CN101519292A - Grey brick mechanically manufactured from lime sludge and construction wastes and method for manufacturing same - Google Patents
Grey brick mechanically manufactured from lime sludge and construction wastes and method for manufacturing same Download PDFInfo
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- CN101519292A CN101519292A CN200910001593A CN200910001593A CN101519292A CN 101519292 A CN101519292 A CN 101519292A CN 200910001593 A CN200910001593 A CN 200910001593A CN 200910001593 A CN200910001593 A CN 200910001593A CN 101519292 A CN101519292 A CN 101519292A
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- blue bricks
- building waste
- lime
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- waste
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
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- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
The invention discloses a gray brick mechanically manufactured from lime sludge and construction wastes and a method for manufacturing the same. The materials for mechanically manufacturing the gray brick comprise the following raw materials in portion by weight: 1,015 to 1,135 portions of construction waste crushed materials, 240 to 290 portions of cement, 810 to 1,010 portions of lime sludge, 60 to 75 portions of gray lime, and 100 to 125 portions of water, wherein the particle size of the construction waste crushed materials is less than 15 millimeters. If necessary, less than 20 portions of fly ash and proper amount of activating agent can be added to the materials. The method for mechanically manufacturing gray brick comprises the following steps: firstly, crushing the construction wastes; secondly, mixing the construction waste crushed materials with the other materials according to the proportions; and thirdly, pressing the mixture by adopting a mechanical method so as to produce the gray brick of the invention. The gray brick and the method for manufacturing the same recycle the sludge and the construction wastes in a reducing, harmless and resource-utilizing mode, and solve the problem that substituting materials and products are hard to find after clay bricks are forbidden to use and the problem of gray brick sources for civilian constructions.
Description
Technical field
The present invention relates to a kind of building masonry material.Specifically, the present invention relates to a kind of lime mud soil and building waste of utilizing as raw material, the building block of adopting the mechanical compaction method to produce with performances such as refusing water, unburned knot.
Background technology
Blue bricks occupies an important position on Chinese architecture history, and many imperial palaces palace, mansion of a prince residence sandbar are all just built with blue bricks.In recent years, the blue bricks building develops to the direction of public demand gradually.Yet because environmental protection requirement, by limit production step by step, China will completely forbid in 2010 and produce clay brick conventional clay agglomerating blue bricks.So just need to produce the needs that a kind of substitute products satisfy residential housing demand and ancient architecture maintenance.
Some technical schemes that proposed in the prior art can solve the problem that common structures are built basically at present, a kind of entire body concrete azulejo is disclosed as Chinese patent literature CN2799720Y, wherein adopt matrix and stone to constitute entire body concrete azulejo, wherein matrix is made up of the mixture of cement and sand, be rectangular body, stone is evenly distributed in the matrix and matrix surface.When manufacturing azulejo stone is evenly inserted matrix, simultaneously can also be in matrix admixture pigment, press forming.Characteristics such as that this kind brick has is firm, texture nature; Anti-skid, wear resistance and weather resistance performance are superior, and color is unified, is difficult for fading.Yet constitute from the material of this brick, its surperficial texture has significantly different with the blue bricks that the weight and the clay of brick body are fired.Particularly because its bonding material adopts cement fully, the weight of the blue bricks that its weight is fired much larger than clay makes that workmen's labour intensity improves greatly when building by laying bricks or stones, and the precision of construction is difficult to grasp, and it is exactly a cement products on the sense organ.
On the other hand, at present along with the transformation and the development in city, building waste and the sewage work mud that is produced of disposing of sewage has become a reluctant problem.The main processing mode in some cities is to carry out landfill, burning or compost at present, these processing modes take a large amount of soils, damage the arable land resource, and atmosphere pollution, heavy metal in the mud is threatening the people's health especially, damage to urban environment, and make troubles to resident living.For properly settling this problem, satisfy resources effective utilization and requirements of green environmental protection, " joint disposal " of building waste is suggested, from the prior art, a kind of main mode of building waste " joint disposal " is carried out fragmentation, screening with building waste exactly, mix with bonding material such as cement and other auxiliary material then, adopt certain mode production mechanism building block again, as the disclosed a kind of wall floor tile of producing with building waste of Chinese patent literature CN1765807A.Yet, in this class prior art, do not consider the weight issue of surperficial texture and brick body yet.The characteristic and the effect that also are different from the sintering blue bricks on its sense organ.And the processing of mud except that burning, compost, be fired into the brick, also do not have better means to solve at present.The mechanically manufactured from lime sludge blue bricks is the another effective measure that solve this type of problem now for this reason.
Summary of the invention
For this reason, technical problem to be solved by this invention is: providing a kind of is the machine-processed blue bricks of raw material with lime mud and building waste, and the brick surface texture of described blue bricks and the brick body weight reaches or near the degree of brick firing.
For solving the problems of the technologies described above, mechanically manufactured from lime sludge building waste blue bricks of the present invention, its formulation contains the raw material of following parts by weight: 1015-1135 part construction waste crushing material, 240-290 part cement, 810-1010 part lime mud soil, steel gray, the 100-125 part water of 60-75 part; The particle diameter of wherein said construction waste crushing material is below 15 millimeters.
In described formulation, also contain 20 parts of flyash below the parts by weight.
Described construction waste crushing material is that the approaching building waste of do as one likes matter forms through broken.
Described construction waste crushing material can be the waste and old concrete broken material.
Described construction waste crushing material is by sintered article basically, constitutes as the broken material of the fragment of broken material, crock and the glass cullet of clay brick etc.
Mud in the described lime mud soil is meant the mud that mud that sewage disposal forms or lake, river, bottom, seabeach form; Lime and mud mix formation lime mud soil according to the part by weight of 1:5-1:10.
For the color that makes described mechanically manufactured from lime sludge building waste blue bricks more approaches the color of the blue bricks that clay fires, the gray paint that can add 0.3-0.6 part parts by weight in described formulation mixes colours.
The invention allows for the manufacture method of above-mentioned machine-processed blue bricks, comprise following processing step:
A. building waste is pulverized, made it become required size particles;
B. the construction waste crushing material after pulverizing is sieved, sorts out, keep particle diameter at the particle below 15 millimeters;
C. the construction waste crushing material after screening is sorted out mixes with cement, steel gray parts by weight by construction waste crushing material 1015-1135 part, cement 240-290 part, lime mud soil 810-1010 part and steel gray 60-75 part;
D. in aforementioned formulation, add entry, make described formulation contain an amount of water;
E. the described formulation that mixes is transported in the machine-processed mould, is pressed into blue bricks then.
Before above-mentioned a step, earlier building waste is classified, just pick up, sieve wherein required building waste material.
In above-mentioned a step, select the building waste material that mainly constitutes by waste and old concrete.
In above-mentioned a step, select mainly by sintered article, as the building waste material of formations such as clay brick, crock and glass cullet.
In above-mentioned c step, the preferred sludge produced by sewage treatment of mud in the described lime mud soil, and mud and lime formed lime mud soil according to 3:1-9:1 mixed.
In above-mentioned c step, can also add following flyash of 20 parts of parts by weight and weight content and be ten thousand/ promoting agent.
After above-mentioned c step, according to the color that described formulation presented, add an amount of pigment and mix colours, make the color of described mechanically manufactured from lime sludge building waste blue bricks more approach the color that clay is fired the blue bricks that forms.
In file of the present invention, term:
Steel gray, be the powder after a kind of lividity natural clay ore deposit fragmentation that constitutes by the graphite that contains impurity, be commonly used to whitewash wall face or ward off stove, also can be used as pigment.
Umber all is meant parts by weight.
Technique scheme of the present invention has the following advantages compared to existing technology,
Because the raw material of lime mud waste and old concrete blue bricks of the present invention is that the broken material of waste and old concrete in employing sludge produced by sewage treatment and the building waste and the building wastes such as broken material of sintered article are starting material, can solve the mud of considerable part and the problem that building waste is handled, adopt mechanical compaction processing simultaneously, avoided the pollution of method for cooking, do not used clay then can avoid the loss in average 60 mu of arable lands whole nation every day air.Pollute, protect environment that quite positive meaning is arranged for reducing.
In formulation of the present invention, be mixed with proportion than light steel gray of cement, play the effect of adjusting the blue bricks product weight, simultaneously steel gray have cohesive force strong, refuse water, be not afraid of performance such as burning, the heat-insulating property of brick body be can increase, degree of compactness and impermeability increased, and owing to himself have greyish black color, has certain effect that mixes colours, and can not fade, guaranteed appearance effect.
In formulation of the present invention, further be mixed with flyash, then increased the concrete reaction, and reduced concrete hydration reaction, prevent concrete cracking; Because the dirty argillous proportion of flyash and lime is far smaller than cement, can alleviate the weight of brick body, increases the degree of compactness and the water repellency of brick body, and reduces production costs.
Employing mechanize is produced, and unburned knot makes the smooth outer surface of brick body, and is attractive in appearance.Have the characteristic and the style of ancient building clay blue bricks, appearance tactile impression is honest, is fit to use in a large number when ancient architecture body of wall and Chinese courtyard house are built.
Blue bricks of the present invention has been exempted the precision work process in application process, can once form as complicated decorative block bodies such as cornice when the mechanize moulding; The starting material that adopted itself have improved the rotproofness of machine-processed blue bricks, weather resistance, and erosion resistance has freeze proof, impervious.Prevent decolouring, peeling, radiationless, ageing-resistant, no light pollution.Different requirements according to design utilize different proportionings, have improved the ultimate compression strength of blue bricks greatly, can reach concrete intensity No. 50～No. 200.
According to actual needs, mechanically manufactured from lime sludge building waste blue bricks of the present invention can be made into various shape and size.Blue bricks of the present invention is built allusion, simple, quiet and tastefully laid out decorative effect, and this product construction effect is good, and cost is reasonable, is to return that Piao returns very, the green building material product of back to nature; Can also utilize blue bricks of the present invention to take to do old mode processing is repaired in the house.
Description of drawings
For the easier quilt of content of the present invention is clearly understood, below according to a particular embodiment of the invention and in conjunction with the accompanying drawings, the present invention is further detailed explanation, wherein
Fig. 1 is the three-dimensional effect diagram of blue bricks of the present invention;
Fig. 2 is a three-dimensional effect diagram of opening the bar blue bricks greatly of the present invention;
Fig. 3 is the three-dimensional effect diagram of ancient ground of the present invention blue bricks;
Fig. 4 is the three-dimensional effect diagram of heavy back blue bricks of the present invention;
Fig. 5 is the three-dimensional effect diagram of city wall blue bricks of the present invention;
Fig. 6 is a three-dimensional effect diagram of taking over a business the eaves blue bricks of the present invention;
Fig. 7 is the three-dimensional effect diagram of mixed commentaries on classics blue bricks of the present invention;
Fig. 8 is the three-dimensional effect diagram of ice tray eaves purlin blue bricks of the present invention;
Fig. 9 is the three-dimensional effect diagram of picture nose blue bricks of the present invention.
Embodiment
As shown in Figure 1, be the machine-processed blue bricks of common brick type of the present invention, its formulation contains the raw material of following parts by weight: 1028 parts of construction waste crushing material, 280 parts of cement, 910 parts of lime mud soil, 67 parts of steel gray and 115 parts of water that are made of sintered article (as the broken material of clay brick, crock and glass cullet fragment etc.); The particle diameter of wherein said construction waste crushing material is below 10 millimeters.
For the color that makes described machine-processed blue bricks more approaches the color of clay brick firing, in described formulation, add 0.5 part of pigment and mix colours.
The manufacture method of the machine-processed blue bricks of present embodiment common brick type comprises:
-earlier building waste is classified, just pick up, sieve the wherein building waste material of sintered article (as the broken material of clay brick, crock and glass cullet fragment etc.);
-building waste is pulverized, make it become required size particles;
-the construction waste crushing material after pulverizing is sieved, sorts out, keep particle diameter at the particle below 10 millimeters;
Construction waste crushing material after-screening is sorted out mixes grating with cement, lime mud soil, the steel gray relation by said ratio;
-according to the color that described formulation presented, add an amount of pigment and mix colours, make the color of described machine-processed blue bricks more approach the color of the blue bricks that clay fires.
-in described formulation, add entry, make described formulation reach above-mentioned water content (it is agglomerating promptly can to write, and the degree promptly pulverized after landing of the height of one meter on distance ground of this group);
-the described formulation that mixes is transported in 115 * 240 * 53 the machine-processed mould, be pressed into blue bricks then.
In the present embodiment, because raw material adopts the building waste material of sintered article (as the broken material of the fragment of broken material, crock and the glass cullet of clay brick etc.), the proportion of its raw material is suitable with the proportion of brick firing, therefore what need to adjust only is the proportion of bonding material, in the present embodiment by cement and steel gray between proportioning solve.Owing to the ultimate compression strength and the brick firing of the blue bricks of the reason present embodiment of material choice are suitable, a little more than No. 100.The making of present embodiment and processing are relatively simple.
Embodiment illustrated in fig. 1 can also have some distortion, directly building waste pulverized as the classification of not carrying out building waste, and then the proportion of its aggregate increases relatively.At this moment, the umber that can reduce raw material reaches 890 parts, and adds the proportion relation that 20 parts of flyash are adjusted formulation in described formulation, to reach or near firing steel gray proportion.
This embodiment is owing to contain the higher composition of intensity in the aggregate, and therefore the intensity of the blue bricks of being produced is higher than the intensity of brick firing, can reach 150-200 number.And the adding of flyash can further improve the surperficial texture of the imitative blue bricks of mechanism.
As shown in Figure 2, be big stripping-cutting machine system blue bricks of the present invention, its formulation contains the raw material of following parts by weight: 1028 parts of construction waste crushing material that are made of sintered article (as the broken material of the fragment of broken material, crock and the glass cullet of clay brick etc.), 260 parts of cement, 910 parts of lime mud soil, 67 parts of steel gray, 20 parts of flyash and 115 parts of water; The particle diameter of wherein said construction waste crushing material is below 15 millimeters.
For the color that makes described machine-processed blue bricks more approaches the color of clay brick firing, in described formulation, add 0.5 part of pigment and mix colours.
The manufacture method of the machine-processed blue bricks of opening bar brick type greatly of present embodiment comprises:
-earlier building waste is classified, just pick up, sieve the building waste material of sintered article wherein (as the broken material of the fragment of broken material, crock and the glass cullet of clay brick etc.);
-building waste is pulverized, make it become required size particles;
-the construction waste crushing material after pulverizing is sieved, sorts out, keep particle diameter at the particle below 15 millimeters;
Construction waste crushing material after-screening is sorted out and cement, steel gray and flyash concern by said ratio and mix grating;
-according to the color that described formulation presented, add an amount of pigment and mix colours, make the color of described machine-processed blue bricks more approach the color of clay brick firing.
-in described formulation, add entry, make described formulation reach above-mentioned water content (it is agglomerating promptly can to write, and the degree promptly pulverized after landing of this group);
-the described formulation that mixes is transported in 130 * 260 * 50 the machine-processed mould, be pressed into blue bricks then.
Equally, because aggregate that present embodiment adopted adopts the building waste material and the lime mud soil of sintered article (as the broken material of the fragment of broken material, crock and the glass cullet of clay brick etc.), therefore the proportion of its aggregate is suitable with the proportion of brick firing, solves the proportion of adjustment bonding material by cement and the proportioning between steel gray.The ultimate compression strength and the brick firing of the blue bricks of the reason present embodiment of selecting owing to aggregate are suitable, are higher than No. 100.
The blue bricks of embodiment illustrated in figures 1 and 2 all is to be mainly used in manual material of construction of building by laying bricks or stones, therefore requires its texture that more approaches brick firing and weight relationships.And the brick type of other kinds often will be by some machinery in construction, and therefore the weight indicator to blue bricks requires more relatively low.
Referring to embodiment illustrated in fig. 3, be the machine-processed blue bricks of a unfertile land brick type of the present invention, its formulation contains the raw material of following parts by weight: 1010 parts of construction waste crushing material that mainly are made of waste and old concrete, 250 parts of cement, 910 parts of lime mud soil, 25 parts of steel gray, 15 parts of flyash and 125 parts of water; The particle diameter of wherein said construction waste crushing material is below 15 millimeters.
For the color that makes described machine-processed blue bricks more approaches the color of clay brick firing, in described formulation, add 0.3 part of pigment and mix colours.
The manufacture method of the machine-processed blue bricks of present embodiment unfertile land brick type comprises:
-earlier building waste is classified, just pick up and select the building waste material that wherein mainly constitutes by waste and old concrete;
-building waste is pulverized, make it become required size particles;
-the construction waste crushing material after pulverizing is sieved, sorts out, keep particle diameter at the particle below 15 millimeters;
Construction waste crushing material after-screening is sorted out mixes grating with cement, lime mud soil, the steel gray relation by said ratio;
-according to the color that described formulation presented, adding an amount of pigment and mix colours, the color that makes described mechanism imitate blue bricks more approaches the color of clay brick firing.
-in described formulation, add entry, make described formulation reach above-mentioned water content (it is agglomerating promptly can to write, and the degree promptly pulverized after landing of this group);
-the described formulation that mixes is transported in 500 * 500 * 60 the machine-processed mould, be pressed into blue or green floor tile then.
In the present embodiment, because aggregate mainly adopts the building waste material that is made of waste and old concrete, the proportion of its aggregate is more great than the ratio of brick firing, therefore, solves the problem of brick body proportion in the present embodiment by the proportioning between cement and building waste material and steel gray and the flyash.The ultimate compression strength of the blue bricks of the reason present embodiment of selecting owing to aggregate is higher than brick firing, reaches No. 200.
The formulation of above-mentioned enforcement kind shown in Figure 3 is transported in 500 * 500 * 80 the machine-processed mould, then suppresses heavy back brick type blue bricks as shown in Figure 4.
Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9 be respectively mechanically manufactured from lime sludge building waste city wall blue bricks of the present invention, take over a business the eaves blue bricks, mix change blue bricks, ice tray eaves purlin blue bricks, as the three-dimensional effect diagram of nose blue bricks, their formulation contains the raw material of following parts by weight: 1010 parts of construction waste crushing material that mainly are made of waste and old concrete, 250 parts of cement, 910 parts of lime mud soil, 75 parts of steel gray, 10 parts of flyash and 100 parts of water; The particle diameter of wherein said construction waste crushing material is below 15 millimeters.
For the color that makes described blue bricks more approaches the color of clay brick firing, in described formulation, add 0.6 part of pigment and mix colours.
The manufacture method of the machine-processed blue bricks of present embodiment: comprise
-earlier building waste is classified, just pick up and select the building waste material that wherein mainly constitutes by concrete;
-building waste is pulverized, make it become required size particles;
-the construction waste crushing material after pulverizing is sieved, sorts out, keep particle diameter at the particle below 15 millimeters;
Construction waste crushing material after-screening is sorted out mixes grating with cement, lime mud soil, the steel gray relation by said ratio;
-according to the color that described formulation presented, add an amount of pigment and mix colours, make the color of described machine-processed blue bricks more approach the color of clay brick firing.
-in described formulation, add entry, make described formulation reach above-mentioned water content (it is agglomerating promptly can to write, and the degree promptly pulverized after landing of this group);
-with the described formulation that mixes be transported to spout, the cloth truck is arranged in the machine-processed mould again, is pressed into blue bricks through main machine and the pressure head of shaking then.
In the present embodiment, because the building waste material that raw material mainly adopts lime mud soil and is made of waste and old concrete, the proportion of its raw material is more about the same than the proportion of brick firing, therefore, solve the problem of brick body weight in the present embodiment by the proportioning between cement and lime mud soil and building waste material and steel gray and the flyash.The ultimate compression strength of the blue bricks of the reason present embodiment of selecting owing to aggregate is higher than brick firing, reaches No. 200.
Obviously, the foregoing description only is for clearly demonstrating example of the present invention, is not the qualification to embodiment of the present invention.For those of ordinary skill in the field, can make multi-form variation or change on the basis of the above description.Here need not also can't give exhaustive to all embodiments.And these still are among protection scope of the present invention by conspicuous variation that the present invention extended out or change.
Claims (12)
1. mechanically manufactured from lime sludge building waste blue bricks, it is characterized in that: its formulation contains the raw material of following parts by weight: 1015-1135 part construction waste crushing material, 240-290 part cement, 810-1010 part lime mud, steel gray, the 100-125 part water of 60-75 part; The particle diameter of wherein said construction waste crushing material is below 15 millimeters.
2. machine-processed blue bricks according to claim 1 is characterized in that: also contain 20 parts of flyash below the parts by weight in described formulation.
3. machine-processed blue bricks according to claim 1 and 2 is characterized in that: described construction waste crushing material is that the approaching building waste of do as one likes matter forms through broken.
4. machine-processed blue bricks according to claim 3 is characterized in that: described construction waste crushing material is the waste and old concrete broken material.
5. machine-processed blue bricks according to claim 3 is characterized in that: described construction waste crushing material is made of the broken material of sintered article.
6. machine-processed blue bricks according to claim 1 and 2 is characterized in that: the gray paint that adds 0.3-0.6 part parts by weight in described formulation mixes colours.
7. the manufacture method of the described mechanically manufactured from lime sludge building waste of claim 1 blue bricks comprises following processing step:
A. building waste is pulverized, made it become required size particles;
B. the construction waste crushing material after pulverizing is sieved, sorts out, keep particle diameter at the particle below 15 millimeters;
C. the construction waste crushing material after screening is sorted out mixes with cement, lime mud soil, steel gray parts by weight by construction waste crushing material 1015-1135 part, cement 240-290 part, lime mud soil 810-1010 part and steel gray 60-75 part;
D. in aforementioned formulation, add entry, make described formulation contain an amount of water;
E. the aforementioned formulation that mixes is transported in the machine-processed mould, is pressed into blue bricks.
8. the manufacture method of mechanically manufactured from lime sludge building waste blue bricks according to claim 7 is characterized in that: before above-mentioned a step, earlier building waste is classified, just pick up, sieve wherein required building waste material.
9. the manufacture method of mechanically manufactured from lime sludge building waste blue bricks according to claim 7 is characterized in that: mud that the lime mud soil in the c step is formed by sewage disposal and lime were according to 3: 1-9: 1 part by weight mixes.
10. the manufacture method of mechanically manufactured from lime sludge building waste blue bricks according to claim 7 is characterized in that: the building waste in a step is a waste and old concrete.
11. the manufacture method according to claim 7 or 8 described mechanically manufactured from lime sludge building waste blue bricks is characterized in that: in above-mentioned c step, can also add the following flyash of 20 parts of parts by weight and the promoting agent of ten thousand/weight content.
12. manufacture method according to claim 7 or 8 described mechanically manufactured from lime sludge building waste blue bricks, it is characterized in that: after above-mentioned c step, according to the color that described formulation presented, add an amount of pigment and mix colours, make the color of described machine-processed blue bricks more approach the color of the blue bricks that clay fires.
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| CN200910001593A CN101519292A (en) | 2009-01-15 | 2009-01-15 | Grey brick mechanically manufactured from lime sludge and construction wastes and method for manufacturing same |
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| CN200910001593A CN101519292A (en) | 2009-01-15 | 2009-01-15 | Grey brick mechanically manufactured from lime sludge and construction wastes and method for manufacturing same |
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2009
- 2009-01-15 CN CN200910001593A patent/CN101519292A/en active Pending
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