CN107311495A - Rubber grain weightening finish method and rubber concrete preparation method - Google Patents
Rubber grain weightening finish method and rubber concrete preparation method Download PDFInfo
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- CN107311495A CN107311495A CN201710567030.4A CN201710567030A CN107311495A CN 107311495 A CN107311495 A CN 107311495A CN 201710567030 A CN201710567030 A CN 201710567030A CN 107311495 A CN107311495 A CN 107311495A
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- rubber grain
- rubber
- particle
- concrete
- weightening finish
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Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/10—Coating or impregnating
- C04B20/1055—Coating or impregnating with inorganic materials
- C04B20/1088—Water
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/18—Waste materials; Refuse organic
- C04B18/20—Waste materials; Refuse organic from macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/10—Coating or impregnating
- C04B20/1055—Coating or impregnating with inorganic materials
- C04B20/1077—Cements, e.g. waterglass
-
- 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
-
- 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 provides a kind of rubber grain weightening finish method and rubber concrete preparation method, rubber grain weightening, density can be made to become big, so as to be more evenly distributed in concrete, lift the mechanical property of rubber concrete.Rubber grain weightening finish method involved in the present invention, it is characterised in that comprise the following steps：Step 1. takes a certain amount of rubber grain, with clear water immersion until particle sinks completely, and particle surface bubble-free；Step 2. takes out rubber grain, by volume 1:1 is put into stirring in the cement mortar for the cement hardener for mixing 20%；Step 3. observes mixture denseness, adds appropriate water, is 6 10 to the mixture slump, is stirred for a period of time；Step 4. uniformly spreads mixture out with perching knife, makes particle substantially separated, dries naturally；Step 5. weeds out excessive powder with silk screen, is put into water to conserve and is taken out after a couple of days；Every a few hours agitation particle once, it is in canescence that agitation is dried to particle afterwards for several times to step 6., obtains the rubber grain after weightening processing.
Description
Technical field
The invention belongs to concrete material field, and in particular to a kind of rubber grain weightening finish method and corresponding rubber concrete
Preparation method.
Background technology
Rubber concrete is a kind of new construction material.It is not only to solve waste and old wheel that rubber grain is mixed in concrete
The black pollution that tire is caused provides a new approach, and the toughness of concrete is also improved to a certain extent.Rubber coagulation
The performance of soil with good toughness, endurance quality, resists between normal concrete (rigidity) and bituminous concrete (flexibility)
The features such as fragility energy, damping performance, shock resistance and noise reduction sound insulation property.
But as can be seen that the experimental data of rubber concrete is very discrete in the more research carried out from domestic and foreign scholars,
Sometimes it is even conflicting, think the grain of rubber per capita such as Ali and Fattuhi and Clark and Liu Feng, woods phoenix orchid
Footpath is bigger, and the compression strength fall of rubber concrete is smaller；And Khatib, Bayomy, Topcu and Kew H.Y. are studied
Conclusion and its contrast.The Zhang Haibo of Institutes Of Technology Of He'nan then thought under relatively low substitution amount, the rubber concrete of 100 mesh
Compression strength is higher than the rubber concrete of 5 mesh, and after certain substitution amount is reached, the magnitude relationship of both compression strength is exchanged.Study carefully
Its reason, it should be make rubber concrete when rubber grain skewness caused by.
When to rubber grain sample detection, the bulk density of 5-20 mesh rubber grains is in 1.81g/cm3-1.83g/
cm3, slightly larger than water, but due to containing gas in particle, and rubber grain belongs to hydrophobicity elastic gel synthetic material, in water
In suspension and floating state；And sand, stone density are much larger than water, sink in water.Rubber grain floats, tied in whipping process
Stick together, and concrete binding leakiness, inside sample after shaping, rubber grain skewness, so as to cause rubber coagulation
Soil mechanics performance declines to a great extent compared with normal concrete and test data is discrete larger.Therefore rubber in rubber concrete is solved
Grain skewness is the new focus of numerous scholar's research.
Discovery is probed into experiment to rubber concrete, and because rubber density itself is small, its particle surface has hydrophobicity, with
Nature difference is big in all fields for the other materials of concrete.So that the rubber in incorporation concrete is distributed not after specimen molding
Uniformly, caking property is bad, inside concrete fracture development so that rubber concrete compared with normal concrete in intensity significantly
Reduce.In order to solve these defects of rubber concrete, domestic and international scientific research personnel also puts into substantial amounts of to modified rubber concrete
Experimental Research.More scholar is uniform in concrete to improve rubber grain by carrying out surface preparation to rubber grain
Property, relatively common is that rubber grain is put into NaOH, CCl4, water, KH570, enter in the solution of preparation such as maleic anhydride (MAH)
Row immersion treatment, then it is incorporated into the change that its basic mechanical performance is studied in concrete.Test result indicates that：By various surfaces
The rubber concrete sample that the rubber grain of pretreatment is made, its basic mechanical performance has been lifted.
Most of researcher advocates to soak rubber with chemical reagent in above-mentioned experiment, is mixed after the completion of pretreatment
Enter concrete, its actual test effect is it is also obvious that the rubber concrete after processing has in various degree on different performance
Change.Its cardinal principle is to make it close with mortar bonding by the surface treatment of rubber grain, so as to improve fundamental mechanics
Performance.But rubber grain density is small, the problem of surface is big compared with ordinary concrete aggregate otherness can not still solve.This causes rubber to mix
Solidifying soil still has rubber grain stirring easily knot and sticks together, vibrates and easily float, bond leakiness etc. after shaping and ask during system is matched somebody with somebody
Topic.These cause the factor of rubber concrete mechanical property defect, are that we are urgently to be resolved hurrily.
The content of the invention
The present invention is carried out to solve above-mentioned problem, it is therefore intended that provide a kind of rubber grain weightening finish method and corresponding
Rubber concrete preparation method, rubber grain weightening, density can be made to become big, so as to be more evenly distributed in concrete, entered
And lift the mechanical property of rubber concrete.
The present invention to achieve these goals, employs following scheme.
<Rubber grain weightening finish method>
The present invention provides a kind of rubber grain weightening finish method, it is characterised in that comprise the following steps：Step 1. takes a certain amount of
Rubber grain, with clear water immersion until particle sinks completely, and particle surface bubble-free；Step 2. takes out rubber grain, presses
Volume ratio 1:1 is put into stirring in the cement mortar for the cement hardener for mixing 20%；Step 3. observes mixture denseness, adds in right amount
Water, is 6-10 to the mixture slump, is stirred for a period of time；Step 4. uniformly spreads mixture out with perching knife, makes particle base
This is separated, and is dried naturally；Step 5. weeds out excessive powder with silk screen, is put into water to conserve and is taken out after a couple of days；Step 6. is every number
Once, it is in canescence that agitation is dried to particle afterwards for several times to hour agitation particle, obtains the rubber grain after weightening processing.
Rubber grain weightening finish method involved in the present invention, can also have the feature that：In step 1, the rubber taken
The particle diameter of glue particle is not less than 1mm.
Rubber grain weightening finish method involved in the present invention, can also have the feature that：In step 2, mixing time
For 2~10min.
Rubber grain weightening finish method involved in the present invention, can also have the feature that：In step 3, mixing time
For 3~10min.
Rubber grain weightening finish method involved in the present invention, can also have the feature that：In steps of 5, number of days is conserved
For 2~5 days.
Rubber grain weightening finish method involved in the present invention, can also have the feature that：In step 6, agitation interval
Time is 2~4 hours, is stirred 2~3 times.
<Rubber concrete preparation method>
Weightening processing is first carried out to rubber grain using the rubber grain weightening finish method such as any one in claim 1 to 5,
Then the rubber grain after weightening is mixed in concrete.
The effect of invention and effect
Rubber grain weightening finish method provided by the present invention and corresponding rubber concrete preparation method, can be to rubber grain
Weightening is handled so that rubber grain density becomes big, close to the density of sandstone, while improving the hydrophobicity of rubber particle surface, is increased
Rubber grain handle again after is during mixed configuration rubber concrete, and distribution is obvious evenly, in the absence of rubber grain
The phenomenon and particle knot of floating stick together phenomenon, and with the gradually increase of rubber grain volume, rubber concrete top, middle part and
The percentage of rubber grain in bottom increasingly convergence 1/3, shows this method to rubber grain in the uniform of inside concrete
Distribution, serves effective improvement result.
Brief description of the drawings
Fig. 1 is the flow chart of rubber grain weightening finish method of the present invention；
Fig. 2 is the profile of rubber concrete, wherein, (a) to (c) is prepared using the rubber concrete of the present invention respectively
The rubber volume that method is prepared is the profile of 5%, 10%, 15% rubber concrete, and (d) to (f) is using existing respectively
There is the profile of rubber volume prepared by technical method for 5%, 10%, 15% General Purpose Rubber concrete；
Fig. 3 is the distribution situation schematic diagram of the rubber grain in rubber concrete.
Embodiment
Detailed is made to rubber grain weightening finish method involved in the present invention and rubber concrete preparation method referring to the drawings
Illustrate.
<Embodiment>
As shown in figure 1, rubber grain weightening finish method comprises the following steps：
Step 1. takes a certain amount of rubber grain, with running water immersion until particle sink completely, and particle surface without
Bubble, and bright yellow is presented in soak；In the present embodiment, the rubber grain particle diameter taken is 3-4mm, and soak time is 4-5
My god, do not sink if there are individual particles, lose；
Step 2. takes out rubber grain, by volume 1:1 is put into the cement mortar for the cement hardener for mixing 20% and stirs number
Minute, in the present embodiment, mixing time is 3min；
Step 3. observes mixture denseness, adds appropriate water, is 6-10 to the mixture slump, when being stirred for one section
Between, in the present embodiment, mixing time is 5min；
Step 4. is uniformly spread mixture out on clean water mud ground face with perching knife, is made particle substantially separated, is dried in the air naturally
Dry, in the present embodiment, flash-off time is 40min；
The particle dried is weeded out excessive powder by step 5. with aperture 2-3mm silk screens, is put into water to conserve and is taken out after a couple of days,
Conserved in the present embodiment 3 days；
Step 6. stirred particle once in 12 hours every 3~4 hours, it is to avoid particle knot sticks together, and then dries to particle
In canescence, the rubber grain after weightening processing is obtained.
It will be carried out using above-mentioned steps in the incorporation concrete of the rubber grain after weightening processing, you can weightening finish method is made and is modified
Rubber concrete.
Contrast test：
Contrasted with reference to design method two kinds of rubber concretes of preparation of common concrete proportioning：Weightening finish method is modified rubber
Glue concrete (SRn), rubber concrete (Rn).Wherein rubber grain is mixed respectively with 5%, 10%, 15% isometric replacement sand coarse aggregate ratio
Enter in concrete；Weightening finish method rubber grain volume is the rubber grain quality before pretreatment.Standard is pressed in the preparation and maintenance of sample
Processing.
Sample is carried out to split drawing experiment, the section of cuboid sample after observation is rived.It was found that General Purpose Rubber concrete is almost
All there is the phenomenon of particle floating, shown in black coil is marked in such as Fig. 2 (d), (e), (f), wherein when rubber volume is 15%
When, occur rubber grain knot on R15 section and stick together phenomenon；And the obvious more common rubber of weightening finish method rubber grain distribution of particles situation
Glue concrete does not find obvious particle knot evenly, on section and sticked together position, such as Fig. 2 (a), (b), shown in (c).Increase in observation
During the splitting tensile test section of weight method rubber concrete, because the surface of weightening finish method rubber grain is into canescence, directly observe
The rubber grain distribution situation of section is relatively difficult, but is drenched with water after section, and rubber grain is just easier to observation.
Orientation when being vibrated according to test specimen, we the section of rubber concrete cube specimen be equally divided into top, in
Each barish rubber grain number on section is checked in portion, the part of bottom three, observation, and data list is as shown in table 1, rubber
Glue distribution of particles figure is as shown in Figure 3.
The rubber grain number of different parts on the cube section of table 1
The uniformity that can be seen that the distribution of weightening finish method rubber grain from table 1 and Fig. 3 is substantially better than General Purpose Rubber particle.It is general
The top and middle part that are generally distributed when all deviation test specimen vibrates of rubber grain in logical rubber concrete, lower rubber particle account for examination
The ratio of part integral particle number is smaller, and rubber volume is more, and such case is all the more obvious；And weightening finish method rubber concrete
In, with the gradually increase of rubber grain volume, the percentage increasingly convergence 1/3 of upper, middle and lower.This explanation rubber
The weightening finish method pretreating process of particle, is uniformly distributed to rubber grain in inside concrete, and very big change can be played really
Kind effect.
Increase the density of rubber grain, be allowed to the density close to sandstone, so that rubber grain is not in stirring, process of vibrating
It can float.
With reference to GB/T50081-2002《Standard for test methods of mechanical properties of ordinary concrete》Carry out three kinds of concrete cube
The compression test of body sample is tested with drawing is split.Due to the non-standard sample that sample is 100*100*100, data are carried out according to the rules
Processing, the test value surveyed should be multiplied by 0.95,0.85 dimension conversion coefficient respectively, and specific intensity level is as shown in table 2.
The mechanical property test data of table 2
It can be seen that with reference to table 2, in cube compression test：It is pre- by rubber grain in the case of different rubber volumes
The SR compression strength of processing has different degrees of raising compared with R.When rubber volume is 5%, 10%, 15%, located in advance by weightening finish method
The SR of reason is respectively increased 19.2% compared with R compression strength, 25.8%, 30.2%, SR15 cubic compressive strength improves and shows the most
Write；But relative C intensity, SR compression strength is 67.3%, 57.8%, the 73.2% of C intensity.The anti-splitting tension and compression of cube
In experiment：Tensile splitting strength overall SR and R is integrally below C.Mixed in rubber grain volume as 5%, 10%, 15%
In test block, SR is respectively increased 38.8%, 17.6%, 13.7% compared with R tensile splitting strengths；SR tensile splitting strengths are more anti-than C splittings
Tensile strength is respectively increased -8.6%, -21.9%, -8.6%.This explanation is in the range of certain rubber grain volume, weightening finish method rubber
Pretreatment of particles technique has raising by a relatively large margin to the compression strength and anti-splitting tensile and compressive strength of rubber concrete.
Above example is only the illustration done to technical solution of the present invention.Rubber grain involved in the present invention
Weightening finish method and rubber concrete preparation method are not merely defined in structure described in the embodiment above, but with right
It is required that limited range is defined.Any modification that those skilled in the art of the invention are made on the basis of the embodiment or
Supplement or equivalence replacement, all in scope of the present invention.
Claims (7)
1. a kind of rubber grain weightening finish method, it is characterised in that comprise the following steps：
Step 1. takes a certain amount of rubber grain, with clear water immersion until particle sinks completely, and particle surface bubble-free；
Step 2. takes out rubber grain, by volume 1:1 is put into stirring in the cement mortar for the cement hardener for mixing 20%；
Step 3. observes mixture denseness, adds appropriate water, is 6-10 to the mixture slump, is stirred for a period of time；
Step 4. uniformly spreads mixture out with perching knife, makes particle substantially separated, dries naturally；
Step 5. weeds out excessive powder with silk screen, is put into water to conserve and is taken out after a couple of days；
Every a few hours agitation particle once, it is in canescence that agitation is dried to particle afterwards for several times to step 6., is obtained after weightening processing
Rubber grain.
2. rubber grain weightening finish method according to claim 1, it is characterised in that：
Wherein, in the step 1, the particle diameter of the rubber grain gone is not less than 1mm.
3. rubber grain weightening finish method according to claim 1, it is characterised in that：
Wherein, in the step 2, mixing time is 2~10min.
4. rubber grain weightening finish method according to claim 1, it is characterised in that：
Wherein, in the step 3, mixing time is 3~10min.
5. rubber grain weightening finish method according to claim 1, it is characterised in that：
Wherein, in the step 5, maintenance number of days is 2~5 days.
6. rubber grain weightening finish method according to claim 1, it is characterised in that：
Wherein, in the step 6, agitation interval time is 2~4 hours, is stirred 2~3 times.
7. a kind of rubber concrete preparation method, it is characterised in that：
Weightening processing is first carried out to rubber grain using the rubber grain weightening finish method as described in any one in claim 1 to 5,
Then the rubber grain after weightening is mixed in concrete.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710567030.4A CN107311495B (en) | 2017-07-12 | 2017-07-12 | Rubber grain weightening finish method and rubber concrete preparation method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710567030.4A CN107311495B (en) | 2017-07-12 | 2017-07-12 | Rubber grain weightening finish method and rubber concrete preparation method |
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| CN107311495B CN107311495B (en) | 2019-10-11 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107935428A (en) * | 2017-11-30 | 2018-04-20 | 天津大学 | It is a kind of to improve the method that rubber grain floats in Latex cement sill |
| CN112209648A (en) * | 2020-12-02 | 2021-01-12 | 广东博智林机器人有限公司 | Modified waste rubber, preparation method thereof and sound insulation mortar |
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| KR19980038354U (en) * | 1996-12-19 | 1998-09-15 | 박병재 | Snap pin |
| CN1339413A (en) * | 2000-08-18 | 2002-03-13 | 盈基科技企业有限公司 | Building material and its producing method |
| CN104098296A (en) * | 2013-04-13 | 2014-10-15 | 山东交通学院 | Method for enhancing strength of rubber aggregate concrete |
| CN105502986A (en) * | 2016-01-06 | 2016-04-20 | 中冶建工集团有限公司 | Method for modification of rubber in crumb rubber concrete |
| CN106045388A (en) * | 2016-05-25 | 2016-10-26 | 重庆建工住宅建设有限公司 | Rubber aggregate concrete |
-
2017
- 2017-07-12 CN CN201710567030.4A patent/CN107311495B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19980038354U (en) * | 1996-12-19 | 1998-09-15 | 박병재 | Snap pin |
| CN1339413A (en) * | 2000-08-18 | 2002-03-13 | 盈基科技企业有限公司 | Building material and its producing method |
| CN104098296A (en) * | 2013-04-13 | 2014-10-15 | 山东交通学院 | Method for enhancing strength of rubber aggregate concrete |
| CN105502986A (en) * | 2016-01-06 | 2016-04-20 | 中冶建工集团有限公司 | Method for modification of rubber in crumb rubber concrete |
| CN106045388A (en) * | 2016-05-25 | 2016-10-26 | 重庆建工住宅建设有限公司 | Rubber aggregate concrete |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107935428A (en) * | 2017-11-30 | 2018-04-20 | 天津大学 | It is a kind of to improve the method that rubber grain floats in Latex cement sill |
| CN112209648A (en) * | 2020-12-02 | 2021-01-12 | 广东博智林机器人有限公司 | Modified waste rubber, preparation method thereof and sound insulation mortar |
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| Publication number | Publication date |
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| CN107311495B (en) | 2019-10-11 |
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Effective date of registration: 20230414 Address after: No. 18, 1st Floor, Hubei University of Technology Entrepreneurship Base, No. 28 Nanli Road, Hongshan District, Wuhan City, Hubei Province, 430068 Patentee after: Wuhan Yuhui Engineering Consulting Co.,Ltd. Address before: 430068 1, Lijia 1 village, Nanhu, Wuchang District, Wuhan, Hubei Patentee before: HUBEI University OF TECHNOLOGY |