CN110156406A - Utilize the method for discarded sintering shale brick powder production brick powder concrete - Google Patents

Utilize the method for discarded sintering shale brick powder production brick powder concrete Download PDF

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Publication number
CN110156406A
CN110156406A CN201910571872.6A CN201910571872A CN110156406A CN 110156406 A CN110156406 A CN 110156406A CN 201910571872 A CN201910571872 A CN 201910571872A CN 110156406 A CN110156406 A CN 110156406A
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China
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brick powder
weight
parts
concrete
discarded
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CN110156406B (en
Inventor
黄榜彪
刘灏
黄秉章
李晓
谢伟标
王俊云
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Guangxi University of Science and Technology
Lushan College of Guangxi University of Science and Technology
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Guangxi University of Science and Technology
Lushan College of Guangxi University of Science and Technology
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    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02Compositions 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
    • C04B28/04Portland cements
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/50Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/91Use of waste materials as fillers for mortars or concrete

Abstract

The present invention includes the following steps: that (1) cleans using the method for discarded sintering shale brick powder production brick powder concrete;(2) it is crushed, is dried;(3) it grinds, sieve, drying process obtains discarded sintering shale brick powder;(4) according to parts by weight, raw material used: cement, middle sand, stone, water, discarded sintering shale brick powder, antifungin, zirconium oxide, hydroxypropyl methyl cellulose, bentonite, mica are weighed;(5) each raw material is subjected to oscillation using 100-200 hertz of ultrasonic wave and stirs to get mixed slurry;(6) type is made in mixed slurry.Product advantage of the invention is: is made after powder after partially replacing cement using sintering shale brick this waste and produces brick powder concrete, and by finding that its overall performance effectively improves after comparing with normal concrete.

Description

Utilize the method for discarded sintering shale brick powder production brick powder concrete
Technical field
The present invention relates to technical field of concrete, and in particular to utilizes discarded sintering shale brick powder production brick powder concrete Method.
Background technique
Concrete is one of the basic material for being widely used in civil engineering industry.According to the statistics of State Statistics Bureau, China Commerical ready-mixed concrete yield in 2016 is up to 179200 ten thousand steres, increases by 7.4%, improves 5.4 percentage points on year-on-year basis.With warp The high speed development of Ji, the application of concrete are more next extensively.China has old-fashioned building to be removed every day, while adjoint New building emerges.So a large amount of building castoff will be generated daily.Discarded sintering shale brick accounts for building castoff A big chunk, while the manufacturer of shale brick also produces largely that discarded brick, these bricks are not all handled reasonably Mode, it has also become one of the important pollution of environment and land occupation resource.So these discarded sintering shale bricks have to look for To reasonable and recycling processing mode.
Due to Guangxi shale rich reserves, so the sintering shale brick abundance of this area, use are extensive.It is special Region feature make sintering shale brick become Guangxi this area specialty industries.Once had experts point out that " this is without rubbish in the world, Only misplace the resource of position ".With the fast development of economy and city, Development of China's Urbanization is accelerated, a large amount of with having daily Building be removed, new building plans are born, and the update of building creates largely discarded sintering shale brick.Together When, the daily sintering of brick field is not perfectly, always to have the underproof brick body of many sintering yet.Combined cause results in Largely discarded sintering shale brick.For discarded sintering shale brick, the processing mode of Guangxi District is or stacks with looking at present, Discarded brick transport generates a large amount of dust on the volume route of transport on a large scale.For the landfill road surface of small size.Not yet There is unified reasonable recycling treatment mode.And discarded sintering shale brick belongs to siliceous property raw material, with the crystalline substance after grinding Mutually activity, unreasonable processing mode, undoubtedly to the high wastage of resource, this is for china natural resources shortage, sustainable green The tactful grave fault of development.But systematicness not yet is carried out to the recycling treatment of discarded sintering shale brick always both at home and abroad at present Research.
In summary, it is seen that the resource utilization and the energy-saving of cement industry of discarded sintering shale brick have been compeled in eyebrow Eyelash.
Summary of the invention
The purpose of the present invention is to solve the above problems of the existing technology, provide a kind of utilize and discard sintering shale The method of brick powder production brick powder concrete.The present invention being capable of the discarded sintering shale brick powder substitution part of cement life of effective recycling Brick powder concrete is produced, by finding that the overall performance of brick powder concrete is significantly increased after comparing with normal concrete, to reach To the purpose for improving its construction quality, reduce the production due to cement and the problem of environmental pollution that generates, solve in city due to Associated contamination bring environmental problem, emerging industry undoubtedly increase the job of industry, generate industry chain (supply chain) effect, band The development of dynamic relevant industries, goes to prepare construction material, in the processing for solving the problems, such as waste using the recycling of waste On the basis of, turn waste into wealth, protect environment, has saved resource.
In order to achieve the above object, technical scheme is as follows:
Using the method for discarded sintering shale brick powder production brick powder concrete, include the following steps:
(1) discarded sintering shale brick is recycled, using manually being hammered, being tentatively crushed, sorting, removes discarded burn Tie the impurity of shale brick;
(2) the discarded sintering shale brick after removal of impurities is crushed using jaw crusher, is dried after broken;
(3) broken discarded sintering shale brick is subjected to fineness grinding, vibrating sieving machine is sieved, is dried with baking oven Processing obtains discarded sintering shale brick powder, and the fineness of the discarded sintering shale brick powder is 0.08-0.15mm;
(4) according to parts by weight, it is as follows that raw material used are weighed: cement 359-445 parts by weight, middle sand 600-620 weight Measure part, stone 1100-1185 parts by weight, water 190-210 parts by weight, discarded sintering shale brick powder 24-96 parts by weight, antifungin 3-5 parts by weight, zirconium oxide 3-5 parts by weight, hydroxypropyl methyl cellulose 3-5 parts by weight, bentonite 4-5 parts by weight, mica 4-5 Parts by weight;
(5) by cement, middle sand, stone, water, discarded sintering shale brick powder, antifungin, zirconium oxide, hydroxypropyl methyl fiber The each raw material mixing of element, bentonite, mica, carries out oscillation using 100-200 hertz of ultrasonic waves and stirs to get mixed slurry;
(6) by mixed slurry pour into molding it is in-molded, brick powder concrete product can be obtained.
Further, the chemical composition of the sintering shale brick powder is as follows by mass percentage: SiO254.35- 55.48%; Fe2O310.21-11.82%;Al2O314.22-15.31%;CaO2.10-2.52%;MgO1.00-1.20%, Surplus is other impurities.
Further, the partial size of the stone is 18-22mm.
Further, the cement is ordinary portland cement, strength grade 42.5MPa.
Further, the ratio of mud of the mixed slurry is 0.42-0.45.
Further, according to parts by weight, it is as follows that raw material used are weighed: 400 parts by weight of cement, 610 weight of middle sand Part, 1135 parts by weight of stone, 200 parts by weight of water, discarded 48 parts by weight of sintering shale brick powder, 4 parts by weight of antifungin, zirconium oxide 4 Parts by weight, 4 parts by weight of hydroxypropyl methyl cellulose, 4.5 parts by weight of bentonite, 4.5 parts by weight of mica.
There is the prior art to compare, the device have the advantages that as follows:
The present invention can effective recycling discard sintering shale brick produce brick powder concrete, the performance energy of brick powder concrete It is improved, to achieve the purpose that improve its construction quality, the environment for reducing the production due to cement and generating is dirty Dye problem solves in city due to associated contamination bring environmental problem, and emerging industry undoubtedly increases the employment hilllock of industry Position generates industry chain (supply chain) effect, drives the development of relevant industries, go to prepare construction material using the recycling of waste, On the basis of the processing for solving the problems, such as waste, turn waste into wealth, protect environment, has saved resource.The present invention is burnt discarded Knot shale brick, which is used to prepare eco-cement, realizes resource harmless treatment to discarded sintering shale brick, and it is useless to substantially improve China Abandon the status of sintering shale brick cumulative rises year by year.
The present invention carries out physical property inspection to production concrete, the results showed that by cement by discarding sintering shale brick powder Volume can enhance cubic compressive strength, cleavage strength, flexural strength, the elasticity modulus of concrete to a certain extent.
Cement also is substituted using antifungin, zirconium oxide, hydroxypropyl methyl cellulose, bentonite, mica in the present invention, and Total Replacement rate accounts for 4-5%, and compressive strength of concrete, cleavage strength, flexural strength, the elasticity modulus found has Improve.Hydroxypropyl methyl cellulose, bentonite have certain cementation, can guarantee that is stirred evenly in oscillation treatment mixes Closing material will not be layered, and the mixing for discarding brick powder and cement is more uniform;After generating heat in mixture whipping process, antifungin can swash Issue magnesium borate crystal whisker, improve the hardness of concrete after molding, zirconium oxide can promote zirconium oxide whisker, magnesium borate crystal whisker it Between be nucleated so that compact structure between whisker, reunite, improve crystal property, handled in whipping process using supersonic oscillations, Prevent whisker and other raw materials from reuniting, in mixing process and forming process, whisker can be evenly distributed in brick powder coagulation In soil, the effective Resisting fractre intensity and elasticity modulus for improving brick powder concrete product.
Detailed description of the invention
Fig. 1 is to destroy test specimen aspect graph;
Fig. 2 is test specimen breaking section figure;
Fig. 3 is different fineness brick powder, tensile splitting strength influence diagram of the different Replacement rates to concrete;Wherein, A is identical Fineness difference Replacement rate intensity map, B are identical Replacement rate different fineness intensity maps;
Fig. 4 is intensity line chart of the identical fineness difference Replacement rate to concrete;
Fig. 5 is different fineness brick powder, tensile splitting strength influence diagram of the different Replacement rates to concrete;Wherein, A is identical Fineness 28d tensile splitting strength, B are identical Replacement rate different fineness cleavage strength values;
Fig. 6 is cleavage strength line chart of the identical fineness difference Replacement rate to concrete;
Fig. 7 is different fineness brick powder, flexural strength influence diagram of the different Replacement rates to concrete;Wherein, A is identical fineness Different addition quantity flexural strength comparison diagram, B are identical volume different fineness flexural strength comparison diagrams;
Fig. 8 is flexural strength line chart of the identical fineness difference Replacement rate to concrete;
Fig. 9 is different fineness brick powder, influence diagram of the different Replacement rates to the elasticity modulus of concrete;
Figure 10 is 2000 times of electron microscopes of different fineness brick powder, and wherein A is x2000 times of powder of 0.08mm brick, and B is 0.10mm brick X2000 times of powder, C is x2000 times of powder of 0.15mm brick;
Figure 11 is normal concrete electron microscope, and wherein A is 1000 times of electron microscopes, and B is 1000 times of electron microscopes;
Concrete electron microscope when Figure 12 is brick powder fineness 0.08mm Replacement rate 5%, wherein A is 1000 times of electron microscopes, and B is 2000 times of electron microscopes;
Concrete electron microscope when Figure 13 is brick powder fineness 0.08mm Replacement rate 10%, wherein A is 1000 times of electron microscopes, and B is 2000 times of electron microscopes;
Concrete electron microscope when Figure 14 is brick powder fineness 0.08mm Replacement rate 20%, wherein A is 1000 times of electron microscopes, and B is 2000 times of electron microscopes;
Concrete electron microscope when Figure 15 is brick powder fineness 0.10mm Replacement rate 5%, wherein A is 1000 times of electron microscopes, and B is 2000 times of electron microscopes;
Concrete electron microscope when Figure 16 is brick powder fineness 0.15mm Replacement rate 5%, wherein A is 1000 times of electron microscopes, and B is 2000 times of electron microscopes;
The internal structure chart (10000 times) of concrete when Figure 17-A is brick powder Replacement rate 0%, 17-B is brick powder fineness The internal structure chart of concrete when 0.08mm Replacement rate 5%;
The internal structure chart (10000 times) of concrete when Figure 18 is brick powder Replacement rate 5%, wherein A is brick powder fineness The internal structure chart of concrete when 0.10mm Replacement rate 5%, the inside of concrete when B is brick powder fineness 0.15mm Replacement rate 5% Structure chart.
Specific embodiment
With reference to the accompanying drawing and specific embodiment the invention will be further described.
Cement of the invention is ordinary portland cement, strength grade 42.5MPa.
Embodiment 1
Using the method for discarded sintering shale brick powder production brick powder concrete, include the following steps:
(1) discarded sintering shale brick is recycled, using manually being hammered, being tentatively crushed, sorting, removes discarded burn Tie the impurity of shale brick;
(2) the discarded sintering shale brick after removal of impurities is crushed using jaw crusher, is dried after broken;
(3) broken discarded sintering shale brick is subjected to fineness grinding, vibrating sieving machine is sieved, is dried with baking oven Processing obtains discarded sintering shale brick powder, and the fineness of the discarded sintering shale brick powder is 0.08mm;
(4) according to parts by weight, it is as follows that raw material used are weighed: 359 parts by weight of cement, 600 parts by weight of middle sand, partial size For 1100 parts by weight of stone of 18mm, 190 parts by weight of water, discarded 246 parts by weight of sintering shale brick powder, 3 parts by weight of antifungin, oxygen Change 3 parts by weight of zirconium, 3 parts by weight of hydroxypropyl methyl cellulose, 4 parts by weight of bentonite, 4 parts by weight of mica;
The chemical composition of the sintering shale brick powder is as follows by mass percentage: SiO254.35%;Fe2O310.21%; Al2O314.22%;CaO2.10%;MgO1.00%, surplus are other impurities;
(5) by cement, middle sand, stone, water, discarded sintering shale brick powder, antifungin, zirconium oxide, hydroxypropyl methyl fiber The each raw material mixing of element, bentonite, mica, carries out oscillation using 100 hertz of ultrasonic waves and stirs to get mixed slurry;
(6) by mixed slurry pour into molding it is in-molded, brick powder concrete product can be obtained.
Embodiment 2
Using the method for discarded sintering shale brick powder production brick powder concrete, include the following steps:
(1) discarded sintering shale brick is recycled, using manually being hammered, being tentatively crushed, sorting, removes discarded burn Tie the impurity of shale brick;
(2) the discarded sintering shale brick after removal of impurities is crushed using jaw crusher, is dried after broken;
(3) broken discarded sintering shale brick is subjected to fineness grinding, vibrating sieving machine is sieved, is dried with baking oven Processing obtains discarded sintering shale brick powder, and the fineness of the discarded sintering shale brick powder is 0.10mm;
(4) according to parts by weight, it is as follows that raw material used are weighed: 400 parts by weight of cement, 610 parts by weight of middle sand, partial size For 1135 parts by weight of stone of 20mm, 200 parts by weight of water, discarded 48 parts by weight of sintering shale brick powder, 4 parts by weight of antifungin, oxygen Change 4 parts by weight of zirconium, 4 parts by weight of hydroxypropyl methyl cellulose, 4.5 parts by weight of bentonite, 4.5 parts by weight of mica;
The chemical composition of the sintering shale brick powder is as follows by mass percentage: SiO25485%;Fe2O310.87%; Al2O314.63%;CaO2.38%;MgO1.04%, surplus are other impurities;
(5) by cement, middle sand, stone, water, discarded sintering shale brick powder, antifungin, zirconium oxide, hydroxypropyl methyl fiber The each raw material mixing of element, bentonite, mica, carries out oscillation using 150 hertz of ultrasonic waves and stirs to get mixed slurry;
(6) by mixed slurry pour into molding it is in-molded, brick powder concrete product can be obtained.
Embodiment 3
Utilize the method for discarded sintering shale brick powder production brick powder concrete, which comprises the steps of:
(1) discarded sintering shale brick is recycled, using manually being hammered, being tentatively crushed, sorting, removes discarded burn Tie the impurity of shale brick;
(2) the discarded sintering shale brick after removal of impurities is crushed using jaw crusher, is dried after broken;
(3) broken discarded sintering shale brick is subjected to fineness grinding, vibrating sieving machine is sieved, is dried with baking oven Processing obtains discarded sintering shale brick powder, and the fineness of the discarded sintering shale brick powder is 0.15mm;
(4) according to parts by weight, it is as follows that raw material used are weighed: 445 parts by weight of cement, 620 parts by weight of middle sand, partial size For 1185 parts by weight of stone of 22mm, 210 parts by weight of water, discarded 96 parts by weight of sintering shale brick powder, 5 parts by weight of antifungin, oxygen Change 5 parts by weight of zirconium, 5 parts by weight of hydroxypropyl methyl cellulose, 5 parts by weight of bentonite, 5 parts by weight of mica;
The chemical composition of the sintering shale brick powder is as follows by mass percentage: SiO255.48%;Fe2O311.82%; Al2O315.31%;CaO2.52%;MgO1.20%, surplus are other impurities;
(5) by cement, middle sand, stone, water, discarded sintering shale brick powder, antifungin, zirconium oxide, hydroxypropyl methyl fiber The each raw material mixing of element, bentonite, mica, carries out oscillation using 200 hertz of ultrasonic waves and stirs to get mixed slurry;
(6) by mixed slurry pour into molding it is in-molded, brick powder concrete product can be obtained.
It is " common according to existing national standards in order to study the cubic compressive strength of discarded sintering shale brick powder concrete The mechanical test method standard of concrete " test requirements document production test test specimen in (GB/T50081-2016), test specimen ruler The very little cube standard specimen for 150mm*150mm*150mm, specimen molding are tested test specimen and are adopted due to the limitation of experimental condition With natural sprinkling maintenance, finally utilize the digital display type electro-hydraulic pressure testing machine of TYE-A type in the strength of materials of Guangxi University of Science & Technology Laboratory is tested, and specific test process is as follows:
According to the test material calculated needed for gained mix Design test inventory weighs;
(1) test material is poured into blender, first booting stirring 30s is sufficiently mixed test material, adds test and use Water is again stirring for, and makes concrete formation;
(2) the test die trial that will be stirred molding concrete and be packed into swiped through oil, is put on shake table and shakes, removal test mould Bubble inside type concrete, and shake it is closely knit, reduction test data is had an impact since test operation is improper;
(3) by the demoulding after 2 days of molding test specimen, and the covering curing 28d that sprinkles water naturally;
(4) molding surface of test piece rag wiped clean will be conserved, while the pressure-bearing surface of test apparatus will be cleaned Processing;
(5) side of test specimen is placed on pressure-bearing surface upper and lower plates centre, bearing plate in adjustment makes itself and test specimen pre-terminated Touching, and carry out preloading 5s;
(6) after preloading, test test specimen is continuously loaded with the loading velocity of 0.5~0.8MPa/s;
(7) according to expected failing load, when test specimen will destroy, it is straight to continue load for the oil valve of Adjustment Tests instrument It is destroyed to test specimen, load force value becomes negative value, stops load, and record destroys data;
(8) concrete sample cubic compressive strength value should be calculated as follows:
In formula: fccCubic compressive strength (MPa), F- test specimen failing load (N), the bearing area (mm of A- test specimen2)
Test result:
Cube strength test tests 10 groups according to experimental design conceptual design, every group test specimen 3, amounts to test specimen 30. It is required according to the value of " standard for test methods of mechanical properties of ordinary concrete " (GB/T50081-2016) to carry out test result Analysis, specific the data obtained of testing is shown in Table 1.
2 cubic compressive strength test data of table
Utilize cube of the discarded sintering shale brick powder part substitution obtained discarded sintering shale brick powder concrete of cement The test method of body compressive strength test is same as the cubic compressive strength test of normal concrete.Therefore, discarded in test Sintering shale brick powder concrete can do uniaxial compressive strength test.During test carries out, it has been found that application of the test specimen in load Under, it may occur that longitudinal compression, accompanying this is exactly lateral elongation;It is apparent during test to see, in load During continuing to increase, start that surface of test piece can be made to generate criss-cross micro-cracks, then these cracks are constantly expanded, It causes discarded sintering shale brick powder concrete surface of test piece that bulging takes place, or even falls off, the shape after falling off is similar to Quadrangle cone in mathematical model.Experimental research find that either adding brick powder or common concrete, mould is being destroyed Almost without difference in terms of type, it is similar to quadrangle cone.The breaking section of test specimen is observed it can be found that the surface of test piece destroyed Stone be also have rupture, so, we can determine that test specimen destroy when, the development in crack is directly to wear in stone It crosses, there is no bypass stone.See Fig. 1, Fig. 2.
Replace the cement consumption in concrete using discarded sintering shale brick powder part, baseline control group is not spiked with brick powder. The test of 28 days cubic compressive strengths is carried out to it, test data shows when brick powder fineness is 0.08mm, with Replacement rate by 5%, 10%, 20% increases step by step, it is found that the incrementss of the intensity of discarded sintering shale brick powder concrete gradually decrease, Optimal intensity volume is 5%, and intensity incrementss are 15.29%.10% is less with the intensity incrementss of 20% Replacement rate, but 28d cubic compressive strength, which is above, to be not spiked with the base 28d compression strength of brick powder and is above benchmark group, and incrementss difference is not Greatly, and the intensity value of the brick powder concrete of 10% Replacement rate be lower than standard group.When brick powder fineness is 0.15mm, find with substitution Rate is increased step by step by 5%, 10%, 20%, and the 28d of brick powder concrete is in 5%, 10% Replacement rate and the intensity value of benchmark group It is not much different, the intensity value decline of 20% Replacement rate brick powder concrete is more, reaches 13.72%.In 0.15mm brick powder fineness When general trend be increase with Replacement rate, the cubic compressive strength value of 28d concrete successively decreases step by step.Same Replacement rate Under, with the increase of brick powder fineness, the trend successively decreased integrally substantially is presented in 28d cubic compressive strength value.See Fig. 3 (A, B), figure 4。
Test data analyzer can obtain, and the discarded sintering shale brick powder of 0.08mm substitutes cement conduct 5%, 10%, 20% Admixture is truly feasible, and can preferably improve the strength character of concrete;The discarded sintering shale brick of 0.10mm Powder intensity under 10%, 20% cement substitution rate is promoted, truly feasible;The discarded sintering shale brick powder of 0.15mm exists 5%, concrete strength and common match ratio obtain concrete strength almost without difference under 10% cement Replacement rate.
Axial compressive strength test
Test method
The axial compressive strength test procedure of discarded sintering shale brick powder concrete is tested similar to cubic compressive strength. According to the test requirements document in national standard " the mechanical test method standard of normal concrete " (GB/T50081-2016), Standard prism test specimen of Guangxi University of Science & Technology's making in laboratory having a size of 150mm*150mm*300mm, in intensity experiment room pair It carries out standard curing, after 28d maintenance expires, test specimen is taken out from curing pool, utilizes the microcomputer controlled electro of YAW-3000 type Liquid formula pressure testing machine carries out axial compressive strength test, and specific test procedure is as follows:
(1) it conserves molding test specimen to take out from curing pool, and its surface is cleaned and is dried;
(2) test test specimen is fixed on testing machine by the placement form of testing standard, the upper bearing plate of Adjustment Tests machine, It contacts it with test specimen, and makes its center to it;
(3) the Test Information acquisition system for opening Control System of Microcomputer, selects " compressive strength test of concrete axle center ", root Test parameters data are modified and saved according to every test parameters of calculating;
(4) " experiment starts " button is clicked, starts to test, starts the load for carrying out load, until test specimen load destroys, note Peak load when record destroys;
(5) the proof strength calculation formula of the axial compressive strength test of prism are as follows:
In formula: fcpCubic compressive strength (MPa), F- test specimen failing load (N), the bearing area (mm of A- test specimen2)
Test result
Axial compression test designs 10 groups according to experimental design scheme altogether, amounts to test specimen 30, according to the calculating mark of axial compressive strength Quasi- " standard for test methods of mechanical properties of ordinary concrete " (GB/T50081-2016) carries out data calculating, by resulting test number According to calculating, gained is as follows:
Table 3-1 axial compressive strength test data
2. test specimen failure mode
Through laboratory test the study found that the prism shaft center compression resistant for having added the concrete of discarded sintering shale brick powder is strong Spend test the failure mode of test specimen and the failure mode of normal concrete be not much different, and different discarded brick powder volumes with not It is little that same fineness replaces the form destroyed on it to influence.
Experimental study discovery, the destructive process for discarding sintering shale brick powder concrete are similar: in the small load at load initial stage Under effect, there is not apparent crack in surface of test piece;With continuing for time, test specimen load load constantly increases, test specimen Internal stress is also being gradually increased, it is found that short and small micro-cracks occurs on the surface of test specimen;Continue to load with load, send out The existing direction of these cracks constantly axially constantly extends, the diagonal crack of formation perforation slowly;Load continues to increase, newly Crack constantly internally develop, it is found that drum is slowly played on the surface of the axis pressure test specimen of discarded sintering shale brick powder concrete, even Some generate peeling;When closing on destruction, can hear " rub-a-dub " each sound, test specimen destroy.
4 compressive strength test data of table
After testing through axial compressive strength test test specimen qualified to maintenance in laboratory, related experiment number is acquired According to, the axial compressive strength test value of discarded sintering shale brick powder concrete is obtained by the calculating analysis to test data, it is right Obtained axial compressive strength data and cubic compressive strength data analysis is shown in Table 3-4.China's " concrete design specification " (GB50010-2010) rule in about the cubic compressive strength test value of concrete sample and axial compressive strength test value It is set to: fcp=0.76, it is found by the calculating to test value, the proportionality coefficient of test value is respectively less than 0.76, analyzes reason: one Cubic compressive strength value is improved to a certain extent partially to substitute the brick powder of cement, but corresponding shaft center compression resistant is strong Angle value does not obtain promotion in proportion;Secondly, due to the manual operations of testing crew, the centering of generation misses in experimentation Difference causes the eccentric compression of test specimen, so that measured value is relatively low in theoretical value.
In general, the discarded sintering shale brick powder of 0.08mm fineness is 5%, 20%, 0.10mm fineness in Replacement rate Axis of the brick powder in the discarded sintering shale brick powder concrete of the brick powder for the 0.15mm that Replacement rate is 10%, 20% and 5% Replacement rate The strength difference of heart compression strength and normal concrete is little;Vertical analysis, brick powder fineness under the same conditions, 0.08mm's Brick powder part replaces the intensity of the concrete after cement in the variation of " inverted triangle " form, under 5%, 20% Replacement rate Intensity is higher than the discarded brick powder concrete of 10% Replacement rate;The brick powder part of 0.10mm replaces the strong of the concrete after cement Degree is not much different 10% with the intensity of the brick powder concrete intensity and normal concrete of 20% Replacement rate, 5% reduction About 9.8%.
Tensile splitting strength test
Test method
Tensile splitting strength test basis national standard " normal concrete mechanical test method " (GB/T50081- 2016) related request in makes the cube specimen of 150mm*150mm*150mm, conserves 28d under the conditions of standard curing, It is tested in strength test room using YES-300 digital display type hydraulic pressure testing machine, specific test procedure are as follows:
(1) test specimen that maintenance is completed is taken out from curing pool, test surface of test piece is dried and cleaning treatment;
(2) processing of center line mark is carried out on the surface of test test specimen;
(3) in the lower bearing plate placement arc backing plate of testing machine and three layers of glued board filler strip, (filler strip utilizes wood before the test It is 20mm that plate cutter, which are tailored as width, and length is not less than the shape of 150mm);
(4) test test specimen side pressure-bearing surface center line is aligned lower bearing plate center to place, the arc-shaped pad of bearing plate in placement Plate and filler strip adjust the upper bearing plate of press machine, contact it with test specimen;
(5) testing machine switch is opened, is loaded with the loading velocity of 0.05~0.08MPa/s, until test specimen destroys, record is broken Bad payload data;
(6) tensile splitting strength calculation formula as defined in standardizing;
In formula;ftsConcrete splitting tensile strength (MPa);The failing load (N) of F- test specimen;
A- test specimen splitting surface area (mm2);
Test data
This experimental evidence testing program makes 10 groups of test specimen altogether, amounts to 30 test specimens, and the calculation basis of test value is " common mixed Solidifying soil mechanics test method standard " calculation method in (GB/T50081-2016), calculating gained, to discard sintering shale brick powder mixed The tensile splitting strength data for coagulating soil are shown in Table 5.
5 tensile splitting strength data of table
Analysis of experiments
Resulting test data is analyzed, it is found that discarded sintering shale brick powder splits the substitution of cement to concrete Splitting tensile strength influences less.The tensile strength of general normal concrete is 1/10~1/20, the 10 of its cubic compressive strength It is L4 (4.25MPa) that intensity is highest in group test test specimen;For the brick powder of 0.08mm fineness in 5% Replacement rate, cleavage strength is most High (3.48MPa) maintains an equal level with the cleavage strength of normal concrete when 20% Replacement rate, and the splitting of the concrete of 10% Replacement rate is strong Degree is lower than the cleavage strength of normal concrete, reduces by 9.8%;The brick powder of 0.10mm fineness splitting in 5%, 20% Replacement rate Resistance to spalling is above the cleavage strength of normal concrete, and 20% value added is up to 26.8%, and the splitting of 10% Replacement rate is strong Angle value is lower than normal concrete, reduced rate 13.1%.The brick powder of 0.15mm fineness is slightly slightly below general in 5% Replacement rate Logical concrete, when 10%, 20% Replacement rate, are above normal concrete.See Fig. 5 (A, B), Fig. 6.
Flexural strength test
In order to determine the flexural strength of discarded sintering shale brick powder concrete, according to flexural strength pilot country standard Related request in " normal concrete mechanical test method " (GB/T50081-2016) makes 150mm*150mm* The cube specimen of 600mm conserves 28d under the conditions of standard curing, utilizes the hydraulic pressure of YES-300 digital display type in strength test room Force tester is tested, specific test procedure are as follows:
(1) test specimen that maintenance is completed is taken out from curing pool, the surface of test test specimen is dried and cleaning treatment;
(2) processing of line mark is labeled on the surface of test test specimen
(3) support of testing machine is adjusted to suitable position;
(4) marking line for testing test specimen is aligned with the support of testing machine, adjusts the upper bearing plate of press machine, makes itself and examination Part contact;
(5) testing machine switch is opened, is loaded with the loading velocity of 0.05~0.08MPa/s, until test specimen destroys, record is broken Bad payload data;
(6) tensile splitting strength calculation formula as defined in standardizing:
In formula: ftFlexural strength (MPa), F- test the failing load (N) of test specimen, the span (mm) between l- support, h- The depth of section (mm) of test specimen, the cross-sectional width (mm) of b- test specimen
Test result
This experimental evidence testing program makes 10 groups of test specimen altogether, amounts to 30 test specimens, and the calculation basis of test value is " common mixed Solidifying soil mechanics test method standard " calculation method in (GB/T50081-2016), calculating gained, to discard sintering shale brick powder mixed The flexural strength data for coagulating soil are shown in Table 6.
6 flexural strength test data of table
Analysis of experiments
Analysis through test data finds that the failing load of 10 groups of test test specimens has reached its cubic compressive strength 1/5~1/10, the flexural strength of only Z1 group is slightly below the flexural strength of normal concrete, reduced rate about 8.2%, Z2 group Flexural strength highest (5.58MPa), is approximately higher than normal concrete 11.8%.So being found by the analysis to test data, give up Abandoning sintering shale brick powder influences less the part of cement substitution on the fracture resistance of its concrete, and can find in certain journey Its flexural strength is improved on degree, and Beneficial Effect is generated to discarded sintering shale brick powder concrete.See Fig. 7 (A, B), Fig. 8.
Elasticity modulus test
Test method
It can or can not be to the shadow of the deformation state of concrete to the part substitution of cement in order to study discarded sintering shale brick powder It rings.According to the test requirements document in national standard " standard for test methods of mechanical properties of ordinary concrete " (GB/T50081-2016), It is tested in the prism of making in laboratory 150mmx150mmx300mm.This time test makes 10 groups of test specimen, every group 6 altogether It is a, amount to test test specimen 60, conserves at standard conditions.Wherein, in every group of 6 test specimens, wherein 3 are used to carry out axle center Compressive strength test, 3 are used to carry out elasticity modulus test.This test is electro-hydraulic using TYE-A type digital display type in strength test room Pressure testing machine is tested.
The elasticity modulus calculation formula of concrete are as follows:
In formula:
EcModulus of elasticity of concrete (MPa);
F0Initial load (N) when stress is 0.5MPa;
A- test specimen bearing area (mm2)
L- measurement markers (mm);
Δ n=ε a
In formula:
For the last time from F0The average value (mm) of test specimen two sides deformation when loading is to Fa;
εaWhen test specimen two sides deformation values (mm);
ε0When test specimen two sides deformation values (mm);
Test result
This test designs 10 groups of test specimen altogether, amounts to test specimen 60.The shaft center compression resistant that test test specimen is worked as in requirement in experiment is strong Angle value and the axial compressive strength value of control load for being used to examine differ by more than 20%, when, this test value is invalid, by other two The mean value calculation of the test value of group test test specimen, if not being able to satisfy this requirement, this group of test value is invalid.
7 axial compressive strength value of table
8 elasticity modulus test data of table
Analysis of experiments
The test age of the elasticity modulus test test specimen of this test is 28d, and test result such as Fig. 9, we can from figure Significantly to find out: in different Replacement rate and fineness under the part substitution of cement, discarding sintering shale brick powder concrete The variation of part has occurred in elasticity modulus.Under conditions of fineness is constant, increase with brick powder to cement Replacement rate, from 5%, 10%, 20% can find that the elasticity modulus of its concrete has the reduction in certain Chengdu.The elastic mould value of blank control group is 31904.79MPa, as reference, the reduced rate of the brick powder fineness of 0.08mm is followed successively by 7%, 13%, 21%;The brick of 0.10mm For powder fineness, discovery reduced rate is followed successively by 9.7%, 14%, 16%;The reduced rate of the concrete of 0.15mm brick powder fineness is successively It is 15%, 17%, 18%.When Replacement rate is identical, the variation of elasticity modulus is unobvious.
The full immersed type moisture content test
Test specimen age 28d is tested in the moisture content test.When test, the test specimen of maintenance expiry is dried with drying box first Processing, then the test specimen after drying is placed in water tank, add water until test specimen all submergences, continue to add water, until the water surface is high Surface of test piece 30mm or so out, stops plus water weighs to test test specimen every for 24 hours, record test specimen matter as time shaft Amount, in test specimen quality not when increasing, test stops.It is found by carrying out analysis to data, has added discarded sintering shale brick The water absorption rate of the concrete of powder and common concrete is essentially identical, and about 2%.
9 concrete full immersed type moisture content test value of table
Table9Testvalueoftotalimmersionwaterabsorptionofconcrete
Test discovery, when the fineness of discarded sintering shale brick powder is identical, under different Replacement rates, global regularity are as follows: with The increase of brick powder Replacement rate, the water absorption rate of concrete gradually increase.The water absorption rate of the brick powder concrete of 0.08mm fineness on the whole Lower than reference group.Under 5%, 10%, 20% different Replacement rates, the reduced rate of 0.08mm fineness brick powder is followed successively by 4.9%, 3.0%, 1.97%.Zigzag on the surface of brick powder after grinding, it is rough, can well and concrete other Material is interlocked, and can play good hole filling effect, this gets over hour performance in brick powder fineness and is more obvious.Brick powder Fineness is smaller, and surface area can be bigger, just will increase with the contact area of cement material, and the aquation of cement is further promoted to make With.
Brick powder Replacement rate under the same conditions, the water absorption rate of brick powder concrete shows as the increase with brick powder fineness And increase.By taking 5% brick powder Replacement rate as an example, the water absorption rate reduced rate of 0.08mm, 0.10mm, 0.15mm fineness brick powder are followed successively by 4.9%, 2.5%, 0.09%.The concrete water absorption rate of 10% Replacement rate shows as being more than common coagulation in 0.15mm fineness The water absorption rate of soil.A small amount of brick powder volume can promote the aquation of cement to a certain extent, but when volume is more, inhibit instead The hydration of cement, therefore show as water absorption rate increase.
Microscopic test overview
This test is scanned test using flying to receive desk-top ESEM (full-automatic electronic microscope).Specific test step It is rapid as follows:
(1) selected sample is fixed on by the suitable specimen locations of picking size, material from test specimen using conducting resinl Follow closely pattern sample platform;
(2) metal spraying processing is carried out for selected concrete material sample;
(3) sample is clamped with dedicated tweezers, is inserted vertically into sample loop, rotates clockwise becket, makes sample highest point Maintain an equal level with latch closure plane;Continue to rotate four scales, sample is made to decline four 20mm;Hatch door is opened, sample loop is inserted into, works as examination When sample lamp lights automatically, hatch door is closed;
(4) parameters for adjusting Electronic Speculum, reach suitable photographing mode, are switched to Electronic Speculum mode, adjust the competing multiple of electricity, Test specimen is carried out to take pictures;
(5) sample is unloaded.
Electron-microscope scanning test
Discarded sintering shale brick powder electron-microscope scanning test
Discarded sintering shale glues research object of the powder as this test, is tested by the electron-microscope scanning under different multiples to it Appearance features are analyzed, and are studied with this to study its influence for concrete performance.
From 2000 times of electron microscopic pictures (Figure 10-A, Figure 10-B, Figure 10-C) of different fineness brick powder, it is clear that with The increase of fineness, the uniformity of brick powder is smaller and smaller, can be apparent in 0.15mm brick powder see in brick powder particles existing The distribution of particles of more bulky grain, 0.08mm brick powder is more uniform.
Amplify electron microscopic picture from different fineness brick powder it can be seen that due to have passed through the broken of brick body, the continuous of instrument is ground The discarded sintering shale brick powder obtained after mill, screening, the fracture on surface is not neat, and in irregular shape.These The surface characteristic of brick powder can enhance the mechanical snap between its a variety of materials when forming discarded sintering shale brick powder concrete Effect, to improve the various excellent performances of discarded sintering shale brick powder concrete.This is obtained in above-mentioned mechanical property research Good verifying is arrived.
1 group from 12-14 microgram, the microcosmic map analysis of 2 groups, 3 groups admixture brick powder is found, is 0.08mm in brick powder fineness When, with the increase of brick powder Replacement rate, from the microcosmic graph discovery of amplification, still there is microcrack in three groups of brick powder concretes, But the width relative to common its microcrack of concrete is reduced.Think that the brick powder of irregular surface shape enhances It is cementing with cement material, and the sticky of concrete material for adding brick powder and being formed is caused to increase, mechanical snap effect enhancing. It is found from the development situation analysis in the slump combination crack for newly mixing brick powder concrete, the admixture of brick powder, which both increases, newly mixes coagulation The viscosity of soil, enhances the interlocking of its storeroom, and filling effect is obvious.Caused by the concrete early stage poured in this way All there is a degree of reduction in microcrack, be advantageous to the mechanical property of discarded sintering shale brick powder concrete.
From the microcosmic map analysis discovery of 0 group of normal concrete of Figure 11-A, Figure 11-B, or else with discarded sintering shale brick powder When carrying out part substitution to cement, the inside of concrete structure test specimen is distributed many intensive apertures, part between these gaps Connection, but it is distributed but ununified rule, and not of uniform size.In this way this result in the porosity of its concrete sample compared with Greatly, the use function of concrete structure is substantially reduced.
From the microcosmic map analysis discovery of 1 group of brick powder concrete of Figure 12-A, Figure 12-B, substituted with the brick powder part of 0.08mm After cement, under the conditions of 5% Replacement rate, for the internal structure of normal concrete, the inside of brick powder concrete Void concentration is substantially reduced, and internal flaw is reduced, and enhances the compactness of concrete structure, is produced to the use of brick powder concrete Raw favorable influence.
From the microcosmic map analysis discovery of 2 groups of brick powder concretes of Figure 13-A, Figure 13-B, substituted with the brick powder part of 0.08mm After cement, under the conditions of 10% Replacement rate, for the internal structure of normal concrete, in brick powder concrete structure Portion's hole and normal concrete are not much different, and inside distribution is more, are partially connected to but in irregular shape, compactness is not much different.
From the microcosmic map analysis discovery of 3 groups of brick powder concretes of Figure 14-A, Figure 14-B, substituted with the brick powder part of 0.08mm After cement, under the conditions of 15% Replacement rate, for the internal structure of normal concrete, the structure of brick powder concrete Gap and crack are relatively fewer, and compactness is higher.
The brick powder concrete of 1,2,3 group of analysis finds that hole present in the concrete of 10% substitution rate is more, thus The brick powder concrete short texture for causing it to be formed, strength reduction, the test result one of this result and its cubic compressive strength It causes.
Found from microgram analysis and summary, with the discarded sintering shale brick powder part substitution molding concrete of cement casting with 0 group of normal concrete it was found that, the hole of normal concrete is small and intensive, and the concrete pore for having added brick powder is intensive It spends small.Microcosmic point of brick powder concrete is organized from 1 (Figure 12-A, Figure 12-B), 4 (Figure 15-A, Figure 15-B), 7 (Figure 16-A, Figure 16-B) Analysis discovery, under conditions of same Replacement rate, the compactness highest of the brick powder concrete of 0.08mm, 0.01mm and 0.15mm's The concrete density of brick powder Replacement rate is relatively low, and brick powder of the 0.01mm brick powder Replacement rate compared to 0.15mm replaces gap more Closely.
Influence research of the discarded sintering shale brick powder to concrete inner structure
It is found from the controlled analysis of Figure 17-A normal concrete, when being not spiked with brick powder, cement water in normal concrete Product after change is mainly linked together by the C-S-H gel of different shape, is existed between the gap of CSH gel and is permitted Many a plurality of needle bar shape entringite different in size, as can be seen that these spicules are mainly also distributed across from picture The periphery of hole or hole, while some six square plates shape Ca (OH) are also spread on the surface of hydrated product2.From the aquation in picture Product micromorphology picture is close it can be found that the internal structure of normal concrete relatively loosely, has more hole and crack Solidity is not high.
It is found from the picture of Figure 17-B, after having added part brick powder to substitute cement, aquation in brick powder concrete The CSH gel that surface has major part to connect together is formed by connecting or even slabbing distribution, the CH of surface distribution obviously increase It is more, but the difficult hydrated product entringite for therefrom finding needle-shaped shape, illustrate that the brick powder added promotes cement to a certain extent Aquation, hydrated product, which increases, makes its surface compact, covers the presence of entringite, this improves brick powder coagulation to a certain extent The excellent performance of soil.
The distribution of its hydrated product is found from the picture of Figure 18-A and 18-B and the differing distribution of normal concrete is not very Greatly, surface has hydrated calcium silicate gel of different shapes to be connected with each other, and a large amount of shapes are distributed around hole and gap Needle bar shape entringite different, of different sizes, while surface different location is scattered calcium hydroxide crystals.These gels spread The internal structure of the brick powder concrete formed it into the acicular entringite of irregular shape does not obtain advantageous improvement, To the far-reaching using function effect of concrete.
In conclusion finding from the picture of surface sweeping Electronic Speculum different amplification, sintering shale brick powder is discarded to the portion of cement Divide substitution that can give full play to mechanical snap of the brick powder to cement material and its filling effect to concrete pore, reduces in coagulation Soil pours the development of the inside microcrack at initial stage, reduces the porosity of inside concrete and can promote cement to a certain extent Aquation, increase the compactness of concrete, to improve the excellent performance of concrete.
So a certain amount of discarded sintering shale brick powder production concrete with particular fineness of blending is feasible.
After the applicant further studies, discovery is replaced outside part of cement using using discarded sintering shale brick powder, will also Part of cement is substituted in antifungin, zirconium oxide, hydroxypropyl methyl cellulose, bentonite, mica, and total Replacement rate accounts for 4-5%, passes through It crosses the compressive strength of concrete, cleavage strength, flexural strength, the elasticity modulus that find after result detection and has and change It is kind.
Comparative example 1: preparation method is same as Example 1, and difference is by antifungin, zirconium oxide, hydroxypropyl methyl fiber Element, bentonite, mica, which are substituted part of cement and all change discarded sintering shale brick powder into, carries out substitution cement portion.
Comparative example 2: raw material is same as Example 1, and difference is not carry out supersonic oscillations in step, only with common Agitating mode stir evenly.
Performance detection is carried out to the product that embodiments herein 1-3 is prepared, the product of detection uses:
As seen from the above table, using after further Improvement formula, accounting, after process modification, in each physical property On obtained certain improvement.
Although the present invention is disclosed as above with preferred embodiment, so it is not intended to limiting the invention, any this field skill Art personnel, without departing from the spirit and scope of the present invention, when a little modification and perfect therefore of the invention protection model can be made It encloses to work as and subject to the definition of the claims.

Claims (6)

1. utilizing the method for discarded sintering shale brick powder production brick powder concrete, which comprises the steps of:
(1) discarded sintering shale brick is recycled, using manually being hammered, being tentatively crushed, sorting, removes discarded sintering page The impurity of rock brick;
(2) the discarded sintering shale brick after removal of impurities is crushed using jaw crusher, is dried after broken;
(3) broken discarded sintering shale brick is subjected to fineness grinding, vibrating sieving machine is sieved, is dried with baking oven Discarded sintering shale brick powder is obtained, the fineness of the discarded sintering shale brick powder is 0.08-0.15mm;
(4) according to parts by weight, it is as follows that raw material used are weighed: cement 359-445 parts by weight, middle sand 600-620 parts by weight, Stone 1100-1185 parts by weight, water 190-210 parts by weight, discarded sintering shale brick powder 24-96 parts by weight, antifungin 3-5 weight Part, zirconium oxide 3-5 parts by weight, hydroxypropyl methyl cellulose 3-5 parts by weight, bentonite 4-5 parts by weight, mica 4-5 parts by weight;
(5) by cement, middle sand, stone, water, discarded sintering shale brick powder, antifungin, zirconium oxide, hydroxypropyl methyl cellulose, swollen The each raw material mixing of profit soil, mica, carries out oscillation using 100-200 hertz of ultrasonic waves and stirs to get mixed slurry;
(6) by mixed slurry pour into molding it is in-molded, brick powder concrete product can be obtained.
2. the method as described in claim 1 using discarded sintering shale brick powder production brick powder concrete, it is characterised in that: institute The chemical composition for stating sintering shale brick powder is as follows by mass percentage: SiO254.35-55.48%;Fe2O310.21- 11.82%;Al2O314.22-15.31%;CaO2.10-2.52%;MgO1.00-1.20%, surplus are other impurities.
3. the method as described in claim 1 using discarded sintering shale brick powder production brick powder concrete, it is characterised in that: institute The partial size for stating stone is 18-22mm.
4. the method as described in claim 1 using discarded sintering shale brick powder production brick powder concrete, it is characterised in that: institute Stating cement is ordinary portland cement, strength grade 42.5MPa.
5. the method as described in claim 1 using discarded sintering shale brick powder production brick powder concrete, it is characterised in that: institute The ratio of mud for stating mixed slurry is 0.42-0.45.
6. the method as described in claim 1 using discarded sintering shale brick powder production brick powder concrete, it is characterised in that: press Parts by weight meter it is as follows to weigh raw material used: 400 parts by weight of cement, 610 parts by weight of middle sand, 1135 parts by weight of stone, water 200 parts by weight, discarded 48 parts by weight of sintering shale brick powder, 4 parts by weight of antifungin, 4 parts by weight of zirconium oxide, hydroxypropyl methyl fiber Plain 4 parts by weight, 4.5 parts by weight of bentonite, 4.5 parts by weight of mica.
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* Cited by examiner, † Cited by third party
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CN104072060A (en) * 2014-07-01 2014-10-01 谢伟杰 Ceramic water-permeable tile
CN105541384A (en) * 2015-12-28 2016-05-04 重庆建工第二建设有限公司 Ultralight foam concrete and preparing method thereof
CN106587807A (en) * 2016-11-29 2017-04-26 怀宁县信宁新型建材有限公司 Hollow brick for buildings having anti-seismic property and preparation method thereof

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Publication number Priority date Publication date Assignee Title
SU1433936A1 (en) * 1987-01-23 1988-10-30 Литовский Научно-Исследовательский Институт Строительства И Архитектуры Concrete mix
CN104072060A (en) * 2014-07-01 2014-10-01 谢伟杰 Ceramic water-permeable tile
CN105541384A (en) * 2015-12-28 2016-05-04 重庆建工第二建设有限公司 Ultralight foam concrete and preparing method thereof
CN106587807A (en) * 2016-11-29 2017-04-26 怀宁县信宁新型建材有限公司 Hollow brick for buildings having anti-seismic property and preparation method thereof

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112209641A (en) * 2020-10-29 2021-01-12 陇南祁连山水泥有限公司 Method for preparing cement by using waste sintered shale

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