CN106187038A - Heat-conducting type zeolite quartz sand ceramic fine bead is prepared porous and is catchmented the method for sponge brick - Google Patents
Heat-conducting type zeolite quartz sand ceramic fine bead is prepared porous and is catchmented the method for sponge brick Download PDFInfo
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- CN106187038A CN106187038A CN201610518609.7A CN201610518609A CN106187038A CN 106187038 A CN106187038 A CN 106187038A CN 201610518609 A CN201610518609 A CN 201610518609A CN 106187038 A CN106187038 A CN 106187038A
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- porous
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- quartz sand
- zeolite
- catchmented
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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
- C04B28/24—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 alkyl, ammonium or metal silicates; containing silica sols
- C04B28/26—Silicates of the alkali metals
-
- 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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/02—Agglomerated materials, e.g. artificial aggregates
- C04B18/027—Lightweight 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
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/02—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by adding chemical blowing agents
-
- 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
- C04B38/08—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by adding porous substances
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C11/00—Details of pavings
- E01C11/22—Gutters; Kerbs ; Surface drainage of streets, roads or like traffic areas
- E01C11/224—Surface drainage of streets
- E01C11/225—Paving specially adapted for through-the-surfacing drainage, e.g. perforated, porous; Preformed paving elements comprising, or adapted to form, passageways for carrying off drainage
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C5/00—Pavings made of prefabricated single units
- E01C5/04—Pavings made of prefabricated single units made of bricks
-
- 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
- C04B2111/00284—Materials permeable to liquids
-
- 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
- C04B2111/00439—Physico-chemical properties of the materials not provided for elsewhere in C04B2111/00
- C04B2111/00465—Heat conducting 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/40—Porous or lightweight materials
Abstract
nullThe present invention provides heat-conducting type zeolite quartz sand ceramic fine bead to prepare porous to catchment the method for sponge brick，Comprise the following steps: porous is catchmented the dispensing of sponge brick: cement 15～20wt%、Particle diameter is 100～250 m zeolite quartz sand perforate hollow ceramic microspheres 60～75wt%、The sodium silicate 5～15wt% of modulus 3.2～3.5、The flyash 3～10wt% of loss on ignition 1.1% and polyvinyl alcohol High hydrophilous resin fiber 0.5～5.0wt% proportion sample mix homogeneously，Compound is sized mixing with the ratio of mud of 0.5～0.7，Add the aluminium powder cream that compound gross weight is 0.2～1.0%，Aluminium powder cream hydration reaction generates bubble，Form porous and expand the serosity of water suction，The water suction serosity that expands of preparation is stirred in the die trial pouring sponge brick press into，Through striking off、Compacting、The demoulding、Dry，Make porous to catchment sponge brick.
Description
Technical field
The present invention relates to heat-conducting type zeolite quartz sand ceramic fine bead prepare porous and catchment the method for sponge brick, belong to material skill
Art is led.
Background technology
Due to EI Nino and La Nina Phenomenon, there is extreme change in the weather of China, and rainfall distributed pole is uneven, south
North drought and waterlogging are uneven, and in same area, in 1 year, rainfall is the most unequal, and hydropenia has restricted expanding economy and the people
Life, the existing precipitation of Appropriate application, road surface, community, road, the effective precipitation in public leisure square are rationally collected, store,
Utilize, alleviate the use water in drought and water shortage season, significant.
Summary of the invention
Zeolite quartz sand cenosphere is as base material, and quartz sand is high temperature resistant, hardness is high, wear-resisting, thermal coefficient of expansion is little, wear-resisting
Performance is good, and sized zeolite particles more small specific surface is long-pending the biggest, and absorbability is the strongest, and zeolite can adsorb the ammoniacal nitrogen in water, Organic substance
And heavy metal ion, also there is ion exchange and the performance of acidproof heat-proof, the pH value of regulation water, it is possible to by sponge brick surface
Being thermally conducted in soil, using sodium silicate as binding agent, cement is that the porous sponge brick that catchments increases mechanical strength and cementation,
The resin fibre of flyash and the water suction of polyvinyl alcohol height is strong water absorbent, uses dilatant slurry, reduces the density of serosity, makes
A catchment face of sponge brick of porous is dovetail channel-shaped, and the porous moisture that sponge brick absorbs that catchments enters dovetail groove, by gravity
Effect flows into collector pipe again, and the collector pipe sponge brick that porous catchmented links together, in rainwater catchment to collecting-tank.
Its technical scheme is: heat-conducting type zeolite quartz sand ceramic fine bead is prepared porous and catchmented the method for sponge brick, the first step,
Porous is catchmented the dispensing of sponge brick: cement 15～20wt%, particle diameter are 100～250 m zeolite quartz sand perforate hollow ceramic microspheres
60～75wt%, the sodium silicate 5～15wt% of modulus 3.2～3.5, the flyash 3～10wt% of loss on ignition 1.1% and polyvinyl alcohol
High hydrophilous resin fiber 0.5～5.0wt%, the percentage by weight sum of above each component is 100%；
Second step, porous catchment sponge brick expand water suction serosity preparation: by the first step percentage by weight sample, first by particle diameter
Being that 100～250 m zeolite quartz sand perforate hollow ceramic microspheres are put in feed bin, elevator send into distributing device, distributing device will
Zeolite quartz sand perforate hollow ceramic microspheres is evenly distributed on governing belt balance, and spray thrower is by the sodium silicate of modulus 3.2～3.5
Uniformly being sprayed at the outer surface of zeolite quartz sand perforate hollow ceramic microspheres, zeolite quartz sand perforate hollow ceramic microspheres is with speed governing
Belt conveyer scale enters in internal coiling drum agitation device, and the outer surface making each zeolite quartz sand perforate hollow ceramic microspheres is the most attached
Sodium silicate, sodium silicate is inorganic bond, is hydrophilic, and cohesive force is strong, intensity is higher, acid resistance, heat-resist, hydrophilic
Performance does not affect caking property, compound be cement 15～20wt%, particle diameter be 100～250 m zeolite quartz sand perforate hollow ceramics
Microballon 60～75wt%, the sodium silicate 5～15wt% of modulus 3.2～3.5, the flyash 3～10wt% of loss on ignition 1.1% and poly-second
Enol High hydrophilous resin fiber 0.5～5.0wt%, then compound is sized mixing with the ratio of mud of 0.5～0.7, ash is compound,
Rear addition compound gross weight is the aluminium powder cream of 0.2～1.0%, and hydration reaction generates bubble, forms porous and expands the slurry of water suction
Liquid, reduces the weight of sponge brick, and polyvinyl alcohol High hydrophilous resin fiber has extremely strong water absorption, the sponge brick resistance to compression after water suction
Intensity is constant；
3rd step, heat-conducting type porous are catchmented the preparation of sponge brick: the expansion water suction serosity prepared by second step stirs and pours into
In the die trial of sponge brick press, by 1.2～2.0:1 volume ratio compactings, ratio 1.2～2.0 is the volume before compacting, ratio 1
For the volume after compacting, through striking off, suppressing, the demoulding, drying, the porous made is catchmented sponge brick, and porous is catchmented the one of sponge brick
Individual face is dovetail channel-shaped, and the porous moisture that sponge brick absorbs that catchments enters in dovetail groove, and collector pipe embeds in dovetail groove, collector pipe
The a part of arc surface embedded in dovetail groove is opening shape, and another part arc surface is closed, and rainwater catchments sea through porous
Collecting of continuous brick, entering in dovetail groove, flowed into collector pipe again by the effect of gravity, single porous is catchmented sponge brick even by collector pipe
Being connected together, the rainwater that collector pipe collects enters in centralized pool.
The preparation of zeolite quartz sand perforate hollow ceramic microspheres: first by particle diameter 80～200 m zeolite, 200～400 m quartz
Sand stirs by weight 70～85:15～30 compounds, and the percentage by weight sum of two kinds of components is 100%, and compound is pressed
The ratio of mud of 0.5～0.7 is sized mixing, and ash becomes, for zeolite, the compound being grouped into, through centrifugal rotation high velocity spray with quartz sand two kinds
Penetrate formation microballon, then through 800～950 DEG C of expansions, 1000～1500 DEG C fire, quickly cool down, form wall thickness 50～100 m, grain
The zeolite quartz sand perforate hollow ceramic microspheres of footpath 100～250 m, through high-temperature firing, defines the zeolite quartz sand of modification
Composite ceramics resistance to compression microballon, the component of material is different, and the chemical property of modified material is the most different, and quartz sand is high temperature resistant, hardness
High, wear-resisting, thermal coefficient of expansion is little, anti-wear performance good, sized zeolite particles more small specific surface is long-pending the biggest, and absorbability is the strongest, zeolite energy
Enough ammoniacal nitrogen, Organic substance and the heavy metal ion in absorption water, also has ion exchange and the performance of acidproof heat-proof, regulates water
PH value, it is possible to by being thermally conducted in soil of sponge brick surface.
The modulus of sodium silicate is most important, and when modulus is more than 3.5, along with the increase of modulus, sodium silicate is hardening to become fragile, viscous
Knot property is deteriorated, and when modulus is less than 3.2, caking property declines.
Flyash is strong water absorbent, through high temperature sintering, has higher activity.
A rainwater part for accumulation is pooled in collecting-tank by the porous sponge brick that catchments by collector pipe, and another part penetrates into
In soil, increasing soil water content, in summer high-temperature season, the heat on surface can also be transmitted to by the porous sponge brick that catchments
In soil, reducing the temperature on sponge tile floor surface, the thermal capacity of water is big, and can absorb heat also can heat release.
The present invention has the following advantages.
1, preparation Materials Inorganic environment-friendly materials used by sponge brick, do not result in harm, the recyclable energy of sponge brick to environment
It is used for multiple times.
2, the resin fibre of preparation sponge brick flyash and the water suction of polyvinyl alcohol height is strong water absorbent, can absorb sponge brick table
The moisture in face enters internal, when reaching some, is fallen to entering in collector pipe by the effect of gravity.
3, in compound, add aluminium powder cream, form the serosity that porous expands, reduce the density of serosity.
4, zeolite can adsorb the ammoniacal nitrogen in water, Organic substance and heavy metal ion, also has ion exchange with acidproof resistance to
The performance of heat, the pH value of regulation water, it is possible to by being thermally conducted in soil of sponge brick surface.
Accompanying drawing explanation
Fig. 1 is the axle geodesic structure schematic diagram of the sea brick of the embodiment of the present invention.
Fig. 2 is the end TV structure schematic diagram of the sea brick of the embodiment of the present invention.
Fig. 3 is the structural representation that the monolithic sponge brick of the embodiment of the present invention is linked together by collector pipe.
Wherein in figure 1, sponge brick 2, dovetail groove 3, collector pipe.
Detailed description of the invention
Embodiment.
In embodiment as shown in Figures 1 to 3, heat-conducting type zeolite quartz sand ceramic fine bead is prepared porous and is catchmented sponge brick
Method, the first step, the preparation of zeolite quartz sand perforate hollow ceramic microspheres: first particle diameter 100 m zeolite, 300 m quartz sands are pressed
Weight ratio 85:15 compound stirs, and compound is sized mixing by the ratio of mud of 0.6, is formed micro-through centrifugal rotation high velocity jet
Pearl, then through 860 DEG C of expansions, 1180 DEG C of high-temperature firings, quickly cool down, form wall thickness 80 m, particle diameter is the zeolite quartz sand of 250 m
Perforate hollow ceramic microspheres.
Second step, porous are catchmented the dispensing of sponge brick: take cement 15wt%, particle diameter is that 250 m zeolite quartz sand perforates are empty
Heart ceramic fine bead 64wt%, the sodium silicate 13wt% of modulus 3.3, the flyash 4.5wt% of loss on ignition 1.1%, polyvinyl alcohol height absorb water
Resin fibre 3.5wt%.
3rd step, porous catchment sponge brick expand water suction serosity preparation: by the first step percentage by weight sample, first will
Particle diameter is that 250 m zeolite quartz sand perforate hollow ceramic microspheres are put in feed bin, elevator send into distributing device, and distributing device will boiling
Stone quartz sand perforate hollow ceramic microspheres is evenly distributed on governing belt balance, and the sodium silicate of modulus 3.3 is uniformly sprayed by spray thrower
It is sprinkled upon the outer surface of zeolite quartz sand perforate hollow ceramic microspheres, enters internal coiling drum agitation device with governing belt balance, will be mixed
Closing material to size mixing with the ratio of mud of 0.55, add the aluminium powder cream that compound gross weight is 0.5%, hydration reaction generates bubble, is formed
Porous expands the serosity of water suction, reduces the weight of sponge brick, and polyvinyl alcohol High hydrophilous resin fiber has extremely strong water absorption, inhales
Sponge brick comprcssive strength after water is constant, and zeolite has adsorptivity, it is possible to absorption water in ammoniacal nitrogen, Organic substance and heavy metal from
Son, also has ion exchange and the performance of acidproof heat-proof, the pH value of regulation water, it is possible to sponge brick surface is thermally conducted to soil
In earth.
4th step, absorbent-type porous are catchmented the preparation of sponge brick: the expansion water suction serosity prepared by second step stirs
Pour in the die trial of sponge brick press, suppress by the volume ratio of 1.8:1, through striking off, suppressing, the demoulding, dry, make porous
Catchment sponge brick 1, and a catchment face of sponge brick 1 of porous is dovetail groove 2 shape, and the porous moisture that sponge brick 1 absorbs that catchments enters
In dovetail groove 2, being installed with collector pipe 3 in dovetail groove 2, rainwater catchments the collecting of sponge brick 1 through porous, enters dovetail groove 2
In, being flowed into collector pipe 3 again by the effect of gravity, the collector pipe 3 sponge brick 1 that single porous catchmented links together, and collector pipe 3 converges
The rainwater of collection enters in collecting-tank, through precipitation, filters, reuses.
The above, be only presently preferred embodiments of the present invention, is not the restriction that the present invention makees other form, appoints
What those skilled in the art changed possibly also with the technology contents of the disclosure above or be modified as equivalent variations etc.
Effect embodiment, every without departing from technical solution of the present invention content, according to the technical spirit of type of the present invention, above example is made
Any simple modification, equivalent variations and remodeling, still fall within the protection domain of type technical scheme of the present invention.
Claims (1)
1. heat-conducting type zeolite quartz sand ceramic fine bead is prepared porous and is catchmented the method for sponge brick, comprises the following steps:
The first step, porous are catchmented the dispensing of sponge brick: cement 15～20wt%, particle diameter are 100～250 m zeolite quartz sand perforates
Hollow ceramic microspheres 60～75wt%, the sodium silicate 5～15wt% of modulus 3.2～3.5, the flyash 3 of loss on ignition 1.1%～
10wt% and polyvinyl alcohol High hydrophilous resin fiber 0.5～5.0wt%, the percentage by weight sum of above each component is 100%；
Second step, porous catchment sponge brick expand water suction serosity preparation: by the first step percentage by weight sample, first by particle diameter
Being that 100～250 m zeolite quartz sand perforate hollow ceramic microspheres are put in feed bin, elevator send into distributing device, distributing device will
Zeolite quartz sand perforate hollow ceramic microspheres is evenly distributed on governing belt balance, and spray thrower is by the sodium silicate of modulus 3.2～3.5
Uniformly being sprayed at the outer surface of zeolite quartz sand perforate hollow ceramic microspheres, zeolite quartz sand perforate hollow ceramic microspheres is with speed governing
Belt conveyer scale stirs in entering internal coiling drum agitation device, then is sized mixing with the ratio of mud of 0.5～0.7 by compound, finally adds
Enter compound gross weight be 0.2～1.0% aluminium powder cream stir, aluminium powder cream hydration reaction generate bubble, formed porous expand
The serosity of water suction；
3rd step, heat-conducting type porous are catchmented the preparation of sponge brick: the expansion water suction serosity prepared by second step stirs and pours into
In the die trial of sponge brick press, through striking off, suppressing, the demoulding, drying, make porous and catchment sponge brick (1), porous is catchmented sponge
One face of brick (1) is dovetail groove (2) shape, and collector pipe (3) embeds in dovetail groove (2), and collector pipe (3) embeds in dovetail groove (2)
A part of arc surface be opening shape, another part arc surface is closed, and rainwater catchments through porous the remittance of sponge brick (1)
Collection, enters in dovetail groove (2), is entered collector pipe (3) by the effect of gravity, and single porous is catchmented sponge brick (1) by collector pipe (3)
Linking together, the rainwater that collector pipe (3) collects enters in collecting-tank.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610518609.7A CN106187038B (en) | 2016-07-05 | 2016-07-05 | The method that heat-conducting type zeolite quartz sand ceramic fine bead prepares the porous sponge brick that catchments |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610518609.7A CN106187038B (en) | 2016-07-05 | 2016-07-05 | The method that heat-conducting type zeolite quartz sand ceramic fine bead prepares the porous sponge brick that catchments |
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| CN106187038A true CN106187038A (en) | 2016-12-07 |
| CN106187038B CN106187038B (en) | 2018-04-06 |
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| CN201610518609.7A Expired - Fee Related CN106187038B (en) | 2016-07-05 | 2016-07-05 | The method that heat-conducting type zeolite quartz sand ceramic fine bead prepares the porous sponge brick that catchments |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109806636A (en) * | 2019-04-01 | 2019-05-28 | 安徽亚井雨水利用科技有限公司 | A kind of method for the preparation method and its purifying rainwater that the filter of brick pollutant is wrapped |
Citations (5)
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|---|---|---|---|---|
| DE19702254A1 (en) * | 1997-01-23 | 1998-07-30 | Hermsdorfer Inst Tech Keramik | Highly porous moulding especially light construction block |
| US20100133166A1 (en) * | 2006-09-30 | 2010-06-03 | Beijing Rechsand Science & Technology Group Co., L | Composite water permeable brick and composition for producing the same |
| CN101725208A (en) * | 2009-11-27 | 2010-06-09 | 岳建伟 | Heat-preservation and heat-insulation crack-resisting brick made from modified vitrified micro beads |
| CN103641386A (en) * | 2013-11-08 | 2014-03-19 | 许炜 | Inorganic insulation mortar for building lightweight insulation brick |
| CN103992091A (en) * | 2014-04-16 | 2014-08-20 | 马鞍山豹龙新型建材有限公司 | Light weight and high strength aerated brick and making method thereof |
-
2016
- 2016-07-05 CN CN201610518609.7A patent/CN106187038B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19702254A1 (en) * | 1997-01-23 | 1998-07-30 | Hermsdorfer Inst Tech Keramik | Highly porous moulding especially light construction block |
| US20100133166A1 (en) * | 2006-09-30 | 2010-06-03 | Beijing Rechsand Science & Technology Group Co., L | Composite water permeable brick and composition for producing the same |
| CN101725208A (en) * | 2009-11-27 | 2010-06-09 | 岳建伟 | Heat-preservation and heat-insulation crack-resisting brick made from modified vitrified micro beads |
| CN103641386A (en) * | 2013-11-08 | 2014-03-19 | 许炜 | Inorganic insulation mortar for building lightweight insulation brick |
| CN103992091A (en) * | 2014-04-16 | 2014-08-20 | 马鞍山豹龙新型建材有限公司 | Light weight and high strength aerated brick and making method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109806636A (en) * | 2019-04-01 | 2019-05-28 | 安徽亚井雨水利用科技有限公司 | A kind of method for the preparation method and its purifying rainwater that the filter of brick pollutant is wrapped |
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| CN106187038B (en) | 2018-04-06 |
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