CN113735479A - Preparation method of calcium carbonate coated modified waste rubber powder - Google Patents
Preparation method of calcium carbonate coated modified waste rubber powder Download PDFInfo
- Publication number
- CN113735479A CN113735479A CN202110957412.4A CN202110957412A CN113735479A CN 113735479 A CN113735479 A CN 113735479A CN 202110957412 A CN202110957412 A CN 202110957412A CN 113735479 A CN113735479 A CN 113735479A
- Authority
- CN
- China
- Prior art keywords
- rubber powder
- waste rubber
- preparation
- treating
- calcium carbonate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229920001971 elastomer Polymers 0.000 title claims abstract description 69
- 239000000843 powder Substances 0.000 title claims abstract description 63
- 239000002699 waste material Substances 0.000 title claims abstract description 57
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 title claims abstract description 31
- 229910000019 calcium carbonate Inorganic materials 0.000 title claims abstract description 15
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 239000007822 coupling agent Substances 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 7
- 239000002253 acid Substances 0.000 claims abstract description 4
- 239000011248 coating agent Substances 0.000 claims abstract description 4
- 238000000576 coating method Methods 0.000 claims abstract description 4
- 239000000243 solution Substances 0.000 claims description 18
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 14
- 238000002156 mixing Methods 0.000 claims description 8
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 6
- 229910052804 chromium Inorganic materials 0.000 claims description 6
- 239000011651 chromium Substances 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 6
- 238000002791 soaking Methods 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- 238000005406 washing Methods 0.000 claims description 5
- 239000011575 calcium Substances 0.000 claims description 4
- 238000007605 air drying Methods 0.000 claims description 2
- 239000012047 saturated solution Substances 0.000 claims description 2
- 238000009736 wetting Methods 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 claims 1
- 239000004568 cement Substances 0.000 abstract description 10
- 239000002131 composite material Substances 0.000 abstract description 4
- 230000004048 modification Effects 0.000 abstract description 2
- 238000012986 modification Methods 0.000 abstract description 2
- 239000010815 organic waste Substances 0.000 abstract description 2
- 239000002861 polymer material Substances 0.000 abstract description 2
- 230000008569 process Effects 0.000 abstract description 2
- 239000004567 concrete Substances 0.000 description 9
- 239000010920 waste tyre Substances 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 125000000962 organic group Chemical group 0.000 description 2
- YVOKFRJUDMWFGV-UHFFFAOYSA-N C(=O)(C(=C)C)[Cr] Chemical compound C(=O)(C(=C)C)[Cr] YVOKFRJUDMWFGV-UHFFFAOYSA-N 0.000 description 1
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- DHKHKXVYLBGOIT-UHFFFAOYSA-N acetaldehyde Diethyl Acetal Natural products CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 description 1
- 125000002777 acetyl group Chemical class [H]C([H])([H])C(*)=O 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000011258 core-shell material Substances 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 238000002715 modification method Methods 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Classifications
-
- 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
- C04B20/107—Acids or salts thereof
-
- 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
- C04B18/22—Rubber, e.g. ground waste tires
-
- 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
- C04B20/02—Treatment
- C04B20/023—Chemical treatment
-
- 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
- C04B20/02—Treatment
- C04B20/026—Comminuting, e.g. by grinding or breaking; Defibrillating fibres other than asbestos
-
- 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 preparation method of calcium carbonate coated modified waste rubber powder, belonging to the technical field of modification of high polymer materials. The method comprises the following steps: (1) treating the surface of the waste rubber powder with clear water; (2) treating the surface of the waste rubber powder with an acid solution; (3) treating the surface of the waste rubber powder with a coupling agent; (4) performing calcium carbonate coating treatment on the surface of the waste rubber powder; (5) and (3) crushing modified waste rubber powder aggregates. The interface compatibility and the interface bonding strength of the modified waste rubber powder and the cement paste obtained by the multistage treatment process are obviously improved; and the formed composite structure taking the organic waste rubber powder as a core and the inorganic calcium carbonate as a shell obviously improves the mechanical property and durability of the waste rubber powder.
Description
Technical Field
The invention belongs to the technical field of modification of high polymer materials, and particularly relates to a preparation method of calcium carbonate coated modified waste rubber powder.
Background
Along with the rapid development of the global automobile industry, the quantity of waste tires is increasing, the waste tires are difficult to decompose in the natural environment for hundreds of years, and the safety and beautification of the environment are seriously influenced. How to efficiently and reasonably utilize waste tires becomes an important subject to be solved urgently in all countries in the world.
The waste tires are crushed into rubber powder and mixed into concrete to prepare rubber concrete which is used for highway pavement engineering, and the method is a very promising disposal method. The existing cement concrete pavement has large brittleness and weak impact resistance, cracks are easy to generate under the action of internal stress (temperature stress and humidity stress), and the waste rubber is doped into the cement concrete to form a structural deformation center for absorbing strain energy, thereby obviously improving the brittleness and the impact resistance of the concrete and reducing various diseases caused by the internal stress.
However, the incorporation of rubber can cause the concrete to have greatly reduced compression and bending strength, mainly because: the rubber material is an organic material and has poor hydrophilicity; the cement paste is an inorganic material, has strong hydrophilicity, large difference of physical and chemical properties of the cement paste and the cement paste, poor compatibility and weak interface bonding force, obviously reduces the strength of the concrete, and hinders the large-scale application of the rubber concrete in pavement engineering.
At present, NaOH solution, NaCl solution, clear water and CCl are mainly adopted by a plurality of scientific researchers4The surface of the rubber powder is modified by the solution, the polymer emulsion, the polyacrylamide, the polyvinyl acetal, the silane coupling agent and the like so as to improve the interface compatibility and the interface bonding strength of the rubber powder and the cement paste and improve the strength of the rubber concrete.
Disclosure of Invention
In view of the fact that the modification method is not ideal, the invention provides the preparation method of the calcium carbonate coated modified waste rubber powder, which can effectively improve the compatibility of the waste rubber powder and cement paste and obviously improve the interfacial bonding strength between the waste rubber powder and the cement paste.
The preparation method of the calcium carbonate coated modified waste rubber powder comprises the following steps: (1) treating the surface of the waste rubber powder with clear water; (2) treating the surface of the waste rubber powder with an acid solution; (3) treating the surface of the waste rubber powder with a coupling agent; (4) performing calcium carbonate coating treatment on the surface of the waste rubber powder; (5) and (3) crushing modified waste rubber powder aggregates.
The waste rubber powder is 100-mesh 200-mesh ultrafine rubber powder.
The specific operation of the step (1) is as follows: soaking the waste rubber powder in clear water, treating for more than 20 minutes under continuous stirring, filtering and drying.
The specific operation of the step (2) is as follows: soaking the waste rubber powder in an HCl solution with the mass concentration of 5-8% for 6-12 hours, washing with clear water, and airing.
The specific operation of the step (3) is as follows: uniformly mixing the waste rubber powder with an ethanol solution of an organic chromium complex coupling agent with the mass concentration of 1-2%, wetting the surface of the waste rubber powder completely, mixing for 5-10 minutes, and drying.
The mixing amount of the ethanol solution of the organic chromium complex coupling agent is 3-5 times of the mass of the waste rubber powder.
The specific operation of the step (4) is as follows: adding Ca (OH) into the waste rubber powder treated by the coupling agent in the step (3)2In the saturated solution, the mass concentration of the waste rubber powder is 3-8%, and the waste rubber powder is continuously stirred and dispersed for 5-20 minutes; then continuously introducing CO under the condition of stirring2Standing for 20-60 min, filtering, washing with clear water, and air drying.
The introduced CO2Molar ratio of gas to Ca (OH) in solution2The molar ratio of (A) to (B) is 1-2: 1.
The specific operation of the step (5) is as follows: adopting a planetary ball mill for mechanical crushing, wherein the rotating speed is 2000-.
The invention has the following advantages:
(1) the modified waste rubber powder has higher mechanical property and better durability by a multi-stage treatment process. The surface of the waste rubber powder is treated by clear water to remove floating dust and pollutants on the surface; then, removing oil stains and loose structures on the surface by acid solution treatment; then, the surface polarity state is changed by the treatment of a coupling agent, and the interface compatibility is improved; and finally, performing calcium carbonate coating treatment to form a composite structure taking the waste rubber powder as a core and calcium carbonate as a shell, so that the mechanical property and durability of the waste rubber powder are obviously improved.
(2) According to the invention, the surface of the waste rubber powder is coated by calcium carbonate, and the surface is changed into a strong-polarity calcium carbonate structure from a non-polar or weak-polarity organic group, so that the surface is changed into a strong-polarity structure from a non-polar or weak-polarity organic group, and the interface compatibility and the interface bonding strength of the waste rubber powder and the cement slurry are obviously improved.
(3) An organic-inorganic core-shell composite structure is formed, and the comprehensive performance of the modified waste rubber powder is obviously improved. The composite structure prepared by the invention takes organic waste rubber powder as a core and inorganic calcium carbonate as a shell, has the advantages of two materials, can generate new excellent performance by compounding the materials, and obviously improves the comprehensive performance of the waste rubber powder.
Detailed Description
In order to better understand the present invention, the following examples are further provided to illustrate the present invention, but the present invention is not limited to the following examples.
Example 1:
(1) soaking 100-mesh superfine waste rubber powder in clear water, treating for 20 minutes under continuous stirring, filtering and drying.
(2) And (2) adding the waste rubber powder cleaned in the step (1) into an HCl solution with the mass concentration of 5%, soaking for 8 hours, then washing for 2 times by using clear water, and airing.
(3) Preparing an organic chromium complex coupling agent (a methacryl chromium complex coupling agent) into an ethanol solution with the mass concentration of 1%, uniformly mixing the ethanol solution with the waste rubber powder treated in the step (2), wherein the mixing amount of the ethanol solution of the organic chromium complex coupling agent is 4 times of the mass of the waste rubber powder, the mixing time is 5 minutes, and then drying.
(4) Adding Ca (OH) into the waste rubber powder treated by the coupling agent in the step (3)2In the saturated solution, the mass concentration of the waste rubber powder is 5 percent, and the waste rubber powder is continuously stirred and dispersed for 10 minutes; then continuously introducing CO under the condition of stirring230 minutes after introduction of CO2Molar ratio of gas to Ca (OH) in solution2In a molar ratio of 1.2: 1; standing for 30 min, filtering, washing with clear water twice, and air drying.
(5) And (4) mechanically crushing the modified waste rubber powder aggregate obtained in the step (4) by using a planetary ball mill at the rotating speed of 3000 r/min for 1 min.
Example 2:
(1) soaking 200-mesh superfine waste rubber powder in clear water, treating for 25 minutes under continuous stirring, filtering and drying.
(2) And (2) adding the waste rubber powder cleaned in the step (1) into an HCl solution with the mass concentration of 5%, soaking for 8 hours, washing for 3 times by using clear water, and airing.
(3) Preparing an ethanol solution with the mass concentration of 2% by using an organic chromium complex coupling agent, uniformly mixing the ethanol solution with the waste rubber powder treated in the step (2), mixing the ethanol solution with the organic chromium complex coupling agent for 10 minutes, and drying the mixture.
(4) Adding Ca (OH) into the waste rubber powder treated by the coupling agent in the step (3)2In the saturated solution, the mass concentration of the waste rubber powder is 5 percent, and the waste rubber powder is continuously stirred and dispersed for 10 minutes; then continuously introducing CO under the condition of stirring230 minutes after introduction of CO2Molar ratio of gas to Ca (OH) in solution2In a molar ratio of 1.3: 1; standing for 30 min, filtering, washing with clear water twice, and air drying.
(5) And (4) mechanically crushing the modified waste rubber powder aggregate obtained in the step (4) by using a planetary ball mill at the rotating speed of 3000 r/min for 3 min.
Example 3:
(1) soaking 150-mesh superfine waste rubber powder in clear water, treating for 30 minutes under continuous stirring, filtering and drying.
(2) And (2) adding the waste rubber powder cleaned in the step (1) into an HCl solution with the mass concentration of 5%, soaking for 8 hours, washing for 3 times by using clear water, and airing.
(3) Preparing an organic chromium complex coupling agent into an ethanol solution with the mass concentration of 1.5%, uniformly mixing the ethanol solution with the waste rubber powder treated in the step (2), mixing the ethanol solution with the organic chromium complex coupling agent for 8 minutes, and drying the mixture.
(4) Adding Ca (OH) into the waste rubber powder treated by the coupling agent in the step (3)2In the saturated solution, the mass concentration of the waste rubber powder is 5 percent, and the waste rubber powder is continuously stirred and dispersed for 10 minutes; then continuously introducing CO under the condition of stirring230 minutes after introduction of CO2Molar ratio of gas to Ca (OH) in solution2In a molar ratio of 1.4: 1; standing for 30 min, filtering, washing with clear water twice, and air drying.
(5) And (4) mechanically crushing the modified waste rubber powder aggregate obtained in the step (4) by using a planetary ball mill at the rotating speed of 3000 r/min for 2 min.
Example 4:
(1) soaking 200-mesh superfine waste rubber powder in clear water, treating for 20 minutes under continuous stirring, filtering and drying.
(2) And (2) adding the waste rubber powder cleaned in the step (1) into an HCl solution with the mass concentration of 5%, soaking for 8 hours, then washing for 2 times by using clear water, and airing.
(3) Preparing an ethanol solution with the mass concentration of 2% by using an organic chromium complex coupling agent, uniformly mixing the ethanol solution with the waste rubber powder treated in the step (2), mixing for 7 minutes, and drying.
(4) Adding Ca (OH) into the waste rubber powder treated by the coupling agent in the step (3)2In the saturated solution, the mass concentration of the waste rubber powder is 5 percent, and the waste rubber powder is continuously stirred and dispersed for 10 minutes; then continuously introducing CO under the condition of stirring230 minutes after introduction of CO2Molar ratio of gas to Ca (OH) in solution2In a molar ratio of 1.3: 1; standing for 30 min, filtering, washing with clear water twice, and air drying.
(5) And (4) mechanically crushing the modified waste rubber powder aggregate obtained in the step (4) by using a planetary ball mill at the rotating speed of 3000 r/min for 2 min.
Claims (9)
1. The preparation method of the calcium carbonate coated modified waste rubber powder is characterized by comprising the following steps: (1) treating the surface of the waste rubber powder with clear water; (2) treating the surface of the waste rubber powder with an acid solution; (3) treating the surface of the waste rubber powder with a coupling agent; (4) performing calcium carbonate coating treatment on the surface of the waste rubber powder; (5) and (3) crushing modified waste rubber powder aggregates.
2. The method as claimed in claim 1, wherein the waste rubber powder is 100-200 mesh ultra-fine rubber powder.
3. The preparation method according to claim 1, wherein the specific operation of the step (1) is as follows: soaking the waste rubber powder in clear water, treating for more than 20 minutes under continuous stirring, filtering and drying.
4. The preparation method according to claim 1, wherein the specific operation of the step (2) is as follows: soaking the waste rubber powder in an HCl solution with the mass concentration of 5-8% for 6-12 hours, washing with clear water, and airing.
5. The preparation method according to claim 1, wherein the specific operation of the step (3) is: uniformly mixing the waste rubber powder with an ethanol solution of an organic chromium complex coupling agent with the mass concentration of 1-2%, wetting the surface of the waste rubber powder completely, mixing for 5-10 minutes, and drying.
6. The preparation method according to claim 5, wherein the ethanol solution of the organic chromium complex coupling agent is added in an amount of 3-5 times the mass of the waste rubber powder.
7. The preparation method according to claim 1, wherein the specific operation of the step (4) is as follows: adding Ca (OH) into the waste rubber powder treated by the coupling agent in the step (3)2In the saturated solution, the mass concentration of the waste rubber powder is 3-8%, and the waste rubber powder is continuously stirred and dispersed for 5-20 minutes; then continuously introducing CO under the condition of stirring2Standing for 20-60 min, filtering, washing with clear water, and air drying.
8. The method of claim 7, wherein the introduced CO is introduced into the reaction vessel2Molar ratio of gas to Ca (OH) in solution2The molar ratio of (A) to (B) is 1-2: 1.
9. The preparation method according to claim 1, wherein the specific operation of the step (5) is: adopting a planetary ball mill for mechanical crushing, wherein the rotating speed is 2000-.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110957412.4A CN113735479A (en) | 2021-08-20 | 2021-08-20 | Preparation method of calcium carbonate coated modified waste rubber powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110957412.4A CN113735479A (en) | 2021-08-20 | 2021-08-20 | Preparation method of calcium carbonate coated modified waste rubber powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113735479A true CN113735479A (en) | 2021-12-03 |
Family
ID=78731852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110957412.4A Pending CN113735479A (en) | 2021-08-20 | 2021-08-20 | Preparation method of calcium carbonate coated modified waste rubber powder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113735479A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120252910A1 (en) * | 2011-04-01 | 2012-10-04 | Chun Well Industry Co., Ltd. | Method for Producing Improved Rubberized Concrete using Waste Rubber Tires |
| CN104311865A (en) * | 2014-10-13 | 2015-01-28 | 重庆交通大学 | Rubber surface modification method |
| CN104710119A (en) * | 2015-02-10 | 2015-06-17 | 山西省交通科学研究院 | Waste rubber particle surface treatment method |
| CN107674238A (en) * | 2017-10-10 | 2018-02-09 | 山西省交通科学研究院 | A kind of waste rubber powder surface modifying method |
-
2021
- 2021-08-20 CN CN202110957412.4A patent/CN113735479A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120252910A1 (en) * | 2011-04-01 | 2012-10-04 | Chun Well Industry Co., Ltd. | Method for Producing Improved Rubberized Concrete using Waste Rubber Tires |
| CN104311865A (en) * | 2014-10-13 | 2015-01-28 | 重庆交通大学 | Rubber surface modification method |
| CN104710119A (en) * | 2015-02-10 | 2015-06-17 | 山西省交通科学研究院 | Waste rubber particle surface treatment method |
| CN107674238A (en) * | 2017-10-10 | 2018-02-09 | 山西省交通科学研究院 | A kind of waste rubber powder surface modifying method |
Non-Patent Citations (2)
| Title |
|---|
| OBINNA ONUAGULUCHI: "Hardened properties of concrete mixtures containing pre-coated crumb rubber and silica fume", 《JOURNAL OF CLEANER PRODUCTION》 * |
| 郑永林: "《粉体表面改性 第3版》", 30 September 2011, 中国建材工业出版社 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107674238B (en) | Surface modification method for waste rubber powder | |
| Yousef et al. | A new strategy for functionalization of char derived from pyrolysis of textile waste and its application as hybrid fillers (CNTs/char and graphene/char) in cement industry | |
| CN1712383A (en) | Corrosion proof high performance marine concrete and its production | |
| CN111892341B (en) | Corrosion-resistant composite cement and preparation process thereof | |
| CN103482890B (en) | Method for preparing geopolymers by taking stone coal vanadium extraction tailings as main raw materials | |
| CN111792883B (en) | Steel slag-doped premixed concrete and preparation method thereof | |
| CN114477920B (en) | Green environment-friendly light high-strength concrete | |
| CN111704405B (en) | Sisal hemp nano cellulose ultra-high toughness concrete and preparation method thereof | |
| CN110482895A (en) | A kind of method of modifying of recycled aggregate | |
| CN103086618A (en) | Construction waste micro-powder solidifying agent for solidifying soil mass | |
| CN109704631A (en) | A kind of preparation method of concrete antiseptic agent | |
| CN108264254B (en) | Preparation process of modified rubber particles for rubber concrete | |
| CN108455921B (en) | Preparation method of fly ash brick | |
| CN113735479A (en) | Preparation method of calcium carbonate coated modified waste rubber powder | |
| CN113185203A (en) | Preparation method of recycled concrete | |
| CN110317015A (en) | A kind of composite high-strength concrete | |
| CN112708167B (en) | Surface modification method for waste rubber powder | |
| CN115108780B (en) | Energy-saving environment-friendly high-impact-resistance non-autoclaved tubular pile concrete material and preparation method thereof | |
| CN113979697B (en) | Grouting material for deep-sea concrete defect repair, preparation method thereof and grouting method | |
| CN115321885A (en) | Polymer modified cement-based repair mortar for marine concrete and preparation method thereof | |
| CN113667179A (en) | Preparation method of nano titanium dioxide coated modified waste rubber powder | |
| CN114716178A (en) | Environment-friendly cement self-repairing system, preparation method and application | |
| CN113277770A (en) | Preparation method and application of modified flax fiber with enhancement effect | |
| CN112439390A (en) | Magnetic aminated starch bentonite wastewater treatment agent and preparation method thereof | |
| CN112624649A (en) | Ultrasonic shelling and regenerating gelation utilization method for concrete tank car cleaning waste residue |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211203 |