CN108516717A - A kind of modified scoria light-weight aggregate and preparation method thereof - Google Patents
A kind of modified scoria light-weight aggregate and preparation method thereof Download PDFInfo
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- CN108516717A CN108516717A CN201810660128.9A CN201810660128A CN108516717A CN 108516717 A CN108516717 A CN 108516717A CN 201810660128 A CN201810660128 A CN 201810660128A CN 108516717 A CN108516717 A CN 108516717A
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- scoria
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- weight
- negative pressure
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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
- 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
- C04B20/10—Coating or impregnating
- C04B20/1003—Non-compositional aspects of the coating or impregnation
- C04B20/1007—Porous or lightweight coatings
-
- 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
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/04—Silica-rich materials; Silicates
- C04B14/14—Minerals of vulcanic origin
- C04B14/16—Minerals of vulcanic origin porous, e.g. pumice
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Civil Engineering (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Road Paving Structures (AREA)
Abstract
The present invention provides a kind of modified scoria light-weight aggregate and preparation method thereof, the useful effect of main property and negative pressure of vacuum method using powdery silica aerogel is effectively filled scoria interconnected pore, blocks, is isolated；The water absorption rate of scoria not only can be effectively reduced, and the excellent heat preservation of silica aerogel, heat-insulated, fire performance can be utilized, further increases heat preservation and the fire protecting performance of scoria light aggregate concrete.
Description
Technical field
The present invention discloses a kind of modified scoria light-weight aggregate and preparation method thereof, is related to a kind of modified scoria light-weight aggregate
And preparation method, belong to building material technical field.
Technical background
With making rapid progress for Building technology, building just develops towards high-rise, large span direction, and normal concrete is certainly
Great disadvantage is also increasingly prominent, and the approach one of solution is to improve the intensity of normal concrete, second is that development and production light-weight aggregate
Concrete.For light aggregate concrete other than the characteristic of lightweight, the performances such as insulation, fire resisting, sound insulation and antidetonation are also general
Logical concrete is incomparable；To building energy conservation environmental requirement ever-increasing 21 century, light aggregate concrete has extensively
Wealthy development prospect.
Light aggregate concrete development in recent years is very fast, and scoria is a kind of resourceful natural light-weight aggregate, volcano
Dreg concrete and slag concrete product, not only specific strength is high：As the light aggregate concrete bulk density of 40 ~ 50MPa can protect
It holds in 1700kg/m3~1900kg/m3, lighter than normal concrete by 1/5 or so.With more heat-insulated, heat preservation, moisture-keeping functions：Volume is close
Degree is 1750kg/m3The thermal coefficient of light aggregate concrete be significantly less than the thermal coefficient of common density concrete, it is more traditional
Solid viscous scholar's brick or normal concrete can save energy about 30% ~ 50%.And fire resistance is good：Refractory ability is the 4 of normal concrete
Times.Under 650 DEG C of high temperature, light aggregate concrete can maintain the 85% of intensity when room temperature, and normal concrete can only maintain 35% ~
75%.Anti-seismic performance, durability, crack resistance simultaneously, anti-alkali-free-effect of gathering materials are superior to normal concrete.
But due to the special connected holes structure of scoria, scoria light aggregate concrete is caused to need to be solved there is many
Certainly the problem of, such as pumpability is poor, the practical apparent density of concrete is more than calculated value after mix, problems are all by analysis
Caused by the porous structure of scoria（Such as Fig. 1）, scoria porous structure, which absorbs water, can lead to collapsing for concrete batching system
Degree of falling loses quickly, and water absorption rate is bigger, and slump-loss is faster, simultaneously because the density contrast of light-weight aggregate and cement mortar
Greatly, easy laminated segregation.But main application advantage places one's entire reliance upon porosity characteristic again, so hole feature, which is effectively ensured, becomes fire
The important research direction of mountain dreg concrete development.So the present invention will provide a kind of modified scoria light-weight aggregate and its preparation side
Method.
Invention content
The present invention provides a kind of modified scoria light-weight aggregates, can be effectively improved the water suction of scoria porous structure, midge
A series of disadvantages, and heat-insulating property is more excellent, has high actual application value.
The invention also discloses a kind of preparation methods of modified scoria light-weight aggregate, mainly with scoria, powdery silicon airsetting
Glue, waterglass, redispersable latex powder, cellulose ether, polyethylene glycol oxide, lignin fibre, dodecyl sodium sulfate, silicon ash and
Water forms.Composition material increases modified material function and effect under ultrasonic negative pressure method, using ultrasonic wave, to be effectively improved fire
The physical property of mountain slag improves slag concrete comprehensive performance.
A kind of modified scoria light-weight aggregate and preparation method thereof of the present invention is made of the raw material of following weight percent
's：60-90 parts of scoria, 1-10 parts of powdery silica aerogel, 5-30 parts of waterglass, 0.5-5 parts of redispersable latex powder, cellulose
0.01-4 parts of ether, 0.01-1 parts of polyethylene glycol oxide, 0.01-3 parts of lignin fibre, 0.01-6 parts of dodecyl sodium sulfate, silicon ash
2-10 parts and 5-30 parts of compositions of water.
1, invention further provides a kind of preparation method of modified scoria light-weight aggregate, the specific steps of the method
It is as follows：
1）Scoria is weighed by weight, and negative pressure ultrasound device is added；
2）Powdery silica aerogel, waterglass, redispersable latex powder, cellulose ether, polyethylene glycol oxide, wooden is weighed by weight
Cellulose fiber, dodecyl sodium sulfate, silicon ash and several composition materials of water are simultaneously uniformly mixed；
3）By step 2）Middle mixing material is added in negative pressure ultrasound device slowly, the condition for keeping negative pressure and ultrasound to be carried out at the same time
Under, stir scoria and mixing material；Stirring at low speed is all added to mixing material, stops mixing 5-15s, then high-speed stirred 60-
The modification scoria of the present invention is obtained after 120s；
4）Wherein step 1）Middle powdery aerogel particles size is between 0.01-0.1mm.
The positive effect of the present invention is：The present invention provides a kind of modified scoria light-weight aggregate and preparation method thereof,
In contain a kind of modified scoria light-weight aggregate.Mainly utilize the property of powdery silica aerogel and having for negative pressure of vacuum method
Effect acts on, and is effectively filled, blocks, is isolated to scoria interconnected pore, not only can effectively reduce the water suction of scoria
Rate, and the excellent heat preservation of silica aerogel, heat-insulated, fire performance can be utilized, further increase scoria light aggregate concrete
Heat preservation and fire protecting performance.
Description of the drawings：
The porous structure of Fig. 1 scoria；
The modified scoria micro-images of Fig. 2.
Specific implementation mode：
Further illustrated the description present invention by following embodiment, is not limit the invention in any way, without departing substantially from this hair
Under the premise of bright technical solution, those of ordinary skill in the art made for the present invention any change easy to implement or
Change is fallen within scope of the presently claimed invention.
Embodiment 1：
1）60 parts of scoria is weighed by weight, and negative pressure ultrasound device is added；
2）2 parts of powdery silica aerogel, 10 parts of waterglass, 1 part of redispersable latex powder, cellulose ether 0.05 are weighed by weight
Part, 0.05 part of polyethylene glycol oxide, 0.1 part of lignin fibre, 0.05 part of dodecyl sodium sulfate, 5 parts of silicon ash and 21.75 parts of water are several
Kind composition material is simultaneously uniformly mixed；
3）By step 2）Middle mixing material is added in negative pressure ultrasound device slowly, the condition for keeping negative pressure and ultrasound to be carried out at the same time
Under, stir scoria and mixing material.Stirring at low speed is all added to mixing material, stops mixing after 5s, then high-speed stirred 60s to obtain the final product
To the modification scoria of the present invention.
4）Wherein step 1）Middle powdery aerogel particles size is between 0.03-0.5mm.
Embodiment 2：
1）60 parts of scoria is weighed by weight, and negative pressure ultrasound device is added；
2）5 parts of powdery silica aerogel, 10 parts of waterglass, 1 part of redispersable latex powder, cellulose ether 0.05 are weighed by weight
Part, 0.05 part of polyethylene glycol oxide, 0.1 part of lignin fibre, 0.05 part of dodecyl sodium sulfate, 5 parts of silicon ash and 18.75 parts of water are several
Kind composition material is simultaneously uniformly mixed；
3）By step 2）Middle mixing material is added in negative pressure ultrasound device slowly, the condition for keeping negative pressure and ultrasound to be carried out at the same time
Under, stir scoria and mixing material.Stirring at low speed is all added to mixing material, stops mixing after 5s, then high-speed stirred 60s to obtain the final product
To the modification scoria of the present invention.
4）Wherein step 1）Middle powdery aerogel particles size is between 0.03-0.5mm.
Embodiment 3：
1）70 parts of scoria is weighed by weight, and negative pressure ultrasound device is added；
2）2 parts of powdery silica aerogel, 10 parts of waterglass, 1 part of redispersable latex powder, cellulose ether 0.05 are weighed by weight
Part, 0.05 part of polyethylene glycol oxide, 0.1 part of lignin fibre, 0.05 part of dodecyl sodium sulfate, 5 parts of silicon ash and 11.75 parts of water are several
Kind composition material is simultaneously uniformly mixed；
3）By step 2）Middle mixing material is added in negative pressure ultrasound device slowly, the condition for keeping negative pressure and ultrasound to be carried out at the same time
Under, stir scoria and mixing material.Stirring at low speed is all added to mixing material, stops mixing after 5s, then high-speed stirred 60s to obtain the final product
To the modification scoria of the present invention.
4）Wherein step 1）Middle powdery aerogel particles size is between 0.03-0.5mm.
Embodiment 4：
1）70 parts of scoria is weighed by weight, and negative pressure ultrasound device is added；
2）5 parts of powdery silica aerogel, 10 parts of waterglass, 1 part of redispersable latex powder, cellulose ether 0.05 are weighed by weight
Part, 0.05 part of polyethylene glycol oxide, 0.1 part of lignin fibre, 0.05 part of dodecyl sodium sulfate, 5 parts of silicon ash and 8.75 parts of water are several
Kind composition material is simultaneously uniformly mixed；
3）By step 2）Middle mixing material is added in negative pressure ultrasound device slowly, the condition for keeping negative pressure and ultrasound to be carried out at the same time
Under, stir scoria and mixing material.Stirring at low speed is all added to mixing material, stops mixing after 5s, then high-speed stirred 60s to obtain the final product
To the modification scoria of the present invention.
4）Wherein step 1）Middle powdery aerogel particles size is between 0.03-0.5mm.
Test example
To the modification scoria light-weight aggregate performance prepared by embodiment 1-4 according to《Cobble for building, rubble》GB/T14685-
2011,《Code for Acceptance of Construction Quality of Building Energy-saving Engineering》GB50411-2007 is carried out, test result such as table 1, modified volcano
Slag micro-image such as Fig. 2.
The modification scoria light-weight aggregate the performance test results of 1 each embodiment of table
The experimental data of table 1 shows that the modification scoria light-weight aggregate of embodiment 1 to embodiment 4 increases in bulk density unobvious
Under conditions of, there is apparent decline, and 4 thermal coefficient of embodiment in modified scoria thermal coefficient and water absorption rate
Decline 49.1%, water absorption rate declines 75.3%.So the present invention obtains a kind of modification scoria that function and effect are very excellent and gently collects
Material and its method of modifying.
Claims (2)
1. a kind of modified scoria light-weight aggregate, it is characterised in that made of the raw material of following weight percent：
60-90 parts of scoria, 1-10 parts of powdery silica aerogel, 5-30 parts of waterglass, 0.5-5 parts of redispersable latex powder, fiber
Plain ether 0.01-4 parts, 0.01-1 parts of polyethylene glycol oxide, 0.01-3 parts of lignin fibre, 0.01-6 parts of dodecyl sodium sulfate, silicon
Grey 2-10 parts and 5-30 parts of compositions of water.
2. a kind of preparation method of modified scoria light-weight aggregate as described in claim 1, is as follows：
1）Scoria is weighed by weight, and negative pressure ultrasound device is added；
2）Powdery silica aerogel, waterglass, redispersable latex powder, cellulose ether, polyethylene glycol oxide, wooden is weighed by weight
Cellulose fiber, dodecyl sodium sulfate, silicon ash and several composition materials of water are simultaneously uniformly mixed；
3）By step 2）Middle mixing material is added in negative pressure ultrasound device slowly, the condition for keeping negative pressure and ultrasound to be carried out at the same time
Under, stir scoria and mixing material；Stirring at low speed is all added to mixing material, stops mixing 5-15s, then high-speed stirred 60-
After 120s i.e.；
The powdery aerogel particles size is between 0.01-0.1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810660128.9A CN108516717B (en) | 2018-06-25 | 2018-06-25 | Modified volcanic cinders light aggregate and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810660128.9A CN108516717B (en) | 2018-06-25 | 2018-06-25 | Modified volcanic cinders light aggregate and preparation method thereof |
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| Publication Number | Publication Date |
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| CN108516717A true CN108516717A (en) | 2018-09-11 |
| CN108516717B CN108516717B (en) | 2021-01-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810660128.9A Active CN108516717B (en) | 2018-06-25 | 2018-06-25 | Modified volcanic cinders light aggregate and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021219847A1 (en) * | 2020-04-30 | 2021-11-04 | Interbran Raw Materials Gmbh | Method for producing heat-insulating composite particles, composite particles and use thereof |
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|---|---|---|---|---|
| US20140264140A1 (en) * | 2013-03-14 | 2014-09-18 | The Catholic University Of America | High-strength geopolymer composite cellular concrete |
| CN104628413A (en) * | 2015-01-14 | 2015-05-20 | 安徽宝翔建设集团有限责任公司 | Active calcium silicate-containing high-strength aerated brick and preparation method thereof |
| CN106552594A (en) * | 2016-12-07 | 2017-04-05 | 郑州源冉生物技术有限公司 | A kind of heavy metal composite adsorbing material based on volcanic ash and preparation method thereof |
| CN107282033A (en) * | 2017-06-28 | 2017-10-24 | 郑善 | It is a kind of to be used for photochemical catalyst that air V OC is handled and preparation method thereof |
| CN107523166A (en) * | 2017-09-02 | 2017-12-29 | 胡冬冬 | A kind of volcanic ash water proof fire retardant gasket coating and preparation method thereof |
-
2018
- 2018-06-25 CN CN201810660128.9A patent/CN108516717B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140264140A1 (en) * | 2013-03-14 | 2014-09-18 | The Catholic University Of America | High-strength geopolymer composite cellular concrete |
| CN104628413A (en) * | 2015-01-14 | 2015-05-20 | 安徽宝翔建设集团有限责任公司 | Active calcium silicate-containing high-strength aerated brick and preparation method thereof |
| CN106552594A (en) * | 2016-12-07 | 2017-04-05 | 郑州源冉生物技术有限公司 | A kind of heavy metal composite adsorbing material based on volcanic ash and preparation method thereof |
| CN107282033A (en) * | 2017-06-28 | 2017-10-24 | 郑善 | It is a kind of to be used for photochemical catalyst that air V OC is handled and preparation method thereof |
| CN107523166A (en) * | 2017-09-02 | 2017-12-29 | 胡冬冬 | A kind of volcanic ash water proof fire retardant gasket coating and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021219847A1 (en) * | 2020-04-30 | 2021-11-04 | Interbran Raw Materials Gmbh | Method for producing heat-insulating composite particles, composite particles and use thereof |
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Effective date of registration: 20220829 Address after: Room 2105B, Block A3, Mingyu Plaza, Ecological Street, Nanguan District, Changchun City, Jilin Province, 130000 Patentee after: Changchun Changchi Environmental Protection Technology Co.,Ltd. Address before: 130118 No. 5088 Xincheng Street, Changchun City, Jilin Province Patentee before: JILIN JIANZHU University |
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