WO2011134366A1 - Mélange caoutchouc-asphalte obtenu par mélange direct et son procédé de production - Google Patents

Mélange caoutchouc-asphalte obtenu par mélange direct et son procédé de production Download PDF

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Publication number
WO2011134366A1
WO2011134366A1 PCT/CN2011/073110 CN2011073110W WO2011134366A1 WO 2011134366 A1 WO2011134366 A1 WO 2011134366A1 CN 2011073110 W CN2011073110 W CN 2011073110W WO 2011134366 A1 WO2011134366 A1 WO 2011134366A1
Authority
WO
WIPO (PCT)
Prior art keywords
rubber
asphalt
rubber powder
mixture
modifier
Prior art date
Application number
PCT/CN2011/073110
Other languages
English (en)
Chinese (zh)
Inventor
周其强
Original Assignee
Zhou Qiqiang
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Zhou Qiqiang filed Critical Zhou Qiqiang
Publication of WO2011134366A1 publication Critical patent/WO2011134366A1/fr

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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
    • C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
    • C04B26/02—Macromolecular compounds
    • C04B26/26—Bituminous materials, e.g. tar, pitch
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
    • 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

Definitions

  • the present invention relates to a method of producing a rubber asphalt mixture and a rubber asphalt mixture produced therefrom.
  • Rubber asphalt is a product obtained by mixing rubber powder and asphalt in a certain ratio, and is a binder used in various types of flexible pavement construction.
  • the mixture of rubber asphalt and mineral material is called rubber asphalt mixture.
  • rubber asphalt concrete When it is paved and rolled, it is also called rubber asphalt concrete.
  • the rubber asphalt pavement technology has formed a relatively complete wet process and dry process.
  • the dry process is a method in which rubber powder is added to a mineral material and placed in a mixing plant, and a hot asphalt mixture is added to produce a rubber asphalt mixture.
  • the wet process is a production method in which rubber powder and asphalt are first mixed to form rubber asphalt and then mixed with mineral materials to produce rubber asphalt mixture. Rubber asphalt mixtures are also classified into dry and wet rubber asphalt mixtures, depending on the production process.
  • the wet process first adds the rubber powder to the matrix asphalt and stirs under high temperature conditions, the rubber powder is fully swelled in the matrix asphalt and a relatively complicated material exchange and chemical reaction with the asphalt occurs.
  • the rubber powder is here. Desulfurization and degradation occur during the process, which improves the adhesion of rubber particles.
  • some rubber components enter the asphalt, and the asphalt is modified to improve the adhesion of the asphalt and to strengthen the asphalt.
  • the wet rubber asphalt mixture exhibits excellent properties of high viscosity and high elasticity.
  • the dry process involves adding rubber particles directly to the aggregate and then spraying it into hot asphalt to form a rubber asphalt mixture. Due to the addition of highly elastic waste rubber particles, the elasticity and damping properties of the road surface can be increased, and the tire/road surface pumping noise and the tire vibration noise can be reduced.
  • the processing method of the rubber particles used in the dry process is simple, the process of mixing the mixture is simple, time-consuming, and does not require expensive rubber asphalt production equipment and energy costs, and is economical and efficient compared with the wet process.
  • the rubber particles in the dry rubber asphalt mixture can not complete the process of desulfurization and degradation, and can not modify the asphalt with material exchange with asphalt. , can only be used as aggregates,
  • the effect on the performance improvement of asphalt pavement is not obvious. Therefore, the performance of the existing dry rubber asphalt mixture is inferior to that of the wet asphalt, especially the water stability is poor, and it is often necessary to add additives such as cement and lime to improve the water stability in the production process. Due to the poor adhesion of the rubber particles and the poor miscibility with the mineral materials, the premixing of the mineral materials and the rubber particles is required, which affects the heat storage of the mixture and limits the paving and rolling time, so that the paving is formed.
  • Rubber asphalt concrete is only suitable for the middle and lower layers of highways due to its low quality.
  • the rubber asphalt will absorb the equal volume of asphalt, so that the ratio of the mixture to the oil and stone (the mass ratio of the asphalt to the mineral) increases, limiting the amount and quality of the rubber powder modifier, and increasing The cost of the rubber asphalt mixture.
  • the object of the present invention is to overcome the above-mentioned shortcomings of the prior art dry rubber asphalt mixture and its production process, and to provide a high-volume dry rubber asphalt mixture and a production method thereof.
  • the rubber asphalt mixing method of the invention has the advantages of simple production method and easy operation, and the rubber powder modifier dosage ratio can be improved by the method, the rubber particle asphaltene can be changed, the “glue oil” can be realized, the amount of the petroleum matrix asphalt can be reduced, and the rubber can be improved. The amount and quality of the powder modifier.
  • the rubber asphalt mixture production method of the invention does not need the premixing process of the traditional dry process, and does not need to add mineral powder, cement, lime lime or blending oil, extended oil and other auxiliary agents, and the rubber asphalt mixture prepared by the technology.
  • the indicators are in line with industry standards and are very economical.
  • the rubber powder is obtained by pulverizing a skewed nylon or a meridian steel waste tire.
  • a method for producing a straight rubber asphalt mixture comprising the following steps:
  • Preparation of rubber asphalt mixture The mineral material is heated to 210 ⁇ 220 °C, and the petroleum matrix asphalt is heated to 160 ⁇ 170 °C.
  • C8H1802 which is white powder or flake, has the function of promoting the low-temperature synthesis of asphaltenes from petroleum asphalt and rubber hydrocarbon molecules, and can increase the permeability of rubber powder modifier.
  • the rubber asphalt mixture of the present invention is prepared by heating the matrix asphalt to
  • the rubber powder modifier prepared according to the method of the invention has strong permeability, and the rubber particles become rubber oil at high temperature, and some components of the rubber powder enter the asphalt, and asphaltene changes occur, thereby realizing "glue oil” and rubber powder reform.
  • the compatibility of the agent with the ore material is strong, and the rubber powder modifier can penetrate into the stone lattice, thereby increasing the amount of the rubber powder modifier in the rubber asphalt and reducing the amount of the asphalt.
  • the oil to stone ratio of the mix can be reduced from 8-10 to 6-8.
  • the straight rubber asphalt mixture of the invention is evaluated by the Marshall test method and the road performance index, and a plurality of technical indicators are obviously higher than the industry standard, and can be used for waterproofing and leakproof use of road construction and roof tunnels.
  • the rubber pitch in the examples of the present invention was prepared as follows:
  • the straight rubber asphalt mixture of the present embodiment is prepared as follows:
  • the material is prepared according to the density of the Marshall test piece at the optimum oil-stone ratio of 0.98 times.
  • the method "forms ⁇ 10 X 10cm cylindrical test piece to ensure the same degree of compaction as the site.
  • test results of the high-volume straight-mixed rubber asphalt mixture prepared by the above three examples are as follows: Table 1, Marshall test results

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Road Paving Structures (AREA)

Abstract

Mélange caoutchouc-asphalte et son procédé de préparation. Le mélange est préparé à partir de pierres à gradation, d'une matrice de bitume de pétrole et d'un modificateur de type poudre de caoutchouc dans un rapport en poids de 89-94:4-6:2-5, le modificateur de type poudre de caoutchouc étant constitué d'une poudre de caoutchouc et d'hexanediol dans un rapport en poids de 100:3-7. Le procédé comprend les étapes suivantes : mélanger l'hexanediol et la poudre de pneus usés selon le rapport préconisé pour obtenir le modificateur de type poudre de caoutchouc par mélange et mouillage; chauffer les agrégats minéraux jusqu'à la température de 210 à 220°C, puis incorporer simultanément le modificateur de type poudre de caoutchouc et la matrice de bitume de pétrole dans les agrégats minéraux pour obtenir le mélange après malaxage pendant 40 à 60 secondes. Le procédé est simple et omet le prémélange de la poudre de caoutchouc et des pierres. La transformation du caoutchouc en huile peut être mise en œuvre, et le rapport pétrole-pierres dans le mélange peut être abaissé à 6-8. Tous les paramètres techniques du mélange caoutchouc-asphalte obtenu par mélange direct selon l'invention sont supérieurs à ceux de la norme industrielle, et ce mélange caoutchouc-asphalte obtenu par mélange direct peut être utilisé pour la construction de routes et la prévention des infiltrations d'eau et des fuites des toitures et des tunnels.
PCT/CN2011/073110 2010-04-28 2011-04-21 Mélange caoutchouc-asphalte obtenu par mélange direct et son procédé de production WO2011134366A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201010158249.7 2010-04-28
CN2010101582497A CN101798203B (zh) 2010-04-28 2010-04-28 一种直拌橡胶沥青混合料及其生产方法

Publications (1)

Publication Number Publication Date
WO2011134366A1 true WO2011134366A1 (fr) 2011-11-03

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CN (1) CN101798203B (fr)
WO (1) WO2011134366A1 (fr)

Cited By (1)

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CN103669153A (zh) * 2013-12-31 2014-03-26 山东卓洋机电科技有限公司 低温微表处施工工艺

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CN101798203B (zh) * 2010-04-28 2012-05-16 周其强 一种直拌橡胶沥青混合料及其生产方法
CN102040354B (zh) * 2010-11-16 2012-11-21 中交第一公路勘察设计研究院有限公司 一种用作应力吸收层的环保型高弹性沥青混合料
CN102952293A (zh) * 2011-08-30 2013-03-06 中国石油化工股份有限公司 一种复合胶粉改性剂及其制备方法和应用方法
CN102503245B (zh) * 2011-10-25 2013-05-15 华南理工大学 冷再生沥青混合料及其常温乳化再生方法
CN102382480B (zh) * 2011-12-15 2013-03-20 周其强 有机硅浆渣在制备合成橡胶沥青的应用
CN103570279B (zh) * 2013-10-25 2015-05-20 广东易山重工股份有限公司 一种快速有效修补沥青路面坑槽的材料及其制备方法
CN104140223B (zh) * 2014-07-29 2016-05-11 重庆路面科技有限公司 一种直投活化橡胶沥青混合料及其制备方法
CN109665753B (zh) * 2018-12-20 2020-03-27 中交云南高速公路发展有限公司 直投橡胶粉、沥青混合料、使用该混合料的路面及其加工方法
CN110028800A (zh) * 2019-03-21 2019-07-19 华南理工大学 一种含液态降粘减阻剂的橡胶沥青混溶方法

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103669153A (zh) * 2013-12-31 2014-03-26 山东卓洋机电科技有限公司 低温微表处施工工艺
CN103669153B (zh) * 2013-12-31 2016-08-17 山东卓洋机电科技有限公司 低温微表处施工工艺

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CN101798203A (zh) 2010-08-11

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