OF TAILINGS SAND be as fine aggregate,
The supporting role of fine aggregate is played, improves the stability and its mechanical property of green cob brick, and surface area is 350~450m2/ kg's
Mine tailing not only has good physics filing effect, can be very good to increase the density of green cob brick, while have certain
Activity, generation CSH gels can be reacted with cement, further increase the intensity of green cob brick.
2nd, the selection of short basalt fiber or polypropylene fibre：Short basalt fiber or polypropylene fibre possess high temperature resistant
Property, anti-oxidant, radioresistance, adiabatic diaphragm sound, filterability are good, incompressible intensity and shear strength are high, being adapted under various environment makes
With, wherein, short basalt fiber belongs to the higher pure natural inorganic metallic materials of cost performance, and the two can overcome the disadvantages that the common raw-soil
The bad adhesion of brick, the technical problem that anti-bending strength is poor and anti-permeability performance is poor.
Beneficial effect
1st, green cob brick prepared by the present invention, by adding CHARACTERISTICS OF TAILINGS SAND and mine tailing, can increase exponentially the resistance to compression of green cob brick
Fracture resistance, wherein, the addition of mine tailing and the dimension scale of mine tailing also possess necessarily to the intensity and toughness of green cob brick
Influence, within the specific limits, the amount of mine tailing is higher, and grain size is smaller, and the pressure-proof and snap-resistent performance of green cob brick is better.
2nd, green cob brick prepared by the present invention, on the basis of a certain amount of short basalt fiber or polypropylene fibre is added,
The water resistance of green cob brick, which there has also been, significantly to be lifted.
3rd, green cob brick prepared by the present invention can effectively be applied to various buildings, handicraft or by sand cure applications
In technical fields such as river levee bank regulations.
Embodiment
In order to preferably explain the present invention, below in conjunction with the specific embodiment main contents that the present invention is furture elucidated, but
Present disclosure is not limited solely to following examples.
Embodiment 1
By 600g rich irons CHARACTERISTICS OF TAILINGS SAND (preferably in rich iron CHARACTERISTICS OF TAILINGS SAND the mass percentage content of silica be 65%,
The grain diameter of rich iron CHARACTERISTICS OF TAILINGS SAND is 1.5mm), the new class g cement of board normal silicate 42.5 of 300g China, 120g mine tailings (preferably
The specific surface area of mine tailing is 400m2/ kg), 120g flyash and 60g dihydrate gypsums be added to stirring 2 in the 4900g raw-soil~
5min obtains mixture, then 36g naphthalene water reducers are dissolved into 600g water to (water-reducing rate of preferably naphthalene water reducer is
20%), pour into the agitator for containing said mixture and continue 2~8min of stirring, the water-solid ratio for controlling whole system is
0.11；The modified raw-soil is obtained, the modified raw-soil is placed in long 240mm × wide 50mm × high 115mm mould, is used
8MPa pressure is compressing, is stripped after 1 day and is put into indoor carry out standard curing, and it is 20 DEG C or so to control indoor temperature, relatively wet
Degree 25%, standard curing reach certain age and obtain modified green cob brick.
Embodiment 2
By 600g rich irons CHARACTERISTICS OF TAILINGS SAND (preferably in rich iron CHARACTERISTICS OF TAILINGS SAND the mass percentage content of silica be 65%,
The grain diameter of rich iron CHARACTERISTICS OF TAILINGS SAND is 1.5mm), the new class g cement of board normal silicate 42.5 of 300g China, 120g mine tailings (preferably
The specific surface area of mine tailing is 400m2/ kg), 120g flyash and 60g dihydrate gypsums be added to stirring 2 in the 4900g raw-soil~
5min, then 36g naphthalene water reducers are dissolved into 600g water (preferably the water-reducing rate of naphthalene water reducer is 20%), it is subsequently poured into and stirs
Mix and continue 2~8min of stirring in device, the short basalt fiber of volume volume 0.2% is uniformly put into mixer continued afterwards
3min is stirred, the water-solid ratio for controlling whole system is 0.11；The modified raw-soil is obtained, the raw-soil after modification is placed in length
It is compressing with 8MPa pressure in 240mm × wide 50mm × high 115mm mould, it is stripped after 1 day and is put into indoor carry out standard
Maintenance, control indoor temperature as 20 DEG C or so, relative humidity 25%, standard curing reaches certain age and obtains the modified raw-soil
Brick.
Embodiment 3
By 600g rich irons CHARACTERISTICS OF TAILINGS SAND (preferably in rich iron CHARACTERISTICS OF TAILINGS SAND the mass percentage content of silica be 65%,
The grain diameter of rich iron CHARACTERISTICS OF TAILINGS SAND is 1.5mm), the new class g cement of board normal silicate 42.5 of 300g China, 120g mine tailings it is (excellent
The specific surface area for selecting mine tailing is 400m2/ kg), 120g flyash and 60g dihydrate gypsums be added to stirring 2 in the 4900g raw-soil~
5min, then 36g naphthalene water reducers are dissolved into 600g water (preferably the water-reducing rate of naphthalene water reducer is 22%), it is subsequently poured into and stirs
Mix and continue 2~8min of stirring in device, the polypropylene fibre of volume volume 0.2% is uniformly put into mixer continue to stir afterwards
3min is mixed, the water-solid ratio for controlling whole system is 0.11；The modified raw-soil is obtained, the raw-soil after modification is placed in length
It is compressing with 8MPa pressure in 240mm × wide 50mm × high 115mm mould, it is stripped after 1 day and is put into indoor carry out standard
Maintenance, control indoor temperature as 20 DEG C or so, relative humidity 25%, standard curing reaches certain age and obtains the modified raw-soil
Brick.
Embodiment 4
By 600g rich irons CHARACTERISTICS OF TAILINGS SAND (preferably in rich iron CHARACTERISTICS OF TAILINGS SAND the mass percentage content of silica be 70%,
The grain diameter of rich iron CHARACTERISTICS OF TAILINGS SAND is 0.5mm), the new class g cement of board normal silicate 42.5 of 375g China, 150g mine tailings it is (excellent
The specific surface area for selecting mine tailing is 350m2/ kg), 150g flyash and 75g dihydrate gypsums be added to stirring 2 in the 4200g raw-soil~
5min, then 36g naphthalene water reducers are dissolved into 600g water (preferably the water-reducing rate of naphthalene water reducer is 22%), it is subsequently poured into and stirs
Mix and continue 2~8min of stirring in device, the water-solid ratio for controlling whole system is 0.12；The modified raw-soil is obtained, after modification
The raw-soil be placed in long 240mm × wide 50mm × high 115mm mould, it is compressing with 8MPa pressure, after 2 days the demoulding be put into
Indoor carry out standard curing, it is 20 DEG C or so to control indoor temperature, and relative humidity 15%, standard curing reaches certain age and obtained
Modified green cob brick.
Embodiment 5
By 600g rich irons CHARACTERISTICS OF TAILINGS SAND (preferably in rich iron CHARACTERISTICS OF TAILINGS SAND the mass percentage content of silica be 70%,
The grain diameter of rich iron CHARACTERISTICS OF TAILINGS SAND is 0.5mm), the new class g cement of board normal silicate 42.5 of 375g China, 150g mine tailings it is (excellent
The specific surface area for selecting mine tailing is 350m2/ kg), 150g flyash and 75g dihydrate gypsums be added to stirring 2 in the 4200g raw-soil~
5min, then 36g naphthalene water reducers are dissolved into 600g water (preferably the water-reducing rate of naphthalene water reducer is 22%), it is subsequently poured into and stirs
Mix and continue 2~8min of stirring in device, the short basalt fiber of volume volume 0.5% is uniformly put into mixer continued afterwards
5min is stirred, the water-solid ratio for controlling whole system is 0.12；The modified raw-soil is obtained, the raw-soil after modification is placed in length
It is compressing with 8MPa pressure in 240mm × wide 50mm × high 115mm mould, it is stripped after 2 days and is put into indoor carry out standard
Maintenance, control indoor temperature as 20 DEG C or so, relative humidity 15%, standard curing reaches certain age and obtains the modified raw-soil
Brick.
Embodiment 6
By 600g rich irons CHARACTERISTICS OF TAILINGS SAND (preferably in rich iron CHARACTERISTICS OF TAILINGS SAND the mass percentage content of silica be 70%,
The grain diameter of rich iron CHARACTERISTICS OF TAILINGS SAND is 0.5mm), the new class g cement of board normal silicate 42.5 of 375g China, 150g mine tailings it is (excellent
The specific surface area for selecting mine tailing is 350m2/ kg), 150g flyash and 75g dihydrate gypsums be added to stirring 2 in the 4200g raw-soil~
5min, then 36g naphthalene water reducers are dissolved into 600g water (preferably the water-reducing rate of naphthalene water reducer is 22%), it is subsequently poured into and stirs
Mix and continue 2~8min of stirring in device, the polypropylene fibre of volume volume 0.5% is uniformly put into mixer continue to stir afterwards
5min is mixed, the water-solid ratio for controlling whole system is 0.12；The modified raw-soil is obtained, the raw-soil after modification is placed in length
It is compressing with 8MPa pressure in 240mm × wide 50mm × high 115mm mould, it is stripped after 2 days and is put into indoor carry out standard
Maintenance, control indoor temperature as 20 DEG C or so, relative humidity 15%, standard curing reaches certain age and obtains the modified raw-soil
Brick.
Embodiment 7
By 670g rich irons CHARACTERISTICS OF TAILINGS SAND (preferably in rich iron CHARACTERISTICS OF TAILINGS SAND the mass percentage content of silica be 70%,
The grain diameter of rich iron CHARACTERISTICS OF TAILINGS SAND is 0.5mm), 375g the China new class g cement of board normal silicate 42.5,150g flyash and 75g
Dihydrate gypsum is added to 2~5min of stirring in the 4200g raw-soil, then 40g naphthalene water reducers are dissolved into 600g water into (preferably naphthalene system
22%) water-reducing rate of water reducer is, is subsequently poured into agitator and continues 2~8min of stirring, afterwards by the poly- of volume volume 0.5%
Tacryl, which is uniformly put into mixer, to be continued to stir 5min, and the water-solid ratio for controlling whole system is 0.12；Obtain modified
The raw-soil, the raw-soil after modification is placed in long 240mm × wide 50mm × high 115mm mould, is pressed into 8MPa pressure
Type, it is stripped after 2 days and is put into indoor carry out standard curing, it is 20 DEG C or so to control indoor temperature, relative humidity 15%, standard curing
Reaching certain age obtains modified green cob brick.
Embodiment 8
By 670g rich irons CHARACTERISTICS OF TAILINGS SAND (preferably in rich iron CHARACTERISTICS OF TAILINGS SAND the mass percentage content of silica be 70%,
The grain diameter of rich iron CHARACTERISTICS OF TAILINGS SAND is 0.5mm), the new class g cement of board normal silicate 42.5 of 375g China, 80g mine tailings (preferably
The specific surface area of mine tailing is 400m2/ kg), 150g flyash and 75g dihydrate gypsums be added to stirring 2 in the 4200g raw-soil~
5min, then 40g naphthalene water reducers are dissolved into 600g water (preferably the water-reducing rate of naphthalene water reducer is 22%), it is subsequently poured into and stirs
Mix and continue 2~8min of stirring in device, the polypropylene fibre of volume volume 0.5% is uniformly put into mixer continue to stir afterwards
5min is mixed, the water-solid ratio for controlling whole system is 0.12；The modified raw-soil is obtained, the raw-soil after modification is placed in length
It is compressing with 8MPa pressure in 240mm × wide 50mm × high 115mm mould, after 2 days the demoulding be put into indoor carry out standard and support
Shield, control indoor temperature as 20 DEG C or so, relative humidity 15%, standard curing reaches certain age and obtains the modified raw-soil
Brick.
Embodiment 9
By 670g rich irons CHARACTERISTICS OF TAILINGS SAND (preferably in rich iron CHARACTERISTICS OF TAILINGS SAND the mass percentage content of silica be 70%,
The grain diameter of rich iron CHARACTERISTICS OF TAILINGS SAND is 0.5mm), the new class g cement of board normal silicate 42.5 of 375g China, 80g mine tailings (preferably
The specific surface area of mine tailing is 350m2/ kg), 150g flyash and 75g dihydrate gypsums be added to stirring 2 in the 4200g raw-soil~
5min, then 40g naphthalene water reducers are dissolved into 600g water (preferably the water-reducing rate of naphthalene water reducer is 22%), it is subsequently poured into and stirs
Mix and continue 2~8min of stirring in device, the polypropylene fibre of volume volume 0.5% is uniformly put into mixer continue to stir afterwards
5min is mixed, the water-solid ratio for controlling whole system is 0.12；The modified raw-soil is obtained, the raw-soil after modification is placed in length
It is compressing with 8MPa pressure in 240mm × wide 50mm × high 115mm mould, after 2 days the demoulding be put into indoor carry out standard and support
Shield, control indoor temperature as 20 DEG C or so, relative humidity 15%, standard curing reaches certain age and obtains the modified raw-soil
Brick.
Embodiment 10
By 670g rich irons CHARACTERISTICS OF TAILINGS SAND (preferably in rich iron CHARACTERISTICS OF TAILINGS SAND the mass percentage content of silica be 70%,
The grain diameter of rich iron CHARACTERISTICS OF TAILINGS SAND is 0.5mm), the new class g cement of board normal silicate 42.5 of 375g China, 120g mine tailings it is (excellent
The specific surface area for selecting mine tailing is 350m2/ kg), 150g flyash and 75g dihydrate gypsums be added to stirring 2 in the 4200g raw-soil~
5min, then 40g naphthalene water reducers are dissolved into 600g water (preferably the water-reducing rate of naphthalene water reducer is 22%), it is subsequently poured into and stirs
Mix and continue 2~8min of stirring in device, the polypropylene fibre of volume volume 0.5% is uniformly put into mixer continue to stir afterwards
5min is mixed, the water-solid ratio for controlling whole system is 0.12；The modified raw-soil is obtained, the raw-soil after modification is placed in length
It is compressing with 8MPa pressure in 240mm × wide 50mm × high 115mm mould, it is stripped after 2 days and is put into indoor carry out standard
Maintenance, control indoor temperature as 20 DEG C or so, relative humidity 15%, standard curing reaches certain age and obtains the modified raw-soil
Brick.
Comparative example 1：
750g river sands, 375g the China new class g cement of board normal silicate 42.5,150g flyash and 75g dihydrate gypsums are added
Enter into the 1650g raw-soil and stir 2min, then 36g naphthalene water reducers are dissolved into 600g water (the preferably diminishing of naphthalene water reducer
Rate is 22%), to be subsequently poured into agitator and continue to stir 2min, and the water-solid ratio for controlling whole system is 0.11；Obtain modified
The raw-soil, the raw-soil after modification is placed in long 240mm × wide 50mm × high 115mm mould, is pressed into 8MPa pressure
Type, it is stripped after 2 days and is put into indoor carry out standard curing, it is 20 DEG C or so to control indoor temperature, relative humidity 15%, standard curing
Reaching certain age obtains modified green cob brick.
The river sand of further preferably above-mentioned comparative example 1 is using the Changjiang river riverside river sand；
Compression strength, rupture strength, water resistance are carried out respectively to the green cob brick that above-described embodiment and comparative example are prepared
And impervious test, it is as follows to have obtained table 1：
The performance test table (one) of the green cob brick of the embodiment of table 1 and comparative example
1~embodiment of embodiment 3,4~embodiment of embodiment 6 are to compare addition polypropylene fibre or short basalt fiber pair
The influence of green cob brick performance, understood with reference to the data of table 1, in addition same ratio, the mine tailing and CHARACTERISTICS OF TAILINGS SAND of same particle size,
Addition polypropylene fibre or short basalt fiber have large effect to durability, the water resistance of green cob brick, and it is short to add basalt
The water resistance outline of fiber green cob brick is better than addition polypropylene fibre green cob brick；In addition, prepared with comparative example 1 by common river sand
Green cob brick and the common green cob brick for being not added with any curing agent are compared, green cob brick prepared by the present invention in mean compressive strength and
Have in the performances such as average rupture strength and increase exponentially.
7~embodiment of embodiment 10 is the influence for comparing the adding proportion and particle diameter of mine tailing to green cob brick performance, with reference to
Table 1 understand, within the specific limits, the addition of mine tailing is more, and particle diameter is more tiny, prepare green cob brick mean compressive strength and
Average rupture strength is better.
Green cob brick standard curing prepared by 1~embodiment of above-described embodiment 67 days, soak 3 days, test Mean Crush is strong
Degree and permeability coefficient, obtain table 2：
The performance test table (two) of the green cob brick of the embodiment of table 2
| Mean compressive strength (MPa) | Averag density (kg/m3) | Permeability coefficient (cm/s) | |
| Embodiment 1 | 12.7 | 1800 | 0.202×10-11 |
| Embodiment 2 | 15.8 | 1850 | 0.189×10-11 |
| Embodiment 3 | 14.2 | 1823 | 0.165×10-11 |
| Embodiment 4 | 14.2 | 1820 | 0.200×10-11 |
| Embodiment 5 | 15.6 | 1845 | 0.175×10-11 |
| Embodiment 6 | 14.9 | 1838 | 0.160×10-11 |
As shown in Table 2, modified green cob brick still possesses 12.7~15.8Mpa compression strength after immersion 3 days, close
Degree remains at 1800kg/m3More than, therefore, green cob brick prepared by the present invention compensate for the technology of existing green cob brick poor durability
Problem；Also known with reference to table 2, the impervious outline of addition polypropylene fibre green cob brick is better than the addition short basalt fiber raw-soil
Brick.
Above example is only optimal citing, and is not the restriction to embodiments of the present invention.Except above-described embodiment
Outside, the present invention also has other embodiment.All technical schemes formed using equivalent substitution or equivalent transformation, all fall within the present invention
It is required that protection domain.
Claims (10)
1. a kind of modified raw soil, is made up of the raw-soil and modifying agent, the mass percent of the raw-soil and modifying agent is 75~80%：
20~25%, it is characterised in that：The modifying agent includes the component of following mass percent：Cement 24.3%~27%, mine tailing
Sand 43.3%~48.5%, mine tailing 9.7%~10.8%, flyash 9.7%~10.8%, the and of ardealite 4.8%~5.4%
Water reducer 2.6%~2.9%.
2. modified raw soil according to claim 1, it is characterised in that：It is 0.2% that the modifying agent, which also includes volume volume,
~0.6% short basalt fiber or polypropylene fibre.
3. modified raw soil according to claim 1 or 2, it is characterised in that：The mine tailing is to carry out powder using CHARACTERISTICS OF TAILINGS SAND
It is 350~450m that mill, which is machined to specific surface area,2/ kg powder.
4. modified raw soil according to claim 3, it is characterised in that：The CHARACTERISTICS OF TAILINGS SAND is rich iron CHARACTERISTICS OF TAILINGS SAND, the richness
The mass percentage content of silica is more than 65% in ferrosilicon CHARACTERISTICS OF TAILINGS SAND.
5. modified raw soil according to claim 4, it is characterised in that：The grain diameter of the CHARACTERISTICS OF TAILINGS SAND be 0.30~
2.36mm。
6. modified raw soil according to claim 1 or 2, it is characterised in that：The water reducer is naphthalene water reducer, the naphthalene
The water-reducing rate of based water reducer is 20~25%, and it is 0.11~0.12 that the naphthalene water reducer, which controls the water-solid ratio of whole system,.
7. modified raw soil according to claim 1 or 2, it is characterised in that：The cement is 42.5 grades of water of normal silicate
Mud.
8. modified raw soil according to claim 1 or 2, it is characterised in that：The ardealite is dihydrate gypsum.
9. the method for green cob brick is prepared using the modified raw soil described in claim 1~8, it is characterised in that：Preparation technology is：
By the raw-soil of corresponding proportion and modifying agent it is well mixed after obtain modified raw soil, modified raw soil is put into brick die, 6~
It is compressing under 10Mpa pressure, progress standard curing disposed within 28~40 days is stripped after 1~3 day, obtains green cob brick.
A kind of 10. green cob brick prepared by method according to claim 9 for preparing green cob brick.
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| CN108929093A (en) * | 2018-07-26 | 2018-12-04 | 合肥伊只门窗有限公司 | A kind of preparation method of ardealite anti-fire door core board |
| CN108929092A (en) * | 2018-07-26 | 2018-12-04 | 合肥伊只门窗有限公司 | A kind of oil resistant freeze thawing resistance anti-fire door core board |
| CN113135724A (en) * | 2021-04-19 | 2021-07-20 | 扬州邗江中科南工建设工程与信息化研究中心 | Negative carbon emission modified raw soil base building block and manufacturing method thereof |
| CN116553878A (en) * | 2023-02-22 | 2023-08-08 | 西安石油大学 | Modified raw soil material formula utilizing cement and iron tailings |
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